Bare uClinux-2.4.20-uc1 CVS pull

3 files changed, 1667 insertions, 0 deletions

diff --git a/uClinux-2.4.20-uc1/init/do_mounts.c b/uClinux-2.4.20-uc1/init/do_mounts.c
new file mode 100644
index 0000000..29d73fb
--- /dev/null
+++ b/uClinux-2.4.20-uc1/init/do_mounts.c
@@ -0,0 +1,1058 @@
+#define __KERNEL_SYSCALLS__
+#include <linux/config.h>
+#include <linux/slab.h>
+#include <linux/devfs_fs_kernel.h>
+#include <linux/unistd.h>
+#include <linux/ctype.h>
+#include <linux/blk.h>
+#include <linux/fd.h>
+#include <linux/tty.h>
+#include <linux/init.h>
+
+#include <linux/nfs_fs.h>
+#include <linux/nfs_fs_sb.h>
+#include <linux/nfs_mount.h>
+#include <linux/minix_fs.h>
+#include <linux/ext2_fs.h>
+#include <linux/romfs_fs.h>
+#ifdef CONFIG_CRAMFS
+#include <linux/cramfs_fs.h>
+#endif
+
+#define BUILD_CRAMDISK
+
+extern int get_filesystem_list(char * buf);
+
+extern asmlinkage long sys_mount(char *dev_name, char *dir_name, char *type,
+	 unsigned long flags, void *data);
+extern asmlinkage long sys_mkdir(const char *name, int mode);
+extern asmlinkage long sys_chdir(const char *name);
+extern asmlinkage long sys_fchdir(int fd);
+extern asmlinkage long sys_chroot(const char *name);
+extern asmlinkage long sys_unlink(const char *name);
+extern asmlinkage long sys_symlink(const char *old, const char *new);
+extern asmlinkage long sys_mknod(const char *name, int mode, dev_t dev);
+extern asmlinkage long sys_umount(char *name, int flags);
+extern asmlinkage long sys_ioctl(int fd, int cmd, unsigned long arg);
+
+#ifdef CONFIG_BLK_DEV_INITRD
+unsigned int real_root_dev;	/* do_proc_dointvec cannot handle kdev_t */
+static int __initdata mount_initrd = 1;
+
+static int __init no_initrd(char *str)
+{
+	mount_initrd = 0;
+	return 1;
+}
+
+__setup("noinitrd", no_initrd);
+#else
+static int __initdata mount_initrd = 0;
+#endif
+
+int __initdata rd_doload;	/* 1 = load RAM disk, 0 = don't load */
+
+int root_mountflags = MS_RDONLY | MS_VERBOSE;
+static char root_device_name[64];
+
+/* this is initialized in init/main.c */
+kdev_t ROOT_DEV;
+
+static int do_devfs = 0;
+
+static int __init load_ramdisk(char *str)
+{
+	rd_doload = simple_strtol(str,NULL,0) & 3;
+	return 1;
+}
+__setup("load_ramdisk=", load_ramdisk);
+
+static int __init readonly(char *str)
+{
+	if (*str)
+		return 0;
+	root_mountflags |= MS_RDONLY;
+	return 1;
+}
+
+static int __init readwrite(char *str)
+{
+	if (*str)
+		return 0;
+	root_mountflags &= ~MS_RDONLY;
+	return 1;
+}
+
+__setup("ro", readonly);
+__setup("rw", readwrite);
+
+static struct dev_name_struct {
+	const char *name;
+	const int num;
+} root_dev_names[] __initdata = {
+	{ "nfs",     0x00ff },
+	{ "hda",     0x0300 },
+	{ "hdb",     0x0340 },
+	{ "loop",    0x0700 },
+	{ "hdc",     0x1600 },
+	{ "hdd",     0x1640 },
+	{ "hde",     0x2100 },
+	{ "hdf",     0x2140 },
+	{ "hdg",     0x2200 },
+	{ "hdh",     0x2240 },
+	{ "hdi",     0x3800 },
+	{ "hdj",     0x3840 },
+	{ "hdk",     0x3900 },
+	{ "hdl",     0x3940 },
+	{ "hdm",     0x5800 },
+	{ "hdn",     0x5840 },
+	{ "hdo",     0x5900 },
+	{ "hdp",     0x5940 },
+	{ "hdq",     0x5A00 },
+	{ "hdr",     0x5A40 },
+	{ "hds",     0x5B00 },
+	{ "hdt",     0x5B40 },
+	{ "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 },
+	{ "ada",     0x1c00 },
+	{ "adb",     0x1c10 },
+	{ "adc",     0x1c20 },
+	{ "add",     0x1c30 },
+	{ "ade",     0x1c40 },
+	{ "fd",      0x0200 },
+	{ "md",      0x0900 },	     
+	{ "xda",     0x0d00 },
+	{ "xdb",     0x0d40 },
+	{ "ram",     0x0100 },
+	{ "scd",     0x0b00 },
+	{ "mcd",     0x1700 },
+	{ "cdu535",  0x1800 },
+	{ "sonycd",  0x1800 },
+	{ "aztcd",   0x1d00 },
+	{ "cm206cd", 0x2000 },
+	{ "gscd",    0x1000 },
+	{ "sbpcd",   0x1900 },
+	{ "eda",     0x2400 },
+	{ "edb",     0x2440 },
+	{ "pda",	0x2d00 },
+	{ "pdb",	0x2d10 },
+	{ "pdc",	0x2d20 },
+	{ "pdd",	0x2d30 },
+	{ "pcd",	0x2e00 },
+	{ "pf",		0x2f00 },
