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 | ||
15 | #include <linux/config.h> | |
16 | #include <linux/module.h> | |
17 | #include <linux/string.h> | |
18 | #include <linux/sched.h> | |
19 | #include <linux/init.h> | |
20 | #include <linux/kernel.h> | |
21 | #include <linux/reboot.h> | |
22 | #include <linux/delay.h> | |
23 | #include <linux/initrd.h> | |
24 | #include <linux/ide.h> | |
25 | #include <linux/seq_file.h> | |
26 | #include <linux/ioport.h> | |
27 | #include <linux/console.h> | |
28 | #include <linux/utsname.h> | |
29 | #include <linux/tty.h> | |
30 | #include <linux/root_dev.h> | |
31 | #include <linux/notifier.h> | |
32 | #include <linux/cpu.h> | |
33 | #include <linux/unistd.h> | |
34 | #include <linux/serial.h> | |
35 | #include <linux/serial_8250.h> | |
7a0268fa | 36 | #include <linux/bootmem.h> |
40ef8cbc | 37 | #include <asm/io.h> |
0cc4746c | 38 | #include <asm/kdump.h> |
40ef8cbc PM |
39 | #include <asm/prom.h> |
40 | #include <asm/processor.h> | |
41 | #include <asm/pgtable.h> | |
40ef8cbc PM |
42 | #include <asm/smp.h> |
43 | #include <asm/elf.h> | |
44 | #include <asm/machdep.h> | |
45 | #include <asm/paca.h> | |
40ef8cbc PM |
46 | #include <asm/time.h> |
47 | #include <asm/cputable.h> | |
48 | #include <asm/sections.h> | |
49 | #include <asm/btext.h> | |
50 | #include <asm/nvram.h> | |
51 | #include <asm/setup.h> | |
52 | #include <asm/system.h> | |
53 | #include <asm/rtas.h> | |
54 | #include <asm/iommu.h> | |
55 | #include <asm/serial.h> | |
56 | #include <asm/cache.h> | |
57 | #include <asm/page.h> | |
58 | #include <asm/mmu.h> | |
59 | #include <asm/lmb.h> | |
f218aab5 | 60 | #include <asm/iseries/it_lp_naca.h> |
40ef8cbc | 61 | #include <asm/firmware.h> |
f78541dc | 62 | #include <asm/xmon.h> |
dcad47fc | 63 | #include <asm/udbg.h> |
593e537b | 64 | #include <asm/kexec.h> |
40ef8cbc | 65 | |
66ba135c SR |
66 | #include "setup.h" |
67 | ||
40ef8cbc PM |
68 | #ifdef DEBUG |
69 | #define DBG(fmt...) udbg_printf(fmt) | |
70 | #else | |
71 | #define DBG(fmt...) | |
72 | #endif | |
73 | ||
40ef8cbc PM |
74 | int have_of = 1; |
75 | int boot_cpuid = 0; | |
40ef8cbc PM |
76 | dev_t boot_dev; |
77 | u64 ppc64_pft_size; | |
78 | ||
dabcafd3 OJ |
79 | /* Pick defaults since we might want to patch instructions |
80 | * before we've read this from the device tree. | |
81 | */ | |
82 | struct ppc64_caches ppc64_caches = { | |
83 | .dline_size = 0x80, | |
84 | .log_dline_size = 7, | |
85 | .iline_size = 0x80, | |
86 | .log_iline_size = 7 | |
87 | }; | |
40ef8cbc PM |
88 | EXPORT_SYMBOL_GPL(ppc64_caches); |
89 | ||
90 | /* | |
91 | * These are used in binfmt_elf.c to put aux entries on the stack | |
92 | * for each elf executable being started. | |
93 | */ | |
94 | int dcache_bsize; | |
95 | int icache_bsize; | |
96 | int ucache_bsize; | |
97 | ||
40ef8cbc PM |
98 | #ifdef CONFIG_MAGIC_SYSRQ |
99 | unsigned long SYSRQ_KEY; | |
100 | #endif /* CONFIG_MAGIC_SYSRQ */ | |
101 | ||
102 | ||
40ef8cbc PM |
103 | #ifdef CONFIG_SMP |
104 | ||
105 | static int smt_enabled_cmdline; | |
106 | ||
107 | /* Look for ibm,smt-enabled OF option */ | |
108 | static void check_smt_enabled(void) | |
109 | { | |
110 | struct device_node *dn; | |
111 | char *smt_option; | |
112 | ||
113 | /* Allow the command line to overrule the OF option */ | |
114 | if (smt_enabled_cmdline) | |
115 | return; | |
116 | ||
