| Start/ | End/ | |||
| True | False | - | Line | Source |
| 1 | /* | |||
| 2 | * linux/init/main.c | |||
| 3 | * | |||
| 4 | * Copyright (C) 1991, 1992 Linus Torvalds | |||
| 5 | * | |||
| 6 | * GK 2/5/95 - Changed to support mounting root fs via NFS | |||
| 7 | * Added initrd & change_root: Werner Almesberger & Hans Lermen, Feb '96 | |||
| 8 | * Moan early if gcc is old, avoiding bogus kernels - Paul Gortmaker, May '96 | |||
| 9 | * Simplified starting of init: Michael A. Griffith <grif@acm.org> | |||
| 10 | */ | |||
| 11 | ||||
| 12 | #define __KERNEL_SYSCALLS__ | |||
| 13 | ||||
| 14 | #include <linux/config.h> | |||
| 15 | #include <linux/types.h> | |||
| 16 | #include <linux/module.h> | |||
| 17 | #include <linux/proc_fs.h> | |||
| 18 | #include <linux/devfs_fs_kernel.h> | |||
| 19 | #include <linux/kernel.h> | |||
| 20 | #include <linux/syscalls.h> | |||
| 21 | #include <linux/string.h> | |||
| 22 | #include <linux/ctype.h> | |||
| 23 | #include <linux/delay.h> | |||
| 24 | #include <linux/utsname.h> | |||
| 25 | #include <linux/ioport.h> | |||
| 26 | #include <linux/init.h> | |||
| 27 | #include <linux/smp_lock.h> | |||
| 28 | #include <linux/initrd.h> | |||
| 29 | #include <linux/hdreg.h> | |||
| 30 | #include <linux/bootmem.h> | |||
| 31 | #include <linux/tty.h> | |||
| 32 | #include <linux/gfp.h> | |||
| 33 | #include <linux/percpu.h> | |||
| 34 | #include <linux/kmod.h> | |||
| 35 | #include <linux/kernel_stat.h> | |||
| 36 | #include <linux/security.h> | |||
| 37 | #include <linux/workqueue.h> | |||
| 38 | #include <linux/profile.h> | |||
| 39 | #include <linux/rcupdate.h> | |||
| 40 | #include <linux/moduleparam.h> | |||
| 41 | #include <linux/kallsyms.h> | |||
| 42 | #include <linux/writeback.h> | |||
| 43 | #include <linux/cpu.h> | |||
| 44 | #include <linux/cpuset.h> | |||
| 45 | #include <linux/efi.h> | |||
| 46 | #include <linux/unistd.h> | |||
| 47 | #include <linux/rmap.h> | |||
| 48 | #include <linux/mempolicy.h> | |||
| 49 | #include <linux/key.h> | |||
| 50 | ||||
| 51 | #include <asm/io.h> | |||
| 52 | #include <asm/bugs.h> | |||
| 53 | #include <asm/setup.h> | |||
| 54 | #include <asm/sections.h> | |||
| 55 | #include <asm/cacheflush.h> | |||
| 56 | ||||
| 57 | #ifdef CONFIG_X86_LOCAL_APIC | |||
| 58 | #include <asm/smp.h> | |||
| 59 | #endif | |||
| 60 | ||||
| 61 | /* | |||
| 62 | * This is one of the first .c files built. Error out early if we have compiler | |||
| 63 | * trouble. | |||
| 64 | * | |||
| 65 | * Versions of gcc older than that listed below may actually compile and link | |||
| 66 | * okay, but the end product can have subtle run time bugs. To avoid associated | |||
| 67 | * bogus bug reports, we flatly refuse to compile with a gcc that is known to be | |||
| 68 | * too old from the very beginning. | |||
| 69 | */ | |||
| 70 | #if (__GNUC__ < 3) || (__GNUC__ == 3 && __GNUC_MINOR__ < 2) | |||
| 71 | #error Sorry, your GCC is too old. It builds incorrect kernels. | |||
| 72 | #endif | |||
| 73 | ||||
| 74 | static int init(void *); | |||
| 75 | ||||
| 76 | extern void init_IRQ(void); | |||
| 77 | extern void fork_init(unsigned long); | |||