+	{ "apblock", APBLOCK_MAJOR << 8},
+	{ "ddv", DDV_MAJOR << 8},
+	{ "jsfd",    JSFD_MAJOR << 8},
+#if defined(CONFIG_ARCH_S390)
+	{ "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) },
+#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 },
+	{ "ida/c1d0p",0x4900 },
+	{ "ida/c2d0p",0x4A00 },
+	{ "ida/c3d0p",0x4B00 },
+	{ "ida/c4d0p",0x4C00 },
+	{ "ida/c5d0p",0x4D00 },
+	{ "ida/c6d0p",0x4E00 },
+	{ "ida/c7d0p",0x4F00 }, 
+#endif
+#if defined(CONFIG_BLK_CPQ_CISS_DA) || defined(CONFIG_BLK_CPQ_CISS_DA_MODULE)
+	{ "cciss/c0d0p",0x6800 },
+	{ "cciss/c0d1p",0x6810 },
+	{ "cciss/c0d2p",0x6820 },
+	{ "cciss/c0d3p",0x6830 },
+	{ "cciss/c0d4p",0x6840 },
+	{ "cciss/c0d5p",0x6850 },
+	{ "cciss/c0d6p",0x6860 },
+	{ "cciss/c0d7p",0x6870 },
+	{ "cciss/c0d8p",0x6880 },
+	{ "cciss/c0d9p",0x6890 },
+	{ "cciss/c0d10p",0x68A0 },
+	{ "cciss/c0d11p",0x68B0 },
+	{ "cciss/c0d12p",0x68C0 },
+	{ "cciss/c0d13p",0x68D0 },
+	{ "cciss/c0d14p",0x68E0 },
+	{ "cciss/c0d15p",0x68F0 },
+	{ "cciss/c1d0p",0x6900 },
+	{ "cciss/c2d0p",0x6A00 },
+	{ "cciss/c3d0p",0x6B00 },
+	{ "cciss/c4d0p",0x6C00 },
+	{ "cciss/c5d0p",0x6D00 },
+	{ "cciss/c6d0p",0x6E00 },
+	{ "cciss/c7d0p",0x6F00 },
+#endif
+	{ "ataraid/d0p",0x7200 },
+	{ "ataraid/d1p",0x7210 },
+	{ "ataraid/d2p",0x7220 },
+	{ "ataraid/d3p",0x7230 },
+	{ "ataraid/d4p",0x7240 },
+	{ "ataraid/d5p",0x7250 },
+	{ "ataraid/d6p",0x7260 },
+	{ "ataraid/d7p",0x7270 },
+	{ "ataraid/d8p",0x7280 },
+	{ "ataraid/d9p",0x7290 },
+	{ "ataraid/d10p",0x72A0 },
+	{ "ataraid/d11p",0x72B0 },
+	{ "ataraid/d12p",0x72C0 },
+	{ "ataraid/d13p",0x72D0 },
+	{ "ataraid/d14p",0x72E0 },
+	{ "ataraid/d15p",0x72F0 },
+	{ "nftla", 0x5d00 },
+	{ "nftlb", 0x5d10 },
+	{ "nftlc", 0x5d20 },
+	{ "nftld", 0x5d30 },
+	{ "ftla", 0x2c00 },
+	{ "ftlb", 0x2c08 },
+	{ "ftlc", 0x2c10 },
+	{ "ftld", 0x2c18 },
+	{ "mtdblock", 0x1f00 },
+	{ NULL, 0 }
+};
+
+kdev_t __init name_to_kdev_t(char *line)
+{
+	int base = 0, offs;
+	char *end;
+
+	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);
+	}
+	offs = simple_strtoul(line, &end, base?10:16);
+	if (*end)
+		offs = 0;
+	return to_kdev_t(base + offs);
+}
+
+static int __init root_dev_setup(char *line)
+{
+	int i;
+	char ch;
+
+	ROOT_DEV = name_to_kdev_t(line);
+	memset (root_device_name, 0, sizeof root_device_name);
+	if (strncmp (line, "/dev/", 5) == 0) line += 5;
+	for (i = 0; i < sizeof root_device_name - 1; ++i)
+	{
+	    ch = line[i];
+	    if ( isspace (ch) || (ch == ',') || (ch == '\0') ) break;
+	    root_device_name[i] = ch;
+	}
+	return 1;
+}
+
+__setup("root=", root_dev_setup);
+
+static char * __initdata root_mount_data;
+static int __init root_data_setup(char *str)
+{
+	root_mount_data = str;
+	return 1;
+}
+
+static char * __initdata root_fs_names;
+static int __init fs_names_setup(char *str)
+{
+	root_fs_names = str;
+	return 1;
+}
+
+__setup("rootflags=", root_data_setup);
+__setup("rootfstype=", fs_names_setup);
+
+static void __init get_fs_names(char *page)
+{
+	char *s = page;
+
+	if (root_fs_names) {
+		strcpy(page, root_fs_names);
+		while (*s++) {
+			if (s[-1] == ',')
+				s[-1] = '\0';
+		}
+	} else {
+		int len = get_filesystem_list(page);
+		char *p, *next;
+
+		page[len] = '\0';
+		for (p = page-1; p; p = next) {
+			next = strchr(++p, '\n');
+			if (*p++ != '\t')
+				continue;
+			while ((*s++ = *p++) != '\n')
+				;
+			s[-1] = '\0';
+		}
+	}
+	*s = '\0';
+}
+static void __init mount_block_root(char *name, int flags)
+{
+	char *fs_names = __getname();
+	char *p;
+
+	get_fs_names(fs_names);
+retry:
+	for (p = fs_names; *p; p += strlen(p)+1) {
+		int err = sys_mount(name, "/root", p, flags, root_mount_data);
+		switch (err) {
+			case 0:
+				goto out;
+			case -EACCES:
+				flags |= MS_RDONLY;
+				goto retry;
+			case -EINVAL:
+				continue;
+		}
+	        /*
+		 * Allow the user to distinguish between failed open
+		 * and bad superblock on root device.
