Import of Linux/MIPS 1.3.0

3 files changed, 598 insertions, 301 deletions

diff --git a/init/init.c b/init/init.c
deleted file mode 100644
index f52f7f57d..000000000
--- a/init/init.c
+++ /dev/null
@@ -1,301 +0,0 @@
-/*
- *  linux/init/init.c
- *
- *  Copyright (C) 1991, 1992  Linus Torvalds
- */
-
-#include <stdarg.h>
-
-#include <asm/system.h>
-#include <asm/io.h>
-
-#include <linux/types.h>
-#include <linux/fcntl.h>
-#include <linux/config.h>
-#include <linux/sched.h>
-#include <linux/tty.h>
-#include <linux/head.h>
-#include <linux/unistd.h>
-#include <linux/string.h>
-#include <linux/timer.h>
-#include <linux/fs.h>
-#include <linux/ctype.h>
-#include <linux/ioport.h>
-#include <linux/kernel.h>
-
-extern unsigned long * prof_buffer;
-extern unsigned long prof_len;
-extern char edata, end;
-extern char *linux_banner;
-extern int parse_machine_options(char *line);
-extern int root_mountflags;
-extern int console_loglevel;
-
-extern struct {
-        char *str;
-        void (*setup_func)(char *, int *);
-} *bootsetups;
-
-/*
- * Boot command-line arguments
- */
-void copy_options(char * to, char * from);
-void parse_options(char *line);
-#define MAX_INIT_ARGS 8
-#define MAX_INIT_ENVS 8
-#define COMMAND_LINE ((char *) (PARAM+2048))
-#define COMMAND_LINE_SIZE 256
-
-extern unsigned long memory_start;		/* After mem_init, stores the */
-                                                /* amount of free user memory */
-extern unsigned long memory_end;
-extern unsigned long low_memory_start;
-
-static char term[21];
-int rows, cols;
-
-static char * argv_init[MAX_INIT_ARGS+2] = { "init", NULL, };
-static char * envp_init[MAX_INIT_ENVS+2] = { "HOME=/", term, NULL, };
-
-static char * argv_rc[] = { "/bin/sh", NULL };
-static char * envp_rc[] = { "HOME=/", term, NULL };
-
-static char * argv[] = { "-/bin/sh",NULL };
-static char * envp[] = { "HOME=/usr/root", term, NULL };
-
-/*
- * we need this inline - forking from kernel space will result
- * in NO COPY ON WRITE (!!!), until an execve is executed. This
- * is no problem, but for the stack. This is handled by not letting
- * main() use the stack at all after fork(). Thus, no function
- * calls - which means inline code for fork too, as otherwise we
- * would use the stack upon exit from 'fork()'.
- *
- * Actually only pause and fork are needed inline, so that there
- * won't be any messing with the stack from main(), but we define
- * some others too.
- */
-#define __NR__exit __NR_exit
-static inline _syscall0(int,idle)
-static inline _syscall0(int,fork)
-static inline _syscall0(int,pause)
-static inline _syscall0(int,setup)
-static inline _syscall0(int,sync)
-static inline _syscall0(pid_t,setsid)
-static inline _syscall3(int,write,int,fd,const char *,buf,off_t,count)
-static inline _syscall1(int,dup,int,fd)
-static inline _syscall3(int,execve,const char *,file,char **,argv,char **,envp)
-static inline _syscall3(int,open,const char *,file,int,flag,int,mode)
-static inline _syscall1(int,close,int,fd)
-static inline _syscall1(int,_exit,int,exitcode)
-static inline _syscall3(pid_t,waitpid,pid_t,pid,int *,wait_stat,int,options)
-
-static inline pid_t wait(int * wait_stat)
-{
-	return waitpid(-1,wait_stat,0);
-}
-
-static char printbuf[1024];
-
-char *get_options(char *str, int *ints)
-{
-	char *cur = str;
-	int i=1;
-
-	while (cur && isdigit(*cur) && i <= 10) {
-		ints[i++] = simple_strtoul(cur,NULL,0);
-		if ((cur = strchr(cur,',')) != NULL)
-			cur++;
-	}
-	ints[0] = i-1;
-	return(cur);
-}
-
-static int checksetup(char *line)
-{
-        int i = 0;
-        int ints[11];
-
-        while (bootsetups[i].str) {
-                int n = strlen(bootsetups[i].str);
-                if (!strncmp(line,bootsetups[i].str,n)) {
-                        bootsetups[i].setup_func(get_options(line+n,ints), ints);
-                        return 1;
-                }
-                i++;
-        }
-        return 0;
-}
-
-/*
- * 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 - currently
- * only the "root=XXXX" option is recognized. These options are not given
- * to init - they are for internal kernel use only.