117 | dn = of_find_node_by_path("/options"); | |
118 | ||
119 | if (dn) { | |
120 | smt_option = (char *)get_property(dn, "ibm,smt-enabled", NULL); | |
121 | ||
122 | if (smt_option) { | |
123 | if (!strcmp(smt_option, "on")) | |
124 | smt_enabled_at_boot = 1; | |
125 | else if (!strcmp(smt_option, "off")) | |
126 | smt_enabled_at_boot = 0; | |
127 | } | |
128 | } | |
129 | } | |
130 | ||
131 | /* Look for smt-enabled= cmdline option */ | |
132 | static int __init early_smt_enabled(char *p) | |
133 | { | |
134 | smt_enabled_cmdline = 1; | |
135 | ||
136 | if (!p) | |
137 | return 0; | |
138 | ||
139 | if (!strcmp(p, "on") || !strcmp(p, "1")) | |
140 | smt_enabled_at_boot = 1; | |
141 | else if (!strcmp(p, "off") || !strcmp(p, "0")) | |
142 | smt_enabled_at_boot = 0; | |
143 | ||
144 | return 0; | |
145 | } | |
146 | early_param("smt-enabled", early_smt_enabled); | |
147 | ||
5ad57078 PM |
148 | #else |
149 | #define check_smt_enabled() | |
40ef8cbc PM |
150 | #endif /* CONFIG_SMP */ |
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 | { | |
296167ae ME |
173 | /* Enable early debugging if any specified (see udbg.h) */ |
174 | udbg_early_init(); | |
40ef8cbc | 175 | |
e8222502 | 176 | DBG(" -> early_setup(), dt_ptr: 0x%lx\n", dt_ptr); |
40ef8cbc | 177 | |
40ef8cbc PM |
178 | /* |
179 | * Do early initializations using the flattened device | |
180 | * tree, like retreiving the physical memory map or | |
181 | * calculating/retreiving the hash table size | |
182 | */ | |
183 | early_init_devtree(__va(dt_ptr)); | |
184 | ||
4df20460 AB |
185 | /* Now we know the logical id of our boot cpu, setup the paca. */ |
186 | setup_boot_paca(); | |
187 | ||
188 | /* Fix up paca fields required for the boot cpu */ | |
189 | get_paca()->cpu_start = 1; | |
190 | get_paca()->stab_real = __pa((u64)&initial_stab); | |
191 | get_paca()->stab_addr = (u64)&initial_stab; | |
192 | ||
e8222502 BH |
193 | /* Probe the machine type */ |
194 | probe_machine(); | |
40ef8cbc | 195 | |
0cc4746c ME |
196 | #ifdef CONFIG_CRASH_DUMP |
197 | kdump_setup(); | |
198 | #endif | |
199 | ||
40ef8cbc PM |
200 | DBG("Found, Initializing memory management...\n"); |
201 | ||
202 | /* | |
3c726f8d BH |
203 | * Initialize the MMU Hash table and create the linear mapping |
204 | * of memory. Has to be done before stab/slb initialization as | |
205 | * this is currently where the page size encoding is obtained | |
40ef8cbc | 206 | */ |
3c726f8d | 207 | htab_initialize(); |
40ef8cbc PM |
208 | |
209 | /* | |
3c726f8d | 210 | * Initialize stab / SLB management except on iSeries |
40ef8cbc | 211 | */ |
856d08ec SR |
212 | if (cpu_has_feature(CPU_FTR_SLB)) |
213 | slb_initialize(); | |
214 | else if (!firmware_has_feature(FW_FEATURE_ISERIES)) | |
215 | stab_initialize(get_paca()->stab_real); | |
40ef8cbc PM |
216 | |
217 | DBG(" <- early_setup()\n"); | |
218 | } | |
219 | ||
799d6046 PM |
220 | #ifdef CONFIG_SMP |
221 | void early_setup_secondary(void) | |
222 | { | |
223 | struct paca_struct *lpaca = get_paca(); | |
224 | ||
225 | /* Mark enabled in PACA */ | |
226 | lpaca->proc_enabled = 0; | |
227 | ||
228 | /* Initialize hash table for that CPU */ | |
229 | htab_initialize_secondary(); | |
230 | ||
231 | /* Initialize STAB/SLB. We use a virtual address as it works | |
232 | * in real mode on pSeries and we want a virutal address on | |
233 | * iSeries anyway | |
234 | */ | |