+		 */
+		printk ("VFS: Cannot open root device \"%s\" or %s\n",
+			root_device_name, kdevname (ROOT_DEV));
+		printk ("Please append a correct \"root=\" boot option\n");
+		panic("VFS: Unable to mount root fs on %s",
+			kdevname(ROOT_DEV));
+	}
+	panic("VFS: Unable to mount root fs on %s", kdevname(ROOT_DEV));
+out:
+	putname(fs_names);
+	sys_chdir("/root");
+	ROOT_DEV = current->fs->pwdmnt->mnt_sb->s_dev;
+	printk("VFS: Mounted root (%s filesystem)%s.\n",
+		current->fs->pwdmnt->mnt_sb->s_type->name,
+		(current->fs->pwdmnt->mnt_sb->s_flags & MS_RDONLY) ? " readonly" : "");
+}
+ 
+#ifdef CONFIG_ROOT_NFS
+static int __init mount_nfs_root(void)
+{
+	void *data = nfs_root_data();
+
+	if (data && sys_mount("/dev/root","/root","nfs",root_mountflags,data) == 0)
+		return 1;
+	return 0;
+}
+#endif
+
+static int __init create_dev(char *name, kdev_t dev, char *devfs_name)
+{
+	void *handle;
+	char path[64];
+	int n;
+
+	sys_unlink(name);
+	if (!do_devfs)
+		return sys_mknod(name, S_IFBLK|0600, kdev_t_to_nr(dev));
+
+	handle = devfs_find_handle(NULL, dev ? NULL : devfs_name,
+				MAJOR(dev), MINOR(dev), DEVFS_SPECIAL_BLK, 1);
+	if (!handle)
+		return -1;
+	n = devfs_generate_path(handle, path + 5, sizeof (path) - 5);
+	if (n < 0)
+		return -1;
+	return sys_symlink(path + n + 5, name);
+}
+
+#if defined(CONFIG_BLK_DEV_RAM) || defined(CONFIG_BLK_DEV_FD)
+static void __init change_floppy(char *fmt, ...)
+{
+	struct termios termios;
+	char buf[80];
+	char c;
+	int fd;
+	va_list args;
+	va_start(args, fmt);
+	vsprintf(buf, fmt, args);
+	va_end(args);
+	fd = open("/dev/root", O_RDWR | O_NDELAY, 0);
+	if (fd >= 0) {
+		sys_ioctl(fd, FDEJECT, 0);
+		close(fd);
+	}
+	printk(KERN_NOTICE "VFS: Insert %s and press ENTER\n", buf);
+	fd = open("/dev/console", O_RDWR, 0);
+	if (fd >= 0) {
+		sys_ioctl(fd, TCGETS, (long)&termios);
+		termios.c_lflag &= ~ICANON;
+		sys_ioctl(fd, TCSETSF, (long)&termios);
+		read(fd, &c, 1);
+		termios.c_lflag |= ICANON;
+		sys_ioctl(fd, TCSETSF, (long)&termios);
+		close(fd);
+	}
+}
+#endif
+
+#ifdef CONFIG_BLK_DEV_RAM
+
+int __initdata rd_prompt = 1;	/* 1 = prompt for RAM disk, 0 = don't prompt */
+
+static int __init prompt_ramdisk(char *str)
+{
+	rd_prompt = simple_strtol(str,NULL,0) & 1;
+	return 1;
+}
+__setup("prompt_ramdisk=", prompt_ramdisk);
+
+int __initdata rd_image_start;		/* starting block # of image */
+
+static int __init ramdisk_start_setup(char *str)
+{
+	rd_image_start = simple_strtol(str,NULL,0);
+	return 1;
+}
+__setup("ramdisk_start=", ramdisk_start_setup);
+
+static int __init crd_load(int in_fd, int out_fd);
+
+/*
+ * This routine tries to find a RAM disk image to load, and returns the
+ * number of blocks to read for a non-compressed image, 0 if the image
+ * is a compressed image, and -1 if an image with the right magic
+ * numbers could not be found.
+ *
+ * We currently check for the following magic numbers:
+ * 	minix
+ * 	ext2
+ *	romfs
+ * 	gzip
+ */
+static int __init 
+identify_ramdisk_image(int fd, int start_block)
+{
+	const int size = 512;
+	struct minix_super_block *minixsb;
+	struct ext2_super_block *ext2sb;
+	struct romfs_super_block *romfsb;
+#ifdef CONFIG_CRAMFS
+	struct cramfs_super *cramfsb;
+#endif
+	int nblocks = -1;
+	unsigned char *buf;
+
+	buf = kmalloc(size, GFP_KERNEL);
+	if (buf == 0)
+		return -1;
+
+	minixsb = (struct minix_super_block *) buf;
+	ext2sb = (struct ext2_super_block *) buf;
+	romfsb = (struct romfs_super_block *) buf;
+#ifdef CONFIG_CRAMFS
+	cramfsb = (struct cramfs_super *) buf;
+#endif
+	memset(buf, 0xe5, size);
+
+	/*
+	 * Read block 0 to test for gzipped kernel
+	 */
+	lseek(fd, start_block * BLOCK_SIZE, 0);
+	read(fd, buf, size);
+
+	/*
+	 * If it matches the gzip magic numbers, return -1
+	 */
+	if (buf[0] == 037 && ((buf[1] == 0213) || (buf[1] == 0236))) {
+		printk(KERN_NOTICE
+		       "RAMDISK: Compressed image found at block %d\n",
+		       start_block);
+		nblocks = 0;
+		goto done;
+	}
+
+	/* romfs is at block zero too */
+	if (romfsb->word0 == ROMSB_WORD0 &&
+	    romfsb->word1 == ROMSB_WORD1) {
+		printk(KERN_NOTICE
+		       "RAMDISK: romfs filesystem found at block %d\n",
+		       start_block);
+		nblocks = (ntohl(romfsb->size)+BLOCK_SIZE-1)>>BLOCK_SIZE_BITS;
+		goto done;
+	}
+
+#ifdef CONFIG_CRAMFS
+	/* cramfs is at block zero too */
