diff options
| -rw-r--r-- | src/arch/x86/wakeup.S | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/src/arch/x86/wakeup.S b/src/arch/x86/wakeup.S index 38d6ea43ae..acc8737550 100644 --- a/src/arch/x86/wakeup.S +++ b/src/arch/x86/wakeup.S @@ -32,6 +32,34 @@ .globl __wakeup __wakeup: +#ifdef __x86_64__ + .intel_syntax noprefix + xor rax,rax + mov ax, ss + push rax + mov rax, rsp + add rax, 8 + push rax + pushfq + push 0x10 + lea rax,[rip+3] + push rax + iretq + + .code32 + + /* disable paging */ + mov eax, cr0 + btc eax, 31 + mov cr0, eax + + /* disable long mode */ + mov ecx, 0xC0000080 + rdmsr + btc eax, 8 + wrmsr + .att_syntax prefix +#endif /* First prepare the jmp to the resume vector */ mov 0x4(%esp), %eax /* vector */ /* last 4 bits of linear addr are taken as offset */ |