diff options
Diffstat (limited to 'src/mainboard/asus/p2b/auto.c')
| -rw-r--r-- | src/mainboard/asus/p2b/auto.c | 143 |
1 files changed, 54 insertions, 89 deletions
diff --git a/src/mainboard/asus/p2b/auto.c b/src/mainboard/asus/p2b/auto.c index 317a949537..f5c6a2f1d7 100644 --- a/src/mainboard/asus/p2b/auto.c +++ b/src/mainboard/asus/p2b/auto.c @@ -1,3 +1,23 @@ +/* + * This file is part of the LinuxBIOS project. + * + * Copyright (C) 2007 Uwe Hermann <uwe@hermann-uwe.de> + * + * 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> @@ -17,8 +37,6 @@ #define SERIAL_DEV PNP_DEV(0x3f0, W83977TF_SP1) -/* - */ void udelay(int usecs) { int i; @@ -29,82 +47,41 @@ void udelay(int usecs) #include "debug.c" #include "lib/delay.c" - -static void memreset_setup(void) -{ -} - -/* - static void memreset(int controllers, const struct mem_controller *ctrl) - { - } -*/ - - -static void enable_mainboard_devices(void) -{ - device_t dev; - /* dev 0 for southbridge */ - - dev = pci_locate_device(PCI_ID(0x1106,0x8231), 0); - - if (dev == PCI_DEV_INVALID) { - die("Southbridge not found!!!\n"); - } - pci_write_config8(dev, 0x50, 7); - pci_write_config8(dev, 0x51, 0xff); -#if 0 - // This early setup switches IDE into compatibility mode before PCI gets - // // a chance to assign I/Os - // movl $CONFIG_ADDR(0, 0x89, 0x42), %eax - // // movb $0x09, %dl - // movb $0x00, %dl - // PCI_WRITE_CONFIG_BYTE - // -#endif - /* we do this here as in V2, we can not yet do raw operations - * to pci! - */ - dev += 0x100; /* ICKY */ - - pci_write_config8(dev, 0x42, 0); -} - static void enable_shadow_ram(void) { - device_t dev = 0; /* no need to look up 0:0.0 */ - unsigned char shadowreg; - /* dev 0 for southbridge */ - shadowreg = pci_read_config8(dev, 0x63); + uint8_t shadowreg; + /* dev 0 for northbridge */ + shadowreg = pci_read_config8(0, 0x59); /* 0xf0000-0xfffff */ shadowreg |= 0x30; - pci_write_config8(dev, 0x63, shadowreg); + pci_write_config8(0, 0x59, shadowreg); } +/* TODO: fix raminit.c to use smbus_read_byte */ static inline int spd_read_byte(unsigned device, unsigned address) { - unsigned char c; + uint8_t c; c = smbus_read_byte(device, address); return c; } - #include "northbridge/intel/i440bx/raminit.c" #include "northbridge/intel/i440bx/debug.c" #include "sdram/generic_sdram.c" static void main(unsigned long bist) { - static const struct mem_controller cpu[] = { + static const struct mem_controller memctrl[] = { { + .d0 = PCI_DEV(0, 0, 0), .channel0 = { - (0xa << 3) | 0, - (0xa << 3) | 1, - (0xa << 3) | 2, (0xa << 3) | 3, - }, + (0xa << 3) | 0, + (0xa << 3) | 1, + (0xa << 3) | 2, + (0xa << 3) | 3, + }, } }; - unsigned long x; if (bist == 0) { early_mtrr_init(); @@ -116,39 +93,27 @@ static void main(unsigned long bist) /* Halt if there was a built in self test failure */ report_bist_failure(bist); + enable_shadow_ram(); + enable_smbus(); - dump_spd_registers(&cpu[0]); -#if 0 - enable_shadow_ram(); - /* - memreset_setup(); - this is way more generic than we need. - sdram_initialize(sizeof(cpu)/sizeof(cpu[0]), cpu); - */ - sdram_set_registers((const struct mem_controller *) 0); - sdram_set_spd_registers((const struct mem_controller *) 0); - sdram_enable(0, (const struct mem_controller *) 0); -#endif - - /* Check all of memory */ -#if 0 - ram_check(0x00000000, msr.lo); -#endif -#if 0 - static const struct { - unsigned long lo, hi; - } check_addrs[] = { - /* Check 16MB of memory @ 0*/ - { 0x00000000, 0x01000000 }, -#if TOTAL_CPUS > 1 - /* Check 16MB of memory @ 2GB */ - { 0x80000000, 0x81000000 }, -#endif - }; - int i; - for(i = 0; i < sizeof(check_addrs)/sizeof(check_addrs[0]); i++) { - ram_check(check_addrs[i].lo, check_addrs[i].hi); - } -#endif + dump_spd_registers(&memctrl[0]); + + sdram_initialize(sizeof(memctrl) / sizeof(memctrl[0]), memctrl); + + /* Check whether RAM is working. + * + * Do _not_ check the area from 640 KB - 1 MB, as that's not really + * RAM, but rather reserved for various other things: + * + * - 640 KB - 768 KB: Video Buffer Area + * - 768 KB - 896 KB: Expansion Area + * - 896 KB - 960 KB: Extended System BIOS Area + * - 960 KB - 1 MB: Memory (BIOS Area) - System BIOS Area + * + * Trying to check these areas will fail. + */ + /* TODO: This is currently hardcoded to check 64 MB. */ + ram_check(0x00000000, 0x0009ffff); /* 0 - 640 KB */ + ram_check(0x00100000, 0x007c0000); /* 1 MB - 64 MB */ } |