Author: stepan Date: 2008-03-17 00:36:00 +0100 (Mon, 17 Mar 2008) New Revision: 3158
Added: trunk/coreboot-v2/src/northbridge/intel/i3100/ trunk/coreboot-v2/src/northbridge/intel/i3100/Config.lb trunk/coreboot-v2/src/northbridge/intel/i3100/chip.h trunk/coreboot-v2/src/northbridge/intel/i3100/i3100.h trunk/coreboot-v2/src/northbridge/intel/i3100/memory_initialized.c trunk/coreboot-v2/src/northbridge/intel/i3100/northbridge.c trunk/coreboot-v2/src/northbridge/intel/i3100/pciexp_porta.c trunk/coreboot-v2/src/northbridge/intel/i3100/raminit.c trunk/coreboot-v2/src/northbridge/intel/i3100/raminit.h Log: This patch implements support for the Intel 3100 integrated northbridge and RAM controller.
Signed-off-by: Ed Swierk eswierk@arastra.com Acked-by: Stefan Reinauer stepan@coresystems.de
Added: trunk/coreboot-v2/src/northbridge/intel/i3100/Config.lb =================================================================== --- trunk/coreboot-v2/src/northbridge/intel/i3100/Config.lb (rev 0) +++ trunk/coreboot-v2/src/northbridge/intel/i3100/Config.lb 2008-03-16 23:36:00 UTC (rev 3158) @@ -0,0 +1,22 @@ +## +## This file is part of the coreboot project. +## +## Copyright (C) 2008 Arastra, Inc. +## +## This program is free software; you can redistribute it and/or modify +## it under the terms of the GNU General Public License version 2 as +## published by the Free Software Foundation. +## +## 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 +driver northbridge.o +driver pciexp_porta.o
Added: trunk/coreboot-v2/src/northbridge/intel/i3100/chip.h =================================================================== --- trunk/coreboot-v2/src/northbridge/intel/i3100/chip.h (rev 0) +++ trunk/coreboot-v2/src/northbridge/intel/i3100/chip.h 2008-03-16 23:36:00 UTC (rev 3158) @@ -0,0 +1,27 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2008 Arastra, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * 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_intel_i3100_config +{ + /* Interrupt line connect */ + u16 intrline; +}; + +extern struct chip_operations northbridge_intel_i3100_ops;
Added: trunk/coreboot-v2/src/northbridge/intel/i3100/i3100.h =================================================================== --- trunk/coreboot-v2/src/northbridge/intel/i3100/i3100.h (rev 0) +++ trunk/coreboot-v2/src/northbridge/intel/i3100/i3100.h 2008-03-16 23:36:00 UTC (rev 3158) @@ -0,0 +1,59 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2008 Arastra, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * 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 IURBASE 0X14 +#define MCHCFG0 0X50 +#define MCHSCRB 0X52 +#define FDHC 0X58 +#define PAM 0X59 +#define DRB 0X60 +#define DRA 0X70 +#define DRT 0X78 +#define DRC 0X7C +#define DRM 0X80 +#define DRORC 0X82 +#define ECCDIAG 0X84 +#define SDRC 0X88 +#define CKDIS 0X8C +#define CKEDIS 0X8D +#define DDRCSR 0X9A +#define DEVPRES 0X9C +#define DEVPRES_D0F0 (1 << 0) +#define DEVPRES_D1F0 (1 << 1) +#define DEVPRES_D2F0 (1 << 2) +#define DEVPRES_D3F0 (1 << 3) +#define DEVPRES_D4F0 (1 << 4) +#define DEVPRES_D5F0 (1 << 5) +#define DEVPRES_D6F0 (1 << 6) +#define DEVPRES_D7F0 (1 << 7) +#define ESMRC 0X9D +#define SMRC 0X9E +#define EXSMRC 0X9F +#define DDR2ODTC 0XB0 +#define TOLM 0XC4 +#define REMAPBASE 0XC6 +#define REMAPLIMIT 0XC8 +#define REMAPOFFSET 0XCA +#define TOM 0XCC +#define EXPECBASE 0XCE +#define DEVPRES1 0XF4 +#define DEVPRES1_D0F1 (1 << 5) +#define DEVPRES1_D8F0 (1 << 1) +#define MSCFG 0XF6
Added: trunk/coreboot-v2/src/northbridge/intel/i3100/memory_initialized.c =================================================================== --- trunk/coreboot-v2/src/northbridge/intel/i3100/memory_initialized.c (rev 0) +++ trunk/coreboot-v2/src/northbridge/intel/i3100/memory_initialized.c 2008-03-16 23:36:00 UTC (rev 3158) @@ -0,0 +1,29 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2008 Arastra, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * 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 "i3100.h" +#define NB_DEV PCI_DEV(0, 0, 0) + +static inline int memory_initialized(void) +{ + u32 drc; + drc = pci_read_config32(NB_DEV, DRC); + return (drc & (1<<29)); +}
Added: trunk/coreboot-v2/src/northbridge/intel/i3100/northbridge.c =================================================================== --- trunk/coreboot-v2/src/northbridge/intel/i3100/northbridge.c (rev 0) +++ trunk/coreboot-v2/src/northbridge/intel/i3100/northbridge.c 2008-03-16 23:36:00 UTC (rev 3158) @@ -0,0 +1,291 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2008 Arastra, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * 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 code is based on src/northbridge/intel/e7520/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 <device/hypertransport.h> +#include <stdlib.h> +#include <string.h> +#include <bitops.h> +#include <cpu/cpu.h> +#include "chip.h" +#include "i3100.h" + + +static u32 max_bus; + +static void ram_resource(device_t dev, u32 index, + u32 basek, u32 sizek) +{ + struct resource *resource; + + 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 pci_domain_read_resources(device_t dev) +{ + struct resource *resource; + + /* Initialize the system wide io space constraints */ + resource = new_resource(dev, IOINDEX_SUBTRACTIVE(0,0)); + resource->base = 0; + resource->size = 0; + resource->align = 0; + resource->gran = 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->base = 0; + resource->size = 0; + resource->align = 0; + resource->gran = 0; + resource->limit = 0xffffffffUL; + resource->flags = IORESOURCE_MEM | IORESOURCE_SUBTRACTIVE | 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; + min = 0; + search_bus_resources(bus, IORESOURCE_MEM, IORESOURCE_MEM, tolm_test, &min); + tolm = 0xffffffffUL; + if (min && tolm > min->base) { + tolm = min->base; + } + return tolm; +} + + +static void pci_domain_set_resources(device_t dev) +{ + device_t mc_dev; + u32 pci_tolm; + + pci_tolm = find_pci_tolm(&dev->link[0]); + +#if 1 + printk_debug("PCI mem marker = %x\n", pci_tolm); +#endif + /* FIXME Me temporary hack */ + if(pci_tolm > 0xe0000000) + pci_tolm = 0xe0000000; + /* Ensure pci_tolm is 128M aligned */ + pci_tolm &= 0xf8000000; + mc_dev = dev->link[0].children; + if (mc_dev) { + /* Figure out which areas are/should be occupied by RAM. + * This is all computed in kilobytes and converted to/from + * the memory controller right at the edges. + * Having different variables in different units is + * too confusing to get right. Kilobytes are good up to + * 4 Terabytes of RAM... + */ + u16 tolm_r, remapbase_r, remaplimit_r, remapoffset_r; + u32 tomk, tolmk; + u32 remapbasek, remaplimitk, remapoffsetk; + + /* Get the Top of Memory address, units are 128M */ + tomk = ((u32)pci_read_config16(mc_dev, TOM)) << 17; + /* Compute the Top of Low Memory */ + tolmk = (pci_tolm & 0xf8000000) >> 10; + + if (tolmk >= tomk) { + /* The PCI hole does not overlap memory + * we won't use the remap window. + */ + tolmk = tomk; + remapbasek = 0x3ff << 16; + remaplimitk = 0 << 16; + remapoffsetk = 0 << 16; + } + else { + /* The PCI memory hole overlaps memory + * setup the remap window. + */ + /* Find the bottom of the remap window + * is it above 4G? + */ + remapbasek = 4*1024*1024; + if (tomk > remapbasek) { + remapbasek = tomk; + } + /* Find the limit of the remap window */ + remaplimitk = (remapbasek + (4*1024*1024 - tolmk) - (1 << 16)); + /* Find the offset of the remap window from tolm */ + remapoffsetk = remapbasek - tolmk; + } + /* Write the ram configruation registers, + * preserving the reserved bits. + */ + tolm_r = pci_read_config16(mc_dev, 0xc4); + tolm_r = ((tolmk >> 17) << 11) | (tolm_r & 0x7ff); + pci_write_config16(mc_dev, 0xc4, tolm_r); + + remapbase_r = pci_read_config16(mc_dev, 0xc6); + remapbase_r = (remapbasek >> 16) | (remapbase_r & 0xfc00); + pci_write_config16(mc_dev, 0xc6, remapbase_r); + + remaplimit_r = pci_read_config16(mc_dev, 0xc8); + remaplimit_r = (remaplimitk >> 16) | (remaplimit_r & 0xfc00); + pci_write_config16(mc_dev, 0xc8, remaplimit_r); + + remapoffset_r = pci_read_config16(mc_dev, 0xca); + remapoffset_r = (remapoffsetk >> 16) | (remapoffset_r & 0xfc00); + pci_write_config16(mc_dev, 0xca, remapoffset_r); + + /* Report the memory regions */ + ram_resource(dev, 3, 0, 640); + ram_resource(dev, 4, 768, (tolmk - 768)); + if (tomk > 4*1024*1024) { + ram_resource(dev, 5, 4096*1024, tomk - 4*1024*1024); + } + if (remaplimitk >= remapbasek) { + ram_resource(dev, 6, remapbasek, + (remaplimitk + 64*1024) - remapbasek); + } + } + assign_resources(&dev->link[0]); +} + +static u32 pci_domain_scan_bus(device_t dev, u32 max) +{ + max = pci_scan_bus(&dev->link[0], 0, 0xff, max); + if (max > max_bus) { + max_bus = max; + } + return max; +} + +static 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, + .ops_pci_bus = &pci_cf8_conf1, /* Do we want to use the memory mapped space here? */ +}; + +static void mc_read_resources(device_t dev) +{ + struct resource *resource; + + pci_dev_read_resources(dev); + + resource = new_resource(dev, 0xcf); + resource->base = 0xe0000000; + resource->size = max_bus * 4096*256; + resource->flags = IORESOURCE_MEM | IORESOURCE_FIXED | IORESOURCE_STORED | IORESOURCE_ASSIGNED; +} + +static void mc_set_resources(device_t dev) +{ + struct resource *resource, *last; + + last = &dev->resource[dev->resources]; + resource = find_resource(dev, 0xcf); + if (resource) { + report_resource_stored(dev, resource, "<mmconfig>"); + } + pci_dev_set_resources(dev); +} + +static void intel_set_subsystem(device_t dev, unsigned vendor, unsigned device) +{ + pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID, + ((device & 0xffff) << 16) | (vendor & 0xffff)); +} + +static struct pci_operations intel_pci_ops = { + .set_subsystem = intel_set_subsystem, +}; + +static struct device_operations mc_ops = { + .read_resources = mc_read_resources, + .set_resources = mc_set_resources, + .enable_resources = pci_dev_enable_resources, + .init = 0, + .scan_bus = 0, + .ops_pci = &intel_pci_ops, +}; + +static struct pci_driver mc_driver __pci_driver = { + .ops = &mc_ops, + .vendor = PCI_VENDOR_ID_INTEL, + .device = PCI_DEVICE_ID_INTEL_3100_MC, +}; + +static void cpu_bus_init(device_t dev) +{ + initialize_cpus(&dev->link[0]); +} + +static void cpu_bus_noop(device_t dev) +{ +} + +static 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(device_t dev) +{ + /* Set the operations if it is a special bus type */ + if (dev->path.type == DEVICE_PATH_PCI_DOMAIN) { + dev->ops = &pci_domain_ops; + } + else if (dev->path.type == DEVICE_PATH_APIC_CLUSTER) { + dev->ops = &cpu_bus_ops; + } +} + +struct chip_operations northbridge_intel_i3100_ops = { + CHIP_NAME("Intel 3100 Northbridge") + .enable_dev = enable_dev, +};