235 | if (cpu_has_feature(CPU_FTR_SLB)) | |
236 | slb_initialize(); | |
237 | else | |
238 | stab_initialize(lpaca->stab_addr); | |
239 | } | |
240 | ||
241 | #endif /* CONFIG_SMP */ | |
40ef8cbc | 242 | |
b8f51021 ME |
243 | #if defined(CONFIG_SMP) || defined(CONFIG_KEXEC) |
244 | void smp_release_cpus(void) | |
245 | { | |
246 | extern unsigned long __secondary_hold_spinloop; | |
758438a7 | 247 | unsigned long *ptr; |
b8f51021 ME |
248 | |
249 | DBG(" -> smp_release_cpus()\n"); | |
250 | ||
251 | /* All secondary cpus are spinning on a common spinloop, release them | |
252 | * all now so they can start to spin on their individual paca | |
253 | * spinloops. For non SMP kernels, the secondary cpus never get out | |
254 | * of the common spinloop. | |
255 | * This is useless but harmless on iSeries, secondaries are already | |
256 | * waiting on their paca spinloops. */ | |
257 | ||
758438a7 ME |
258 | ptr = (unsigned long *)((unsigned long)&__secondary_hold_spinloop |
259 | - PHYSICAL_START); | |
260 | *ptr = 1; | |
b8f51021 ME |
261 | mb(); |
262 | ||
263 | DBG(" <- smp_release_cpus()\n"); | |
264 | } | |
265 | #endif /* CONFIG_SMP || CONFIG_KEXEC */ | |
266 | ||
40ef8cbc | 267 | /* |
799d6046 PM |
268 | * Initialize some remaining members of the ppc64_caches and systemcfg |
269 | * structures | |
40ef8cbc PM |
270 | * (at least until we get rid of them completely). This is mostly some |
271 | * cache informations about the CPU that will be used by cache flush | |
272 | * routines and/or provided to userland | |
273 | */ | |
274 | static void __init initialize_cache_info(void) | |
275 | { | |
276 | struct device_node *np; | |
277 | unsigned long num_cpus = 0; | |
278 | ||
279 | DBG(" -> initialize_cache_info()\n"); | |
280 | ||
281 | for (np = NULL; (np = of_find_node_by_type(np, "cpu"));) { | |
282 | num_cpus += 1; | |
283 | ||
284 | /* We're assuming *all* of the CPUs have the same | |
285 | * d-cache and i-cache sizes... -Peter | |
286 | */ | |
287 | ||
288 | if ( num_cpus == 1 ) { | |
289 | u32 *sizep, *lsizep; | |
290 | u32 size, lsize; | |
291 | const char *dc, *ic; | |
292 | ||
293 | /* Then read cache informations */ | |
e8222502 | 294 | if (machine_is(powermac)) { |
40ef8cbc PM |
295 | dc = "d-cache-block-size"; |
296 | ic = "i-cache-block-size"; | |
297 | } else { | |
298 | dc = "d-cache-line-size"; | |
299 | ic = "i-cache-line-size"; | |
300 | } | |
301 | ||
302 | size = 0; | |
303 | lsize = cur_cpu_spec->dcache_bsize; | |
304 | sizep = (u32 *)get_property(np, "d-cache-size", NULL); | |
305 | if (sizep != NULL) | |
306 | size = *sizep; | |
307 | lsizep = (u32 *) get_property(np, dc, NULL); | |
308 | if (lsizep != NULL) | |
309 | lsize = *lsizep; | |
310 | if (sizep == 0 || lsizep == 0) | |
311 | DBG("Argh, can't find dcache properties ! " | |
312 | "sizep: %p, lsizep: %p\n", sizep, lsizep); | |
313 | ||
a7f290da BH |
314 | ppc64_caches.dsize = size; |
315 | ppc64_caches.dline_size = lsize; | |
40ef8cbc PM |
316 | ppc64_caches.log_dline_size = __ilog2(lsize); |
317 | ppc64_caches.dlines_per_page = PAGE_SIZE / lsize; | |
318 | ||
319 | size = 0; | |
320 | lsize = cur_cpu_spec->icache_bsize; | |
321 | sizep = (u32 *)get_property(np, "i-cache-size", NULL); | |
322 | if (sizep != NULL) | |
323 | size = *sizep; | |
324 | lsizep = (u32 *)get_property(np, ic, NULL); | |
325 | if (lsizep != NULL) | |
326 | lsize = *lsizep; | |
