Slot-1 boards: asus/p3b-f asus/p2b-ds asus/p2b-f asus/p2b-d asus/p2b asus/p2b-ls azza/pt-6ibd gigabyte/ga-6bxc gigabyte/ga-6bxe compaq/deskpro_en_sff_p600 a-trend/atc-6220 a-trend/atc-6240 tyan/s1846 msi/ms6119 msi/ms6147 msi/ms6156 soyo/sy-6ba-plus-iii abit/be6-ii_v2_0 biostar/m6tba
Slot-1 boards with HAVE_ACPI_TABLES: asus/p2b
Abuild-tested. Tested on P2B (Slot1 440BX/82371EB). Tested on M2V (Socket AM2/K8T890/VT8237A) to make sure S3 still works with all 3 patches applied.
Signed-off-by: Tobias Diedrich ranma+coreboot@tdiedrich.de
---
Index: src/northbridge/intel/i440bx/northbridge.c =================================================================== --- src/northbridge/intel/i440bx/northbridge.c.orig 2010-12-01 19:11:34.000000000 +0100 +++ src/northbridge/intel/i440bx/northbridge.c 2010-12-01 19:11:40.000000000 +0100 @@ -9,6 +9,7 @@ #include <bitops.h> #include <cpu/cpu.h> #include <pc80/keyboard.h> +#include <cbmem.h> #include "chip.h" #include "northbridge.h" #include "i440bx.h" @@ -34,7 +35,7 @@ };
#if CONFIG_WRITE_HIGH_TABLES==1 -#define HIGH_TABLES_SIZE 64 // maximum size of high tables in KB +#define HIGH_TABLES_SIZE ((HIGH_MEMORY_SIZE + 1024) / 1024) extern uint64_t high_tables_base, high_tables_size; #endif
Index: src/cpu/intel/car/post_cache_as_ram.c =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ src/cpu/intel/car/post_cache_as_ram.c 2010-12-01 19:11:40.000000000 +0100 @@ -0,0 +1,248 @@ +/* + * This file is part of the coreboot project. + * + * original idea yhlu 6.2005 (assembler code) + * + * Copyright (C) 2010 Rudolf Marek r.marek@assembler.cz + * + * 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 + * + * be warned, this file will be used other cores and core 0 / node 0 + */ +#include <string.h> +#include <arch/stages.h> +#include <console/console.h> +#include <cpu/x86/mtrr.h> +#include <arch/acpi.h> +#define get_cbmem_toc get_cbmem_toc +#include <cbmem.h> +#include "cpu/x86/mtrr/earlymtrr.c" +// Now, this needs to be included because it relies on the symbol +// __PRE_RAM__ being set during CAR stage (in order to compile the +// BSS free versions of the functions). Either rewrite the code +// to be always BSS free, or invent a flag that's better suited than +// __PRE_RAM__ to determine whether we're in ram init stage (stage 1) +// +#include "lib/cbmem.c" + +#if CONFIG_RAMTOP <= 0x100000 + #error "You need to set CONFIG_RAMTOP greater than 1M" +#endif + +#define DCACHE_RAM_BASE (CONFIG_DCACHE_RAM_TOP - CONFIG_DCACHE_RAM_SIZE) + +static inline void print_debug_pcar(const char *strval, uint32_t val) +{ + printk(BIOS_DEBUG, "%s%08x\n", strval, val); +} + +/* from linux kernel 2.6.32 asm/string_32.h */ + +static void inline __attribute__((always_inline)) memcopy(void *dest, const void *src, unsigned long bytes) +{ + int d0, d1, d2; + asm volatile("cld ; rep ; movsl\n\t" + "movl %4,%%ecx\n\t" + "andl $3,%%ecx\n\t" + "jz 1f\n\t" + "rep ; movsb\n\t" + "1:" + : "=&c" (d0), "=&D" (d1), "=&S" (d2) + : "0" (bytes / 4), "g" (bytes), "1" ((long)dest), "2" ((long)src) + : "memory", "cc"); +} + +static u8 acpi_checksum(u8 *table, u32 length) +{ + u8 ret = 0; + while (length--) { + ret += *table; + table++; + } + return -ret; +} + +static int valid_rsdp(acpi_rsdp_t *rsdp) +{ + unsigned *sig; + sig = (void*)rsdp; + if (*sig != 0x20445352) + return 0; + sig++; + if (*sig != 0x20525450) + return 0; + + print_debug("Looking