Commit | Line | Data |
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40ef8cbc PM |
1 | /* |
2 | * | |
3 | * Common boot and setup code. | |
4 | * | |
5 | * Copyright (C) 2001 PPC64 Team, IBM Corp | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or | |
8 | * modify it under the terms of the GNU General Public License | |
9 | * as published by the Free Software Foundation; either version | |
10 | * 2 of the License, or (at your option) any later version. | |
11 | */ | |
12 | ||
13 | #undef DEBUG | |
14 | ||
40ef8cbc PM |
15 | #include <linux/module.h> |
16 | #include <linux/string.h> | |
17 | #include <linux/sched.h> | |
18 | #include <linux/init.h> | |
19 | #include <linux/kernel.h> | |
20 | #include <linux/reboot.h> | |
21 | #include <linux/delay.h> | |
22 | #include <linux/initrd.h> | |
23 | #include <linux/ide.h> | |
24 | #include <linux/seq_file.h> | |
25 | #include <linux/ioport.h> | |
26 | #include <linux/console.h> | |
27 | #include <linux/utsname.h> | |
28 | #include <linux/tty.h> | |
29 | #include <linux/root_dev.h> | |
30 | #include <linux/notifier.h> | |
31 | #include <linux/cpu.h> | |
32 | #include <linux/unistd.h> | |
33 | #include <linux/serial.h> | |
34 | #include <linux/serial_8250.h> | |
7a0268fa | 35 | #include <linux/bootmem.h> |
40ef8cbc | 36 | #include <asm/io.h> |
0cc4746c | 37 | #include <asm/kdump.h> |
40ef8cbc PM |
38 | #include <asm/prom.h> |
39 | #include <asm/processor.h> | |
40 | #include <asm/pgtable.h> | |
40ef8cbc PM |
41 | #include <asm/smp.h> |
42 | #include <asm/elf.h> | |
43 | #include <asm/machdep.h> | |
44 | #include <asm/paca.h> | |
40ef8cbc PM |
45 | #include <asm/time.h> |
46 | #include <asm/cputable.h> | |
47 | #include <asm/sections.h> | |
48 | #include <asm/btext.h> | |
49 | #include <asm/nvram.h> | |
50 | #include <asm/setup.h> | |
51 | #include <asm/system.h> | |
52 | #include <asm/rtas.h> | |
53 | #include <asm/iommu.h> | |
54 | #include <asm/serial.h> | |
55 | #include <asm/cache.h> | |
56 | #include <asm/page.h> | |
57 | #include <asm/mmu.h> | |
58 | #include <asm/lmb.h> | |
40ef8cbc | 59 | #include <asm/firmware.h> |
f78541dc | 60 | #include <asm/xmon.h> |
dcad47fc | 61 | #include <asm/udbg.h> |
593e537b | 62 | #include <asm/kexec.h> |
40ef8cbc | 63 | |
66ba135c SR |
64 | #include "setup.h" |
65 | ||
40ef8cbc PM |
66 | #ifdef DEBUG |
67 | #define DBG(fmt...) udbg_printf(fmt) | |
68 | #else | |
69 | #define DBG(fmt...) | |
70 | #endif | |
71 | ||
40ef8cbc PM |
72 | int have_of = 1; |
73 | int boot_cpuid = 0; | |
40ef8cbc PM |
74 | dev_t boot_dev; |
75 | u64 ppc64_pft_size; | |
76 | ||
dabcafd3 OJ |
77 | /* Pick defaults since we might want to patch instructions |
78 | * before we've read this from the device tree. | |
79 | */ | |
80 | struct ppc64_caches ppc64_caches = { | |
5a2fe38d OJ |
81 | .dline_size = 0x40, |
82 | .log_dline_size = 6, | |
83 | .iline_size = 0x40, | |
84 | .log_iline_size = 6 | |
dabcafd3 | 85 | }; |
40ef8cbc PM |
86 | EXPORT_SYMBOL_GPL(ppc64_caches); |
87 | ||
88 | /* | |