- */
-void parse_options(char *line)
-{
-	char *next;
-	char *devnames[] = { "hda", "hdb", "sda", "sdb", "sdc", "sdd", "sde", "fd", "xda", "xdb", NULL };
-	int devnums[]    = { 0x300, 0x340, 0x800, 0x810, 0x820, 0x830, 0x840, 0x200, 0xD00, 0xD40, 0};
-	int args, envs;
-
-	if (!*line)
-		return;
-	args = 0;
-	envs = 1;	/* TERM is set to 'console' by default */
-	next = line;
-	while ((line = next) != NULL) {
-		if ((next = strchr(line,' ')) != NULL)
-			*next++ = 0;
-		/*
-		 * check for kernel options first..
-		 */
-		if (!strncmp(line,"root=",5)) {
-			int n;
-			line += 5;
-			if (strncmp(line,"/dev/",5)) {
-				ROOT_DEV = simple_strtoul(line,NULL,16);
-				continue;
-			}
-			line += 5;
-			for (n = 0 ; devnames[n] ; n++) {
-				int len = strlen(devnames[n]);
-				if (!strncmp(line,devnames[n],len)) {
-					ROOT_DEV = devnums[n]+simple_strtoul(line+len,NULL,0);
-					break;
-				}
-			}
-			continue;
-		}
-		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 (parse_machine_options(line))
-			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;
-}
-
-void copy_options(char * to, char * from)
-{
-	char c = ' ';
-	int len = 0;
-
-	for (;;) {
-		if (c == ' ' && *(unsigned long *)from == *(unsigned long *)"mem=")
-			memory_end = simple_strtoul(from+4, &from, 0);
-		c = *(from++);
-		if (!c)
-			break;
-		if (COMMAND_LINE_SIZE <= ++len)
-			break;
-		*(to++) = c;
-	}
-	*to = '\0';
-}
-
-static int printf(const char *fmt, ...)
-{
-	va_list args;
-	int i;
-
-	va_start(args, fmt);
-	write(1,printbuf,i=vsprintf(printbuf, fmt, args));
-	va_end(args);
-	return i;
-}
-
-void init(void)
-{
-	int pid,i;
-
-	setup();
-	sprintf(term, "TERM=con%dx%d", ORIG_VIDEO_COLS, ORIG_VIDEO_LINES);
-
-	#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;
-			current->fs->pwd  = pseudo_root;
-		}
-	}
-	#endif
-
-	(void) open("/dev/tty1",O_RDWR,0);
-	(void) dup(0);
-	(void) dup(0);
-
-	execve("/etc/init",argv_init,envp_init);
-	execve("/bin/init",argv_init,envp_init);
-	execve("/sbin/init",argv_init,envp_init);
-	/* if this fails, fall through to original stuff */
-
-	if (!(pid=fork())) {
-		close(0);
-		if (open("/etc/rc",O_RDONLY,0))
-			_exit(1);
-		execve("/bin/sh",argv_rc,envp_rc);
-		_exit(2);
-	}
-	if (pid>0)
-		while (pid != wait(&i))
-			/* nothing */;
-	while (1) {
-		if ((pid = fork()) < 0) {
-			printf("Fork failed in init\n\r");
-			continue;
-		}
-		if (!pid) {
-			close(0);close(1);close(2);
-			setsid();
-			(void) open("/dev/tty1",O_RDWR,0);
-			(void) dup(0);
-			(void) dup(0);
-			_exit(execve("/bin/sh",argv,envp));
-		}
-		while (1)
-			if (pid == wait(&i))
-				break;
-		printf("\n\rchild %d died with code %04x\n\r",pid,i);
-		sync();
-	}
-	_exit(0);
-}
diff --git a/init/main.c b/init/main.c
new file mode 100644
index 000000000..92cc55d5f
--- /dev/null
+++ b/init/main.c
@@ -0,0 +1,578 @@
+/*
+ *  linux/init/main.c
+ *
+ *  Copyright (C) 1991, 1992  Linus Torvalds
+ */
+
+#define __KERNEL_SYSCALLS__
+#include <stdarg.h>
+
+#include <asm/system.h>