on "); + print_debug_hex32((u32)rsdp); + print_debug(" for valid checksum\n"); + + if (acpi_checksum((void *)rsdp, 20) != 0) + return 0; + print_debug("Checksum 1 passed\n"); + + if ((rsdp->revision > 1) && + (acpi_checksum((void *)rsdp, rsdp->length) != 0)) + return 0; + print_debug("Checksum 2 passed all OK\n"); + + return 1; +} + +struct cbmem_entry *get_cbmem_toc(void) +{ + char *p; + acpi_rsdp_t *rsdp; + cbmem_toc_ptr_t *cbmem_tocp; + + print_debug("Trying to find the backup area pointer...\n"); + + /* Find RSDP. */ + rsdp = NULL; + for (p = (char *)0xe0000; p < (char *)0xfffff; p += 16) { + rsdp = (acpi_rsdp_t *)p; + if (valid_rsdp(rsdp)) + break; + rsdp = NULL; + } + + if (rsdp == NULL) { + print_debug("RSDP not found\n"); + return NULL; + } + + cbmem_tocp = (cbmem_toc_ptr_t *)(rsdp->rsdt_address - sizeof(cbmem_toc_ptr_t)); + if (cbmem_tocp->sig != CBMEM_TOC_PTR_SIG) { + printk(BIOS_DEBUG, "cbmem toc pointer not found at %p (sig %08x sz %d)\n", cbmem_tocp, cbmem_tocp->sig, sizeof(cbmem_toc_ptr_t)); + return NULL; + } + + return cbmem_tocp->ptr; +} + +static inline void *backup_resume(void) { + unsigned long high_ram_base; + void *resume_backup_memory; + + /* Start address of high memory tables */ + high_ram_base = (u32) get_cbmem_toc(); + + print_debug_pcar("CBMEM TOC is at: ", high_ram_base); + print_debug_pcar("CBMEM TOC 0-size: ", (high_ram_base + HIGH_MEMORY_SIZE + 4096)); + + cbmem_reinit((u64)high_ram_base); + + resume_backup_memory = cbmem_find(CBMEM_ID_RESUME); + + /* copy 1MB - 64K to high tables ram_base to prevent memory corruption + * through stage 2. We could keep stuff like stack and heap in high tables + * memory completely, but that's a wonderful clean up task for another + * day. + */ + + if (resume_backup_memory) { + print_debug_pcar("Will copy coreboot region to: ", (uint32_t) resume_backup_memory); + /* copy only backup only memory used for CAR */ + memcopy(resume_backup_memory+HIGH_MEMORY_SAVE-CONFIG_DCACHE_RAM_SIZE, + (void *)((CONFIG_RAMTOP)-CONFIG_DCACHE_RAM_SIZE), + CONFIG_DCACHE_RAM_SIZE); //inline + } + + return resume_backup_memory; +} + +void enable_pm(void); +int acpi_get_sleep_type(void); + +void* acpi_resume_post_main(void); +void acpi_resume_post_cache_as_ram(void *resume_backup_memory); + +void* acpi_resume_post_main(void) +{ + int sleep_type; + void *resume_backup_memory = NULL; + + enable_pm(); + sleep_type = acpi_get_sleep_type(); + +#if 1 + { + /* Check value of esp to verify if we have enough rom for stack in Cache as RAM */ + unsigned v_esp; + __asm__ volatile ( + "movl %%esp, %0\n\t" + : "=a" (v_esp) + ); + print_debug_pcar("v_esp=", v_esp); + } +#endif + + unsigned testx = 0x5a5a5a5a; + print_debug_pcar("testx = ", testx); + + /* copy data from cache as ram to + ram need to set CONFIG_RAMTOP to 2M and use var mtrr instead. + */ + if (sleep_type == 2 || sleep_type == 3) + resume_backup_memory = backup_resume(); + + printk(BIOS_DEBUG, "resume_backup_memory=%p\n", resume_backup_memory); + + print_debug("Copying data from cache to RAM -- switching to use RAM as stack... "); + + memcopy((void *)((CONFIG_RAMTOP)-CONFIG_DCACHE_RAM_SIZE), (void *)DCACHE_RAM_BASE, CONFIG_DCACHE_RAM_SIZE); //inline + + __asm__ volatile ( + /* set new esp */ /* before CONFIG_RAMBASE */ + "subl %0, %%esp\n\t" + ::"a"( (DCACHE_RAM_BASE + CONFIG_DCACHE_RAM_SIZE)- (CONFIG_RAMTOP) ) + /* discard all