89 | * These are used in binfmt_elf.c to put aux entries on the stack | |
90 | * for each elf executable being started. | |
91 | */ | |
92 | int dcache_bsize; | |
93 | int icache_bsize; | |
94 | int ucache_bsize; | |
95 | ||
40ef8cbc PM |
96 | #ifdef CONFIG_SMP |
97 | ||
98 | static int smt_enabled_cmdline; | |
99 | ||
100 | /* Look for ibm,smt-enabled OF option */ | |
101 | static void check_smt_enabled(void) | |
102 | { | |
103 | struct device_node *dn; | |
a7f67bdf | 104 | const char *smt_option; |
40ef8cbc PM |
105 | |
106 | /* Allow the command line to overrule the OF option */ | |
107 | if (smt_enabled_cmdline) | |
108 | return; | |
109 | ||
110 | dn = of_find_node_by_path("/options"); | |
111 | ||
112 | if (dn) { | |
a7f67bdf | 113 | smt_option = get_property(dn, "ibm,smt-enabled", NULL); |
40ef8cbc PM |
114 | |
115 | if (smt_option) { | |
116 | if (!strcmp(smt_option, "on")) | |
117 | smt_enabled_at_boot = 1; | |
118 | else if (!strcmp(smt_option, "off")) | |
119 | smt_enabled_at_boot = 0; | |
120 | } | |
121 | } | |
122 | } | |
123 | ||
124 | /* Look for smt-enabled= cmdline option */ | |
125 | static int __init early_smt_enabled(char *p) | |
126 | { | |
127 | smt_enabled_cmdline = 1; | |
128 | ||
129 | if (!p) | |
130 | return 0; | |
131 | ||
132 | if (!strcmp(p, "on") || !strcmp(p, "1")) | |
133 | smt_enabled_at_boot = 1; | |
134 | else if (!strcmp(p, "off") || !strcmp(p, "0")) | |
135 | smt_enabled_at_boot = 0; | |
136 | ||
137 | return 0; | |
138 | } | |
139 | early_param("smt-enabled", early_smt_enabled); | |
140 | ||
5ad57078 PM |
141 | #else |
142 | #define check_smt_enabled() | |
40ef8cbc PM |
143 | #endif /* CONFIG_SMP */ |
144 | ||
4ba99b97 ME |
145 | /* Put the paca pointer into r13 and SPRG3 */ |
146 | void __init setup_paca(int cpu) | |
147 | { | |
148 | local_paca = &paca[cpu]; | |
149 | mtspr(SPRN_SPRG3, local_paca); | |
150 | } | |
151 | ||
40ef8cbc PM |
152 | /* |
153 | * Early initialization entry point. This is called by head.S | |
154 | * with MMU translation disabled. We rely on the "feature" of | |
155 | * the CPU that ignores the top 2 bits of the address in real | |
156 | * mode so we can access kernel globals normally provided we | |
157 | * only toy with things in the RMO region. From here, we do | |
158 | * some early parsing of the device-tree to setup out LMB | |
159 | * data structures, and allocate & initialize the hash table | |
160 | * and segment tables so we can start running with translation | |
161 | * enabled. | |
162 | * | |
163 | * It is this function which will call the probe() callback of | |
164 | * the various platform types and copy the matching one to the | |
165 | * global ppc_md structure. Your platform can eventually do | |
166 | * some very early initializations from the probe() routine, but | |
167 | * this is not recommended, be very careful as, for example, the | |
168 | * device-tree is not accessible via normal means at this point. | |
169 | */ | |
170 | ||
171 | void __init early_setup(unsigned long dt_ptr) | |
