X-Git-Url: http://git.rot13.org/?a=blobdiff_plain;f=init%2Fmain.c;h=1c5f6dce1bd2d062ab780a99b8417d9ceb7813b0;hb=6168a702ab0be181e5e57a0b2d0e7376f7a47f0b;hp=036f97c0c34c80bf26a55079e69dcda8f7f0e37d;hpb=a57bf8a4f23cca2b5be5446649bbe22d1440af5d;p=powerpc.git diff --git a/init/main.c b/init/main.c index 036f97c0c3..1c5f6dce1b 100644 --- a/init/main.c +++ b/init/main.c @@ -40,6 +40,8 @@ #include #include #include +#include +#include #include #include #include @@ -50,9 +52,8 @@ #include #include #include -#include #include -#include +#include #include #include @@ -87,15 +88,12 @@ extern void init_IRQ(void); extern void fork_init(unsigned long); extern void mca_init(void); extern void sbus_init(void); -extern void sysctl_init(void); extern void signals_init(void); extern void pidhash_init(void); extern void pidmap_init(void); extern void prio_tree_init(void); extern void radix_tree_init(void); extern void free_initmem(void); -extern void populate_rootfs(void); -extern void driver_init(void); extern void prepare_namespace(void); #ifdef CONFIG_ACPI extern void acpi_early_init(void); @@ -124,8 +122,12 @@ extern void time_init(void); void (*late_time_init)(void); extern void softirq_init(void); -/* Untouched command line (eg. for /proc) saved by arch-specific code. */ -char saved_command_line[COMMAND_LINE_SIZE]; +/* Untouched command line saved by arch-specific code. */ +char __initdata boot_command_line[COMMAND_LINE_SIZE]; +/* Untouched saved command line (eg. for /proc) */ +char *saved_command_line; +/* Command line for parameter parsing */ +static char *static_command_line; static char *execute_command; static char *ramdisk_execute_command; @@ -398,15 +400,24 @@ static void __init smp_init(void) /* Any cleanup work */ printk(KERN_INFO "Brought up %ld CPUs\n", (long)num_online_cpus()); smp_cpus_done(max_cpus); -#if 0 - /* Get other processors into their bootup holding patterns. */ - - smp_commence(); -#endif } #endif +/* + * We need to store the untouched command line for future reference. + * We also need to store the touched command line since the parameter + * parsing is performed in place, and we should allow a component to + * store reference of name/value for future reference. + */ +static void __init setup_command_line(char *command_line) +{ + saved_command_line = alloc_bootmem(strlen (boot_command_line)+1); + static_command_line = alloc_bootmem(strlen (command_line)+1); + strcpy (saved_command_line, boot_command_line); + strcpy (static_command_line, command_line); +} + /* * We need to finalize in a non-__init function or else race conditions * between the root thread and the init thread may cause start_kernel to @@ -461,7 +472,7 @@ void __init parse_early_param(void) return; /* All fall through to do_early_param. */ - strlcpy(tmp_cmdline, saved_command_line, COMMAND_LINE_SIZE); + strlcpy(tmp_cmdline, boot_command_line, COMMAND_LINE_SIZE); parse_args("early options", tmp_cmdline, NULL, 0, do_early_param); done = 1; } @@ -506,11 +517,13 @@ asmlinkage void __init start_kernel(void) * enable them */ lock_kernel(); + tick_init(); boot_cpu_init(); page_address_init(); printk(KERN_NOTICE); - printk(linux_banner, UTS_RELEASE, UTS_VERSION); + printk(linux_banner); setup_arch(&command_line); + setup_command_line(command_line); unwind_setup(); setup_per_cpu_areas(); smp_prepare_boot_cpu(); /* arch-specific boot-cpu hooks */ @@ -528,11 +541,16 @@ asmlinkage void __init start_kernel(void) preempt_disable(); build_all_zonelists(); page_alloc_init(); - printk(KERN_NOTICE "Kernel command line: %s\n", saved_command_line); + printk(KERN_NOTICE "Kernel command line: %s\n", boot_command_line); parse_early_param(); - parse_args("Booting kernel", command_line, __start___param, + parse_args("Booting kernel", static_command_line, __start___param, __stop___param - __start___param, &unknown_bootoption); + if (!irqs_disabled()) { + printk(KERN_WARNING "start_kernel(): bug: interrupts were " + "enabled *very* early, fixing it\n"); + local_irq_disable(); + } sort_main_extable(); trap_init(); rcu_init(); @@ -685,15 +703,11 @@ static void __init do_basic_setup(void) init_workqueues(); usermodehelper_init(); driver_init(); - -#ifdef CONFIG_SYSCTL - sysctl_init(); -#endif - + init_irq_proc(); do_initcalls(); } -static void do_pre_smp_initcalls(void) +static void __init do_pre_smp_initcalls(void) { extern int spawn_ksoftirqd(void); #ifdef CONFIG_SMP @@ -711,7 +725,49 @@ static void run_init_process(char *init_filename) kernel_execve(init_filename, argv_init, envp_init); } -static int init(void * unused) +/* This is a non __init function. Force it to be noinline otherwise gcc + * makes it inline to init() and it becomes part of init.text section + */ +static int noinline init_post(void) +{ + free_initmem(); + unlock_kernel(); + mark_rodata_ro(); + system_state = SYSTEM_RUNNING; + numa_default_policy(); + + if (sys_open((const char __user *) "/dev/console", O_RDWR, 0) < 0) + printk(KERN_WARNING "Warning: unable to open an initial console.\n"); + + (void) sys_dup(0); + (void) sys_dup(0); + + if (ramdisk_execute_command) { + run_init_process(ramdisk_execute_command); + printk(KERN_WARNING "Failed to execute %s\n", + ramdisk_execute_command); + } + + /* + * We try each of these until one succeeds. + * + * The Bourne shell can be used instead of init if we are + * trying to recover a really broken machine. + */ + if (execute_command) { + run_init_process(execute_command); + printk(KERN_WARNING "Failed to execute %s. Attempting " + "defaults...\n", execute_command); + } + run_init_process("/sbin/init"); + run_init_process("/etc/init"); + run_init_process("/bin/init"); + run_init_process("/bin/sh"); + + panic("No init found. Try passing init= option to kernel."); +} + +static int __init init(void * unused) { lock_kernel(); /* @@ -739,12 +795,6 @@ static int init(void * unused) cpuset_init_smp(); - /* - * Do this before initcalls, because some drivers want to access - * firmware files. - */ - populate_rootfs(); - do_basic_setup(); /* @@ -765,39 +815,6 @@ static int init(void * unused) * we're essentially up and running. Get rid of the * initmem segments and start the user-mode stuff.. */ - free_initmem(); - unlock_kernel(); - mark_rodata_ro(); - system_state = SYSTEM_RUNNING; - numa_default_policy(); - - if (sys_open((const char __user *) "/dev/console", O_RDWR, 0) < 0) - printk(KERN_WARNING "Warning: unable to open an initial console.\n"); - - (void) sys_dup(0); - (void) sys_dup(0); - - if (ramdisk_execute_command) { - run_init_process(ramdisk_execute_command); - printk(KERN_WARNING "Failed to execute %s\n", - ramdisk_execute_command); - } - - /* - * We try each of these until one succeeds. - * - * The Bourne shell can be used instead of init if we are - * trying to recover a really broken machine. - */ - if (execute_command) { - run_init_process(execute_command); - printk(KERN_WARNING "Failed to execute %s. Attempting " - "defaults...\n", execute_command); - } - run_init_process("/sbin/init"); - run_init_process("/etc/init"); - run_init_process("/bin/init"); - run_init_process("/bin/sh"); - - panic("No init found. Try passing init= option to kernel."); + init_post(); + return 0; }