Added: trunk/coreboot-v2/src/northbridge/intel/i3100/pciexp_porta.c =================================================================== --- trunk/coreboot-v2/src/northbridge/intel/i3100/pciexp_porta.c (rev 0) +++ trunk/coreboot-v2/src/northbridge/intel/i3100/pciexp_porta.c 2008-03-16 23:36:00 UTC (rev 3158) @@ -0,0 +1,88 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2008 Arastra, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * 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 code is based on src/northbridge/intel/e7520/pciexp_porta.c */ + +#include <console/console.h> +#include <device/device.h> +#include <device/pci.h> +#include <device/pci_ids.h> +#include <device/pci_ops.h> +#include <device/pciexp.h> +#include <arch/io.h> +#include "chip.h" +#include <part/hard_reset.h> + +typedef struct northbridge_intel_i3100_config config_t; + +static void pcie_init(struct device *dev) +{ + config_t *config; + + /* Get the chip configuration */ + config = dev->chip_info; + + if(config->intrline) { + pci_write_config32(dev, 0x3c, config->intrline); + } + +} + +static unsigned int pcie_scan_bridge(struct device *dev, unsigned int max) +{ + u16 val; + u16 ctl; + int flag = 0; + do { + val = pci_read_config16(dev, 0x76); + printk_debug("pcie porta 0x76: %02x\n", val); + if ((val & (1<<10)) && (!flag)) { /* training error */ + ctl = pci_read_config16(dev, 0x74); + pci_write_config16(dev, 0x74, (ctl | (1<<5))); + val = pci_read_config16(dev, 0x76); + printk_debug("pcie porta reset 0x76: %02x\n", val); + flag=1; + hard_reset(); + } + } while (val & (3<<10)); + return pciexp_scan_bridge(dev, max); +} + +static struct device_operations pcie_ops = { + .read_resources = pci_bus_read_resources, + .set_resources = pci_dev_set_resources, + .enable_resources = pci_bus_enable_resources, + .init = pcie_init, + .scan_bus = pcie_scan_bridge, + .reset_bus = pci_bus_reset, + .ops_pci = 0, +}; + +static struct pci_driver pci_driver_0 __pci_driver = { + .ops = &pcie_ops, + .vendor = PCI_VENDOR_ID_INTEL, + .device = PCI_DEVICE_ID_INTEL_3100_PCIE_PA, +}; + +static struct pci_driver pci_driver_1 __pci_driver = { + .ops = &pcie_ops, + .vendor = PCI_VENDOR_ID_INTEL, + .device = PCI_DEVICE_ID_INTEL_3100_PCIE_PA1, +};
Added: trunk/coreboot-v2/src/northbridge/intel/i3100/raminit.c =================================================================== --- trunk/coreboot-v2/src/northbridge/intel/i3100/raminit.c (rev 0) +++ trunk/coreboot-v2/src/northbridge/intel/i3100/raminit.c 2008-03-16 23:36:00 UTC (rev 3158) @@ -0,0 +1,1224 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2008 Arastra, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * 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 code is based on src/northbridge/intel/e7520/raminit.c */ + +#include <cpu/x86/mem.h> +#include <cpu/x86/mtrr.h> +#include <cpu/x86/cache.h> +#include "raminit.h" +#include "i3100.h" + +/* DDR2 memory controller register space */ +#define MCBAR 0x90000000 + +static void sdram_set_registers(const struct mem_controller *ctrl) +{ + static const u32 register_values[] = { + + /* CKDIS 0x8c disable clocks */ + PCI_ADDR(0, 0x00, 0, CKDIS), 0xffff0000, 0x0000ffff, + + /* 0x9c Device present and extended RAM control + * DEVPRES is very touchy, hard code the initialization + * of PCI-E ports here. + */ + PCI_ADDR(0, 0x00, 0, DEVPRES), 0x00000000, 0x07020801 | DEVPRES_CONFIG, + + /* 0xc8 Remap RAM base and limit off */ + PCI_ADDR(0, 0x00, 0, REMAPLIMIT), 0x00000000, 0x03df0000, + + /* ??? */ + PCI_ADDR(0, 0x00, 0, 0xd8), 0x00000000, 0xb5930000, + PCI_ADDR(0, 0x00, 0, 0xe8), 0x00000000, 0x00004a2a, + + /* 0x50 scrub */ + PCI_ADDR(0, 0x00, 0, MCHCFG0), 0xfce0ffff, 0x00006000, /* 6000 */ + + /* 0x58 0x5c PAM */ + PCI_ADDR(0, 0x00, 0, PAM-1), 0xcccccc7f, 0x33333000, + PCI_ADDR(0, 0x00, 0, PAM+3), 0xcccccccc, 0x33333333, + + /* 0xf4 */ + PCI_ADDR(0, 0x00, 0, DEVPRES1), 0xffbffff, (1<<22)|(6<<2) | DEVPRES1_CONFIG, + + /* 0x14 */ + PCI_ADDR(0, 0x00, 0, IURBASE), 0x00000fff, MCBAR |0, + }; + int i; + int max; + + max = sizeof(register_values)/sizeof(register_values[0]); + for(i = 0; i < max; i += 3) { + device_t dev; + u32 where; + u32 reg; + dev = (register_values[i] & ~0xff) - PCI_DEV(0, 0x00, 0) + ctrl->f0; + where = register_values[i] & 0xff; + reg = pci_read_config32(dev, where); + reg &= register_values[i+1]; + reg |= register_values[i+2]; + pci_write_config32(dev, where, reg); + } + print_spew("done.