obj-y := boot.o
boot-y := ../../../i386/kernel/acpi/boot.o
-obj-$(CONFIG_ACPI_SLEEP) += sleep.o wakeup.o
+obj-$(CONFIG_ACPI_SLEEP) += sleep.o wakeup_64.o
ifneq ($(CONFIG_ACPI_PROCESSOR),)
obj-y += processor.o
+++ /dev/null
-.text
-#include <linux/linkage.h>
-#include <asm/segment.h>
-#include <asm/pgtable.h>
-#include <asm/page.h>
-#include <asm/msr.h>
-
-# Copyright 2003 Pavel Machek <pavel@suse.cz>, distribute under GPLv2
-#
-# wakeup_code runs in real mode, and at unknown address (determined at run-time).
-# Therefore it must only use relative jumps/calls.
-#
-# Do we need to deal with A20? It is okay: ACPI specs says A20 must be enabled
-#
-# If physical address of wakeup_code is 0x12345, BIOS should call us with
-# cs = 0x1234, eip = 0x05
-#
-
-#define BEEP \
- inb $97, %al; \
- outb %al, $0x80; \
- movb $3, %al; \
- outb %al, $97; \
- outb %al, $0x80; \
- movb $-74, %al; \
- outb %al, $67; \
- outb %al, $0x80; \
- movb $-119, %al; \
- outb %al, $66; \
- outb %al, $0x80; \
- movb $15, %al; \
- outb %al, $66;
-
-
-ALIGN
- .align 16
-ENTRY(wakeup_start)
-wakeup_code:
- wakeup_code_start = .
- .code16
-
-# Running in *copy* of this code, somewhere in low 1MB.
-
- movb $0xa1, %al ; outb %al, $0x80
- cli
- cld
- # setup data segment
- movw %cs, %ax
- movw %ax, %ds # Make ds:0 point to wakeup_start
- movw %ax, %ss
-
- # Data segment must be set up before we can see whether to beep.
- testl $4, realmode_flags - wakeup_code
- jz 1f
- BEEP
-1:
-
- # Private stack is needed for ASUS board
- mov $(wakeup_stack - wakeup_code), %sp
-
- pushl $0 # Kill any dangerous flags
- popfl
-
- movl real_magic - wakeup_code, %eax
- 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
- movw %cs, %ax
- movw %ax, %ds # Bios might have played with that
- movw %ax, %ss
-1:
-
- testl $2, realmode_flags - wakeup_code
- jz 1f
- mov video_mode - wakeup_code, %ax
- 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
- # Fix up the vectors
- addl %esi, wakeup_32_vector - wakeup_code
- addl %esi, wakeup_long64_vector - wakeup_code
- addl %esi, gdt_48a + 2 - wakeup_code # Fixup the gdt pointer
-
- lidtl %ds:idt_48a - wakeup_code
- lgdtl %ds:gdt_48a - wakeup_code # load gdt with whatever is
- # appropriate
-
- movl $1, %eax # protected mode (PE) bit
- lmsw %ax # This is it!
- jmp 1f
-1:
-
- ljmpl *(wakeup_32_vector - wakeup_code)
-
- .balign 4
-wakeup_32_vector:
- .long wakeup_32 - wakeup_code
- .word __KERNEL32_CS, 0
-
- .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
- */
-
- /* Enable PAE */
- xorl %eax, %eax
- btsl $5, %eax
- movl %eax, %cr4
-
- /* Setup early boot stage 4 level pagetables */
- leal (wakeup_level4_pgt - wakeup_code)(%esi), %eax
- movl %eax, %cr3
-
- /* Check if nx is implemented */
- movl $0x80000001, %eax
- cpuid
- movl %edx,%edi
-
- /* Enable Long Mode */
- xorl %eax, %eax
- btsl $_EFER_LME, %eax
-
- /* No Execute supported? */
- btl $20,%edi
- jnc 1f
- btsl $_EFER_NX, %eax
-
- /* Make changes effective */
-1: movl $MSR_EFER, %ecx
- xorl %edx, %edx
- wrmsr
-
- xorl %eax, %eax
- btsl $31, %eax /* Enable paging and in turn activate Long Mode */
- btsl $0, %eax /* Enable protected mode */
-
- /* Make changes effective */
- movl %eax, %cr0
-
- /* At this point:
- CR4.PAE must be 1
- CS.L must be 0
- CR3 must point to PML4
- Next instruction must be a branch
- This must be on identity-mapped page
- */
- /*
- * At this point we're in long mode but in 32bit compatibility mode
- * with EFER.LME = 1, CS.L = 0, CS.D = 1 (and in turn
- * EFER.LMA = 1). Now we want to jump in 64bit mode, to do that we load
- * the new gdt/idt that has __KERNEL_CS with CS.L = 1.