registers (eax is used for %0), so gcc redo everything + after the stack is moved */ + : "cc", "memory", "%ebx", "%ecx", "%edx", "%esi", "%edi", "%ebp" + ); + + /* We can put data to stack again */ + + /* only global variable sysinfo in cache need to be offset */ + print_debug("Done\n"); + print_debug_pcar("testx = ", testx); + + return resume_backup_memory; +} + +void acpi_resume_post_cache_as_ram(void *resume_backup_memory) +{ + print_debug("After cache as ram disabled \n"); + printk(BIOS_DEBUG, "resume_backup_memory=%p\n", resume_backup_memory); + + /* now copy the rest of the area, using the WB method because we already + run normal RAM */ + if (resume_backup_memory) { + memcopy(resume_backup_memory, + (void *)(CONFIG_RAMBASE), + (CONFIG_RAMTOP) - CONFIG_RAMBASE - CONFIG_DCACHE_RAM_SIZE); + } + + print_debug("Clearing initial memory region: "); + + /* clear only coreboot used region of memory. Note: this may break ECC enabled boards */ + memset((void*) CONFIG_RAMBASE, 0, (CONFIG_RAMTOP) - CONFIG_RAMBASE - CONFIG_DCACHE_RAM_SIZE); + print_debug("Done\n"); + + /*copy and execute coreboot_ram */ + copy_and_run(0); + /* We will not return */ + + print_debug("should not be here -\n"); + for (;;); +} Index: src/cpu/intel/car/cache_as_ram.inc =================================================================== --- src/cpu/intel/car/cache_as_ram.inc.orig 2010-12-01 19:11:34.000000000 +0100 +++ src/cpu/intel/car/cache_as_ram.inc 2010-12-01 19:11:40.000000000 +0100 @@ -26,8 +26,12 @@ #include <cpu/x86/mtrr.h> #include <cpu/x86/lapic_def.h>
+#ifndef CONFIG_DCACHE_RAM_TOP +#define CONFIG_DCACHE_RAM_TOP 0xd0000 +#endif + #define CacheSize CONFIG_DCACHE_RAM_SIZE -#define CacheBase (0xd0000 - CacheSize) +#define CacheBase (CONFIG_DCACHE_RAM_TOP - CacheSize)
save_bist_result()
@@ -325,6 +329,11 @@ pushl %eax /* BIST */ call main
+#if CONFIG_HAVE_ACPI_RESUME && CONFIG_POST_CAR_RESUME + call acpi_resume_post_main + pushl %eax /* save resume_backup_memory pointer */ +#endif + /* We don't need CAR from now on. */
disable_cache() @@ -351,6 +360,13 @@
enable_cache();
+#if CONFIG_HAVE_ACPI_RESUME && CONFIG_POST_CAR_RESUME + popl %eax + movl %esp, %ebp + pushl %eax /* resume_backup_memory pointer */ + call acpi_resume_post_cache_as_ram +#endif + /* Clear boot_complete flag. */ xorl %ebp, %ebp __main: Index: src/arch/i386/include/arch/acpi.h =================================================================== --- src/arch/i386/include/arch/acpi.h.orig 2010-12-01 19:11:34.000000000 +0100 +++ src/arch/i386/include/arch/acpi.h 2010-12-01 19:11:40.000000000 +0100 @@ -357,6 +357,8 @@ u8 ec_id[]; /* EC ID */ } __attribute__ ((packed)) acpi_ecdt_t;
+#if !defined(__PRE_RAM__) + /* These are implemented by the target port or north/southbridge. */ unsigned long write_acpi_tables(unsigned long addr); unsigned long acpi_fill_madt(unsigned long current); @@ -431,6 +433,8 @@ /* cpu/intel/speedstep/acpi.c */ void generate_cpu_entries(void);
+#endif // __PRE_RAM__ + #else // CONFIG_GENERATE_ACPI_TABLES
#define write_acpi_tables(start) (start) Index: src/cpu/intel/Makefile.inc =================================================================== --- src/cpu/intel/Makefile.inc.orig 2010-12-01 19:11:34.000000000 +0100 +++ src/cpu/intel/Makefile.inc 2010-12-01 19:11:40.000000000 +0100 @@ -16,6 +16,7 @@ subdirs-$(CONFIG_CPU_INTEL_SOCKET_PGA370) += socket_PGA370 subdirs-$(CONFIG_CPU_INTEL_SLOT_2) += slot_2 subdirs-$(CONFIG_CPU_INTEL_SLOT_1) += slot_1 +subdirs-$(CONFIG_CPU_INTEL) += car
