diff options
Diffstat (limited to 'arch/x86/cpu/start16.S')
| -rw-r--r-- | arch/x86/cpu/start16.S | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/arch/x86/cpu/start16.S b/arch/x86/cpu/start16.S index 6968fda649..9550502e9a 100644 --- a/arch/x86/cpu/start16.S +++ b/arch/x86/cpu/start16.S @@ -21,18 +21,16 @@ .code16 .globl start16 start16: + /* Save BIST */ + movl %eax, %ecx + /* Set the Cold Boot / Hard Reset flag */ movl $GD_FLG_COLD_BOOT, %ebx - /* - * First we let the BSP do some early initialization - * this code have to map the flash to its final position - */ - jmp board_init16 -.globl board_init16_ret -board_init16_ret: + xorl %eax, %eax + movl %eax, %cr3 /* Invalidate TLB */ - /* Turn of cache (this might require a 486-class CPU) */ + /* Turn off cache (this might require a 486-class CPU) */ movl %cr0, %eax orl $(X86_CR0_NW | X86_CR0_CD), %eax movl %eax, %cr0 @@ -50,9 +48,11 @@ o32 cs lgdt gdt_ptr /* Flush the prefetch queue */ jmp ff ff: - /* Finally jump to the 32bit initialization code */ + + /* Finally restore BIST and jump to the 32bit initialization code */ movw $code32start, %ax movw %ax, %bp + movl %ecx, %eax o32 cs ljmp *(%bp) /* 48-bit far pointer */ |