327 | if (sizep == 0 || lsizep == 0) | |
328 | DBG("Argh, can't find icache properties ! " | |
329 | "sizep: %p, lsizep: %p\n", sizep, lsizep); | |
330 | ||
a7f290da BH |
331 | ppc64_caches.isize = size; |
332 | ppc64_caches.iline_size = lsize; | |
40ef8cbc PM |
333 | ppc64_caches.log_iline_size = __ilog2(lsize); |
334 | ppc64_caches.ilines_per_page = PAGE_SIZE / lsize; | |
335 | } | |
336 | } | |
337 | ||
40ef8cbc PM |
338 | DBG(" <- initialize_cache_info()\n"); |
339 | } | |
340 | ||
40ef8cbc PM |
341 | |
342 | /* | |
343 | * Do some initial setup of the system. The parameters are those which | |
344 | * were passed in from the bootloader. | |
345 | */ | |
346 | void __init setup_system(void) | |
347 | { | |
348 | DBG(" -> setup_system()\n"); | |
349 | ||
b68239ee ME |
350 | #ifdef CONFIG_KEXEC |
351 | kdump_move_device_tree(); | |
352 | #endif | |
40ef8cbc PM |
353 | /* |
354 | * Unflatten the device-tree passed by prom_init or kexec | |
355 | */ | |
356 | unflatten_device_tree(); | |
357 | ||
593e537b ME |
358 | #ifdef CONFIG_KEXEC |
359 | kexec_setup(); /* requires unflattened device tree. */ | |
360 | #endif | |
361 | ||
40ef8cbc PM |
362 | /* |
363 | * Fill the ppc64_caches & systemcfg structures with informations | |
943ffb58 | 364 | * retrieved from the device-tree. Need to be called before |
40ef8cbc PM |
365 | * finish_device_tree() since the later requires some of the |
366 | * informations filled up here to properly parse the interrupt | |
367 | * tree. | |
368 | * It also sets up the cache line sizes which allows to call | |
369 | * routines like flush_icache_range (used by the hash init | |
370 | * later on). | |
371 | */ | |
372 | initialize_cache_info(); | |
373 | ||
374 | #ifdef CONFIG_PPC_RTAS | |
375 | /* | |
376 | * Initialize RTAS if available | |
377 | */ | |
378 | rtas_initialize(); | |
379 | #endif /* CONFIG_PPC_RTAS */ | |
40ef8cbc PM |
380 | |
381 | /* | |
382 | * Check if we have an initrd provided via the device-tree | |
383 | */ | |
384 | check_for_initrd(); | |
40ef8cbc PM |
385 | |
386 | /* | |
387 | * Do some platform specific early initializations, that includes | |
388 | * setting up the hash table pointers. It also sets up some interrupt-mapping | |
389 | * related options that will be used by finish_device_tree() | |
390 | */ | |
391 | ppc_md.init_early(); | |
40ef8cbc | 392 | |
463ce0e1 BH |
393 | /* |
394 | * We can discover serial ports now since the above did setup the | |
395 | * hash table management for us, thus ioremap works. We do that early | |
396 | * so that further code can be debugged | |
397 | */ | |
463ce0e1 | 398 | find_legacy_serial_ports(); |
463ce0e1 | 399 | |
40ef8cbc PM |
400 | /* |
401 | * "Finish" the device-tree, that is do the actual parsing of | |
402 | * some of the properties like the interrupt map | |
403 | */ | |
404 | finish_device_tree(); | |
40ef8cbc PM |
405 | |
406 | /* | |
407 | * Initialize xmon | |
408 | */ | |
409 | #ifdef CONFIG_XMON_DEFAULT | |
410 | xmon_init(1); | |
411 | #endif | |
40ef8cbc PM |
412 | /* |
413 | * Register early console | |
414 | */ | |
415 | register_early_udbg_console(); | |
40ef8cbc PM |
416 | |
417 | /* Save unparsed command line copy for /proc/cmdline */ | |
418 | strlcpy(saved_command_line, cmd_line, COMMAND_LINE_SIZE); | |
419 | ||
420 | parse_early_param(); | |
40ef8cbc | 421 | |
5ad57078 PM |
422 | check_smt_enabled(); |