+	if (cramfsb->magic == CRAMFS_MAGIC) {
+		printk(KERN_NOTICE
+		       "RAMDISK: cramfs filesystem found at block %d\n", start_block);
+		nblocks = (cramfsb->size + BLOCK_SIZE - 1) >> BLOCK_SIZE_BITS;
+		goto done;
+	}
+#endif
+
+	/*
+	 * Read block 1 to test for minix and ext2 superblock
+	 */
+	lseek(fd, (start_block+1) * BLOCK_SIZE, 0);
+	read(fd, buf, size);
+
+	/* Try minix */
+	if (minixsb->s_magic == MINIX_SUPER_MAGIC ||
+	    minixsb->s_magic == MINIX_SUPER_MAGIC2) {
+		printk(KERN_NOTICE
+		       "RAMDISK: Minix filesystem found at block %d\n",
+		       start_block);
+		nblocks = minixsb->s_nzones << minixsb->s_log_zone_size;
+		goto done;
+	}
+
+	/* Try ext2 */
+	if (ext2sb->s_magic == cpu_to_le16(EXT2_SUPER_MAGIC)) {
+		printk(KERN_NOTICE
+		       "RAMDISK: ext2 filesystem found at block %d\n",
+		       start_block);
+		nblocks = le32_to_cpu(ext2sb->s_blocks_count);
+		goto done;
+	}
+
+	printk(KERN_NOTICE
+	       "RAMDISK: Couldn't find valid RAM disk image starting at %d.\n",
+	       start_block);
+	
+done:
+	lseek(fd, start_block * BLOCK_SIZE, 0);
+	kfree(buf);
+	return nblocks;
+}
+#endif
+
+static int __init rd_load_image(char *from)
+{
+	int res = 0;
+
+#ifdef CONFIG_BLK_DEV_RAM
+	int in_fd, out_fd;
+	unsigned long rd_blocks, devblocks;
+	int nblocks, i;
+	char *buf;
+	unsigned short rotate = 0;
+#if !defined(CONFIG_ARCH_S390) && !defined(CONFIG_PPC_ISERIES)
+	char rotator[4] = { '|' , '/' , '-' , '\\' };
+#endif
+
+	out_fd = open("/dev/ram", O_RDWR, 0);
+	if (out_fd < 0)
+		goto out;
+
+	in_fd = open(from, O_RDONLY, 0);
+	if (in_fd < 0)
+		goto noclose_input;
+
+	nblocks = identify_ramdisk_image(in_fd, rd_image_start);
+	if (nblocks < 0)
+		goto done;
+
+	if (nblocks == 0) {
+#ifdef BUILD_CRAMDISK
+		if (crd_load(in_fd, out_fd) == 0)
+			goto successful_load;
+#else
+		printk(KERN_NOTICE
+		       "RAMDISK: Kernel does not support compressed "
+		       "RAM disk images\n");
+#endif
+		goto done;
+	}
+
+	/*
+	 * NOTE NOTE: nblocks suppose that the blocksize is BLOCK_SIZE, so
+	 * rd_load_image will work only with filesystem BLOCK_SIZE wide!
+	 * So make sure to use 1k blocksize while generating ext2fs
+	 * ramdisk-images.
+	 */
+	if (sys_ioctl(out_fd, BLKGETSIZE, (unsigned long)&rd_blocks) < 0)
+		rd_blocks = 0;
+	else
+		rd_blocks >>= 1;
+
+	if (nblocks > rd_blocks) {
+		printk("RAMDISK: image too big! (%d/%d blocks)\n",
+		       nblocks, rd_blocks);
+		goto done;
+	}
+		
+	/*
+	 * OK, time to copy in the data
+	 */
+	buf = kmalloc(BLOCK_SIZE, GFP_KERNEL);
+	if (buf == 0) {
+		printk(KERN_ERR "RAMDISK: could not allocate buffer\n");
+		goto done;
+	}
+
+	if (sys_ioctl(in_fd, BLKGETSIZE, (unsigned long)&devblocks) < 0)
+		devblocks = 0;
+	else
+		devblocks >>= 1;
+
+	if (strcmp(from, "/dev/initrd") == 0)
+		devblocks = nblocks;
+
+	if (devblocks == 0) {
+		printk(KERN_ERR "RAMDISK: could not determine device size\n");
+		goto done;
+	}
+
+	printk(KERN_NOTICE "RAMDISK: Loading %d blocks [%d disk%s] into ram disk... ", 
+		nblocks, ((nblocks-1)/devblocks)+1, nblocks>devblocks ? "s" : "");
+	for (i=0; i < nblocks; i++) {
+		if (i && (i % devblocks == 0)) {
+			printk("done disk #%d.\n", i/devblocks);
+			rotate = 0;
+			if (close(in_fd)) {
+				printk("Error closing the disk.\n");
+				goto noclose_input;
+			}
+			change_floppy("disk #%d", i/devblocks+1);
+			in_fd = open(from, O_RDONLY, 0);
+			if (in_fd < 0)  {
+				printk("Error opening disk.\n");
+				goto noclose_input;
+			}
+			printk("Loading disk #%d... ", i/devblocks+1);
+		}
+		read(in_fd, buf, BLOCK_SIZE);
+		write(out_fd, buf, BLOCK_SIZE);
+#if !defined(CONFIG_ARCH_S390) && !defined(CONFIG_PPC_ISERIES)
+		if (!(i % 16)) {
+			printk("%c\b", rotator[rotate & 0x3]);
+			rotate++;
+		}
+#endif
+	}
+	printk("done.\n");
+	kfree(buf);
+
+successful_load:
+	res = 1;
+done:
+	close(in_fd);
+noclose_input:
+	close(out_fd);
+out:
+	sys_unlink("/dev/ram");
+#endif
+	return res;
+}
+
+static int __init rd_load_disk(int n)
+{
+#ifdef CONFIG_BLK_DEV_RAM
+	if (rd_prompt)
+		change_floppy("root floppy disk to be loaded into RAM disk");
+	create_dev("/dev/ram", MKDEV(RAMDISK_MAJOR, n), NULL);
+#endif
+	return rd_load_image("/dev/root");
+}
+
+#ifdef CONFIG_DEVFS_FS
+
+static void __init convert_name(char *prefix, char *name, char *p, int part)
+{
+	int host, bus, target, lun;
+	char dest[64];