172 | { | |
33dbcf72 ME |
173 | /* Assume we're on cpu 0 for now. Don't write to the paca yet! */ |
174 | setup_paca(0); | |
175 | ||
296167ae ME |
176 | /* Enable early debugging if any specified (see udbg.h) */ |
177 | udbg_early_init(); | |
40ef8cbc | 178 | |
e8222502 | 179 | DBG(" -> early_setup(), dt_ptr: 0x%lx\n", dt_ptr); |
40ef8cbc | 180 | |
40ef8cbc PM |
181 | /* |
182 | * Do early initializations using the flattened device | |
183 | * tree, like retreiving the physical memory map or | |
184 | * calculating/retreiving the hash table size | |
185 | */ | |
186 | early_init_devtree(__va(dt_ptr)); | |
187 | ||
4df20460 | 188 | /* Now we know the logical id of our boot cpu, setup the paca. */ |
4ba99b97 | 189 | setup_paca(boot_cpuid); |
4df20460 AB |
190 | |
191 | /* Fix up paca fields required for the boot cpu */ | |
192 | get_paca()->cpu_start = 1; | |
193 | get_paca()->stab_real = __pa((u64)&initial_stab); | |
194 | get_paca()->stab_addr = (u64)&initial_stab; | |
195 | ||
e8222502 BH |
196 | /* Probe the machine type */ |
197 | probe_machine(); | |
40ef8cbc | 198 | |
47310413 | 199 | setup_kdump_trampoline(); |
0cc4746c | 200 | |
40ef8cbc PM |
201 | DBG("Found, Initializing memory management...\n"); |
202 | ||
203 | /* | |
3c726f8d BH |
204 | * Initialize the MMU Hash table and create the linear mapping |
205 | * of memory. Has to be done before stab/slb initialization as | |
206 | * this is currently where the page size encoding is obtained | |
40ef8cbc | 207 | */ |
3c726f8d | 208 | htab_initialize(); |
40ef8cbc PM |
209 | |
210 | /* | |
3c726f8d | 211 | * Initialize stab / SLB management except on iSeries |
40ef8cbc | 212 | */ |
856d08ec SR |
213 | if (cpu_has_feature(CPU_FTR_SLB)) |
214 | slb_initialize(); | |
215 | else if (!firmware_has_feature(FW_FEATURE_ISERIES)) | |
216 | stab_initialize(get_paca()->stab_real); | |
40ef8cbc PM |
217 | |
218 | DBG(" <- early_setup()\n"); | |
219 | } | |
220 | ||
799d6046 PM |
221 | #ifdef CONFIG_SMP |
222 | void early_setup_secondary(void) | |
223 | { | |
224 | struct paca_struct *lpaca = get_paca(); | |
225 | ||
226 | /* Mark enabled in PACA */ | |
227 | lpaca->proc_enabled = 0; | |
228 | ||
229 | /* Initialize hash table for that CPU */ | |
230 | htab_initialize_secondary(); | |
231 | ||
232 | /* Initialize STAB/SLB. We use a virtual address as it works | |
233 | * in real mode on pSeries and we want a virutal address on | |
234 | * iSeries anyway | |
235 | */ | |
236 | if (cpu_has_feature(CPU_FTR_SLB)) | |
237 | slb_initialize(); | |
238 | else | |
239 | stab_initialize(lpaca->stab_addr); | |
240 | } | |
241 | ||
242 | #endif /* CONFIG_SMP */ | |
40ef8cbc | 243 | |
b8f51021 ME |
244 | #if defined(CONFIG_SMP) || defined(CONFIG_KEXEC) |
245 | void smp_release_cpus(void) | |
246 | { | |
247 | extern unsigned long __secondary_hold_spinloop; | |
758438a7 | 248 | unsigned long *ptr; |
b8f51021 ME |
249 | |
250 | DBG(" -> smp_release_cpus()\n"); | |
251 | ||
252 | /* All secondary cpus are spinning on a common spinloop, release them | |
