--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/target-utils/libmpffs/init.c	Sun Sep 01 21:55:51 2013 +0000
@@ -0,0 +1,74 @@
+#include "types.h"
+#include "struct.h"
+#include "globals.h"
+#include "macros.h"
+
+static const u8 ffs_sector_signature[6] = {'F', 'f', 's', '#', 0x10, 0x02};
+static const u8 blank_flash_line[16] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+					0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+					0xFF, 0xFF, 0xFF, 0xFF};
+
+static
+find_indexblk()
+{
+	u32 sector_addr;
+	u8 *sector_ptr;
+	int i;
+
+	printf("Looking for MPFFS active index block\n");
+	sector_addr = mpffs_base_addr;
+	for (i = 0; i < mpffs_nsectors; i++) {
+		sector_ptr = (u8 *) sector_addr;
+		if (!bcmp(sector_ptr, ffs_sector_signature, 6) &&
+		    sector_ptr[8] == 0xAB) {
+			printf("Found at %08X\n", sector_addr);
+			mpffs_active_index = (struct inode *) sector_ptr;
+			return(0);
+		}
+		sector_addr += mpffs_sector_size;
+	}
+	printf("Error: Not found in any of the %d candidate sectors\n",
+		mpffs_nsectors);
+	return(-1);
+}
+
+static
+find_rootino()
+{
+	int ino;
+	struct inode *irec;
+
+	printf("Looking for the root inode\n");
+	for (ino = 1; ; ino++) {
+		if (ino >= mpffs_sector_size >> 4) {
+		    printf("Error: Hit end of sector, no root inode found\n");
+			return(-1);
+		}
+		irec = mpffs_active_index + ino;
+		if (!bcmp((u8 *) irec, blank_flash_line, 16)) {
+			printf("Error: Hit blank flash, no root inode found\n");
+			return(-1);
+		}
+		if (irec->type == OBJTYPE_DIR && *inode_to_dataptr(irec) == '/')
+			break;
+	}
+	printf("Found at inode #%x\n", ino);
+	mpffs_root_ino = ino;
+	return(0);
+}
+
+mpffs_init()
+{
+	int stat;
+
+	if (mpffs_init_done)
+		return(0);
+	stat = find_indexblk();
+	if (stat < 0)
+		return(stat);
+	stat = find_rootino();
+	if (stat < 0)
+		return(stat);
+	mpffs_init_done = 1;
+	return(0);
+}