423 | smp_setup_cpu_maps(); | |
40ef8cbc | 424 | |
f018b36f | 425 | #ifdef CONFIG_SMP |
40ef8cbc PM |
426 | /* Release secondary cpus out of their spinloops at 0x60 now that |
427 | * we can map physical -> logical CPU ids | |
428 | */ | |
429 | smp_release_cpus(); | |
f018b36f | 430 | #endif |
40ef8cbc PM |
431 | |
432 | printk("Starting Linux PPC64 %s\n", system_utsname.version); | |
433 | ||
434 | printk("-----------------------------------------------------\n"); | |
435 | printk("ppc64_pft_size = 0x%lx\n", ppc64_pft_size); | |
a7f290da BH |
436 | printk("ppc64_interrupt_controller = 0x%ld\n", |
437 | ppc64_interrupt_controller); | |
a7f290da | 438 | printk("physicalMemorySize = 0x%lx\n", lmb_phys_mem_size()); |
40ef8cbc | 439 | printk("ppc64_caches.dcache_line_size = 0x%x\n", |
a7f290da | 440 | ppc64_caches.dline_size); |
40ef8cbc | 441 | printk("ppc64_caches.icache_line_size = 0x%x\n", |
a7f290da | 442 | ppc64_caches.iline_size); |
40ef8cbc PM |
443 | printk("htab_address = 0x%p\n", htab_address); |
444 | printk("htab_hash_mask = 0x%lx\n", htab_hash_mask); | |
398ab1fc ME |
445 | #if PHYSICAL_START > 0 |
446 | printk("physical_start = 0x%x\n", PHYSICAL_START); | |
447 | #endif | |
40ef8cbc | 448 | printk("-----------------------------------------------------\n"); |
40ef8cbc | 449 | |
40ef8cbc PM |
450 | DBG(" <- setup_system()\n"); |
451 | } | |
452 | ||
40ef8cbc PM |
453 | #ifdef CONFIG_IRQSTACKS |
454 | static void __init irqstack_early_init(void) | |
455 | { | |
456 | unsigned int i; | |
457 | ||
458 | /* | |
459 | * interrupt stacks must be under 256MB, we cannot afford to take | |
460 | * SLB misses on them. | |
461 | */ | |
0e551954 | 462 | for_each_possible_cpu(i) { |
3c726f8d BH |
463 | softirq_ctx[i] = (struct thread_info *) |
464 | __va(lmb_alloc_base(THREAD_SIZE, | |
465 | THREAD_SIZE, 0x10000000)); | |
466 | hardirq_ctx[i] = (struct thread_info *) | |
467 | __va(lmb_alloc_base(THREAD_SIZE, | |
468 | THREAD_SIZE, 0x10000000)); | |
40ef8cbc PM |
469 | } |
470 | } | |
471 | #else | |
472 | #define irqstack_early_init() | |
473 | #endif | |
474 | ||
475 | /* | |
476 | * Stack space used when we detect a bad kernel stack pointer, and | |
477 | * early in SMP boots before relocation is enabled. | |
478 | */ | |
479 | static void __init emergency_stack_init(void) | |
480 | { | |
481 | unsigned long limit; | |
482 | unsigned int i; | |
483 | ||
484 | /* | |
485 | * Emergency stacks must be under 256MB, we cannot afford to take | |
486 | * SLB misses on them. The ABI also requires them to be 128-byte | |
487 | * aligned. | |
488 | * | |
489 | * Since we use these as temporary stacks during secondary CPU | |
490 | * bringup, we need to get at them in real mode. This means they | |
491 | * must also be within the RMO region. | |
492 | */ | |
493 | limit = min(0x10000000UL, lmb.rmo_size); | |
494 | ||
0e551954 | 495 | for_each_possible_cpu(i) |
3c726f8d BH |
496 | paca[i].emergency_sp = |
497 | __va(lmb_alloc_base(HW_PAGE_SIZE, 128, limit)) + HW_PAGE_SIZE; | |
40ef8cbc PM |
498 | } |
499 | ||
40ef8cbc PM |
500 | /* |
501 | * Called into from start_kernel, after lock_kernel has been called. | |
502 | * Initializes bootmem, which is unsed to manage page allocation until | |
503 | * mem_init is called. | |
504 | */ | |
505 | void __init setup_arch(char **cmdline_p) | |
506 | { | |
40ef8cbc PM |
507 | ppc64_boot_msg(0x12, "Setup Arch"); |
