diff options
Diffstat (limited to 'src/soc/intel/braswell/romstage/cache_as_ram.inc')
| -rw-r--r-- | src/soc/intel/braswell/romstage/cache_as_ram.inc | 284 |
1 files changed, 0 insertions, 284 deletions
diff --git a/src/soc/intel/braswell/romstage/cache_as_ram.inc b/src/soc/intel/braswell/romstage/cache_as_ram.inc deleted file mode 100644 index 7c6a67faff..0000000000 --- a/src/soc/intel/braswell/romstage/cache_as_ram.inc +++ /dev/null @@ -1,284 +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. - */ - -#include <cpu/x86/mtrr.h> -#include <cpu/x86/cache.h> -#include <cpu/x86/post_code.h> -#include <cbmem.h> - -/* The full cache-as-ram size includes the cache-as-ram portion from coreboot - * and the space used by the reference code. These 2 values combined should - * be a power of 2 because the MTRR setup assumes that. */ -#define CACHE_AS_RAM_SIZE \ - (CONFIG_DCACHE_RAM_SIZE + CONFIG_DCACHE_RAM_MRC_VAR_SIZE) -#define CACHE_AS_RAM_BASE CONFIG_DCACHE_RAM_BASE - -/* Cache all of CBFS just below 4GiB as Write-Protect type. */ -#define CODE_CACHE_SIZE (CONFIG_CBFS_SIZE) -#define CODE_CACHE_BASE (-CODE_CACHE_SIZE) -#define CODE_CACHE_MASK (~(CODE_CACHE_SIZE - 1)) -#define CPU_PHYSMASK_HI ((1 << (CONFIG_CPU_ADDR_BITS - 32)) - 1) - -#define NoEvictMod_MSR 0x2e0 -#define BBL_CR_CTL3_MSR 0x11e -#define MCG_CAP_MSR 0x179 - - /* 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) - - /* All CPUs need to be in Wait for SIPI state */ -wait_for_sipi: - movl (%esi), %eax - bt $12, %eax - jc wait_for_sipi - - post_code(0x21) - /* Configure the default memory type to uncacheable as well as disable - * fixed and variable range mtrrs. */ - movl $MTRRdefType_MSR, %ecx - rdmsr - andl $(~0x00000cff), %eax - wrmsr - - post_code(0x22) - /* Zero the variable MTRRs. */ - movl $MCG_CAP_MSR, %ecx - rdmsr - movzx %al, %ebx - /* First variable MTRR. */ - movl $0x200, %ecx - xorl %eax, %eax - xorl %edx, %edx - 1: - wrmsr - inc %ecx - dec %ebx - jnz 1b - - /* Zero out all fixed range and variable range MTRRs. */ - movl $fixed_mtrr_table, %esi - movl $((fixed_mtrr_table_end - fixed_mtrr_table) / 2), %edi - xorl %eax, %eax - xorl %edx, %edx - 1: - movw (%esi), %bx - movzx %bx, %ecx - wrmsr - add $2, %esi - dec %edi - jnz 1b - - post_code(0x23) - /* Set Cache-as-RAM base address. */ - movl $(MTRRphysBase_MSR(0)), %ecx - movl $(CACHE_AS_RAM_BASE | MTRR_TYPE_WRBACK), %eax - xorl %edx, %edx - wrmsr - - post_code(0x24) - /* Set Cache-as-RAM mask. */ - movl $(MTRRphysMask_MSR(0)), %ecx - movl $(~(CACHE_AS_RAM_SIZE - 1) | MTRRphysMaskValid), %eax - movl $CPU_PHYSMASK_HI, %edx - wrmsr - - post_code(0x25) - /* Set code caching up for romstage. */ - movl $(MTRRphysBase_MSR(1)), %ecx - movl $(CODE_CACHE_BASE | MTRR_TYPE_WRPROT), %eax - xorl %edx, %edx - wrmsr - - movl $(MTRRphysMask_MSR(1)), %ecx - movl $(CODE_CACHE_MASK | MTRRphysMaskValid), %eax - movl $CPU_PHYSMASK_HI, %edx - wrmsr - - /* Enable MTRR. */ - movl $MTRRdefType_MSR, %ecx - rdmsr - orl $MTRRdefTypeEn, %eax - wrmsr - - post_code(0x26) - - /* Enable the L2 cache. */ - movl $BBL_CR_CTL3_MSR, %ecx - rdmsr - orl $0x100, %eax - wrmsr - - post_code(0x27) - - /* Enable cache (CR0.CD = 0, CR0.NW = 0). */ - movl %cr0, %eax - andl $(~(CR0_CacheDisable | CR0_NoWriteThrough)), %eax - invd - movl %eax, %cr0 - - /* enable the 'no eviction' mode */ - movl $NoEvictMod_MSR, %ecx - rdmsr - orl $1, %eax - wrmsr - - post_code(0x28) - - /* 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 / 4), %ecx - xorl %eax, %eax - rep stosl - - /* enable no evict mode */ - movl $NoEvictMod_MSR, %ecx - rdmsr - orl $2, %eax - wrmsr - - post_code(0x29) - - /* Setup the stack. */ - movl $(CONFIG_DCACHE_RAM_BASE + CONFIG_DCACHE_RAM_SIZE), %eax - movl %eax, %esp - - /* Push the initial TSC value from boot block. The low 32 bits are - * in mm0, and the high 32 bits are in mm1. */ - movd %mm1, %eax - pushl %eax - movd %mm0, %eax - pushl %eax - /* Restore the BIST result. */ - movl %ebp, %eax - movl %esp, %ebp - pushl %eax - -before_romstage: - post_code(0x2a) - /* 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, %ebx - - post_code(0x2b) - - /* Disable cache. */ - movl %cr0, %eax - orl $CR0_CacheDisable, %eax - movl %eax, %cr0 - - post_code(0x2c) - - /* Disable MTRR. */ - movl $MTRRdefType_MSR, %ecx - rdmsr - andl $(~MTRRdefTypeEn), %eax - wrmsr - - invd - - post_code(0x2d) - - /* Disable the no eviction run state */ - movl $NoEvictMod_MSR, %ecx - rdmsr - andl $~2, %eax - wrmsr - - /* Disable the no eviction mode */ - rdmsr - andl $~1, %eax - wrmsr - - post_code(0x2e) - - /* Setup stack as indicated by return value from ramstage_main(). */ - movl %ebx, %esp - - /* Get number of MTRRs. */ - popl %ebx - movl $MTRRphysBase_MSR(0), %ecx -1: - testl %ebx, %ebx - jz 1f - - /* 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 1b -1: - post_code(0x2f) - - /* And enable cache again after setting MTRRs. */ - movl %cr0, %eax - andl $~(CR0_CacheDisable | CR0_NoWriteThrough), %eax - movl %eax, %cr0 - - post_code(0x30) - - /* Enable MTRR. */ - movl $MTRRdefType_MSR, %ecx - rdmsr - orl $MTRRdefTypeEn, %eax - wrmsr - - post_code(0x31) - -__main: - post_code(POST_PREPARE_RAMSTAGE) - cld /* Clear direction flag. */ - call romstage_after_car - -.Lhlt: - post_code(POST_DEAD_CODE) - hlt - jmp .Lhlt - -/* Fixed MTRRs */ -fixed_mtrr_table: - .word 0x250, 0x258, 0x259 - .word 0x268, 0x269, 0x26A - .word 0x26B, 0x26C, 0x26D - .word 0x26E, 0x26F -fixed_mtrr_table_end: |