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authorThomas Gleixner <tglx@linutronix.de>2007-10-11 05:17:05 -0400
committerThomas Gleixner <tglx@linutronix.de>2007-10-11 05:17:05 -0400
commite8d08eb1b59bf6dda44fffe63cce1250d87a8b56 (patch)
treef73f6b2b8ee0d2c6b06427fdd55f9d29212ca6bc /arch/x86_64
parent987c75d7170686804b404b7f917b9e4b703702ff (diff)
x86_64: move kernel/acpi
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86_64')
-rw-r--r--arch/x86_64/kernel/Makefile_642
-rw-r--r--arch/x86_64/kernel/acpi/Makefile5
-rw-r--r--arch/x86_64/kernel/acpi/Makefile_649
-rw-r--r--arch/x86_64/kernel/acpi/sleep_64.c120
-rw-r--r--arch/x86_64/kernel/acpi/wakeup_64.S456
5 files changed, 1 insertions, 591 deletions
diff --git a/arch/x86_64/kernel/Makefile_64 b/arch/x86_64/kernel/Makefile_64
index 3a204cc599d7..120d4e51fd4d 100644
--- a/arch/x86_64/kernel/Makefile_64
+++ b/arch/x86_64/kernel/Makefile_64
@@ -16,7 +16,7 @@ obj-$(CONFIG_X86_MCE) += mce_64.o therm_throt.o
16obj-$(CONFIG_X86_MCE_INTEL) += mce_intel_64.o 16obj-$(CONFIG_X86_MCE_INTEL) += mce_intel_64.o
17obj-$(CONFIG_X86_MCE_AMD) += mce_amd_64.o 17obj-$(CONFIG_X86_MCE_AMD) += mce_amd_64.o
18obj-$(CONFIG_MTRR) += ../../x86/kernel/cpu/mtrr/ 18obj-$(CONFIG_MTRR) += ../../x86/kernel/cpu/mtrr/
19obj-$(CONFIG_ACPI) += acpi/ 19obj-$(CONFIG_ACPI) += ../../x86/kernel/acpi/
20obj-$(CONFIG_X86_MSR) += msr.o 20obj-$(CONFIG_X86_MSR) += msr.o
21obj-$(CONFIG_MICROCODE) += microcode.o 21obj-$(CONFIG_MICROCODE) += microcode.o
22obj-$(CONFIG_X86_CPUID) += cpuid.o 22obj-$(CONFIG_X86_CPUID) += cpuid.o
diff --git a/arch/x86_64/kernel/acpi/Makefile b/arch/x86_64/kernel/acpi/Makefile
deleted file mode 100644
index dd4eb7cef2b4..000000000000
--- a/arch/x86_64/kernel/acpi/Makefile
+++ /dev/null
@@ -1,5 +0,0 @@
1ifeq ($(CONFIG_X86_32),y)
2include ${srctree}/arch/x86/kernel/acpi/Makefile_32
3else
4include ${srctree}/arch/x86_64/kernel/acpi/Makefile_64
5endif
diff --git a/arch/x86_64/kernel/acpi/Makefile_64 b/arch/x86_64/kernel/acpi/Makefile_64
deleted file mode 100644
index fc377c87e0b0..000000000000
--- a/arch/x86_64/kernel/acpi/Makefile_64
+++ /dev/null
@@ -1,9 +0,0 @@
1obj-y := boot.o
2boot-y := ../../../x86/kernel/acpi/boot.o
3obj-$(CONFIG_ACPI_SLEEP) += sleep_64.o wakeup_64.o
4
5ifneq ($(CONFIG_ACPI_PROCESSOR),)
6obj-y += processor.o
7processor-y := ../../../x86/kernel/acpi/processor.o ../../../x86/kernel/acpi/cstate.o
8endif
9
diff --git a/arch/x86_64/kernel/acpi/sleep_64.c b/arch/x86_64/kernel/acpi/sleep_64.c
deleted file mode 100644
index 79475d237071..000000000000
--- a/arch/x86_64/kernel/acpi/sleep_64.c
+++ /dev/null
@@ -1,120 +0,0 @@
1/*
2 * acpi.c - Architecture-Specific Low-Level ACPI Support
3 *
4 * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
5 * Copyright (C) 2001 Jun Nakajima <jun.nakajima@intel.com>
6 * Copyright (C) 2001 Patrick Mochel <mochel@osdl.org>
7 * Copyright (C) 2002 Andi Kleen, SuSE Labs (x86-64 port)
8 * Copyright (C) 2003 Pavel Machek, SuSE Labs
9 *
10 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
16 *