\r\n"); +} + +struct dimm_size { + u32 side1; + u32 side2; +}; + +static struct dimm_size spd_get_dimm_size(u16 device) +{ + /* Calculate the log base 2 size of a DIMM in bits */ + struct dimm_size sz; + int value, low, ddr2; + sz.side1 = 0; + sz.side2 = 0; + + /* Note it might be easier to use byte 31 here, it has the DIMM size as + * a multiple of 4MB. The way we do it now we can size both + * sides of an assymetric dimm. + */ + value = spd_read_byte(device, 3); /* rows */ + if (value < 0) goto hw_err; + if ((value & 0xf) == 0) goto val_err; + sz.side1 += value & 0xf; + + value = spd_read_byte(device, 4); /* columns */ + if (value < 0) goto hw_err; + if ((value & 0xf) == 0) goto val_err; + sz.side1 += value & 0xf; + + value = spd_read_byte(device, 17); /* banks */ + if (value < 0) goto hw_err; + if ((value & 0xff) == 0) goto val_err; + sz.side1 += log2(value & 0xff); + + /* Get the module data width and convert it to a power of two */ + value = spd_read_byte(device, 7); /* (high byte) */ + if (value < 0) goto hw_err; + value &= 0xff; + value <<= 8; + + low = spd_read_byte(device, 6); /* (low byte) */ + if (low < 0) goto hw_err; + value = value | (low & 0xff); + if ((value != 72) && (value != 64)) goto val_err; + sz.side1 += log2(value); + + /* side 2 */ + value = spd_read_byte(device, 5); /* number of physical banks */ + + if (value < 0) goto hw_err; + value &= 7; + value++; + if (value == 1) goto out; + if (value != 2) goto val_err; + + /* Start with the symmetrical case */ + sz.side2 = sz.side1; + + value = spd_read_byte(device, 3); /* rows */ + if (value < 0) goto hw_err; + if ((value & 0xf0) == 0) goto out; /* If symmetrical we are done */ + sz.side2 -= (value & 0x0f); /* Subtract out rows on side 1 */ + sz.side2 += ((value >> 4) & 0x0f); /* Add in rows on side 2 */ + + value = spd_read_byte(device, 4); /* columns */ + if (value < 0) goto hw_err; + if ((value & 0xff) == 0) goto val_err; + sz.side2 -= (value & 0x0f); /* Subtract out columns on side 1 */ + sz.side2 += ((value >> 4) & 0x0f); /* Add in columns on side 2 */ + goto out; + + val_err: + die("Bad SPD value\r\n"); + /* If an hw_error occurs report that I have no memory */ + hw_err: + sz.side1 = 0; + sz.side2 = 0; + out: + return sz; + +} + +static long spd_set_ram_size(const struct mem_controller *ctrl, long dimm_mask) +{ + int i; + int cum; + + for(i = cum = 0; i < DIMM_SOCKETS; i++) { + struct dimm_size sz; + if (dimm_mask & (1 << i)) { + sz = spd_get_dimm_size(ctrl->channel0[i]); + if (sz.side1 < 29) { + return -1; /* Report SPD error */ + } + /* convert bits to multiples of 64MB */ + sz.side1 -= 29; + cum += (1 << sz.side1); + /* DRB = 0x60 */ + pci_write_config8(ctrl->f0, DRB + (i*2), cum); + if( sz.side2 > 28) { + sz.side2 -= 29; + cum += (1 << sz.side2); + } + pci_write_config8(ctrl->f0, DRB+1 + (i*2), cum); + } + else { + pci_write_config8(ctrl->f0, DRB + (i*2), cum); + pci_write_config8(ctrl->f0, DRB+1 + (i*2), cum); + } + } + cum >>= 1; + /* set TOM top of memory 0xcc */ + pci_write_config16(ctrl->f0, TOM, cum); + /* set TOLM top of low memory */ + if(cum > 0x18) { + cum = 0x18; + } + cum <<= 11; + /* 0xc4 TOLM */ + pci_write_config16(ctrl->f0, TOLM, cum); + return 0; +} + + +static u32 spd_detect_dimms(const struct mem_controller *ctrl) +{ + u32 dimm_mask; + int i; + dimm_mask = 0; + for(i = 0; i < DIMM_SOCKETS; i++) { + int byte; + u16 device; + device = ctrl->channel0[i]; + if (device) { + byte = spd_read_byte(device, 2); /* Type */ + if (byte == 8) { + dimm_mask |= (1 << i); + } + } + device = ctrl->channel1[i]; + if (device) { + byte = spd_read_byte(device, 2); + if (byte == 8) { + dimm_mask |= (1 << (i + DIMM_SOCKETS)); + } + } + } + return dimm_mask; +} + + +static int spd_set_row_attributes(const struct mem_controller *ctrl, + long dimm_mask) +{ + int value; + int reg; + int dra; + int cnt; + + dra = 0; + for(cnt=0; cnt < 4; cnt++) { + if (!(dimm_mask & (1 << cnt))) { + continue; + } + reg =0; + value = spd_read_byte(ctrl->channel0[cnt], 3); /* rows */ + if (value < 0) goto hw_err; + if ((value & 0xf) == 0) goto val_err; + reg += value & 0xf; + + value = spd_read_byte(ctrl->channel0[cnt], 4); /* columns */ + if (value < 0) goto hw_err; + if ((value & 0xf) == 0) goto val_err; + reg += value & 0xf; + + value = spd_read_byte(ctrl->channel0[cnt], 17); /* banks */ + if (value < 0) goto hw_err; + if ((value & 0xff) == 0) goto val_err; + reg += log2(value & 0xff); + + /* Get the device width and convert it to a power of two */ + value = spd_read_byte(ctrl->channel0[cnt], 13); + if (value < 0) goto hw_err; + value = log2(value & 0xff); + reg += value; + if(reg < 27) goto hw_err; + reg -= 27; + reg += (value << 2); + + dra += reg << (cnt*8); + value = spd_read_byte(ctrl->channel0[cnt], 5); + if (value & 2) + dra += reg << ((cnt*8)+4); + } + + /* 0x70 DRA */ + pci_write_config32(ctrl->f0, DRA, dra); + goto out; + + val_err: + die("Bad SPD value\r\n"); + /* If an hw_error occurs report that I have no memory */ + hw_err: + dra = 0; + out: + return dra; + +} + + +static int spd_set_drt_attributes(const struct mem_controller *ctrl, + long dimm_mask, u32 drc) +{ + int value; + int reg; + u32 drt; + int cnt; + int first_dimm; + int cas_latency=0; + int latency; + u32 index = 0; + u32 index2 = 0; + static const u8 cycle_time[3] = { 0x75, 0x60, 0x50 }; + static const u8 latency_indicies[] = { 26, 23, 9 }; + + /* 0x78 DRT */ + drt = pci_read_config32(ctrl->f0, DRT); + drt &= 3; /* save bits 1:0 */ + + for(first_dimm = 0; first_dimm < 4; first_dimm++) { + if (dimm_mask & (1 << first_dimm)) + break; + } + + drt |= (1<<6); /* back to back write turn around */ + + drt |= (3<<18); /* Trasmax */ + + for(cnt=0; cnt < 4; cnt++) { + if (!