+#include <asm/io.h>
+
+#include <linux/types.h>
+#include <linux/fcntl.h>
+#include <linux/config.h>
+#include <linux/sched.h>
+#include <linux/tty.h>
+#include <linux/head.h>
+#include <linux/unistd.h>
+#include <linux/string.h>
+#include <linux/timer.h>
+#include <linux/fs.h>
+#include <linux/ctype.h>
+#include <linux/delay.h>
+#include <linux/utsname.h>
+#include <linux/ioport.h>
+#include <linux/hdreg.h>
+#include <linux/mm.h>
+
+#include <asm/bugs.h>
+
+#ifdef CONFIG_MIPS_JAZZ
+#include <asm/jazz.h>
+#if 1
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#endif
+#endif
+
+extern unsigned long * prof_buffer;
+extern unsigned long prof_len;
+extern char _stext, _etext;
+extern char *linux_banner;
+
+static char printbuf[1024];
+
+extern int console_loglevel;
+
+extern void init(void);
+extern void init_IRQ(void);
+extern void init_modules(void);
+extern long console_init(long, long);
+extern long kmalloc_init(long,long);
+extern long blk_dev_init(long,long);
+extern long chr_dev_init(long,long);
+extern void sock_init(void);
+extern long rd_init(long mem_start, int length);
+unsigned long net_dev_init(unsigned long, unsigned long);
+extern long pci_init(long, long);
+
+extern void bmouse_setup(char *str, int *ints);
+extern void eth_setup(char *str, int *ints);
+extern void xd_setup(char *str, int *ints);
+extern void floppy_setup(char *str, int *ints);
+extern void mcd_setup(char *str, int *ints);
+extern void aztcd_setup(char *str, int *ints);
+extern void st_setup(char *str, int *ints);
+extern void st0x_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 aha152x_setup(char *str, int *ints);
+extern void aha1542_setup(char *str, int *ints);
+extern void aha274x_setup(char *str, int *ints);
+extern void buslogic_setup(char *str, int *ints);
+extern void scsi_luns_setup(char *str, int *ints);
+extern void sound_setup(char *str, int *ints);
+#ifdef CONFIG_SBPCD
+extern void sbpcd_setup(char *str, int *ints);
+#endif CONFIG_SBPCD
+#ifdef CONFIG_CDU31A
+extern void cdu31a_setup(char *str, int *ints);
+#endif CONFIG_CDU31A
+#ifdef CONFIG_CDU535
+extern void sonycd535_setup(char *str, int *ints);
+#endif CONFIG_CDU535
+void ramdisk_setup(char *str, int *ints);
+
+#ifdef CONFIG_SYSVIPC
+extern void ipc_init(void);
+#endif
+#ifdef CONFIG_SCSI
+extern unsigned long scsi_dev_init(unsigned long, unsigned long);
+#endif
+#ifdef CONFIG_MIPS_JAZZ
+#include <asm/jazzdma.h>
+#endif
+#ifdef CONFIG_REMOTE_DEBUG
+#include <asm/gdb-stub.h>
+#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;
+
+static char term[21];
+int rows, cols;
+
+int ramdisk_size;
+int root_mountflags = 0;
+
+static char * argv_init[MAX_INIT_ARGS+2] = { "init", NULL, };
+static char * envp_init[MAX_INIT_ENVS+2] = { "HOME=/", term, NULL, };
+
+static char * argv_rc[] = { "/bin/sh", NULL };
+static char * envp_rc[] = { "HOME=/", term, NULL };
+
+static char * argv[] = { "-/bin/sh",NULL };
+static char * envp[] = { "HOME=/usr/root", term, NULL };
+
+char *get_options(char *str, int *ints)
+{
