Commit | Line | Data |
---|---|---|
1da177e4 | 1 | #include <linux/module.h> |
cd6ed525 | 2 | #include <linux/reboot.h> |
4d022e35 MB |
3 | #include <linux/init.h> |
4 | #include <linux/pm.h> | |
5 | #include <linux/efi.h> | |
6 | #include <acpi/reboot.h> | |
7 | #include <asm/io.h> | |
1da177e4 | 8 | #include <asm/apic.h> |
4d37e7e3 | 9 | #include <asm/desc.h> |
4d022e35 | 10 | #include <asm/hpet.h> |
68db065c | 11 | #include <asm/pgtable.h> |
4412620f | 12 | #include <asm/proto.h> |
973efae2 | 13 | #include <asm/reboot_fixups.h> |
07f3331c | 14 | #include <asm/reboot.h> |
1da177e4 | 15 | |
4d022e35 MB |
16 | #ifdef CONFIG_X86_32 |
17 | # include <linux/dmi.h> | |
18 | # include <linux/ctype.h> | |
19 | # include <linux/mc146818rtc.h> | |
4d022e35 MB |
20 | #else |
21 | # include <asm/iommu.h> | |
22 | #endif | |
23 | ||
1da177e4 LT |
24 | /* |
25 | * Power off function, if any | |
26 | */ | |
27 | void (*pm_power_off)(void); | |
129f6946 | 28 | EXPORT_SYMBOL(pm_power_off); |
1da177e4 | 29 | |
ebdd561a | 30 | static const struct desc_ptr no_idt = {}; |
1da177e4 | 31 | static int reboot_mode; |
4d022e35 MB |
32 | enum reboot_type reboot_type = BOOT_KBD; |
33 | int reboot_force; | |
1da177e4 | 34 | |
4d022e35 | 35 | #if defined(CONFIG_X86_32) && defined(CONFIG_SMP) |
1da177e4 | 36 | static int reboot_cpu = -1; |
1da177e4 | 37 | #endif |
4d022e35 MB |
38 | |
39 | /* reboot=b[ios] | s[mp] | t[riple] | k[bd] | e[fi] [, [w]arm | [c]old] | |
40 | warm Don't set the cold reboot flag | |
41 | cold Set the cold reboot flag | |
42 | bios Reboot by jumping through the BIOS (only for X86_32) | |
43 | smp Reboot by executing reset on BSP or other CPU (only for X86_32) | |
44 | triple Force a triple fault (init) | |
45 | kbd Use the keyboard controller. cold reset (default) | |
46 | acpi Use the RESET_REG in the FADT | |
47 | efi Use efi reset_system runtime service | |
48 | force Avoid anything that could hang. | |
49 | */ | |
1da177e4 LT |
50 | static int __init reboot_setup(char *str) |
51 | { | |
4d022e35 | 52 | for (;;) { |
1da177e4 | 53 | switch (*str) { |
4d022e35 | 54 | case 'w': |
1da177e4 LT |
55 | reboot_mode = 0x1234; |
56 | break; | |
4d022e35 MB |
57 | |
58 | case 'c': | |
59 | reboot_mode = 0; | |
1da177e4 | 60 | break; |
4d022e35 MB |
61 | |
62 | #ifdef CONFIG_X86_32 | |
1da177e4 | 63 | #ifdef CONFIG_SMP |
4d022e35 | 64 | case 's': |
6f673d83 | 65 | if (isdigit(*(str+1))) { |
1da177e4 | 66 | reboot_cpu = (int) (*(str+1) - '0'); |
6f673d83 | 67 | if (isdigit(*(str+2))) |
1da177e4 LT |
68 | reboot_cpu = reboot_cpu*10 + (int)(*(str+2) - '0'); |
69 | } | |
4d022e35 MB |
70 | /* we will leave sorting out the final value |
71 | when we are ready to reboot, since we might not | |
72 | have set up boot_cpu_id or smp_num_cpu */ | |
1da177e4 | 73 | break; |
4d022e35 MB |
74 | #endif /* CONFIG_SMP */ |
75 | ||
76 | case 'b': | |
1da177e4 | 77 | #endif |
4d022e35 MB |
78 | case 'a': |
79 | case 'k': | |
80 | case 't': | |
81 | case 'e': | |
82 | reboot_type = *str; | |
83 | break; | |
84 | ||
85 | case 'f': | |
86 | reboot_force = 1; | |
87 | break; | |
1da177e4 | 88 | } |
4d022e35 MB |
89 | |
90 | str = strchr(str, ','); | |
91 | if (str) | |
1da177e4 LT |
92 | str++; |
93 | else | |
94 | break; | |
95 | } | |
96 | return 1; | |
97 | } | |