- */
-
- /* Finally jump in 64bit mode */
- ljmp *(wakeup_long64_vector - wakeup_code)(%esi)
-
- .balign 4
-wakeup_long64_vector:
- .long wakeup_long64 - wakeup_code
- .word __KERNEL_CS, 0
-
-.code64
-
- /* Hooray, we are in Long 64-bit mode (but still running in
- * low memory)
- */
-wakeup_long64:
- /*
- * We must switch to a new descriptor in kernel space for the GDT
- * because soon the kernel won't have access anymore to the userspace
- * addresses where we're currently running on. We have to do that here
- * because in 32bit we couldn't load a 64bit linear address.
- */
- 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
- movw %ax, %ss
- movw %ax, %ds
- movw %ax, %es
- movw %ax, %fs
- 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
-
-.code32
-
- .align 64
-gdta:
- /* Its good to keep gdt in sync with one in trampoline.S */
- .word 0, 0, 0, 0 # dummy
- /* ??? Why I need the accessed bit set in order for this to work? */
- .quad 0x00cf9b000000ffff # __KERNEL32_CS
- .quad 0x00af9b000000ffff # __KERNEL_CS
- .quad 0x00cf93000000ffff # __KERNEL_DS
-
-idt_48a:
- .word 0 # idt limit = 0
- .word 0, 0 # idt base = 0L
-
-gdt_48a:
- .word 0x800 # gdt limit=2048,
- # 256 GDT entries
- .long gdta - wakeup_code # gdt base (relocated in later)
-
-real_magic: .quad 0
-video_mode: .quad 0
-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)
- * EXTENDED_VGA (-2)
- * ASK_VGA (-3)
- * Video modes numbered by menu position -- NOT RECOMMENDED because of lack
- * of compatibility when extending the table. These are between 0x00 and 0xff.
- */
-#define VIDEO_FIRST_MENU 0x0000
-
-/* Standard BIOS video modes (BIOS number + 0x0100) */
-#define VIDEO_FIRST_BIOS 0x0100
-
-/* VESA BIOS video modes (VESA number + 0x0200) */
-#define VIDEO_FIRST_VESA 0x0200
-
-/* Video7 special modes (BIOS number + 0x0900) */
-#define VIDEO_FIRST_V7 0x0900
-
-# Setting of user mode (AX=mode ID) => CF=success
-
-# For now, we only handle VESA modes (0x0200..0x03ff). To handle other
-# modes, we should probably compile in the video code from the boot
-# directory.
-.code16
-mode_set:
- movw %ax, %bx
- subb $VIDEO_FIRST_VESA>>8, %bh
- cmpb $2, %bh
- jb check_vesa
-
-setbad:
- clc
- ret
-
-check_vesa:
- orw $0x4000, %bx # Use linear frame buffer
- movw $0x4f02, %ax # VESA BIOS mode set call
- int $0x10
- cmpw $0x004f, %ax # AL=4f if implemented
- jnz setbad # AH=0 if OK
-
- stc
- ret
-
-wakeup_stack_begin: # Stack grows down
-
-.org 0xff0
-wakeup_stack: # Just below end of page
-
-.org 0x1000
-ENTRY(wakeup_level4_pgt)
- .quad level3_ident_pgt - __START_KERNEL_map + _KERNPG_TABLE
- .fill 510,8,0
- /* (2^48-(2*1024*1024*1024))/(2^39) = 511 */
- .quad level3_kernel_pgt - __START_KERNEL_map + _KERNPG_TABLE
-
-ENTRY(wakeup_end)
-
-##
-# acpi_copy_wakeup_routine
-#
-# Copy the above routine to low memory.
