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1622 1623 1624 1625 | /* * linux/init/main.c * * Copyright (C) 1991, 1992 Linus Torvalds * * GK 2/5/95 - Changed to support mounting root fs via NFS * Added initrd & change_root: Werner Almesberger & Hans Lermen, Feb '96 * Moan early if gcc is old, avoiding bogus kernels - Paul Gortmaker, May '96 * Simplified starting of init: Michael A. Griffith <grif@acm.org> */ #define __KERNEL_SYSCALLS__ #include <linux/config.h> #include <linux/proc_fs.h> #include <linux/unistd.h> #include <linux/ctype.h> #include <linux/delay.h> #include <linux/utsname.h> #include <linux/ioport.h> #include <linux/init.h> #include <linux/smp_lock.h> #include <linux/blk.h> #include <linux/hdreg.h> #include <asm/io.h> #include <asm/bugs.h> #ifdef CONFIG_PCI #include <linux/pci.h> #endif #ifdef CONFIG_DIO #include <linux/dio.h> #endif #ifdef CONFIG_ZORRO #include <linux/zorro.h> #endif #ifdef CONFIG_MTRR # include <asm/mtrr.h> #endif #ifdef CONFIG_APM #include <linux/apm_bios.h> #endif #ifdef CONFIG_DASD #include <linux/dasd.h> #endif #ifdef CONFIG_BLK_DEV_XPRAM #include "../drivers/s390/block/xpram.h" #endif #ifdef CONFIG_MAC extern void nubus_init(void); #endif /* * Versions of gcc older than that listed below may actually compile * and link okay, but the end product can have subtle run time bugs. * To avoid associated bogus bug reports, we flatly refuse to compile * with a gcc that is known to be too old from the very beginning. */ #if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 6) #error sorry, your GCC is too old. It builds incorrect kernels. #endif extern char _stext, _etext; extern char *linux_banner; extern int console_loglevel; static int init(void *); extern int bdflush(void *); extern int kupdate(void *); extern int kswapd(void *); extern int kpiod(void *); extern void kswapd_setup(void); extern unsigned long init_IRQ( unsigned long); extern void init_modules(void); extern long console_init(long, long); extern void sock_init(void); extern void uidcache_init(void); extern void mca_init(void); extern void sbus_init(void); extern void ppc_init(void); extern void sysctl_init(void); extern void filescache_init(void); extern void signals_init(void); extern void device_setup(void); extern void binfmt_setup(void); extern void free_initmem(void); extern void filesystem_setup(void); #ifdef CONFIG_ARCH_ACORN extern void ecard_init(void); #endif extern void smp_setup(char *str, int *ints); #ifdef __i386__ extern void ioapic_pirq_setup(char *str, int *ints); extern void ioapic_setup(char *str, int *ints); #endif extern void no_scroll(char *str, int *ints); extern void kbd_reset_setup(char *str, int *ints); extern void panic_setup(char *str, int *ints); extern void bmouse_setup(char *str, int *ints); extern void msmouse_setup(char *str, int *ints); extern void console_setup(char *str, int *ints); #ifdef CONFIG_PRINTER extern void lp_setup(char *str, int *ints); #endif #ifdef CONFIG_VIDEO_CPIA_PP extern void cpia_pp_setup(char *str, int *ints); #endif #ifdef CONFIG_JOY_AMIGA extern void js_am_setup(char *str, int *ints); #endif #ifdef CONFIG_JOY_ANALOG extern void js_an_setup(char *str, int *ints); #endif #ifdef CONFIG_JOY_ASSASSIN extern void js_as_setup(char *str, int *ints); #endif #ifdef CONFIG_JOY_CONSOLE extern void js_console_setup(char *str, int *ints); extern void js_console_setup_2(char *str, int *ints); extern void js_console_setup_3(char *str, int *ints); #endif #ifdef CONFIG_JOY_DB9 extern void js_db9_setup(char *str, int *ints); extern void js_db9_setup_2(char *str, int *ints); extern void js_db9_setup_3(char *str, int *ints); #endif #ifdef CONFIG_JOY_TURBOGRAFX extern void js_tg_setup(char *str, int *ints); extern void js_tg_setup_2(char *str, int *ints); extern void js_tg_setup_3(char *str, int *ints); #endif #ifdef CONFIG_JOY_LIGHTNING extern void js_l4_setup(char *str, int *ints); #endif #ifdef CONFIG_JOY_PCI extern void js_pci_setup(char *str, int *ints); #endif extern void eth_setup(char *str, int *ints); #ifdef CONFIG_ARCNET_COM20020 extern void com20020_setup(char *str, int *ints); #endif #ifdef CONFIG_ARCNET_RIM_I extern void arcrimi_setup(char *str, int *ints); #endif #ifdef CONFIG_CTC extern void ctc_setup(char *str, int *ints); #endif #ifdef CONFIG_IUCV extern void iucv_setup(char *str, int *ints); #endif #ifdef CONFIG_ARCNET_COM90xxIO extern void com90io_setup(char *str, int *ints); #endif #ifdef CONFIG_ARCNET_COM90xx extern void com90xx_setup(char *str, int *ints); #endif #ifdef CONFIG_DECNET extern void decnet_setup(char *str, int *ints); #endif #ifdef CONFIG_BLK_DEV_XD extern void xd_setup(char *str, int *ints); extern void xd_manual_geo_init(char *str, int *ints); #endif #ifdef CONFIG_BLK_DEV_IDE extern void ide_setup(char *); #endif #ifdef CONFIG_PARIDE_PD extern void pd_setup(char *str, int *ints); #endif #ifdef CONFIG_PARIDE_PF extern void pf_setup(char *str, int *ints); #endif #ifdef CONFIG_PARIDE_PT extern void pt_setup(char *str, int *ints); #endif #ifdef CONFIG_PARIDE_PG extern void pg_setup(char *str, int *ints); #endif #ifdef CONFIG_PARIDE_PCD extern void pcd_setup(char *str, int *ints); #endif #ifdef CONFIG_3215 extern void con3215_setup(char *str, int *ints); #endif #ifdef CONFIG_MDISK extern void mdisk_setup(char *str, int *ints); #endif #ifdef CONFIG_DASD extern void dasd_setup(char *str, int *ints); #ifdef CONFIG_DASD_MDSK extern void dasd_mdsk_setup(char *str, int *ints); #endif #endif #ifdef CONFIG_BLK_DEV_XPRAM extern void xpram_setup(char *str, int *ints); #endif #ifdef CONFIG_ARCH_S390 extern void vmhalt_setup(char *str, int *ints); extern void vmpoff_setup(char *str, int *ints); #endif extern void floppy_setup(char *str, int *ints); extern void st_setup(char *str, int *ints); extern void st0x_setup(char *str, int *ints); extern void advansys_setup(char *str, int *ints); extern void tmc8xx_setup(char *str, int *ints); extern void t128_setup(char *str, int *ints); extern void pas16_setup(char *str, int *ints); extern void generic_NCR5380_setup(char *str, int *intr); extern void generic_NCR53C400_setup(char *str, int *intr); extern void generic_NCR53C400A_setup(char *str, int *intr); extern void generic_DTC3181E_setup(char *str, int *intr); extern void aha152x_setup(char *str, int *ints); extern void aha1542_setup(char *str, int *ints); extern void gdth_setup(char *str, int *ints); extern void aic7xxx_setup(char *str, int *ints); extern void AM53C974_setup(char *str, int *ints); extern void BusLogic_Setup(char *str, int *ints); extern void ncr53c8xx_setup(char *str, int *ints); extern void sym53c8xx_setup(char *str, int *ints); extern void eata2x_setup(char *str, int *ints); extern void u14_34f_setup(char *str, int *ints); extern void fdomain_setup(char *str, int *ints); extern void ibmmca_scsi_setup(char *str, int *ints); extern void fd_mcs_setup(char *str, int *ints); extern void in2000_setup(char *str, int *ints); extern void NCR53c406a_setup(char *str, int *ints); extern void sym53c416_setup(char *str, int *ints); extern void wd7000_setup(char *str, int *ints); extern void dc390_setup(char* str, int *ints); extern void scsi_luns_setup(char *str, int *ints); extern void scsi_logging_setup(char *str, int *ints); extern void sound_setup(char *str, int *ints); extern void reboot_setup(char *str, int *ints); extern void video_setup(char *str, int *ints); #ifdef CONFIG_CDU31A extern void cdu31a_setup(char *str, int *ints); #endif CONFIG_CDU31A #ifdef CONFIG_BLK_DEV_PS2 extern void ed_setup(char *str, int *ints); extern void tp720_setup(char *str, int *ints); #endif CONFIG_BLK_DEV_PS2 #ifdef CONFIG_MCD extern void mcd_setup(char *str, int *ints); #endif CONFIG_MCD #ifdef CONFIG_MCDX extern void mcdx_setup(char *str, int *ints); #endif CONFIG_MCDX #ifdef CONFIG_SBPCD extern void sbpcd_setup(char *str, int *ints); #endif CONFIG_SBPCD #ifdef CONFIG_AZTCD extern void aztcd_setup(char *str, int *ints); #endif CONFIG_AZTCD #ifdef CONFIG_CDU535 extern void sonycd535_setup(char *str, int *ints); #endif CONFIG_CDU535 #ifdef CONFIG_GSCD extern void gscd_setup(char *str, int *ints); #endif CONFIG_GSCD #ifdef CONFIG_CM206 extern void cm206_setup(char *str, int *ints); #endif CONFIG_CM206 #ifdef CONFIG_OPTCD extern void optcd_setup(char *str, int *ints); #endif CONFIG_OPTCD #ifdef CONFIG_SJCD extern void sjcd_setup(char *str, int *ints); #endif CONFIG_SJCD #ifdef CONFIG_ISP16_CDI extern void isp16_setup(char *str, int *ints); #endif CONFIG_ISP16_CDI #ifdef CONFIG_BLK_DEV_RAM static void ramdisk_start_setup(char *str, int *ints); static void load_ramdisk(char *str, int *ints); static void prompt_ramdisk(char *str, int *ints); static void ramdisk_size(char *str, int *ints); #ifdef CONFIG_BLK_DEV_INITRD static void no_initrd(char *s,int *ints); #endif #endif CONFIG_BLK_DEV_RAM #ifdef CONFIG_ISDN_DRV_ICN extern void icn_setup(char *str, int *ints); #endif #ifdef CONFIG_ISDN_DRV_HISAX extern void HiSax_setup(char *str, int *ints); #endif #ifdef CONFIG_DIGIEPCA extern void epca_setup(char *str, int *ints); #endif #ifdef CONFIG_ISDN_DRV_PCBIT extern void pcbit_setup(char *str, int *ints); #endif #ifdef CONFIG_ATARIMOUSE extern void atari_mouse_setup (char *str, int *ints); #endif #ifdef CONFIG_DMASOUND extern void dmasound_setup (char *str, int *ints); #endif #ifdef CONFIG_ATARI_SCSI extern void atari_scsi_setup (char *str, int *ints); #endif extern void stram_swap_setup (char *str, int *ints); extern void wd33c93_setup (char *str, int *ints); extern void gvp11_setup (char *str, int *ints); extern void ncr53c7xx_setup (char *str, int *ints); extern void sim710_setup (char *str, int *ints); #ifdef CONFIG_MAC_SCSI extern void mac_scsi_setup (char *str, int *ints); #endif #ifdef CONFIG_CYCLADES extern void cy_setup(char *str, int *ints); #endif #ifdef CONFIG_DIGI extern void pcxx_setup(char *str, int *ints); #endif #ifdef CONFIG_RISCOM8 extern void riscom8_setup(char *str, int *ints); #endif extern void n2_setup(char *str, int *ints); extern void