| 78 | extern void mca_init(void); | |||
| 79 | extern void sbus_init(void); | |||
| 80 | extern void sysctl_init(void); | |||
| 81 | extern void signals_init(void); | |||
| 82 | extern void buffer_init(void); | |||
| 83 | extern void pidhash_init(void); | |||
| 84 | extern void pidmap_init(void); | |||
| 85 | extern void prio_tree_init(void); | |||
| 86 | extern void radix_tree_init(void); | |||
| 87 | extern void free_initmem(void); | |||
| 88 | extern void populate_rootfs(void); | |||
| 89 | extern void driver_init(void); | |||
| 90 | extern void prepare_namespace(void); | |||
| 91 | #ifdef CONFIG_ACPI | |||
| 92 | extern void acpi_early_init(void); | |||
| 93 | #else | |||
| 94 | static inline void acpi_early_init(void) { } | |||
| 95 | #endif | |||
| 96 | #ifndef CONFIG_DEBUG_RODATA | |||
| 3 | 3 | 97 | static inline void mark_rodata_ro(void) { } | |
| 98 | #endif | |||
| 99 | ||||
| 100 | #ifdef CONFIG_TC | |||
| 101 | extern void tc_init(void); | |||
| 102 | #endif | |||
| 103 | ||||
| 104 | enum system_states system_state; | |||
| 105 | EXPORT_SYMBOL(system_state); | |||
| 106 | ||||
| 107 | /* | |||
| 108 | * Boot command-line arguments | |||
| 109 | */ | |||
| 110 | #define MAX_INIT_ARGS CONFIG_INIT_ENV_ARG_LIMIT | |||
| 111 | #define MAX_INIT_ENVS CONFIG_INIT_ENV_ARG_LIMIT | |||
| 112 | ||||
| 113 | extern void time_init(void); | |||
| 114 | /* Default late time init is NULL. archs can override this later. */ | |||
| 115 | void (*late_time_init)(void); | |||
| 116 | extern void softirq_init(void); | |||
| 117 | ||||
| 118 | /* Untouched command line (eg. for /proc) saved by arch-specific code. */ | |||
| 119 | char saved_command_line[COMMAND_LINE_SIZE]; | |||
| 120 | ||||
| 121 | static char *execute_command; | |||
| 122 | static char *ramdisk_execute_command; | |||
| 123 | ||||
| 124 | /* Setup configured maximum number of CPUs to activate */ | |||
| 125 | static unsigned int max_cpus = NR_CPUS; | |||
| 126 | ||||
| 127 | /* | |||
| 128 | * Setup routine for controlling SMP activation | |||
| 129 | * | |||
| 130 | * Command-line option of "nosmp" or "maxcpus=0" will disable SMP | |||
| 131 | * activation entirely (the MPS table probe still happens, though). | |||
| 132 | * | |||
| 133 | * Command-line option of "maxcpus=<NUM>", where <NUM> is an integer | |||
| 134 | * greater than 0, limits the maximum number of CPUs activated in | |||
| 135 | * SMP mode to <NUM>. | |||
| 136 | */ | |||
| 0 | 0 | - | 137 | static int __init nosmp(char *str) |
| 138 | { | |||
| 139 | max_cpus = 0; | |||
| 0 | - | 140 | return 1; | |
| 141 | } | |||
| 142 | ||||
| 143 | __setup("nosmp", nosmp); | |||
| 144 | ||||
| 0 | 0 | - | 145 | static int __init maxcpus(char *str) |
| 146 | { | |||
| 147 | get_option(&str, &max_cpus); | |||
| 0 | - | 148 | return 1; | |
| 149 | } | |||
| 150 | ||||
| 151 | __setup("maxcpus=", maxcpus); | |||
| 152 | ||||
| 153 | static char * argv_init[MAX_INIT_ARGS+2] = { "init", NULL, }; | |||
| 154 | char * envp_init[MAX_INIT_ENVS+2] = { "HOME=/", "TERM=linux", NULL, }; | |||
| 155 | static const char *panic_later, *panic_param; | |||
| 156 | ||||
