diff options
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/kernel/acpi/wakeup_32.S | 12 | ||||
| -rw-r--r-- | arch/x86/kernel/acpi/wakeup_64.S | 32 |
2 files changed, 1 insertions, 43 deletions
diff --git a/arch/x86/kernel/acpi/wakeup_32.S b/arch/x86/kernel/acpi/wakeup_32.S index f22ba8534d2..a97313b1270 100644 --- a/arch/x86/kernel/acpi/wakeup_32.S +++ b/arch/x86/kernel/acpi/wakeup_32.S @@ -11,7 +11,7 @@ # # If physical address of wakeup_code is 0x12345, BIOS should call us with # cs = 0x1234, eip = 0x05 -# +# #define BEEP \ inb $97, %al; \ @@ -52,7 +52,6 @@ wakeup_code: BEEP 1: mov $(wakeup_stack - wakeup_code), %sp # Private stack is needed for ASUS board - movw $0x0e00 + 'S', %fs:(0x12) pushl $0 # Kill any dangerous flags popfl @@ -90,9 +89,6 @@ wakeup_code: # make sure %cr4 is set correctly (features, etc) movl real_save_cr4 - wakeup_code, %eax movl %eax, %cr4 - movw $0xb800, %ax - movw %ax,%fs - movw $0x0e00 + 'i', %fs:(0x12) # need a gdt -- use lgdtl to force 32-bit operands, in case # the GDT is located past 16 megabytes. @@ -102,8 +98,6 @@ wakeup_code: movl %eax, %cr0 jmp 1f 1: - movw $0x0e00 + 'n', %fs:(0x14) - movl real_magic - wakeup_code, %eax cmpl $0x12345678, %eax jne bogus_real_magic @@ -122,13 +116,11 @@ real_save_cr4: .long 0 real_magic: .long 0 video_mode: .long 0 realmode_flags: .long 0 -beep_flags: .long 0 real_efer_save_restore: .long 0 real_save_efer_edx: .long 0 real_save_efer_eax: .long 0 bogus_real_magic: - movw $0x0e00 + 'B', %fs:(0x12) jmp bogus_real_magic /* This code uses an extended set of video mode numbers. These include: @@ -194,7 +186,6 @@ wakeup_pmode_return: movw %ax, %es movw %ax, %fs movw %ax, %gs - movw $0x0e00 + 'u', 0xb8016 # reload the gdt, as we need the full 32 bit address lgdt saved_gdt @@ -218,7 +209,6 @@ wakeup_pmode_return: jmp *%eax bogus_magic: - movw $0x0e00 + 'B', 0xb8018 jmp bogus_magic diff --git a/arch/x86/kernel/acpi/wakeup_64.S b/arch/x86/kernel/acpi/wakeup_64.S index 8b4357e1efe..55608ec2ed7 100644 --- a/arch/x86/kernel/acpi/wakeup_64.S +++ b/arch/x86/kernel/acpi/wakeup_64.S @@ -41,7 +41,6 @@ wakeup_code: # Running in *copy* of this code, somewhere in low 1MB. - movb $0xa1, %al ; outb %al, $0x80 cli cld # setup data segment @@ -65,11 +64,6 @@ wakeup_code: cmpl $0x12345678, %eax jne bogus_real_magic - call verify_cpu # Verify the cpu supports long - # mode - testl %eax, %eax - jnz no_longmode - testl $1, realmode_flags - wakeup_code jz 1f lcall $0xc000,$3 @@ -84,12 +78,6 @@ wakeup_code: call mode_set 1: - movw $0xb800, %ax - movw %ax,%fs - movw $0x0e00 + 'L', %fs:(0x10) - - movb $0xa2, %al ; outb %al, $0x80 - mov %ds, %ax # Find 32bit wakeup_code addr movzx %ax, %esi # (Convert %ds:gdt to a liner ptr) shll $4, %esi @@ -117,14 +105,10 @@ wakeup_32_vector: .code32 wakeup_32: # Running in this code, but at low address; paging is not yet turned on. - movb $0xa5, %al ; outb %al, $0x80 movl $__KERNEL_DS, %eax movl %eax, %ds - movw $0x0e00 + 'i', %ds:(0xb8012) - movb $0xa8, %al ; outb %al, $0x80; - /* * Prepare for entering 64bits mode */ @@ -200,16 +184,11 @@ wakeup_long64: */ lgdt cpu_gdt_descr - movw $0x0e00 + 'n', %ds:(0xb8014) - movb $0xa9, %al ; outb %al, $0x80 - movq saved_magic, %rax movq $0x123456789abcdef0, %rdx cmpq %rdx, %rax jne bogus_64_magic - movw $0x0e00 + 'u', %ds:(0xb8016) - nop nop movw $__KERNEL_DS, %ax @@ -220,13 +199,11 @@ wakeup_long64: movw %ax, %gs movq saved_rsp, %rsp - movw $0x0e00 + 'x', %ds:(0xb8018) movq saved_rbx, %rbx movq saved_rdi, %rdi movq saved_rsi, %rsi movq saved_rbp, %rbp - movw $0x0e00 + '!', %ds:(0xb801a) movq saved_rip, %rax jmp *%rax @@ -256,21 +233,12 @@ realmode_flags: .quad 0 .code16 bogus_real_magic: - movb $0xba,%al ; outb %al,$0x80 jmp bogus_real_magic .code64 bogus_64_magic: - movb $0xb3,%al ; outb %al,$0x80 jmp bogus_64_magic -.code16 -no_longmode: - movb $0xbc,%al ; outb %al,$0x80 - jmp no_longmode - -#include "../verify_cpu_64.S" - /* This code uses an extended set of video mode numbers. These include: * Aliases for standard modes * NORMAL_VGA (-1) |