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 *
26 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
27 */
28
29#include <linux/kernel.h>
30#include <linux/init.h>
31#include <linux/types.h>
32#include <linux/stddef.h>
33#include <linux/slab.h>
34#include <linux/pci.h>
35#include <linux/bootmem.h>
36#include <linux/acpi.h>
37#include <linux/cpumask.h>
38
39#include <asm/mpspec.h>
40#include <asm/io.h>
41#include <asm/apic.h>
42#include <asm/apicdef.h>
43#include <asm/page.h>
44#include <asm/pgtable.h>
45#include <asm/pgalloc.h>
46#include <asm/io_apic.h>
47#include <asm/proto.h>
48#include <asm/tlbflush.h>
49
50/* --------------------------------------------------------------------------
51 Low-Level Sleep Support
52 -------------------------------------------------------------------------- */
53
54/* address in low memory of the wakeup routine. */
55unsigned long acpi_wakeup_address = 0;
56unsigned long acpi_realmode_flags;
57extern char wakeup_start, wakeup_end;
58
59extern unsigned long acpi_copy_wakeup_routine(unsigned long);
60
61/**
62 * acpi_save_state_mem - save kernel state
63 *
64 * Create an identity mapped page table and copy the wakeup routine to
65 * low memory.
66 */
67int acpi_save_state_mem(void)
68{
69 memcpy((void *)acpi_wakeup_address, &wakeup_start,
70 &wakeup_end - &wakeup_start);
71 acpi_copy_wakeup_routine(acpi_wakeup_address);
72
73 return 0;
74}
75
76/*
77 * acpi_restore_state
78 */
79void acpi_restore_state_mem(void)
80{
81}
82
83/**
84 * acpi_reserve_bootmem - do _very_ early ACPI initialisation
85 *
86 * We allocate a page in low memory for the wakeup
87 * routine for when we come back from a sleep state. The
88 * runtime allocator allows specification of <16M pages, but not
89 * <1M pages.
90 */
91void __init acpi_reserve_bootmem(void)
92{
93 acpi_wakeup_address = (unsigned long)alloc_bootmem_low(PAGE_SIZE*2);
94 if ((&wakeup_end - &wakeup_start) > (PAGE_SIZE*2))
95 printk(KERN_CRIT
96 "ACPI: Wakeup code way too big, will crash on attempt"
97 " to suspend\n");
98}
99
100static int __init acpi_sleep_setup(char *str)
101{
102 while ((str != NULL) && (*str != '\0')) {
103 if (strncmp(str, "s3_bios", 7) == 0)
104 acpi_realmode_flags |= 1;
105 if (strncmp(str, "s3_mode", 7) == 0)
106 acpi_realmode_flags |= 2;
107 if (strncmp(str, "s3_beep", 7) == 0)
108 acpi_realmode_flags |= 4;
109 str = strchr(str, ',');
110 if (str != NULL)
111 str += strspn(str, ", \t");
112 }
113 return 1;
114}
115
116__setup("acpi_sleep=", acpi_sleep_setup);
117
118void acpi_pci_link_exit(void)
119{
120}
diff --git a/arch/x86_64/kernel/acpi/wakeup_64.S b/arch/x86_64/kernel/acpi/wakeup_64.S
deleted file mode 100644
index 8b4357e1efe0..000000000000
--- a/arch/x86_64/kernel/acpi/wakeup_64.S
+++ /dev/null
@@ -1,456 +0,0 @@
1.text
2#include <linux/linkage.h>
3#include <asm/segment.h>
4#include <asm/pgtable.h>
5#include <asm/page.h>
6#include <asm/msr.h>
7
8# Copyright 2003 Pavel Machek <pavel@suse.cz>, distribute under GPLv2
9#
10# wakeup_code runs in real mode, and at unknown address (determined at run-time).
