mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-11-15 07:58:06 +02:00
123 lines
1.8 KiB
ArmAsm
123 lines
1.8 KiB
ArmAsm
|
.text
|
||
|
|
#include <linux/linkage.h>
|
||
|
|
#include <asm/segment.h>
|
||
|
|
#include <asm/page.h>
|
||
|
|
|
||
|
|
ALIGN
|
||
|
|
.align 4096
|
||
|
|
|
||
|
|
wakeup_start:
|
||
|
|
# jmp wakeup_start
|
||
|
|
|
||
|
|
cli
|
||
|
|
cld
|
||
|
|
|
||
|
|
# Clear any dangerous flags
|
||
|
|
|
||
|
|
pushl $0
|
||
|
|
popfl
|
||
|
|
|
||
|
|
# Set up %cr3
|
||
|
|
movl $swsusp_pg_dir - __PAGE_OFFSET, %eax
|
||
|
|
movl %eax, %cr3
|
||
|
|
|
||
|
|
movl saved_cr4, %eax
|
||
|
|
movl %eax, %cr4
|
||
|
|
|
||
|
|
movl saved_cr0, %eax
|
||
|
|
movl %eax, %cr0
|
||
|
|
|
||
|
|
jmp 1f
|
||
|
|
1:
|
||
|
|
ljmpl $__KERNEL_CS,$wakeup_return
|
||
|
|
|
||
|
|
|
||
|
|
.org 0x1000
|
||
|
|
|
||
|
|
wakeup_return:
|
||
|
|
movw $__KERNEL_DS, %ax
|
||
|
|
movw %ax, %ss
|
||
|
|
movw %ax, %ds
|
||
|
|
movw %ax, %es
|
||
|
|
movw %ax, %fs
|
||
|
|
movw %ax, %gs
|
||
|
|
|
||
|
|
lgdt saved_gdt
|
||
|
|
lidt saved_idt
|
||
|
|
lldt saved_ldt
|
||
|
|
ljmp $(__KERNEL_CS),$1f
|
||
|
|
1:
|
||
|
|
movl %cr3, %eax
|
||
|
|
movl %eax, %cr3
|
||
|
|
wbinvd
|
||
|
|
|
||
|
|
# Go back to the return point
|
||
|
|
jmp ret_point
|
||
|
|
|
||
|
|
save_registers:
|
||
|
|
sgdt saved_gdt
|
||
|
|
sidt saved_idt
|
||
|
|
sldt saved_ldt
|
||
|
|
|
||
|
|
pushl %edx
|
||
|
|
movl %cr4, %edx
|
||
|
|
movl %edx, saved_cr4
|
||
|
|
|
||
|
|
movl %cr0, %edx
|
||
|
|
movl %edx, saved_cr0
|
||
|
|
|
||
|
|
popl %edx
|
||
|
|
|
||
|
|
|
||
|
|
movl %ebx, saved_context_ebx
|
||
|
|
movl %ebp, saved_context_ebp
|
||
|
|
movl %esi, saved_context_esi
|
||
|
|
movl %edi, saved_context_edi
|
||
|
|
|
||
|
|
pushfl
|
||
|
|
popl saved_context_eflags
|
||
|
|
|
||
|
|
ret
|
||
|
|
|
||
|
|
|
||
|
|
restore_registers:
|
||
|
|
movl saved_context_ebp, %ebp
|
||
|
|
movl saved_context_ebx, %ebx
|
||
|
|
movl saved_context_esi, %esi
|
||
|
|
movl saved_context_edi, %edi
|
||
|
|
|
||
|
|
pushl saved_context_eflags
|
||
|
|
popfl
|
||
|
|
|
||
|
|
ret
|
||
|
|
|
||
|
|
|
||
|
|
ENTRY(do_olpc_suspend_lowlevel)
|
||
|
|
call save_processor_state
|
||
|
|
call save_registers
|
||
|
|
|
||
|
|
# This is the stack context we want to remember
|
||
|
|
movl %esp, saved_context_esp
|
||
|
|
|
||
|
|
pushl $3
|
||
|
|
call olpc_do_sleep
|
||
|
|
|
||
|
|
jmp wakeup_start
|
||
|
|
.p2align 4,,7
|
||
|
|
ret_point:
|
||
|
|
movl saved_context_esp, %esp
|
||
|
|
|
||
|
|
call restore_registers
|
||
|
|
call restore_processor_state
|
||
|
|
ret
|
||
|
|
|
||
|
|
.data
|
||
|
|
ALIGN
|
||
|
|
|
||
|
|
saved_gdt: .long 0,0
|
||
|
|
saved_idt: .long 0,0
|
||
|
|
saved_ldt: .long 0
|
||
|
|
saved_cr4: .long 0
|
||
|
|
saved_cr0: .long 0
|
||
|
|
|