Author: uwe Date: 2007-03-17 15:00:23 +0100 (Sat, 17 Mar 2007) New Revision: 2571
Added: trunk/LinuxBIOSv2/src/southbridge/via/vt82c686/ trunk/LinuxBIOSv2/src/southbridge/via/vt82c686/Config.lb trunk/LinuxBIOSv2/src/southbridge/via/vt82c686/chip.h trunk/LinuxBIOSv2/src/southbridge/via/vt82c686/vt82c686.h trunk/LinuxBIOSv2/src/southbridge/via/vt82c686/vt82c686_early_serial.c Log: Add initial pre-RAM serial output support for the VIA VT82C686(A/B) southbridge (with integrated Super-I/O).
Signed-off-by: Corey Osgood corey_osgood@verizon.net Signed-off-by: Uwe Hermann uwe@hermann-uwe.de Acked-by: Corey Osgood corey_osgood@verizon.net
Added: trunk/LinuxBIOSv2/src/southbridge/via/vt82c686/Config.lb =================================================================== --- trunk/LinuxBIOSv2/src/southbridge/via/vt82c686/Config.lb (rev 0) +++ trunk/LinuxBIOSv2/src/southbridge/via/vt82c686/Config.lb 2007-03-17 14:00:23 UTC (rev 2571) @@ -0,0 +1,22 @@ +## +## This file is part of the LinuxBIOS 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 +## + +config chip.h +
Added: trunk/LinuxBIOSv2/src/southbridge/via/vt82c686/chip.h =================================================================== --- trunk/LinuxBIOSv2/src/southbridge/via/vt82c686/chip.h (rev 0) +++ trunk/LinuxBIOSv2/src/southbridge/via/vt82c686/chip.h 2007-03-17 14:00:23 UTC (rev 2571) @@ -0,0 +1,35 @@ +/* + * This file is part of the LinuxBIOS 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 _SUPERIO_VIA_VT82C686 +#define _SUPERIO_VIA_VT82C686 + +#include <device/device.h> +#include <pc80/keyboard.h> +#include <uart8250.h> + +extern struct chip_operations superio_via_vt82c686_ops; + +struct superio_via_vt82c686_config { + struct uart8250 com1, com2; + struct pc_keyboard keyboard; +}; + +#endif /* _SUPERIO_VIA_VT82C686 */
Added: trunk/LinuxBIOSv2/src/southbridge/via/vt82c686/vt82c686.h =================================================================== --- trunk/LinuxBIOSv2/src/southbridge/via/vt82c686/vt82c686.h (rev 0) +++ trunk/LinuxBIOSv2/src/southbridge/via/vt82c686/vt82c686.h 2007-03-17 14:00:23 UTC (rev 2571) @@ -0,0 +1,56 @@ +/* + * This file is part of the LinuxBIOS 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 + */ + +/* Datasheets: + * Name: VT82C686A "Super South" South Bridge + * Link: http://www.datasheets.org.uk/datasheet.php?article=3510260 + * Name: VT82C686B "Super South" South Bridge + * Link: http://www.datasheet4u.com/html/V/T/8/VT82C686B_VIA.pdf.html + */ + +/* Super I/0 Configuration Registers. */ +/* Any registers not listed here are reserved. */ +#define VT82C686_SIO_DEV_ID 0xe0 /* Super-I/O Device ID */ +#define VT82C686_SIO_REV 0xe1 /* Super-I/O Device Revision */ +#define VT82C686_FS 0xe2 /* Function Select */ +#define VT82C686_FDC 0xe3 /* Floppy */ +#define VT82C686_PP 0xe6 /* Parallel Port */ +#define VT82C686_SP1 0xe7 /* Serial Port 1 */ +#define VT82C686_SP2 0xe8 /* Serial Port 2 */ +#define VT82C686_SP_CFG 0xee /* Serial Port Configuration */ +#define VT82C686_POWER 0xef /* Power Down Control */ +#define VT82C686_PP_CTRL 0xf0 /* Parallel Port Control */ +#define VT82C686_SP_CTRL 0xf1 /* Serial Port Control */ +#define VT82C686_FDC_CFG 0xf6 /* Floppy Controller Configuration */ +#define VT82C686_FDC_DC 0xf8 /* Floppy Drive Control */ +#define VT82C686_GPIO 0xfc /* General Purpose I/O */ + +/* For reference, used PCI IDs