+	char src[64];
+	char *base = p - 1;
+
+	/*  Decode "c#b#t#u#"  */
+	if (*p++ != 'c')
+		return;
+	host = simple_strtol(p, &p, 10);
+	if (*p++ != 'b')
+		return;
+	bus = simple_strtol(p, &p, 10);
+	if (*p++ != 't')
+		return;
+	target = simple_strtol(p, &p, 10);
+	if (*p++ != 'u')
+		return;
+	lun = simple_strtol(p, &p, 10);
+	if (!part)
+		sprintf(dest, "%s/host%d/bus%d/target%d/lun%d",
+				prefix, host, bus, target, lun);
+	else if (*p++ == 'p')
+		sprintf(dest, "%s/host%d/bus%d/target%d/lun%d/part%s",
+				prefix, host, bus, target, lun, p);
+	else
+		sprintf(dest, "%s/host%d/bus%d/target%d/lun%d/disc",
+				prefix, host, bus, target, lun);
+	*base = '\0';
+	sprintf(src, "/dev/%s", name);
+	sys_mkdir(src, 0755);
+	*base = '/';
+	sprintf(src, "/dev/%s", name);
+	sys_symlink(dest, src);
+}
+
+static void __init devfs_make_root(char *name)
+{
+
+	if (!strncmp(name, "sd/", 3))
+		convert_name("../scsi", name, name+3, 1);
+	else if (!strncmp(name, "sr/", 3))
+		convert_name("../scsi", name, name+3, 0);
+	else if (!strncmp(name, "ide/hd/", 7))
+		convert_name("..", name, name + 7, 1);
+	else if (!strncmp(name, "ide/cd/", 7))
+		convert_name("..", name, name + 7, 0);
+}
+#else
+static void __init devfs_make_root(char *name)
+{
+}
+#endif
+
+static void __init mount_root(void)
+{
+#ifdef CONFIG_ROOT_NFS
+	if (MAJOR(ROOT_DEV) == UNNAMED_MAJOR) {
+		if (mount_nfs_root()) {
+			sys_chdir("/root");
+			ROOT_DEV = current->fs->pwdmnt->mnt_sb->s_dev;
+			printk("VFS: Mounted root (nfs filesystem).\n");
+			return;
+		}
+		printk(KERN_ERR "VFS: Unable to mount root fs via NFS, trying floppy.\n");
+		ROOT_DEV = MKDEV(FLOPPY_MAJOR, 0);
+	}
+#endif
+	devfs_make_root(root_device_name);
+	create_dev("/dev/root", ROOT_DEV, root_device_name);
+#ifdef CONFIG_BLK_DEV_FD
+	if (MAJOR(ROOT_DEV) == FLOPPY_MAJOR) {
+		/* rd_doload is 2 for a dual initrd/ramload setup */
+		if (rd_doload==2) {
+			if (rd_load_disk(1)) {
+				ROOT_DEV = MKDEV(RAMDISK_MAJOR, 1);
+				create_dev("/dev/root", ROOT_DEV, NULL);
+			}
+		} else
+			change_floppy("root floppy");
+	}
+#endif
+	mount_block_root("/dev/root", root_mountflags);
+}
+
+#ifdef CONFIG_BLK_DEV_INITRD
+static int old_fd, root_fd;
+static int do_linuxrc(void * shell)
+{
+	static char *argv[] = { "linuxrc", NULL, };
+	extern char * envp_init[];
+
+	close(old_fd);
+	close(root_fd);
+	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);
+}
+
+#endif
+
+static void __init handle_initrd(void)
+{
+#ifdef CONFIG_BLK_DEV_INITRD
+	int ram0 = kdev_t_to_nr(MKDEV(RAMDISK_MAJOR,0));
+	int error;
+	int i, pid;
+
+	create_dev("/dev/root.old", ram0, NULL);
+	/* mount initrd on rootfs' /root */
+	mount_block_root("/dev/root.old", root_mountflags & ~MS_RDONLY);
+	sys_mkdir("/old", 0700);
+	root_fd = open("/", 0, 0);
+	old_fd = open("/old", 0, 0);
+	/* move initrd over / and chdir/chroot in initrd root */
+	sys_chdir("/root");
+	sys_mount(".", "/", NULL, MS_MOVE, NULL);
+	sys_chroot(".");
+	mount_devfs_fs ();
+
+	pid = kernel_thread(do_linuxrc, "/linuxrc", SIGCHLD);
+	if (pid > 0) {
+		while (pid != wait(&i))
+			yield();
+	}
+
+	/* move initrd to rootfs' /old */
+	sys_fchdir(old_fd);
+	sys_mount("/", ".", NULL, MS_MOVE, NULL);
+	/* switch root and cwd back to / of rootfs */
+	sys_fchdir(root_fd);
+	sys_chroot(".");
+	sys_umount("/old/dev", 0);
+
+	if (real_root_dev == ram0) {
+		sys_chdir("/old");
+		return;
+	}
+
+	ROOT_DEV = real_root_dev;
+	mount_root();
+
+	printk(KERN_NOTICE "Trying to move old root to /initrd ... ");
+	error = sys_mount("/old", "/root/initrd", NULL, MS_MOVE, NULL);
+	if (!error)
+		printk("okay\n");
+	else {
+		int fd = open("/dev/root.old", O_RDWR, 0);
+		printk("failed\n");
+		printk(KERN_NOTICE "Unmounting old root\n");
+		sys_umount("/old", MNT_DETACH);
+		printk(KERN_NOTICE "Trying to free ramdisk memory ... ");
+		if (fd < 0) {
+			error = fd;
+		} else {
+			error = sys_ioctl(fd, BLKFLSBUF, 0);
+			close(fd);
+		}
+		printk(!error ? "okay\n" : "failed\n");
+	}
+#endif
+}
+
+static int __init initrd_load(void)
+{
+#ifdef CONFIG_BLK_DEV_INITRD
+	create_dev("/dev/ram", MKDEV(RAMDISK_MAJOR, 0), NULL);
+	create_dev("/dev/initrd", MKDEV(RAMDISK_MAJOR, INITRD_MINOR), NULL);
+#endif
+	return rd_load_image("/dev/initrd");
+}
+
+/*
+ * Prepare the namespace - decide what/where to mount, load ramdisks, etc.