c101_setup(char *str, int *ints); #ifdef CONFIG_SPECIALIX extern void specialix_setup(char *str, int *ints); #endif #ifdef CONFIG_DMASCC extern void dmascc_setup(char *str, int *ints); #endif #ifdef CONFIG_BAYCOM_PAR extern void baycom_par_setup(char *str, int *ints); #endif #ifdef CONFIG_BAYCOM_SER_FDX extern void baycom_ser_fdx_setup(char *str, int *ints); #endif #ifdef CONFIG_BAYCOM_SER_HDX extern void baycom_ser_hdx_setup(char *str, int *ints); #endif #ifdef CONFIG_SOUNDMODEM extern void sm_setup(char *str, int *ints); #endif #ifdef CONFIG_ADBMOUSE extern void adb_mouse_setup(char *str, int *ints); #endif #ifdef CONFIG_WDT extern void wdt_setup(char *str, int *ints); #endif #ifdef CONFIG_PARPORT extern void parport_setup(char *str, int *ints); #endif #ifdef CONFIG_PLIP extern void plip_setup(char *str, int *ints); #endif #ifdef CONFIG_HFMODEM extern void hfmodem_setup(char *str, int *ints); #endif #ifdef CONFIG_IP_PNP extern void ip_auto_config_setup(char *str, int *ints); #endif #ifdef CONFIG_ROOT_NFS extern void nfs_root_setup(char *str, int *ints); #endif #ifdef CONFIG_FTAPE extern void ftape_setup(char *str, int *ints); #endif #ifdef CONFIG_3215_CONSOLE extern int con3215_activate(void); #endif #ifdef CONFIG_MDA_CONSOLE extern void mdacon_setup(char *str, int *ints); #endif #ifdef CONFIG_LTPC extern void ltpc_setup(char *str, int *ints); #endif #ifdef CONFIG_BLK_CPQ_DA extern void cpqarray_setup(char *str, int *ints); #endif #if defined(CONFIG_SYSVIPC) extern void ipc_init(void); #endif #if defined(CONFIG_QUOTA) extern void dquot_init_hash(void); #endif #ifdef CONFIG_MD_BOOT extern void md_setup(char *str,int *ints) __init; #endif /* * Boot command-line arguments */ #define MAX_INIT_ARGS 8 #define MAX_INIT_ENVS 8 extern void time_init(void); static unsigned long memory_start = 0; static unsigned long memory_end = 0; int rows, cols; #ifdef CONFIG_BLK_DEV_RAM extern int rd_doload; /* 1 = load ramdisk, 0 = don't load 2 = dual disk */ extern int rd_prompt; /* 1 = prompt for ramdisk, 0 = don't prompt */ extern int rd_size; /* Size of the ramdisk(s) */ extern int rd_image_start; /* starting block # of image */ #ifdef CONFIG_BLK_DEV_INITRD kdev_t real_root_dev; #endif #endif int root_mountflags = MS_RDONLY; char *execute_command = NULL; static char * argv_init[MAX_INIT_ARGS+2] = { "init", NULL, }; static char * envp_init[MAX_INIT_ENVS+2] = { "HOME=/", "TERM=linux", NULL, }; char *get_options(char *str, int *ints) { char *cur = str; int i=1; while (cur && (*cur=='-' || isdigit(*cur)) && i <= 10) { ints[i++] = simple_strtol(cur,NULL,0); if ((cur = strchr(cur,',')) != NULL) cur++; } ints[0] = i-1; return(cur); } static void __init profile_setup(char *str, int *ints) { if (ints[0] > 0) prof_shift = (unsigned long) ints[1]; else prof_shift = 2; } static struct dev_name_struct { const char *name; const int num; } root_dev_names[] __initdata = { #ifdef CONFIG_ROOT_NFS { "nfs", 0x00ff }, #endif #ifdef CONFIG_BLK_DEV_LOOP { "loop", 0x0700 }, #endif #ifdef CONFIG_BLK_DEV_IDE { "hda", 0x0300 }, { "hdb", 0x0340 }, { "hdc", 0x1600 }, { "hdd", 0x1640 }, { "hde", 0x2100 }, { "hdf", 0x2140 }, { "hdg", 0x2200 }, { "hdh", 0x2240 }, { "hdi", 0x3800 }, { "hdj", 0x3840 }, { "hdk", 0x3900 }, { "hdl", 0x3940 }, #endif #ifdef CONFIG_BLK_DEV_SD { "sda", 0x0800 }, { "sdb", 0x0810 }, { "sdc", 0x0820 }, { "sdd", 0x0830 }, { "sde", 0x0840 }, { "sdf", 0x0850 }, { "sdg", 0x0860 }, { "sdh", 0x0870 }, { "sdi", 0x0880 }, { "sdj", 0x0890 }, { "sdk", 0x08a0 }, { "sdl", 0x08b0 }, { "sdm", 0x08c0 }, { "sdn", 0x08d0 }, { "sdo", 0x08e0 }, { "sdp", 0x08f0 }, #endif #ifdef CONFIG_BLK_DEV_DAC960 { "rd/c0d0p",0x3000 }, { "rd/c0d1p",0x3008 }, { "rd/c0d2p",0x3010 }, { "rd/c0d3p",0x3018 }, { "rd/c0d4p",0x3020 }, { "rd/c0d5p",0x3028 }, { "rd/c0d6p",0x3030 }, { "rd/c0d7p",0x3038 }, { "rd/c0d8p",0x3040 }, { "rd/c0d9p",0x3048 }, { "rd/c0d10p",0x3050 }, { "rd/c0d11p",0x3058 }, { "rd/c0d12p",0x3060 }, { "rd/c0d13p",0x3068 }, { "rd/c0d14p",0x3070 }, { "rd/c0d15p",0x3078 }, #endif #if defined(CONFIG_BLK_CPQ_DA) || defined(CONFIG_BLK_CPQ_DA_MODULE) { "ida/c0d0p",0x4800 }, { "ida/c0d1p",0x4810 }, { "ida/c0d2p",0x4820 }, { "ida/c0d3p",0x4830 }, { "ida/c0d4p",0x4840 }, { "ida/c0d5p",0x4850 }, { "ida/c0d6p",0x4860 }, { "ida/c0d7p",0x4870 }, { "ida/c0d8p",0x4880 }, { "ida/c0d9p",0x4890 }, { "ida/c0d10p",0x48A0 }, { "ida/c0d11p",0x48B0 }, { "ida/c0d12p",0x48C0 }, { "ida/c0d13p",0x48D0 }, { "ida/c0d14p",0x48E0 }, { "ida/c0d15p",0x48F0 }, #endif #ifdef CONFIG_ATARI_ACSI { "ada", 0x1c00 }, { "adb", 0x1c10 }, { "adc", 0x1c20 }, { "add", 0x1c30 }, { "ade", 0x1c40 }, #endif #ifdef CONFIG_BLK_DEV_FD { "fd", 0x0200 }, #endif #ifdef CONFIG_MD_BOOT { "md", 0x0900 }, #endif #ifdef CONFIG_BLK_DEV_XD { "xda", 0x0d00 }, { "xdb", 0x0d40 }, #endif #ifdef CONFIG_BLK_DEV_RAM { "ram", 0x0100 }, #endif #ifdef CONFIG_BLK_DEV_SR { "scd", 0x0b00 }, #endif #ifdef CONFIG_MCD { "mcd", 0x1700 }, #endif #ifdef CONFIG_CDU535 { "cdu535", 0x1800 }, { "sonycd", 0x1800 }, #endif #ifdef CONFIG_AZTCD { "aztcd", 0x1d00 }, #endif #ifdef CONFIG_CM206 { "cm206cd", 0x2000 }, #endif #ifdef CONFIG_GSCD { "gscd", 0x1000 }, #endif #ifdef CONFIG_SBPCD { "sbpcd", 0x1900 }, #endif #ifdef CONFIG_BLK_DEV_PS2 { "eda", 0x2400 }, { "edb", 0x2440 }, #endif #ifdef CONFIG_PARIDE_PD { "pda", 0x2d00 }, { "pdb", 0x2d10 }, { "pdc", 0x2d20 }, { "pdd", 0x2d30 }, #endif #ifdef CONFIG_PARIDE_PCD { "pcd", 0x2e00 }, #endif #ifdef CONFIG_PARIDE_PF { "pf", 0x2f00 }, #endif #if CONFIG_APBLOCK { "apblock", APBLOCK_MAJOR << 8}, #endif #if CONFIG_DDV { "ddv", DDV_MAJOR << 8}, #endif #ifdef CONFIG_MDISK { "mnda", (MDISK_MAJOR << MINORBITS)}, { "mndb", (MDISK_MAJOR << MINORBITS) + 1}, { "mndc", (MDISK_MAJOR << MINORBITS) + 2}, { "mndd", (MDISK_MAJOR << MINORBITS) + 3}, { "mnde", (MDISK_MAJOR << MINORBITS) + 4}, { "mndf", (MDISK_MAJOR << MINORBITS) + 5}, { "mndg", (MDISK_MAJOR << MINORBITS) + 6}, { "mndh", (MDISK_MAJOR << MINORBITS) + 7}, #endif #ifdef CONFIG_DASD { "dasda", (DASD_MAJOR << MINORBITS) }, { "dasdb", (DASD_MAJOR << MINORBITS) + (1 << 2) }, { "dasdc", (DASD_MAJOR << MINORBITS) + (2 << 2) }, { "dasdd", (DASD_MAJOR << MINORBITS) + (3 << 2) }, { "dasde", (DASD_MAJOR << MINORBITS) + (4 << 2) }, { "dasdf", (DASD_MAJOR << MINORBITS) + (5 << 2) }, { "dasdg", (DASD_MAJOR << MINORBITS) + (6 << 2) }, { "dasdh", (DASD_MAJOR << MINORBITS) + (7 << 2) }, { "dasdi", (DASD_MAJOR << MINORBITS) + (8 << 2) }, { "dasdj", (DASD_MAJOR << MINORBITS) + (9 << 2) }, { "dasdk", (DASD_MAJOR << MINORBITS) + (11 << 2) }, { "dasdl", (DASD_MAJOR << MINORBITS) + (12 << 2) }, { "dasdm", (DASD_MAJOR << MINORBITS) + (13 << 2) }, { "dasdn", (DASD_MAJOR << MINORBITS) + (14 << 2) }, { "dasdo", (DASD_MAJOR << MINORBITS) + (15 << 2) }, { "dasdp", (DASD_MAJOR << MINORBITS) + (16 << 2) }, { "dasdq", (DASD_MAJOR << MINORBITS) + (17 << 2) }, { "dasdr", (DASD_MAJOR << MINORBITS) + (18 << 2) }, { "dasds", (DASD_MAJOR << MINORBITS) + (19 << 2) }, { "dasdt", (DASD_MAJOR << MINORBITS) + (20 << 2) }, { "dasdu", (DASD_MAJOR << MINORBITS) + (21 << 2) }, { "dasdv", (DASD_MAJOR << MINORBITS) + (22 << 2) }, { "dasdw", (DASD_MAJOR << MINORBITS) + (23 << 2) }, { "dasdx", (DASD_MAJOR << MINORBITS) + (24 << 2) }, { "dasdy", (DASD_MAJOR << MINORBITS) + (25 << 2) }, { "dasdz", (DASD_MAJOR << MINORBITS) + (26 << 2) }, #endif #ifdef CONFIG_BLK_DEV_XPRAM { "xpram0", (XPRAM_MAJOR << MINORBITS) }, { "xpram1", (XPRAM_MAJOR << MINORBITS) + 1 }, { "xpram2", (XPRAM_MAJOR << MINORBITS) + 2 }, { "xpram3", (XPRAM_MAJOR << MINORBITS) + 3 }, { "xpram4", (XPRAM_MAJOR << MINORBITS) + 4 }, { "xpram5", (XPRAM_MAJOR << MINORBITS) + 5 }, { "xpram6", (XPRAM_MAJOR << MINORBITS) + 6 }, { "xpram7", (XPRAM_MAJOR << MINORBITS) + 7 }, { "xpram8", (XPRAM_MAJOR << MINORBITS) + 8 }, { "xpram9", (XPRAM_MAJOR << MINORBITS) + 9 }, { "xpram10", (XPRAM_MAJOR << MINORBITS) + 10 }, { "xpram11", (XPRAM_MAJOR << MINORBITS) + 11 }, { "xpram12", (XPRAM_MAJOR << MINORBITS) + 12 }, { "xpram13", (XPRAM_MAJOR << MINORBITS) + 13 }, { "xpram14", (XPRAM_MAJOR << MINORBITS) + 14 }, { "xpram15", (XPRAM_MAJOR << MINORBITS) + 15 }, { "xpram16", (XPRAM_MAJOR << MINORBITS) + 16 }, { "xpram17", (XPRAM_MAJOR << MINORBITS) + 17 }, { "xpram18", (XPRAM_MAJOR << MINORBITS) + 18 }, { "xpram19", (XPRAM_MAJOR << MINORBITS) + 19 }, { "xpram20", (XPRAM_MAJOR << MINORBITS) + 20 }, { "xpram21", (XPRAM_MAJOR << MINORBITS) + 21 }, { "xpram22", (XPRAM_MAJOR << MINORBITS) + 22 }, { "xpram23", (XPRAM_MAJOR << MINORBITS) + 23 }, { "xpram24", (XPRAM_MAJOR << MINORBITS) + 24 }, { "xpram25", (XPRAM_MAJOR << MINORBITS) + 25 }, { "xpram26", (XPRAM_MAJOR << MINORBITS) + 26 }, { "xpram27", (XPRAM_MAJOR << MINORBITS) + 27 }, { "xpram28", (XPRAM_MAJOR << MINORBITS) + 28 }, { "xpram29", (XPRAM_MAJOR << MINORBITS) + 29 }, { "xpram30", (XPRAM_MAJOR << MINORBITS) + 30 }, { "xpram31", (XPRAM_MAJOR << MINORBITS) + 31 }, #endif { NULL, 0 } }; kdev_t __init name_to_kdev_t(char *line) { int base = 0; if (strncmp(line,"/dev/",5) == 0) { struct dev_name_struct *dev = root_dev_names; line += 5; do { int len = strlen(dev->name); if (strncmp(line,dev->name,len) == 0) { line += len; base = dev->num; break; } dev++; } while (dev->name); } return to_kdev_t(base + simple_strtoul(line,NULL,base?10:16)); } static void __init root_dev_setup(char *line, int *num) { ROOT_DEV = name_to_kdev_t(line); } /* * List of kernel command line parameters. The first table lists parameters * which are subject to values parsing (leading numbers are converted to * an array of ints and chopped off the string), the second table contains * the few exceptions which obey their own syntax rules. */ struct kernel_param { const char *str; void (*setup_func)(char *, int *); }; static struct kernel_param cooked_params[] __initdata = { /* FIXME: make PNP just become reserve_setup */ #ifndef CONFIG_KERNEL_PNP_RESOURCE { "reserve=", reserve_setup }, #else { "reserve=", pnp_reserve_setup }, #endif { "profile=", profile_setup }, #ifdef __SMP__ { "nosmp", smp_setup }, { "maxcpus=", smp_setup }, #ifdef