253 | * all now so they can start to spin on their individual paca | |
254 | * spinloops. For non SMP kernels, the secondary cpus never get out | |
255 | * of the common spinloop. | |
256 | * This is useless but harmless on iSeries, secondaries are already | |
257 | * waiting on their paca spinloops. */ | |
258 | ||
758438a7 ME |
259 | ptr = (unsigned long *)((unsigned long)&__secondary_hold_spinloop |
260 | - PHYSICAL_START); | |
261 | *ptr = 1; | |
b8f51021 ME |
262 | mb(); |
263 | ||
264 | DBG(" <- smp_release_cpus()\n"); | |
265 | } | |
266 | #endif /* CONFIG_SMP || CONFIG_KEXEC */ | |
267 | ||
40ef8cbc | 268 | /* |
799d6046 PM |
269 | * Initialize some remaining members of the ppc64_caches and systemcfg |
270 | * structures | |
40ef8cbc PM |
271 | * (at least until we get rid of them completely). This is mostly some |
272 | * cache informations about the CPU that will be used by cache flush | |
273 | * routines and/or provided to userland | |
274 | */ | |
275 | static void __init initialize_cache_info(void) | |
276 | { | |
277 | struct device_node *np; | |
278 | unsigned long num_cpus = 0; | |
279 | ||
280 | DBG(" -> initialize_cache_info()\n"); | |
281 | ||
282 | for (np = NULL; (np = of_find_node_by_type(np, "cpu"));) { | |
283 | num_cpus += 1; | |
284 | ||
285 | /* We're assuming *all* of the CPUs have the same | |
286 | * d-cache and i-cache sizes... -Peter | |
287 | */ | |
288 | ||
289 | if ( num_cpus == 1 ) { | |
a7f67bdf | 290 | const u32 *sizep, *lsizep; |
40ef8cbc PM |
291 | u32 size, lsize; |
292 | const char *dc, *ic; | |
293 | ||
294 | /* Then read cache informations */ | |
e8222502 | 295 | if (machine_is(powermac)) { |
40ef8cbc PM |
296 | dc = "d-cache-block-size"; |
297 | ic = "i-cache-block-size"; | |
298 | } else { | |
299 | dc = "d-cache-line-size"; | |
300 | ic = "i-cache-line-size"; | |
301 | } | |
302 | ||
303 | size = 0; | |
304 | lsize = cur_cpu_spec->dcache_bsize; | |
a7f67bdf | 305 | sizep = get_property(np, "d-cache-size", NULL); |
40ef8cbc PM |
306 | if (sizep != NULL) |
307 | size = *sizep; | |
a7f67bdf | 308 | lsizep = get_property(np, dc, NULL); |
40ef8cbc PM |
309 | if (lsizep != NULL) |
310 | lsize = *lsizep; | |
311 | if (sizep == 0 || lsizep == 0) | |
312 | DBG("Argh, can't find dcache properties ! " | |
313 | "sizep: %p, lsizep: %p\n", sizep, lsizep); | |
314 | ||
a7f290da BH |
315 | ppc64_caches.dsize = size; |
316 | ppc64_caches.dline_size = lsize; | |
40ef8cbc PM |
317 | ppc64_caches.log_dline_size = __ilog2(lsize); |
318 | ppc64_caches.dlines_per_page = PAGE_SIZE / lsize; | |
319 | ||
320 | size = 0; | |
321 | lsize = cur_cpu_spec->icache_bsize; | |
a7f67bdf | 322 | sizep = get_property(np, "i-cache-size", NULL); |
40ef8cbc PM |
323 | if (sizep != NULL) |
324 | size = *sizep; | |
a7f67bdf | 325 | lsizep = get_property(np, ic, NULL); |
40ef8cbc PM |
326 | if (lsizep != NULL) |
327 | lsize = *lsizep; | |
328 | if (sizep == 0 || lsizep == 0) | |
329 | DBG("Argh, can't find icache properties ! " | |
