Kyösti Mälkki (kyosti.malkki@gmail.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/642
-gerrit
commit 65529a4d5647fafe0320fe4e3a5b497dc5dd6d1d Author: Kyösti Mälkki kyosti.malkki@gmail.com Date: Thu Jun 28 21:50:43 2012 +0300
Intel model_106cx: change CAR to model_6ex
Diff between model_106cx and model_6ex CAR codes suggests currently used model_106cx CAR is not optimal - destination RAM and source ROM of ramstage copy_and_run are only partly set cacheable.
It appears variable MTRR setting for XIP cache is left enabled on model_106cx code, where it should have extended to cover all of Flash.
Introduces untested functional change on boards: intel/d945gclf iwave/iWRainbowG6
Deletes file: model_106cx/cache_as_ram.inc
Change-Id: I35229f8433927e83821e72e9d9a9fc8fb09c3f1d Signed-off-by: Kyösti Mälkki kyosti.malkki@gmail.com --- src/cpu/intel/model_106cx/Makefile.inc | 2 +- src/cpu/intel/model_106cx/cache_as_ram.inc | 246 ---------------------------- 2 files changed, 1 insertions(+), 247 deletions(-)
diff --git a/src/cpu/intel/model_106cx/Makefile.inc b/src/cpu/intel/model_106cx/Makefile.inc index edcd01c..018febc 100644 --- a/src/cpu/intel/model_106cx/Makefile.inc +++ b/src/cpu/intel/model_106cx/Makefile.inc @@ -1,4 +1,4 @@ driver-y += model_106cx_init.c subdirs-y += ../../x86/name
-cpu_incs += $(src)/cpu/intel/model_106cx/cache_as_ram.inc +cpu_incs += $(src)/cpu/intel/model_6ex/cache_as_ram.inc diff --git a/src/cpu/intel/model_106cx/cache_as_ram.inc b/src/cpu/intel/model_106cx/cache_as_ram.inc deleted file mode 100644 index c626cd8..0000000 --- a/src/cpu/intel/model_106cx/cache_as_ram.inc +++ /dev/null @@ -1,246 +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. - * - * 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 <cpu/x86/stack.h> -#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) / 2), %edi - xorl %eax, %eax - xorl %edx, %edx -clear_mtrrs: - movw (%esi), %bx - movzx %bx, %ecx - wrmsr - add $2, %esi - dec %edi - jnz clear_mtrrs - - /* Configure the default memory type to uncacheable. */ - movl $MTRRdefType_MSR, %ecx - rdmsr - andl $(~0x00000cff), %eax - wrmsr - - /* Set Cache-as-RAM base address. */ - movl $(MTRRphysBase_MSR(0)), %ecx - movl $(CACHE_AS_RAM_BASE | MTRR_TYPE_WRBACK), %eax - xorl %edx, %edx - wrmsr - - /* Set Cache-as-RAM mask. */ - movl $(MTRRphysMask_MSR(0)), %ecx - movl $(~(CACHE_AS_RAM_SIZE - 1) | MTRRphysMaskValid), %eax - movl $CPU_PHYSMASK_HI, %edx - wrmsr - - /* Enable MTRR. */ - movl $MTRRdefType_MSR, %ecx - rdmsr - orl $MTRRdefTypeEn, %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 reagion. */ - movl $CACHE_AS_RAM_BASE, %esi - movl %esi, %edi - movl $(CACHE_AS_RAM_SIZE / 4), %ecx - // movl $0x23322332, %eax - xorl %eax, %eax - rep stosl - - /* Enable Cache-as-RAM mode by disabling cache. */ - movl %cr0, %eax - orl $CR0_CacheDisable, %eax - movl %eax, %cr0 - -#if CONFIG_XIP_ROM_SIZE - /* Enable cache for our code in Flash because we do XIP here */ - movl $MTRRphysBase_MSR(1), %ecx - xorl %edx, %edx - /* - * IMPORTANT: The following calculation _must_ be done at runtime. See - * http://www.coreboot.org/pipermail/coreboot/2010-October/060855.html - */ - movl $copy_and_run, %eax - andl $(~(CONFIG_XIP_ROM_SIZE - 1)), %eax - orl $MTRR_TYPE_WRBACK, %eax - wrmsr - - movl $MTRRphysMask_MSR(1), %ecx - movl $CPU_PHYSMASK_HI, %edx - movl $(~(CONFIG_XIP_ROM_SIZE - 1) | MTRRphysMaskValid), %eax - wrmsr -#endif /* CONFIG_XIP_ROM_SIZE */ - - /* Enable cache. */ - movl %cr0, %eax - andl $(~(CR0_CacheDisable | CR0_NoWriteThrough)), %eax - movl %eax, %cr0 - - /* Set up the stack pointer. */ -#if CONFIG_USBDEBUG - /* Leave some space for the struct ehci_debug_info. */ - movl $(CACHE_AS_RAM_BASE + CACHE_AS_RAM_SIZE - 4 - 128), %eax -#else - movl $(CACHE_AS_RAM_BASE + CACHE_AS_RAM_SIZE - 4), %eax -#endif - movl %eax, %esp - - /* Restore the BIST result. */ - movl %ebp, %eax - movl %esp, %ebp - pushl %eax - - post_code(0x23) - - /* Call romstage.c main function. */ - call main - - post_code(0x2f) - - post_code(0x30) - - /* Disable cache. */ - movl %cr0, %eax - orl $CR0_CacheDisable, %eax - movl %eax, %cr0 - - post_code(0x31) - - /* Disable MTRR. */ - movl $MTRRdefType_MSR, %ecx - rdmsr - andl $(~MTRRdefTypeEn), %eax - wrmsr - - post_code(0x31) - - 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) - - /* Enable Write Back and Speculative Reads for the first 1MB. */ - movl $MTRRphysBase_MSR(0), %ecx - movl $(0x00000000 | MTRR_TYPE_WRBACK), %eax - xorl %edx, %edx - wrmsr - movl $MTRRphysMask_MSR(0), %ecx - movl $(~(1024 * 1024 - 1) | MTRRphysMaskValid), %eax - movl $CPU_PHYSMASK_HI, %edx - wrmsr - - 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 $MTRRdefType_MSR, %ecx - rdmsr - orl $MTRRdefTypeEn, %eax - wrmsr - - post_code(0x3b) - - /* Invalidate the cache again. */ - invd - - post_code(0x3c) - - /* Clear boot_complete flag. */ - xorl %ebp, %ebp -__main: - post_code(POST_PREPARE_RAMSTAGE) - cld /* Clear direction flag. */ - - movl %ebp, %esi - - movl $ROMSTAGE_STACK, %esp - movl %esp, %ebp - pushl %esi - call copy_and_run - -.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: -