Hi Folks,
Attached is the latest version of my CN400 patch.
This has been built and tested against v2-R4369.
It seems to be getting through early init and starting the core.
I'll post the spew level output next. I hope someone can point out what seems to be looking good and what seems to be bad !!
Thanks, Jon
Index: src/include/device/pci_ids.h =================================================================== --- src/include/device/pci_ids.h (revision 1) +++ src/include/device/pci_ids.h (working copy) @@ -1198,6 +1198,14 @@ #define PCI_DEVICE_ID_VIA_CN700_VLINK 0x7314 #define PCI_DEVICE_ID_VIA_CN700_BRIDGE 0xB198 #define PCI_DEVICE_ID_VIA_CN700_VGA 0x3344 +#define PCI_DEVICE_ID_VIA_CN400_AGP 0x0259 +#define PCI_DEVICE_ID_VIA_CN400_ERR 0x1259 +#define PCI_DEVICE_ID_VIA_CN400_HOST 0x2259 +#define PCI_DEVICE_ID_VIA_CN400_MEMCTRL 0x3259 +#define PCI_DEVICE_ID_VIA_CN400_PM 0x4259 +#define PCI_DEVICE_ID_VIA_CN400_VLINK 0x7259 +#define PCI_DEVICE_ID_VIA_CN400_BRIDGE 0xB198 +#define PCI_DEVICE_ID_VIA_CN400_VGA 0x3118
#define PCI_VENDOR_ID_SIEMENS 0x110A #define PCI_DEVICE_ID_SIEMENS_DSCC4 0x2102 Index: src/mainboard/via/epia-n/dsdt.c =================================================================== --- src/mainboard/via/epia-n/dsdt.c (revision 0) +++ src/mainboard/via/epia-n/dsdt.c (revision 0) @@ -0,0 +1,142 @@ +/* + * + * Intel ACPI Component Architecture + * ASL Optimizing Compiler version 20060127 [Apr 23 2006] + * Copyright (C) 2000 - 2006 Intel Corporation + * Supports ACPI Specification Revision 3.0a + * + * Compilation of "dsdt.asl" - Wed Sep 6 11:36:08 2006 + * + * C source code output + * + */ +unsigned char AmlCode[] = +{ + 0x44,0x53,0x44,0x54,0xF0,0x03,0x00,0x00, /* 00000000 "DSDT...." */ + 0x01,0x03,0x4C,0x58,0x42,0x49,0x4F,0x53, /* 00000008 "..LXBIOS" */ + 0x4C,0x58,0x42,0x2D,0x44,0x53,0x44,0x54, /* 00000010 "LXB-DSDT" */ + 0x01,0x00,0x00,0x00,0x49,0x4E,0x54,0x4C, /* 00000018 "....INTL" */ + 0x27,0x01,0x06,0x20,0x10,0x12,0x5F,0x50, /* 00000020 "'.. .._P" */ + 0x52,0x5F,0x5B,0x83,0x0B,0x43,0x50,0x55, /* 00000028 "R_[..CPU" */ + 0x30,0x00,0x10,0x04,0x00,0x00,0x06,0x08, /* 00000030 "0......." */ + 0x5F,0x53,0x30,0x5F,0x12,0x06,0x04,0x00, /* 00000038 "_S0_...." */ + 0x00,0x00,0x00,0x08,0x5F,0x53,0x35,0x5F, /* 00000040 "...._S5_" */ + 0x12,0x08,0x04,0x0A,0x02,0x0A,0x02,0x00, /* 00000048 "........" */ + 0x00,0x10,0x4E,0x39,0x5F,0x53,0x42,0x5F, /* 00000050 "..N9_SB_" */ + 0x5B,0x82,0x44,0x06,0x4C,0x4E,0x4B,0x41, /* 00000058 "[.D.LNKA" */ + 0x08,0x5F,0x48,0x49,0x44,0x0C,0x41,0xD0, /* 00000060 "._HID.A." */ + 0x0C,0x0F,0x08,0x5F,0x55,0x49,0x44,0x01, /* 00000068 "..._UID." */ + 0x14,0x09,0x5F,0x53,0x54,0x41,0x00,0xA4, /* 00000070 ".._STA.." */ + 0x0A,0x0B,0x14,0x1A,0x5F,0x43,0x52,0x53, /* 00000078 "...._CRS" */ + 0x00,0x08,0x42,0x55,0x46,0x46,0x11,0x09, /* 00000080 "..BUFF.." */ + 0x0A,0x06,0x23,0x20,0x00,0x18,0x79,0x00, /* 00000088 "..# ..y." */ + 0xA4,0x42,0x55,0x46,0x46,0x14,0x1A,0x5F, /* 00000090 ".BUFF.._" */ + 0x50,0x52,0x53,0x00,0x08,0x42,0x55,0x46, /* 00000098 "PRS..BUF" */ + 0x46,0x11,0x09,0x0A,0x06,0x23,0x20,0x06, /* 000000A0 "F....# ." */ + 0x18,0x79,0x00,0xA4,0x42,0x55,0x46,0x46, /* 000000A8 ".y..BUFF" */ + 0x14,0x06,0x5F,0x53,0x52,0x53,0x01,0x14, /* 000000B0 ".._SRS.." */ + 0x06,0x5F,0x44,0x49,0x53,0x00,0x5B,0x82, /* 000000B8 "._DIS.[." */ + 0x45,0x06,0x4C,0x4E,0x4B,0x42,0x08,0x5F, /* 000000C0 "E.LNKB._" */ + 0x48,0x49,0x44,0x0C,0x41,0xD0,0x0C,0x0F, /* 000000C8 "HID.A..." */ + 0x08,0x5F,0x55,0x49,0x44,0x0A,0x02,0x14, /* 000000D0 "._UID..." */ + 0x09,0x5F,0x53,0x54,0x41,0x00,0xA4,0x0A, /* 000000D8 "._STA..." */ + 0x0B,0x14,0x1A,0x5F,0x43,0x52,0x53,0x00, /* 000000E0 "..._CRS." */ + 0x08,0x42,0x55,0x46,0x46,0x11,0x09,0x0A, /* 000000E8 ".BUFF..." */ + 0x06,0x23,0x00,0x02,0x18,0x79,0x00,0xA4, /* 000000F0 ".#...y.." */ + 0x42,0x55,0x46,0x46,0x14,0x1A,0x5F,0x50, /* 000000F8 "BUFF.._P" */ + 0x52,0x53,0x00,0x08,0x42,0x55,0x46,0x46, /* 00000100 "RS..BUFF" */ + 0x11,0x09,0x0A,0x06,0x23,0x20,0x06,0x18, /* 00000108 "....# .." */ + 0x79,0x00,0xA4,0x42,0x55,0x46,0x46,0x14, /* 00000110 "y..BUFF." */ + 0x06,0x5F,0x53,0x52,0x53,0x01,0x14,0x06, /* 00000118 "._SRS..." */ + 0x5F,0x44,0x49,0x53,0x00,0x5B,0x82,0x45, /* 00000120 "_DIS.[.E" */ + 0x06,0x4C,0x4E,0x4B,0x43,0x08,0x5F,0x48, /* 00000128 ".LNKC._H" */ + 0x49,0x44,0x0C,0x41,0xD0,0x0C,0x0F,0x08, /* 00000130 "ID.A...." */ + 0x5F,0x55,0x49,0x44,0x0A,0x03,0x14,0x09, /* 00000138 "_UID...." */ + 0x5F,0x53,0x54,0x41,0x00,0xA4,0x0A,0x0B, /* 00000140 "_STA...." */ + 0x14,0x1A,0x5F,0x43,0x52,0x53,0x00,0x08, /* 00000148 ".._CRS.." */ + 0x42,0x55,0x46,0x46,0x11,0x09,0x0A,0x06, /* 00000150 "BUFF...." */ + 0x23,0x00,0x02,0x18,0x79,0x00,0xA4,0x42, /* 00000158 "#...y..B" */ + 0x55,0x46,0x46,0x14,0x1A,0x5F,0x50,0x52, /* 00000160 "UFF.._PR" */ + 0x53,0x00,0x08,0x42,0x55,0x46,0x46,0x11, /* 00000168 "S..BUFF." */ + 0x09,0x0A,0x06,0x23,0x20,0x06,0x18,0x79, /* 00000170 "...# ..y" */ + 0x00,0xA4,0x42,0x55,0x46,0x46,0x14,0x06, /* 00000178 "..BUFF.." */ + 0x5F,0x53,0x52,0x53,0x01,0x14,0x06,0x5F, /* 00000180 "_SRS..._" */ + 0x44,0x49,0x53,0x00,0x5B,0x82,0x45,0x06, /* 00000188 "DIS.[.E." */ + 0x4C,0x4E,0x4B,0x44,0x08,0x5F,0x48,0x49, /* 00000190 "LNKD._HI" */ + 0x44,0x0C,0x41,0xD0,0x0C,0x0F,0x08,0x5F, /* 00000198 "D.A...._" */ + 0x55,0x49,0x44,0x0A,0x04,0x14,0x09,0x5F, /* 000001A0 "UID...._" */ + 0x53,0x54,0x41,0x00,0xA4,0x0A,0x0B,0x14, /* 000001A8 "STA....." */ + 0x1A,0x5F,0x43,0x52,0x53,0x00,0x08,0x42, /* 000001B0 "._CRS..B" */ + 0x55,0x46,0x46,0x11,0x09,0x0A,0x06,0x23, /* 000001B8 "UFF....#" */ + 0x20,0x00,0x18,0x79,0x00,0xA4,0x42,0x55, /* 000001C0 " ..y..BU" */ + 0x46,0x46,0x14,0x1A,0x5F,0x50,0x52,0x53, /* 000001C8 "FF.._PRS" */ + 0x00,0x08,0x42,0x55,0x46,0x46,0x11,0x09, /* 000001D0 "..BUFF.." */ + 0x0A,0x06,0x23,0x20,0x06,0x18,0x79,0x00, /* 000001D8 "..# ..y." */ + 0xA4,0x42,0x55,0x46,0x46,0x14,0x06,0x5F, /* 000001E0 ".BUFF.._" */ + 0x53,0x52,0x53,0x01,0x14,0x06,0x5F,0x44, /* 000001E8 "SRS..._D" */ + 0x49,0x53,0x00,0x5B,0x82,0x4B,0x1F,0x50, /* 000001F0 "IS.[.K.P" */ + 0x43,0x49,0x30,0x08,0x5F,0x48,0x49,0x44, /* 000001F8 "CI0._HID" */ + 0x0C,0x41,0xD0,0x0A,0x03,0x08,0x5F,0x41, /* 00000200 ".A...._A" */ + 0x44,0x52,0x00,0x08,0x5F,0x55,0x49,0x44, /* 00000208 "DR.._UID" */ + 0x00,0x08,0x5F,0x42,0x42,0x4E,0x00,0x08, /* 00000210 ".._BBN.." */ + 0x5F,0x50,0x52,0x54,0x12,0x43,0x1D,0x20, /* 00000218 "_PRT.C. " */ + 0x12,0x0D,0x04,0x0C,0xFF,0xFF,0x0A,0x00, /* 00000220 "........" */ + 0x00,0x4C,0x4E,0x4B,0x41,0x00,0x12,0x0D, /* 00000228 ".LNKA..." */ + 0x04,0x0C,0xFF,0xFF,0x0A,0x00,0x01,0x4C, /* 00000230 ".......L" */ + 0x4E,0x4B,0x42,0x00,0x12,0x0E,0x04,0x0C, /* 00000238 "NKB....." */ + 0xFF,0xFF,0x0A,0x00,0x0A,0x02,0x4C,0x4E, /* 00000240 "......LN" */ + 0x4B,0x43,0x00,0x12,0x0E,0x04,0x0C,0xFF, /* 00000248 "KC......" */ + 0xFF,0x0A,0x00,0x0A,0x03,0x4C,0x4E,0x4B, /* 00000250 ".....LNK" */ + 0x44,0x00,0x12,0x0D,0x04,0x0C,0xFF,0xFF, /* 00000258 "D......." */ + 0x0D,0x00,0x00,0x4C,0x4E,0x4B,0x42,0x00, /* 00000260 "...LNKB." */ + 0x12,0x0D,0x04,0x0C,0xFF,0xFF,0x0D,0x00, /* 00000268 "........" */ + 0x01,0x4C,0x4E,0x4B,0x43,0x00,0x12,0x0E, /* 00000270 ".LNKC..." */ + 0x04,0x0C,0xFF,0xFF,0x0D,0x00,0x0A,0x02, /* 00000278 "........" */ + 0x4C,0x4E,0x4B,0x44,0x00,0x12,0x0E,0x04, /* 00000280 "LNKD...." */ + 0x0C,0xFF,0xFF,0x0D,0x00,0x0A,0x03,0x4C, /* 00000288 ".......L" */ + 0x4E,0x4B,0x41,0x00,0x12,0x0D,0x04,0x0C, /* 00000290 "NKA....." */ + 0xFF,0xFF,0x10,0x00,0x00,0x4C,0x4E,0x4B, /* 00000298 ".....LNK" */ + 0x41,0x00,0x12,0x0D,0x04,0x0C,0xFF,0xFF, /* 000002A0 "A......." */ + 0x10,0x00,0x01,0x4C,0x4E,0x4B,0x42,0x00, /* 000002A8 "...LNKB." */ + 0x12,0x0E,0x04,0x0C,0xFF,0xFF,0x10,0x00, /* 000002B0 "........" */ + 0x0A,0x02,0x4C,0x4E,0x4B,0x43,0x00,0x12, /* 000002B8 "..LNKC.." */ + 0x0E,0x04,0x0C,0xFF,0xFF,0x10,0x00,0x0A, /* 000002C0 "........" */ + 0x03,0x4C,0x4E,0x4B,0x44,0x00,0x12,0x0D, /* 000002C8 ".LNKD..." */ + 0x04,0x0C,0xFF,0xFF,0x11,0x00,0x00,0x4C, /* 000002D0 ".......L" */ + 0x4E,0x4B,0x41,0x00,0x12,0x0D,0x04,0x0C, /* 000002D8 "NKA....." */ + 0xFF,0xFF,0x11,0x00,0x01,0x4C,0x4E,0x4B, /* 000002E0 ".....LNK" */ + 0x42,0x00,0x12,0x0E,0x04,0x0C,0xFF,0xFF, /* 000002E8 "B......." */ + 0x11,0x00,0x0A,0x02,0x4C,0x4E,0x4B,0x43, /* 000002F0 "....LNKC" */ + 0x00,0x12,0x0E,0x04,0x0C,0xFF,0xFF,0x11, /* 000002F8 "........" */ + 0x00,0x0A,0x03,0x4C,0x4E,0x4B,0x44,0x00, /* 00000300 "...LNKD." */ + 0x12,0x0D,0x04,0x0C,0xFF,0xFF,0x12,0x00, /* 00000308 "........" */ + 0x00,0x4C,0x4E,0x4B,0x41,0x00,0x12,0x0D, /* 00000310 ".LNKA..." */ + 0x04,0x0C,0xFF,0xFF,0x12,0x00,0x01,0x4C, /* 00000318 ".......L" */ + 0x4E,0x4B,0x42,0x00,0x12,0x0E,0x04,0x0C, /* 00000320 "NKB....." */ + 0xFF,0xFF,0x12,0x00,0x0A,0x02,0x4C,0x4E, /* 00000328 "......LN" */ + 0x4B,0x43,0x00,0x12,0x0E,0x04,0x0C,0xFF, /* 00000330 "KC......" */ + 0xFF,0x12,0x00,0x0A,0x03,0x4C,0x4E,0x4B, /* 00000338 ".....LNK" */ + 0x44,0x00,0x12,0x0D,0x04,0x0C,0xFF,0xFF, /* 00000340 "D......." */ + 0x13,0x00,0x00,0x4C,0x4E,0x4B,0x41,0x00, /* 00000348 "...LNKA." */ + 0x12,0x0D,0x04,0x0C,0xFF,0xFF,0x13,0x00, /* 00000350 "........" */ + 0x01,0x4C,0x4E,0x4B,0x42,0x00,0x12,0x0E, /* 00000358 ".LNKB..." */ + 0x04,0x0C,0xFF,0xFF,0x13,0x00,0x0A,0x02, /* 00000360 "........" */ + 0x4C,0x4E,0x4B,0x43,0x00,0x12,0x0E,0x04, /* 00000368 "LNKC...." */ + 0x0C,0xFF,0xFF,0x13,0x00,0x0A,0x03,0x4C, /* 00000370 ".......L" */ + 0x4E,0x4B,0x44,0x00,0x12,0x0D,0x04,0x0C, /* 00000378 "NKD....." */ + 0xFF,0xFF,0x14,0x00,0x00,0x4C,0x4E,0x4B, /* 00000380 ".....LNK" */ + 0x42,0x00,0x12,0x0D,0x04,0x0C,0xFF,0xFF, /* 00000388 "B......." */ + 0x14,0x00,0x01,0x4C,0x4E,0x4B,0x43,0x00, /* 00000390 "...LNKC." */ + 0x12,0x0E,0x04,0x0C,0xFF,0xFF,0x14,0x00, /* 00000398 "........" */ + 0x0A,0x02,0x4C,0x4E,0x4B,0x44,0x00,0x12, /* 000003A0 "..LNKD.." */ + 0x0E,0x04,0x0C,0xFF,0xFF,0x14,0x00,0x0A, /* 000003A8 "........" */ + 0x03,0x4C,0x4E,0x4B,0x41,0x00,0x12,0x0D, /* 000003B0 ".LNKA..." */ + 0x04,0x0C,0xFF,0xFF,0x01,0x00,0x00,0x4C, /* 000003B8 ".......L" */ + 0x4E,0x4B,0x41,0x00,0x12,0x0D,0x04,0x0C, /* 000003C0 "NKA....." */ + 0xFF,0xFF,0x01,0x00,0x01,0x4C,0x4E,0x4B, /* 000003C8 ".....LNK" */ + 0x42,0x00,0x12,0x0E,0x04,0x0C,0xFF,0xFF, /* 000003D0 "B......." */ + 0x01,0x00,0x0A,0x02,0x4C,0x4E,0x4B,0x43, /* 000003D8 "....LNKC" */ + 0x00,0x12,0x0E,0x04,0x0C,0xFF,0xFF,0x01, /* 000003E0 "........" */ + 0x00,0x0A,0x03,0x4C,0x4E,0x4B,0x44,0x00, /* 000003E8 "...LNKD." */ + +}; Index: src/mainboard/via/epia-n/fadt.c =================================================================== --- src/mainboard/via/epia-n/fadt.c (revision 0) +++ src/mainboard/via/epia-n/fadt.c (revision 0) @@ -0,0 +1,155 @@ +/* + * ACPI - create the Fixed ACPI Description Tables (FADT) + * (C) Copyright 2004 Nick Barker nick.barker9@btinternet.com + * + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, + * MA 02110-1301 USA + */ + + +#include <string.h> +#include <arch/acpi.h> + +void acpi_create_fadt(acpi_fadt_t *fadt,acpi_facs_t *facs,void *dsdt){ + acpi_header_t *header=&(fadt->header); + + memset((void *)fadt,0,sizeof(acpi_fadt_t)); + memcpy(header->signature,"FACP",4); + header->length = 244; + header->revision = 1; + memcpy(header->oem_id,OEM_ID,6); + memcpy(header->oem_table_id,"COREBOOT",8); + memcpy(header->asl_compiler_id,ASLC,4); + header->asl_compiler_revision=0; + + fadt->firmware_ctrl=facs; + fadt->dsdt= dsdt; + fadt->preferred_pm_profile=0; + fadt->sci_int=5; + fadt->smi_cmd = 0; + fadt->acpi_enable = 0; + fadt->acpi_disable = 0; + fadt->s4bios_req = 0x0; + fadt->pstate_cnt = 0x0; + + fadt->pm1a_evt_blk = 0x400; + fadt->pm1b_evt_blk = 0x0; + fadt->pm1a_cnt_blk = 0x404; + fadt->pm1b_cnt_blk = 0x0; + fadt->pm2_cnt_blk = 0x0; + fadt->pm_tmr_blk = 0x408; + fadt->gpe0_blk = 0x420; + fadt->gpe1_blk = 0x0; + + fadt->pm1_evt_len = 4; + fadt->pm1_cnt_len = 2; + fadt->pm2_cnt_len = 0; + fadt->pm_tmr_len = 4; + fadt->gpe0_blk_len = 4; + fadt->gpe1_blk_len = 0; + fadt->gpe1_base = 0; + fadt->cst_cnt = 0; + fadt->p_lvl2_lat = 90; + fadt->p_lvl3_lat = 900; + fadt->flush_size = 0; + fadt->flush_stride = 0; + fadt->duty_offset = 0; + fadt->duty_width = 1; + fadt->day_alrm = 125; + fadt->mon_alrm = 126; + fadt->century = 50; + fadt->iapc_boot_arch = 0x1; + fadt->flags = 0x4a5; + + fadt->reset_reg.space_id = 0; + fadt->reset_reg.bit_width = 0; + fadt->reset_reg.bit_offset = 0; + fadt->reset_reg.resv = 0; + fadt->reset_reg.addrl = 0x0; + fadt->reset_reg.addrh = 0x0; + + fadt->reset_value = 0; + fadt->x_firmware_ctl_l = facs; + fadt->x_firmware_ctl_h = 0; + fadt->x_dsdt_l = dsdt; + fadt->x_dsdt_h = 0; + + fadt->x_pm1a_evt_blk.space_id = 1; + fadt->x_pm1a_evt_blk.bit_width = 4; + fadt->x_pm1a_evt_blk.bit_offset = 0; + fadt->x_pm1a_evt_blk.resv = 0; + fadt->x_pm1a_evt_blk.addrl = 0x400; + fadt->x_pm1a_evt_blk.addrh = 0x0; + + + fadt->x_pm1b_evt_blk.space_id = 1; + fadt->x_pm1b_evt_blk.bit_width = 4; + fadt->x_pm1b_evt_blk.bit_offset = 0; + fadt->x_pm1b_evt_blk.resv = 0; + fadt->x_pm1b_evt_blk.addrl = 0x0; + fadt->x_pm1b_evt_blk.addrh = 0x0; + + + fadt->x_pm1a_cnt_blk.space_id = 1; + fadt->x_pm1a_cnt_blk.bit_width = 2; + fadt->x_pm1a_cnt_blk.bit_offset = 0; + fadt->x_pm1a_cnt_blk.resv = 0; + fadt->x_pm1a_cnt_blk.addrl = 0x404; + fadt->x_pm1a_cnt_blk.addrh = 0x0; + + + fadt->x_pm1b_cnt_blk.space_id = 1; + fadt->x_pm1b_cnt_blk.bit_width = 2; + fadt->x_pm1b_cnt_blk.bit_offset = 0; + fadt->x_pm1b_cnt_blk.resv = 0; + fadt->x_pm1b_cnt_blk.addrl = 0x0; + fadt->x_pm1b_cnt_blk.addrh = 0x0; + + + fadt->x_pm2_cnt_blk.space_id = 1; + fadt->x_pm2_cnt_blk.bit_width = 0; + fadt->x_pm2_cnt_blk.bit_offset = 0; + fadt->x_pm2_cnt_blk.resv = 0; + fadt->x_pm2_cnt_blk.addrl = 0x0; + fadt->x_pm2_cnt_blk.addrh = 0x0; + + + fadt->x_pm_tmr_blk.space_id = 1; + fadt->x_pm_tmr_blk.bit_width = 4; + fadt->x_pm_tmr_blk.bit_offset = 0; + fadt->x_pm_tmr_blk.resv = 0; + fadt->x_pm_tmr_blk.addrl = 0x408; + fadt->x_pm_tmr_blk.addrh = 0x0; + + + fadt->x_gpe0_blk.space_id = 1; + fadt->x_gpe0_blk.bit_width = 0; + fadt->x_gpe0_blk.bit_offset = 0; + fadt->x_gpe0_blk.resv = 0; + fadt->x_gpe0_blk.addrl = 0x420; + fadt->x_gpe0_blk.addrh = 0x0; + + + fadt->x_gpe1_blk.space_id = 1; + fadt->x_gpe1_blk.bit_width = 0; + fadt->x_gpe1_blk.bit_offset = 0; + fadt->x_gpe1_blk.resv = 0; + fadt->x_gpe1_blk.addrl = 0x0; + fadt->x_gpe1_blk.addrh = 0x0; + + header->checksum = acpi_checksum((void *)fadt, sizeof(acpi_fadt_t)); + +} Index: src/mainboard/via/epia-n/Config.lb =================================================================== --- src/mainboard/via/epia-n/Config.lb (revision 0) +++ src/mainboard/via/epia-n/Config.lb (revision 0) @@ -0,0 +1,195 @@ +## +## This file is part of the coreboot project. +## +## Copyright (C) 2008 VIA Technologies, Inc. +## (Written by Aaron Lwe aaron.lwe@gmail.com for VIA) +## +## This program is free software; you can redistribute it and/or modify +## it under the terms of the GNU General Public License as published by +## the Free Software Foundation; either version 2 of the License, or +## (at your option) any later version. +## +## This program is distributed in the hope that it will be useful, +## but WITHOUT ANY WARRANTY; without even the implied warranty of +## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +## GNU General Public License for more details. +## +## You should have received a copy of the GNU General Public License +## along with this program; if not, write to the Free Software +## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA +## + +## XIP_ROM_SIZE must be a power of 2. +default XIP_ROM_SIZE = 64 * 1024 + +include /config/nofailovercalculation.lb + +## +## Set all of the defaults for an x86 architecture +## +arch i386 end + +## +## Build the objects