| 157 | extern struct obs_kernel_param __setup_start[], __setup_end[]; | |||
| 158 | ||||
| 3 | 0 | 159 | static int __init obsolete_checksetup(char *line) | |
| 160 | { | |||
| 161 | struct obs_kernel_param *p; | |||
| 162 | ||||
| 163 | p = __setup_start; | |||
| 164 | do { | |||
| 165 | int n = strlen(p->str); | |||
| 3 | 33 | 166 | if (!strncmp(line, p->str, n)) { | |
| 0 | 3 | - | 167 | if (p->early) { |
| 168 | /* Already done in parse_early_param? (Needs | |||
| 169 | * exact match on param part) */ | |||
| 0 | 0 | - | 170 | if (line[n] == '\0' || line[n] == '=') |
| 0 | - | 170 | T || _ | |
| 0 | - | 170 | F || T | |
| 0 | - | 170 | F || F | |
| 0 | - | 171 | return 1; | |
| 0 | 3 | - | 172 | } else if (!p->setup_func) { |
| 173 | printk(KERN_WARNING "Parameter %s is obsolete," | |||
| 174 | " ignored\n", p->str); | |||
| 0 | - | 175 | return 1; | |
| 3 | 0 | - | 176 | } else if (p->setup_func(line + n)) |
| 3 | 177 | return 1; | ||
| 178 | } | |||
| 179 | p++; | |||
| 33 | 0 | - | 180 | } while (p < __setup_end); |
| 0 | - | 181 | return 0; | |
| 182 | } | |||
| 183 | ||||
| 184 | /* | |||
| 185 | * This should be approx 2 Bo*oMips to start (note initial shift), and will | |||
| 186 | * still work even if initially too large, it will just take slightly longer | |||
| 187 | */ | |||
| 188 | unsigned long loops_per_jiffy = (1<<12); | |||
| 189 | ||||
| 190 | EXPORT_SYMBOL(loops_per_jiffy); | |||
| 191 | ||||
| 0 | 0 | - | 192 | static int __init debug_kernel(char *str) |
| 193 | { | |||
| 0 | 0 | - | 194 | if (*str) |
| 0 | - | 195 | return 0; | |
| 196 | console_loglevel = 10; | |||
| 0 | - | 197 | return 1; | |
| 198 | } | |||
| 199 | ||||
| 0 | 0 | - | 200 | static int __init quiet_kernel(char *str) |
| 201 | { | |||
| 0 | 0 | - | 202 | if (*str) |
| 0 | - | 203 | return 0; | |
| 204 | console_loglevel = 4; | |||
| 0 | - | 205 | return 1; | |
| 206 | } | |||
| 207 | ||||
| 208 | __setup("debug", debug_kernel); | |||
| 209 | __setup("quiet", quiet_kernel); | |||
| 210 | ||||
| 0 | 0 | - | 211 | static int __init loglevel(char *str) |
| 212 | { | |||
| 213 | get_option(&str, &console_loglevel); | |||
| 0 | - | 214 | return 1; | |
| 215 | } | |||
| 216 | ||||
| 217 | __setup("loglevel=", loglevel); | |||
| 218 | ||||
| 219 | /* | |||
| 220 | * Unknown boot options get handed to init, unless they look like | |||
| 221 | * failed parameters | |||
| 222 | */ | |||
| 3 | 0 | 223 | static int __init unknown_bootoption(char *param, char *val) | |
| 224 | { | |||
| 225 | /* Change NUL term back to "=", to make "param" the whole string. */ | |||
| 3 | 0 | - | 226 | if (val) { |
| 227 | /* param=val or param="val"? */ | |||
| 3 | 0 | - | 228 | if (val == param+strlen(param)+1) |
| 229 | val[-1] = '='; | |||
| 0 | 0 | - | 230 | else if (val == param+strlen(param)+2) { |
| 231 | val[-2] = '='; | |||
| 232 | memmove(val-1, val, strlen(val)+1); | |||
| 233 | val--; | |||
| 234 | } else | |||
| 235 | BUG(); | |||
| 236 | } | |||
| 237 | ||||
| 238 | /* Handle obsolete-style parameters */ | |||
| 3 | 0 | - | 239 | if (obsolete_checksetup(param)) |
| 3 | 240 | return 0; | ||
| 241 | ||||
| 242 | /* | |||