(dimm_mask & (1 << cnt))) { + continue; + } + reg = spd_read_byte(ctrl->channel0[cnt], 18); /* CAS Latency */ + /* Compute the lowest cas latency supported */ + latency = log2(reg) -2; + + /* Loop through and find a fast clock with a low latency */ + for(index = 0; index < 3; index++, latency++) { + if ((latency < 2) || (latency > 4) || + (!(reg & (1 << latency)))) { + continue; + } + value = spd_read_byte(ctrl->channel0[cnt], + latency_indicies[index]); + + if(value <= cycle_time[drc&3]) { + if( latency > cas_latency) { + cas_latency = latency; + } + break; + } + } + } + index = (cas_latency-2); + if((index)==0) cas_latency = 20; + else if((index)==1) cas_latency = 25; + else cas_latency = 30; + + for(cnt=0;cnt<4;cnt++) { + if (!(dimm_mask & (1 << cnt))) { + continue; + } + reg = spd_read_byte(ctrl->channel0[cnt], 27)&0x0ff; + if(((index>>8)&0x0ff)<reg) { + index &= ~(0x0ff << 8); + index |= (reg << 8); + } + reg = spd_read_byte(ctrl->channel0[cnt], 28)&0x0ff; + if(((index>>16)&0x0ff)<reg) { + index &= ~(0x0ff << 16); + index |= (reg<<16); + } + reg = spd_read_byte(ctrl->channel0[cnt], 29)&0x0ff; + if(((index2>>0)&0x0ff)<reg) { + index2 &= ~(0x0ff << 0); + index2 |= (reg<<0); + } + reg = spd_read_byte(ctrl->channel0[cnt], 41)&0x0ff; + if(((index2>>8)&0x0ff)<reg) { + index2 &= ~(0x0ff << 8); + index2 |= (reg<<8); + } + reg = spd_read_byte(ctrl->channel0[cnt], 42)&0x0ff; + if(((index2>>16)&0x0ff)<reg) { + index2 &= ~(0x0ff << 16); + index2 |= (reg<<16); + } + } + + /* get dimm speed */ + value = cycle_time[drc&3]; + if(value <= 0x50) { /* 200 MHz */ + if((index&7) > 2) { + drt |= (2<<2); /* CAS latency 4 */ + cas_latency = 40; + } else { + drt |= (1<<2); /* CAS latency 3 */ + cas_latency = 30; + } + if((index&0x0ff00)<=0x03c00) { + drt |= (1<<8); /* Trp RAS Precharg */ + } else { + drt |= (2<<8); /* Trp RAS Precharg */ + } + + /* Trcd RAS to CAS delay */ + if((index2&0x0ff)<=0x03c) { + drt |= (0<<10); + } else { + drt |= (1<<10); + } + + /* Tdal Write auto precharge recovery delay */ + drt |= (1<<12); + + /* Trc TRS min */ + if((index2&0x0ff00)<=0x03700) + drt |= (0<<14); + else if((index2&0xff00)<=0x03c00) + drt |= (1<<14); + else + drt |= (2<<14); /* spd 41 */ + + drt |= (2<<16); /* Twr not defined for DDR docs say use 2 */ + + /* Trrd Row Delay */ + if((index&0x0ff0000)<=0x0140000) { + drt |= (0<<20); + } else if((index&0x0ff0000)<=0x0280000) { + drt |= (1<<20); + } else if((index&0x0ff0000)<=0x03c0000) { + drt |= (2<<20); + } else { + drt |= (3<<20); + } + + /* Trfc Auto refresh cycle time */ + if((index2&0x0ff0000)<=0x04b0000) { + drt |= (0<<22); + } else if((index2&0x0ff0000)<=0x0690000) { + drt |= (1<<22); + } else { + drt |= (2<<22); + } + /* Docs say use 55 for all 200Mhz */ + drt |= (0x055<<24); + } + else if(value <= 0x60) { /* 167 Mhz */ + /* according to new documentation CAS latency is 00 + * for bits 3:2 for all 167 Mhz + drt |= ((index&3)<<2); */ /* set CAS latency */ + if((index&0x0ff00)<=0x03000) { + drt |= (1<<8); /* Trp RAS Precharg */ + } else { + drt |= (2<<8); /* Trp RAS Precharg */ + } + + /* Trcd RAS to CAS delay */ + if((index2&0x0ff)<=0x030) { + drt |= (0<<10); + } else { + drt |= (1<<10); + } + + /* Tdal Write auto precharge recovery delay */ + drt |= (2<<12); + + /* Trc TRS min */ + drt |= (2<<14); /* spd 41, but only one choice */ + + drt |= (2<<16); /* Twr not defined for DDR docs say 2 */ + + /* Trrd Row Delay */ + if((index&0x0ff0000)<=0x0180000) { + drt |= (0<<20); + } else if((index&0x0ff0000)<=0x0300000) { + drt |= (1<<20); + } else { + drt |= (2<<20); + } + + /* Trfc Auto refresh cycle time */ + if((index2&0x0ff0000)<=0x0480000) { + drt |= (0<<22); + } else if((index2&0x0ff0000)<=0x0780000) { + drt |= (2<<22); + } else { + drt |= (2<<22); + } + /* Docs state to use 99 for all 167 Mhz */ + drt |= (0x099<<24); + } + else if(value <= 0x75) { /* 133 Mhz */ + drt |= ((index&3)<<2); /* set CAS latency */ + if((index&0x0ff00)<=0x03c00) { + drt |= (1<<8); /* Trp RAS Precharg */ + } else { + drt |= (2<<8); /* Trp RAS Precharg */ + } + + /* Trcd RAS to CAS delay */ + if((index2&0x0ff)<=0x03c) { + drt |= (0<<10); + } else { + drt |= (1<<10); + } + + /* Tdal Write auto precharge recovery delay */ + drt |= (1<<12); + + /* Trc TRS min */ + drt |= (2<<14); /* spd 41, but only one choice */ + + drt |= (1<<16); /* Twr not defined for DDR docs say 1 */ + + /* Trrd Row Delay */ + if((index&0x0ff0000)<=0x01e0000) { + drt |= (0<<20); + } else if((index&0x0ff0000)<=0x03c0000) { + drt |= (1<<20); + } else { + drt |= (2<<20); + } + + /* Trfc Auto refresh cycle time */ + if((index2&0x0ff0000)<=0x04b0000) { + drt |= (0<<22); + } else if((index2&0x0ff0000)<=0x0780000) { + drt |= (2<<22); + } else { + drt |= (2<<22); + } + + /* Based on CAS latency */ + if(index&7) + drt |= (0x099<<24); + else + drt |= (0x055<<24); + + } + else { + die("Invalid SPD 9 bus speed.\r\n"); + } + + /* 0x78 DRT */ + pci_write_config32(ctrl->f0, DRT, drt); + + return(cas_latency); +} + +static int spd_set_dram_controller_mode(const struct mem_controller *ctrl, + long dimm_mask) +{ + int value; + int drc; + int cnt; + msr_t msr; + u8 rate = 62; + static const u8 spd_rates[6] = {15,3,7,7,62,62}; + static const u8 drc_rates[5] = {0,15,7,62,3}; + static const u8 fsb_conversion[8] = {0,1,3,2,3,0,3,3}; + + /* 0x7c DRC */ + drc = pci_read_config32(ctrl->f0, DRC); + for(cnt=0; cnt < 4; cnt++) { + if (!