330 | "sizep: %p, lsizep: %p\n", sizep, lsizep); | |
331 | ||
a7f290da BH |
332 | ppc64_caches.isize = size; |
333 | ppc64_caches.iline_size = lsize; | |
40ef8cbc PM |
334 | ppc64_caches.log_iline_size = __ilog2(lsize); |
335 | ppc64_caches.ilines_per_page = PAGE_SIZE / lsize; | |
336 | } | |
337 | } | |
338 | ||
40ef8cbc PM |
339 | DBG(" <- initialize_cache_info()\n"); |
340 | } | |
341 | ||
40ef8cbc PM |
342 | |
343 | /* | |
344 | * Do some initial setup of the system. The parameters are those which | |
345 | * were passed in from the bootloader. | |
346 | */ | |
347 | void __init setup_system(void) | |
348 | { | |
349 | DBG(" -> setup_system()\n"); | |
350 | ||
351 | /* | |
352 | * Unflatten the device-tree passed by prom_init or kexec | |
353 | */ | |
354 | unflatten_device_tree(); | |
355 | ||
356 | /* | |
357 | * Fill the ppc64_caches & systemcfg structures with informations | |
0ebfff14 | 358 | * retrieved from the device-tree. |
40ef8cbc PM |
359 | */ |
360 | initialize_cache_info(); | |
361 | ||
0ebfff14 BH |
362 | /* |
363 | * Initialize irq remapping subsystem | |
364 | */ | |
365 | irq_early_init(); | |
366 | ||
40ef8cbc PM |
367 | #ifdef CONFIG_PPC_RTAS |
368 | /* | |
369 | * Initialize RTAS if available | |
370 | */ | |
371 | rtas_initialize(); | |
372 | #endif /* CONFIG_PPC_RTAS */ | |
40ef8cbc PM |
373 | |
374 | /* | |
375 | * Check if we have an initrd provided via the device-tree | |
376 | */ | |
377 | check_for_initrd(); | |
40ef8cbc PM |
378 | |
379 | /* | |
380 | * Do some platform specific early initializations, that includes | |
381 | * setting up the hash table pointers. It also sets up some interrupt-mapping | |
382 | * related options that will be used by finish_device_tree() | |
383 | */ | |
384 | ppc_md.init_early(); | |
40ef8cbc | 385 | |
463ce0e1 BH |
386 | /* |
387 | * We can discover serial ports now since the above did setup the | |
388 | * hash table management for us, thus ioremap works. We do that early | |
389 | * so that further code can be debugged | |
390 | */ | |
463ce0e1 | 391 | find_legacy_serial_ports(); |
463ce0e1 | 392 | |
40ef8cbc PM |
393 | /* |
394 | * Register early console | |
395 | */ | |
396 | register_early_udbg_console(); | |
40ef8cbc | 397 | |
47679283 ME |
398 | /* |
399 | * Initialize xmon | |
400 | */ | |
401 | xmon_setup(); | |
480f6f35 | 402 | |
5ad57078 PM |
403 | check_smt_enabled(); |
404 | smp_setup_cpu_maps(); | |
40ef8cbc | 405 | |
f018b36f | 406 | #ifdef CONFIG_SMP |
40ef8cbc PM |
407 | /* Release secondary cpus out of their spinloops at 0x60 now that |
408 | * we can map physical -> logical CPU ids | |
409 | */ | |
410 | smp_release_cpus(); | |
f018b36f | 411 | #endif |
40ef8cbc | 412 | |
96b644bd | 413 | printk("Starting Linux PPC64 %s\n", init_utsname()->version); |
40ef8cbc PM |
414 | |
415 | printk("-----------------------------------------------------\n"); | |
416 | printk("ppc64_pft_size = 0x%lx\n", ppc64_pft_size); | |
a7f290da | 417 | printk("physicalMemorySize = 0x%lx\n", lmb_phys_mem_size()); |