and their names in pci_ids.h: */ +/* +PCI_VENDOR_ID_VIA 0x1106 +PCI_DEVICE_ID_VIA_82C686 0x0686 // Function 0, PCI Config +PCI_DEVICE_ID_VIA_82C586_1 0x0571 // Function 1, IDE Controller +PCI_DEVICE_ID_VIA_82C586_2 0x3038 // Functions 2 & 3, USB Ports 0-1 & 2-3 +PCI_DEVICE_ID_VIA_82C586_3 0x3040 // Possible 2nd USB Controller? +PCI_DEVICE_ID_VIA_82C686_4 0x3057 // Function 4, Power Management +PCI_DEVICE_ID_VIA_82C686_5 0x3058 // Function 5, AC'97 Codec +PCI_DEVICE_ID_VIA_82C686_6 0x3068 // Function 6, MC'97 Codec +*/ +
Added: trunk/LinuxBIOSv2/src/southbridge/via/vt82c686/vt82c686_early_serial.c =================================================================== --- trunk/LinuxBIOSv2/src/southbridge/via/vt82c686/vt82c686_early_serial.c (rev 0) +++ trunk/LinuxBIOSv2/src/southbridge/via/vt82c686/vt82c686_early_serial.c 2007-03-17 14:00:23 UTC (rev 2571) @@ -0,0 +1,92 @@ +/* + * This file is part of the LinuxBIOS project. + * + * Copyright (C) 2006-2007 Uwe Hermann uwe@hermann-uwe.de + * 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 + */ + +/* This has been ported to the VIA VT82C686(A/B) from the SMSC FDC37M60x + * by Corey Osgood. See vt82c686.h for more information. */ + +#include <arch/romcc_io.h> +#include <device/pci_ids.h> +#include "vt82c686.h" + +#define SIO_INDEX 0x3f0 +#define SIO_DATA 0x3f1 + +/** + * Configure the chip by writing the byte 'value' into the register + * specified by 'index'. + * + * @param index The index of the register to modify. + * @param value The value to write into the register. + */ +static void vt82c686_sio_write(uint8_t index, uint8_t value) +{ + outb(index, SIO_INDEX); + outb(value, SIO_DATA); +} + +/** + * Enable the serial port(s) of the VT82C686(A/B) Super I/O chip. + * + * @param dev TODO + * @param iobase TODO + */ +static void vt82c686_enable_serial(device_t dev, unsigned iobase) +{ + uint8_t reg; + device_t sbdev; + + /* TODO: Use info from 'dev' and 'iobase'. */ + /* TODO: Only enable one serial port (depending on config) or both? */ + + /* (1) Enter configuration mode (set Function 0 Rx85[1] = 1). */ + + /* Find the southbridge. Die upon error. */ + sbdev = pci_locate_device(PCI_ID(PCI_VENDOR_ID_VIA, + PCI_DEVICE_ID_VIA_82C686), 0); + // sbdev = PCI_DEV(0, 7, 0); + if (sbdev == PCI_DEV_INVALID) { + /* Serial output is not yet working at this point, but + * die() emits the POST code 0xff and halts the CPU, too. */ + die("Southbridge not found.\r\n"); + } + + /* Enable Super-I/O (bit 0) and Super-I/O Configuration (bit 1). */ + reg = pci_read_config8(sbdev, 0x85); + pci_write_config8(sbdev, 0x85, reg | 0x3); /* Set bits 0 and 1. */ + + /* (2) Configure the chip. */ + + /* Enable serial port 1 (set bit 2) and 2 (set bit 3). */ + vt82c686_sio_write(VT82C686_FS, 0xf); + + // vt82c686_sio_write(VT82C686_POWER, 0x00); /* No powerdown */ + // vt82c686_sio_write(VT82C686_SP_CTRL, 0x00); /* Normal operation */ + vt82c686_sio_write(VT82C686_SP1, 0xfe); /* SP1: 0x3f8 */ + vt82c686_sio_write(VT82C686_SP2, 0xbe); /* SP2: 0x2f8 */ + + /* Enable high speed on serial port 1 (set bit 6) and 2 (set bit 7). */ + vt82c686_sio_write(VT82C686_SP_CFG, 0xc0); + + /* (3) Exit configuration mode (set Function 0 Rx85[1] = 0). */ + reg = pci_read_config8(sbdev, 0x85); + pci_write_config8(sbdev, 0x85, reg & 0xfd); /* Clear bit 1. */ +} +
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