we have code for in this directory. +## + +driver mainboard.o +if HAVE_PIRQ_TABLE object irq_tables.o end + +object vgabios.o + +if HAVE_MP_TABLE object mptable.o end + +if HAVE_ACPI_TABLES + object fadt.o + object dsdt.o + object acpi_tables.o +end +makerule ./failover.E + depends "$(MAINBOARD)/../../../arch/i386/lib/failover.c ../romcc" + action "../romcc -E -O --label-prefix=failover -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/../../../arch/i386/lib/failover.c -o $@" +end +makerule ./failover.inc + depends "$(MAINBOARD)/../../../arch/i386/lib/failover.c ../romcc" + action "../romcc -O --label-prefix=failover -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/../../../arch/i386/lib/failover.c -o $@" +end +makerule ./auto.E + depends "$(MAINBOARD)/auto.c option_table.h ../romcc" + action "../romcc -E -mcpu=c3 -O -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/auto.c -o $@" +end +makerule ./auto.inc + depends "$(MAINBOARD)/auto.c option_table.h ../romcc" + action "../romcc -mcpu=c3 -O -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/auto.c -o $@" +end + +## +## Build our 16 bit and 32 bit coreboot entry code +## +mainboardinit cpu/x86/16bit/entry16.inc +mainboardinit cpu/x86/32bit/entry32.inc +ldscript /cpu/x86/16bit/entry16.lds +ldscript /cpu/x86/32bit/entry32.lds + +## +## Build our reset vector (This is where coreboot is entered) +## +if USE_FALLBACK_IMAGE + mainboardinit cpu/x86/16bit/reset16.inc + ldscript /cpu/x86/16bit/reset16.lds +else + mainboardinit cpu/x86/32bit/reset32.inc + ldscript /cpu/x86/32bit/reset32.lds +end + +### Should this be in the northbridge code? +mainboardinit arch/i386/lib/cpu_reset.inc + +## +## Include an id string (For safe flashing) +## +mainboardinit arch/i386/lib/id.inc +ldscript /arch/i386/lib/id.lds + +### +### This is the early phase of coreboot startup +### Things are delicate and we test to see if we should +### failover to another image. +### +if USE_FALLBACK_IMAGE + ldscript /arch/i386/lib/failover.lds + mainboardinit ./failover.inc +end + +### +### O.k. We aren't just an intermediary anymore! +### + +## +## Setup RAM +## + +mainboardinit cpu/x86/fpu/enable_fpu.inc +mainboardinit cpu/x86/mmx/enable_mmx.inc +mainboardinit ./auto.inc +mainboardinit cpu/x86/mmx/disable_mmx.inc + +dir /pc80 +config chip.h + +chip northbridge/via/cn400 # Northbridge + + device apic_cluster 0 on # APIC cluster + chip cpu/via/model_c3 # VIA C3 + device apic 0 on end # APIC + end + end + + device pci_domain 0 on # PCI domain + device pci 0.0 on end # AGP Bridge + device pci 0.1 on end # Error Reporting + device pci 0.2 on end # Host Bus Control + device pci 0.3 on end # Memory Controller + device pci 0.4 on end # Power Management + device pci 0.7 on end # V-Link Controller + device pci 1.0 on end # PCI Bridge + chip southbridge/via/vt8237r # Southbridge + # Enable both IDE channels. + register "ide0_enable" = "1" + register "ide1_enable" = "1" + # Both cables are 40pin. + register "ide0_80pin_cable" = "0" + register "ide1_80pin_cable" = "0" + device pci f.0 on end # IDE + register "fn_ctrl_lo" = "0x80" + register "fn_ctrl_hi" = "0x1d" + device pci 10.0 on end # OHCI + device pci 10.1 on end # OHCI + device pci 10.2 on end # OHCI + device pci 10.3 on end # OHCI + device pci 10.4 on end # EHCI + device pci 11.0 on # Southbridge LPC + chip superio/winbond/w83697hf # Super I/O + device pnp 2e.0 off # Floppy + io 0x60 = 0x3f0 + irq 0x70 = 6 + drq 0x74 = 2 + end + device pnp 2e.1 off # Parallel Port + io 0x60 = 0x378 + irq 0x70 = 7 + drq 0x74 = 3 + end + device pnp 2e.2 on # COM1 + io 0x60 = 0x3f8 + irq 0x70 = 4 + end + device pnp 2e.3 off # COM2 + io 0x60 = 0x2f8 + irq 0x70 = 3 + end + device pnp 2e.6 off # IR Port + io 0x60 = 0x000 + end + device pnp 2e.7 off # GPIO 1 + io 0x60 = 0x201 # 0x201 + end + device pnp 2e.8 off # GPIO 5 + io 0x60 = 0x330 # 0x330 + end + device pnp 2e.9 off # GPIO 2, 3,and 4 + io 0x60 = 0x000 # + end + device pnp 2e.a off # ACPI + io 0x60 = 0x000 # + end + device pnp 2e.b on # HWM + io 0x60 = 0x290 + end + end + end + device pci 11.5 off end # AC'97 audio + # device pci 11.6 off end # AC'97 Modem + device pci 12.0 on end # Ethernet + end + end +end Index: src/mainboard/via/epia-n/irq_tables.c =================================================================== --- src/mainboard/via/epia-n/irq_tables.c (revision 0) +++ src/mainboard/via/epia-n/irq_tables.c (revision 0) @@ -0,0 +1,34 @@ +/* This file was generated by getpir.c, do not modify! + (but if you do, please run checkpir on it to verify) + * Contains the IRQ Routing Table dumped directly from your memory, which BIOS sets up + * + * Documentation at : http://www.microsoft.com/hwdev/busbios/PCIIRQ.HTM +*/ + +#include <arch/pirq_routing.h> + +const struct irq_routing_table intel_irq_routing_table = { + PIRQ_SIGNATURE, /* u32 signature */ + PIRQ_VERSION, /* u16 version */ + 32+16*5, /* there can be total 5 devices on the bus */ + 0x00, /* Where the interrupt router lies (bus) */ + (0x00<<3)|0x0, /* Where the interrupt router lies (dev) */ + 0xc20, /* IRQs devoted exclusively to PCI usage */ + 0, /* Vendor */ + 0, /* Device */ + 0, /* Crap (miniport) */ + { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, /* u8 rfu[11] */ + 0x68, /* u8 checksum , this hase to set to some value that would give 0 after the sum of all bytes for this structure (including checksum) */ + { + /* bus, dev|fn, {link, bitmap}, {link, bitmap}, {link, bitmap}, {link, bitmap}, slot, rfu */ + {0x00,(0x14<<3)|0x0, {{0x02, 0xdeb8}, {0x03, 0xdeb8}, {0x04, 0xdeb8}, {0x01, 0x0deb8}}, 0x1, 0x0}, + {0x00,(0x13<<3)|0x0, {{0x01, 0xdeb8}, {0x02, 0xdeb8}, {0x03, 0xdeb8}, {0x04, 0x0deb8}}, 0x2, 0x0}, + {0x00,(0x0a<<3)|0x0, {{0x04, 0xdeb8}, {0x01, 0xdeb8}, {0x02, 0xdeb8}, {0x03, 0x0deb8}}, 0x3, 0x0}, + {0x00,(0x0d<<3)|0x0, {{0x02, 0xdeb8}, {0x03, 0xdeb8}, {0x04, 0xdeb8}, {0x01, 0x0deb8}}, 0x4, 0x0}, + {0x00,(0x01<<3)|0x0, {{0x01, 0xdeb8}, {0x02, 0xdeb8}, {0x03, 0xdeb8}, {0x04, 0x0deb8}}, 0x0, 0x0}, + } +}; +unsigned long write_pirq_routing_table(unsigned long addr) +{ + return copy_pirq_routing_table(addr); +} Index: src/mainboard/via/epia-n/Options.lb =================================================================== --- src/mainboard/via/epia-n/Options.lb (revision 0) +++ src/mainboard/via/epia-n/Options.lb (revision 0) @@ -0,0 +1,122 @@ +## +## This file is part of the coreboot project. +## +## Copyright (C) 2008 VIA Technologies, Inc. +## (Written by Aaron Lwe aaron.lwe@gmail.com for VIA) +## +## This program is free software; you can redistribute it and/or modify +## it under the terms of the GNU General Public License as published by +## the Free Software Foundation; either version 2 of the License, or +## (at your option) any later version. +## +## This program is distributed in the hope that it will be useful, +## but WITHOUT ANY WARRANTY; without even the implied warranty of +## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +## GNU General Public License for more details. +## +## You should have received a copy of the GNU General Public License +## along with this program; if not, write to the Free Software +## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA +## + +uses HAVE_MP_TABLE +uses CONFIG_CBFS +uses HAVE_PIRQ_TABLE +uses HAVE_FAILOVER_BOOT +uses USE_FAILOVER_IMAGE +uses USE_FALLBACK_IMAGE +uses HAVE_FALLBACK_BOOT +uses HAVE_HARD_RESET +uses HAVE_OPTION_TABLE +uses USE_OPTION_TABLE +uses CONFIG_ROM_PAYLOAD +uses IRQ_SLOT_COUNT +uses MAINBOARD +uses MAINBOARD_VENDOR +uses MAINBOARD_PART_NUMBER +uses COREBOOT_EXTRA_VERSION +uses ARCH +uses CONFIG_LB_MEM_TOPK +uses FALLBACK_SIZE +uses STACK_SIZE +uses HEAP_SIZE +uses ROM_SIZE +uses ROM_SECTION_SIZE +uses ROM_IMAGE_SIZE +uses ROM_SECTION_SIZE +uses ROM_SECTION_OFFSET +uses CONFIG_ROM_PAYLOAD_START +uses CONFIG_COMPRESSED_PAYLOAD_NRV2B +uses CONFIG_COMPRESSED_PAYLOAD_LZMA +uses PAYLOAD_SIZE +uses _ROMBASE +uses _RAMBASE +uses XIP_ROM_SIZE +uses XIP_ROM_BASE +uses HAVE_MP_TABLE +uses HAVE_ACPI_TABLES +uses HAVE_ACPI_RESUME +uses CROSS_COMPILE +uses CC +uses HOSTCC +uses OBJCOPY +uses DEFAULT_CONSOLE_LOGLEVEL +uses MAXIMUM_CONSOLE_LOGLEVEL +uses CONFIG_CONSOLE_SERIAL8250 +uses CONFIG_UDELAY_TSC +uses CONFIG_TSC_X86RDTSC_CALIBRATE_WITH_TIMER2 +uses CONFIG_PCI_ROM_RUN +uses CONFIG_CONSOLE_VGA +uses CONFIG_MAX_PCI_BUSES +uses TTYS0_BAUD +uses CONFIG_VIDEO_MB +uses CONFIG_IOAPIC +uses CONFIG_COMPRESS + +#default CONFIG_LB_MEM_TOPK = 4 * 1024 +default ROM_SIZE = 512 * 1024 +default CONFIG_COMPRESS = 1 +default CONFIG_IOAPIC = 0 +default CONFIG_VIDEO_MB = 64 +default CONFIG_CONSOLE_SERIAL8250 = 1 +default CONFIG_PCI_ROM_RUN = 0 +default CONFIG_CONSOLE_VGA = 0 +default HAVE_FAILOVER_BOOT = 0 +default USE_FAILOVER_IMAGE = 0 +default HAVE_FALLBACK_BOOT = 1 +default HAVE_MP_TABLE = 0 +default CONFIG_UDELAY_TSC = 1 +default CONFIG_TSC_X86RDTSC_CALIBRATE_WITH_TIMER2 = 1 +default HAVE_HARD_RESET = 0 +default HAVE_PIRQ_TABLE = 1 +default IRQ_SLOT_COUNT = 9 +default HAVE_ACPI_TABLES = 0 +default HAVE_OPTION_TABLE = 1 +default ROM_IMAGE_SIZE = 67 * 1024 +default PAYLOAD_SIZE = 125 * 1024 +default FALLBACK_SIZE = ROM_IMAGE_SIZE + PAYLOAD_SIZE +default USE_FALLBACK_IMAGE = 1 +default STACK_SIZE = 8 * 1024 +default HEAP_SIZE = 16 * 1024 +#default USE_OPTION_TABLE = !USE_FALLBACK_IMAGE +default USE_OPTION_TABLE = 0 +default _RAMBASE = 0x00004000 +default CONFIG_ROM_PAYLOAD = 1 +default CROSS_COMPILE = "" +default CC = "$(CROSS_COMPILE)gcc -m32 -fno-stack-protector" +default HOSTCC = "gcc" + +## +## Set this to the max PCI bus number you would ever use for PCI config I/O. +## Setting this number very high will make pci_locate_device() take a long +## time when it can't find a device. +## +default CONFIG_MAX_PCI_BUSES = 3 + + +# +# CBFS +# +# +default CONFIG_CBFS=0 +end Index: src/mainboard/via/epia-n/vgachip.h =================================================================== --- src/mainboard/via/epia-n/vgachip.h (revision 0) +++ src/mainboard/via/epia-n/vgachip.h (revision 0) @@ -0,0 +1,15 @@ +#ifndef _PC80_VGABIOS +#define _PC80_VGABIOS + +extern struct chip_control pc80_vgabios_control; + +struct pc80_vgabios_config { + int nothing; +}; + +void vga_enable_console(void); +void do_vgabios(void); +void setup_realmode_idt(void); +void write_protect_vgabios(void); + +#endif /* _PC80_VGABIOS */ Index: src/mainboard/via/epia-n/failover.c =================================================================== --- src/mainboard/via/epia-n/failover.c (revision 0) +++ src/mainboard/via/epia-n/failover.c (revision 0) @@ -0,0 +1,34 @@ +#define ASSEMBLY 1 +#include <stdint.h> +#include <device/pci_def.h> +#include <device/pci_ids.h> +#include <arch/io.h> +#include "arch/romcc_io.h" +#include "pc80/mc146818rtc_early.c" + +static unsigned long main(unsigned long bist) +{ +#if 0 + /* This is the primary cpu how should I boot? */ + if (do_normal_boot()) { + goto normal_image; + } + else { + goto fallback_image; + } + normal_image: + asm volatile ("jmp __normal_image" + : /* outputs */ + : "a" (bist) /* inputs */ + : /* clobbers */ + ); + cpu_reset: + asm volatile ("jmp __cpu_reset" + : /* outputs */ + : "a"(bist) /* inputs */ + : /* clobbers */ + ); + fallback_image: +#endif + return bist; +} Index: src/mainboard/via/epia-n/auto.c =================================================================== --- src/mainboard/via/epia-n/auto.c (revision 0) +++ src/mainboard/via/epia-n/auto.c (revision 0) @@ -0,0 +1,166 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2008 VIA Technologies, Inc. + * (Written by Aaron Lwe aaron.lwe@gmail.com for VIA) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#define ASSEMBLY 1 + +#include <stdint.h> +#include <device/pci_def.h> +#include <device/pci_ids.h> +#include <arch/io.h> +#include <device/pnp_def.h> +#include <arch/romcc_io.h> +#include <arch/hlt.h> +#include "pc80/serial.c" +#include "arch/i386/lib/console.c" +#include "ram/ramtest.c" +#include "northbridge/via/cn400/raminit.h" +#include "cpu/x86/mtrr/earlymtrr.c" +#include "cpu/x86/bist.h" +#include "pc80/udelay_io.c" +#include "lib/delay.c" +#include "cpu/x86/lapic/boot_cpu.c" +#include "southbridge/via/vt8237r/vt8237r_early_smbus.c" +#include "superio/winbond/w83697hf/w83697hf_early_serial.c" + +#define SERIAL_DEV PNP_DEV(0x2e, W83697HF_SP1) + +/* + * NOOB :: + * d0f0 - Device 0 Function 0 etc. + */ +static const struct mem_controller ctrl = { + .d0f0 = 0x0000, + .d0f2 = 0x2000, + .d0f3 = 0x3000, + .d0f4 = 0x4000, + .d0f7 = 0x7000, + .d1f0 = 0x8000, + .channel0 = { 0x50 }, +}; + + +static void memreset_setup(void) +{ +} + +static inline int spd_read_byte(unsigned device, unsigned address) +{ + return smbus_read_byte(device, address); +} + +#include "northbridge/via/cn400/raminit.c" + +static void enable_mainboard_devices(void) +{ + device_t dev; + u8 reg; + + dev = pci_locate_device(PCI_ID(0x1106, 0x7259), 0); + if (dev == PCI_DEV_INVALID) + die("Northbridge V-Link not found!!!\n"); + pci_write_config8(dev, 0x4F, 0x01); + pci_write_config8(dev, 0x48, 0x13); + + + dev = pci_locate_device(PCI_ID(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT8237R_LPC), 0); + if (dev == PCI_DEV_INVALID) + die("Southbridge not found!!!\n"); + + /* bit=0 means enable function (per VT8237R datasheet) + * 7 17.6 MC97 + * 6 17.5 AC97 + * 5 16.1 USB 2 + * 4 16.0 USB 1 + * 3 15.0 SATA and PATA + * 2 16.2 USB 3 + * 1 16.4 USB EHCI + */ + pci_write_config8(dev, 0x50, 0x80); + + /*bit=0 means enable internal function (per VT8237R datasheet) + * 7 USB Device Mode + *bit=1 means enable internal function (per VT8237R datasheet) + * 6 Reserved + * 5 LAN Controller Clock Gating + * 4 LAN Controller + * 3 Internal RTC + * 2 Internal PS2 Mouse + * 1 Internal KBC Configuration + * 0 Internal Keyboard Controller + */ + pci_write_config8(dev, 0x51, 0x1d); +} + +static void enable_shadow_ram(void) +{ + unsigned char shadowreg; + + shadowreg = pci_read_config8(ctrl.d0f3, 0x82); + /* 0xf0000-0xfffff Read/Write*/ + shadowreg |= 0x30; + pci_write_config8(ctrl.d0f3, 0x82, shadowreg); +} + +static void main(unsigned long bist) +{ + unsigned long x; + device_t dev; + + /* Enable multifunction for northbridge. */ + pci_write_config8(ctrl.d0f0, 0x4f, 0x01); + + w83697hf_set_clksel_48(SERIAL_DEV); + + w83697hf_enable_serial(SERIAL_DEV, TTYS0_BASE); + + uart_init(); + console_init(); + + print_spew("In auto.c:main()\r\n"); + + enable_smbus(); + smbus_fixup(&ctrl); + + /* Halt if there was a built-in self test failure. */ + report_bist_failure(bist); + + print_debug("Enabling mainboard devices\r\n"); + enable_mainboard_devices(); + + print_debug("Enable F-ROM Shadow RAM\r\n"); + enable_shadow_ram(); + + /* setup cpu */ + print_debug("Setup CPU Interface\r\n"); + c3_cpu_setup(ctrl.d0f2); + + + ddr_ram_setup(); + + if (bist == 0) { + print_debug("doing early_mtrr\r\n"); + early_mtrr_init(); + } + + //ram_check(0, 640 * 1024); + + print_spew("Leaving auto.c:main()\r\n"); +} Index: src/mainboard/via/epia-n/chip.h =================================================================== --- src/mainboard/via/epia-n/chip.h (revision 0) +++ src/mainboard/via/epia-n/chip.h (revision 0) @@ -0,0 +1,26 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2008 VIA Technologies, Inc. + * (Written by Aaron Lwe aaron.lwe@gmail.com for VIA) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +extern struct chip_operations mainboard_ops; + +struct mainboard_config { + int nothing; +}; Index: src/mainboard/via/epia-n/vgabios.c =================================================================== --- src/mainboard/via/epia-n/vgabios.c (revision 0) +++ src/mainboard/via/epia-n/vgabios.c (revision 0) @@ -0,0 +1,839 @@ +#include <console/console.h> +#include <device/pci.h> +#include <device/pci_ids.h> +#include <device/pci_ops.h> +#undef __KERNEL__ +#include <arch/io.h> +//#include <printk.h> +#include <string.h> +#include "vgachip.h" + +/* vgabios.c. Derived from: */ + +/*------------------------------------------------------------ -*- C -*- + * 2 Kernel Monte a.k.a. Linux loading Linux on x86 + * + * Erik Arjan Hendriks hendriks@lanl.gov + * + * This version is a derivative of the original two kernel monte + * which is (C) 2000 Scyld. + * + * Copyright (C) 2000 Scyld Computing Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + * + * Portions related to the alpha architecture are: + * + * Copyright(C) 2001 University of California. LA-CC Number 01-67. + * This software has been authored by an employee or employees of the + * University of California, operator of the Los Alamos National + * Laboratory under Contract No. W-7405-ENG-36 with the U.S. + * Department of Energy. The U.S. Government has rights to use, + * reproduce, and distribute this software. If the software is + * modified to produce derivative works, such modified software should + * be clearly marked, so as not to confuse it with the version + * available from LANL. + * + * This software may be used and distributed according to the terms + * of the GNU General Public License, incorporated herein by + * reference to http://www.gnu.org/licenses/gpl.html. + * + * This software is provided by the author(s) "as is" and any express + * or implied warranties, including, but not limited to, the implied + * warranties of merchantability and fitness for a particular purpose + * are disclaimed. In no event shall the author(s) be liable for any + * direct, indirect, incidental, special, exemplary, or consequential + * damages (including, but not limited to, procurement of substitute + * goods or services; loss of use, data, or profits; or business + * interruption) however caused and on any theory of liability, + * whether in contract, strict liability, or tort (including + * negligence or otherwise) arising in any way out of the use of this + * software, even if advised of the possibility of such damage. + * + * $Id: vgabios.c,v 1.5 2004/10/06 17:33:52 rminnich Exp $ + *--------------------------------------------------------------------*/ + +/* Modified to be a self sufficient plug in so that it can be used + without reliance on other parts of core coreboot + (C) 2005 Nick.Barker9@btinternet.com + + Used initially for epia-m where there are problems getting the bios + emulator to successfully run this bios. +*/ + +/* Declare a temporary global descriptor table - necessary because the + Core part of the bios no longer sets up any 16 bit segments */ +__asm__ ( + /* pointer to original gdt */ + "gdtarg: \n" + " .word gdt_limit \n" + " .long gdt \n" + + /* compute the table limit */ + "__mygdt_limit = __mygdt_end - __mygdt - 1 \n" + + "__mygdtaddr: \n" + " .word __mygdt_limit \n" + " .long __mygdt \n" + + "__mygdt: \n" + /* selgdt 0, unused */ + " .word 0x0000, 0x0000 \n" + " .byte 0x00, 0x00, 0x00, 0x00 \n" + + /* selgdt 8, unused */ + " .word 0x0000, 0x0000 \n" + " .byte 0x00, 0x00, 0x00, 0x00 \n" + + /* selgdt 0x10, flat code segment */ + " .word 0xffff, 0x0000 \n" + " .byte 0x00, 0x9b, 0xcf, 0x00 \n" + + /* selgdt 0x18, flat data segment */ + " .word 0xffff, 0x0000 \n" + " .byte 0x00, 0x93, 0xcf, 0x00 \n" + + /* selgdt 0x20, unused */ + " .word 0x0000, 0x0000 \n" + " .byte 0x00, 0x00, 0x00, 0x00 \n" + + /* selgdt 0x28 16-bit 64k code at 0x00000000 */ + " .word 0xffff, 0x0000 \n" + " .byte 0, 0x9a, 0, 0 \n" + + /* selgdt 0x30 16-bit 64k data at 0x00000000 */ + " .word 0xffff, 0x0000 \n" + " .byte 0, 0x92, 0, 0 \n" + + "__mygdt_end: \n" +); + +/* Declare a pointer to where our idt is going to be i.e. at mem zero */ +__asm__ ("__myidt: \n" + /* 16-bit limit */ + " .word 1023 \n" + /* 24-bit base */ + " .long 0 \n" + " .word 0 \n" +); + +/* The address arguments to this function are PHYSICAL ADDRESSES */ +static void real_mode_switch_call_vga(unsigned long devfn) +{ + __asm__ __volatile__ ( + // paranoia -- does ecx get saved? not sure. This is + // the easiest safe thing to do. + " pushal \n" + /* save the stack */ + " mov %esp, __stack \n" + " jmp 1f \n" + "__stack: .long 0 \n" + "1:\n" + /* get devfn into %ecx */ + " movl %esp, %ebp \n" + " movl 8(%ebp), %ecx \n" + /* load 'our' gdt */ + " lgdt %cs:__mygdtaddr \n" + + /* This configures CS properly for real mode. */ + " ljmp $0x28, $__rms_16bit\n" + "__rms_16bit: \n" + " .code16 \n" + /* 16 bit code from here on... */ + + /* Load the segment registers w/ properly configured segment + * descriptors. They will retain these configurations (limits, + * writability, etc.) once protected mode is turned off. */ + " mov $0x30, %ax \n" + " mov %ax, %ds \n" + " mov %ax, %es \n" + " mov %ax, %fs \n" + " mov %ax, %gs \n" + " mov %ax, %ss \n" + + /* Turn off protection (bit 0 in CR0) */ + " movl %cr0, %eax \n" + " andl $0xFFFFFFFE, %eax \n" + " movl %eax, %cr0 \n" + + /* Now really going into real mode */ + " ljmp $0, $__rms_real\n" + "__rms_real: \n" + + /* put the stack at the end of page zero. + * that way we can easily share it between real and protected, + * since the 16-bit ESP at segment 0 will work for any case. + /* Setup a stack */ + " mov $0x0, %ax \n" + " mov %ax, %ss \n" + " movl $0x1000, %eax \n" + " movl %eax, %esp \n" + + /* Load our 16 it idt */ + " xor %ax, %ax \n" + " mov %ax, %ds \n" + " lidt __myidt \n" + + /* Dump zeros in the other segregs */ + " mov %ax, %es \n" + " mov %ax, %fs \n" + " mov %ax, %gs \n" + " mov $0x40, %ax \n" + " mov %ax, %ds \n" + " mov %cx, %ax \n" + + /* run VGA BIOS at 0xc000:0003 */ + " lcall $0xc000, $0x0003\n" + + /* if we got here, just about done. + * Need to get back to protected mode */ + " movl %cr0, %eax \n" + " orl $0x0000001, %eax\n" /* PE = 1 */ + " movl %eax, %cr0 \n" + + /* Now that we are in protected mode jump to a 32 bit code segment. */ + " data32 ljmp $0x10, $vgarestart\n" + "vgarestart:\n" + " .code32\n" + " movw $0x18, %ax \n" + " mov %ax, %ds \n" + " mov %ax, %es \n" + " mov %ax, %fs \n" + " mov %ax, %gs \n" + " mov %ax, %ss \n" + + /* restore proper gdt and idt */ + " lgdt %cs:gdtarg \n" + " lidt idtarg \n" + + ".globl vga_exit \n" + "vga_exit: \n" + " mov __stack, %esp \n" + " popal \n" + ); +} + +__asm__ (".text\n""real_mode_switch_end:\n"); +extern char real_mode_switch_end[]; + +/* call vga bios int 10 function 0x4f14 to enable main console + epia-m does not always autosence the main console so forcing it on is good !! */ +void vga_enable_console() +{ + __asm__ __volatile__ ( + /* paranoia -- does ecx get saved? not sure. This is + * the easiest safe thing to do. */ + " pushal \n" + /* save the stack */ + " mov %esp, __stack \n" + + /* load 'our' gdt */ + " lgdt %cs:__mygdtaddr \n" + + /* This configures CS properly for real mode. */ + " ljmp $0x28, $__vga_ec_16bit\n" + "__vga_ec_16bit: \n" + " .code16 \n" + /* 16 bit code from here on... */ + + /* Load the segment registers w/ properly configured segment + * descriptors. They will retain these configurations (limits, + * writability, etc.) once protected mode is turned off. */ + " mov $0x30, %ax \n" + " mov %ax, %ds \n" + " mov %ax, %es \n" + " mov %ax, %fs \n" + " mov %ax, %gs \n" + " mov %ax, %ss \n" + + /* Turn off protection (bit 0 in CR0) */ + " movl %cr0, %eax \n" + " andl $0xFFFFFFFE, %eax\n" + " movl %eax, %cr0 \n" + + /* Now really going into real mode */ + " ljmp $0, $__vga_ec_real \n" + "__vga_ec_real: \n" + + /* put the stack at the end of page zero. + * that way we can easily share it between real and protected, + * since the 16-bit ESP at segment 0 will work for any case. + /* Setup a stack */ + " mov $0x0, %ax \n" + " mov %ax, %ss \n" + " movl $0x1000, %eax \n" + " movl %eax, %esp \n" + + /* debugging for RGM */ + " mov $0x11, %al \n" + " outb %al, $0x80 \n" + + /* Load our 16 it idt */ + " xor %ax, %ax \n" + " mov %ax, %ds \n" + " lidt __myidt \n" + + /* Dump zeros in the other segregs */ + " mov %ax, %ds \n" + " mov %ax, %es \n" + " mov %ax, %fs \n" + " mov %ax, %gs \n" + + /* ask bios to enable main console */ + /* set up for int 10 call - values found from X server + * bios call routines */ + " movw $0x4f14,%ax \n" + " movw $0x8003,%bx \n" + " movw $1, %cx \n" + " movw $0, %dx \n" + " movw $0, %di \n" + " int $0x10 \n" + + " movb $0x55, %al \n" + " outb %al, $0x80 \n" + + /* if we got here, just about done. + * Need to get back to protected mode */ + " movl %cr0, %eax \n" + " orl $0x0000001, %eax\n" /* PE = 1 */ + " movl %eax, %cr0 \n" + + /* Now that we are in protected mode jump to a 32 bit code segment. */ + " data32 ljmp $0x10, $vga_ec_restart\n" + "vga_ec_restart:\n" + " .code32\n" + " movw $0x18, %ax \n" + " mov %ax, %ds \n" + " mov %ax, %es \n" + " mov %ax, %fs \n" + " mov %ax, %gs \n" + " mov %ax, %ss \n" + + /* restore proper gdt and idt */ + " lgdt %cs:gdtarg \n" + " lidt idtarg \n" + " .globl vga__ec_exit \n" + "vga_ec_exit:\n" + " mov __stack, %esp \n" + " popal\n" + ); +} + +void do_vgabios(void) +{ + device_t dev; + unsigned long busdevfn; + unsigned int rom = 0; + unsigned char *buf; + unsigned int size = 64*1024; + int i; + + /* clear vga bios data area */ + for (i = 0x400; i < 0x500; i++) { + *(unsigned char *) i = 0; + } + + dev = dev_find_class(PCI_CLASS_DISPLAY_VGA<<8 , 0); + + if (!dev) { + printk_debug("NO VGA FOUND\n"); + return; + } + printk_debug("found VGA: vid=%x, did=%x\n", dev->vendor, dev->device); + + /* declare rom address here - keep any config data out of the way + * of core LXB stuff */ + + rom = 0xfffc0000; + pci_write_config32(dev, PCI_ROM_ADDRESS, rom|1); + printk_debug("rom base, size: %x\n", rom); + + buf = (unsigned char *) rom; + if ((buf[0] == 0x55) && (buf[1] == 0xaa)) { + memcpy((void *) 0xc0000, buf, size); + + write_protect_vgabios(); // in northbridge + + // check signature again + buf = (unsigned char *) 0xc0000; + if (buf[0]==0x55 && buf[1]==0xAA) { + busdevfn = (dev->bus->secondary << 8) | dev->path.pci.devfn; + printk_debug("bus/devfn = %#x\n", busdevfn); + + real_mode_switch_call_vga(busdevfn); + } else + printk_debug("Failed to copy VGA BIOS to 0xc0000\n"); + } else + printk_debug("BAD SIGNATURE 0x%x 0x%x\n", buf[0], buf[1]); + + pci_write_config32(dev, PCI_ROM_ADDRESS, 0); +} + + +// we had hoped to avoid this. +// this is a stub IDT only. It's main purpose is to ignore calls +// to the BIOS. +// no longer. Dammit. We have to respond to these. +struct realidt { + unsigned short offset, cs; +}; + +// from a handy writeup that andrey found. + +// handler. +// There are some assumptions we can make here. +// First, the Top Of Stack (TOS) is located on the top of page zero. +// we can share this stack between real and protected mode. +// that simplifies a lot of things ... +// we'll just push all the registers on the stack as longwords, +// and pop to protected mode. +// second, since this only ever runs as part of coreboot, +// we know all the segment register values -- so we don't save any. +// keep the handler that calls things small. It can do a call to +// more complex code in coreboot itself. This helps a lot as we don't +// have to do address fixup in this little stub, and calls are absolute +// so the handler is relocatable. +void handler(void) +{ + __asm__ __volatile__ ( + " .code16 \n" + "idthandle: \n" + " pushal \n" + " movb $0, %al \n" + " ljmp $0, $callbiosint16\n" + "end_idthandle: \n" + " .code32 \n" + ); +} + +void debughandler(void) +{ + __asm__ __volatile__ ( + " .code16 \n" + "debughandle: \n" + " pushw %cx \n" + " movw $250, %cx \n" + "dbh1: \n" + " loop dbh1 \n" + " popw %cx \n" + " iret \n" + "end_debughandle: \n" + ".code32 \n" + ); +} + +// Calling conventions. The first C function is called with this stuff +// on the stack. They look like value parameters, but note that if you +// modify them they will go back to the INTx function modified. +// the C function will call the biosint function with these as +// REFERENCE parameters. In this way, we can easily get +// returns back to the INTx caller (i.e. vgabios) +void callbiosint(void) +{ + __asm__ __volatile__ ( + " .code16 \n" + "callbiosint16: \n" + " push %ds \n" + " push %es \n" + " push %fs \n" + " push %gs \n" + // clean up the int #. To save space we put it in the lower + // byte. But the top 24 bits are junk. + " andl $0xff, %eax\n" + // this push does two things: + // - put the INT # on the stack as a parameter + // - provides us with a temp for the %cr0 mods. + " pushl %eax \n" + " movl %cr0, %eax\n" + " orl $0x00000001, %eax\n" /* PE = 1 */ + " movl %eax, %cr0\n" + /* Now that we are in protected mode jump to a 32 bit code segment. */ + " data32 ljmp $0x10, $biosprotect\n" + "biosprotect: \n" + " .code32 \n" + " movw $0x18, %ax \n" + " mov %ax, %ds \n" + " mov %ax, %es \n" + " mov %ax, %fs \n" + " mov %ax, %gs \n" + " mov %ax, %ss \n" + " lidt idtarg \n" + " call biosint \n" + // back to real mode ... + " ljmp $0x28, $__rms_16bit2\n" + "__rms_16bit2: \n" + " .code16 \n" + /* 16 bit code from here on... */ + /* Load the segment registers w/ properly configured segment + * descriptors. They will retain these configurations (limits, + * writability, etc.) once protected mode is turned off. */ + " mov $0x30, %ax \n" + " mov %ax, %ds \n" + " mov %ax, %es \n" + " mov %ax, %fs \n" + " mov %ax, %gs \n" + " mov %ax, %ss \n" + + /* Turn off protection (bit 0 in CR0) */ + " movl %cr0, %eax \n" + " andl $0xFFFFFFFE, %eax \n" + " movl %eax, %cr0 \n" + + /* Now really going into real mode */ + " ljmp $0, $__rms_real2 \n" + "__rms_real2: \n" + + /* Setup a stack + * FixME: where is esp? */ + " mov $0x0, %ax \n" + " mov %ax, %ss \n" + + /* ebugging for RGM */ + " mov $0x11, %al \n" + " outb %al, $0x80 \n" + + /* Load our 16 it idt */ + " xor %ax, %ax \n" + " mov %ax, %ds \n" + " lidt __myidt \n" + + /* Dump zeros in the other segregs */ + " mov %ax, %es \n" + " mov %ax, %fs \n" + " mov %ax, %gs \n" + " mov $0x40, %ax \n" + " mov %ax, %ds \n" + + /* pop the INT # that you pushed earlier */ + " popl %eax \n" + " pop %gs \n" + " pop %fs \n" + " pop %es \n" + " pop %ds \n" + " popal \n" + " iret \n" + " .code32 \n" + ); +} + +enum { + PCIBIOS = 0x1a, + MEMSIZE = 0x12 +}; + +int pcibios(unsigned long *pedi, unsigned long *pesi, unsigned long *pebp, + unsigned long *pesp, unsigned long *pebx, unsigned long *pedx, + unsigned long *pecx, unsigned long *peax, unsigned long *pflags); + +int handleint21(unsigned long *pedi, unsigned long *pesi, unsigned long *pebp, + unsigned long *pesp, unsigned long *pebx, unsigned long *pedx, + unsigned long *pecx, unsigned long *peax, unsigned long *pflags + ); + +extern void vga_exit(void); + +int biosint(unsigned long intnumber, + unsigned long gsfs, unsigned long dses, + unsigned long edi, unsigned long esi, + unsigned long ebp, unsigned long esp, + unsigned long ebx, unsigned long edx, + unsigned long ecx, unsigned long eax, + unsigned long cs_ip, unsigned short stackflags) +{ + unsigned long ip; + unsigned long cs; + unsigned long flags; + int ret = -1; + + ip = cs_ip & 0xffff; + cs = cs_ip >> 16; + flags = stackflags; + + printk_debug("biosint: INT# 0x%lx\n", intnumber); + printk_debug("biosint: eax 0x%lx ebx 0x%lx ecx 0x%lx edx 0x%lx\n", + eax, ebx, ecx, edx); + printk_debug("biosint: ebp 0x%lx esp 0x%lx edi 0x%lx esi 0x%lx\n", + ebp, esp, edi, esi); + printk_debug("biosint: ip 0x%x cs 0x%x flags 0x%x\n", + ip, cs, flags); + + // cases in a good compiler are just as good as your own tables.