| 243 | * Preemptive maintenance for "why didn't my mispelled command | |||
| 244 | * line work?" | |||
| 245 | */ | |||
| 0 | 0 | - | 246 | if (strchr(param, '.') && (!val || strchr(param, '.') < val)) { |
| 0 | - | 246 | T && (T || _) | |
| 0 | - | 246 | T && (F || T) | |
| 0 | - | 246 | T && (F || F) | |
| 0 | - | 246 | F && (_ || _) | |
| 247 | printk(KERN_ERR "Unknown boot option `%s': ignoring\n", param); | |||
| 0 | - | 248 | return 0; | |
| 249 | } | |||
| 250 | ||||
| 0 | 0 | - | 251 | if (panic_later) |
| 0 | - | 252 | return 0; | |
| 253 | ||||
| 0 | 0 | - | 254 | if (val) { |
| 255 | /* Environment option */ | |||
| 256 | unsigned int i; | |||
| 0 | 0 | - | 257 | for (i = 0; envp_init[i]; i++) { |
| 0 | 0 | - | 258 | if (i == MAX_INIT_ENVS) { |
| 259 | panic_later = "Too many boot env vars at `%s'"; | |||
| 260 | panic_param = param; | |||
| 261 | } | |||
| 0 | 0 | - | 262 | if (!strncmp(param, envp_init[i], val - param)) |
| 0 | - | 263 | break; | |
| 264 | } | |||
| 265 | envp_init[i] = param; | |||
| 266 | } else { | |||
| 267 | /* Command line option */ | |||
| 268 | unsigned int i; | |||
| 0 | 0 | - | 269 | for (i = 0; argv_init[i]; i++) { |
| 0 | 0 | - | 270 | if (i == MAX_INIT_ARGS) { |
| 271 | panic_later = "Too many boot init vars at `%s'"; | |||
| 272 | panic_param = param; | |||
| 273 | } | |||
| 274 | } | |||
| 275 | argv_init[i] = param; | |||
| 276 | } | |||
| 0 | - | 277 | return 0; | |
| 278 | } | |||
| 279 | ||||
| 0 | 0 | - | 280 | static int __init init_setup(char *str) |
| 281 | { | |||
| 282 | unsigned int i; | |||
| 283 | ||||
| 284 | execute_command = str; | |||
| 285 | /* | |||
| 286 | * In case LILO is going to boot us with default command line, | |||
| 287 | * it prepends "auto" before the whole cmdline which makes | |||
| 288 | * the shell think it should execute a script with such name. | |||
| 289 | * So we ignore all arguments entered _before_ init=... [MJ] | |||
| 290 | */ | |||
| 0 | 0 | - | 291 | for (i = 1; i < MAX_INIT_ARGS; i++) |
| 292 | argv_init[i] = NULL; | |||
| 0 | - | 293 | return 1; | |
| 294 | } | |||
| 295 | __setup("init=", init_setup); | |||
| 296 | ||||
| 0 | 0 | - | 297 | static int __init rdinit_setup(char *str) |
| 298 | { | |||
| 299 | unsigned int i; | |||
| 300 | ||||
| 301 | ramdisk_execute_command = str; | |||
| 302 | /* See "auto" comment in init_setup */ | |||
| 0 | 0 | - | 303 | for (i = 1; i < MAX_INIT_ARGS; i++) |
| 304 | argv_init[i] = NULL; | |||
| 0 | - | 305 | return 1; | |
| 306 | } | |||
| 307 | __setup("rdinit=", rdinit_setup); | |||
| 308 | ||||
| 309 | extern void setup_arch(char **); | |||
| 310 | ||||
| 311 | #ifndef CONFIG_SMP | |||
| 312 | ||||
| 313 | #ifdef CONFIG_X86_LOCAL_APIC | |||
| 3 | 3 | 314 | static void __init smp_init(void) | |
| 315 | { | |||
| 316 | APIC_init_uniprocessor(); | |||
| 317 | } | |||
| 318 | #else | |||
| 319 | #define smp_init() do { } while (0) | |||
| 320 | #endif | |||
| 321 | ||||
| 3 | 3 | 322 | static inline void setup_per_cpu_areas(void) { } | |
| 3 | 3 | 323 | static inline void smp_prepare_cpus(unsigned int maxcpus) { } | |
| 324 | ||||
| 325 | #else | |||
| 326 | ||||
