x86_64: prepare shared kernel/acpi/wakeup.S

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 0 insertions, 456 deletions

diff --git a/arch/x86_64/kernel/acpi/wakeup.S b/arch/x86_64/kernel/acpi/wakeup.S
deleted file mode 100644
index 8b4357e1efe..00000000000
--- a/arch/x86_64/kernel/acpi/wakeup.S
+++ /dev/null
@@ -1,456 +0,0 @@
-.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