+ switch (intnumber) { + case 0 ... 15: + // These are not BIOS service, but the CPU-generated exceptions + printk_info("biosint: Oops, exception %u\n", intnumber); + if (esp < 0x1000) { + printk_debug("Stack contents: "); + while (esp < 0x1000) { + printk_debug("0x%04x ", *(unsigned short *) esp); + esp += 2; + } + printk_debug("\n"); + } + printk_debug("biosint: Bailing out\n"); + // "longjmp" + vga_exit(); + break; + + case PCIBIOS: + ret = pcibios( &edi, &esi, &ebp, &esp, + &ebx, &edx, &ecx, &eax, &flags); + break; + case MEMSIZE: + // who cares. + eax = 64 * 1024; + ret = 0; + break; + case 0x15: + ret=handleint21( &edi, &esi, &ebp, &esp, + &ebx, &edx, &ecx, &eax, &flags); + break; + default: + printk_info("BIOSINT: Unsupport int #0x%x\n", + intnumber); + break; + } + if (ret) + flags |= 1; // carry flags + else + flags &= ~1; + stackflags = flags; + return ret; +} + + +void setup_realmode_idt(void) +{ + extern unsigned char idthandle, end_idthandle; + extern unsigned char debughandle, end_debughandle; + + int i; + struct realidt *idts = (struct realidt *) 0; + int codesize = &end_idthandle - &idthandle; + unsigned char *intbyte, *codeptr; + + // for each int, we create a customized little handler + // that just pushes %ax, puts the int # in %al, + // then calls the common interrupt handler. + // this necessitated because intel didn't know much about + // architecture when they did the 8086 (it shows) + // (hmm do they know anymore even now :-) + // obviously you can see I don't really care about memory + // efficiency. If I did I would probe back through the stack + // and get it that way. But that's really disgusting. + for (i = 0; i < 256; i++) { + idts[i].cs = 0; + codeptr = (char*) 4096 + i * codesize; + idts[i].offset = (unsigned) codeptr; + memcpy(codeptr, &idthandle, codesize); + intbyte = codeptr + 3; + *intbyte = i; + } + + // fixed entry points + + // VGA BIOSes tend to hardcode f000:f065 as the previous handler of + // int10. + // calling convention here is the same as INTs, we can reuse + // the int entry code. + codeptr = (char*) 0xff065; + memcpy(codeptr, &idthandle, codesize); + intbyte = codeptr + 3; + *intbyte = 0x42; /* int42 is the relocated int10 */ + + /* debug handler - useful to set a programmable delay between instructions if the + TF bit is set upon call to real mode */ + idts[1].cs = 0; + idts[1].offset = 16384; + memcpy(16384, &debughandle, &end_debughandle - &debughandle); + + +} + + + +enum { + CHECK = 0xb001, + FINDDEV = 0xb102, + READCONFBYTE = 0xb108, + READCONFWORD = 0xb109, + READCONFDWORD = 0xb10a, + WRITECONFBYTE = 0xb10b, + WRITECONFWORD = 0xb10c, + WRITECONFDWORD = 0xb10d +}; + +// errors go in AH. Just set these up so that word assigns +// will work. KISS. +enum { + PCIBIOS_NODEV = 0x8600, + PCIBIOS_BADREG = 0x8700 +}; + +int +pcibios(unsigned long *pedi, unsigned long *pesi, unsigned long *pebp, + unsigned long *pesp, unsigned long *pebx, unsigned long *pedx, + unsigned long *pecx, unsigned long *peax, unsigned long *pflags) +{ + unsigned long edi = *pedi; + unsigned long esi = *pesi; + unsigned long ebp = *pebp; + unsigned long esp = *pesp; + unsigned long ebx = *pebx; + unsigned long edx = *pedx; + unsigned long ecx = *pecx; + unsigned long eax = *peax; + unsigned long flags = *pflags; + unsigned short func = (unsigned short) eax; + int retval = 0; + unsigned short devid, vendorid, devfn; + short devindex; /* Use short to get rid of gabage in upper half of 32-bit register */ + unsigned char bus; + device_t dev; + + switch(func) { + case CHECK: + *pedx = 0x4350; + *pecx = 0x2049; + retval = 0; + break; + case FINDDEV: + { + devid = *pecx; + vendorid = *pedx; + devindex = *pesi; + dev = 0; + while ((dev = dev_find_device(vendorid, devid, dev))) { + if (devindex <= 0) + break; + devindex--; + } + if (dev) { + unsigned short busdevfn; + *peax = 0; + // busnum is an unsigned char; + // devfn is an int, so we mask it off. + busdevfn = (dev->bus->secondary << 8) + | (dev->path.pci.devfn & 0xff); + printk_debug("0x%x: return 0x%x\n", func, busdevfn); + *pebx = busdevfn; + retval = 0; + } else { + *peax = PCIBIOS_NODEV; + retval = -1; + } + } + break; + case READCONFDWORD: + case READCONFWORD: + case READCONFBYTE: + case WRITECONFDWORD: + case WRITECONFWORD: + case WRITECONFBYTE: + { + unsigned long dword; + unsigned short word; + unsigned char byte; + unsigned char reg; + + devfn = *pebx & 0xff; + bus = *pebx >> 8; + reg = *pedi; + dev = dev_find_slot(bus, devfn); + if (! dev) { + printk_debug("0x%x: BAD DEVICE bus %d devfn 0x%x\n", func, bus, devfn); + // idiots. the pcibios guys assumed you'd never pass a bad bus/devfn! + *peax = PCIBIOS_BADREG; + retval = -1; + } + switch(func) { + case READCONFBYTE: + byte = pci_read_config8(dev, reg); + *pecx = byte; + break; + case READCONFWORD: + word = pci_read_config16(dev, reg); + *pecx = word; + break; + case READCONFDWORD: + dword = pci_read_config32(dev, reg); + *pecx = dword; + break; + case WRITECONFBYTE: + byte = *pecx; + pci_write_config8(dev, reg, byte); + break; + case WRITECONFWORD: + word = *pecx; + pci_write_config16(dev, reg, word); + break; + case WRITECONFDWORD: + dword = *pecx; + pci_write_config32(dev, reg, dword); + break; + } + + if (retval) + retval = PCIBIOS_BADREG; + printk_debug("0x%x: bus %d devfn 0x%x reg 0x%x val 0x%lx\n", + func, bus, devfn, reg, *pecx); + *peax = 0; + retval = 0; + } + break; + default: + printk_err("UNSUPPORTED PCIBIOS FUNCTION 0x%x\n", func); + break; + } + + return retval; +} + +int handleint21(unsigned long *edi, unsigned long *esi, unsigned long *ebp, + unsigned long *esp, unsigned long *ebx, unsigned long *edx, + unsigned long *ecx, unsigned long *eax, unsigned long *flags) +{ + int res=-1; + switch(*eax&0xffff) + { + case 0x5f19: + break; + case 0x5f18: + *eax=0x5f; + *ebx=0x545; // MCLK = 133, 32M frame buffer, 256 M main memory + *ecx=0x060; + res=0; + break; + case 0x5f00: + *eax = 0x8600; + break; + case 0x5f01: + *eax = 0x5f; + *ecx = (*ecx & 0xffffff00 ) | 2; // panel type = 2 = 1024 * 768 + res = 0; + break; + case 0x5f02: + *eax=0x5f; + *ebx= (*ebx & 0xffff0000) | 2; + *ecx= (*ecx & 0xffff0000) | 0x401; // PAL + crt only + *edx= (*edx & 0xffff0000) | 0; // TV Layout - default + res=0; + break; + case 0x5f0f: + *eax=0x860f; + break; + } + return res; +} Index: src/mainboard/via/epia-n/dsdt.asl =================================================================== --- src/mainboard/via/epia-n/dsdt.asl (revision 0) +++ src/mainboard/via/epia-n/dsdt.asl (revision 0) @@ -0,0 +1,257 @@ +/* + * Minimalist ACPI DSDT table for EPIA-M / MII + * (C) Copyright 2004 Nick Barker Nick.Barker9@btinternet.com + * + * + */ + +DefinitionBlock ("DSDT.aml", "DSDT", 1, "LXBIOS", "LXB-DSDT", 1) +{ + /* + * Define the main processor + */ + Scope (_PR) + { + Processor (_PR.CPU0, 0x00, 0x00000410, 0x06) {} + } + + /* For now only define 2 power states: + * - S0 which is fully on + * - S5 which is soft off + * any others would involve declaring the wake up methods + */ + Name (_S0, Package () {0x00, 0x00, 0x00, 0x00 }) + Name (_S5, Package () {0x02, 0x02, 0x00, 0x00 }) + + /* Root of the bus hierarchy */ + Scope (_SB) + { + /* Define how interrupt Link A is plumbed in */ + Device (LNKA) + { + Name (_HID, EisaId ("PNP0C0F")) + Name (_UID, 0x01) + /* Status - always return ready */ + Method (_STA, 0, NotSerialized) + { + Return (0x0B) + } + /* Current Resources - return irq set up in BIOS */ + Method (_CRS, 0, NotSerialized) + { + Name (BUFF, ResourceTemplate () + { + IRQ (Level, ActiveLow, Shared) {5} + }) + Return (BUFF) + } + /* Possible Resources - return the range of irqs + * we are using for PCI - only here to keep Linux ACPI + * happy + */ + Method (_PRS, 0, NotSerialized) + { + Name (BUFF, ResourceTemplate () + { + IRQ (Level, ActiveLow, Shared) {5,9,10} + }) + Return (BUFF) + } + /* Set Resources - dummy function to keep Linux ACPI happy + * Linux is more than happy not to tinker with irq + * assignments as long as the CRS and STA functions + * return good values + */ + Method (_SRS, 1, NotSerialized ) {} + /* Disable - dummy function to keep Linux ACPI happy */ + Method (_DIS, 0, NotSerialized ) {} + + } // End of LNKA + + /* Define how interrupt Link B is plumbed in */ + Device (LNKB) + { + Name (_HID, EisaId ("PNP0C0F")) + Name (_UID, 0x02) + /* Status - always return ready */ + Method (_STA, 0, NotSerialized) + { + Return (0x0B) + } + /* Current Resources - return irq set up in BIOS */ + Method (_CRS, 0, NotSerialized) + { + Name (BUFF, ResourceTemplate () + { + IRQ (Level, ActiveLow, Shared) {9} + }) + Return (BUFF) + } + /* Possible Resources - return the range of irqs + * we are using for PCI - only here to keep Linux ACPI + * happy + */ + Method (_PRS, 0, NotSerialized) + { + Name (BUFF, ResourceTemplate () + { + IRQ (Level, ActiveLow, Shared) {5,9,10} + }) + Return (BUFF) + } + /* Set Resources - dummy function to keep Linux ACPI happy + * Linux is more than happy not to tinker with irq + * assignments as long as the CRS and STA functions + * return good values + */ + Method (_SRS, 1, NotSerialized ) {} + /* Disable - dummy function to keep Linux ACPI happy */ + Method (_DIS, 0, NotSerialized ) {} + + } // End of LNKB + + /* Define how interrupt Link C is plumbed in */ + Device (LNKC) + { + Name (_HID, EisaId ("PNP0C0F")) + Name (_UID, 0x03) + /* Status - always return ready */ + Method (_STA, 0, NotSerialized) + { + Return (0x0B) + } + /* Current Resources - return irq set up in BIOS */ + Method (_CRS, 0, NotSerialized) + { + Name (BUFF, ResourceTemplate () + { + IRQ (Level, ActiveLow, Shared) {9} + }) + Return (BUFF) + } + /* Possible Resources - return the range of irqs + * we are using for PCI - only here to keep Linux ACPI + * happy + */ + Method (_PRS, 0, NotSerialized) + { + Name (BUFF, ResourceTemplate () + { + IRQ (Level, ActiveLow, Shared) {5,9,10} + }) + Return (BUFF) + } + /* Set Resources - dummy function to keep Linux ACPI happy + * Linux is more than happy not to tinker with irq + * assignments as long as the CRS and STA functions + * return good values + */ + Method (_SRS, 1, NotSerialized ) {} + /* Disable - dummy function to keep Linux ACPI happy */ + Method (_DIS, 0, NotSerialized ) {} + + } // End of LNKC + + /* Define how interrupt Link D is plumbed in */ + Device (LNKD) + { + Name (_HID, EisaId ("PNP0C0F")) + Name (_UID, 0x04) + /* Status - always return ready */ + Method (_STA, 0, NotSerialized) + { + Return (0x0B) + } + /* Current Resources - return irq set up in BIOS */ + Method (_CRS, 0, NotSerialized) + { + Name (BUFF, ResourceTemplate () + { + IRQ (Level, ActiveLow, Shared) {5} + }) + Return (BUFF) + } + /* Possible Resources - return the range of irqs + * we are using for PCI - only here to keep Linux ACPI + * happy + */ + Method (_PRS, 0, NotSerialized) + { + Name (BUFF, ResourceTemplate () + { + IRQ (Level, ActiveLow, Shared) {5,9,10} + }) + Return (BUFF) + } + /* Set Resources - dummy function to keep Linux ACPI happy + * Linux is more than happy not to tinker with irq + * assignments as long as the CRS and STA functions + * return good values + */ + Method (_SRS, 1, NotSerialized ) {} + /* Disable - dummy function to keep Linux ACPI happy */ + Method (_DIS, 0, NotSerialized ) {} + + } // End of LNKD + + + /* top PCI device */ + Device (PCI0) + { + Name (_HID, EisaId ("PNP0A03")) + Name (_ADR, 0x00) + Name (_UID, 0x00) + Name (_BBN, 0x00) + + /* PCI Routing Table */ + Name (_PRT, Package () { + /* Epia-MII 6000e cardbus: */ + Package () {0x000AFFFF, 0x00, LNKA, 0x00}, // Cardbus Link A + Package () {0x000AFFFF, 0x01, LNKB, 0x00}, // Cardbus Link B + Package () {0x000AFFFF, 0x02, LNKC, 0x00}, // Cardbus Link C + Package () {0x000AFFFF, 0x03, LNKD, 0x00}, // Cardbus Link D + + Package () {0x000DFFFF, 0x00, LNKB, 0x00}, // Firewire Link B + Package () {0x000DFFFF, 0x01, LNKC, 0x00}, // Firewire Link C + Package () {0x000DFFFF, 0x02, LNKD, 0x00}, // Firewire Linc D + Package () {0x000DFFFF, 0x03, LNKA, 0x00}, // Firewire Link A + + Package () {0x0010FFFF, 0x00, LNKA, 0x00}, // USB Link A + Package () {0x0010FFFF, 0x01, LNKB, 0x00}, // USB Link B + Package () {0x0010FFFF, 0x02, LNKC, 0x00}, // USB Link C + Package () {0x0010FFFF, 0x03, LNKD, 0x00}, // USB Link D + + Package () {0x0011FFFF, 0x00, LNKA, 0x00}, // vt8623 Link A + Package () {0x0011FFFF, 0x01, LNKB, 0x00}, // vt8623 Link B + Package () {0x0011FFFF, 0x02, LNKC, 0x00}, // vt8623 Link C + Package () {0x0011FFFF, 0x03, LNKD, 0x00}, // vt8623 Link D + + Package () {0x0012FFFF, 0x00, LNKA, 0x00}, // LAN Link A + Package () {0x0012FFFF, 0x01, LNKB, 0x00}, // LAN Link B + Package () {0x0012FFFF, 0x02, LNKC, 0x00}, // LAN Link C + Package () {0x0012FFFF, 0x03, LNKD, 0x00}, // LAN Link D + + Package () {0x0013FFFF, 0x00, LNKA, 0x00}, // Riser slot LinkA + Package () {0x0013FFFF, 0x01, LNKB, 0x00}, // Riser slot LinkB + Package () {0x0013FFFF, 0x02, LNKC, 0x00}, // Riser slot LinkC + Package () {0x0013FFFF, 0x03, LNKD, 0x00}, // Riser slot LinkD + + Package () {0x0014FFFF, 0x00, LNKB, 0x00}, // Slot 1, Link B + Package () {0x0014FFFF, 0x01, LNKC, 0x00}, // Slot 1, Link C + Package () {0x0014FFFF, 0x02, LNKD, 0x00}, // Slot 1, Link D + Package () {0x0014FFFF, 0x03, LNKA, 0x00}, // Slot 1, Link A + + Package () {0x0001FFFF, 0x00, LNKA, 0x00}, // VGA Link A + Package () {0x0001FFFF, 0x01, LNKB, 0x00}, // VGA Link B + Package () {0x0001FFFF, 0x02, LNKC, 0x00}, // VGA Link C + Package () {0x0001FFFF, 0x03, LNKD, 0x00} // VGA Link D + + }) + + + } // End of PCI0 + + } // End of _SB + +} // End of Definition Block + Index: src/mainboard/via/epia-n/cmos.layout =================================================================== --- src/mainboard/via/epia-n/cmos.layout (revision 0) +++ src/mainboard/via/epia-n/cmos.layout (revision 0) @@ -0,0 +1,74 @@ +entries + +#start-bit length config config-ID name +#0 8 r 0 seconds +#8 8 r 0 alarm_seconds +#16 8 r 0 minutes +#24 8 r 0 alarm_minutes +#32 8 r 0 hours +#40 8 r 0 alarm_hours +#48 8 r 0 day_of_week +#56 8 r 0 day_of_month +#64 8 r 0 month +#72 8 r 0 year +#80 4 r 0 rate_select +#84 3 r 0 REF_Clock +#87 1 r 0 UIP +#88 1 r 0 auto_switch_DST +#89 1 r 0 24_hour_mode +#90 1 r 0 binary_values_enable +#91 1 r 0 square-wave_out_enable +#92 1 r 0 update_finished_enable +#93 1 r 0 alarm_interrupt_enable +#94 1 r 0 periodic_interrupt_enable +#95 1 r 0 disable_clock_updates +#96 288 r 0 temporary_filler +0 384 r 0 reserved_memory +384 1 e 4 boot_option +385 1 e 4 last_boot +386 1 e 1 ECC_memory +388 4 r 0 reboot_bits +392 3 e 5 baud_rate +400 1 e 1 power_on_after_fail +412 4 e 6 debug_level +416 4 e 7 boot_first +420 4 e 7 boot_second +424 4 e 7 boot_third +428 4 h 0 boot_index +432 8 h 0 boot_countdown +1008 16 h 0 check_sum + +enumerations + +#ID value text +1 0 Disable +1 1 Enable +2 0 Enable +2 1 Disable +4 0 Fallback +4 1 Normal +5 0 115200 +5 1 57600 +5 2 38400 +5 3 19200 +5 4 9600 +5 5 4800 +5 6 2400 +5 7 1200 +6 6 Notice +6 7 Info +6 8 Debug +6 9 Spew +7 0 Network +7 1 HDD +7 2 Floppy +7 8 Fallback_Network +7 9 Fallback_HDD +7 10 Fallback_Floppy +#7 3 ROM + +checksums + +checksum 392 1007 1008 + + Index: src/mainboard/via/epia-n/mainboard.c =================================================================== --- src/mainboard/via/epia-n/mainboard.c (revision 0) +++ src/mainboard/via/epia-n/mainboard.c (revision 0) @@ -0,0 +1,27 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2008 VIA Technologies, Inc. + * (Written by Aaron Lwe aaron.lwe@gmail.com for VIA) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <device/device.h> +#include "chip.h" + +struct chip_operations mainboard_ops = { + CHIP_NAME("VIA EPIA-N Mainboard") +}; Index: src/northbridge/via/cn400/Config.lb =================================================================== --- src/northbridge/via/cn400/Config.lb (revision 0) +++ src/northbridge/via/cn400/Config.lb (revision 0) @@ -0,0 +1,9 @@ +uses HAVE_HIGH_TABLES + +config chip.h + +driver northbridge.o +driver agp.o +driver vga.o + +default HAVE_HIGH_TABLES=1 Index: src/northbridge/via/cn400/raminit.c =================================================================== --- src/northbridge/via/cn400/raminit.c (revision 0) +++ src/northbridge/via/cn400/raminit.c (revision 0) @@ -0,0 +1,827 @@ +/* + * (C) Copyright 2005 Nick Barker nick.barker9@btinternet.com + * + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, + * MA 02110-1301 USA + */ + +/* + Automatically detect and set up ddr dram on the CLE266 chipset. + Assumes DDR memory, though chipset also supports SDRAM + Assumes at least 266Mhz memory as no attempt is made to clock + the chipset down if slower memory is installed. + So far tested on: + 256 Mb 266Mhz 1 Bank (i.e. single sided) + 256 Mb 266Mhz 2 Bank (i.e. double sided) + 512 Mb 266Mhz 2 Bank (i.e. double sided) +*/ +/* ported and enhanced from assembler level code in coreboot v1 */ + +#include <spd.h> +#include <sdram_mode.h> +#include <delay.h> +#include <cpu/x86/mtrr.h> +#include "cn400.h" + +static void dimm_read(unsigned long bank,unsigned long x) +{ + //unsigned long eax; + volatile unsigned