-#
-# Parameters:
-# %rdi: place to copy wakeup routine to
-#
-# Returned address is location of code in low memory (past data and stack)
-#
- .code64
-ENTRY(acpi_copy_wakeup_routine)
- pushq %rax
- pushq %rdx
-
- movl saved_video_mode, %edx
- movl %edx, video_mode - wakeup_start (,%rdi)
- movl acpi_realmode_flags, %edx
- movl %edx, realmode_flags - wakeup_start (,%rdi)
- movq $0x12345678, real_magic - wakeup_start (,%rdi)
- movq $0x123456789abcdef0, %rdx
- movq %rdx, saved_magic
-
- movq saved_magic, %rax
- movq $0x123456789abcdef0, %rdx
- cmpq %rdx, %rax
- jne bogus_64_magic
-
- # restore the regs we used
- popq %rdx
- popq %rax
-ENTRY(do_suspend_lowlevel_s4bios)
- ret
-
- .align 2
- .p2align 4,,15
-.globl do_suspend_lowlevel
- .type do_suspend_lowlevel,@function
-do_suspend_lowlevel:
-.LFB5:
- subq $8, %rsp
- xorl %eax, %eax
- call save_processor_state
-
- movq %rsp, saved_context_esp(%rip)
- movq %rax, saved_context_eax(%rip)
- movq %rbx, saved_context_ebx(%rip)
- movq %rcx, saved_context_ecx(%rip)
- movq %rdx, saved_context_edx(%rip)
- movq %rbp, saved_context_ebp(%rip)
- movq %rsi, saved_context_esi(%rip)
- movq %rdi, saved_context_edi(%rip)
- movq %r8, saved_context_r08(%rip)
- movq %r9, saved_context_r09(%rip)
- movq %r10, saved_context_r10(%rip)
- movq %r11, saved_context_r11(%rip)
- movq %r12, saved_context_r12(%rip)
- movq %r13, saved_context_r13(%rip)
- movq %r14, saved_context_r14(%rip)
- movq %r15, saved_context_r15(%rip)
- pushfq ; popq saved_context_eflags(%rip)
-
- movq $.L97, saved_rip(%rip)
-
- movq %rsp,saved_rsp
- movq %rbp,saved_rbp
- movq %rbx,saved_rbx
- movq %rdi,saved_rdi
- movq %rsi,saved_rsi
-
- addq $8, %rsp
- movl $3, %edi
- xorl %eax, %eax
- jmp acpi_enter_sleep_state
-.L97:
- .p2align 4,,7
-.L99:
- .align 4
- movl $24, %eax
- movw %ax, %ds
- movq saved_context+58(%rip), %rax
- movq %rax, %cr4
- movq saved_context+50(%rip), %rax
- movq %rax, %cr3
- movq saved_context+42(%rip), %rax
- movq %rax, %cr2
- movq saved_context+34(%rip), %rax
- movq %rax, %cr0
- pushq saved_context_eflags(%rip) ; popfq
- movq saved_context_esp(%rip), %rsp
- movq saved_context_ebp(%rip), %rbp
- movq saved_context_eax(%rip), %rax
- movq saved_context_ebx(%rip), %rbx
- movq saved_context_ecx(%rip), %rcx
- movq saved_context_edx(%rip), %rdx
- movq saved_context_esi(%rip), %rsi
- movq saved_context_edi(%rip), %rdi
- movq saved_context_r08(%rip), %r8
- movq saved_context_r09(%rip), %r9
- movq saved_context_r10(%rip), %r10
- movq saved_context_r11(%rip), %r11
- movq saved_context_r12(%rip), %r12
- movq saved_context_r13(%rip), %r13
- movq saved_context_r14(%rip), %r14
- movq saved_context_r15(%rip), %r15
-
- xorl %eax, %eax
- addq $8, %rsp
- jmp restore_processor_state
-.LFE5:
-.Lfe5:
- .size do_suspend_lowlevel,.Lfe5-do_suspend_lowlevel
-
-.data
-ALIGN
-ENTRY(saved_rbp) .quad 0
-ENTRY(saved_rsi) .quad 0
-ENTRY(saved_rdi) .quad 0
-ENTRY(saved_rbx) .quad 0
-
-ENTRY(saved_rip) .quad 0
-ENTRY(saved_rsp) .quad 0
-
-ENTRY(saved_magic) .quad 0
--- /dev/null
+.text
+#include <linux/linkage.h>
+#include <asm/segment.h>
+#include <asm/pgtable.h>
+#include <asm/page.h>
+#include <asm/msr.h>
+
+# Copyright 2003 Pavel Machek <pavel@suse.cz>, distribute under GPLv2
+#
+# wakeup_code runs in real mode, and at unknown address (determined at run-time).