+ */
+void prepare_namespace(void)
+{
+	int is_floppy = MAJOR(ROOT_DEV) == FLOPPY_MAJOR;
+#ifdef CONFIG_ALL_PPC
+	extern void arch_discover_root(void);
+	arch_discover_root();
+#endif /* CONFIG_ALL_PPC */
+#ifdef CONFIG_BLK_DEV_INITRD
+	if (!initrd_start)
+		mount_initrd = 0;
+	real_root_dev = ROOT_DEV;
+#endif
+	sys_mkdir("/dev", 0700);
+	sys_mkdir("/root", 0700);
+	sys_mknod("/dev/console", S_IFCHR|0600, MKDEV(TTYAUX_MAJOR, 1));
+#ifdef CONFIG_DEVFS_FS
+	sys_mount("devfs", "/dev", "devfs", 0, NULL);
+	do_devfs = 1;
+#endif
+
+	create_dev("/dev/root", ROOT_DEV, NULL);
+	if (mount_initrd) {
+		if (initrd_load() && ROOT_DEV != MKDEV(RAMDISK_MAJOR, 0)) {
+			handle_initrd();
+			goto out;
+		}
+	} else if (is_floppy && rd_doload && rd_load_disk(0))
+		ROOT_DEV = MKDEV(RAMDISK_MAJOR, 0);
+	mount_root();
+out:
+	sys_umount("/dev", 0);
+	sys_mount(".", "/", NULL, MS_MOVE, NULL);
+	sys_chroot(".");
+	mount_devfs_fs ();
+}
+
+#if defined(BUILD_CRAMDISK) && defined(CONFIG_BLK_DEV_RAM)
+
+/*
+ * gzip declarations
+ */
+
+#define OF(args)  args
+
+#ifndef memzero
+#define memzero(s, n)     memset ((s), 0, (n))
+#endif
+
+typedef unsigned char  uch;
+typedef unsigned short ush;
+typedef unsigned long  ulg;
+
+#define INBUFSIZ 4096
+#define WSIZE 0x8000    /* window size--must be a power of two, and */
+			/*  at least 32K for zip's deflate method */
+
+static uch *inbuf;
+static uch *window;
+
+static unsigned insize;  /* valid bytes in inbuf */
+static unsigned inptr;   /* index of next byte to be processed in inbuf */
+static unsigned outcnt;  /* bytes in output buffer */
+static int exit_code;
+static long bytes_out;
+static int crd_infd, crd_outfd;
+
+#define get_byte()  (inptr < insize ? inbuf[inptr++] : fill_inbuf())
+		
+/* Diagnostic functions (stubbed out) */
+#define Assert(cond,msg)
+#define Trace(x)
+#define Tracev(x)
+#define Tracevv(x)
+#define Tracec(c,x)
+#define Tracecv(c,x)
+
+#define STATIC static
+
+static int  fill_inbuf(void);
+static void flush_window(void);
+static void *malloc(int size);
+static void free(void *where);
+static void error(char *m);
+static void gzip_mark(void **);
+static void gzip_release(void **);
+
+#include "../lib/inflate.c"
+
+static void __init *malloc(int size)
+{
+	return kmalloc(size, GFP_KERNEL);
+}
+
+static void __init free(void *where)
+{
+	kfree(where);
+}
+
+static void __init gzip_mark(void **ptr)
+{
+}
+
+static void __init gzip_release(void **ptr)
+{
+}
+
+
+/* ===========================================================================
+ * Fill the input buffer. This is called only when the buffer is empty
+ * and at least one byte is really needed.
+ */
+static int __init fill_inbuf(void)
+{
+	if (exit_code) return -1;
+	
+	insize = read(crd_infd, inbuf, INBUFSIZ);
+	if (insize == 0) return -1;
+
+	inptr = 1;
+
+	return inbuf[0];
+}
+
+/* ===========================================================================
+ * Write the output window window[0..outcnt-1] and update crc and bytes_out.
+ * (Used for the decompressed data only.)