#socket_mPGA604_533Mhz #socket_mPGA604_800Mhz Index: src/cpu/intel/car/Makefile.inc =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ src/cpu/intel/car/Makefile.inc 2010-12-01 19:11:40.000000000 +0100 @@ -0,0 +1,21 @@ +## +## This file is part of the coreboot project. +## +## Copyright (C) 2010 Tobias Diedrich ranma+coreboot@tdiedrich.de +## +## This program is free software; you can redistribute it and/or modify +## it under the terms of the GNU General Public License as published by +## the Free Software Foundation; either version 2 of the License, or +## (at your option) any later version. +## +## This program is distributed in the hope that it will be useful, +## but WITHOUT ANY WARRANTY; without even the implied warranty of +## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +## GNU General Public License for more details. +## +## You should have received a copy of the GNU General Public License +## along with this program; if not, write to the Free Software +## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA +## + +romstage-$(CONFIG_POST_CAR_RESUME) += post_cache_as_ram.c Index: src/cpu/intel/Kconfig =================================================================== --- src/cpu/intel/Kconfig.orig 2010-12-01 19:11:34.000000000 +0100 +++ src/cpu/intel/Kconfig 2010-12-01 19:11:40.000000000 +0100 @@ -28,3 +28,17 @@ source src/cpu/intel/socket_mPGA604/Kconfig source src/cpu/intel/socket_PGA370/Kconfig source src/cpu/intel/socket_441/Kconfig + +config CPU_INTEL + bool + default n + +config POST_CAR_RESUME + bool + default n + +config DCACHE_RAM_TOP + hex + default 0xd0000 + depends on CACHE_AS_RAM + depends on CPU_INTEL Index: src/mainboard/asus/p2b/dsdt.asl =================================================================== --- src/mainboard/asus/p2b/dsdt.asl.orig 2010-12-01 19:11:34.000000000 +0100 +++ src/mainboard/asus/p2b/dsdt.asl 2010-12-01 19:11:40.000000000 +0100 @@ -40,6 +40,11 @@ */ Name (_S0, Package () { 0x05, 0x05, 0x00, 0x00 }) Name (_S1, Package () { 0x03, 0x03, 0x00, 0x00 }) + Name (_S2, Package () { 0x02, 0x02, 0x00, 0x00 }) + Name (_S3, Package () { 0x01, 0x01, 0x00, 0x00 }) + /* Note: S4 would be suspend to disk, which would require smm code, + * but Linux and Windows handle suspend to disk themselves, so we + * don't need this */ Name (_S5, Package () { 0x00, 0x00, 0x00, 0x00 })
OperationRegion (SIO1, SystemIO, Add(DEFAULT_PMBASE, GPO0), 2) Index: src/southbridge/intel/i82371eb/Makefile.inc =================================================================== --- src/southbridge/intel/i82371eb/Makefile.inc.orig 2010-12-01 19:11:34.000000000 +0100 +++ src/southbridge/intel/i82371eb/Makefile.inc 2010-12-01 19:11:40.000000000 +0100 @@ -30,3 +30,4 @@
romstage-y += i82371eb_early_pm.c romstage-y += i82371eb_early_smbus.c +romstage-$(CONFIG_HAVE_ACPI_RESUME) += i82371eb_wakeup.c Index: src/cpu/intel/slot_1/Kconfig =================================================================== --- src/cpu/intel/slot_1/Kconfig.orig 2010-12-01 19:11:34.000000000 +0100 +++ src/cpu/intel/slot_1/Kconfig 2010-12-01 19:25:18.000000000 +0100 @@ -20,6 +20,9 @@ config CPU_INTEL_SLOT_1 bool select CACHE_AS_RAM + select CPU_INTEL + select POST_CAR_RESUME if GENERATE_ACPI_TABLES +
config DCACHE_RAM_SIZE hex