(dimm_mask & (1 << cnt))) { + continue; + } + value = spd_read_byte(ctrl->channel0[cnt], 11); /* ECC */ + if (value != 2) die("ERROR - Non ECC memory dimm\r\n"); + + value = spd_read_byte(ctrl->channel0[cnt], 12); /*refresh rate*/ + value &= 0x0f; /* clip self refresh bit */ + if (value > 5) goto hw_err; + if (rate > spd_rates[value]) + rate = spd_rates[value]; + + value = spd_read_byte(ctrl->channel0[cnt], 9); /* cycle time */ + if (value > 0x75) goto hw_err; + } + drc |= (1 << 20); /* enable ECC */ + for (cnt = 1; cnt < 5; cnt++) + if (drc_rates[cnt] == rate) + break; + if (cnt < 5) { + drc &= ~(7 << 8); /* clear the rate bits */ + drc |= (cnt << 8); + } + + drc |= (1 << 26); /* set the overlap bit - the factory BIOS does */ + drc |= (1 << 27); /* set DED retry enable - the factory BIOS does */ + drc |= (1 << 7); + drc &= ~(1 << 5); /* enable ODT */ + drc |= (1 << 4); /* independent clocks */ + + /* set front side bus speed */ + msr = rdmsr(0xcd); /* returns 0 on Pentium M 90nm */ + value = msr.lo & 0x07; + drc &= ~(3 << 2); + drc |= (fsb_conversion[value] << 2); + + /* set dram type to ddr2 */ + drc &= ~(3 << 0); + drc |= (2 << 0); + + goto out; + + val_err: + die("Bad SPD value\r\n"); + /* If an hw_error occurs report that I have no memory */ + hw_err: + drc = 0; + out: + return drc; +} + +static void sdram_set_spd_registers(const struct mem_controller *ctrl) +{ + long dimm_mask; + + /* Test if we can read the spd and if ram is ddr or ddr2 */ + dimm_mask = spd_detect_dimms(ctrl); + if (!(dimm_mask & ((1 << DIMM_SOCKETS) - 1))) { + print_err("No memory for this cpu\r\n"); + return; + } + return; +} + +static void do_delay(void) +{ + int i; + u8 b; + for(i=0;i<16;i++) + b=inb(0x80); +} + +#define TIMEOUT_LOOPS 300000 + +#define DCALCSR 0x100 +#define DCALADDR 0x104 +#define DCALDATA 0x108 + +static void set_on_dimm_termination_enable(const struct mem_controller *ctrl) +{ + u8 c1,c2; + u32 dimm,i; + u32 data32; + u32 t4; + + /* Set up northbridge values */ + /* ODT enable */ + pci_write_config32(ctrl->f0, SDRC, 0x30000000); + /* Figure out which slots are Empty, Single, or Double sided */ + for(i=0,t4=0,c2=0;i<8;i+=2) { + c1 = pci_read_config8(ctrl->f0, DRB+i); + if(c1 == c2) continue; + c2 = pci_read_config8(ctrl->f0, DRB+1+i); + if(c1 == c2) + t4 |= (1 << (i*4)); + else + t4 |= (2 << (i*4)); + } + for(i=0;i<1;i++) { + if((t4&0x0f) == 1) { + if( ((t4>>8)&0x0f) == 0 ) { + data32 = 0x00000010; /* EEES */ + break; + } + if ( ((t4>>16)&0x0f) == 0 ) { + data32 = 0x00003132; /* EESS */ + break; + } + if ( ((t4>>24)&0x0f) == 0 ) { + data32 = 0x00335566; /* ESSS */ + break; + } + data32 = 0x77bbddee; /* SSSS */ + break; + } + if((t4&0x0f) == 2) { + if( ((t4>>8)&0x0f) == 0 ) { + data32 = 0x00003132; /* EEED */ + break; + } + if ( ((t4>>8)&0x0f) == 2 ) { + data32 = 0xb373ecdc; /* EEDD */ + break; + } + if ( ((t4>>16)&0x0f) == 0 ) { + data32 = 0x00b3a898; /* EESD */ + break; + } + data32 = 0x777becdc; /* ESSD */ + break; + } + die("Error - First dimm slot empty\r\n"); + } + + print_debug("ODT Value = "); + print_debug_hex32(data32); + print_debug("\r\n"); + + pci_write_config32(ctrl->f0, DDR2ODTC, data32); + + for(dimm=0;dimm<8;dimm+=2) { + + write32(MCBAR+DCALADDR, 0x0b840001); + write32(MCBAR+DCALCSR, 0x81000003 | (dimm << 20)); + + for(i=0;i<1001;i++) { + data32 = read32(MCBAR+DCALCSR); + if(!(data32 & (1<<31))) + break; + } + } +} +static void set_receive_enable(const struct mem_controller *ctrl) +{ + u32 i; + u32 cnt; + u32 recena=0; + u32 recenb=0; + + { + u32 dimm; + u32 edge; + int32_t data32; + u32 data32_dram; + u32 dcal_data32_0; + u32 dcal_data32_1; + u32 dcal_data32_2; + u32 dcal_data32_3; + u32 work32l; + u32 work32h; + u32 data32r; + int32_t recen; + for(dimm=0;dimm<8;dimm+=1) { + + if(!(dimm&1)) { + write32(MCBAR+DCALDATA+(17*4), 0x04020000); + write32(MCBAR+DCALCSR, 0x81800004 | (dimm << 20)); + + for(i=0;i<1001;i++) { + data32 = read32(MCBAR+DCALCSR); + if(!(data32 & (1<<31))) + break; + } + if(i>=1000) + continue; + + dcal_data32_0 = read32(MCBAR+DCALDATA + 0); + dcal_data32_1 = read32(MCBAR+DCALDATA + 4); + dcal_data32_2 = read32(MCBAR+DCALDATA + 8); + dcal_data32_3 = read32(MCBAR+DCALDATA + 12); + } + else { + dcal_data32_0 = read32(MCBAR+DCALDATA + 16); + dcal_data32_1 = read32(MCBAR+DCALDATA + 20); + dcal_data32_2 = read32(MCBAR+DCALDATA + 24); + dcal_data32_3 = read32(MCBAR+DCALDATA + 28); + } + + /* check if bank is installed */ + if((dcal_data32_0 == 0) && (dcal_data32_2 == 0)) + continue; + /* Calculate the timing value */ + { + u32 bit; + for(i=0,edge=0,bit=63,cnt=31,data32r=0, + work32l=dcal_data32_1,work32h=dcal_data32_3; + (i<4) && bit; i++) { + for(;;bit--,cnt--) { + if(work32l & (1<<cnt)) + break; + if(!cnt) { + work32l = dcal_data32_0; + work32h = dcal_data32_2; + cnt = 32; + } + if(!bit) break; + } + for(;;bit--,cnt--) { + if(!(work32l & (1<<cnt))) + break; + if(!cnt) { + work32l = dcal_data32_0; + work32h = dcal_data32_2; + cnt = 32; + } + if(!bit) break; + } + if(!bit) { + break; + } + data32 = ((bit%8) << 1); + if(work32h & (1<<cnt)) + data32 += 1; + if(data32 < 4) { + if(!edge) { + edge = 1; + } + else { + if(edge != 1) { + data32 = 0x0f; + } + } + } + if(data32 > 12) { + if(!edge) { + edge = 2; + } + else { + if(edge != 2) { + data32 = 0x00; + } + } + } + data32r += data32; + } + } + work32l = dcal_data32_0; + work32h = dcal_data32_2; + recen = data32r; + recen += 3; + recen = recen>>2; + for(cnt=5;cnt<24;) { + for(;;cnt++) + if(!