+ */
+static void __init flush_window(void)
+{
+    ulg c = crc;         /* temporary variable */
+    unsigned n;
+    uch *in, ch;
+    
+    write(crd_outfd, window, outcnt);
+    in = window;
+    for (n = 0; n < outcnt; n++) {
+	    ch = *in++;
+	    c = crc_32_tab[((int)c ^ ch) & 0xff] ^ (c >> 8);
+    }
+    crc = c;
+    bytes_out += (ulg)outcnt;
+    outcnt = 0;
+}
+
+static void __init error(char *x)
+{
+	printk(KERN_ERR "%s", x);
+	exit_code = 1;
+}
+
+static int __init crd_load(int in_fd, int out_fd)
+{
+	int result;
+
+	insize = 0;		/* valid bytes in inbuf */
+	inptr = 0;		/* index of next byte to be processed in inbuf */
+	outcnt = 0;		/* bytes in output buffer */
+	exit_code = 0;
+	bytes_out = 0;
+	crc = (ulg)0xffffffffL; /* shift register contents */
+
+	crd_infd = in_fd;
+	crd_outfd = out_fd;
+	inbuf = kmalloc(INBUFSIZ, GFP_KERNEL);
+	if (inbuf == 0) {
+		printk(KERN_ERR "RAMDISK: Couldn't allocate gzip buffer\n");
+		return -1;
+	}
+	window = kmalloc(WSIZE, GFP_KERNEL);
+	if (window == 0) {
+		printk(KERN_ERR "RAMDISK: Couldn't allocate gzip window\n");
+		kfree(inbuf);
+		return -1;
+	}
+	makecrc();
+	result = gunzip();
+	kfree(inbuf);
+	kfree(window);
+	return result;
+}
+
+#endif  /* BUILD_CRAMDISK && CONFIG_BLK_DEV_RAM */
diff --git a/uClinux-2.4.20-uc1/init/main.c b/uClinux-2.4.20-uc1/init/main.c
new file mode 100644
index 0000000..b360d93
--- /dev/null
+++ b/uClinux-2.4.20-uc1/init/main.c
@@ -0,0 +1,583 @@
+/*
+ *  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/devfs_fs_kernel.h>
+#include <linux/unistd.h>
+#include <linux/string.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/iobuf.h>
+#include <linux/bootmem.h>
+#include <linux/tty.h>
+
+#include <asm/io.h>
+#include <asm/bugs.h>
+
+#if defined(CONFIG_ARCH_S390)
+#include <asm/s390mach.h>
+#include <asm/ccwcache.h>
+#endif
+
+#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_NUBUS
+#include <linux/nubus.h>
+#endif
+
+#ifdef CONFIG_ISAPNP
+#include <linux/isapnp.h>
+#endif
+
+#ifdef CONFIG_IRDA
+extern int irda_proto_init(void);
+extern int irda_device_init(void);
+#endif
+
+#ifdef CONFIG_X86_LOCAL_APIC
+#include <asm/smp.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__ < 91)
+#if !defined(CONFIG_V850E) && !defined(CONFIG_NIOS)
+#error Sorry, your GCC is too old. It builds incorrect kernels.
+#else
+#warning Sorry, your GCC is too old. It builds incorrect kernels.
+#endif
+#endif
+
+extern char _stext, _etext;
+extern char *linux_banner;
+
+static int init(void *);
+
+extern void init_IRQ(void);
+extern void init_modules(void);
+extern void sock_init(void);
+extern void fork_init(unsigned long);
+extern void mca_init(void);
+extern void sbus_init(void);
+extern void ppc_init(void);
+extern void sysctl_init(void);
+extern void signals_init(void);
+extern int init_pcmcia_ds(void);
+
+extern void free_initmem(void);
+
+#ifdef CONFIG_TC
+extern void tc_init(void);
+#endif
+
+extern void ecard_init(void);
+
+#if defined(CONFIG_SYSVIPC)
+extern void ipc_init(void);
+#endif
+
+/*
+ * Boot command-line arguments
+ */
+#define MAX_INIT_ARGS 8
+#define MAX_INIT_ENVS 8
+
+extern void time_init(void);
+extern void softirq_init(void);
+
+int rows, cols;
+
+char *execute_command;
+
+static char * argv_init[MAX_INIT_ARGS+2] = { "init", NULL, };
+char * envp_init[MAX_INIT_ENVS+2] = { "HOME=/", "TERM=linux", NULL, };
+
+static int __init profile_setup(char *str)
+{
+    int par;
+    if (get_option(&str,&par)) prof_shift = par;
+	return 1;
+}
+
+__setup("profile=", profile_setup);
+
+static int __init checksetup(char *line)
+{
+	struct kernel_param *p;
+
+	p = &__setup_start;
+	do {
+		int n = strlen(p->str);
+		if (!strncmp(line,p->str,n)) {
+			if (p->setup_func(line+n))
+				return 1;
+		}
+		p++;
+	} while (p < &__setup_end);
+	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);
+}
+
+static int __init debug_kernel(char *str)
+{
+	if (*str)
+		return 0;
+	console_loglevel = 10;
+	return 1;
+}
+
+static int __init quiet_kernel(char *str)
+{
+	if (*str)
+		return 0;
+	console_loglevel = 4;
+	return 1;
+}
+
+__setup("debug", debug_kernel);
+__setup("quiet", quiet_kernel);
+
+/*
+ * 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,*quote;
+	int args, envs;
+
+	if (!*line)
+		return;
+	args = 0;
+	envs = 1;	/* TERM is set to 'linux' by default */
+	next = line;
+	while ((line = next) != NULL) {
+                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;
+		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;
+			if (*line)
+				argv_init[++args] = line;
+		}
+	}
+	argv_init[args+1] = NULL;
+	envp_init[envs+1] = NULL;
+}
+
+
+extern void setup_arch(char **);
+extern void cpu_idle(void);
+
+unsigned long wait_init_idle;
+
+#ifndef CONFIG_SMP
+
+#ifdef CONFIG_X86_LOCAL_APIC
+static void __init smp_init(void)
+{
+	APIC_init_uniprocessor();
+}
+#else
+#define smp_init()	do { } while (0)
+#endif
+
+#else
+
+
+/* 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();
+	wait_init_idle = cpu_online_map;
+	clear_bit(current->processor, &wait_init_idle); /* Don't wait on me! */
+
+	smp_threads_ready=1;
+	smp_commence();
+
+	/* Wait for the other cpus to set up their idle processes */
+	printk("Waiting on wait_init_idle (map = 0x%lx)\n", wait_init_idle);
+	while (wait_init_idle) {
+		cpu_relax();
+		barrier();
+	}
+	printk("All processors have done init_idle\n");
+}
+
+#endif
+
+/*
+ * We need to finalize in a non-__init function or else race conditions
+ * between the root thread and the init thread may cause start_kernel to
+ * be reaped by free_initmem before the root thread has proceeded to
+ * cpu_idle.