11# Therefore it must only use relative jumps/calls.
12#
13# Do we need to deal with A20? It is okay: ACPI specs says A20 must be enabled
14#
15# If physical address of wakeup_code is 0x12345, BIOS should call us with
16# cs = 0x1234, eip = 0x05
17#
18
19#define BEEP \
20 inb $97, %al; \
21 outb %al, $0x80; \
22 movb $3, %al; \
23 outb %al, $97; \
24 outb %al, $0x80; \
25 movb $-74, %al; \
26 outb %al, $67; \
27 outb %al, $0x80; \
28 movb $-119, %al; \
29 outb %al, $66; \
30 outb %al, $0x80; \
31 movb $15, %al; \
32 outb %al, $66;
33
34
35ALIGN
36 .align 16
37ENTRY(wakeup_start)
38wakeup_code:
39 wakeup_code_start = .
40 .code16
41
42# Running in *copy* of this code, somewhere in low 1MB.
43
44 movb $0xa1, %al ; outb %al, $0x80
45 cli
46 cld
47 # setup data segment
48 movw %cs, %ax
49 movw %ax, %ds # Make ds:0 point to wakeup_start
50 movw %ax, %ss
51
52 # Data segment must be set up before we can see whether to beep.
53 testl $4, realmode_flags - wakeup_code
54 jz 1f
55 BEEP
561:
57
58 # Private stack is needed for ASUS board
59 mov $(wakeup_stack - wakeup_code), %sp
60
61 pushl $0 # Kill any dangerous flags
62 popfl
63
64 movl real_magic - wakeup_code, %eax
65 cmpl $0x12345678, %eax
66 jne bogus_real_magic
67
68 call verify_cpu # Verify the cpu supports long
69 # mode
70 testl %eax, %eax
71 jnz no_longmode
72
73 testl $1, realmode_flags - wakeup_code
74 jz 1f
75 lcall $0xc000,$3
76 movw %cs, %ax
77 movw %ax, %ds # Bios might have played with that
78 movw %ax, %ss
791:
80
81 testl $2, realmode_flags - wakeup_code
82 jz 1f
83 mov video_mode - wakeup_code, %ax
84 call mode_set
851:
86
87 movw $0xb800, %ax
88 movw %ax,%fs
89 movw $0x0e00 + 'L', %fs:(0x10)
90
91 movb $0xa2, %al ; outb %al, $0x80
92
93 mov %ds, %ax # Find 32bit wakeup_code addr
94 movzx %ax, %esi # (Convert %ds:gdt to a liner ptr)
95 shll $4, %esi
96 # Fix up the vectors
97 addl %esi, wakeup_32_vector - wakeup_code
98 addl %esi, wakeup_long64_vector - wakeup_code
99 addl %esi, gdt_48a + 2 - wakeup_code # Fixup the gdt pointer
100
101 lidtl %ds:idt_48a - wakeup_code
102 lgdtl %ds:gdt_48a - wakeup_code # load gdt with whatever is
103 # appropriate
104
105 movl $1, %eax # protected mode (PE) bit
106 lmsw %ax # This is it!
107 jmp 1f
1081:
109
110 ljmpl *(wakeup_32_vector - wakeup_code)
111
112 .balign 4
113wakeup_32_vector:
114 .long wakeup_32 - wakeup_code
115 .word __KERNEL32_CS, 0
116
117 .code32
118wakeup_32:
119# Running in this code, but at low address; paging is not yet turned on.