+# Therefore it must only use relative jumps/calls.
+#
+# Do we need to deal with A20? It is okay: ACPI specs says A20 must be enabled
+#
+# If physical address of wakeup_code is 0x12345, BIOS should call us with
+# cs = 0x1234, eip = 0x05
+#
+
+#define BEEP \
+ inb $97, %al; \
+ outb %al, $0x80; \
+ movb $3, %al; \
+ outb %al, $97; \
+ outb %al, $0x80; \
+ movb $-74, %al; \
+ outb %al, $67; \
+ outb %al, $0x80; \
+ movb $-119, %al; \
+ outb %al, $66; \
+ outb %al, $0x80; \
+ movb $15, %al; \
+ outb %al, $66;
+
+
+ALIGN
+ .align 16
+ENTRY(wakeup_start)
+wakeup_code:
+ wakeup_code_start = .
+ .code16
+
+# Running in *copy* of this code, somewhere in low 1MB.
+
+ movb $0xa1, %al ; outb %al, $0x80
+ cli
+ cld
+ # setup data segment
+ movw %cs, %ax
+ movw %ax, %ds # Make ds:0 point to wakeup_start
+ movw %ax, %ss
+
+ # Data segment must be set up before we can see whether to beep.
+ testl $4, realmode_flags - wakeup_code
+ jz 1f
+ BEEP
+1:
+
+ # Private stack is needed for ASUS board
+ mov $(wakeup_stack - wakeup_code), %sp
+
+ pushl $0 # Kill any dangerous flags
+ popfl
+
+ movl real_magic - wakeup_code, %eax
+ 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
+ movw %cs, %ax
+ movw %ax, %ds # Bios might have played with that
+ movw %ax, %ss
+1:
+
+ testl $2, realmode_flags - wakeup_code
+ jz 1f
+ mov video_mode - wakeup_code, %ax
+ 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
+ # Fix up the vectors
+ addl %esi, wakeup_32_vector - wakeup_code
+ addl %esi, wakeup_long64_vector - wakeup_code
+ addl %esi, gdt_48a + 2 - wakeup_code # Fixup the gdt pointer
+
+ lidtl %ds:idt_48a - wakeup_code
+ lgdtl %ds:gdt_48a - wakeup_code # load gdt with whatever is
+ # appropriate
+
+ movl $1, %eax # protected mode (PE) bit
+ lmsw %ax # This is it!
+ jmp 1f
+1:
+
+ ljmpl *(wakeup_32_vector - wakeup_code)
+
+ .balign 4
+wakeup_32_vector:
+ .long wakeup_32 - wakeup_code
+ .word __KERNEL32_CS, 0
+
+ .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
+ */
+
+ /* Enable PAE */
+ xorl %eax, %eax
+ btsl $5, %eax
+ movl %eax, %cr4
+
+ /* Setup early boot stage 4 level pagetables */
+ leal (wakeup_level4_pgt - wakeup_code)(%esi), %eax
+ movl %eax, %cr3
+
+ /* Check if nx is implemented */
+ movl $0x80000001, %eax
+ cpuid
+ movl %edx,%edi
+
+ /* Enable Long Mode */
+ xorl %eax, %eax
+ btsl $_EFER_LME, %eax
+
+ /* No Execute supported? */
+ btl $20,%edi
+ jnc 1f
+ btsl $_EFER_NX, %eax
+
+ /* Make changes effective */
+1: movl $MSR_EFER, %ecx
+ xorl %edx, %edx
+ wrmsr
+
+ xorl %eax, %eax
+ btsl $31, %eax /* Enable paging and in turn activate Long Mode */
+ btsl $0, %eax /* Enable protected mode */
+
+ /* Make changes effective */
+ movl %eax, %cr0
+
+ /* At this point:
+ CR4.PAE must be 1
+ CS.L must be 0
+ CR3 must point to PML4
+ Next instruction must be a branch
+ This must be on identity-mapped page
+ */
+ /*
+ * At this point we're in long mode but in 32bit compatibility mode
+ * with EFER.LME = 1, CS.L = 0, CS.D = 1 (and in turn
+ * EFER.LMA = 1). Now we want to jump in 64bit mode, to do that we load
+ * the new gdt/idt that has __KERNEL_CS with CS.L = 1.