| 327 | #ifdef __GENERIC_PER_CPU | |||
| 328 | unsigned long __per_cpu_offset[NR_CPUS]; | |||
| 329 | ||||
| 330 | EXPORT_SYMBOL(__per_cpu_offset); | |||
| 331 | ||||
| 332 | static void __init setup_per_cpu_areas(void) | |||
| 333 | { | |||
| 334 | unsigned long size, i; | |||
| 335 | char *ptr; | |||
| 336 | ||||
| 337 | /* Copy section for each CPU (we discard the original) */ | |||
| 338 | size = ALIGN(__per_cpu_end - __per_cpu_start, SMP_CACHE_BYTES); | |||
| 339 | #ifdef CONFIG_MODULES | |||
| 340 | if (size < PERCPU_ENOUGH_ROOM) | |||
| 341 | size = PERCPU_ENOUGH_ROOM; | |||
| 342 | #endif | |||
| 343 | ||||
| 344 | ptr = alloc_bootmem(size * NR_CPUS); | |||
| 345 | ||||
| 346 | for (i = 0; i < NR_CPUS; i++, ptr += size) { | |||
| 347 | __per_cpu_offset[i] = ptr - __per_cpu_start; | |||
| 348 | memcpy(ptr, __per_cpu_start, __per_cpu_end - __per_cpu_start); | |||
| 349 | } | |||
| 350 | } | |||
| 351 | #endif /* !__GENERIC_PER_CPU */ | |||
| 352 | ||||
| 353 | /* Called by boot processor to activate the rest. */ | |||
| 354 | static void __init smp_init(void) | |||
| 355 | { | |||
| 356 | unsigned int i; | |||
| 357 | ||||
| 358 | /* FIXME: This should be done in userspace --RR */ | |||
| 359 | for_each_present_cpu(i) { | |||
| 360 | if (num_online_cpus() >= max_cpus) | |||
| 361 | break; | |||
| 362 | if (!cpu_online(i)) | |||
| 363 | cpu_up(i); | |||
| 364 | } | |||
| 365 | ||||
| 366 | /* Any cleanup work */ | |||
| 367 | printk(KERN_INFO "Brought up %ld CPUs\n", (long)num_online_cpus()); | |||
| 368 | smp_cpus_done(max_cpus); | |||
| 369 | #if 0 | |||
| 370 | /* Get other processors into their bootup holding patterns. */ | |||
| 371 | ||||
| 372 | smp_commence(); | |||
| 373 | #endif | |||
| 374 | } | |||
| 375 | ||||
| 376 | #endif | |||
| 377 | ||||
| 378 | /* | |||
| 379 | * We need to finalize in a non-__init function or else race conditions | |||
| 380 | * between the root thread and the init thread may cause start_kernel to | |||
| 381 | * be reaped by free_initmem before the root thread has proceeded to | |||
| 382 | * cpu_idle. | |||
| 383 | * | |||
| 384 | * gcc-3.4 accidentally inlines this function, so use noinline. | |||
| 385 | */ | |||
| 386 | ||||
| 3 | 0 | 387 | static void noinline rest_init(void) | |
| 388 | __releases(kernel_lock) | |||
| 389 | { | |||
| 390 | kernel_thread(init, NULL, CLONE_FS | CLONE_SIGHAND); | |||
| 391 | numa_default_policy(); | |||
| 392 | unlock_kernel(); | |||
| 0 | 3 | - | 392 | do-while (0) |
| 393 | ||||
| 394 | /* | |||
| 395 | * The boot idle thread must execute schedule() | |||
| 396 | * at least one to get things moving: | |||
| 397 | */ | |||
| 398 | preempt_enable_no_resched(); | |||
| 0 | 3 | - | 398 | do-while (0) |
| 399 | schedule(); | |||
| 400 | preempt_disable(); | |||
| 0 | 3 | - | 400 | do-while (0) |
| 401 | ||||
| 402 | /* Call into cpu_idle with preempt disabled */ | |||
| 403 | cpu_idle(); | |||
| 404 | } | |||
| 405 | ||||
| 406 | /* Check for early params. */ | |||
| 3 | 0 | 407 | static int __init do_early_param(char *param, char *val) | |
| 408 | { | |||
| 409 | struct obs_kernel_param *p; | |||
| 410 | ||||
