AuxXxilium/linux_dsm_epyc7002
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s2ram: kill old debugging junk

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This removes old debugging stuff, that should be no longer neccessary.  It
accessed VGA hardware (which may not be ready at this point), and used LEDs
at port 80 for debugging.

Signed-off-by: Pavel Machek <pavel@suse.cz>
Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Pavel Machek 2007-10-18 03:04:51 -07:00 committed by Linus Torvalds
parent 8f4ce8c32f
commit 50a1efe14f
2 changed files with 1 additions and 43 deletions
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12
arch/x86/kernel/acpi/wakeup_32.S
View File

@ -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

32
arch/x86/kernel/acpi/wakeup_64.S
View File

@ -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)