Arthur Heymans has uploaded this change for review. ( https://review.coreboot.org/26788
Change subject: nb/intel/gm45: Switch to POSTCAR_STAGE ......................................................................
nb/intel/gm45: Switch to POSTCAR_STAGE
Change-Id: I02165cf63710bedcafe9287cbe8a1d1fe41ebae2 Signed-off-by: Arthur Heymans arthur@aheymans.xyz --- D src/cpu/intel/model_6ex/cache_as_ram.inc M src/cpu/intel/socket_BGA956/Makefile.inc M src/cpu/intel/socket_mPGA478MN/Makefile.inc M src/northbridge/intel/gm45/Kconfig M src/northbridge/intel/gm45/Makefile.inc M src/northbridge/intel/gm45/ram_calc.c 6 files changed, 11 insertions(+), 282 deletions(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/88/26788/1
diff --git a/src/cpu/intel/model_6ex/cache_as_ram.inc b/src/cpu/intel/model_6ex/cache_as_ram.inc deleted file mode 100644 index 4b85c07..0000000 --- a/src/cpu/intel/model_6ex/cache_as_ram.inc +++ /dev/null @@ -1,267 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright (C) 2000,2007 Ronald G. Minnich rminnich@gmail.com - * Copyright (C) 2007-2008 coresystems GmbH - * - * 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. - */ - -#include <cpu/x86/mtrr.h> -#include <cpu/x86/cache.h> -#include <cpu/x86/post_code.h> - -#define CPU_PHYSMASK_HI (1 << (CONFIG_CPU_ADDR_BITS - 32) - 1) - -#define CACHE_AS_RAM_SIZE CONFIG_DCACHE_RAM_SIZE -#define CACHE_AS_RAM_BASE CONFIG_DCACHE_RAM_BASE - - /* Save the BIST result. */ - movl %eax, %ebp - -cache_as_ram: - post_code(0x20) - - /* Send INIT IPI to all excluding ourself. */ - movl $0x000C4500, %eax - movl $0xFEE00300, %esi - movl %eax, (%esi) - - /* Zero out all fixed range and variable range MTRRs. */ - movl $mtrr_table, %esi - movl $((mtrr_table_end - mtrr_table) >> 1), %edi - xorl %eax, %eax - xorl %edx, %edx -clear_mtrrs: - movw (%esi), %bx - movzx %bx, %ecx - wrmsr - add $2, %esi - dec %edi - jnz clear_mtrrs - - post_code(0x22) - /* Configure the default memory type to uncacheable. */ - movl $MTRR_DEF_TYPE_MSR, %ecx - rdmsr - andl $(~0x00000cff), %eax - wrmsr - - post_code(0x23) - /* Set Cache-as-RAM base address. */ - movl $(MTRR_PHYS_BASE(0)), %ecx - movl $(CACHE_AS_RAM_BASE | MTRR_TYPE_WRBACK), %eax - xorl %edx, %edx - wrmsr - - post_code(0x24) - /* Set Cache-as-RAM mask. */ - movl $(MTRR_PHYS_MASK(0)), %ecx - movl $(~(CACHE_AS_RAM_SIZE - 1) | MTRR_PHYS_MASK_VALID), %eax - movl $CPU_PHYSMASK_HI, %edx - wrmsr - - post_code(0x25) - - /* Enable MTRR. */ - movl $MTRR_DEF_TYPE_MSR, %ecx - rdmsr - orl $MTRR_DEF_TYPE_EN, %eax - wrmsr - - /* Enable L2 cache. */ - movl $0x11e, %ecx - rdmsr - orl $(1 << 8), %eax - wrmsr - - /* Enable cache (CR0.CD = 0, CR0.NW = 0). */ - movl %cr0, %eax - andl $(~(CR0_CacheDisable | CR0_NoWriteThrough)), %eax - invd - movl %eax, %cr0 - - /* Clear the cache memory region. This will also fill up the cache. */ - movl $CACHE_AS_RAM_BASE, %esi - movl %esi, %edi - movl $(CACHE_AS_RAM_SIZE >> 2), %ecx - // movl $0x23322332, %eax - xorl %eax, %eax - rep stosl - - post_code(0x26) - /* Enable Cache-as-RAM mode by disabling cache. */ - movl %cr0, %eax - orl $CR0_CacheDisable, %eax - movl %eax, %cr0 - - /* Enable cache for our code in Flash because we do XIP here */ - movl $MTRR_PHYS_BASE(1), %ecx - xorl %edx, %edx - /* - * IMPORTANT: The following calculation _must_ be done at runtime. See - * https://www.coreboot.org/pipermail/coreboot/2010-October/060855.html - */ - movl $copy_and_run, %eax - andl $(~(CONFIG_XIP_ROM_SIZE - 1)), %eax - orl $MTRR_TYPE_WRPROT, %eax - wrmsr - - movl $MTRR_PHYS_MASK(1), %ecx - movl $CPU_PHYSMASK_HI, %edx - movl $(~(CONFIG_XIP_ROM_SIZE - 1) | MTRR_PHYS_MASK_VALID), %eax - wrmsr - - post_code(0x28) - /* Enable cache. */ - movl %cr0, %eax - andl $(~(CR0_CacheDisable | CR0_NoWriteThrough)), %eax - movl %eax, %cr0 - - /* Setup the stack. */ - movl $(CONFIG_DCACHE_RAM_BASE + CONFIG_DCACHE_RAM_SIZE), %eax - movl %eax, %esp - - /* Restore the BIST result. */ - movl %ebp, %eax - movl %esp, %ebp - pushl %eax - -before_romstage: - post_code(0x29) - /* Call romstage.c main function. */ - call romstage_main - /* Save return value from romstage_main. It contains the stack to use - * after cache-as-ram is torn down. It also contains the information - * for setting up MTRRs. */ - movl %eax, %esp - - post_code(0x30) - - /* Disable cache. */ - movl %cr0, %eax - orl $CR0_CacheDisable, %eax - movl %eax, %cr0 - - post_code(0x31) - - /* Disable MTRR. */ - movl $MTRR_DEF_TYPE_MSR, %ecx - rdmsr - andl $(~MTRR_DEF_TYPE_EN), %eax - wrmsr - - post_code(0x32) - - invd - - post_code(0x33) - - /* Enable cache. */ - movl %cr0, %eax - andl $~(CR0_CacheDisable | CR0_NoWriteThrough), %eax - movl %eax, %cr0 - - post_code(0x36) - - /* Disable cache. */ - movl %cr0, %eax - orl $CR0_CacheDisable, %eax - movl %eax, %cr0 - - post_code(0x38) - - /* Clear all of the variable MTRRs. */ - popl %ebx - movl $MTRR_PHYS_BASE(0), %ecx - clr %eax - clr %edx - -1: - testl %ebx, %ebx - jz 1f - wrmsr /* Write MTRR base. */ - inc %ecx - wrmsr /* Write MTRR mask. */ - inc %ecx - dec %ebx - jmp 1b - -1: - /* Get number of MTRRs. */ - popl %ebx - movl $MTRR_PHYS_BASE(0), %ecx -2: - testl %ebx, %ebx - jz 2f - - /* Low 32 bits of MTRR base. */ - popl %eax - /* Upper 32 bits of MTRR base. */ - popl %edx - /* Write MTRR base. */ - wrmsr - inc %ecx - /* Low 32 bits of MTRR mask. */ - popl %eax - /* Upper 32 bits of MTRR mask. */ - popl %edx - /* Write MTRR mask. */ - wrmsr - inc %ecx - - dec %ebx - jmp 2b -2: - - post_code(0x39) - - /* And enable cache again after setting MTRRs. */ - movl %cr0, %eax - andl $~(CR0_CacheDisable | CR0_NoWriteThrough), %eax - movl %eax, %cr0 - - post_code(0x3a) - - /* Enable MTRR. */ - movl $MTRR_DEF_TYPE_MSR, %ecx - rdmsr - orl $MTRR_DEF_TYPE_EN, %eax - wrmsr - - post_code(0x3b) - - /* Invalidate the cache again. */ - invd - - post_code(0x3c) - -__main: - post_code(POST_PREPARE_RAMSTAGE) - cld /* Clear direction flag. */ - call romstage_after_car - -.Lhlt: - post_code(POST_DEAD_CODE) - hlt - jmp .Lhlt - -mtrr_table: - /* Fixed MTRRs */ - .word 0x250, 0x258, 0x259 - .word 0x268, 0x269, 0x26A - .word 0x26B, 0x26C, 0x26D - .word 0x26E, 0x26F - /* Variable MTRRs */ - .word 0x200, 0x201, 0x202, 0x203 - .word 0x204, 0x205, 0x206, 0x207 - .word 0x208, 0x209, 0x20A, 0x20B - .word 0x20C, 0x20D, 0x20E, 0x20F -mtrr_table_end: diff --git a/src/cpu/intel/socket_BGA956/Makefile.inc b/src/cpu/intel/socket_BGA956/Makefile.inc index f33b409..05514a1 100644 --- a/src/cpu/intel/socket_BGA956/Makefile.inc +++ b/src/cpu/intel/socket_BGA956/Makefile.inc @@ -8,11 +8,7 @@ subdirs-y += ../hyperthreading subdirs-y += ../speedstep