long y; + //eax = x; + y = * (volatile unsigned long *) (x+ bank) ; + +} + + +static void print_val(char *str, int val) +{ + print_debug(str); + print_debug_hex8(val); +} + +/** + * Configure the bus between the CPU and the northbridge. This might be able to + * be moved to post-ram code in the future. For the most part, these registers + * should not be messed around with. These are too complex to explain short of + * copying the datasheets into the comments, but most of these values are from + * the BIOS Porting Guide, so they should work on any board. If they don't, + * try the values from your factory BIOS. + * + * TODO: Changing the DRAM frequency doesn't work (hard lockup). + * + * @param dev The northbridge's CPU Host Interface (D0F2). + */ +static void c3_cpu_setup(device_t dev) +{ + /* Host bus interface registers (D0F2 0x50-0x67) */ + /* Taken from CN700 and updated from running CN400 */ + + /* Host Bus I/O Circuit (see datasheet) */ + /* Host Address Pullup/down Driving */ + pci_write_config8(dev, 0x70, 0x33); + pci_write_config8(dev, 0x71, 0x44); + pci_write_config8(dev, 0x72, 0x33); + pci_write_config8(dev, 0x73, 0x44); + + /* Output Delay Stagger Control */ + pci_write_config8(dev, 0x74, 0x70); + + /* AGTL+ I/O Circuit */ + pci_write_config8(dev, 0x75, 0x08); + + /* AGTL+ Compensation Status */ + pci_write_config8(dev, 0x76, 0x74); + + /* AGTL+ Auto Compensation Offest */ + pci_write_config8(dev, 0x77, 0x00); + + /* Request phase control */ + pci_write_config8(dev, 0x50, 0xA8); + + /* Line DRDY# Timing Control */ + pci_write_config8(dev, 0x60, 0x00); + pci_write_config8(dev, 0x61, 0x00); + pci_write_config8(dev, 0x62, 0x00); + + /* QW DRDY# Timing Control */ + pci_write_config8(dev, 0x63, 0x00); + pci_write_config8(dev, 0x64, 0x00); + pci_write_config8(dev, 0x65, 0x00); + + /* Read Line Burst DRDY# Timing Control */ + pci_write_config8(dev, 0x66, 0x00); + pci_write_config8(dev, 0x67, 0x00); + + /* CPU Interface Control */ + pci_write_config8(dev, 0x51, 0xFE); + pci_write_config8(dev, 0x52, 0xEF); + + /* Arbitration */ + pci_write_config8(dev, 0x53, 0x88); + + /* Write Policy & Reorder Latecy */ + pci_write_config8(dev, 0x56, 0x00); + + /* Delivery-Trigger Control */ + pci_write_config8(dev, 0x58, 0x00); + + /* IPI Control */ + pci_write_config8(dev, 0x59, 0x30); + + /* CPU Misc Control */ + pci_write_config8(dev, 0x5C, 0x00); + + /* Write Policy */ + pci_write_config8(dev, 0x5d, 0xb2); + + /* Bandwidth Timer */ + pci_write_config8(dev, 0x5e, 0x88); + + /* CPU Miscellaneous Control */ + pci_write_config8(dev, 0x5f, 0xc7); + + /* CPU Miscellaneous Control */ + pci_write_config8(dev, 0x55, 0x28); + +} + +static void ddr_ram_setup(void) +{ + //device_t north; + uint8_t b, c, bank, ma; + uint16_t i; + unsigned long bank_address; + + + print_debug("CN400 RAM init starting\r\n"); + + //north = pci_locate_device(PCI_ID(0x1106, 0x7259), 0); + pci_write_config8(ctrl.d0f7, 0x75, 0x08); + + + /* No Interleaving or Multi Page */ + //north = pci_locate_device(PCI_ID(0x1106, 0x3259), 0); + pci_write_config8(ctrl.d0f3, 0x69, 0x00); + pci_write_config8(ctrl.d0f3, 0x6b, 0x10); + +/* + DRAM MA Map Type Device 0 Fn3 Offset 50-51 + + Determine memory addressing based on the module's memory technology and + arrangement. See Table 4-9 of Intel's 82443GX datasheet for details. + + Bank 1/0 MA map type 50[7-5] + Bank 1/0 command rate 50[4] + Bank 3/2 MA map type 50[3-1] + Bank 3/2 command rate 50[0] + + + Read SPD byte 17, Number of banks on SDRAM device. +*/ + c = 0; + b = smbus_read_byte(0x50, SPD_NUM_BANKS_PER_SDRAM); + //print_val("Detecting Memory\r\nNumber of Banks ",b); + + // Only supporting 4 bank chips just now + if( b == 4 ){ + /* + Read SPD byte 3, Number of row addresses. + */ + c = 0; + bank = 0x40; + b = smbus_read_byte(0x50, SPD_NUM_ROWS); + //print_val("\r\nNumber of Rows ", b); + + if( b >= 0x0d ){ // 256/512Mb + + if (b == 0x0e) + bank = 0x48; + else + bank = 0x44; + + /* + Read SPD byte 13, Primary DRAM width. + */ + b = smbus_read_byte(0x50, SPD_PRIMARY_SDRAM_WIDTH); + //print_val("\r\nPrimary DRAM width", b); + if( b != 4 ) // not 64/128Mb (x4) + c = 0x80; // 256Mb + } + + /* + Read SPD byte 4, Number of column addresses. + */ + b = smbus_read_byte(0x50, SPD_NUM_COLUMNS); + //print_val("\r\nNo Columns ",b); + if( b == 10 || b == 11 || b == 12) c |= 0x60; // 10/11 bit col addr + if( b == 9 ) c |= 0x40; // 9 bit col addr + if( b == 8 ) c |= 0x20; // 8 bit col addr + + //print_val("\r\nMA type ", c); + pci_write_config8(ctrl.d0f3, 0x50, c); + + } +/* else + { + die("DRAM module size is not supported by CN400\r\n"); + } +*/ + +/* + DRAM bank size. See 4.3.1 pg 35 + + 5a->5d set to end address for each bank. 1 bit == 32MB + 5a = bank 0 + 5b = bank 0 + b1 + 5c = bank 0 + b1 + b2 + 5d = bank 0 + b1 + b2 + b3 +*/ + + // Read SPD byte 31 Module bank density + //c = 0; + b = smbus_read_byte(0x50, SPD_DENSITY_OF_EACH_ROW_ON_MODULE); + if( b & 0x02 ) + { + c = 0x40; // 2GB + bank |= 0x02; + } + else if( b & 0x01) + { + c = 0x20; // 1GB + if (bank == 0x48) bank |= 0x01; + else bank |= 0x03; + } + else if( b & 0x80) + { + c = 0x10; // 512MB + if (bank == 0x44) bank |= 0x02; + } + else if( b & 0x40) + { + c = 0x08; // 256MB + if (bank == 0x44) bank |= 0x01; + else bank |= 0x03; + } + else if( b & 0x20) + { + c = 0x04; // 128MB + if (bank == 0x40) bank |= 0x02; + } + else if( b & 0x10) + { + c = 0x02; // 64MB + bank |= 0x01; + } + else if( b & 0x08) c = 0x01; // 32MB + else c = 0x01; // Error, use default + + //print_val("\r\nBank 0 (*32 Mb) ",c); + + // set bank zero size + pci_write_config8(ctrl.d0f3, 0x40, c); + + // SPD byte 5 # of physical banks + b = smbus_read_byte(0x50, SPD_NUM_DIMM_BANKS); + + //print_val("\r\nNo Physical Banks ",b); + if( b == 2) + { + c <<=1; + bank |= 0x80; + //print_val("\r\nTotal Memory (*32 Mb) ",c); + } +/* else + { + die("Only a single DIMM is supported by EPIA-N(L)\r\n");
+ } +*/ + // set banks 1,2,3... + pci_write_config8(ctrl.d0f3, 0x41,c); + pci_write_config8(ctrl.d0f3, 0x42,c); + pci_write_config8(ctrl.d0f3, 0x43,c); + pci_write_config8(ctrl.d0f3, 0x44,c); + pci_write_config8(ctrl.d0f3, 0x45,c); + pci_write_config8(ctrl.d0f3, 0x46,c); + pci_write_config8(ctrl.d0f3, 0x47,c); + + ma = bank; + + /* Read SPD byte 18 CAS Latency */ + b = smbus_read_byte(0x50, SPD_ACCEPTABLE_CAS_LATENCIES); +/* print_debug("\r\nCAS Supported "); + if(b & 0x04) + print_debug("2 "); + if(b & 0x08) + print_debug("2.5 "); + if(b & 0x10) + print_debug("3"); + + c = smbus_read_byte(0x50, SPD_MIN_CYCLE_TIME_AT_CAS_MAX); + print_val("\r\nCycle time at CL X (nS)", c); + c = smbus_read_byte(0x50, SPD_SDRAM_CYCLE_TIME_2ND); + print_val("\r\nCycle time at CL X-0.5 (nS)", c); + c = smbus_read_byte(0x50, SPD_SDRAM_CYCLE_TIME_3RD); + print_val("\r\nCycle time at CL X-1 (nS)", c); +*/ + bank = smbus_read_byte(0x50, SPD_MIN_CYCLE_TIME_AT_CAS_MAX); + + /* Setup DRAM Cycle Time */ + if ( bank <= 0x50 ) bank = 0x14; + else if (bank <= 0x60) bank = 0x18; + else bank = 0x1E; + + if( b & 0x10 ){ // DDR offering optional CAS 3 + //print_debug("\r\nStarting at CAS 3"); + c = 0x30; + /* see if we can better it */ + if( b & 0x08 ){ // DDR mandatory CAS 2.5 + if( smbus_read_byte(0x50, SPD_SDRAM_CYCLE_TIME_2ND) <= bank ){ // we can manage max MHz at CAS 2.5 + //print_debug("\r\nWe can do CAS 2.5"); + c = 0x20; + } + } + if( b & 0x04 ){ // DDR mandatory CAS 2 + if( smbus_read_byte(0x50, SPD_SDRAM_CYCLE_TIME_3RD) <= bank ){ // we can manage max Mhz at CAS 2 + //print_debug("\r\nWe can do CAS 2"); + c = 0x10; + } + } + }else{ // no optional CAS values just 2 & 2.5 + //print_debug("\r\nStarting at CAS 2.5"); + c = 0x20; // assume CAS 2.5 + if( b & 0x04){ // Should always happen + if( smbus_read_byte(0x50, SPD_SDRAM_CYCLE_TIME_2ND) <= bank){ // we can manage max Mhz at CAS 2 + //print_debug("\r\nWe can do CAS 2"); + c = 0x10; + } + } + } + +/* + DRAM Timing Device 0 Fn 3 Offset 56 + + RAS Pulse width 56[7,6] + CAS Latency 56[5,4] + Row pre-charge 56[1,0] + + SDR DDR + 00 1T - + 01 2T 2T + 10 3T 2.5T + 11 - 3T + + RAS/CAS delay 56[3,2] + + Determine row pre-charge time (tRP) + + + Read SPD byte 27, min row pre-charge time. +*/ + + b = smbus_read_byte(0x50, SPD_MIN_ROW_PRECHARGE_TIME); + + //print_val("\r\ntRP ",b); + if ( b >= (5 * bank)) { + c |= 0x03; // set tRP = 5T + } + else if ( b >= (4 * bank)) { + c |= 0x02; // set tRP = 4T + } + else if ( b >= (3 * bank)) { + c |= 0x01; // set tRP = 3T + } + +/* + Determine RAS to CAS delay (tRCD) + + Read SPD byte 29, min row pre-charge time. +*/ + + b = smbus_read_byte(0x50, SPD_MIN_RAS_TO_CAS_DELAY); + //print_val("\r\ntRCD ",b); + + if ( b >= (5 * bank)) c |= 0x0C; // set tRCD = 5T + else if ( b >= (4 * bank)) c |= 0x08; // set tRCD = 4T + else if ( b >= (3 * bank)) c |= 0x04; // set tRCD = 3T + +/* + Determine RAS pulse width (tRAS) + + + Read SPD byte 30, device min active to pre-charge time. +*/ + + b = smbus_read_byte(0x50, SPD_MIN_ACTIVE_TO_PRECHARGE_DELAY); + //print_val("\r\ntRAS ",b); + if ( b >= (9 * bank)) c |= 0xC0; // set tRAS = 9T + else if ( b >= (8 * bank)) c |= 0x80; // set tRAS = 8T + else if ( b >= (7 * bank)) c |= 0x40; // set tRAS = 7T + + /* Write DRAM Timing All Banks I */ + pci_write_config8(ctrl.d0f3, 0x56, c); + + /* TWrite DRAM Timing All Banks II */ + pci_write_config8(ctrl.d0f3, 0x57, 0x1a); + + /* Enable DIMM Ranks */ + //pci_write_config8(ctrl.d0f3, 0x48, ma); + //udelay(200); + + + /* DRAM arbitration timer */ + pci_write_config8(ctrl.d0f3, 0x65, 0x99); + +/* + CPU Frequency Device 0 Function 2 Offset 54 + + CPU FSB Operating Frequency (bits 7:5) + 000 : 100MHz 001 : 133MHz + 010 : 200MHz + 011->111 : Reserved + + SDRAM BL8 (4) +*/ + pci_write_config8(ctrl.d0f3, 0x54, 0x38); + +/* + DRAM Clock Device 0 Fn 3 Offset 68 +*/ + bank = smbus_read_byte(0x50, SPD_MIN_CYCLE_TIME_AT_CAS_MAX); + + /* Setup DRAM Cycle Time */ + if ( bank <= 0x50 ) + { + /* DRAM DDR Control Alert! Alert! See also c3_cpu_setup */ + /* This sets to 133MHz FSB / DDR400. */ + pci_write_config8(ctrl.d0f3, 0x68, 0x85); + } + else if (bank <= 0x60) + { + /* DRAM DDR Control Alert! Alert! This hardwires to */ + /* 133MHz FSB / DDR333. See also c3_cpu_setup */ + pci_write_config8(ctrl.d0f3, 0x68, 0x81); + } + else + { + /* DRAM DDR Control Alert! Alert! This hardwires to */ + /* 133MHz FSB / DDR266. See also c3_cpu_setup */ + pci_write_config8(ctrl.d0f3, 0x68, 0x80); + } + + /* Delay >= 100ns after DRAM Frequency adjust, See 4.1.1.3 pg 15 */ + udelay(200); + +/* + Determine bank interleave + + Read SPD byte 17, Number of banks on SDRAM device. +*/ + c = 0x0F; + b = smbus_read_byte(0x50, SPD_NUM_BANKS_PER_SDRAM); + if( b == 4) c |= 0x80; + else if (b == 2) c |= 0x40; + + /* 4-Way Interleave With Multi-Paging (From Running System)*/ + pci_write_config8(ctrl.d0f3, 0x69, c); + + /* DRAM Arbitration Control */ + pci_write_config8(ctrl.d0f3, 0x66, 0x82); + + /* DRAM Control */ + pci_write_config8(ctrl.d0f3, 0x6e, 0x00); + + /* Disable refresh for now */ + pci_write_config8(ctrl.d0f3, 0x6a, 0x00); + + + + /* DRAM Clock Control */ + pci_write_config8(ctrl.d0f3, 0x6c, 0x00); + + /* DRAM Bus Turn-Around Setting */ + pci_write_config8(ctrl.d0f3, 0x60, 0x01); + + /* Disable DRAM refresh */ + pci_write_config8(ctrl.d0f3,0x6a,0x0); + + + /* Memory Pads Driving and Range Select */ + pci_write_config8(ctrl.d0f3, 0xe2, 0xAA); + pci_write_config8(ctrl.d0f3, 0xe3, 0x00); + pci_write_config8(ctrl.d0f3, 0xe4, 0x99); + + /* DRAM signal timing control */ + pci_write_config8(ctrl.d0f3, 0x74, 0x99); + pci_write_config8(ctrl.d0f3, 0x76, 0x09); + + pci_write_config8(ctrl.d0f3, 0xe0, 0xAA); + pci_write_config8(ctrl.d0f3, 0xe1, 0x00); + pci_write_config8(ctrl.d0f3, 0xe6, 0x00); + pci_write_config8(ctrl.d0f3, 0xe8, 0xEE); + pci_write_config8(ctrl.d0f3, 0xea, 0xEE); + + + /* SPD byte 5 # of physical banks */ + b = smbus_read_byte(0x50, SPD_NUM_DIMM_BANKS) -1; + c = b | 0x40; + + pci_write_config8(ctrl.d0f3, 0xb0, c); + + /* Enable DIMM Ranks */ + pci_write_config8(ctrl.d0f3, 0x48, ma); + udelay(200); + + + for( bank = 0 , bank_address=0; bank <= b ; bank++) { +/* + DDR init described in Via VT8623 BIOS Porting Guide. Pg 28 (4.2.3.1) +*/ + + /* NOP command enable */ + c = pci_read_config8(ctrl.d0f3, DRAM_MISC_CTL); + c &= 0xf8; /* Clear bits 2-0. */ + c |= RAM_COMMAND_NOP; + pci_write_config8(ctrl.d0f3, DRAM_MISC_CTL, c); + + /* read a double word from any address of the dimm */ + dimm_read(bank_address,0x1f000); + //udelay(200); + + /* All bank precharge Command Enable */ + c = pci_read_config8(ctrl.d0f3, DRAM_MISC_CTL); + c &= 0xf8; /* Clear bits 2-0. */ + c |= RAM_COMMAND_PRECHARGE; + pci_write_config8(ctrl.d0f3, DRAM_MISC_CTL, c); + dimm_read(bank_address,0x1f000); + + + /* MSR Enable Low DIMM*/ + c = pci_read_config8(ctrl.d0f3, DRAM_MISC_CTL); + c &= 0xf8; /* Clear bits 2-0. */ + c |= RAM_COMMAND_MSR_LOW; + pci_write_config8(ctrl.d0f3, DRAM_MISC_CTL, c); + dimm_read(bank_address,0x2000); + udelay(1); + dimm_read(bank_address,0x800); + udelay(1); + + /* All banks precharge Command Enable */ + c = pci_read_config8(ctrl.d0f3, DRAM_MISC_CTL); + c &= 0xf8; /* Clear bits 2-0. */ + c |= RAM_COMMAND_PRECHARGE; + pci_write_config8(ctrl.d0f3, DRAM_MISC_CTL, c); + dimm_read(bank_address,0x1f200); + + /* CBR Cycle Enable */ + c = pci_read_config8(ctrl.d0f3, DRAM_MISC_CTL); + c &= 0xf8; /* Clear bits 2-0. */ + c |= RAM_COMMAND_CBR; + pci_write_config8(ctrl.d0f3, DRAM_MISC_CTL, c); + + /* Read 8 times */ + dimm_read(bank_address,0x1f300); + udelay(100); + dimm_read(bank_address,0x1f400); + udelay(100); + dimm_read(bank_address,0x1f500); + udelay(100); + dimm_read(bank_address,0x1f600); + udelay(100); + dimm_read(bank_address,0x1f700); + udelay(100); + dimm_read(bank_address,0x1f800); + udelay(100); + dimm_read(bank_address,0x1f900); + udelay(100); + dimm_read(bank_address,0x1fa00); + udelay(100); + + /* MSR Enable */ + c = pci_read_config8(ctrl.d0f3, DRAM_MISC_CTL); + c &= 0xf8; /* Clear bits 2-0. */ + c |= RAM_COMMAND_MSR_LOW; + pci_write_config8(ctrl.d0f3, DRAM_MISC_CTL, c); + +/* + Mode Register Definition + with adjustement so that address calculation is correct - 64 bit technology, therefore + a0-a2 refer to byte within a 64 bit long word, and a3 is the first address line presented + to DIMM as a row or column address. + + MR[9-7] CAS Latency + MR[6] Burst Type 0 = sequential, 1 = interleaved + MR[5-3] burst length 001 = 2, 010 = 4, 011 = 8, others reserved + MR[0-2] dont care + + CAS Latency + 000 reserved + 001 reserved + 010 2 + 011 3 + 100 reserved + 101 1.5 + 110 2.5 + 111 reserved + + CAS 2 0101011000 = 0x158 + CAS 2.5 1101011000 = 0x358 + CAS 3 0111011000 = 0x1d8 + +*/ + c = pci_read_config8(ctrl.d0f3, 0x56); + if( (c & 0x30) == 0x10 ) + dimm_read(bank_address,0x150); + else if((c & 0x30) == 0x20 ) + dimm_read(bank_address,0x350); + else + dimm_read(bank_address,0x1d0); + + //dimm_read(bank_address,0x350); + + /* Normal SDRAM Mode */ + c = pci_read_config8(ctrl.d0f3, DRAM_MISC_CTL); + c &= 0xf8; /* Clear bits 2-0. */ + c |= RAM_COMMAND_NORMAL; + pci_write_config8(ctrl.d0f3, DRAM_MISC_CTL, c); + + bank_address = pci_read_config8(ctrl.d0f3,0x40+bank) * 0x2000000; + } // end of for each bank + + /* DQS Input Adjust */ + //c = pci_read_config8(ctrl.d0f3, 0x6b); + //c |= 0x80; + //pci_write_config8(ctrl.d0f3, 0x6b, c); + + /* Set DQS A/B Input delay to defaults */ + pci_write_config8(ctrl.d0f3, 0x7A, 0xA1); + pci_write_config8(ctrl.d0f3, 0x7B, 0x62); + pci_write_config8(ctrl.d0f3, 0x72, 0x29); + pci_write_config8(ctrl.d0f3, 0x73, 0x99); + + //c = pci_read_config8(ctrl.d0f3, 0x6b); + //c &= 0x7F; + //pci_write_config8(ctrl.d0f3, 0x6b, c); + + + /* DQS Output Adjust (data strobe output delay). */ + //c = pci_read_config8(ctrl.d0f3, 0x6b); + //c |= 0x40; + //pci_write_config8(ctrl.d0f3, 0x6b, c); + + /* SPD byte 5 # of physical banks */ + b = smbus_read_byte(0x50, SPD_NUM_DIMM_BANKS) -1; + + /* determine low bond */ + if( b == 2) + bank_address = pci_read_config8(ctrl.d0f3,0x40) * 0x2000000; + else + bank_address = 0; + + for(i = 0x50 ; i < 0x0ff; i++){ + //c = i ^ (i>>1); // convert to gray code + pci_write_config8(ctrl.d0f3,0x70,i); + // clear + *(volatile unsigned long*)(0x4000) = 0; + *(volatile unsigned long*)(0x4100+bank_address) = 0; + *(volatile unsigned long*)(0x4200) = 0; + *(volatile unsigned long*)(0x4300+bank_address) = 0; + *(volatile unsigned long*)(0x4400) = 0; + *(volatile unsigned long*)(0x4500+bank_address) = 0; + + + // fill + *(volatile unsigned long*)(0x4000) = 0x12345678; + *(volatile unsigned long*)(0x4100+bank_address) = 0x81234567; + *(volatile unsigned long*)(0x4200) = 0x78123456; + *(volatile unsigned long*)(0x4300+bank_address) = 0x67812345; + *(volatile unsigned long*)(0x4400) = 0x56781234; + *(volatile unsigned long*)(0x4500+bank_address) = 0x45678123; + + // verify + if( *(volatile unsigned long*)(0x4000) != 0x12345678) + continue; + + if( *(volatile unsigned long*)(0x4100+bank_address) != 0x81234567) + continue; + + if( *(volatile unsigned long*)(0x4200) != 0x78123456) + continue; + + if( *(volatile unsigned long*)(0x4300+bank_address) != 