120 movb $0xa5, %al ; outb %al, $0x80
121
122 movl $__KERNEL_DS, %eax
123 movl %eax, %ds
124
125 movw $0x0e00 + 'i', %ds:(0xb8012)
126 movb $0xa8, %al ; outb %al, $0x80;
127
128 /*
129 * Prepare for entering 64bits mode
130 */
131
132 /* Enable PAE */
133 xorl %eax, %eax
134 btsl $5, %eax
135 movl %eax, %cr4
136
137 /* Setup early boot stage 4 level pagetables */
138 leal (wakeup_level4_pgt - wakeup_code)(%esi), %eax
139 movl %eax, %cr3
140
141 /* Check if nx is implemented */
142 movl $0x80000001, %eax
143 cpuid
144 movl %edx,%edi
145
146 /* Enable Long Mode */
147 xorl %eax, %eax
148 btsl $_EFER_LME, %eax
149
150 /* No Execute supported? */
151 btl $20,%edi
152 jnc 1f
153 btsl $_EFER_NX, %eax
154
155 /* Make changes effective */
1561: movl $MSR_EFER, %ecx
157 xorl %edx, %edx
158 wrmsr
159
160 xorl %eax, %eax
161 btsl $31, %eax /* Enable paging and in turn activate Long Mode */
162 btsl $0, %eax /* Enable protected mode */
163
164 /* Make changes effective */
165 movl %eax, %cr0
166
167 /* At this point:
168 CR4.PAE must be 1
169 CS.L must be 0
170 CR3 must point to PML4
171 Next instruction must be a branch
172 This must be on identity-mapped page
173 */
174 /*
175 * At this point we're in long mode but in 32bit compatibility mode
176 * with EFER.LME = 1, CS.L = 0, CS.D = 1 (and in turn
177 * EFER.LMA = 1). Now we want to jump in 64bit mode, to do that we load
178 * the new gdt/idt that has __KERNEL_CS with CS.L = 1.
179 */
180
181 /* Finally jump in 64bit mode */
182 ljmp *(wakeup_long64_vector - wakeup_code)(%esi)
183
184 .balign 4
185wakeup_long64_vector:
186 .long wakeup_long64 - wakeup_code
187 .word __KERNEL_CS, 0
188
189.code64
190
191 /* Hooray, we are in Long 64-bit mode (but still running in
192 * low memory)
193 */
194wakeup_long64:
195 /*
196 * We must switch to a new descriptor in kernel space for the GDT
197 * because soon the kernel won't have access anymore to the userspace
198 * addresses where we're currently running on. We have to do that here
199 * because in 32bit we couldn't load a 64bit linear address.
200 */
201 lgdt cpu_gdt_descr
202
203 movw $0x0e00 + 'n', %ds:(0xb8014)
204 movb $0xa9, %al ; outb %al, $0x80
205
206 movq saved_magic, %rax
207 movq $0x123456789abcdef0, %rdx
208 cmpq %rdx, %rax
209 jne bogus_64_magic
210
211 movw $0x0e00 + 'u', %ds:(0xb8016)
212
213 nop
214 nop
215 movw $__KERNEL_DS, %ax
216 movw %ax, %ss
217 movw %ax, %ds
218 movw %ax, %es
219 movw %ax, %fs
220 movw %ax, %gs
221 movq saved_rsp, %rsp
222
223 movw $0x0e00 + 'x', %ds:(0xb8018)
224 movq saved_rbx, %rbx
225 movq saved_rdi, %rdi
226 movq saved_rsi, %rsi
227 movq saved_rbp, %rbp
228
229 movw $0x0e00 + '!', %ds:(0xb801a)
