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| author | Stefan Reinauer <reinauer@chromium.org> | 2015-07-21 13:34:01 -0700 |
|---|---|---|
| committer | Stefan Reinauer <stefan.reinauer@coreboot.org> | 2015-10-30 23:08:05 +0100 |
| commit | f7613ecacc02d486caa868a1f494dc46983aeb3d (patch) | |
| tree | 6bbbc70f47a22768a641e45a4891a5fb01dd9210 /src/cpu/amd/pi/cache_as_ram.inc | |
| parent | 42444f6f53d47604d9a44c9e109b5717efaed74f (diff) | |
| download | coreboot-f7613ecacc02d486caa868a1f494dc46983aeb3d.tar.gz coreboot-f7613ecacc02d486caa868a1f494dc46983aeb3d.tar.bz2 coreboot-f7613ecacc02d486caa868a1f494dc46983aeb3d.zip | |
cpu: port amd/pi to 64bit
Change-Id: I66ef081fa1a520f0199366587800783ea1ef8719
Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-on: http://review.coreboot.org/11023
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Tested-by: build bot (Jenkins)
Diffstat (limited to 'src/cpu/amd/pi/cache_as_ram.inc')
| -rw-r--r-- | src/cpu/amd/pi/cache_as_ram.inc | 67 |
1 files changed, 64 insertions, 3 deletions
diff --git a/src/cpu/amd/pi/cache_as_ram.inc b/src/cpu/amd/pi/cache_as_ram.inc index a8dbee8573b3..7b2964c48274 100644 --- a/src/cpu/amd/pi/cache_as_ram.inc +++ b/src/cpu/amd/pi/cache_as_ram.inc @@ -64,10 +64,67 @@ cache_as_ram_setup: cvtsi2sd %ebx, %xmm1 post_code(0xa1) - AMD_ENABLE_STACK - - post_code(0xa1) + AMD_ENABLE_STACK +#ifdef __x86_64__ + /* switch to 64 bit long mode */ + .intel_syntax noprefix + + mov ecx, esi + add ecx, 0 # core number + xor eax, eax + lea edi, [ecx+0x1000+0x23] + mov dword ptr [ecx+0], edi + mov dword ptr [ecx+4], eax + + lea edi, [ecx+0x1000] + mov dword ptr [edi+0x00], 0x000000e3 + mov dword ptr [edi+0x04], eax + mov dword ptr [edi+0x08], 0x400000e3 + mov dword ptr [edi+0x0c], eax + mov dword ptr [edi+0x10], 0x800000e3 + mov dword ptr [edi+0x14], eax + mov dword ptr [edi+0x18], 0xc00000e3 + mov dword ptr [edi+0x1c], eax + + # load rom based identity mapped page tables + mov eax, ecx + mov cr3,eax + + # enable PAE + mov eax, cr4 + bts eax, 5 + mov cr4, eax + + # enable long mode + mov ecx, 0xC0000080 + rdmsr + bts eax, 8 + wrmsr + + # enable paging + mov eax, cr0 + bts eax, 31 + mov cr0, eax + + # use call far to switch to 64-bit code segment + jmp 0x18,.+7 + + /* Pass the BIST result */ + cvtsd2si esi, xmm1 + + /* Pass the cpu_init_detected */ + cvtsd2si edi, xmm0 + + /* align the stack */ + and esp, 0xFFFFFFF0 + + .code64 + call cache_as_ram_main + .code32 + + .att_syntax prefix +#else /* Restore the BIST result */ cvtsd2si %xmm0, %edx @@ -77,6 +134,7 @@ cache_as_ram_setup: pushl %ebx /* init detected */ pushl %edx /* bist */ call cache_as_ram_main +#endif /* Should never see this postcode */ post_code(0xaf) @@ -108,3 +166,6 @@ disable_cache_as_ram: ret cache_as_ram_setup_out: +#ifdef __x86_64__ +.code64 +#endif |