+ */
+
+ /* Finally jump in 64bit mode */
+ ljmp *(wakeup_long64_vector - wakeup_code)(%esi)
+
+ .balign 4
+wakeup_long64_vector:
+ .long wakeup_long64 - wakeup_code
+ .word __KERNEL_CS, 0
+
+.code64
+
+ /* Hooray, we are in Long 64-bit mode (but still running in
+ * low memory)
+ */
+wakeup_long64:
+ /*
+ * We must switch to a new descriptor in kernel space for the GDT
+ * because soon the kernel won't have access anymore to the userspace
+ * addresses where we're currently running on. We have to do that here
+ * because in 32bit we couldn't load a 64bit linear address.
+ */
+ 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
+ movw %ax, %ss
+ movw %ax, %ds
+ movw %ax, %es
+ movw %ax, %fs
+ 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
+
+.code32
+
+ .align 64
+gdta:
+ /* Its good to keep gdt in sync with one in trampoline.S */
+ .word 0, 0, 0, 0 # dummy
+ /* ??? Why I need the accessed bit set in order for this to work? */
+ .quad 0x00cf9b000000ffff # __KERNEL32_CS
+ .quad 0x00af9b000000ffff # __KERNEL_CS
+ .quad 0x00cf93000000ffff # __KERNEL_DS
+
+idt_48a:
+ .word 0 # idt limit = 0
+ .word 0, 0 # idt base = 0L
+
+gdt_48a:
+ .word 0x800 # gdt limit=2048,
+ # 256 GDT entries
+ .long gdta - wakeup_code # gdt base (relocated in later)
+
+real_magic: .quad 0
+video_mode: .quad 0
+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)
+ * EXTENDED_VGA (-2)
+ * ASK_VGA (-3)
+ * Video modes numbered by menu position -- NOT RECOMMENDED because of lack
+ * of compatibility when extending the table. These are between 0x00 and 0xff.
+ */
+#define VIDEO_FIRST_MENU 0x0000
+
+/* Standard BIOS video modes (BIOS number + 0x0100) */
+#define VIDEO_FIRST_BIOS 0x0100
+
+/* VESA BIOS video modes (VESA number + 0x0200) */
+#define VIDEO_FIRST_VESA 0x0200
+
+/* Video7 special modes (BIOS number + 0x0900) */
+#define VIDEO_FIRST_V7 0x0900
+
+# Setting of user mode (AX=mode ID) => CF=success
+
+# For now, we only handle VESA modes (0x0200..0x03ff). To handle other
+# modes, we should probably compile in the video code from the boot
+# directory.
+.code16
+mode_set:
+ movw %ax, %bx
+ subb $VIDEO_FIRST_VESA>>8, %bh
+ cmpb $2, %bh
+ jb check_vesa
+
+setbad:
+ clc
+ ret
+
+check_vesa:
+ orw $0x4000, %bx # Use linear frame buffer
+ movw $0x4f02, %ax # VESA BIOS mode set call
+ int $0x10
+ cmpw $0x004f, %ax # AL=4f if implemented
+ jnz setbad # AH=0 if OK
+
+ stc
+ ret
+
+wakeup_stack_begin: # Stack grows down
+
+.org 0xff0
+wakeup_stack: # Just below end of page
+
+.org 0x1000
+ENTRY(wakeup_level4_pgt)
+ .quad level3_ident_pgt - __START_KERNEL_map + _KERNPG_TABLE
+ .fill 510,8,0
+ /* (2^48-(2*1024*1024*1024))/(2^39) = 511 */
+ .quad level3_kernel_pgt - __START_KERNEL_map + _KERNPG_TABLE
+
+ENTRY(wakeup_end)
+
+##
+# acpi_copy_wakeup_routine
+#
+# Copy the above routine to low memory.