+	char *cur = str;
+	int i=1;
+
+	while (cur && isdigit(*cur) && i <= 10) {
+		ints[i++] = simple_strtoul(cur,NULL,0);
+		if ((cur = strchr(cur,',')) != NULL)
+			cur++;
+	}
+	ints[0] = i-1;
+	return(cur);
+}
+
+struct {
+	char *str;
+	void (*setup_func)(char *, int *);
+} bootsetups[] = {
+	{ "reserve=", reserve_setup },
+	{ "ramdisk=", ramdisk_setup },
+#ifdef CONFIG_BUGi386
+	{ "no-hlt", no_halt },
+	{ "no387", no_387 },
+#endif
+#ifdef CONFIG_INET
+	{ "ether=", eth_setup },
+#endif
+#ifdef CONFIG_SCSI
+	{ "max_scsi_luns=", scsi_luns_setup },
+#endif
+#ifdef CONFIG_BLK_DEV_IDE
+	{ "hda=", hda_setup },
+	{ "hdb=", hdb_setup },
+	{ "hdc=", hdc_setup },
+	{ "hdd=", hdd_setup },
+	{ "hd=",  ide_setup },
+#elif 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_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 },
+#endif
+#ifdef CONFIG_SCSI_AHA152X
+	{ "aha152x=", aha152x_setup},
+#endif
+#ifdef CONFIG_SCSI_AHA1542
+	{ "aha1542=", aha1542_setup},
+#endif
+#ifdef CONFIG_SCSI_AHA274X
+	{ "aha274x=", aha274x_setup},
+#endif
+#ifdef CONFIG_SCSI_BUSLOGIC
+	{ "buslogic=", buslogic_setup},
+#endif
+#ifdef CONFIG_BLK_DEV_XD
+	{ "xd=", xd_setup },
+#endif
+#ifdef CONFIG_BLK_DEV_FD
+	{ "floppy=", floppy_setup },
+#endif
+#ifdef CONFIG_MCD
+	{ "mcd=", mcd_setup },
+#endif
+#ifdef CONFIG_AZTCD
+	{ "aztcd=", aztcd_setup },
+#endif
+#ifdef CONFIG_CDU535
+	{ "sonycd535=", sonycd535_setup },
+#endif CONFIG_CDU535
+#ifdef CONFIG_SOUND
+	{ "sound=", sound_setup },
+#endif
+#ifdef CONFIG_SBPCD
+	{ "sbpcd=", sbpcd_setup },
+#endif CONFIG_SBPCD
+#ifdef CONFIG_CDU31A
+	{ "cdu31a=", cdu31a_setup },
+#endif CONFIG_CDU31A
+	{ 0, 0 }
+};
+
+void ramdisk_setup(char *str, int *ints)
+{
+   if (ints[0] > 0 && ints[1] >= 0)
+      ramdisk_size = ints[1];
+}
+
+static int checksetup(char *line)
+{
+	int i = 0;
+	int ints[11];
+
+	while (bootsetups[i].str) {
+		int n = strlen(bootsetups[i].str);
+		if (!strncmp(line,bootsetups[i].str,n)) {
+			bootsetups[i].setup_func(get_options(line+n,ints), ints);
+			return 1;
+		}
+		i++;
+	}
+	return 0;
+}
+
+unsigned long loops_per_sec = 1;
+
+static void calibrate_delay(void)
+{
+	int ticks;
+
+	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 >= HZ) {
+			loops_per_sec = muldiv(loops_per_sec, HZ, ticks);
+			printk("ok - %lu.%02lu BogoMips\n",
+				loops_per_sec/500000,
+				(loops_per_sec/5000) % 100);
+			return;
+		}
+	}
+	printk("failed\n");
+}
+
+
+/*
+ * 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 parse_options(char *line)
+{
+	char *next;
+	char *devnames[] = { "hda", "hdb", "hdc", "hdd", "sda", "sdb", "sdc", "sdd", "sde", "fd", "xda", "xdb", NULL };
+	int devnums[]    = { 0x300, 0x340, 0x1600, 0x1640, 0x800, 0x810, 0x820, 0x830, 0x840, 0x200, 0xD00, 0xD40, 0};
+	int args, envs;
+
+	if (!*line)
+		return;
+	args = 0;
+	envs = 1;	/* TERM is set to 'console' by default */
+	next = line;
+	while ((line = next) != NULL) {
+		if ((next = strchr(line,' ')) != NULL)
+			*next++ = 0;
+		/*
+		 * check for kernel options first..