(work32l & (1<<cnt))) + break; + for(;;cnt++) { + if(work32l & (1<<cnt)) + break; + } + data32 = (((cnt-1)%8)<<1); + if(work32h & (1<<(cnt-1))) { + data32++; + } + /* test for frame edge cross overs */ + if((edge == 1) && (data32 > 12) && + (((recen+16)-data32) < 3)) { + data32 = 0; + cnt += 2; + } + if((edge == 2) && (data32 < 4) && + ((recen - data32) > 12)) { + data32 = 0x0f; + cnt -= 2; + } + if(((recen+3) >= data32) && ((recen-3) <= data32)) + break; + } + cnt--; + cnt /= 8; + cnt--; + if(recen&1) + recen+=2; + recen >>= 1; + recen += (cnt*8); + recen+=2; /* this is not in the spec, but matches + the factory output, and has less failure */ + recen <<= (dimm/2) * 8; + if(!(dimm&1)) { + recena |= recen; + } + else { + recenb |= recen; + } + } + } + /* Check for Eratta problem */ + for(i=cnt=0;i<32;i+=8) { + if (((recena>>i)&0x0f)>7) { + cnt+= 0x101; + } + else { + if((recena>>i)&0x0f) { + cnt++; + } + } + } + if(cnt&0x0f00) { + cnt = (cnt&0x0f) - (cnt>>16); + if(cnt>1) { + for(i=0;i<32;i+=8) { + if(((recena>>i)&0x0f)>7) { + recena &= ~(0x0f<<i); + recena |= (7<<i); + } + } + } + else { + for(i=0;i<32;i+=8) { + if(((recena>>i)&0x0f)<8) { + recena &= ~(0x0f<<i); + recena |= (8<<i); + } + } + } + } + for(i=cnt=0;i<32;i+=8) { + if (((recenb>>i)&0x0f)>7) { + cnt+= 0x101; + } + else { + if((recenb>>i)&0x0f) { + cnt++; + } + } + } + if(cnt & 0x0f00) { + cnt = (cnt&0x0f) - (cnt>>16); + if(cnt>1) { + for(i=0;i<32;i+=8) { + if(((recenb>>i)&0x0f)>7) { + recenb &= ~(0x0f<<i); + recenb |= (7<<i); + } + } + } + else { + for(i=0;i<32;i+=8) { + if(((recenb>>8)&0x0f)<8) { + recenb &= ~(0x0f<<i); + recenb |= (8<<i); + } + } + } + } + + print_debug("Receive enable A = "); + print_debug_hex32(recena); + print_debug(", Receive enable B = "); + print_debug_hex32(recenb); + print_debug("\r\n"); + + /* clear out the calibration area */ + write32(MCBAR+DCALDATA+(16*4), 0x00000000); + write32(MCBAR+DCALDATA+(17*4), 0x00000000); + write32(MCBAR+DCALDATA+(18*4), 0x00000000); + write32(MCBAR+DCALDATA+(19*4), 0x00000000); + + /* No command */ + write32(MCBAR+DCALCSR, 0x0000000f); + + write32(MCBAR+0x150, recena); + write32(MCBAR+0x154, recenb); +} + + +static void sdram_enable(int controllers, const struct mem_controller *ctrl) +{ + int i; + int cs; + int cnt; + int cas_latency; + long mask; + u32 drc; + u32 data32; + u32 mode_reg; + u32 *iptr; + volatile u32 *iptrv; + msr_t msr; + u32 scratch; + u8 byte; + u16 data16; + static const struct { + u32 clkgr[4]; + } gearing [] = { + /* FSB 100 */ + {{ 0x00000010, 0x00000000, 0x00000002, 0x00000001}}, + /* FSB 133 */ + {{ 0x00000120, 0x00000000, 0x00000032, 0x00000010}}, + /* FSB 167 */ + {{ 0x00154320, 0x00000000, 0x00065432, 0x00010000}}, + /* N/A */ + {{ 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff}}, + }; + + static const u32 dqs_data[] = { + 0xffffffff, 0xffffffff, 0x000000ff, + 0xffffffff, 0xffffffff, 0x000000ff, + 0xffffffff, 0xffffffff, 0x000000ff, + 0xffffffff, 0xffffffff, 0x000000ff, + 0xffffffff, 0xffffffff, 0x000000ff, + 0xffffffff, 0xffffffff, 0x000000ff, + 0xffffffff, 0xffffffff, 0x000000ff, + 0xffffffff, 0xffffffff, 0x000000ff}; + + mask = spd_detect_dimms(ctrl); + print_debug("Starting SDRAM Enable\r\n"); + + /* 0x80 */ +#ifdef DIMM_MAP_LOGICAL + pci_write_config32(ctrl->f0, DRM, + 0x00410000 | DIMM_MAP_LOGICAL); +#else + pci_write_config32(ctrl->f0, DRM, 0x00411248); +#endif + /* set dram type and Front Side Bus freq. */ + drc = spd_set_dram_controller_mode(ctrl, mask); + if( drc == 0) { + die("Error calculating DRC\r\n"); + } + data32 = drc & ~(3 << 20); /* clear ECC mode */ + data32 = data32 & ~(7 << 8); /* clear refresh rates */ + data32 = data32 | (1 << 5); /* temp turn off ODT */ + /* Set gearing, then dram controller mode */ + /* drc bits 3:2 = FSB speed */ + for(iptr = gearing[(drc>>2)&3].clkgr,cnt=0;cnt<4;cnt++) { + pci_write_config32(ctrl->f0, 0xa0+(cnt*4), iptr[cnt]); + } + /* 0x7c DRC */ + pci_write_config32(ctrl->f0, DRC, data32); + + /* turn the clocks on */ + /* 0x8c CKDIS */ + pci_write_config16(ctrl->f0, CKDIS, 0x0000); + + /* 0x9a DDRCSR Take subsystem out of idle */ + data16 = pci_read_config16(ctrl->f0, DDRCSR); + data16 &= ~(7 << 12); + data16 |= (1 << 12); + pci_write_config16(ctrl->f0, DDRCSR, data16); + + /* program row size DRB */ + spd_set_ram_size(ctrl, mask); + + /* program page size DRA */ + spd_set_row_attributes(ctrl, mask); + + /* program DRT timing values */ + cas_latency = spd_set_drt_attributes(ctrl, mask, drc); + + for(i=0;i<8;i+=2) { /* loop through each dimm to test */ + print_debug("DIMM "); + print_debug_hex8(i); + print_debug("\r\n"); + /* Apply NOP */ + do_delay(); + + write32(MCBAR+DCALCSR, (0x01000000 | (i<<20))); + write32(MCBAR+DCALCSR, (0x81000000 | (i<<20))); + + data32 = read32(MCBAR+DCALCSR); + while(data32 & 0x80000000) + data32 = read32(MCBAR+DCALCSR); + } + + /* Apply NOP */ + do_delay(); + + for(cs=0;cs<8;cs+=2) { + write32(MCBAR + DCALCSR, (0x81000000 | (cs<<20))); + data32 = read32(MCBAR+DCALCSR); + while(data32 & 0x80000000) + data32 = read32(MCBAR+DCALCSR); + } + + /* Precharg all banks */ + do_delay(); + for(cs=0;cs<8;cs+=2) { + write32(MCBAR+DCALADDR, 