98 | ||
99 | __setup("reboot=", reboot_setup); | |
100 | ||
4d022e35 MB |
101 | |
102 | #ifdef CONFIG_X86_32 | |
1da177e4 LT |
103 | /* |
104 | * Reboot options and system auto-detection code provided by | |
105 | * Dell Inc. so their systems "just work". :-) | |
106 | */ | |
107 | ||
108 | /* | |
4d022e35 MB |
109 | * Some machines require the "reboot=b" commandline option, |
110 | * this quirk makes that automatic. | |
1da177e4 | 111 | */ |
1855256c | 112 | static int __init set_bios_reboot(const struct dmi_system_id *d) |
1da177e4 | 113 | { |
4d022e35 MB |
114 | if (reboot_type != BOOT_BIOS) { |
115 | reboot_type = BOOT_BIOS; | |
1da177e4 LT |
116 | printk(KERN_INFO "%s series board detected. Selecting BIOS-method for reboots.\n", d->ident); |
117 | } | |
118 | return 0; | |
119 | } | |
120 | ||
1da177e4 | 121 | static struct dmi_system_id __initdata reboot_dmi_table[] = { |
b9e82af8 TG |
122 | { /* Handle problems with rebooting on Dell E520's */ |
123 | .callback = set_bios_reboot, | |
124 | .ident = "Dell E520", | |
125 | .matches = { | |
126 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
127 | DMI_MATCH(DMI_PRODUCT_NAME, "Dell DM061"), | |
128 | }, | |
129 | }, | |
1da177e4 | 130 | { /* Handle problems with rebooting on Dell 1300's */ |
dd2a1305 | 131 | .callback = set_bios_reboot, |
1da177e4 LT |
132 | .ident = "Dell PowerEdge 1300", |
133 | .matches = { | |
134 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Computer Corporation"), | |
135 | DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge 1300/"), | |
136 | }, | |
137 | }, | |
138 | { /* Handle problems with rebooting on Dell 300's */ | |
139 | .callback = set_bios_reboot, | |
140 | .ident = "Dell PowerEdge 300", | |
141 | .matches = { | |
142 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Computer Corporation"), | |
143 | DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge 300/"), | |
144 | }, | |
145 | }, | |
df2edcf3 JJ |
146 | { /* Handle problems with rebooting on Dell Optiplex 745's SFF*/ |
147 | .callback = set_bios_reboot, | |
148 | .ident = "Dell OptiPlex 745", | |
149 | .matches = { | |
150 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
151 | DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 745"), | |
df2edcf3 JJ |
152 | }, |
153 | }, | |
fc115bf1 CK |
154 | { /* Handle problems with rebooting on Dell Optiplex 745's DFF*/ |
155 | .callback = set_bios_reboot, | |
156 | .ident = "Dell OptiPlex 745", | |
157 | .matches = { | |
158 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
159 | DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 745"), | |
160 | DMI_MATCH(DMI_BOARD_NAME, "0MM599"), | |
161 | }, | |
162 | }, | |
fc1c8925 HAA |
163 | { /* Handle problems with rebooting on Dell Optiplex 745 with 0KW626 */ |
164 | .callback = set_bios_reboot, | |
165 | .ident = "Dell OptiPlex 745", | |
166 | .matches = { | |
167 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
168 | DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 745"), | |
169 | DMI_MATCH(DMI_BOARD_NAME, "0KW626"), | |
170 | }, | |
171 | }, | |
1da177e4 LT |
172 | { /* Handle problems with rebooting on Dell 2400's */ |
173 | .callback = set_bios_reboot, | |
174 | .ident = "Dell PowerEdge 2400", | |
175 | .matches = { | |