+		 */
+		if (!strncmp(line,"root=",5)) {
+			int n;
+			line += 5;
+			if (strncmp(line,"/dev/",5)) {
+				ROOT_DEV = simple_strtoul(line,NULL,16);
+				continue;
+			}
+			line += 5;
+			for (n = 0 ; devnames[n] ; n++) {
+				int len = strlen(devnames[n]);
+				if (!strncmp(line,devnames[n],len)) {
+					ROOT_DEV = devnums[n]+simple_strtoul(line+len,NULL,0);
+					break;
+				}
+			}
+			continue;
+		}
+		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 (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 check_bugs(void);
+extern void setup_arch(char **, unsigned long *, unsigned long *);
+
+asmlinkage void start_kernel(void)
+{
+	char * command_line;
+/*
+ * Interrupts are still disabled. Do necessary setups, then
+ * enable them
+ */
+	setup_arch(&command_line, &memory_start, &memory_end);
+	memory_start = paging_init(memory_start,memory_end);
+	trap_init();
+	init_IRQ();
+	sched_init();
+	parse_options(command_line);
+	init_modules();
+#ifdef CONFIG_PROFILE
+	prof_buffer = (unsigned long *) memory_start;
+	/* only text is profiled */
+	prof_len = (unsigned long) &_etext - (unsigned long) &_stext;
+	prof_len >>= CONFIG_PROFILE_SHIFT;
+	memory_start += prof_len * sizeof(unsigned long);
+#endif
+	memory_start = console_init(memory_start,memory_end);
+#ifdef CONFIG_REMOTE_DEBUG
+	set_debug_traps();
+/*	breakpoint();	*/	/* execute a BREAK insn */
+#endif	
+#ifdef CONFIG_PCI
+	memory_start = pci_init(memory_start,memory_end);
+#endif
+	memory_start = kmalloc_init(memory_start,memory_end);
+#ifdef CONFIG_MIPS_JAZZ
+	memory_start = vdma_init(memory_start,memory_end);
+#endif
+	sti();
+	calibrate_delay();
+	memory_start = chr_dev_init(memory_start,memory_end);
+	memory_start = blk_dev_init(memory_start,memory_end);
+	sti();
+#ifdef CONFIG_SCSI
+	memory_start = scsi_dev_init(memory_start,memory_end);
+#endif
+#ifdef CONFIG_INET
+	memory_start = net_dev_init(memory_start,memory_end);
+#endif
+	memory_start = inode_init(memory_start,memory_end);
+	memory_start = file_table_init(memory_start,memory_end);
+	memory_start = name_cache_init(memory_start,memory_end);
+	mem_init(memory_start,memory_end);
+	buffer_init();
+#ifndef CONFIG_MIPS_JAZZ
+	/*
+	 * time_init() works well for the Deskstation but fails
+	 * on Acer Pica which uses a completly different design.
+	 * Unfortunately no info yet about the clock...
+	 */
+	time_init();
+#endif
+	sock_init();
+#ifdef CONFIG_SYSVIPC
+	ipc_init();
+#endif
+	sti();
+	check_bugs();
+
+	printk(linux_banner);
+
+#if 0				/* HACKS FOR THE SONIC DRIVER TEST */
+	{
+	  int rc;
+	  struct device *dev;
+	  
+	  printk("opening ETH0\n");
+	  dev = dev_get("eth0");
+	  printk("get_dev returned %p\n",dev);
+	  if (dev)
+	    {
+	      rc = dev_open(dev);
+	      printk("dev_open() returned %d\n",rc);
+	    }
+	}
+#endif
+	
+	if (!fork())		/* we count on this going ok */
+		init();
+
+
+/*
+ * task[0] is meant to be used as an "idle" task: it may not sleep, but
+ * it might do some general things like count free pages or it could be
+ * used to implement a reasonable LRU algorithm for the paging routines:
+ * anything that can be useful, but shouldn't take time from the real
+ * processes.
+ *
+ * Right now task[0] just does a infinite idle loop.
+ */
+	for(;;)
+		idle();
+}
+
+static int printf(const char *fmt, ...)