40ef8cbc | 418 | printk("ppc64_caches.dcache_line_size = 0x%x\n", |
a7f290da | 419 | ppc64_caches.dline_size); |
40ef8cbc | 420 | printk("ppc64_caches.icache_line_size = 0x%x\n", |
a7f290da | 421 | ppc64_caches.iline_size); |
40ef8cbc PM |
422 | printk("htab_address = 0x%p\n", htab_address); |
423 | printk("htab_hash_mask = 0x%lx\n", htab_hash_mask); | |
398ab1fc ME |
424 | #if PHYSICAL_START > 0 |
425 | printk("physical_start = 0x%x\n", PHYSICAL_START); | |
426 | #endif | |
40ef8cbc | 427 | printk("-----------------------------------------------------\n"); |
40ef8cbc | 428 | |
40ef8cbc PM |
429 | DBG(" <- setup_system()\n"); |
430 | } | |
431 | ||
40ef8cbc PM |
432 | #ifdef CONFIG_IRQSTACKS |
433 | static void __init irqstack_early_init(void) | |
434 | { | |
435 | unsigned int i; | |
436 | ||
437 | /* | |
438 | * interrupt stacks must be under 256MB, we cannot afford to take | |
439 | * SLB misses on them. | |
440 | */ | |
0e551954 | 441 | for_each_possible_cpu(i) { |
3c726f8d BH |
442 | softirq_ctx[i] = (struct thread_info *) |
443 | __va(lmb_alloc_base(THREAD_SIZE, | |
444 | THREAD_SIZE, 0x10000000)); | |
445 | hardirq_ctx[i] = (struct thread_info *) | |
446 | __va(lmb_alloc_base(THREAD_SIZE, | |
447 | THREAD_SIZE, 0x10000000)); | |
40ef8cbc PM |
448 | } |
449 | } | |
450 | #else | |
451 | #define irqstack_early_init() | |
452 | #endif | |
453 | ||
454 | /* | |
455 | * Stack space used when we detect a bad kernel stack pointer, and | |
456 | * early in SMP boots before relocation is enabled. | |
457 | */ | |
458 | static void __init emergency_stack_init(void) | |
459 | { | |
460 | unsigned long limit; | |
461 | unsigned int i; | |
462 | ||
463 | /* | |
464 | * Emergency stacks must be under 256MB, we cannot afford to take | |
465 | * SLB misses on them. The ABI also requires them to be 128-byte | |
466 | * aligned. | |
467 | * | |
468 | * Since we use these as temporary stacks during secondary CPU | |
469 | * bringup, we need to get at them in real mode. This means they | |
470 | * must also be within the RMO region. | |
471 | */ | |
472 | limit = min(0x10000000UL, lmb.rmo_size); | |
473 | ||
0e551954 | 474 | for_each_possible_cpu(i) |
3c726f8d BH |
475 | paca[i].emergency_sp = |
476 | __va(lmb_alloc_base(HW_PAGE_SIZE, 128, limit)) + HW_PAGE_SIZE; | |
40ef8cbc PM |
477 | } |
478 | ||
40ef8cbc PM |
479 | /* |
480 | * Called into from start_kernel, after lock_kernel has been called. | |
481 | * Initializes bootmem, which is unsed to manage page allocation until | |
482 | * mem_init is called. | |
483 | */ | |
484 | void __init setup_arch(char **cmdline_p) | |
485 | { | |
40ef8cbc PM |
486 | ppc64_boot_msg(0x12, "Setup Arch"); |
487 | ||
488 | *cmdline_p = cmd_line; | |
489 | ||
490 | /* | |
491 | * Set cache line size based on type of cpu as a default. | |
492 | * Systems with OF can look in the properties on the cpu node(s) | |
493 | * for a possibly more accurate value. | |
494 | */ | |
495 | dcache_bsize = ppc64_caches.dline_size; | |
496 | icache_bsize = ppc64_caches.iline_size; | |