176 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Computer Corporation"), | |
177 | DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge 2400"), | |
178 | }, | |
179 | }, | |
766c3f94 | 180 | { /* Handle problems with rebooting on HP laptops */ |
d91b14c4 | 181 | .callback = set_bios_reboot, |
766c3f94 | 182 | .ident = "HP Compaq Laptop", |
d91b14c4 TV |
183 | .matches = { |
184 | DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), | |
766c3f94 | 185 | DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq"), |
d91b14c4 TV |
186 | }, |
187 | }, | |
1da177e4 LT |
188 | { } |
189 | }; | |
190 | ||
191 | static int __init reboot_init(void) | |
192 | { | |
193 | dmi_check_system(reboot_dmi_table); | |
194 | return 0; | |
195 | } | |
1da177e4 LT |
196 | core_initcall(reboot_init); |
197 | ||
198 | /* The following code and data reboots the machine by switching to real | |
199 | mode and jumping to the BIOS reset entry point, as if the CPU has | |
200 | really been reset. The previous version asked the keyboard | |
201 | controller to pulse the CPU reset line, which is more thorough, but | |
202 | doesn't work with at least one type of 486 motherboard. It is easy | |
203 | to stop this code working; hence the copious comments. */ | |
ebdd561a | 204 | static const unsigned long long |
1da177e4 LT |
205 | real_mode_gdt_entries [3] = |
206 | { | |
207 | 0x0000000000000000ULL, /* Null descriptor */ | |
ebdd561a JB |
208 | 0x00009b000000ffffULL, /* 16-bit real-mode 64k code at 0x00000000 */ |
209 | 0x000093000100ffffULL /* 16-bit real-mode 64k data at 0x00000100 */ | |
1da177e4 LT |
210 | }; |
211 | ||
ebdd561a | 212 | static const struct desc_ptr |
05f4a3ec | 213 | real_mode_gdt = { sizeof (real_mode_gdt_entries) - 1, (long)real_mode_gdt_entries }, |
4d022e35 | 214 | real_mode_idt = { 0x3ff, 0 }; |
1da177e4 LT |
215 | |
216 | /* This is 16-bit protected mode code to disable paging and the cache, | |
217 | switch to real mode and jump to the BIOS reset code. | |
218 | ||
219 | The instruction that switches to real mode by writing to CR0 must be | |
220 | followed immediately by a far jump instruction, which set CS to a | |
221 | valid value for real mode, and flushes the prefetch queue to avoid | |
222 | running instructions that have already been decoded in protected | |
223 | mode. | |
224 | ||
225 | Clears all the flags except ET, especially PG (paging), PE | |
226 | (protected-mode enable) and TS (task switch for coprocessor state | |
227 | save). Flushes the TLB after paging has been disabled. Sets CD and | |
228 | NW, to disable the cache on a 486, and invalidates the cache. This | |
229 | is more like the state of a 486 after reset. I don't know if | |
230 | something else should be done for other chips. | |
231 | ||
232 | More could be done here to set up the registers as if a CPU reset had | |
233 | occurred; hopefully real BIOSs don't assume much. */ | |
ebdd561a | 234 | static const unsigned char real_mode_switch [] = |
1da177e4 LT |
235 | { |
236 | 0x66, 0x0f, 0x20, 0xc0, /* movl %cr0,%eax */ | |
237 | 0x66, 0x83, 0xe0, 0x11, /* andl $0x00000011,%eax */ | |
238 | 0x66, 0x0d, 0x00, 0x00, 0x00, 0x60, /* orl $0x60000000,%eax */ | |
239 | 0x66, 0x0f, 0x22, 0xc0, /* movl %eax,%cr0 */ | |
240 | 0x66, 0x0f, 0x22, 0xd8, /* movl %eax,%cr3 */ | |
