| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <cpu/x86/post_code.h> |
| |
| .global bootblock_resume_entry |
| bootblock_resume_entry: |
| post_code(0xb0) |
| |
| /* Get an early timestamp */ |
| rdtsc |
| movd %eax, %mm1 |
| movd %edx, %mm2 |
| |
| /* Fall through to bootblock_pre_c_entry */ |
| |
| /* |
| * on entry: |
| * mm0: BIST (ignored) |
| * mm2_mm1: timestamp at bootblock_protected_mode_entry |
| */ |
| |
| .global bootblock_pre_c_entry |
| bootblock_pre_c_entry: |
| post_code(0xa0) |
| |
| /* Clear .bss section */ |
| cld |
| xor %eax, %eax |
| movl $(_ebss), %ecx |
| movl $(_bss), %edi |
| sub %edi, %ecx |
| shrl $2, %ecx |
| rep stosl |
| |
| movl $_eearlyram_stack, %esp |
| |
| /* Align the stack and keep aligned for call to bootblock_c_entry() */ |
| and $0xfffffff0, %esp |
| sub $8, %esp |
| |
| movd %mm2, %eax |
| pushl %eax /* tsc[63:32] */ |
| movd %mm1, %eax |
| pushl %eax /* tsc[31:0] */ |
| |
| post_code(0xa2) |
| |
| call bootblock_c_entry |
| /* Never reached */ |
| |
| .halt_forever: |
| post_code(POST_DEAD_CODE) |
| hlt |
| jmp .halt_forever |