CONFIG_X86_IO_APIC { "noapic", ioapic_setup }, { "pirq=", ioapic_pirq_setup }, #endif #endif #ifdef CONFIG_BLK_DEV_RAM { "ramdisk_start=", ramdisk_start_setup }, { "load_ramdisk=", load_ramdisk }, { "prompt_ramdisk=", prompt_ramdisk }, { "ramdisk=", ramdisk_size }, { "ramdisk_size=", ramdisk_size }, #ifdef CONFIG_BLK_DEV_INITRD { "noinitrd", no_initrd }, #endif #endif #ifdef CONFIG_CTC { "ctc=", ctc_setup } , #endif #ifdef CONFIG_IUCV { "iucv=", iucv_setup } , #endif #ifdef CONFIG_FB { "video=", video_setup }, #endif { "panic=", panic_setup }, { "console=", console_setup }, #ifdef CONFIG_VGA_CONSOLE { "no-scroll", no_scroll }, #endif #ifdef CONFIG_MDA_CONSOLE { "mdacon=", mdacon_setup }, #endif #ifdef CONFIG_VT { "kbd-reset", kbd_reset_setup }, #endif #ifdef CONFIG_BUGi386 { "no-hlt", no_halt }, { "no387", no_387 }, { "reboot=", reboot_setup }, #endif #ifdef CONFIG_MCA { "mca-pentium", mca_pentium }, #endif #ifdef CONFIG_INET { "ether=", eth_setup }, #endif #ifdef CONFIG_ARCNET_COM20020 { "com20020=", com20020_setup }, #endif #ifdef CONFIG_ARCNET_RIM_I { "arcrimi=", arcrimi_setup }, #endif #ifdef CONFIG_ARCNET_COM90xxIO { "com90io=", com90io_setup }, #endif #ifdef CONFIG_ARCNET_COM90xx { "com90xx=", com90xx_setup }, #endif #ifdef CONFIG_DECNET { "decnet=", decnet_setup }, #endif #ifdef CONFIG_PRINTER { "lp=", lp_setup }, #endif #ifdef CONFIG_VIDEO_CPIA_PP { "cpia_pp=", cpia_pp_setup }, #endif #ifdef CONFIG_JOY_AMIGA { "js_am=", js_am_setup }, #endif #ifdef CONFIG_JOY_ANALOG { "js_an=", js_an_setup }, #endif #ifdef CONFIG_JOY_ASSASSIN { "js_as=", js_as_setup }, #endif #ifdef CONFIG_JOY_CONSOLE { "js_console=", js_console_setup }, { "js_console2=", js_console_setup_2 }, { "js_console3=", js_console_setup_3 }, #endif #ifdef CONFIG_JOY_DB9 { "js_db9=", js_db9_setup }, { "js_db9_2=", js_db9_setup_2 }, { "js_db9_3=", js_db9_setup_3 }, #endif #ifdef CONFIG_JOY_TURBOGRAFX { "js_tg=", js_tg_setup }, { "js_tg_2=", js_tg_setup_2 }, { "js_tg_3=", js_tg_setup_3 }, #endif #ifdef CONFIG_JOY_LIGHTNING { "js_l4=", js_l4_setup }, #endif #ifdef CONFIG_JOY_PCI { "js_pci=", js_pci_setup }, #endif #ifdef CONFIG_SCSI { "max_scsi_luns=", scsi_luns_setup }, { "scsi_logging=", scsi_logging_setup }, #endif #ifdef CONFIG_SCSI_ADVANSYS { "advansys=", advansys_setup }, #endif #if defined(CONFIG_BLK_DEV_HD) { "hd=", hd_setup }, #endif #ifdef CONFIG_CHR_DEV_ST { "st=", st_setup }, #endif #ifdef CONFIG_BUSMOUSE { "bmouse=", bmouse_setup }, #endif #ifdef CONFIG_MS_BUSMOUSE { "msmouse=", msmouse_setup }, #endif #ifdef CONFIG_SCSI_SEAGATE { "st0x=", st0x_setup }, { "tmc8xx=", tmc8xx_setup }, #endif #ifdef CONFIG_SCSI_T128 { "t128=", t128_setup }, #endif #ifdef CONFIG_SCSI_PAS16 { "pas16=", pas16_setup }, #endif #ifdef CONFIG_SCSI_GENERIC_NCR5380 { "ncr5380=", generic_NCR5380_setup }, { "ncr53c400=", generic_NCR53C400_setup }, { "ncr53c400a=", generic_NCR53C400A_setup }, { "dtc3181e=", generic_DTC3181E_setup }, #endif #ifdef CONFIG_SCSI_AHA152X { "aha152x=", aha152x_setup}, #endif #ifdef CONFIG_SCSI_AHA1542 { "aha1542=", aha1542_setup}, #endif #ifdef CONFIG_SCSI_GDTH { "gdth=", gdth_setup}, #endif #ifdef CONFIG_SCSI_AIC7XXX { "aic7xxx=", aic7xxx_setup}, #endif #ifdef CONFIG_SCSI_BUSLOGIC { "BusLogic=", BusLogic_Setup}, #endif #ifdef CONFIG_SCSI_NCR53C8XX { "ncr53c8xx=", ncr53c8xx_setup}, #endif #ifdef CONFIG_SCSI_SYM53C8XX { "sym53c8xx=", sym53c8xx_setup}, #endif #ifdef CONFIG_SCSI_EATA { "eata=", eata2x_setup}, #endif #ifdef CONFIG_SCSI_U14_34F { "u14-34f=", u14_34f_setup}, #endif #ifdef CONFIG_SCSI_AM53C974 { "AM53C974=", AM53C974_setup}, #endif #ifdef CONFIG_SCSI_NCR53C406A { "ncr53c406a=", NCR53c406a_setup}, #endif #ifdef CONFIG_SCSI_SYM53C416 { "sym53c416=", sym53c416_setup}, #endif #ifdef CONFIG_SCSI_FUTURE_DOMAIN { "fdomain=", fdomain_setup}, #endif #ifdef CONFIG_SCSI_IN2000 { "in2000=", in2000_setup}, #endif #ifdef CONFIG_SCSI_7000FASST { "wd7000=", wd7000_setup}, #endif #ifdef CONFIG_SCSI_IBMMCA { "ibmmcascsi=", ibmmca_scsi_setup }, #endif #ifdef CONFIG_SCSI_FD_MCS { "fd_mcs=", fd_mcs_setup }, #endif #if defined(CONFIG_SCSI_DC390T) && ! defined(CONFIG_SCSI_DC390T_NOGENSUPP) { "tmscsim=", dc390_setup }, #endif #ifdef CONFIG_BLK_DEV_XD { "xd=", xd_setup }, { "xd_geo=", xd_manual_geo_init }, #endif #if defined(CONFIG_BLK_DEV_FD) || defined(CONFIG_AMIGA_FLOPPY) || defined(CONFIG_ATARI_FLOPPY) { "floppy=", floppy_setup }, #endif #ifdef CONFIG_BLK_DEV_PS2 { "eda=", ed_setup }, { "edb=", ed_setup }, { "tp720=", tp720_setup }, #endif #ifdef CONFIG_CDU31A { "cdu31a=", cdu31a_setup }, #endif CONFIG_CDU31A #ifdef CONFIG_MCD { "mcd=", mcd_setup }, #endif CONFIG_MCD #ifdef CONFIG_MCDX { "mcdx=", mcdx_setup }, #endif CONFIG_MCDX #ifdef CONFIG_SBPCD { "sbpcd=", sbpcd_setup }, #endif CONFIG_SBPCD #ifdef CONFIG_AZTCD { "aztcd=", aztcd_setup }, #endif CONFIG_AZTCD #ifdef CONFIG_CDU535 { "sonycd535=", sonycd535_setup }, #endif CONFIG_CDU535 #ifdef CONFIG_GSCD { "gscd=", gscd_setup }, #endif CONFIG_GSCD #ifdef CONFIG_CM206 { "cm206=", cm206_setup }, #endif