241 | 0x66, 0x0f, 0x20, 0xc3, /* movl %cr0,%ebx */ | |
242 | 0x66, 0x81, 0xe3, 0x00, 0x00, 0x00, 0x60, /* andl $0x60000000,%ebx */ | |
243 | 0x74, 0x02, /* jz f */ | |
244 | 0x0f, 0x09, /* wbinvd */ | |
245 | 0x24, 0x10, /* f: andb $0x10,al */ | |
246 | 0x66, 0x0f, 0x22, 0xc0 /* movl %eax,%cr0 */ | |
247 | }; | |
ebdd561a | 248 | static const unsigned char jump_to_bios [] = |
1da177e4 LT |
249 | { |
250 | 0xea, 0x00, 0x00, 0xff, 0xff /* ljmp $0xffff,$0x0000 */ | |
251 | }; | |
252 | ||
253 | /* | |
254 | * Switch to real mode and then execute the code | |
255 | * specified by the code and length parameters. | |
256 | * We assume that length will aways be less that 100! | |
257 | */ | |
ebdd561a | 258 | void machine_real_restart(const unsigned char *code, int length) |
1da177e4 | 259 | { |
1da177e4 LT |
260 | local_irq_disable(); |
261 | ||
262 | /* Write zero to CMOS register number 0x0f, which the BIOS POST | |
263 | routine will recognize as telling it to do a proper reboot. (Well | |
264 | that's what this book in front of me says -- it may only apply to | |
265 | the Phoenix BIOS though, it's not clear). At the same time, | |
266 | disable NMIs by setting the top bit in the CMOS address register, | |
267 | as we're about to do peculiar things to the CPU. I'm not sure if | |
268 | `outb_p' is needed instead of just `outb'. Use it to be on the | |
269 | safe side. (Yes, CMOS_WRITE does outb_p's. - Paul G.) | |
270 | */ | |
62dbc210 | 271 | spin_lock(&rtc_lock); |
1da177e4 | 272 | CMOS_WRITE(0x00, 0x8f); |
62dbc210 | 273 | spin_unlock(&rtc_lock); |
1da177e4 LT |
274 | |
275 | /* Remap the kernel at virtual address zero, as well as offset zero | |
276 | from the kernel segment. This assumes the kernel segment starts at | |
277 | virtual address PAGE_OFFSET. */ | |
68db065c | 278 | memcpy(swapper_pg_dir, swapper_pg_dir + KERNEL_PGD_BOUNDARY, |
4d022e35 | 279 | sizeof(swapper_pg_dir [0]) * KERNEL_PGD_PTRS); |
1da177e4 LT |
280 | |
281 | /* | |
282 | * Use `swapper_pg_dir' as our page directory. | |
283 | */ | |
284 | load_cr3(swapper_pg_dir); | |
285 | ||
286 | /* Write 0x1234 to absolute memory location 0x472. The BIOS reads | |
287 | this on booting to tell it to "Bypass memory test (also warm | |
288 | boot)". This seems like a fairly standard thing that gets set by | |
289 | REBOOT.COM programs, and the previous reset routine did this | |
290 | too. */ | |
1da177e4 LT |
291 | *((unsigned short *)0x472) = reboot_mode; |
292 | ||
293 | /* For the switch to real mode, copy some code to low memory. It has | |
294 | to be in the first 64k because it is running in 16-bit mode, and it | |
295 | has to have the same physical and virtual address, because it turns | |
296 | off paging. Copy it near the end of the first page, out of the way | |
297 | of BIOS variables. */ | |
4d022e35 | 298 | memcpy((void *)(0x1000 - sizeof(real_mode_switch) - 100), |
1da177e4 | 299 | real_mode_switch, sizeof (real_mode_switch)); |
4d022e35 | 300 | memcpy((void *)(0x1000 - 100), code, length); |
1da177e4 LT |
301 | |
302 | /* Set up the IDT for real mode. */ | |
4d37e7e3 | 303 | load_idt(&real_mode_idt); |
1da177e4 LT |
304 | |
305 | /* Set up a GDT from which we can load segment descriptors for real | |
306 | mode. The GDT is not used in real mode; it is just needed here to | |