+ */
+
+static void rest_init(void)
+{
+	kernel_thread(init, NULL, CLONE_FS | CLONE_FILES | CLONE_SIGNAL);
+	unlock_kernel();
+	current->need_resched = 1;
+ 	cpu_idle();
+} 
+
+/*
+ *	Activate the first processor.
+ */
+
+asmlinkage void __init start_kernel(void)
+{
+	char * command_line;
+	extern char saved_command_line[];
+
+/*
+ * Interrupts are still disabled. Do necessary setups, then
+ * enable them
+ */
+	lock_kernel();
+	printk(linux_banner);
+	setup_arch(&command_line);
+	printk("Kernel command line: %s\n", saved_command_line);
+	parse_options(command_line);
+	trap_init();
+	init_IRQ();
+	sched_init();
+	softirq_init();
+	time_init();
+
+	/*
+	 * 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.
+	 */
+	console_init();
+#ifdef CONFIG_MODULES
+	init_modules();
+#endif
+	if (prof_shift) {
+		unsigned int size;
+		/* only text is profiled */
+		prof_len = (unsigned long) &_etext - (unsigned long) &_stext;
+		prof_len >>= prof_shift;
+		
+		size = prof_len * sizeof(unsigned int) + PAGE_SIZE-1;
+		prof_buffer = (unsigned int *) alloc_bootmem(size);
+	}
+
+	kmem_cache_init();
+	sti();
+	calibrate_delay();
+#ifdef CONFIG_BLK_DEV_INITRD
+	if (initrd_start && !initrd_below_start_ok &&
+			initrd_start < min_low_pfn << PAGE_SHIFT) {
+		printk(KERN_CRIT "initrd overwritten (0x%08lx < 0x%08lx) - "
+		    "disabling it.\n",initrd_start,min_low_pfn << PAGE_SHIFT);
+		initrd_start = 0;
+	}
+#endif
+	mem_init();
+	kmem_cache_sizes_init();
+	pgtable_cache_init();
+
+	/*
+	 * For architectures that have highmem, num_mappedpages represents
+	 * the amount of memory the kernel can use.  For other architectures
+	 * it's the same as the total pages.  We need both numbers because
+	 * some subsystems need to initialize based on how much memory the
+	 * kernel can use.
+	 */
+	if (num_mappedpages == 0)
+		num_mappedpages = num_physpages;
+  
+	fork_init(num_mappedpages);
+	proc_caches_init();
+	vfs_caches_init(num_physpages);
+	buffer_init(num_physpages);
+	page_cache_init(num_physpages);
+#if defined(CONFIG_ARCH_S390)
+	ccwcache_init();
+#endif
+	signals_init();
+#ifdef CONFIG_PROC_FS
+	proc_root_init();
+#endif
+#if defined(CONFIG_SYSVIPC)
+	ipc_init();
+#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();
+	rest_init();
+}
+
+struct task_struct *child_reaper = &init_task;
+
+static void __init do_initcalls(void)
+{
+	initcall_t *call;
+
+	call = &__initcall_start;
+	do {
+		(*call)();
+		call++;
+	} while (call < &__initcall_end);
+
+	/* Make sure there is no pending stuff from the initcall sequence */
+	flush_scheduled_tasks();
+}
+
+/*
+ * 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)
+{
+
+	/*
+	 * 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..
+	 */
+#if defined(CONFIG_ARCH_S390)
+	s390_init_machine_check();
+#endif
+
+#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_NUBUS
+	nubus_init();
+#endif
+#ifdef CONFIG_ISAPNP
+	isapnp_init();
+#endif
+#ifdef CONFIG_TC
+	tc_init();
+#endif
+
+	/* Networking initialization needs a process context */ 
+	sock_init();
+
+	start_context_thread();
+	do_initcalls();
+
+#ifdef CONFIG_IRDA
+	irda_proto_init();
+	irda_device_init(); /* Must be done after protocol initialization */
+#endif
+#ifdef CONFIG_PCMCIA
+	init_pcmcia_ds();		/* Do this last */
+#endif
+}
+
+extern void prepare_namespace(void);
+
+static int init(void * unused)
+{
+	lock_kernel();
+	do_basic_setup();
+
+	prepare_namespace();
+
+	/*
+	 * 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.");
+}
diff --git a/uClinux-2.4.20-uc1/init/version.c b/uClinux-2.4.20-uc1/init/version.c
new file mode 100644
index 0000000..95add71
--- /dev/null
+++ b/uClinux-2.4.20-uc1/init/version.c
@@ -0,0 +1,26 @@
+/*
+ *  linux/init/version.c
+ *
+ *  Copyright (C) 1992  Theodore Ts'o
+ *
+ *  May be freely distributed as part of Linux.
+ */
+
+#include <linux/uts.h>
+#include <linux/utsname.h>
+#include <linux/version.h>
+#include <linux/compile.h>
+
+#define version(a) Version_ ## a
+#define version_string(a) version(a)
+
+int version_string(LINUX_VERSION_CODE);
+
+struct new_utsname system_utsname = {
+	UTS_SYSNAME, UTS_NODENAME, UTS_RELEASE, UTS_VERSION,
+	UTS_MACHINE, UTS_DOMAINNAME
+};
+
+const char *linux_banner = 
+	"Linux version " UTS_RELEASE " (" LINUX_COMPILE_BY "@"
+	LINUX_COMPILE_HOST ") (" LINUX_COMPILER ") " UTS_VERSION "\n";