| 297 | 3 | 411 | for (p = __setup_start; p < __setup_end; p++) { | |
| 0 | 297 | - | 412 | if (p->early && strcmp(param, p->str) == 0) { |
| 0 | - | 412 | T && T | |
| 0 | - | 412 | T && F | |
| 297 | 412 | F && _ | ||
| 0 | 0 | - | 413 | if (p->setup_func(val) != 0) |
| 414 | printk(KERN_WARNING | |||
| 415 | "Malformed early option '%s'\n", param); | |||
| 416 | } | |||
| 417 | } | |||
| 418 | /* We accept everything at this stage. */ | |||
| 3 | 419 | return 0; | ||
| 420 | } | |||
| 421 | ||||
| 422 | /* Arch code calls this early on, or if not, just before other parsing. */ | |||
| 3 | 3 | 423 | void __init parse_early_param(void) | |
| 424 | { | |||
| 425 | static __initdata int done = 0; | |||
| 426 | static __initdata char tmp_cmdline[COMMAND_LINE_SIZE]; | |||
| 427 | ||||
| 0 | 3 | - | 428 | if (done) |
| 0 | - | 429 | return; | |
| 430 | ||||
| 431 | /* All fall through to do_early_param. */ | |||
| 432 | strlcpy(tmp_cmdline, saved_command_line, COMMAND_LINE_SIZE); | |||
| 433 | parse_args("early options", tmp_cmdline, NULL, 0, do_early_param); | |||
| 434 | done = 1; | |||
| 435 | } | |||
| 436 | ||||
| 437 | /* | |||
| 438 | * Activate the first processor. | |||
| 439 | */ | |||
| 440 | ||||
| 3 | 0 | 441 | asmlinkage void __init start_kernel(void) | |
| 442 | { | |||
| 443 | char * command_line; | |||
| 444 | extern struct kernel_param __start___param[], __stop___param[]; | |||
| 445 | /* | |||
| 446 | * Interrupts are still disabled. Do necessary setups, then | |||
| 447 | * enable them | |||
| 448 | */ | |||
| 449 | lock_kernel(); | |||
| 0 | 3 | - | 449 | do-while (0) |
| 450 | page_address_init(); | |||
| 0 | 3 | - | 450 | do-while (0) |
| 451 | printk(KERN_NOTICE); | |||
| 452 | printk(linux_banner); | |||
| 453 | setup_arch(&command_line); | |||
| 454 | setup_per_cpu_areas(); | |||
| 455 | ||||
| 456 | /* | |||
| 457 | * Mark the boot cpu "online" so that it can call console drivers in | |||
| 458 | * printk() and can access its per-cpu storage. | |||
| 459 | */ | |||
| 460 | smp_prepare_boot_cpu(); | |||
| 0 | 3 | - | 460 | do-while (0) |
| 461 | ||||
| 462 | /* | |||
| 463 | * Set up the scheduler prior starting any interrupts (such as the | |||
| 464 | * timer interrupt). Full topology setup happens at smp_init() | |||
| 465 | * time - but meanwhile we still have a functioning scheduler. | |||
| 466 | */ | |||
| 467 | sched_init(); | |||
| 468 | /* | |||
| 469 | * Disable preemption - early bootup scheduling is extremely | |||
| 470 | * fragile until we cpu_idle() for the first time. | |||
| 471 | */ | |||
| 472 | preempt_disable(); | |||
| 0 | 3 | - | 472 | do-while (0) |
| 473 | build_all_zonelists(); | |||
| 474 | page_alloc_init(); | |||
| 475 | printk(KERN_NOTICE "Kernel command line: %s\n", saved_command_line); | |||
| 476 | parse_early_param(); | |||
| 477 | parse_args("Booting kernel", command_line, __start___param, | |||
| 478 | __stop___param - __start___param, | |||
| 479 | &unknown_bootoption); | |||
| 480 | sort_main_extable(); | |||
| 481 | trap_init(); | |||
| 482 | rcu_init(); | |||
| 483 | init_IRQ(); | |||
| 484 | pidhash_init(); | |||