0x67812345) + continue; + + if( *(volatile unsigned long*)(0x4400) != 0x56781234) + continue; + + if( *(volatile unsigned long*)(0x4500+bank_address) != 0x45678123) + continue; + + // if everything verified then found low bond + break; + + } + print_val("\r\nLow Bond ",i); + if( i < 0xff ){ + c = i++; + for( ; i <0xff ; i++){ + //pci_write_config8(ctrl.d0f3,0x70,i ^ (i>>1) ); + pci_write_config8(ctrl.d0f3,0x70, i); + // clear + *(volatile unsigned long*)(0x8000) = 0; + *(volatile unsigned long*)(0x8100+bank_address) = 0; + *(volatile unsigned long*)(0x8200) = 0x0; + *(volatile unsigned long*)(0x8300+bank_address) = 0; + *(volatile unsigned long*)(0x8400) = 0x0; + *(volatile unsigned long*)(0x8500+bank_address) = 0; + + // fill + *(volatile unsigned long*)(0x8000) = 0x12345678; + *(volatile unsigned long*)(0x8100+bank_address) = 0x81234567; + *(volatile unsigned long*)(0x8200) = 0x78123456; + *(volatile unsigned long*)(0x8300+bank_address) = 0x67812345; + *(volatile unsigned long*)(0x8400) = 0x56781234; + *(volatile unsigned long*)(0x8500+bank_address) = 0x45678123; + + // verify + if( *(volatile unsigned long*)(0x8000) != 0x12345678) + break; + + if( *(volatile unsigned long*)(0x8100+bank_address) != 0x81234567) + break; + + if( *(volatile unsigned long*)(0x8200) != 0x78123456) + break; + + if( *(volatile unsigned long*)(0x8300+bank_address) != 0x67812345) + break; + + if( *(volatile unsigned long*)(0x8400) != 0x56781234) + break; + + if( *(volatile unsigned long*)(0x8500+bank_address) != 0x45678123) + break; + + } + print_val(" High Bond ",i); + print_debug("\r\n"); + c = ((i - c)<<1)/3 + c; + print_val(" Setting DQS delay",c); + print_debug("\r\n"); + //c = c ^ (c>>1); // convert to gray code + pci_write_config8(ctrl.d0f3,0x70,c); + // pci_write_config8(ctrl.d0f3,0x70,0x67); + }else{ + //print_debug("Setting DQS Delay default\r\n"); + pci_write_config8(ctrl.d0f3,0x70,0x67); + } + + /* Set DQS ChB Output to the default */ + pci_write_config8(ctrl.d0f3, 0x71, 0x6c); + + /* Disable DQS Output Adjust */ + //b = pci_read_config8(ctrl.d0f3, 0x6b); + //b &= 0xbf; + //pci_write_config8(ctrl.d0f3, 0x6b, b); + + b = pci_read_config8(ctrl.d0f3, 0x69); + b |= 0x10; + pci_write_config8(ctrl.d0f3, 0x69, b); + + pci_write_config8(ctrl.d0f3, 0x79, 0x11); + + +/* + DRAM refresh rate Device 0 F3 Offset 6a + TODO :: Fix for different DRAM technologies + other than 512Mb and DRAM Freq + Units of 16 DRAM clock cycles. +*/ + + pci_write_config8(ctrl.d0f3,0x6a,0x6C); + + /* Open Up the Rest of the Shadow RAM */ + pci_write_config8(ctrl.d0f3,0x80,0xff); + pci_write_config8(ctrl.d0f3,0x81,0xff); + + + /* pci */ + //north = pci_locate_device(PCI_ID(0x1106, 0x7259), 0); + pci_write_config8(ctrl.d0f7, 0x70,0x82); + pci_write_config8(ctrl.d0f7,0x73,0x01); + pci_write_config8(ctrl.d0f7,0x76,0x50); + + pci_write_config8(ctrl.d0f7,0x71,0xc8); + + print_debug("CN400 Init done\r\n"); + + /* Graphics Control Basic Init. */ + //north = pci_locate_device(PCI_ID(0x1106, 0x3259), 0); + pci_write_config8(ctrl.d0f3, 0xb0, 0xFf); + pci_write_config8(ctrl.d0f3, 0xb1, 0xAA); + pci_write_config8(ctrl.d0f3, 0xb2, 0xAA); + pci_write_config8(ctrl.d0f3, 0xb3, 0x5A); + pci_write_config8(ctrl.d0f3, 0xb4, 0x0f); + + /* AGP Controller Interface Basic Init */ + pci_write_config8(ctrl.d0f3, 0xc0, 0x3b); + + /* VGA device, Basic frame Buffer Init. */ + pci_write_config8(ctrl.d0f3, 0xa0, 0x01); + /* Bit 7 = Enable VGA When Set to 1 */ + pci_write_config8(ctrl.d0f3, 0xa1, 0xef); + pci_write_config8(ctrl.d0f3, 0xa4, 0x00); + +} Index: src/northbridge/via/cn400/vgachip.h =================================================================== --- src/northbridge/via/cn400/vgachip.h (revision 0) +++ src/northbridge/via/cn400/vgachip.h (revision 0) @@ -0,0 +1,35 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2007 Corey Osgood corey.osgood@gmail.com + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef _PC80_VGABIOS +#define _PC80_VGABIOS + +extern struct chip_control pc80_vgabios_control; + +struct pc80_vgabios_config { + int nothing; +}; + +void vga_enable_console(void); +void do_vgabios(void); +void setup_realmode_idt(void); +void write_protect_vgabios(void); + +#endif /* _PC80_VGABIOS */ Index: src/northbridge/via/cn400/agp.c =================================================================== --- src/northbridge/via/cn400/agp.c (revision 0) +++ src/northbridge/via/cn400/agp.c (revision 0) @@ -0,0 +1,173 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2007 Corey Osgood corey.osgood@gmail.com + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <console/console.h> +#include <arch/io.h> +#include <stdint.h> +#include <device/device.h> +#include <device/pci.h> +#include <device/pci_ids.h> +#include "chip.h" +#include "northbridge.h" +#include "cn400.h" + +/* This is the main AGP device, and only one used when configured for AGP 2.0 */ +static void agp_init(device_t dev) +{ + u32 reg32; + + /* Some of this may not be necessary (should be handled by the OS). */ + printk_debug("Enabling AGP.\n"); + + /* Allow R/W access to AGP registers. */ + pci_write_config8(dev, 0x4d, 0x15); + + /* Setup PCI latency timer. */ + pci_write_config8(dev, 0xd, 0x8); + + /* + * Set to AGP 3.0 Mode, which should theoretically render the rest of + * the registers set here pointless. + */ + pci_write_config8(dev, 0x84, 0xb); + + /* AGP Request Queue Size */ + pci_write_config8(dev, 0x4a, 0x1f); + + /* + * AGP Hardware Support (default 0xc4) + * 7: AGP SBA Enable (1 to Enable) + * 6: AGP Enable + * 5: Reserved + * 4: Fast Write Enable + * 3: AGP8X Mode Enable + * 2: AGP4X Mode Enable + * 1: AGP2X Mode Enable + * 0: AGP1X Mode Enable + */ + pci_write_config8(dev, 0x4b, 0xc4); + + /* Enable AGP Backdoor */ + pci_write_config8(dev, 0xb5, 0x03); + + /* Set aperture to 32 MB. */ + /* TODO: Use config option, explain how it works. */ + pci_write_config32(dev, 0x94, 0x00010f38); + /* Set GART Table Base Address (31:12). */ + pci_write_config32(dev, 0x98, (0x1558 << 12)); + /* Set AGP Aperture Base. */ + pci_write_config32(dev, 0x10, 0xf8000008); + + /* Enable CPU/PMSTR GART Access. */ + reg32 = pci_read_config8(dev, 0xbf); + reg32 |= 0x80; + pci_write_config8(dev, 0xbf, reg32); + + /* Enable AGP Aperture. */ + reg32 = pci_read_config32(dev, 0x94); + reg32 |= (3 << 7); + pci_write_config32(dev, 0x90, reg32); + + /* AGP Control */ + pci_write_config8(dev, 0xbc, 0x21); + pci_write_config8(dev, 0xbd, 0xd2); + + /* + * AGP Pad, driving strength, and delay control. All this should be + * constant, seeing as the VGA controller is onboard. + */ + pci_write_config8(dev, 0x40, 0xc7); + pci_write_config8(dev, 0x41, 0xdb); + pci_write_config8(dev, 0x42, 0x10); + pci_write_config8(dev, 0x43, 0xdb); + pci_write_config8(dev, 0x44, 0x24); + + /* AGPC CKG Control */ + pci_write_config8(dev, 0xc0, 0x02); + pci_write_config8(dev, 0xc1, 0x02); +} + +static const struct device_operations agp_operations = { + .read_resources = cn400_noop, + .set_resources = pci_dev_set_resources, + .enable_resources = pci_dev_enable_resources, + .init = agp_init, + .ops_pci = 0, +}; + +static const struct pci_driver agp_driver __pci_driver = { + .ops = &agp_operations, + .vendor = PCI_VENDOR_ID_VIA, + .device = PCI_DEVICE_ID_VIA_CN400_AGP, +}; + +/* + * This is the AGP 3.0 "bridge" @Bus 0 Device 1 Func 0. When using AGP 3.0, the + * config in this device takes presidence. We configure both just to be safe. + */ +static void agp_bridge_init(device_t dev) +{ + printk_debug("Setting up AGP bridge device\n"); + + pci_write_config16(dev, 0x4, 0x0007); + + /* Secondary Bus Number */ + pci_write_config8(dev, 0x19, 0x01); + /* Subordinate Bus Number */ + pci_write_config8(dev, 0x1a, 0x01); + /* I/O Base */ + pci_write_config8(dev, 0x1c, 0xd0); + /* I/O Limit */ + pci_write_config8(dev, 0x1d, 0xd0); + + /* Memory Base */ + pci_write_config16(dev, 0x20, 0xfb00); + /* Memory Limit */ + pci_write_config16(dev, 0x22, 0xfcf0); + /* Prefetchable Memory Base */ + pci_write_config16(dev, 0x24, 0xf400); + /* Prefetchable Memory Limit */ + pci_write_config16(dev, 0x26, 0xf7f0); + /* Enable VGA Compatible Memory/IO Range */ + pci_write_config8(dev, 0x3e, 0x08); + + /* Second PCI Bus Control (see datasheet) */ + pci_write_config8(dev, 0x40, 0x83); + pci_write_config8(dev, 0x41, 0x43); + pci_write_config8(dev, 0x42, 0xe2); + pci_write_config8(dev, 0x43, 0x44); + pci_write_config8(dev, 0x44, 0x34); + pci_write_config8(dev, 0x45, 0x72); +} + +static const struct device_operations agp_bridge_operations = { + .read_resources = cn400_noop, + .set_resources = pci_dev_set_resources, + .enable_resources = pci_bus_enable_resources, + .init = agp_bridge_init, + .scan_bus = pci_scan_bridge, + .ops_pci = 0, +}; + +static const struct pci_driver agp_bridge_driver __pci_driver = { + .ops = &agp_bridge_operations, + .vendor = PCI_VENDOR_ID_VIA, + .device = PCI_DEVICE_ID_VIA_CN400_BRIDGE, +}; Index: src/northbridge/via/cn400/northbridge.c =================================================================== --- src/northbridge/via/cn400/northbridge.c (revision 0) +++ src/northbridge/via/cn400/northbridge.c (revision 0) @@ -0,0 +1,275 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2008 VIA Technologies, Inc. + * (Written by Aaron Lwe aaron.lwe@gmail.com for VIA) + * Copyright (C) 2007 Corey Osgood corey.osgood@gmail.com + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <console/console.h> +#include <arch/io.h> +#include <stdint.h> +#include <device/device.h> +#include <device/pci.h> +#include <device/pci_ids.h> +#include <stdlib.h> +#include <string.h> +#include <bitops.h> +#include <cpu/cpu.h> +#include "chip.h" +#include "northbridge.h" +#include "cn400.h" + +static void memctrl_init(device_t dev) +{ + device_t vlink_dev; + u16 reg16; + u8 ranks, pagec, paged, pagee, pagef, shadowreg; + + /* Set up the VGA framebuffer size. */ + reg16 = (log2(CONFIG_VIDEO_MB) << 12) | (1 << 15); + pci_write_config16(dev, 0xa0, reg16); + + /* Set up VGA timers. */ + pci_write_config8(dev, 0xa2, 0x44); + + for (ranks = 0x4b; ranks >= 0x48; ranks--) { + if (pci_read_config8(dev, ranks)) { + ranks -= 0x48; + break; + } + } + if (ranks == 0x47) + ranks = 0x00; + reg16 = 0xaae0; + reg16 |= ranks; + /* GMINT Misc. FrameBuffer rank */ + pci_write_config16(dev, 0xb0, reg16); + /* AGPCINT Misc. */ + pci_write_config8(dev, 0xb8, 0x08); + + /* Shadow RAM */ + pagec = 0xff, paged = 0xff, pagee = 0xff, pagef = 0x30; + /* PAGE C, D, E are all read write enable */ + pci_write_config8(dev, 0x80, pagec); + pci_write_config8(dev, 0x81, paged); + pci_write_config8(dev, 0x82, pagee); + /* PAGE F are read/writable */ + shadowreg = pci_read_config8(dev, 0x83); + shadowreg |= pagef; + pci_write_config8(dev, 0x83, shadowreg); + /* vlink mirror */ + vlink_dev = dev_find_device(PCI_VENDOR_ID_VIA, + PCI_DEVICE_ID_VIA_CN400_VLINK, 0); + if (vlink_dev) { + pci_write_config8(vlink_dev, 0x61, pagec); + pci_write_config8(vlink_dev, 0x62, paged); + pci_write_config8(vlink_dev, 0x64, pagee); + + shadowreg = pci_read_config8(vlink_dev, 0x63); + shadowreg |= pagef; + pci_write_config8(vlink_dev, 0x63, shadowreg); + } +} + +static const struct device_operations memctrl_operations = { + .read_resources = cn400_noop, + .init = memctrl_init, +}; + +static const struct pci_driver memctrl_driver __pci_driver = { + .ops = &memctrl_operations, + .vendor = PCI_VENDOR_ID_VIA, + .device = PCI_DEVICE_ID_VIA_CN400_MEMCTRL, +}; + +static void pci_domain_read_resources(device_t dev) +{ + struct resource *resource; + + printk_spew("Entering cn400 pci_domain_read_resources.\n"); + + /* Initialize the system wide I/O space constraints. */ + resource = new_resource(dev, IOINDEX_SUBTRACTIVE(0, 0)); + resource->limit = 0xffffUL; + resource->flags = IORESOURCE_IO | IORESOURCE_SUBTRACTIVE | + IORESOURCE_ASSIGNED; + + /* Initialize the system wide memory resources constraints. */ + resource = new_resource(dev, IOINDEX_SUBTRACTIVE(1, 0)); + resource->limit = 0xffffffffULL; + resource->flags = IORESOURCE_MEM | IORESOURCE_SUBTRACTIVE | + IORESOURCE_ASSIGNED; + + printk_spew("Leaving cn400 pci_domain_read_resources.\n"); +} + +static void ram_resource(device_t dev, unsigned long index, + unsigned long basek, unsigned long sizek) +{ + struct resource *resource; + + if (!sizek) + return; + + resource = new_resource(dev, index); + resource->base = ((resource_t) basek) << 10; + resource->size = ((resource_t) sizek) << 10; + resource->flags = IORESOURCE_MEM | IORESOURCE_CACHEABLE | + IORESOURCE_FIXED | IORESOURCE_STORED | IORESOURCE_ASSIGNED; +} + +static void tolm_test(void *gp, struct device *dev, struct resource *new) +{ + struct resource **best_p = gp; + struct resource *best; + + best = *best_p; + if (!best || (best->base > new->base)) + best = new; + *best_p = best; +} + +static u32 find_pci_tolm(struct bus *bus) +{ + struct resource *min; + u32 tolm; + + print_debug("Entering find_pci_tolm\n"); + + min = 0; + search_bus_resources(bus, IORESOURCE_MEM, IORESOURCE_MEM, + tolm_test, &min); + tolm = 0xffffffffUL; + if (min && tolm > min->base) + tolm = min->base; + + print_debug("Leaving find_pci_tolm\n"); + + return tolm; +} + +#if HAVE_HIGH_TABLES==1 +/* maximum size of high tables in KB */ +#define HIGH_TABLES_SIZE 64 +extern uint64_t high_tables_base, high_tables_size; +#endif + +static void pci_domain_set_resources(device_t dev) +{ + /* The order is important to find the correct RAM size. */ + static const u8 ramregs[] = { 0x43, 0x42, 0x41, 0x40 }; + device_t mc_dev; + u32 pci_tolm; + + printk_spew("Entering cn400 pci_domain_set_resources.\n"); + + pci_tolm = find_pci_tolm(&dev->link[0]); + mc_dev = dev_find_device(PCI_VENDOR_ID_VIA, + PCI_DEVICE_ID_VIA_CN400_MEMCTRL, 0); + + if (mc_dev) { + unsigned long tomk, tolmk; + unsigned char rambits; + int i, idx; + + /* + * Once the register value is not zero, the RAM size is + * this register's value multiply 64 * 1024 * 1024. + */ + for (rambits = 0, i = 0; i < ARRAY_SIZE(ramregs); i++) { + rambits = pci_read_config8(mc_dev, ramregs[i]); + if (rambits != 0) + break; + } + + tomk = rambits * 64 * 1024; + printk_spew("tomk is 0x%x\n", tomk); + /* Compute the Top Of Low Memory (TOLM), in Kb. */ + tolmk = pci_tolm >> 10; + if (tolmk >= tomk) { + /* The PCI hole does does not overlap the memory. */ + tolmk = tomk; + } + +#if HAVE_HIGH_TABLES == 1 + high_tables_base = (tolmk - HIGH_TABLES_SIZE) * 1024; + high_tables_size = HIGH_TABLES_SIZE* 1024; + printk_debug("tom: %lx, high_tables_base: %llx, high_tables_size: %llx\n", tomk*1024, high_tables_base, high_tables_size); +#endif + + /* Report the memory regions. */ + idx = 10; + /* TODO: Hole needed? */ + ram_resource(dev, idx++, 0, 640); /* First 640k */ + /* Leave a hole for VGA, 0xa0000 - 0xc0000 */ + ram_resource(dev, idx++, 768, + (tolmk - 768 - CONFIG_VIDEO_MB * 1024)); + } + assign_resources(&dev->link[0]); +} + +static unsigned int pci_domain_scan_bus(device_t dev, unsigned int max) +{ + printk_debug("Entering cn400 pci_domain_scan_bus.\n"); + + max = pci_scan_bus(&dev->link[0], PCI_DEVFN(0, 0), 0xff, max); + return max; +} + +static const struct device_operations pci_domain_ops = { + .read_resources = pci_domain_read_resources, + .set_resources = pci_domain_set_resources, + .enable_resources = enable_childrens_resources, + .init = 0, + .scan_bus = pci_domain_scan_bus, +}; + +static void cpu_bus_init(device_t dev) +{ + initialize_cpus(&dev->link[0]); +} + +static void cpu_bus_noop(device_t dev) +{ +} + +static const struct device_operations cpu_bus_ops = { + .read_resources = cpu_bus_noop, + .set_resources = cpu_bus_noop, + .enable_resources = cpu_bus_noop, + .init = cpu_bus_init, + .scan_bus = 0, +}; + +static void enable_dev(struct device *dev) +{ + printk_spew("In cn400 enable_dev for device %s.