CONFIG_CM206 #ifdef CONFIG_OPTCD { "optcd=", optcd_setup }, #endif CONFIG_OPTCD #ifdef CONFIG_SJCD { "sjcd=", sjcd_setup }, #endif CONFIG_SJCD #ifdef CONFIG_ISP16_CDI { "isp16=", isp16_setup }, #endif CONFIG_ISP16_CDI #ifdef CONFIG_SOUND_OSS { "sound=", sound_setup }, #endif #ifdef CONFIG_ISDN_DRV_ICN { "icn=", icn_setup }, #endif #ifdef CONFIG_ISDN_DRV_HISAX { "hisax=", HiSax_setup }, { "HiSax=", HiSax_setup }, #endif #ifdef CONFIG_ISDN_DRV_PCBIT { "pcbit=", pcbit_setup }, #endif #ifdef CONFIG_ATARIMOUSE { "atamouse=", atari_mouse_setup }, #endif #ifdef CONFIG_DMASOUND { "dmasound=", dmasound_setup }, #endif #ifdef CONFIG_ATARI_SCSI { "atascsi=", atari_scsi_setup }, #endif #ifdef CONFIG_STRAM_SWAP { "stram_swap=", stram_swap_setup }, #endif #if defined(CONFIG_A4000T_SCSI) || defined(CONFIG_WARPENGINE_SCSI) \ || defined(CONFIG_A4091_SCSI) || defined(CONFIG_MVME16x_SCSI) \ || defined(CONFIG_BVME6000_SCSI) \ || defined(CONFIG_BLZ603EPLUS_SCSI) { "53c7xx=", ncr53c7xx_setup }, #endif #if defined(CONFIG_SCSI_SIM710) { "sim710=", sim710_setup }, #endif #if defined(CONFIG_A3000_SCSI) || defined(CONFIG_A2091_SCSI) \ || defined(CONFIG_GVP11_SCSI) { "wd33c93=", wd33c93_setup }, #endif #if defined(CONFIG_GVP11_SCSI) { "gvp11=", gvp11_setup }, #endif #ifdef CONFIG_MAC_SCSI { "mac5380=", mac_scsi_setup }, #endif #ifdef CONFIG_CYCLADES { "cyclades=", cy_setup }, #endif #ifdef CONFIG_DIGI { "digi=", pcxx_setup }, #endif #ifdef CONFIG_DIGIEPCA { "digiepca=", epca_setup }, #endif #ifdef CONFIG_RISCOM8 { "riscom8=", riscom8_setup }, #endif #ifdef CONFIG_DMASCC { "dmascc=", dmascc_setup }, #endif #ifdef CONFIG_SPECIALIX { "specialix=", specialix_setup }, #endif #ifdef CONFIG_BAYCOM_PAR { "baycom_par=", baycom_par_setup }, #endif #ifdef CONFIG_BAYCOM_SER_FDX { "baycom_ser_fdx=", baycom_ser_fdx_setup }, #endif #ifdef CONFIG_BAYCOM_SER_HDX { "baycom_ser_hdx=", baycom_ser_hdx_setup }, #endif #ifdef CONFIG_SOUNDMODEM { "soundmodem=", sm_setup }, #endif #ifdef CONFIG_WDT { "wdt=", wdt_setup }, #endif #ifdef CONFIG_PARPORT { "parport=", parport_setup }, #endif #ifdef CONFIG_PLIP { "plip=", plip_setup }, #endif #ifdef CONFIG_HFMODEM { "hfmodem=", hfmodem_setup }, #endif #ifdef CONFIG_FTAPE { "ftape=", ftape_setup}, #endif #ifdef CONFIG_MD_BOOT { "md=", md_setup}, #endif #ifdef CONFIG_ADBMOUSE { "adb_buttons=", adb_mouse_setup }, #endif #ifdef CONFIG_LTPC { "ltpc=", ltpc_setup }, #endif #ifdef CONFIG_BLK_CPQ_DA { "smart2=", cpqarray_setup }, #endif { 0, 0 } }; static struct kernel_param raw_params[] __initdata = { { "root=", root_dev_setup }, #ifdef CONFIG_ROOT_NFS { "nfsroot=", nfs_root_setup }, { "nfsaddrs=", ip_auto_config_setup }, #endif #ifdef CONFIG_IP_PNP { "ip=", ip_auto_config_setup }, #endif #ifdef CONFIG_PCI { "pci=", pci_setup }, #endif #ifdef CONFIG_PARIDE_PD { "pd.", pd_setup }, #endif #ifdef CONFIG_PARIDE_PCD { "pcd.", pcd_setup }, #endif #ifdef CONFIG_PARIDE_PF { "pf.", pf_setup }, #endif #ifdef CONFIG_PARIDE_PT { "pt.", pt_setup }, #endif #ifdef CONFIG_PARIDE_PG { "pg.", pg_setup }, #endif #ifdef CONFIG_APM { "apm=", apm_setup }, #endif #ifdef CONFIG_N2 { "n2=", n2_setup }, #endif #ifdef CONFIG_C101 { "c101=", c101_setup }, #endif #ifdef CONFIG_3215 { "condev=", con3215_setup }, #endif #ifdef CONFIG_MDISK { "mdisk=", mdisk_setup }, #endif #ifdef CONFIG_DASD { "dasd=", dasd_setup }, #ifdef CONFIG_DASD_MDSK { "dasd_force_diag=", dasd_mdsk_setup }, #endif #endif #ifdef CONFIG_BLK_DEV_XPRAM { "xpram_parts=", xpram_setup }, #endif #ifdef CONFIG_ARCH_S390 { "vmhalt=", vmhalt_setup }, { "vmpoff=", vmpoff_setup }, #endif { 0, 0 } }; #ifdef CONFIG_BLK_DEV_RAM static void __init ramdisk_start_setup(char *str, int *ints) { if (ints[0] > 0 && ints[1] >= 0) rd_image_start = ints[1]; } static void __init load_ramdisk(char *str, int *ints) { if (ints[0] > 0 && ints[1] >= 0) rd_doload = ints[1] & 3; } static void __init prompt_ramdisk(char *str, int *ints) { if (ints[0] > 0 && ints[1] >= 0) rd_prompt = ints[1] & 1; } static void __init ramdisk_size(char *str, int *ints) { if (ints[0] > 0 && ints[1] >= 0) rd_size = ints[1]; } #endif static int __init checksetup(char *line) { int i, ints[11]; #ifdef CONFIG_BLK_DEV_IDE /* ide driver needs the basic string, rather than pre-processed values */ if (!strncmp(line,"ide",3) || (!strncmp(line,"hd",2) && line[2] != '=')) { ide_setup(line); return 1; } #endif for (i=0; raw_params[i].str; i++) { int n = strlen(raw_params[i].str); if (!strncmp(line,raw_params[i].str,n)) { raw_params[i].setup_func(line+n, NULL); return 1; } } for (i=0; cooked_params[i].str; i++) { int n = strlen(cooked_params[i].str); if (!strncmp(line,cooked_params[i].str,n)) { cooked_params[i].setup_func(get_options(line+n, ints), ints); return 1; } } return 0; } /* this should be approx 2 Bo*oMips to start (note initial shift), and will still work even if initially too large, it will just take slightly longer */ unsigned long loops_per_sec = (1<<12); /* This is the number of bits of precision for the loops_per_second. Each