diff options
Diffstat (limited to 'src/drivers/amd')
| -rw-r--r-- | src/drivers/amd/agesa/cache_as_ram.S | 162 |
1 files changed, 81 insertions, 81 deletions
diff --git a/src/drivers/amd/agesa/cache_as_ram.S b/src/drivers/amd/agesa/cache_as_ram.S index 50242f7a54..09302d7d0e 100644 --- a/src/drivers/amd/agesa/cache_as_ram.S +++ b/src/drivers/amd/agesa/cache_as_ram.S @@ -33,86 +33,86 @@ _cache_as_ram_setup: - /* Preserve BIST. */ - movd %eax, %mm0 + /* Preserve BIST. */ + movd %eax, %mm0 - post_code(0xa0) + post_code(0xa0) - /* enable SSE2 128bit instructions */ - /* Turn on OSFXSR [BIT9] and OSXMMEXCPT [BIT10] onto CR4 register */ + /* enable SSE2 128bit instructions */ + /* Turn on OSFXSR [BIT9] and OSXMMEXCPT [BIT10] onto CR4 register */ - movl %cr4, %eax - orl $(3 << 9), %eax - movl %eax, %cr4 + movl %cr4, %eax + orl $(3 << 9), %eax + movl %eax, %cr4 - post_code(0xa1) + post_code(0xa1) - AMD_ENABLE_STACK + AMD_ENABLE_STACK - /* Align the stack. */ - and $0xFFFFFFF0, %esp + /* 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 + /* 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: #endif - call early_all_cores + call early_all_cores - /* Must maintain 16-byte stack alignment here. */ - pushl $0x0 - pushl $0x0 - pushl $0x0 - movd %mm0, %eax /* bist */ - pushl %eax - call romstage_main + /* Must maintain 16-byte stack alignment here. */ + pushl $0x0 + pushl $0x0 + pushl $0x0 + movd %mm0, %eax /* bist */ + pushl %eax + call romstage_main #if IS_ENABLED(CONFIG_POSTCAR_STAGE) /* We do not return. Execution continues with run_postcar_phase() * calling to chipset_teardown_car below. */ - jmp postcar_entry_failure + jmp postcar_entry_failure chipset_teardown_car: @@ -120,53 +120,53 @@ chipset_teardown_car: * Retrieve return address from stack as it will get trashed below if * execution is utilizing the cache-as-ram stack. */ - pop %esp + pop %esp #else - movl %eax, %esp + movl %eax, %esp /* Register %esp is new stacktop for remaining of romstage. */ #endif - /* Disable cache */ - movl %cr0, %eax - orl $CR0_CacheDisable, %eax - movl %eax, %cr0 + /* Disable cache */ + movl %cr0, %eax + orl $CR0_CacheDisable, %eax + movl %eax, %cr0 /* Register %esp is preserved in AMD_DISABLE_STACK. */ - AMD_DISABLE_STACK + AMD_DISABLE_STACK #if IS_ENABLED(CONFIG_POSTCAR_STAGE) - jmp *%esp + jmp *%esp #else - /* enable cache */ - movl %cr0, %eax - andl $0x9fffffff, %eax - movl %eax, %cr0 + /* enable cache */ + movl %cr0, %eax + andl $0x9fffffff, %eax + movl %eax, %cr0 - call romstage_after_car + call romstage_after_car #endif - /* Should never see this postcode */ - post_code(0xaf) + /* Should never see this postcode */ + post_code(0xaf) stop: - hlt - jmp stop + hlt + jmp stop /* These are here for linking purposes. */ .weak early_all_cores, romstage_main early_all_cores: romstage_main: postcar_entry_failure: - /* Should never see this postcode */ - post_code(0xae) - jmp stop + /* Should never see this postcode */ + post_code(0xae) + jmp stop _cache_as_ram_setup_end: |