497 | ||
498 | /* reboot on panic */ | |
499 | panic_timeout = 180; | |
40ef8cbc PM |
500 | |
501 | if (ppc_md.panic) | |
7e990266 | 502 | setup_panic(); |
40ef8cbc PM |
503 | |
504 | init_mm.start_code = PAGE_OFFSET; | |
505 | init_mm.end_code = (unsigned long) _etext; | |
506 | init_mm.end_data = (unsigned long) _edata; | |
507 | init_mm.brk = klimit; | |
508 | ||
509 | irqstack_early_init(); | |
510 | emergency_stack_init(); | |
511 | ||
40ef8cbc PM |
512 | stabs_alloc(); |
513 | ||
514 | /* set up the bootmem stuff with available memory */ | |
515 | do_init_bootmem(); | |
516 | sparse_init(); | |
517 | ||
0458060c PM |
518 | #ifdef CONFIG_DUMMY_CONSOLE |
519 | conswitchp = &dummy_con; | |
520 | #endif | |
521 | ||
40ef8cbc PM |
522 | ppc_md.setup_arch(); |
523 | ||
40ef8cbc PM |
524 | paging_init(); |
525 | ppc64_boot_msg(0x15, "Setup Done"); | |
526 | } | |
527 | ||
528 | ||
529 | /* ToDo: do something useful if ppc_md is not yet setup. */ | |
530 | #define PPC64_LINUX_FUNCTION 0x0f000000 | |
531 | #define PPC64_IPL_MESSAGE 0xc0000000 | |
532 | #define PPC64_TERM_MESSAGE 0xb0000000 | |
533 | ||
534 | static void ppc64_do_msg(unsigned int src, const char *msg) | |
535 | { | |
536 | if (ppc_md.progress) { | |
537 | char buf[128]; | |
538 | ||
539 | sprintf(buf, "%08X\n", src); | |
540 | ppc_md.progress(buf, 0); | |
541 | snprintf(buf, 128, "%s", msg); | |
542 | ppc_md.progress(buf, 0); | |
543 | } | |
544 | } | |
545 | ||
546 | /* Print a boot progress message. */ | |
547 | void ppc64_boot_msg(unsigned int src, const char *msg) | |
548 | { | |
549 | ppc64_do_msg(PPC64_LINUX_FUNCTION|PPC64_IPL_MESSAGE|src, msg); | |
550 | printk("[boot]%04x %s\n", src, msg); | |
551 | } | |
552 | ||
553 | /* Print a termination message (print only -- does not stop the kernel) */ | |
554 | void ppc64_terminate_msg(unsigned int src, const char *msg) | |
555 | { | |
556 | ppc64_do_msg(PPC64_LINUX_FUNCTION|PPC64_TERM_MESSAGE|src, msg); | |
557 | printk("[terminate]%04x %s\n", src, msg); | |
558 | } | |
559 | ||
40ef8cbc PM |
560 | void cpu_die(void) |
561 | { | |
562 | if (ppc_md.cpu_die) | |
563 | ppc_md.cpu_die(); | |
564 | } | |
7a0268fa AB |
565 | |
566 | #ifdef CONFIG_SMP | |
567 | void __init setup_per_cpu_areas(void) | |
568 | { | |
569 | int i; | |
570 | unsigned long size; | |
571 | char *ptr; | |
572 | ||
573 | /* Copy section for each CPU (we discard the original) */ | |
574 | size = ALIGN(__per_cpu_end - __per_cpu_start, SMP_CACHE_BYTES); | |
575 | #ifdef CONFIG_MODULES | |
576 | if (size < PERCPU_ENOUGH_ROOM) | |
577 | size = PERCPU_ENOUGH_ROOM; | |
578 | #endif | |
579 | ||
0e551954 | 580 | for_each_possible_cpu(i) { |
7a0268fa AB |
581 | ptr = alloc_bootmem_node(NODE_DATA(cpu_to_node(i)), size); |
582 | if (!ptr) | |
583 | panic("Cannot allocate cpu data for CPU %d\n", i); | |
584 | ||
585 | paca[i].data_offset = ptr - __per_cpu_start; | |
586 | memcpy(ptr, __per_cpu_start, __per_cpu_end - __per_cpu_start); | |
587 | } | |
588 | } | |
589 | #endif |