bit takes on average 1.5/HZ seconds. This (like the original) is a little better than 1% */ #define LPS_PREC 8 void __init calibrate_delay(void) { unsigned long ticks, loopbit; int lps_precision = LPS_PREC; loops_per_sec = (1<<12); printk("Calibrating delay loop... "); while (loops_per_sec <<= 1) { /* wait for "start of" clock tick */ ticks = jiffies; while (ticks == jiffies) /* nothing */; /* Go .. */ ticks = jiffies; __delay(loops_per_sec); ticks = jiffies - ticks; if (ticks) break; } /* Do a binary approximation to get loops_per_second set to equal one clock (up to lps_precision bits) */ loops_per_sec >>= 1; loopbit = loops_per_sec; while ( lps_precision-- && (loopbit >>= 1) ) { loops_per_sec |= loopbit; ticks = jiffies; while (ticks == jiffies); ticks = jiffies; __delay(loops_per_sec); if (jiffies != ticks) /* longer than 1 tick */ loops_per_sec &= ~loopbit; } /* finally, adjust loops per second in terms of seconds instead of clocks */ loops_per_sec *= HZ; /* Round the value and print it */ printk("%lu.%02lu BogoMIPS\n", (loops_per_sec+2500)/500000, ((loops_per_sec+2500)/5000) % 100); } /* * This is a simple kernel command line parsing function: it parses * the command line, and fills in the arguments/environment to init * as appropriate. Any cmd-line option is taken to be an environment * variable if it contains the character '='. * * This routine also checks for options meant for the kernel. * These options are not given to init - they are for internal kernel use only. */ static void __init parse_options(char *line) { char *next; char *quote; int args, envs; if (!*line) return; args = 0; envs = 1; /* TERM is set to 'linux' by default */ next = line; while ((line = next) != NULL) { /* On S/390 we want to be able to pass an options that * contains blanks. For example vmhalt="IPL CMS". * To allow that I added code that prevents blanks in * quotes to be recognized as delimiter. -- Martin */ quote = strchr(line,'"'); next = strchr(line, ' '); while (next != NULL && quote != NULL && quote < next) { /* we found a left quote before the next blank * now we have to find the matching right quote */ next = strchr(quote+1, '"'); if (next != NULL) { quote = strchr(next+1, '"'); next = strchr(next+1, ' '); } } if (next != NULL) *next++ = 0; /* * check for kernel options first.. */ if (!strcmp(line,"ro")) { root_mountflags |= MS_RDONLY; continue; } if (!strcmp(line,"rw")) { root_mountflags &= ~MS_RDONLY; continue; } if (!strcmp(line,"debug")) { console_loglevel = 10; continue; } if (!strncmp(line,"init=",5)) { line += 5; execute_command = line; /* In case LILO is going to boot us with default command line, * it prepends "auto" before the whole cmdline which makes * the shell think it should execute a script with such name. * So we ignore all arguments entered _before_ init=... [MJ] */ args = 0; continue; } if (checksetup(line)) continue; /* * Then check if it's an environment variable or * an option. */ if (strchr(line,'=')) { if (envs >= MAX_INIT_ENVS) break; envp_init[++envs] = line; } else { if (args >= MAX_INIT_ARGS) break; argv_init[++args] = line; } } argv_init[args+1] = NULL; envp_init[envs+1] = NULL; } extern void setup_arch(char **, unsigned long *, unsigned long *); #ifndef __SMP__ /* * Uniprocessor idle thread */ int cpu_idle(void *unused) { for(;;) idle(); } #define smp_init() do { } while (0) #else /* * Multiprocessor idle thread is in arch/... */ extern int cpu_idle(void * unused); /* Called by boot processor to activate the rest. */ static void __init smp_init(void) { /* Get other processors into their bootup holding patterns. */ smp_boot_cpus(); smp_threads_ready=1; smp_commence(); } #endif extern void initialize_secondary(void); /* * Activate the first processor. */ asmlinkage void __init start_kernel(void) { char * command_line; #ifdef __SMP__ static int boot_cpu = 1; /* "current" has been set up, we need to load it now */ if (!boot_cpu) initialize_secondary(); boot_cpu = 0; #endif /* * Interrupts are still disabled. Do necessary setups, then * enable them */ printk(linux_banner); setup_arch(&command_line, &memory_start, &memory_end); memory_start = paging_init(memory_start,memory_end); trap_init(); memory_start = init_IRQ( memory_start ); sched_init(); time_init(); parse_options(command_line); /* * HACK ALERT! This is early. We're enabling the console before * we've done PCI setups etc, and console_init() must be aware of * this. But we do want output early, in case something goes wrong. */ memory_start = console_init(memory_start,memory_end); #ifdef CONFIG_MODULES init_modules(); #endif if (prof_shift) { prof_buffer = (unsigned int *) memory_start; /* only text is profiled */ prof_len = (unsigned long) &_etext - (unsigned long) &_stext; prof_len >>= prof_shift; memory_start += prof_len * sizeof(unsigned int); memset(prof_buffer, 0, prof_len * sizeof(unsigned int)); } memory_start = kmem_cache_init(memory_start, memory_end); sti(); calibrate_delay(); #ifdef CONFIG_BLK_DEV_INITRD if (initrd_start && !initrd_below_start_ok && initrd_start < memory_start) { printk(KERN_CRIT "initrd overwritten (0x%08lx < 0x%08lx) - " "disabling it.