508 | ||
509 | *cmdline_p = cmd_line; | |
510 | ||
511 | /* | |
512 | * Set cache line size based on type of cpu as a default. | |
513 | * Systems with OF can look in the properties on the cpu node(s) | |
514 | * for a possibly more accurate value. | |
515 | */ | |
516 | dcache_bsize = ppc64_caches.dline_size; | |
517 | icache_bsize = ppc64_caches.iline_size; | |
518 | ||
519 | /* reboot on panic */ | |
520 | panic_timeout = 180; | |
40ef8cbc PM |
521 | |
522 | if (ppc_md.panic) | |
7e990266 | 523 | setup_panic(); |
40ef8cbc PM |
524 | |
525 | init_mm.start_code = PAGE_OFFSET; | |
526 | init_mm.end_code = (unsigned long) _etext; | |
527 | init_mm.end_data = (unsigned long) _edata; | |
528 | init_mm.brk = klimit; | |
529 | ||
530 | irqstack_early_init(); | |
531 | emergency_stack_init(); | |
532 | ||
40ef8cbc PM |
533 | stabs_alloc(); |
534 | ||
535 | /* set up the bootmem stuff with available memory */ | |
536 | do_init_bootmem(); | |
537 | sparse_init(); | |
538 | ||
0458060c PM |
539 | #ifdef CONFIG_DUMMY_CONSOLE |
540 | conswitchp = &dummy_con; | |
541 | #endif | |
542 | ||
40ef8cbc PM |
543 | ppc_md.setup_arch(); |
544 | ||
40ef8cbc PM |
545 | paging_init(); |
546 | ppc64_boot_msg(0x15, "Setup Done"); | |
547 | } | |
548 | ||
549 | ||
550 | /* ToDo: do something useful if ppc_md is not yet setup. */ | |
551 | #define PPC64_LINUX_FUNCTION 0x0f000000 | |
552 | #define PPC64_IPL_MESSAGE 0xc0000000 | |
553 | #define PPC64_TERM_MESSAGE 0xb0000000 | |
554 | ||
555 | static void ppc64_do_msg(unsigned int src, const char *msg) | |
556 | { | |
557 | if (ppc_md.progress) { | |
558 | char buf[128]; | |
559 | ||
560 | sprintf(buf, "%08X\n", src); | |
561 | ppc_md.progress(buf, 0); | |
562 | snprintf(buf, 128, "%s", msg); | |
563 | ppc_md.progress(buf, 0); | |
564 | } | |
565 | } | |
566 | ||
567 | /* Print a boot progress message. */ | |
568 | void ppc64_boot_msg(unsigned int src, const char *msg) | |
569 | { | |
570 | ppc64_do_msg(PPC64_LINUX_FUNCTION|PPC64_IPL_MESSAGE|src, msg); | |
571 | printk("[boot]%04x %s\n", src, msg); | |
572 | } | |
573 | ||
574 | /* Print a termination message (print only -- does not stop the kernel) */ | |
575 | void ppc64_terminate_msg(unsigned int src, const char *msg) | |
576 | { | |
577 | ppc64_do_msg(PPC64_LINUX_FUNCTION|PPC64_TERM_MESSAGE|src, msg); | |
578 | printk("[terminate]%04x %s\n", src, msg); | |
579 | } | |
580 | ||
40ef8cbc PM |
581 | void cpu_die(void) |
582 | { | |
583 | if (ppc_md.cpu_die) | |
584 | ppc_md.cpu_die(); | |
585 | } | |
7a0268fa AB |
586 | |
587 | #ifdef CONFIG_SMP | |
588 | void __init setup_per_cpu_areas(void) | |
589 | { | |
590 | int i; | |
591 | unsigned long size; | |
592 | char *ptr; | |
593 | ||
594 | /* Copy section for each CPU (we discard the original) */ | |
595 | size = ALIGN(__per_cpu_end - __per_cpu_start, SMP_CACHE_BYTES); | |
596 | #ifdef CONFIG_MODULES | |
597 | if (size < PERCPU_ENOUGH_ROOM) | |
598 | size = PERCPU_ENOUGH_ROOM; | |
599 | #endif | |
600 | ||
0e551954 | 601 | for_each_possible_cpu(i) { |
7a0268fa AB |
602 | ptr = alloc_bootmem_node(NODE_DATA(cpu_to_node(i)), size); |
603 | if (!ptr) | |
604 | panic("Cannot allocate cpu data for CPU %d\n", i); | |
605 | ||
606 | paca[i].data_offset = ptr - __per_cpu_start; | |
607 | memcpy(ptr, __per_cpu_start, __per_cpu_end - __per_cpu_start); | |
608 | } | |
609 | } | |
610 | #endif |