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- /*
- * 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
-
- /*
- * 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 kswapd(void *);
- extern int kpiod(void *);
- extern void kswapd_setup(void);
-
- extern void init_IRQ(void);
- 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 powermac_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_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_ASSASIN
- extern void js_as_setup(char *str, int *ints);
- #endif
- #ifdef CONFIG_JOY_CONSOLE
- extern void js_console_setup(char *str, int *ints);
- #endif
- #ifdef CONFIG_JOY_DB9
- extern void js_db9_setup(char *str, int *ints);
- #endif
- #ifdef CONFIG_JOY_TURBOGRAFX
- extern void js_tg_setup(char *str, int *ints);
- #endif
- #ifdef CONFIG_JOY_LIGHTNING
- extern void js_l4_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_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
- 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 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);
- #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
- #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_MDA_CONSOLE
- extern void mdacon_setup(char *str, int *ints);
- #endif
- #ifdef CONFIG_LTPC
- extern void ltpc_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 */
- 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_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_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
- { 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_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_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_JOY_AMIGA
- { "js_am=", js_am_setup },
- #endif
- #ifdef CONFIG_JOY_ANALOG
- { "js_an=", js_an_setup },
- #endif
- #ifdef CONFIG_JOY_ASSASIN
- { "js_as=", js_as_setup },
- #endif
- #ifdef CONFIG_JOY_CONSOLE
- { "js_console=", js_console_setup },
- { "js_console2=", js_console_setup },
- { "js_console3=", js_console_setup },
- #endif
- #ifdef CONFIG_JOY_DB9
- { "js_db9=", js_db9_setup },
- { "js_db9_2=", js_db9_setup },
- { "js_db9_3=", js_db9_setup },
- #endif
- #ifdef CONFIG_JOY_TURBOGRAFX
- { "js_tg=", js_tg_setup },
- { "js_tg_2=", js_tg_setup },
- { "js_tg_3=", js_tg_setup },
- #endif
- #ifdef CONFIG_SCSI
- { "max_scsi_luns=", scsi_luns_setup },
- { "scsi_logging=", scsi_logging_setup },
- #endif
- #ifdef CONFIG_JOY_LIGHTNING
- { "js_l4=", js_l4_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
- #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)
- { "53c7xx=", ncr53c7xx_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
- { 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
- { 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] & 1;
- }
-
- 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;
- int args, envs;
-
- if (!*line)
- return;
- args = 0;
- envs = 1; /* TERM is set to 'linux' by default */
- next = line;
- while ((line = next) != NULL) {
- if ((next = strchr(line,' ')) != 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();
- init_IRQ();
- 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_PROC_FS
- proc_root_init();
- #endif
- uidcache_init();
- filescache_init();
- dcache_init();
- vma_init();
- buffer_init();
- 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)
- powermac_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
-
- /* 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);
- /* 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();
-
- /* .. filesystems .. */
- filesystem_setup();
-
- /* Mount the root filesystem.. */
- mount_root();
-
- #ifdef CONFIG_UMSDOS_FS
- {
- /*
- When mounting a umsdos fs as root, we detect
- the pseudo_root (/linux) and initialise it here.
- pseudo_root is defined in fs/umsdos/inode.c
- */
- extern struct inode *pseudo_root;
- if (pseudo_root != NULL){
- current->fs->root = pseudo_root->i_sb->s_root;
- current->fs->pwd = pseudo_root->i_sb->s_root;
- }
- }
- #endif
-
- #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.");
- }
-