307 | prepare the descriptors. */ | |
4d37e7e3 | 308 | load_gdt(&real_mode_gdt); |
1da177e4 LT |
309 | |
310 | /* Load the data segment registers, and thus the descriptors ready for | |
311 | real mode. The base address of each segment is 0x100, 16 times the | |
312 | selector value being loaded here. This is so that the segment | |
313 | registers don't have to be reloaded after switching to real mode: | |
314 | the values are consistent for real mode operation already. */ | |
1da177e4 LT |
315 | __asm__ __volatile__ ("movl $0x0010,%%eax\n" |
316 | "\tmovl %%eax,%%ds\n" | |
317 | "\tmovl %%eax,%%es\n" | |
318 | "\tmovl %%eax,%%fs\n" | |
319 | "\tmovl %%eax,%%gs\n" | |
320 | "\tmovl %%eax,%%ss" : : : "eax"); | |
321 | ||
322 | /* Jump to the 16-bit code that we copied earlier. It disables paging | |
323 | and the cache, switches to real mode, and jumps to the BIOS reset | |
324 | entry point. */ | |
1da177e4 LT |
325 | __asm__ __volatile__ ("ljmp $0x0008,%0" |
326 | : | |
4d022e35 | 327 | : "i" ((void *)(0x1000 - sizeof (real_mode_switch) - 100))); |
1da177e4 | 328 | } |
129f6946 AD |
329 | #ifdef CONFIG_APM_MODULE |
330 | EXPORT_SYMBOL(machine_real_restart); | |
331 | #endif | |
1da177e4 | 332 | |
4d022e35 MB |
333 | #endif /* CONFIG_X86_32 */ |
334 | ||
335 | static inline void kb_wait(void) | |
336 | { | |
337 | int i; | |
338 | ||
c84d6af8 AC |
339 | for (i = 0; i < 0x10000; i++) { |
340 | if ((inb(0x64) & 0x02) == 0) | |
4d022e35 | 341 | break; |
c84d6af8 AC |
342 | udelay(2); |
343 | } | |
4d022e35 MB |
344 | } |
345 | ||
7432d149 IM |
346 | void __attribute__((weak)) mach_reboot_fixups(void) |
347 | { | |
348 | } | |
349 | ||
416e2d63 | 350 | static void native_machine_emergency_restart(void) |
1da177e4 | 351 | { |
4d022e35 MB |
352 | int i; |
353 | ||
354 | /* Tell the BIOS if we want cold or warm reboot */ | |
355 | *((unsigned short *)__va(0x472)) = reboot_mode; | |
356 | ||
357 | for (;;) { | |
358 | /* Could also try the reset bit in the Hammer NB */ | |
359 | switch (reboot_type) { | |
360 | case BOOT_KBD: | |
7432d149 IM |
361 | mach_reboot_fixups(); /* for board specific fixups */ |
362 | ||
4d022e35 MB |
363 | for (i = 0; i < 10; i++) { |
364 | kb_wait(); | |
365 | udelay(50); | |
366 | outb(0xfe, 0x64); /* pulse reset low */ | |
367 | udelay(50); | |
368 | } | |
369 | ||
370 | case BOOT_TRIPLE: | |
ebdd561a | 371 | load_idt(&no_idt); |
4d022e35 MB |
372 | __asm__ __volatile__("int3"); |
373 | ||
374 | reboot_type = BOOT_KBD; | |
375 | break; | |
376 | ||
377 | #ifdef CONFIG_X86_32 | |
378 | case BOOT_BIOS: | |
379 | machine_real_restart(jump_to_bios, sizeof(jump_to_bios)); | |
380 | ||
381 | reboot_type = BOOT_KBD; | |
382 | break; | |
383 | #endif | |
384 | ||
385 | case BOOT_ACPI: | |
386 | acpi_reboot(); | |
387 | reboot_type = BOOT_KBD; | |
388 | break; | |
389 | ||
390 | ||
391 | case BOOT_EFI: | |
392 | if (efi_enabled) | |
393 | efi.reset_system(reboot_mode ? EFI_RESET_WARM : EFI_RESET_COLD, | |
394 | EFI_SUCCESS, 0, NULL); | |
395 | ||
396 | reboot_type = BOOT_KBD; | |
397 | break; | |
398 | } | |
399 | } | |
400 | } | |
401 | ||
3c62c625 | 402 | void native_machine_shutdown(void) |
4d022e35 MB |
403 | { |
404 | /* Stop the cpus and apics */ | |
1da177e4 | 405 | #ifdef CONFIG_SMP |
dd2a1305 EB |
