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1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 | /* * 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 <linux/init.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_DASD #include <asm/dasd.h> #endif #ifdef CONFIG_BLK_DEV_XPRAM #include "../drivers/s390/block/xpram.h" #endif #ifdef CONFIG_MAC extern void nubus_init(void); #endif extern int irda_device_init(void); /* * 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 #ifdef CONFIG_MICROCODE extern int microcode_init(void); #endif extern void no_scroll(char *str, int *ints); extern void kbd_reset_setup(char *str, int *ints); extern void aux_reconnect_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); #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 ips_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 #ifdef CONFIG_AGP extern int agp_init (void); #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 #if defined(CONFIG_PSMOUSE) && defined (CONFIG_VT) { "psaux-reconnect", aux_reconnect_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_IPS { "ips=", ips_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_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 }, #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) { struct new_kernel_param *p; 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; } } /* Now handle new-style __setup parameters */ p = &__setup_start; while (p < &__setup_end) { int n = strlen(p->str); if (!strncmp(line,p->str,n)) { if (p->setup_func(line+n)) return 1; } p++; } 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_jiffy = (1<<12); /* This is the number of bits of precision for the loops_per_jiffy. 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_jiffy = (1<<12); printk("Calibrating delay loop... "); while (loops_per_jiffy <<= 1) { /* wait for "start of" clock tick */ ticks = jiffies; while (ticks == jiffies) /* nothing */; /* Go .. */ ticks = jiffies; __delay(loops_per_jiffy); ticks = jiffies - ticks; if (ticks) break; } /* Do a binary approximation to get loops_per_jiffy set to equal one clock (up to lps_precision bits) */ loops_per_jiffy >>= 1; loopbit = loops_per_jiffy; while ( lps_precision-- && (loopbit >>= 1) ) { loops_per_jiffy |= loopbit; ticks = jiffies; while (ticks == jiffies); ticks = jiffies; __delay(loops_per_jiffy); if (jiffies != ticks) /* longer than 1 tick */ loops_per_jiffy &= ~loopbit; } /* Round the value and print it */ printk("%lu.%02lu BogoMIPS\n", loops_per_jiffy/(500000/HZ), (loops_per_jiffy/(5000/HZ)) % 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); #ifdef CONFIG_ARCH_S390 ccwcache_init(); #endif 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; static void __init do_initcalls(void) { initcall_t *call; call = &__initcall_start; while (call < &__initcall_end) { (*call)(); call++; } } /* * 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 #ifdef CONFIG_AGP agp_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(); /* .. executable formats .. */ binfmt_setup(); /* the functions marked initcall */ do_initcalls(); /* .. filesystems .. */ filesystem_setup(); #ifdef CONFIG_IRDA irda_device_init(); /* Must be done after protocol initialization */ #endif #ifdef CONFIG_MICROCODE microcode_init(); #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."); } |