\n", dev_path(dev)); + + /* Set the operations if it is a special bus type. */ + if (dev->path.type == DEVICE_PATH_PCI_DOMAIN) { + dev->ops = &pci_domain_ops; + pci_set_method(dev); + } else if (dev->path.type == DEVICE_PATH_APIC_CLUSTER) { + dev->ops = &cpu_bus_ops; + } +} + +struct chip_operations northbridge_via_cn400_ops = { + CHIP_NAME("VIA CN400 Northbridge") + .enable_dev = enable_dev, +}; Index: src/northbridge/via/cn400/chip.h =================================================================== --- src/northbridge/via/cn400/chip.h (revision 0) +++ src/northbridge/via/cn400/chip.h (revision 0) @@ -0,0 +1,24 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2007 Corey Osgood corey.osgood@gmail.com + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +struct northbridge_via_cn400_config { +}; + +extern struct chip_operations northbridge_via_cn400_ops; Index: src/northbridge/via/cn400/raminit.h =================================================================== --- src/northbridge/via/cn400/raminit.h (revision 0) +++ src/northbridge/via/cn400/raminit.h (revision 0) @@ -0,0 +1,31 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2007 Corey Osgood corey_osgood@verizon.net + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef RAMINIT_H +#define RAMINIT_H + +#define DIMM_SOCKETS 1 /* Only one works, for now. */ + +struct mem_controller { + device_t d0f0, d0f2, d0f3, d0f4, d0f7, d1f0; + u8 channel0[DIMM_SOCKETS]; +}; + +#endif Index: src/northbridge/via/cn400/cn400.h =================================================================== --- src/northbridge/via/cn400/cn400.h (revision 0) +++ src/northbridge/via/cn400/cn400.h (revision 0) @@ -0,0 +1,53 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2007 Corey Osgood corey.osgood@gmail.com + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef __ROMCC__ +static void cn400_noop() +{ +} +#endif + +/* VGA stuff */ +#define SR_INDEX 0x3c4 +#define SR_DATA 0x3c5 +#define CRTM_INDEX 0x3b4 +#define CRTM_DATA 0x3b5 +#define CRTC_INDEX 0x3d4 +#define CRTC_DATA 0x3d5 + +/* Memory controller registers */ +#define RANK0_END 0x40 +#define RANK1_END 0x41 +#define RANK2_END 0x42 +#define RANK3_END 0x43 + +#define DDR_PAGE_CTL 0x69 +#define DRAM_REFRESH_COUNTER 0x6a +#define DRAM_MISC_CTL 0x6b +#define CH_A_DQS_OUTPUT_DELAY 0x70 +#define CH_A_MD_OUTPUT_DELAY 0x71 + +/* RAM init commands */ +#define RAM_COMMAND_NORMAL (const char) 0x00 +#define RAM_COMMAND_NOP (const char) 0x01 +#define RAM_COMMAND_PRECHARGE (const char) 0x02 +#define RAM_COMMAND_MSR_LOW (const char) 0x03 +#define RAM_COMMAND_CBR (const char) 0x04 +#define RAM_COMMAND_MSR_HIGH (const char) 0x05 Index: src/northbridge/via/cn400/vgabios.c =================================================================== --- src/northbridge/via/cn400/vgabios.c (revision 0) +++ src/northbridge/via/cn400/vgabios.c (revision 0) @@ -0,0 +1,839 @@ +#include <console/console.h> +#include <device/pci.h> +#include <device/pci_ids.h> +#include <device/pci_ops.h> +#undef __KERNEL__ +#include <arch/io.h> +//#include <printk.h> +#include <string.h> +#include "vgachip.h" + +/* vgabios.c. Derived from: */ + +/*------------------------------------------------------------ -*- C -*- + * 2 Kernel Monte a.k.a. Linux loading Linux on x86 + * + * Erik Arjan Hendriks hendriks@lanl.gov + * + * This version is a derivative of the original two kernel monte + * which is (C) 2000 Scyld. + * + * Copyright (C) 2000 Scyld Computing Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + * + * Portions related to the alpha architecture are: + * + * Copyright(C) 2001 University of California. LA-CC Number 01-67. + * This software has been authored by an employee or employees of the + * University of California, operator of the Los Alamos National + * Laboratory under Contract No. W-7405-ENG-36 with the U.S. + * Department of Energy. The U.S. Government has rights to use, + * reproduce, and distribute this software. If the software is + * modified to produce derivative works, such modified software should + * be clearly marked, so as not to confuse it with the version + * available from LANL. + * + * This software may be used and distributed according to the terms + * of the GNU General Public License, incorporated herein by + * reference to http://www.gnu.org/licenses/gpl.html. + * + * This software is provided by the author(s) "as is" and any express + * or implied warranties, including, but not limited to, the implied + * warranties of merchantability and fitness for a particular purpose + * are disclaimed. In no event shall the author(s) be liable for any + * direct, indirect, incidental, special, exemplary, or consequential + * damages (including, but not limited to, procurement of substitute + * goods or services; loss of use, data, or profits; or business + * interruption) however caused and on any theory of liability, + * whether in contract, strict liability, or tort (including + * negligence or otherwise) arising in any way out of the use of this + * software, even if advised of the possibility of such damage. + * + * $Id: vgabios.c,v 1.5 2004/10/06 17:33:52 rminnich Exp $ + *--------------------------------------------------------------------*/ + +/* Modified to be a self sufficient plug in so that it can be used + without reliance on other parts of coreboot's core + (C) 2005 Nick.Barker9@btinternet.com + + Used initially for epia-m where there are problems getting the bios + emulator to successfully run this bios. +*/ + +/* Declare a temporary global descriptor table - necessary because the + Core part of the bios no longer sets up any 16 bit segments */ +__asm__ ( + /* pointer to original gdt */ + "gdtarg: \n" + " .word gdt_limit \n" + " .long gdt \n" + + /* compute the table limit */ + "__mygdt_limit = __mygdt_end - __mygdt - 1 \n" + + "__mygdtaddr: \n" + " .word __mygdt_limit \n" + " .long __mygdt \n" + + "__mygdt: \n" + /* selgdt 0, unused */ + " .word 0x0000, 0x0000 \n" + " .byte 0x00, 0x00, 0x00, 0x00 \n" + + /* selgdt 8, unused */ + " .word 0x0000, 0x0000 \n" + " .byte 0x00, 0x00, 0x00, 0x00 \n" + + /* selgdt 0x10, flat code segment */ + " .word 0xffff, 0x0000 \n" + " .byte 0x00, 0x9b, 0xcf, 0x00 \n" + + /* selgdt 0x18, flat data segment */ + " .word 0xffff, 0x0000 \n" + " .byte 0x00, 0x93, 0xcf, 0x00 \n" + + /* selgdt 0x20, unused */ + " .word 0x0000, 0x0000 \n" + " .byte 0x00, 0x00, 0x00, 0x00 \n" + + /* selgdt 0x28 16-bit 64k code at 0x00000000 */ + " .word 0xffff, 0x0000 \n" + " .byte 0, 0x9a, 0, 0 \n" + + /* selgdt 0x30 16-bit 64k data at 0x00000000 */ + " .word 0xffff, 0x0000 \n" + " .byte 0, 0x92, 0, 0 \n" + + "__mygdt_end: \n" +); + +/* Declare a pointer to where our idt is going to be i.e. at mem zero */ +__asm__ ("__myidt: \n" + /* 16-bit limit */ + " .word 1023 \n" + /* 24-bit base */ + " .long 0 \n" + " .word 0 \n" +); + +/* The address arguments to this function are PHYSICAL ADDRESSES */ +static void real_mode_switch_call_vga(unsigned long devfn) +{ + __asm__ __volatile__ ( + // paranoia -- does ecx get saved? not sure. This is + // the easiest safe thing to do. + " pushal \n" + /* save the stack */ + " mov %esp, __stack \n" + " jmp 1f \n" + "__stack: .long 0 \n" + "1:\n" + /* get devfn into %ecx */ + " movl %esp, %ebp \n" + " movl 8(%ebp), %ecx \n" + /* load 'our' gdt */ + " lgdt %cs:__mygdtaddr \n" + + /* This configures CS properly for real mode. */ + " ljmp $0x28, $__rms_16bit\n" + "__rms_16bit: \n" + " .code16 \n" + /* 16 bit code from here on... */ + + /* Load the segment registers w/ properly configured segment + * descriptors. They will retain these configurations (limits, + * writability, etc.) once protected mode is turned off. */ + " mov $0x30, %ax \n" + " mov %ax, %ds \n" + " mov %ax, %es \n" + " mov %ax, %fs \n" + " mov %ax, %gs \n" + " mov %ax, %ss \n" + + /* Turn off protection (bit 0 in CR0) */ + " movl %cr0, %eax \n" + " andl $0xFFFFFFFE, %eax \n" + " movl %eax, %cr0 \n" + + /* Now really going into real mode */ + " ljmp $0, $__rms_real\n" + "__rms_real: \n" + + /* put the stack at the end of page zero. + * that way we can easily share it between real and protected, + * since the 16-bit ESP at segment 0 will work for any case. + /* Setup a stack */ + " mov $0x0, %ax \n" + " mov %ax, %ss \n" + " movl $0x1000, %eax \n" + " movl %eax, %esp \n" + + /* Load our 16 it idt */ + " xor %ax, %ax \n" + " mov %ax, %ds \n" + " lidt __myidt \n" + + /* Dump zeros in the other segregs */ + " mov %ax, %es \n" + " mov %ax, %fs \n" + " mov %ax, %gs \n" + " mov $0x40, %ax \n" + " mov %ax, %ds \n" + " mov %cx, %ax \n" + + /* run VGA BIOS at 0xc000:0003 */ + " lcall $0xc000, $0x0003\n" + + /* if we got here, just about done. + * Need to get back to protected mode */ + " movl %cr0, %eax \n" + " orl $0x0000001, %eax\n" /* PE = 1 */ + " movl %eax, %cr0 \n" + + /* Now that we are in protected mode jump to a 32 bit code segment. */ + " data32 ljmp $0x10, $vgarestart\n" + "vgarestart:\n" + " .code32\n" + " movw $0x18, %ax \n" + " mov %ax, %ds \n" + " mov %ax, %es \n" + " mov %ax, %fs \n" + " mov %ax, %gs \n" + " mov %ax, %ss \n" + + /* restore proper gdt and idt */ + " lgdt %cs:gdtarg \n" + " lidt idtarg \n" + + ".globl vga_exit \n" + "vga_exit: \n" + " mov __stack, %esp \n" + " popal \n" + ); +} + +__asm__ (".text\n""real_mode_switch_end:\n"); +extern char real_mode_switch_end[]; + +/* call vga bios int 10 function 0x4f14 to enable main console + epia-m does not always autosence the main console so forcing it on is good !! */ +void vga_enable_console() +{ + __asm__ __volatile__ ( + /* paranoia -- does ecx get saved? not sure. This is + * the easiest safe thing to do. */ + " pushal \n" + /* save the stack */ + " mov %esp, __stack \n" + + /* load 'our' gdt */ + " lgdt %cs:__mygdtaddr \n" + + /* This configures CS properly for real mode. */ + " ljmp $0x28, $__vga_ec_16bit\n" + "__vga_ec_16bit: \n" + " .code16 \n" + /* 16 bit code from here on... */ + + /* Load the segment registers w/ properly configured segment + * descriptors. They will retain these configurations (limits, + * writability, etc.) once protected mode is turned off. */ + " mov $0x30, %ax \n" + " mov %ax, %ds \n" + " mov %ax, %es \n" + " mov %ax, %fs \n" + " mov %ax, %gs \n" + " mov %ax, %ss \n" + + /* Turn off protection (bit 0 in CR0) */ + " movl %cr0, %eax \n" + " andl $0xFFFFFFFE, %eax\n" + " movl %eax, %cr0 \n" + + /* Now really going into real mode */ + " ljmp $0, $__vga_ec_real \n" + "__vga_ec_real: \n" + + /* put the stack at the end of page zero. + * that way we can easily share it between real and protected, + * since the 16-bit ESP at segment 0 will work for any case. + /* Setup a stack */ + " mov $0x0, %ax \n" + " mov %ax, %ss \n" + " movl $0x1000, %eax \n" + " movl %eax, %esp \n" + + /* debugging for RGM */ + " mov $0x11, %al \n" + " outb %al, $0x80 \n" + + /* Load our 16 it idt */ + " xor %ax, %ax \n" + " mov %ax, %ds \n" + " lidt __myidt \n" + + /* Dump zeros in the other segregs */ + " mov %ax, %ds \n" + " mov %ax, %es \n" + " mov %ax, %fs \n" + " mov %ax, %gs \n" + + /* ask bios to enable main console */ + /* set up for int 10 call - values found from X server + * bios call routines */ + " movw $0x4f14,%ax \n" + " movw $0x8003,%bx \n" + " movw $1, %cx \n" + " movw $0, %dx \n" + " movw $0, %di \n" + " int $0x10 \n" + + " movb $0x55, %al \n" + " outb %al, $0x80 \n" + + /* if we got here, just about done. + * Need to get back to protected mode */ + " movl %cr0, %eax \n" + " orl $0x0000001, %eax\n" /* PE = 1 */ + " movl %eax, %cr0 \n" + + /* Now that we are in protected mode jump to a 32 bit code segment. */ + " data32 ljmp $0x10, $vga_ec_restart\n" + "vga_ec_restart:\n" + " .code32\n" + " movw $0x18, %ax \n" + " mov %ax, %ds \n" + " mov %ax, %es \n" + " mov %ax, %fs \n" + " mov %ax, %gs \n" + " mov %ax, %ss \n" + + /* restore proper gdt and idt */ + " lgdt %cs:gdtarg \n" + " lidt idtarg \n" + " .globl vga__ec_exit \n" + "vga_ec_exit:\n" + " mov __stack, %esp \n" + " popal\n" + ); +} + +void do_vgabios(void) +{ + device_t dev; + unsigned long busdevfn; + unsigned int rom = 0; + unsigned char *buf; + unsigned int size = 64*1024; + int i; + + /* clear vga bios data area */ + for (i = 0x400; i < 0x500; i++) { + *(unsigned char *) i = 0; + } + + dev = dev_find_class(PCI_CLASS_DISPLAY_VGA<<8 , 0); + + if (!dev) { + printk_debug("NO VGA FOUND\n"); + return; + } + printk_debug("found VGA: vid=%x, did=%x\n", dev->vendor, dev->device); + + /* declare rom address here - keep any config data out of the way + * of core LXB stuff */ + + rom = 0xfff80000; + pci_write_config32(dev, PCI_ROM_ADDRESS, rom|1); + printk_debug("rom base, size: %x\n", rom); + + buf = (unsigned char *) rom; + if ((buf[0] == 0x55) && (buf[1] == 0xaa)) { + memcpy((void *) 0xc0000, buf, size); + + write_protect_vgabios(); // in northbridge + + // check signature again + buf = (unsigned char *) 0xc0000; + if (buf[0]==0x55 && buf[1]==0xAA) { + busdevfn = (dev->bus->secondary << 8) | dev->path.pci.devfn; + printk_debug("bus/devfn = %#x\n", busdevfn); + + real_mode_switch_call_vga(busdevfn); + } else + printk_debug("Failed to copy VGA BIOS to 0xc0000\n"); + } else + printk_debug("BAD SIGNATURE 0x%x 0x%x\n", buf[0], buf[1]); + + pci_write_config32(dev, PCI_ROM_ADDRESS, 0); +} + + +// we had hoped to avoid this. +// this is a stub IDT only. It's main purpose is to ignore calls +// to the BIOS. +// no longer. Dammit. We have to respond to these. +struct realidt { + unsigned short offset, cs; +}; + +// from a handy writeup that andrey found. + +// handler. +// There are some assumptions we can make here. +// First, the Top Of Stack (TOS) is located on the top of page zero. +// we can share this stack between real and protected mode. +// that simplifies a lot of things ... +// we'll just push all the registers on the stack as longwords, +// and pop to protected mode. +// second, since this only ever runs as part of coreboot, +// we know all the segment register values -- so we don't save any. +// keep the handler that calls things small. It can do a call to +// more complex code in coreboot itself. This helps a lot as we don't +// have to do address fixup in this little stub, and calls are absolute +// so the handler is relocatable. +void handler(void) +{ + __asm__ __volatile__ ( + " .code16 \n" + "idthandle: \n" + " pushal \n" + " movb $0, %al \n" + " ljmp $0, $callbiosint16\n" + "end_idthandle: \n" + " .code32 \n" + ); +} + +void debughandler(void) +{ + __asm__ __volatile__ ( + " .code16 \n" + "debughandle: \n" + " pushw %cx \n" + " movw $250, %cx \n" + "dbh1: \n" + " loop dbh1 \n" + " popw %cx \n" + " iret \n" + "end_debughandle: \n" + ".code32 \n" + ); +} + +// Calling conventions. The first C function is called with this stuff +// on the stack. They look like value parameters, but note that if you +// modify them they will go back to the INTx function modified. +// the C function will call the biosint function with these as +// REFERENCE parameters. In this way, we can easily get +// returns back to the INTx caller (i.e. vgabios) +void callbiosint(void) +{ + __asm__ __volatile__ ( + " .code16 \n" + "callbiosint16: \n" + " push %ds \n" + " push %es \n" + " push %fs \n" + " push %gs \n" + // clean up the int #. To save space we put it in the lower + // byte. But the top 24 bits are junk. + " andl $0xff, %eax\n" + // this push does two things: + // - put the INT # on the stack as a parameter + // - provides us with a temp for the %cr0 mods. + " pushl %eax \n" + " movl %cr0, %eax\n" + " orl $0x00000001, %eax\n" /* PE = 1 */ + " movl %eax, %cr0\n" + /* Now that we are in protected mode jump to a 32 bit code segment. */ + " data32 ljmp $0x10, $biosprotect\n" + "biosprotect: \n" + " .code32 \n" + " movw $0x18, %ax \n" + " mov %ax, %ds \n" + " mov %ax, %es \n" + " mov %ax, %fs \n" + " mov %ax, %gs \n" + " mov %ax, %ss \n" + " lidt idtarg \n" + " call biosint \n" + // back to real mode ... + " ljmp $0x28, $__rms_16bit2\n" + "__rms_16bit2: \n" + " .code16 \n" + /* 16 bit code from here on... */ + /* Load the segment registers w/ properly configured segment + * descriptors. They will retain these configurations (limits, + * writability, etc.) once protected mode is turned off. */ + " mov $0x30, %ax \n" + " mov %ax, %ds \n" + " mov %ax, %es \n" + " mov %ax, %fs \n" + " mov %ax, %gs \n" + " mov %ax, %ss \n" + + /* Turn off protection (bit 0 in CR0) */ + " movl %cr0, %eax \n" + " andl $0xFFFFFFFE, %eax \n" + " movl %eax, %cr0 \n" + + /* Now really going into real mode */ + " ljmp $0, $__rms_real2 \n" + "__rms_real2: \n" + + /* Setup a stack + * FixME: where is esp? */ + " mov $0x0, %ax \n" + " mov %ax, %ss \n" + + /* ebugging for RGM */ + " mov $0x11, %al \n" + " outb %al, $0x80 \n" + + /* Load our 16 it idt */ + " xor %ax, %ax \n" + " mov %ax, %ds \n" + " lidt __myidt \n" + + /* Dump zeros in the other segregs */ + " mov %ax, %es \n" + " mov %ax, %fs \n" + " mov %ax, %gs \n" + " mov $0x40, %ax \n" + " mov %ax, %ds \n" + + /* pop the INT # that you pushed earlier */ + " popl %eax \n" + " pop %gs \n" + " pop %fs \n" + " pop %es \n" + " pop %ds \n" + " popal \n" + " iret \n" + " .code32 \n" + ); +} + +enum { + PCIBIOS = 0x1a, + MEMSIZE = 0x12 +}; + +int pcibios(unsigned long *pedi, unsigned long *pesi, unsigned long *pebp, + unsigned long *pesp, unsigned long *pebx, unsigned long *pedx, + unsigned long *pecx, unsigned long *peax, unsigned long *pflags); + +int handleint21(unsigned long *pedi, unsigned long *pesi, unsigned long *pebp, + unsigned long *pesp, unsigned long *pebx, unsigned long *pedx, + unsigned long *pecx, unsigned long *peax, unsigned long *pflags + ); + +extern void vga_exit(void); + +int biosint(unsigned long intnumber, + unsigned long gsfs, unsigned long dses, + unsigned long edi, unsigned long esi, + unsigned long ebp, unsigned long esp, + unsigned long ebx, unsigned long edx, + unsigned long ecx, unsigned long eax, + unsigned long cs_ip, unsigned short stackflags) +{ + unsigned long ip; + unsigned long cs; + unsigned long flags; + int ret = -1; + + ip = cs_ip & 0xffff; + cs = cs_ip >> 16; + flags = stackflags; + + printk_debug("biosint: INT# 0x%lx\n", intnumber); + printk_debug("biosint: eax 0x%lx ebx 0x%lx ecx 0x%lx edx 0x%lx\n", + eax, ebx, ecx, edx); + printk_debug("biosint: ebp 0x%lx esp 0x%lx edi 0x%lx esi 0x%lx\n", + ebp, esp, edi, esi); + printk_debug("biosint: ip 0x%x cs 0x%x flags 0x%x\n", + ip, cs, flags); + + // cases in a good compiler are just as good as your own tables.