| 485 | init_timers(); | |||
| 486 | hrtimers_init(); | |||
| 487 | softirq_init(); | |||
| 488 | time_init(); | |||
| 489 | ||||
| 490 | /* | |||
| 491 | * HACK ALERT! This is early. We're enabling the console before | |||
| 492 | * we've done PCI setups etc, and console_init() must be aware of | |||
| 493 | * this. But we do want output early, in case something goes wrong. | |||
| 494 | */ | |||
| 495 | console_init(); | |||
| 0 | 3 | - | 496 | if (panic_later) |
| 497 | panic(panic_later, panic_param); | |||
| 498 | profile_init(); | |||
| 499 | local_irq_enable(); | |||
| 500 | #ifdef CONFIG_BLK_DEV_INITRD | |||
| 501 | if (initrd_start && !initrd_below_start_ok && | |||
| 502 | initrd_start < min_low_pfn << PAGE_SHIFT) { | |||
| 503 | printk(KERN_CRIT "initrd overwritten (0x%08lx < 0x%08lx) - " | |||
| 504 | "disabling it.\n",initrd_start,min_low_pfn << PAGE_SHIFT); | |||
| 505 | initrd_start = 0; | |||
| 506 | } | |||
| 507 | #endif | |||
| 508 | vfs_caches_init_early(); | |||
| 509 | cpuset_init_early(); | |||
| 510 | mem_init(); | |||
| 511 | kmem_cache_init(); | |||
| 512 | setup_per_cpu_pageset(); | |||
| 513 | numa_policy_init(); | |||
| 0 | 3 | - | 514 | if (late_time_init) |
| 515 | late_time_init(); | |||
| 516 | calibrate_delay(); | |||
| 517 | pidmap_init(); | |||
| 518 | pgtable_cache_init(); | |||
| 0 | 3 | - | 518 | do-while (0) |
| 519 | prio_tree_init(); | |||
| 520 | anon_vma_init(); | |||
| 521 | #ifdef CONFIG_X86 | |||
| 0 | 3 | - | 522 | if (efi_enabled) |
| 523 | efi_enter_virtual_mode(); | |||
| 524 | #endif | |||
| 525 | fork_init(num_physpages); | |||
| 526 | proc_caches_init(); | |||
| 527 | buffer_init(); | |||
| 528 | unnamed_dev_init(); | |||
| 529 | key_init(); | |||
| 0 | 3 | - | 529 | do-while (0) |
| 530 | security_init(); | |||
| 531 | vfs_caches_init(num_physpages); | |||
| 532 | radix_tree_init(); | |||
| 533 | signals_init(); | |||
| 534 | /* rootfs populating might need page-writeback */ | |||
| 535 | page_writeback_init(); | |||
| 536 | #ifdef CONFIG_PROC_FS | |||
| 537 | proc_root_init(); | |||
| 538 | #endif | |||
| 539 | cpuset_init(); | |||
| 540 | ||||
| 541 | check_bugs(); | |||
| 542 | ||||
| 543 | acpi_early_init(); /* before LAPIC and SMP init */ | |||
| 544 | ||||
| 545 | /* Do the rest non-__init'ed, we're now alive */ | |||
| 546 | rest_init(); | |||
| 547 | } | |||
| 548 | ||||
| 549 | static int __initdata initcall_debug; | |||
| 550 | ||||
| 0 | 0 | - | 551 | static int __init initcall_debug_setup(char *str) |
| 552 | { | |||
| 553 | initcall_debug = 1; | |||
| 0 | - | 554 | return 1; | |
| 555 | } | |||
| 556 | __setup("initcall_debug", initcall_debug_setup); | |||
| 557 | ||||
| 558 | struct task_struct *child_reaper = &init_task; | |||
| 559 | ||||
| 560 | extern initcall_t __initcall_start[], __initcall_end[]; | |||
| 561 | ||||
| 3 | 3 | 562 | static void __init do_initcalls(void) | |
| 563 | { | |||
| 564 | initcall_t *call; | |||
| 565 | int count = preempt_count(); | |||
| 566 | ||||
| 654 | 3 | 567 | for (call = __initcall_start; call < __initcall_end; call++) { | |
| 568 | char *msg; | |||
| 569 | ||||
| 0 | 654 | - | ||