\n",initrd_start,memory_start); initrd_start = 0; } #endif mem_init(memory_start,memory_end); kmem_cache_sizes_init(); #ifdef CONFIG_3215_CONSOLE con3215_activate(); #endif #ifdef CONFIG_PROC_FS proc_root_init(); #endif uidcache_init(); filescache_init(); dcache_init(); vma_init(); buffer_init(memory_end-memory_start); page_cache_init(memory_end-memory_start); signals_init(); inode_init(); file_table_init(); #if defined(CONFIG_SYSVIPC) ipc_init(); #endif #if defined(CONFIG_QUOTA) dquot_init_hash(); #endif check_bugs(); printk("POSIX conformance testing by UNIFIX\n"); /* * We count on the initial thread going ok * Like idlers init is an unlocked kernel thread, which will * make syscalls (and thus be locked). */ smp_init(); kernel_thread(init, NULL, CLONE_FS | CLONE_FILES | CLONE_SIGHAND); current->need_resched = 1; cpu_idle(NULL); } #ifdef CONFIG_BLK_DEV_INITRD static int do_linuxrc(void * shell) { static char *argv[] = { "linuxrc", NULL, }; close(0);close(1);close(2); setsid(); (void) open("/dev/console",O_RDWR,0); (void) dup(0); (void) dup(0); return execve(shell, argv, envp_init); } static void __init no_initrd(char *s,int *ints) { mount_initrd = 0; } #endif struct task_struct *child_reaper = &init_task; /* * Ok, the machine is now initialized. None of the devices * have been touched yet, but the CPU subsystem is up and * running, and memory and process management works. * * Now we can finally start doing some real work.. */ static void __init do_basic_setup(void) { #ifdef CONFIG_BLK_DEV_INITRD int real_root_mountflags; #endif /* * Tell the world that we're going to be the grim * reaper of innocent orphaned children. * * We don't want people to have to make incorrect * assumptions about where in the task array this * can be found. */ child_reaper = current; #if defined(CONFIG_MTRR) /* Do this after SMP initialization */ /* * We should probably create some architecture-dependent "fixup after * everything is up" style function where this would belong better * than in init/main.c.. */ mtrr_init(); #endif #ifdef CONFIG_SYSCTL sysctl_init(); #endif /* * Ok, at this point all CPU's should be initialized, so * we can start looking into devices.. */ #ifdef CONFIG_PCI pci_init(); #endif #ifdef CONFIG_SBUS sbus_init(); #endif #if defined(CONFIG_PPC) ppc_init(); #endif #ifdef CONFIG_MCA mca_init(); #endif #ifdef CONFIG_ARCH_ACORN ecard_init(); #endif #ifdef CONFIG_ZORRO zorro_init(); #endif #ifdef CONFIG_DIO dio_init(); #endif #ifdef CONFIG_MAC nubus_init(); #endif /* Networking initialization needs a process context */ sock_init(); /* Launch bdflush from here, instead of the old syscall way. */ kernel_thread(bdflush, NULL, CLONE_FS | CLONE_FILES | CLONE_SIGHAND); kernel_thread(kupdate, NULL, CLONE_FS | CLONE_FILES | CLONE_SIGHAND); /* Start the background pageout daemon. */ kswapd_setup(); kernel_thread(kpiod, NULL, CLONE_FS | CLONE_FILES | CLONE_SIGHAND); kernel_thread(kswapd, NULL, CLONE_FS | CLONE_FILES | CLONE_SIGHAND); #if CONFIG_AP1000 /* Start the async paging daemon. */ { extern int asyncd(void *); kernel_thread(asyncd, NULL, CLONE_FS | CLONE_FILES | CLONE_SIGHAND); } #endif #ifdef CONFIG_BLK_DEV_INITRD real_root_dev = ROOT_DEV; real_root_mountflags = root_mountflags; if (initrd_start && mount_initrd) root_mountflags &= ~MS_RDONLY; else mount_initrd =0; #endif /* Set up devices .. */ device_setup(); #if CONFIG_CHANDEV chandev_init(); #endif /* .. executable formats .. */ binfmt_setup(); /* .. filesystems .. */ filesystem_setup(); #ifdef CONFIG_IRDA irda_device_init(); /* Must be done after protocol initialization */ #endif /* Mount the root filesystem.. */ mount_root(); #ifdef CONFIG_BLK_DEV_INITRD root_mountflags = real_root_mountflags; if (mount_initrd && ROOT_DEV != real_root_dev && MAJOR(ROOT_DEV) == RAMDISK_MAJOR && MINOR(ROOT_DEV) == 0) { int error; int i, pid; pid = kernel_thread(do_linuxrc, "/linuxrc", SIGCHLD); if (pid>0) while (pid != wait(&i)); if (MAJOR(real_root_dev) != RAMDISK_MAJOR || MINOR(real_root_dev) != 0) { error = change_root(real_root_dev,"/initrd"); if (error) printk(KERN_ERR "Change root to /initrd: " "error %d\n",error); } } #endif } static int init(void * unused) { lock_kernel(); do_basic_setup(); /* * Ok, we have completed the initial bootup, and * we're essentially up and running. Get rid of the * initmem segments and start the user-mode stuff.. */ free_initmem(); unlock_kernel(); if (open("/dev/console", O_RDWR, 0) < 0) printk("Warning: unable to open an initial console.\n"); (void) dup(0); (void) dup(0); /* * 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) execve(execute_command,argv_init,envp_init); execve("/sbin/init",argv_init,envp_init); execve("/etc/init",argv_init,envp_init); execve("/bin/init",argv_init,envp_init); execve("/bin/sh",argv_init,envp_init); panic("No init found. Try passing init= option to kernel."); } |