230 movq saved_rip, %rax
231 jmp *%rax
232
233.code32
234
235 .align 64
236gdta:
237 /* Its good to keep gdt in sync with one in trampoline.S */
238 .word 0, 0, 0, 0 # dummy
239 /* ??? Why I need the accessed bit set in order for this to work? */
240 .quad 0x00cf9b000000ffff # __KERNEL32_CS
241 .quad 0x00af9b000000ffff # __KERNEL_CS
242 .quad 0x00cf93000000ffff # __KERNEL_DS
243
244idt_48a:
245 .word 0 # idt limit = 0
246 .word 0, 0 # idt base = 0L
247
248gdt_48a:
249 .word 0x800 # gdt limit=2048,
250 # 256 GDT entries
251 .long gdta - wakeup_code # gdt base (relocated in later)
252
253real_magic: .quad 0
254video_mode: .quad 0
255realmode_flags: .quad 0
256
257.code16
258bogus_real_magic:
259 movb $0xba,%al ; outb %al,$0x80
260 jmp bogus_real_magic
261
262.code64
263bogus_64_magic:
264 movb $0xb3,%al ; outb %al,$0x80
265 jmp bogus_64_magic
266
267.code16
268no_longmode:
269 movb $0xbc,%al ; outb %al,$0x80
270 jmp no_longmode
271
272#include "../verify_cpu_64.S"
273
274/* This code uses an extended set of video mode numbers. These include:
275 * Aliases for standard modes
276 * NORMAL_VGA (-1)
277 * EXTENDED_VGA (-2)
278 * ASK_VGA (-3)
279 * Video modes numbered by menu position -- NOT RECOMMENDED because of lack
280 * of compatibility when extending the table. These are between 0x00 and 0xff.
281 */
282#define VIDEO_FIRST_MENU 0x0000
283
284/* Standard BIOS video modes (BIOS number + 0x0100) */
285#define VIDEO_FIRST_BIOS 0x0100
286
287/* VESA BIOS video modes (VESA number + 0x0200) */
288#define VIDEO_FIRST_VESA 0x0200
289
290/* Video7 special modes (BIOS number + 0x0900) */
291#define VIDEO_FIRST_V7 0x0900
292
293# Setting of user mode (AX=mode ID) => CF=success
294
295# For now, we only handle VESA modes (0x0200..0x03ff). To handle other
296# modes, we should probably compile in the video code from the boot
297# directory.
298.code16
299mode_set:
300 movw %ax, %bx
301 subb $VIDEO_FIRST_VESA>>8, %bh
302 cmpb $2, %bh
303 jb check_vesa
304
305setbad:
306 clc
307 ret
308
309check_vesa:
310 orw $0x4000, %bx # Use linear frame buffer
311 movw $0x4f02, %ax # VESA BIOS mode set call
312 int $0x10
313 cmpw $0x004f, %ax # AL=4f if implemented
314 jnz setbad # AH=0 if OK
315
316 stc
317 ret
318
319wakeup_stack_begin: # Stack grows down
320
321.org 0xff0
322wakeup_stack: # Just below end of page
323
324.org 0x1000
325ENTRY(wakeup_level4_pgt)
326 .quad level3_ident_pgt - __START_KERNEL_map + _KERNPG_TABLE
327 .fill 510,8,0
328 /* (2^48-(2*1024*1024*1024))/(2^39) = 511 */
329 .quad level3_kernel_pgt - __START_KERNEL_map + _KERNPG_TABLE
330
331ENTRY(wakeup_end)
332
333##
334# acpi_copy_wakeup_routine
335#
336# Copy the above routine to low memory.