-ifneq ($(CONFIG_POSTCAR_STAGE),y) -cpu_incs-y += $(src)/cpu/intel/model_6ex/cache_as_ram.inc -else cpu_incs-y += $(src)/cpu/intel/car/core2/cache_as_ram.S postcar-y += ../car/p4-netburst/exit_car.S -endif
romstage-y += ../car/romstage.c diff --git a/src/cpu/intel/socket_mPGA478MN/Makefile.inc b/src/cpu/intel/socket_mPGA478MN/Makefile.inc index ef89ac6..78d7c0e 100644 --- a/src/cpu/intel/socket_mPGA478MN/Makefile.inc +++ b/src/cpu/intel/socket_mPGA478MN/Makefile.inc @@ -9,11 +9,7 @@ subdirs-y += ../hyperthreading subdirs-y += ../speedstep
-ifneq ($(CONFIG_POSTCAR_STAGE),y) -cpu_incs-y += $(src)/cpu/intel/model_6ex/cache_as_ram.inc -else cpu_incs-y += $(src)/cpu/intel/car/core2/cache_as_ram.S postcar-y += ../car/p4-netburst/exit_car.S -endif
romstage-y += ../car/romstage.c diff --git a/src/northbridge/intel/gm45/Kconfig b/src/northbridge/intel/gm45/Kconfig index 85902d3..193ec70 100644 --- a/src/northbridge/intel/gm45/Kconfig +++ b/src/northbridge/intel/gm45/Kconfig @@ -29,6 +29,8 @@ select RELOCATABLE_RAMSTAGE select HAVE_LINEAR_FRAMEBUFFER if MAINBOARD_DO_NATIVE_VGA_INIT select HAVE_VGA_TEXT_FRAMEBUFFER if MAINBOARD_DO_NATIVE_VGA_INIT + select POSTCAR_STAGE + select POSTCAR_CONSOLE
config CBFS_SIZE hex diff --git a/src/northbridge/intel/gm45/Makefile.inc b/src/northbridge/intel/gm45/Makefile.inc index fdf0012..c12bbf1 100644 --- a/src/northbridge/intel/gm45/Makefile.inc +++ b/src/northbridge/intel/gm45/Makefile.inc @@ -36,4 +36,6 @@
smm-$(CONFIG_HAVE_SMI_HANDLER) += ../../../cpu/x86/lapic/apic_timer.c
+postcar-y += ram_calc.c + endif diff --git a/src/northbridge/intel/gm45/ram_calc.c b/src/northbridge/intel/gm45/ram_calc.c index 9b70523..c986ffe 100644 --- a/src/northbridge/intel/gm45/ram_calc.c +++ b/src/northbridge/intel/gm45/ram_calc.c @@ -118,9 +118,10 @@
#define ROMSTAGE_RAM_STACK_SIZE 0x5000
-/* setup_stack_and_mtrrs() determines the stack to use after - * cache-as-ram is torn down as well as the MTRR settings to use. */ -void *setup_stack_and_mtrrs(void) +/* platform_enter_postcar() determines the stack to use after + * cache-as-ram is torn down as well as the MTRR settings to use, + * and continues execution in postcar stage. */ +void platform_enter_postcar(void) { struct postcar_frame pcf; uintptr_t top_of_ram; @@ -144,8 +145,7 @@ postcar_frame_add_mtrr(&pcf, top_of_ram - 4*MiB, 4*MiB, MTRR_TYPE_WRBACK); postcar_frame_add_mtrr(&pcf, top_of_ram - 8*MiB, 4*MiB, MTRR_TYPE_WRBACK);
- /* Save the number of MTRRs to setup. Return the stack location - * pointing to the number of MTRRs. - */ - return postcar_commit_mtrrs(&pcf); + run_postcar_phase(&pcf); + + /* We do not return here. */ }
-
Arthur Heymans (Code Review)