+{
+	va_list args;
+	int i;
+
+	va_start(args, fmt);
+	write(1,printbuf,i=vsprintf(printbuf, fmt, args));
+	va_end(args);
+	return i;
+}
+
+void init(void)
+{
+	int pid,i;
+
+	setup();
+	sprintf(term, "TERM=con%dx%d", ORIG_VIDEO_COLS, ORIG_VIDEO_LINES);
+
+	#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;
+			current->fs->pwd  = pseudo_root;
+		}
+	}
+	#endif
+
+	(void) open("/dev/tty1",O_RDWR,0);
+	(void) dup(0);
+	(void) dup(0);
+
+#if 0				/* HACKS FOR THE PARALLEL DRIVER TEST */
+	{
+	  int fd;
+	  int rc;
+
+	  fd = open("/dev/lp0",O_WRONLY,0);
+	  printk("open(/dev/lp0,O_WRONLY) returns %d\n",fd);
+	  
+	  for (;;)
+	    rc = write(fd,"Hello World!\n\r",14);
+	}
+#endif
+	
+#if 0				/* HACKS FOR THE SERIAL DRIVER TEST */
+	{
+	  int fd;
+	  int rc;
+	  char c;
+	  
+	  fd = open("/dev/ttyS0",O_RDWR | O_NDELAY,0);
+	  printk("open(/dev/ttyS0,O_RDWR) returns %d\n",fd);
+	  
+	  for (;;) {
+	    rc = write(fd,"Hello World!\n\r",14);
+	    while (sys_read(fd,&c,1) == 1)
+	      printk("%c",c);
+	  }
+	}
+#endif	
+#if 0				/* HACKS FOR THE FLOPPY DRIVER TEST */
+	{
+	  int fd;
+	  int rc;
+	  char c;
+
+	  show_floppy();
+	  printk("Trying to open /dev/fd0...\n");
+	  fd = open("/dev/fd0",O_RDWR,0);
+	  printk("open(/dev/fd0,O_RDWR) returns %d\n",fd);
+
+	  if (fd > 0) {
+	    for (;;) {
+	      while ((rc = sys_read(fd,&c,1)) == 1)
+		printk("%c",c);
+	      printk("read failed with rc=%d\n",rc);
+	    }
+	  } else
+	    for (;;);
+	}
+#endif
+	
+	execve("/etc/init",argv_init,envp_init);
+	execve("/bin/init",argv_init,envp_init);
+	execve("/sbin/init",argv_init,envp_init);
+	/* if this fails, fall through to original stuff */
+
+	if (!(pid=fork())) {
+		close(0);
+		if (open("/etc/rc",O_RDONLY,0))
+			_exit(1);
+		execve("/bin/sh",argv_rc,envp_rc);
+		_exit(2);
+	}
+	if (pid>0)
+		while (pid != wait(&i))
+			/* nothing */;
+	while (1) {
+		if ((pid = fork()) < 0) {
+			printf("Fork failed in init\n\r");
+			continue;
+		}
+		if (!pid) {
+			close(0);close(1);close(2);
+			setsid();
+			(void) open("/dev/tty1",O_RDWR,0);
+			(void) dup(0);
+			(void) dup(0);
+			_exit(execve("/bin/sh",argv,envp));
+		}
+		while (1)
+			if (pid == wait(&i))
+				break;
+		printf("\n\rchild %d died with code %04x\n\r",pid,i);
+		sync();
+	}
+	_exit(0);
+}
diff --git a/init/version.c b/init/version.c
new file mode 100644
index 000000000..42885c427
--- /dev/null
+++ b/init/version.c
@@ -0,0 +1,20 @@
+/*
+ *  linux/version.c
+ *
+ *  Copyright (C) 1992  Theodore Ts'o
+ *
+ *  May be freely distributed as part of Linux.
+ */
+
+#include <linux/config.h>
+#include <linux/utsname.h>
+#include <linux/version.h>
+
+struct new_utsname system_utsname = {
+	UTS_SYSNAME, UTS_NODENAME, UTS_RELEASE, UTS_VERSION,
+	UTS_MACHINE, UTS_DOMAINNAME
+};
+
+char *linux_banner = 
+	"Linux version " UTS_RELEASE " (" LINUX_COMPILE_BY "@"
+	LINUX_COMPILE_HOST ") (" LINUX_COMPILER ") " UTS_VERSION "\n";