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Software of the Month Club 2000 October
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Software of the Month - Ultimate Collection Shareware 277.iso
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WINLINUX
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DATA1.CAB
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programs_-_kernel_source
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INIT
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MAIN.C
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1999-09-17
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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.");
}