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/* SPDX-License-Identifier: GPL-2.0-only */
#include <amdblocks/post_codes.h>
#include <cpu/x86/post_code.h>
.section .init, "ax", @progbits
.global bootblock_resume_entry
bootblock_resume_entry:
post_code(POST_BOOTBLOCK_RESUME_ENTRY)
/* 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
*/
.global bootblock_pre_c_entry
bootblock_pre_c_entry:
post_code(POST_BOOTBLOCK_PRE_C_ENTRY)
#if ENV_X86_64
#include <cpu/x86/64bit/entry64.inc>
#endif
/* 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
#if ENV_X86_64
movd %mm2, %rdi
shlq $32, %rdi
movd %mm1, %rsi
or %rsi, %rdi
#else
movd %mm2, %eax
pushl %eax /* tsc[63:32] */
movd %mm1, %eax
pushl %eax /* tsc[31:0] */
#endif
post_code(POST_BOOTBLOCK_PRE_C_DONE)
call bootblock_c_entry
/* Never reached */
.halt_forever:
post_code(POST_DEAD_CODE)
hlt
jmp .halt_forever
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