Author: myles Date: 2009-11-05 21:02:35 +0000 (Thu, 05 Nov 2009) New Revision: 4919
Added: trunk/src/northbridge/amd/amdk8/util.c Modified: trunk/src/northbridge/amd/amdk8/Makefile.inc trunk/src/northbridge/amd/amdk8/amdk8.h Log: Add debugging utility file for dumping routing registers on K8.
Ported from Ron's code in v3.
Signed-off-by: Myles Watson mylesgw@gmail.com Acked-by: Ronald G. Minnich rminnich@gmail.com
Modified: trunk/src/northbridge/amd/amdk8/Makefile.inc =================================================================== --- trunk/src/northbridge/amd/amdk8/Makefile.inc 2009-11-05 20:06:19 UTC (rev 4918) +++ trunk/src/northbridge/amd/amdk8/Makefile.inc 2009-11-05 21:02:35 UTC (rev 4919) @@ -3,6 +3,10 @@ obj-y += get_sblk_pci1234.o obj-$(CONFIG_GENERATE_ACPI_TABLES) += amdk8_acpi.o
+# Enable this if you want to check the values of the PCI routing registers. +# Call show_all_routes() anywhere amdk8.h is included. +#obj-y += util.o + # Not sure what to do with these yet. How did raminit_test even work? # Should be a target in -y form. #if CONFIG_K8_REV_F_SUPPORT
Modified: trunk/src/northbridge/amd/amdk8/amdk8.h =================================================================== --- trunk/src/northbridge/amd/amdk8/amdk8.h 2009-11-05 20:06:19 UTC (rev 4918) +++ trunk/src/northbridge/amd/amdk8/amdk8.h 2009-11-05 21:02:35 UTC (rev 4919) @@ -8,4 +8,6 @@ #include "amdk8_pre_f.h" #endif
+void showallroutes(int level, device_t dev); + #endif /* AMDK8_H */
Added: trunk/src/northbridge/amd/amdk8/util.c =================================================================== --- trunk/src/northbridge/amd/amdk8/util.c (rev 0) +++ trunk/src/northbridge/amd/amdk8/util.c 2009-11-05 21:02:35 UTC (rev 4919) @@ -0,0 +1,275 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2008 Vincent Legoll vincent.legoll@gmail.com + * Copyright (C) 2008 Ronald G. Minnich rminnich@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; version 2 of the License. + * + * 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 + */ + +/* + * K8 northbridge utilities (dump routing registers). + * Designed to be called at any time. + * It can be called before RAM is set up by including this file. + * It can be called after RAM is set up by including amdk8.h and enabling the + * compilation of this file in src/northbridge/amd/amdk8/Makefile.inc. + */ +#ifndef __ROMCC__ +#include <console/console.h> +#include <string.h> +#include <device/pci.h> +#include <cpu/amd/amdk8_sysconf.h> +#include <device/pci_ops.h> +#include "amdk8.h" +#endif + +/* Function 1 */ +/* the DRAM, MMIO,and PCIIO routing are 64-bit registers, hence the ending at + * 0x78, 0xb8, and 0xd8 + */ +#define DRAM_ROUTE_START 0x40 +#define DRAM_ROUTE_END 0x78 +#define MMIO_ROUTE_START 0x80 +#define MMIO_ROUTE_END 0xb8 +#define PCIIO_ROUTE_START 0xc0 +#define PCIIO_ROUTE_END 0xd8 +#define CONFIG_ROUTE_START 0xe0 +#define CONFIG_ROUTE_END 0xec + +#define PCI_IO_BASE0 0xc0 +#define PCI_IO_BASE1 0xc8 +#define PCI_IO_BASE2 0xd0 +#define PCI_IO_BASE3 0xd8 +#define PCI_IO_BASE_VGA_EN (1 << 4) +#define PCI_IO_BASE_NO_ISA (1 << 5) + +#define BITS(r, shift, mask) (((r>>shift)&mask)) + +/** + * Return "R" if the register has read-enable bit set. + */ +static const char *re(u32 i) +{ + return ((i & 1) ? "R" : ""); +} + +/** + * Return "W" if the register has write-enable bit set. + */ +static const char *we(u32 i) +{ + return ((i & 1) ? "W" : ""); +} + +/** + * Return a string containing the interleave settings. + */ +static const char *ileave(u32 base) +{ + switch ((base >> 8) & 7) { + case 0: + return "No interleave"; + case 1: + return "2 nodes"; + case 3: + return "4 nodes"; + case 7: + return "8 nodes"; + default: + return "Reserved"; + } +} + +/** + * Return the node number. + * For one case (config registers) these are not the right bit fields. + */ +static int node(u32 reg) +{ + return BITS(reg, 0, 0x7); +} + +/** + * Return the link number. + * For one case (config registers) these are not the right bit fields. + */ +static int link(u32 reg) +{ + return BITS(reg, 4, 0x3); +} + +/** + * Print the DRAM routing info for one base/limit pair. + * + * Show base, limit, dest node, dest link on that node, read and write + * enable, and interleave information. + * + * @param level Printing level + * @param which Register number + * @param base Base register + * @param lim Limit register + */ +static void showdram(int level, u8 which, u32 base, u32 lim) +{ + do_printk(level, "DRAM(%02x)%010llx-%010llx, ->(%d), %s, %s, %s, %d\n", + which, (((u64) base & 0xffff0000) << 8), + (((u64) lim & 0xffff0000) << 8) + 0xffffff, + node(lim), re(base), we(base), ileave(base), (lim >> 8) & 3); +} + +/** + * Print the config routing info for a config register. + * + * Show base, limit, dest node, dest link on that node, read and write + * enable, and device number compare enable + * + * @param level Printing level + * @param which Register number + * @param reg Config register + */ +static void showconfig(int level, u8 which, u32 reg) +{ + /* Don't use node() and link() here. */ + do_printk(level, "CONFIG(%02x)%02x-%02x ->(%d,%d),%s %s (%s numbers)\n", + which, BITS(reg, 16, 0xff), BITS(reg, 24, 0xff), + BITS(reg, 4, 0x7), BITS(reg, 8, 0x3), + re(reg), we(reg), + BITS(reg, 2, 0x1)?"dev":"bus"); +} + +/** + * Print the PCIIO routing info for one base/limit pair. + * + * Show base, limit, dest node, dest link on that node, read and write + * enable, and VGA and ISA Enable. + * + * @param level Printing level + * @param which Register number + * @param base Base register + * @param lim Limit register + */ +static void showpciio(int level, u8 which, u32 base, u32 lim) +{ + do_printk(level, "PCIIO(%02x)%07x-%07x, ->(%d,%d), %s, %s,VGA %d ISA %d\n", + which, BITS(base, 12, 0x3fff) << 12, + (BITS(lim, 12, 0x3fff) << 12) + 0xfff, node(lim), link(lim), + re(base), we(base), BITS(base, 4, 0x1), BITS(base, 5, 0x1)); +} + +/** + * Print the MMIO routing info for one base/limit pair. + * + * Show base, limit, dest node, dest link on that node, read and write + * enable, and CPU Disable, Lock, and Non-posted. + * + * @param level Printing level + * @param which Register number + * @param base Base register + * @param lim Limit register + */ +static void showmmio(int level, u8 which, u32 base, u32 lim) +{ + do_printk(level, "MMIO(%02x)%010llx-%010llx, ->(%d,%d), %s, %s, " + "CPU disable %d, Lock %d, Non posted %d\n", + which, ((u64) BITS(base, 0, 0xffffff00)) << 8, + (((u64) BITS(lim, 0, 0xffffff00)) << 8) + 0xffff, node(lim), + link(lim), re(base), we(base), BITS(base, 4, 0x1), + BITS(base, 7, 0x1), BITS(lim, 7, 0x1)); +} + +/** + * Show all DRAM routing registers. This function is callable at any time. + * + * @param level The debug level. + * @param dev A 32-bit number in the standard bus/dev/fn format which is used + * raw config space. + */ +static void showalldram(int level, device_t dev) +{ + u8 reg; + for (reg = DRAM_ROUTE_START; reg <= DRAM_ROUTE_END; reg += 8) { + u32 base = pci_read_config32(dev, reg); + u32 lim = pci_read_config32(dev, reg + 4); + if (base || lim!=(reg-DRAM_ROUTE_START)/8) + showdram(level, reg, base, lim); + } +} + +/** + * Show all MMIO routing registers. This function is callable at any time. + * + * @param level The debug level. + * @param dev A 32-bit number in the standard bus/dev/fn format which is used + * raw config space. + */ +static void showallmmio(int level, device_t dev) +{ + u8 reg; + for (reg = MMIO_ROUTE_START; reg <= MMIO_ROUTE_END; reg += 8) { + u32 base = pci_read_config32(dev, reg); + u32 lim = pci_read_config32(dev, reg + 4); + if (base || lim) + showmmio(level, reg, base, lim); + } +} + +/** + * Show all PCIIO routing registers. This function is callable at any time. + * + * @param level The debug level. + * @param dev A 32-bit number in the standard bus/dev/fn format which is used + * raw config space. + */ +static void showallpciio(int level, device_t dev) +{ + u8 reg; + for (reg = PCIIO_ROUTE_START; reg <= PCIIO_ROUTE_END; reg += 8) { + u32 base = pci_read_config32(dev, reg); + u32 lim = pci_read_config32(dev, reg + 4); + if (base || lim) + showpciio(level, reg, base, lim); + } +} + +/** + * Show all config routing registers. This function is callable at any time. + * + * @param level The debug level. + * @param dev A 32-bit number in the standard bus/dev/fn format which is used + * raw config space. + */ +static void showallconfig(int level, device_t dev) +{ + u8 reg; + for (reg = CONFIG_ROUTE_START; reg <= CONFIG_ROUTE_END; reg += 4) { + u32 val = pci_read_config32(dev, reg); + if (val) + showconfig(level, reg, val); + } +} + +/** + * Show all routing registers. This function is callable at any time. + * + * @param level The debug level. + * @param dev A 32-bit number in the standard bus/dev/fn format which is used + * raw config space. + */ +void showallroutes(int level, device_t dev) +{ + showalldram(level, dev); + showallmmio(level, dev); + showallpciio(level, dev); + showallconfig(level, dev); +}