diff options
Diffstat (limited to 'src/cpu/amd')
| -rw-r--r-- | src/cpu/amd/agesa/Makefile.inc | 4 | ||||
| -rw-r--r-- | src/cpu/amd/agesa/cache_as_ram_legacy.inc | 170 |
2 files changed, 174 insertions, 0 deletions
diff --git a/src/cpu/amd/agesa/Makefile.inc b/src/cpu/amd/agesa/Makefile.inc index 60bae120bc..9853d63c5f 100644 --- a/src/cpu/amd/agesa/Makefile.inc +++ b/src/cpu/amd/agesa/Makefile.inc @@ -23,7 +23,11 @@ subdirs-$(CONFIG_CPU_AMD_AGESA_FAMILY16_KB) += family16kb romstage-y += s3_resume.c ramstage-y += s3_mtrr.c +ifeq ($(CONFIG_AGESA_LEGACY), y) +cpu_incs-y += $(src)/cpu/amd/agesa/cache_as_ram_legacy.inc +else cpu_incs-y += $(src)/cpu/amd/agesa/cache_as_ram.inc +endif romstage-y += heapmanager.c ramstage-y += heapmanager.c diff --git a/src/cpu/amd/agesa/cache_as_ram_legacy.inc b/src/cpu/amd/agesa/cache_as_ram_legacy.inc new file mode 100644 index 0000000000..c0a69ec74a --- /dev/null +++ b/src/cpu/amd/agesa/cache_as_ram_legacy.inc @@ -0,0 +1,170 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2011 Advanced Micro Devices, Inc. + * + * 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. + */ + +/****************************************************************************** + * AMD Generic Encapsulated Software Architecture + * + * $Workfile:: cache_as_ram.inc + * + * Description: cache_as_ram.inc - AGESA Module Entry Point for GCC complier + * + ****************************************************************************** + */ + +#include "gcccar.inc" +#include <cpu/x86/cache.h> + +/* + * XMM map: + * xmm0: BIST + * xmm1: backup ebx -- cpu_init_detected + */ + +.code32 +.globl cache_as_ram_setup, disable_cache_as_ram, cache_as_ram_setup_out + +cache_as_ram_setup: + + post_code(0xa0) + + /* enable SSE2 128bit instructions */ + /* Turn on OSFXSR [BIT9] and OSXMMEXCPT [BIT10] onto CR4 register */ + + movl %cr4, %eax + orl $(3<<9), %eax + movl %eax, %cr4 + + /* Get the cpu_init_detected */ + mov $1, %eax + cpuid + shr $24, %ebx + + /* Save the BIST result */ + cvtsi2sd %ebp, %xmm0 + + /* for normal part %ebx already contain cpu_init_detected from fallback call */ + + /* Save the cpu_init_detected */ + cvtsi2sd %ebx, %xmm1 + + post_code(0xa1) + + AMD_ENABLE_STACK + + /* Align the stack. */ + and $0xFFFFFFF0, %esp + +#ifdef __x86_64__ + /* switch to 64 bit long mode */ + mov %esi, %ecx + add $0, %ecx # core number + xor %eax, %eax + lea (0x1000+0x23)(%ecx), %edi + mov %edi, (%ecx) + mov %eax, 4(%ecx) + + lea 0x1000(%ecx), %edi + movl $0x000000e3, 0x00(%edi) + movl %eax, 0x04(%edi) + movl $0x400000e3, 0x08(%edi) + movl %eax, 0x0c(%edi) + movl $0x800000e3, 0x10(%edi) + movl %eax, 0x14(%edi) + movl $0xc00000e3, 0x18(%edi) + movl %eax, 0x1c(%edi) + + # load ROM based identity mapped page tables + mov %ecx, %eax + mov %eax, %cr3 + + # enable PAE + mov %cr4, %eax + bts $5, %eax + mov %eax, %cr4 + + # enable long mode + mov $0xC0000080, %ecx + rdmsr + bts $8, %eax + wrmsr + + # enable paging + mov %cr0, %eax + bts $31, %eax + mov %eax, %cr0 + + # use call far to switch to 64-bit code segment + ljmp $0x18, $1f +1: + /* Pass the cpu_init_detected */ + cvtsd2si %xmm1, %esi + + /* Pass the BIST result */ + cvtsd2si %xmm0, %edi + + + .code64 + call cache_as_ram_main + .code32 + +#else + + /* Restore the BIST result */ + cvtsd2si %xmm0, %edx + + /* Restore the cpu_init_detected */ + cvtsd2si %xmm1, %ebx + + /* Must maintain 16-byte stack alignment here. */ + pushl $0x0 + pushl $0x0 + pushl %ebx /* init detected */ + pushl %edx /* bist */ + call cache_as_ram_main +#endif + + /* Should never see this postcode */ + post_code(0xaf) +stop: + jmp stop + +disable_cache_as_ram: + /* Save return stack */ + movd 0(%esp), %xmm1 + movd %esp, %xmm0 + + /* Disable cache */ + movl %cr0, %eax + orl $CR0_CacheDisable, %eax + movl %eax, %cr0 + + AMD_DISABLE_STACK + + /* enable cache */ + movl %cr0, %eax + andl $0x9fffffff, %eax + movl %eax, %cr0 + xorl %eax, %eax + + /* Restore the return stack */ + wbinvd + movd %xmm0, %esp + movd %xmm1, (%esp) + ret + +cache_as_ram_setup_out: +#ifdef __x86_64__ +.code64 +#endif |