+ switch (intnumber) { + case 0 ... 15: + // These are not BIOS service, but the CPU-generated exceptions + printk_info("biosint: Oops, exception %u\n", intnumber); + if (esp < 0x1000) { + printk_debug("Stack contents: "); + while (esp < 0x1000) { + printk_debug("0x%04x ", *(unsigned short *) esp); + esp += 2; + } + printk_debug("\n"); + } + printk_debug("biosint: Bailing out\n"); + // "longjmp" + vga_exit(); + break; + + case PCIBIOS: + ret = pcibios( &edi, &esi, &ebp, &esp, + &ebx, &edx, &ecx, &eax, &flags); + break; + case MEMSIZE: + // who cares. + eax = 64 * 1024; + ret = 0; + break; + case 0x15: + ret=handleint21( &edi, &esi, &ebp, &esp, + &ebx, &edx, &ecx, &eax, &flags); + break; + default: + printk_info("BIOSINT: Unsupport int #0x%x\n", + intnumber); + break; + } + if (ret) + flags |= 1; // carry flags + else + flags &= ~1; + stackflags = flags; + return ret; +} + + +void setup_realmode_idt(void) +{ + extern unsigned char idthandle, end_idthandle; + extern unsigned char debughandle, end_debughandle; + + int i; + struct realidt *idts = (struct realidt *) 0; + int codesize = &end_idthandle - &idthandle; + unsigned char *intbyte, *codeptr; + + // for each int, we create a customized little handler + // that just pushes %ax, puts the int # in %al, + // then calls the common interrupt handler. + // this necessitated because intel didn't know much about + // architecture when they did the 8086 (it shows) + // (hmm do they know anymore even now :-) + // obviously you can see I don't really care about memory + // efficiency. If I did I would probe back through the stack + // and get it that way. But that's really disgusting. + for (i = 0; i < 256; i++) { + idts[i].cs = 0; + codeptr = (char*) 4096 + i * codesize; + idts[i].offset = (unsigned) codeptr; + memcpy(codeptr, &idthandle, codesize); + intbyte = codeptr + 3; + *intbyte = i; + } + + // fixed entry points + + // VGA BIOSes tend to hardcode f000:f065 as the previous handler of + // int10. + // calling convention here is the same as INTs, we can reuse + // the int entry code. + codeptr = (char*) 0xff065; + memcpy(codeptr, &idthandle, codesize); + intbyte = codeptr + 3; + *intbyte = 0x42; /* int42 is the relocated int10 */ + + /* debug handler - useful to set a programmable delay between instructions if the + TF bit is set upon call to real mode */ + idts[1].cs = 0; + idts[1].offset = 16384; + memcpy(16384, &debughandle, &end_debughandle - &debughandle); + + +} + + + +enum { + CHECK = 0xb001, + FINDDEV = 0xb102, + READCONFBYTE = 0xb108, + READCONFWORD = 0xb109, + READCONFDWORD = 0xb10a, + WRITECONFBYTE = 0xb10b, + WRITECONFWORD = 0xb10c, + WRITECONFDWORD = 0xb10d +}; + +// errors go in AH. Just set these up so that word assigns +// will work. KISS. +enum { + PCIBIOS_NODEV = 0x8600, + PCIBIOS_BADREG = 0x8700 +}; + +int +pcibios(unsigned long *pedi, unsigned long *pesi, unsigned long *pebp, + unsigned long *pesp, unsigned long *pebx, unsigned long *pedx, + unsigned long *pecx, unsigned long *peax, unsigned long *pflags) +{ + unsigned long edi = *pedi; + unsigned long esi = *pesi; + unsigned long ebp = *pebp; + unsigned long esp = *pesp; + unsigned long ebx = *pebx; + unsigned long edx = *pedx; + unsigned long ecx = *pecx; + unsigned long eax = *peax; + unsigned long flags = *pflags; + unsigned short func = (unsigned short) eax; + int retval = 0; + unsigned short devid, vendorid, devfn; + short devindex; /* Use short to get rid of garbage in upper half of 32-bit register */ + unsigned char bus; + device_t dev; + + switch(func) { + case CHECK: + *pedx = 0x4350; + *pecx = 0x2049; + retval = 0; + break; + case FINDDEV: + { + devid = *pecx; + vendorid = *pedx; + devindex = *pesi; + dev = 0; + while ((dev = dev_find_device(vendorid, devid, dev))) { + if (devindex <= 0) + break; + devindex--; + } + if (dev) { + unsigned short busdevfn; + *peax = 0; + // busnum is an unsigned char; + // devfn is an int, so we mask it off. + busdevfn = (dev->bus->secondary << 8) + | (dev->path.pci.devfn & 0xff); + printk_debug("0x%x: return 0x%x\n", func, busdevfn); + *pebx = busdevfn; + retval = 0; + } else { + *peax = PCIBIOS_NODEV; + retval = -1; + } + } + break; + case READCONFDWORD: + case READCONFWORD: + case READCONFBYTE: + case WRITECONFDWORD: + case WRITECONFWORD: + case WRITECONFBYTE: + { + unsigned long dword; + unsigned short word; + unsigned char byte; + unsigned char reg; + + devfn = *pebx & 0xff; + bus = *pebx >> 8; + reg = *pedi; + dev = dev_find_slot(bus, devfn); + if (! dev) { + printk_debug("0x%x: BAD DEVICE bus %d devfn 0x%x\n", func, bus, devfn); + // idiots. the pcibios guys assumed you'd never pass a bad bus/devfn! + *peax = PCIBIOS_BADREG; + retval = -1; + } + switch(func) { + case READCONFBYTE: + byte = pci_read_config8(dev, reg); + *pecx = byte; + break; + case READCONFWORD: + word = pci_read_config16(dev, reg); + *pecx = word; + break; + case READCONFDWORD: + dword = pci_read_config32(dev, reg); + *pecx = dword; + break; + case WRITECONFBYTE: + byte = *pecx; + pci_write_config8(dev, reg, byte); + break; + case WRITECONFWORD: + word = *pecx; + pci_write_config16(dev, reg, word); + break; + case WRITECONFDWORD: + dword = *pecx; + pci_write_config32(dev, reg, dword); + break; + } + + if (retval) + retval = PCIBIOS_BADREG; + printk_debug("0x%x: bus %d devfn 0x%x reg 0x%x val 0x%lx\n", + func, bus, devfn, reg, *pecx); + *peax = 0; + retval = 0; + } + break; + default: + printk_err("UNSUPPORTED PCIBIOS FUNCTION 0x%x\n", func); + break; + } + + return retval; +} + +int handleint21(unsigned long *edi, unsigned long *esi, unsigned long *ebp, + unsigned long *esp, unsigned long *ebx, unsigned long *edx, + unsigned long *ecx, unsigned long *eax, unsigned long *flags) +{ + int res=-1; + switch(*eax&0xffff) + { + case 0x5f19: + break; + case 0x5f18: + *eax=0x5f; + *ebx=0x545; // MCLK = 133, 32M frame buffer, 256 M main memory + *ecx=0x060; + res=0; + break; + case 0x5f00: + *eax = 0x8600; + break; + case 0x5f01: + *eax = 0x5f; + *ecx = (*ecx & 0xffffff00 ) | 2; // panel type = 2 = 1024 * 768 + res = 0; + break; + case 0x5f02: + *eax=0x5f; + *ebx= (*ebx & 0xffff0000) | 2; + *ecx= (*ecx & 0xffff0000) | 0x401; // PAL + crt only + *edx= (*edx & 0xffff0000) | 0; // TV Layout - default + res=0; + break; + case 0x5f0f: + *eax=0x860f; + break; + } + return res; +} Index: src/northbridge/via/cn400/northbridge.h =================================================================== --- src/northbridge/via/cn400/northbridge.h (revision 0) +++ src/northbridge/via/cn400/northbridge.h (revision 0) @@ -0,0 +1,26 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2007 Corey Osgood corey.osgood@gmail.com + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef NORTHBRIDGE_VIA_CN400_H +#define NORTHBRIDGE_VIA_CN400_H + +extern unsigned int cn400_scan_root_bus(device_t root, unsigned int max); + +#endif /* NORTHBRIDGE_VIA_CN400_H */ Index: src/northbridge/via/cn400/vga.c =================================================================== --- src/northbridge/via/cn400/vga.c (revision 0) +++ src/northbridge/via/cn400/vga.c (revision 0) @@ -0,0 +1,123 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2007 Corey Osgood corey.osgood@gmail.com + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/* + * Note: Some of the VGA control registers are located on the memory + * controller. Registers are set both in raminit.c and northbridge.c. + */ + +#include <console/console.h> +#include <arch/io.h> +#include <stdint.h> +#include <device/device.h> +#include <device/pci.h> +#include <device/pci_ids.h> +#include <stdlib.h> +#include <string.h> +#include <bitops.h> +#include <cpu/cpu.h> +#include "chip.h" +#include "northbridge.h" +#include "cn400.h" +#include "vgachip.h" + +void write_protect_vgabios(void) +{ + /* Don't bother for now. */ +} + +static void vga_init(device_t dev) +{ + u8 reg8; + + print_debug("Copying BOCHS BIOS to 0xf000\n"); + /* + * Copy BOCHS BIOS from 4G-ROM_SIZE-64k (in flash) to 0xf0000 (in RAM) + * This is for compatibility with the VGA ROM's BIOS callbacks. + */ + memcpy(0xf0000, (0xffffffff - ROM_SIZE - 0xffff), 0x10000); + + printk_debug("Initializing VGA\n"); + + /* Set memory rate to 200 MHz. */ + outb(0x3d, CRTM_INDEX); + reg8 = inb(CRTM_DATA); + reg8 &= 0x0f; + reg8 |= (0x1 << 4); + outb(0x3d, CRTM_INDEX); + outb(reg8, CRTM_DATA); + + /* Set framebuffer size. */ + reg8 = (CONFIG_VIDEO_MB / 4); + outb(0x39, SR_INDEX); + outb(reg8, SR_DATA); + + pci_write_config8(dev, 0x04, 0x07); + pci_write_config8(dev, 0x0d, 0x20); + pci_write_config32(dev, 0x10, 0xf4000008); + pci_write_config32(dev, 0x14, 0xfb000000); + + printk_debug("INSTALL REAL-MODE IDT\n"); + setup_realmode_idt(); + printk_debug("DO THE VGA BIOS\n"); + do_vgabios(); + /* VGA seems to work without this, but crash & burn with it. */ + // printk_debug("Enable VGA console\n"); + // vga_enable_console(); + + /* It's not clear if these need to be programmed before or after + * the VGA BIOS runs. Try both, clean up later. */ + /* Set memory rate to 200 MHz (again). */ + outb(0x3d, CRTM_INDEX); + reg8 = inb(CRTM_DATA); + reg8 &= 0x0f; + reg8 |= (0x1 << 4); + outb(0x3d, CRTM_INDEX); + outb(reg8, CRTM_DATA); + + /* Set framebuffer size (again). */ + reg8 = (CONFIG_VIDEO_MB / 4); + outb(0x39, SR_INDEX); + outb(reg8, SR_DATA); + + /* Clear the BOCHS BIOS out of memory, so it doesn't confuse Linux. */ + memset(0xf0000, 0, 0x10000); +} + +static void vga_read_resources(device_t dev) +{ + dev->rom_address = 0xfff80000; + dev->on_mainboard = 1; + pci_dev_read_resources(dev); +} + +static const struct device_operations vga_operations = { + .read_resources = vga_read_resources, + .set_resources = pci_dev_set_resources, + .enable_resources = pci_dev_enable_resources, + .init = vga_init, + .ops_pci = 0, +}; + +static const struct pci_driver vga_driver __pci_driver = { + .ops = &vga_operations, + .vendor = PCI_VENDOR_ID_VIA, + .device = PCI_DEVICE_ID_VIA_CN400_VGA, +}; Index: targets/via/epia-n/Config-abuild.lb =================================================================== --- targets/via/epia-n/Config-abuild.lb (revision 0) +++ targets/via/epia-n/Config-abuild.lb (revision 0) @@ -0,0 +1,21 @@ +# This will make a target directory of ./VENDOR_MAINBOARD + +target VENDOR_MAINBOARD +mainboard VENDOR/MAINBOARD + +option CC="CROSSCC" +option CROSS_COMPILE="CROSS_PREFIX" +option HOSTCC="CROSS_HOSTCC" + +__COMPRESSION__ +__LOGLEVEL__ + +option ROM_SIZE=512*1024 + +romimage "fallback" + option USE_FALLBACK_IMAGE=1 + option ROM_IMAGE_SIZE=0x20000 + option COREBOOT_EXTRA_VERSION=".0-fallback" + payload __PAYLOAD__ +end +buildrom ./coreboot.rom ROM_SIZE "fallback" Index: targets/via/epia-n/Config.lb =================================================================== --- targets/via/epia-n/Config.lb (revision 0) +++ targets/via/epia-n/Config.lb (revision 0) @@ -0,0 +1,49 @@ +## +## This file is part of the coreboot project. +## +## Copyright (C) 2008 VIA Technologies, Inc. +## (Written by Aaron Lwe aaron.lwe@gmail.com for VIA) +## +## This program is free software; you can redistribute it and/or modify +## it under the terms of the GNU General Public License as published by +## the Free Software Foundation; either version 2 of the License, or +## (at your option) any later version. +## +## This program is distributed in the hope that it will be useful, +## but WITHOUT ANY WARRANTY; without even the implied warranty of +## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +## GNU General Public License for more details. +## +## You should have received a copy of the GNU General Public License +## along with this program; if not, write to the Free Software +## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA +## + +target via_epia_n +mainboard via/epia-n + +option MAXIMUM_CONSOLE_LOGLEVEL=10 +option DEFAULT_CONSOLE_LOGLEVEL=10 +option CONFIG_CONSOLE_SERIAL8250=1 + +# coreboot C code runs at this location in RAM +option _RAMBASE=0x00004000 + +# +# Generate the final ROM like this: +# cat vgabios bochsbios coreboot.rom > coreboot.rom.final +# +#option ROM_SIZE = (512 * 1024) - (64 * 1024) - (64 * 1024) + +romimage "image" + option COREBOOT_EXTRA_VERSION = "-epia_n" + payload ../../../../../payloads/filo/build/filo.elf +end + +romimage "fallback" + option COREBOOT_EXTRA_VERSION = "-epia_n-fallback" + payload ../../../../../payloads/filo/build/filo.elf +end + +#buildrom ./coreboot.rom ROM_SIZE "image" "fallback" +buildrom ./coreboot.rom FALLBACK_SIZE "image" "fallback" -----Original Message----- From: Carl-Daniel Hailfinger [mailto:c-d.hailfinger.devel.2006@gmx.net] Sent: 24 June 2009 11:32 To: Harrison, Jon (SELEX GALILEO, UK) Cc: Peter Stuge; bari; coreboot@coreboot.org Subject: Re: [coreboot] coreboot for C3/CN400 (Luke)
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On 24.06.2009 12:17, Harrison, Jon (SELEX GALILEO, UK) wrote:
I've made a bit of progress, now getting beyond the basic RAM init.
RAM init is one of the big obstacles in finishing a port. If RAM works reliably for you, please send your code to the list.
Regards, Carl-Daniel