+#
+# Parameters:
+# %rdi: place to copy wakeup routine to
+#
+# Returned address is location of code in low memory (past data and stack)
+#
+ .code64
+ENTRY(acpi_copy_wakeup_routine)
+ pushq %rax
+ pushq %rdx
+
+ movl saved_video_mode, %edx
+ movl %edx, video_mode - wakeup_start (,%rdi)
+ movl acpi_realmode_flags, %edx
+ movl %edx, realmode_flags - wakeup_start (,%rdi)
+ movq $0x12345678, real_magic - wakeup_start (,%rdi)
+ movq $0x123456789abcdef0, %rdx
+ movq %rdx, saved_magic
+
+ movq saved_magic, %rax
+ movq $0x123456789abcdef0, %rdx
+ cmpq %rdx, %rax
+ jne bogus_64_magic
+
+ # restore the regs we used
+ popq %rdx
+ popq %rax
+ENTRY(do_suspend_lowlevel_s4bios)
+ ret
+
+ .align 2
+ .p2align 4,,15
+.globl do_suspend_lowlevel
+ .type do_suspend_lowlevel,@function
+do_suspend_lowlevel:
+.LFB5:
+ subq $8, %rsp
+ xorl %eax, %eax
+ call save_processor_state
+
+ movq %rsp, saved_context_esp(%rip)
+ movq %rax, saved_context_eax(%rip)
+ movq %rbx, saved_context_ebx(%rip)
+ movq %rcx, saved_context_ecx(%rip)
+ movq %rdx, saved_context_edx(%rip)
+ movq %rbp, saved_context_ebp(%rip)
+ movq %rsi, saved_context_esi(%rip)
+ movq %rdi, saved_context_edi(%rip)
+ movq %r8, saved_context_r08(%rip)
+ movq %r9, saved_context_r09(%rip)
+ movq %r10, saved_context_r10(%rip)
+ movq %r11, saved_context_r11(%rip)
+ movq %r12, saved_context_r12(%rip)
+ movq %r13, saved_context_r13(%rip)
+ movq %r14, saved_context_r14(%rip)
+ movq %r15, saved_context_r15(%rip)
+ pushfq ; popq saved_context_eflags(%rip)
+
+ movq $.L97, saved_rip(%rip)
+
+ movq %rsp,saved_rsp
+ movq %rbp,saved_rbp
+ movq %rbx,saved_rbx
+ movq %rdi,saved_rdi
+ movq %rsi,saved_rsi
+
+ addq $8, %rsp
+ movl $3, %edi
+ xorl %eax, %eax
+ jmp acpi_enter_sleep_state
+.L97:
+ .p2align 4,,7
+.L99:
+ .align 4
+ movl $24, %eax
+ movw %ax, %ds
+ movq saved_context+58(%rip), %rax
+ movq %rax, %cr4
+ movq saved_context+50(%rip), %rax
+ movq %rax, %cr3
+ movq saved_context+42(%rip), %rax
+ movq %rax, %cr2
+ movq saved_context+34(%rip), %rax
+ movq %rax, %cr0
+ pushq saved_context_eflags(%rip) ; popfq
+ movq saved_context_esp(%rip), %rsp
+ movq saved_context_ebp(%rip), %rbp
+ movq saved_context_eax(%rip), %rax
+ movq saved_context_ebx(%rip), %rbx
+ movq saved_context_ecx(%rip), %rcx
+ movq saved_context_edx(%rip), %rdx
+ movq saved_context_esi(%rip), %rsi
+ movq saved_context_edi(%rip), %rdi
+ movq saved_context_r08(%rip), %r8
+ movq saved_context_r09(%rip), %r9
+ movq saved_context_r10(%rip), %r10
+ movq saved_context_r11(%rip), %r11
+ movq saved_context_r12(%rip), %r12
+ movq saved_context_r13(%rip), %r13
+ movq saved_context_r14(%rip), %r14
+ movq saved_context_r15(%rip), %r15
+
+ xorl %eax, %eax
+ addq $8, %rsp
+ jmp restore_processor_state
+.LFE5:
+.Lfe5:
+ .size do_suspend_lowlevel,.Lfe5-do_suspend_lowlevel
+
+.data
+ALIGN
+ENTRY(saved_rbp) .quad 0
+ENTRY(saved_rsi) .quad 0
+ENTRY(saved_rdi) .quad 0
+ENTRY(saved_rbx) .quad 0
+
+ENTRY(saved_rip) .quad 0
+ENTRY(saved_rsp) .quad 0
+
+ENTRY(saved_magic) .quad 0
projects / openwrt / staging / blogic.git / commitdiff