0x04000000); + write32(MCBAR+DCALCSR, (0x81000002 | (cs<<20))); + data32 = read32(MCBAR+DCALCSR); + while(data32 & 0x80000000) + data32 = read32(MCBAR+DCALCSR); + } + + /* EMRS dll's enabled */ + do_delay(); + for(cs=0;cs<8;cs+=2) { + /* fixme hard code AL additive latency */ + write32(MCBAR+DCALADDR, 0x0b940001); + write32(MCBAR+DCALCSR, (0x81000003 | (cs<<20))); + data32 = read32(MCBAR+DCALCSR); + while(data32 & 0x80000000) + data32 = read32(MCBAR+DCALCSR); + } + /* MRS reset dll's */ + do_delay(); + if(cas_latency == 30) + mode_reg = 0x053a0000; + else + mode_reg = 0x054a0000; + for(cs=0;cs<8;cs+=2) { + write32(MCBAR+DCALADDR, mode_reg); + write32(MCBAR+DCALCSR, (0x81000003 | (cs<<20))); + data32 = read32(MCBAR+DCALCSR); + while(data32 & 0x80000000) + data32 = read32(MCBAR+DCALCSR); + } + + /* Precharg all banks */ + do_delay(); + do_delay(); + do_delay(); + for(cs=0;cs<8;cs+=2) { + write32(MCBAR+DCALADDR, 0x04000000); + write32(MCBAR+DCALCSR, (0x81000002 | (cs<<20))); + data32 = read32(MCBAR+DCALCSR); + while(data32 & 0x80000000) + data32 = read32(MCBAR+DCALCSR); + } + + /* Do 2 refreshes */ + do_delay(); + for(cs=0;cs<8;cs+=2) { + write32(MCBAR+DCALCSR, (0x81000001 | (cs<<20))); + data32 = read32(MCBAR+DCALCSR); + while(data32 & 0x80000000) + data32 = read32(MCBAR+DCALCSR); + } + do_delay(); + for(cs=0;cs<8;cs+=2) { + write32(MCBAR+DCALCSR, (0x81000001 | (cs<<20))); + data32 = read32(MCBAR+DCALCSR); + while(data32 & 0x80000000) + data32 = read32(MCBAR+DCALCSR); + } + do_delay(); + /* for good luck do 6 more */ + for(cs=0;cs<8;cs+=2) { + write32(MCBAR+DCALCSR, (0x81000001 | (cs<<20))); + } + do_delay(); + for(cs=0;cs<8;cs+=2) { + write32(MCBAR+DCALCSR, (0x81000001 | (cs<<20))); + } + do_delay(); + for(cs=0;cs<8;cs+=2) { + write32(MCBAR+DCALCSR, (0x81000001 | (cs<<20))); + } + do_delay(); + for(cs=0;cs<8;cs+=2) { + write32(MCBAR+DCALCSR, (0x81000001 | (cs<<20))); + } + do_delay(); + for(cs=0;cs<8;cs+=2) { + write32(MCBAR+DCALCSR, (0x81000001 | (cs<<20))); + } + do_delay(); + for(cs=0;cs<8;cs+=2) { + write32(MCBAR+DCALCSR, (0x81000001 | (cs<<20))); + } + do_delay(); + /* MRS reset dll's normal */ + do_delay(); + for(cs=0;cs<8;cs+=2) { + write32(MCBAR+DCALADDR, (mode_reg & ~(1<<24))); + write32(MCBAR+DCALCSR, (0x81000003 | (cs<<20))); + data32 = read32(MCBAR+DCALCSR); + while(data32 & 0x80000000) + data32 = read32(MCBAR+DCALCSR); + } + + /* Do only if DDR2 EMRS dll's enabled */ + do_delay(); + for(cs=0;cs<8;cs+=2) { + write32(MCBAR+DCALADDR, (0x0b940001)); + write32(MCBAR+DCALCSR, (0x81000003 | (cs<<20))); + data32 = read32(MCBAR+DCALCSR); + while(data32 & 0x80000000) + data32 = read32(MCBAR+DCALCSR); + } + + do_delay(); + /* No command */ + write32(MCBAR+DCALCSR, 0x0000000f); + + /* enable on dimm termination */ + set_on_dimm_termination_enable(ctrl); + + /* receive enable calibration */ + set_receive_enable(ctrl); + + /* DQS */ + pci_write_config32(ctrl->f0, 0x94, 0x3904aa00); + for(i = 0, cnt = (MCBAR+0x200); i < 24; i++, cnt+=4) { + write32(cnt, dqs_data[i]); + } + pci_write_config32(ctrl->f0, 0x94, 0x3900aa00); + + /* Enable refresh */ + /* 0x7c DRC */ + data32 = drc & ~(3 << 20); /* clear ECC mode */ + pci_write_config32(ctrl->f0, DRC, data32); + write32(MCBAR+DCALCSR, 0x0008000f); + + /* clear memory and init ECC */ + print_debug("Clearing memory\r\n"); + for(i=0;i<64;i+=4) { + write32(MCBAR+DCALDATA+i, 0x00000000); + } + + for(cs=0;cs<8;cs+=2) { + write32(MCBAR+DCALCSR, (0x810831d8 | (cs<<20))); + data32 = read32(MCBAR+DCALCSR); + while(data32 & 0x80000000) + data32 = read32(MCBAR+DCALCSR); + } + + /* Bring memory subsystem on line */ + data32 = pci_read_config32(ctrl->f0, 0x98); + data32 |= (1 << 31); + pci_write_config32(ctrl->f0, 0x98, data32); + /* wait for completion */ + print_debug("Waiting for mem complete\r\n"); + while(1) { + data32 = pci_read_config32(ctrl->f0, 0x98); + if( (data32 & (1<<31)) == 0) + break; + } + print_debug("Done\r\n"); + + /* Set initialization complete */ + /* 0x7c DRC */ + drc |= (1 << 29); + data32 = drc & ~(3 << 20); /* clear ECC mode */ + pci_write_config32(ctrl->f0, DRC, data32); + + /* Set the ecc mode */ + pci_write_config32(ctrl->f0, DRC, drc); + + /* Enable memory scrubbing */ + /* 0x52 MCHSCRB */ + data16 = pci_read_config16(ctrl->f0, MCHSCRB); + data16 &= ~0x0f; + data16 |= ((2 << 2) | (2 << 0)); + pci_write_config16(ctrl->f0, MCHSCRB, data16); + + /* The memory is now setup, use it */ + cache_lbmem(MTRR_TYPE_WRBACK); +}
Added: trunk/coreboot-v2/src/northbridge/intel/i3100/raminit.h =================================================================== --- trunk/coreboot-v2/src/northbridge/intel/i3100/raminit.h (rev 0) +++ trunk/coreboot-v2/src/northbridge/intel/i3100/raminit.h 2008-03-16 23:36:00 UTC (rev 3158) @@ -0,0 +1,34 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2008 Arastra, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * 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 code is based on src/northbridge/intel/e7520/raminit.h */ + +#ifndef NORTHBRIDGE_INTEL_I3100_RAMINIT_H +#define NORTHBRIDGE_INTEL_I3100_RAMINIT_H + +#define DIMM_SOCKETS 4 +struct mem_controller { + u32 node_id; + device_t f0, f1, f2, f3; + u16 channel0[DIMM_SOCKETS]; + u16 channel1[DIMM_SOCKETS]; +}; + +#endif