406 | int reboot_cpu_id; |
407 | ||
408 | /* The boot cpu is always logical cpu 0 */ | |
409 | reboot_cpu_id = 0; | |
410 | ||
4d022e35 | 411 | #ifdef CONFIG_X86_32 |
dd2a1305 | 412 | /* See if there has been given a command line override */ |
d8e392e7 | 413 | if ((reboot_cpu != -1) && (reboot_cpu < NR_CPUS) && |
6107a7c4 | 414 | cpu_online(reboot_cpu)) |
dd2a1305 | 415 | reboot_cpu_id = reboot_cpu; |
4d022e35 | 416 | #endif |
1da177e4 | 417 | |
4d022e35 | 418 | /* Make certain the cpu I'm about to reboot on is online */ |
6107a7c4 | 419 | if (!cpu_online(reboot_cpu_id)) |
dd2a1305 | 420 | reboot_cpu_id = smp_processor_id(); |
dd2a1305 EB |
421 | |
422 | /* Make certain I only run on the appropriate processor */ | |
fc0e4748 | 423 | set_cpus_allowed_ptr(current, &cpumask_of_cpu(reboot_cpu_id)); |
dd2a1305 | 424 | |
4d022e35 MB |
425 | /* O.K Now that I'm on the appropriate processor, |
426 | * stop all of the others. | |
1da177e4 LT |
427 | */ |
428 | smp_send_stop(); | |
4d022e35 | 429 | #endif |
1da177e4 LT |
430 | |
431 | lapic_shutdown(); | |
432 | ||
433 | #ifdef CONFIG_X86_IO_APIC | |
434 | disable_IO_APIC(); | |
435 | #endif | |
4d022e35 | 436 | |
c86c7fbc OH |
437 | #ifdef CONFIG_HPET_TIMER |
438 | hpet_disable(); | |
439 | #endif | |
dd2a1305 | 440 | |
4d022e35 MB |
441 | #ifdef CONFIG_X86_64 |
442 | pci_iommu_shutdown(); | |
443 | #endif | |
973efae2 JF |
444 | } |
445 | ||
416e2d63 | 446 | static void native_machine_restart(char *__unused) |
dd2a1305 | 447 | { |
4d022e35 | 448 | printk("machine restart\n"); |
1da177e4 | 449 | |
4d022e35 MB |
450 | if (!reboot_force) |
451 | machine_shutdown(); | |
4a1421f8 EB |
452 | machine_emergency_restart(); |
453 | } | |
454 | ||
416e2d63 | 455 | static void native_machine_halt(void) |
1da177e4 LT |
456 | { |
457 | } | |
458 | ||
416e2d63 | 459 | static void native_machine_power_off(void) |
1da177e4 | 460 | { |
6e3fbee5 | 461 | if (pm_power_off) { |
4d022e35 MB |
462 | if (!reboot_force) |
463 | machine_shutdown(); | |
1da177e4 | 464 | pm_power_off(); |
6e3fbee5 | 465 | } |
1da177e4 LT |
466 | } |
467 | ||
07f3331c | 468 | struct machine_ops machine_ops = { |
416e2d63 JB |
469 | .power_off = native_machine_power_off, |
470 | .shutdown = native_machine_shutdown, | |
471 | .emergency_restart = native_machine_emergency_restart, | |
472 | .restart = native_machine_restart, | |
ed23dc6f GC |
473 | .halt = native_machine_halt, |
474 | #ifdef CONFIG_KEXEC | |
475 | .crash_shutdown = native_machine_crash_shutdown, | |
476 | #endif | |
07f3331c | 477 | }; |
416e2d63 JB |
478 | |
479 | void machine_power_off(void) | |
480 | { | |
481 | machine_ops.power_off(); | |
482 | } | |
483 | ||
484 | void machine_shutdown(void) | |
485 | { | |
486 | machine_ops.shutdown(); | |
487 | } | |
488 | ||
489 | void machine_emergency_restart(void) | |
490 | { | |
491 | machine_ops.emergency_restart(); | |
492 | } | |
493 | ||
494 | void machine_restart(char *cmd) | |
495 | { | |
496 | machine_ops.restart(cmd); | |
497 | } | |
498 | ||
499 | void machine_halt(void) | |
500 | { | |
501 | machine_ops.halt(); | |
502 | } | |
503 | ||
ed23dc6f GC |
504 | #ifdef CONFIG_KEXEC |
505 | void machine_crash_shutdown(struct pt_regs *regs) | |
506 | { | |
507 | machine_ops.crash_shutdown(regs); | |
508 | } | |
509 | #endif |