337#
338# Parameters:
339# %rdi: place to copy wakeup routine to
340#
341# Returned address is location of code in low memory (past data and stack)
342#
343 .code64
344ENTRY(acpi_copy_wakeup_routine)
345 pushq %rax
346 pushq %rdx
347
348 movl saved_video_mode, %edx
349 movl %edx, video_mode - wakeup_start (,%rdi)
350 movl acpi_realmode_flags, %edx
351 movl %edx, realmode_flags - wakeup_start (,%rdi)
352 movq $0x12345678, real_magic - wakeup_start (,%rdi)
353 movq $0x123456789abcdef0, %rdx
354 movq %rdx, saved_magic
355
356 movq saved_magic, %rax
357 movq $0x123456789abcdef0, %rdx
358 cmpq %rdx, %rax
359 jne bogus_64_magic
360
361 # restore the regs we used
362 popq %rdx
363 popq %rax
364ENTRY(do_suspend_lowlevel_s4bios)
365 ret
366
367 .align 2
368 .p2align 4,,15
369.globl do_suspend_lowlevel
370 .type do_suspend_lowlevel,@function
371do_suspend_lowlevel:
372.LFB5:
373 subq $8, %rsp
374 xorl %eax, %eax
375 call save_processor_state
376
377 movq %rsp, saved_context_esp(%rip)
378 movq %rax, saved_context_eax(%rip)
379 movq %rbx, saved_context_ebx(%rip)
380 movq %rcx, saved_context_ecx(%rip)
381 movq %rdx, saved_context_edx(%rip)
382 movq %rbp, saved_context_ebp(%rip)
383 movq %rsi, saved_context_esi(%rip)
384 movq %rdi, saved_context_edi(%rip)
385 movq %r8, saved_context_r08(%rip)
386 movq %r9, saved_context_r09(%rip)
387 movq %r10, saved_context_r10(%rip)
388 movq %r11, saved_context_r11(%rip)
389 movq %r12, saved_context_r12(%rip)
390 movq %r13, saved_context_r13(%rip)
391 movq %r14, saved_context_r14(%rip)
392 movq %r15, saved_context_r15(%rip)
393 pushfq ; popq saved_context_eflags(%rip)
394
395 movq $.L97, saved_rip(%rip)
396
397 movq %rsp,saved_rsp
398 movq %rbp,saved_rbp
399 movq %rbx,saved_rbx
400 movq %rdi,saved_rdi
401 movq %rsi,saved_rsi
402
403 addq $8, %rsp
404 movl $3, %edi
405 xorl %eax, %eax
406 jmp acpi_enter_sleep_state
407.L97:
408 .p2align 4,,7
409.L99:
410 .align 4
411 movl $24, %eax
412 movw %ax, %ds
413 movq saved_context+58(%rip), %rax
414 movq %rax, %cr4
415 movq saved_context+50(%rip), %rax
416 movq %rax, %cr3
417 movq saved_context+42(%rip), %rax
418 movq %rax, %cr2
419 movq saved_context+34(%rip), %rax
420 movq %rax, %cr0
421 pushq saved_context_eflags(%rip) ; popfq
422 movq saved_context_esp(%rip), %rsp
423 movq saved_context_ebp(%rip), %rbp
424 movq saved_context_eax(%rip), %rax
425 movq saved_context_ebx(%rip), %rbx
426 movq saved_context_ecx(%rip), %rcx
427 movq saved_context_edx(%rip), %rdx
428 movq saved_context_esi(%rip), %rsi
429 movq saved_context_edi(%rip), %rdi
430 movq saved_context_r08(%rip), %r8
431 movq saved_context_r09(%rip), %r9
432 movq saved_context_r10(%rip), %r10
433 movq saved_context_r11(%rip), %r11
434 movq saved_context_r12(%rip), %r12
435 movq saved_context_r13(%rip), %r13
436 movq saved_context_r14(%rip), %r14
437 movq saved_context_r15(%rip), %r15
438
439 xorl %eax, %eax
440 addq $8, %rsp
441 jmp restore_processor_state
442.LFE5:
443.Lfe5:
444 .size do_suspend_lowlevel,.Lfe5-do_suspend_lowlevel
445
446.data
447ALIGN
448ENTRY(saved_rbp) .quad 0
449ENTRY(saved_rsi) .quad 0
450ENTRY(saved_rdi) .quad 0
451ENTRY(saved_rbx) .quad 0
452
453ENTRY(saved_rip) .quad 0
454ENTRY(saved_rsp) .quad 0
455
456ENTRY(saved_magic) .quad 0
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