ENGR00119171: ubifs support for android recovery mode.

ubifs support for android recovery mode.

Signed-off-by: Terry Lv <r65388@freescale.com>

10 files changed, 337 insertions, 239 deletions

diff --git a/board/freescale/mx51_3stack/flash_header.S b/board/freescale/mx51_3stack/flash_header.S
index 172220a..bbfa474 100644
--- a/board/freescale/mx51_3stack/flash_header.S
+++ b/board/freescale/mx51_3stack/flash_header.S
@@ -108,6 +108,6 @@ MXC_DCD_ITEM(54, 4, ESDCTL_BASE_ADDR + ESDCTL_ESDMISC, 0x000ad6d0)
 MXC_DCD_ITEM(55, 4, ESDCTL_BASE_ADDR + ESDCTL_ESDCDLYGD, 0x90000000)
 MXC_DCD_ITEM(56, 4, ESDCTL_BASE_ADDR + ESDCTL_ESDSCR, 0x00000000)
 dcd_data_end:
-image_len:		.word	0x80000
-//image_len:		.word	_end - _start
+//image_len:		.word	0x80000
+image_len:		.word	__u_boot_cmd_end - TEXT_BASE
 #endif
diff --git a/board/freescale/mx51_3stack/mx51_3stack.c b/board/freescale/mx51_3stack/mx51_3stack.c
index 2dc6b2d..38eed4f 100644
--- a/board/freescale/mx51_3stack/mx51_3stack.c
+++ b/board/freescale/mx51_3stack/mx51_3stack.c
@@ -535,7 +535,7 @@ int board_init(void)
 #ifdef BOARD_LATE_INIT
 
 #if defined(CONFIG_FSL_ANDROID) && defined(CONFIG_MXC_KPD)
-inline int waiting_for_func_key_pressing(void)
+static int waiting_for_func_key_pressing(void)
 {
 	struct kpp_key_info key_info = {0, 0};
 	int switch_delay = CONFIG_ANDROID_BOOTMOD_DELAY;
@@ -607,7 +607,7 @@ inline int waiting_for_func_key_pressing(void)
 	return 0;
 }
 
-inline int switch_to_recovery_mode(void)
+static int switch_to_recovery_mode(void)
 {
 	char *env = NULL;
 	char *boot_args = NULL;
@@ -648,127 +648,164 @@ inline int switch_to_recovery_mode(void)
 	return 0;
 }
 
-inline int check_recovery_cmd_file(void)
+static int check_mmc_recovery_cmd_file(int dev_num, int part_num, char *path)
 {
+	block_dev_desc_t *dev_desc = NULL;
+	struct mmc *mmc = find_mmc_device(dev_num);
 	disk_partition_t info;
-	ulong part_length;
-	int filelen;
+	ulong part_length = 0;
+	int filelen = 0;
 
-	switch (get_boot_device()) {
-	case MMC_BOOT:
-		{
-			block_dev_desc_t *dev_desc = NULL;
-			struct mmc *mmc = find_mmc_device(0);
+	memset(&info, 0, sizeof(disk_partition_t));
 
-			dev_desc = get_dev("mmc", 0);
+	dev_desc = get_dev("mmc", dev_num);
 
-			if (NULL == dev_desc) {
-				puts("** Block device MMC 0 not supported\n");
-				return 0;
-			}
+	if (NULL == dev_desc) {
+		printf("** Block device MMC %d not supported\n",
+				dev_num);
+		return 0;
+	}
 
-			mmc_init(mmc);
+	mmc_init(mmc);
 
-			if (get_partition_info(dev_desc,
-					CONFIG_ANDROID_CACHE_PARTITION_MMC,
-					&info)) {
-				printf("** Bad partition %d **\n",
-					CONFIG_ANDROID_CACHE_PARTITION_MMC);
-				return 0;
-			}
+	if (get_partition_info(dev_desc,
+			part_num,
+			&info)) {
+		printf("** Bad partition %d **\n",
+			part_num);
+		return 0;
+	}
 
-			part_length = ext2fs_set_blk_dev(dev_desc,
-								CONFIG_ANDROID_CACHE_PARTITION_MMC);
-			if (part_length == 0) {
-				printf("** Bad partition - mmc 0:%d **\n",
-					CONFIG_ANDROID_CACHE_PARTITION_MMC);
-				ext2fs_close();
-				return 0;
-			}
+	part_length = ext2fs_set_blk_dev(dev_desc,
+						part_num);
+	if (part_length == 0) {
+		printf("** Bad partition - mmc 0:%d **\n",
+			part_num);
+		ext2fs_close();
+		return 0;
+	}
 
-			if (!ext2fs_mount(part_length)) {
-				printf("** Bad ext2 partition or disk - mmc 0:%d **\n",
-					CONFIG_ANDROID_CACHE_PARTITION_MMC);
-				ext2fs_close();
-				return 0;
-			}
+	if (!ext2fs_mount(part_length)) {
+		printf("** Bad ext2 partition or disk - mmc 0:%d **\n",
+			part_num);
+		ext2fs_close();
+		return 0;
+	}
 
-			filelen = ext2fs_open(CONFIG_ANDROID_RECOVERY_CMD_FILE);
+	filelen = ext2fs_open(path);
 
-			ext2fs_close();
-		}
-		break;
-	case NAND_BOOT:
-		{
-			#if 0
-			struct mtd_device *dev_desc = NULL;
-			struct part_info *part = NULL;
-			struct mtd_partition mtd_part;
-			struct mtd_info *mtd_info;
-			char mtd_dev[16] = { 0 };
-			char mtd_buffer[80] = { 0 };
-			u8 pnum;
-			int err;
-			u8 read_test;
-
-			/* ========== ubi and mtd operations ========== */
-			if (mtdparts_init() != 0) {
-				printf("Error initializing mtdparts!\n");
-				return 0;
-			}
+	ext2fs_close();
 
-			if (find_dev_and_part("nand", &dev_desc, &pnum, &part)) {
-				printf("Partition %s not found!\n", "nand");
-				return 0;
-			}
-			sprintf(mtd_dev, "%s%d",
-					MTD_DEV_TYPE(dev_desc->id->type),
-					dev_desc->id->num);
-			mtd_info = get_mtd_device_nm(mtd_dev);
-			if (IS_ERR(mtd_info)) {
-				printf("Partition %s not found on device %s!\n",
-					"nand", mtd_dev);
-				return 0;
-			}
+	return (filelen > 0) ? 1 : 0;
+}
 
-			sprintf(mtd_buffer, "mtd=%d", pnum);
-			memset(&mtd_part, 0, sizeof(mtd_part));
-			mtd_part.name = mtd_buffer;
-			mtd_part.size = part->size;
-			mtd_part.offset = part->offset;
-			add_mtd_partitions(&info, &mtd_part, 1);
-
-			err = ubi_mtd_param_parse(mtd_buffer, NULL);
-			if (err) {
-				del_mtd_partitions(&info);
-				return 0;
-			}
+extern int ubifs_init(void);
+extern int ubifs_mount(char *vol_name);
+extern int ubifs_load(char *filename, u32 addr, u32 size);
 
-			err = ubi_init();
-			if (err) {
-				del_mtd_partitions(&info);
-				return 0;
-			}
+static int check_nand_recovery_cmd_file(char *mtd_part_name,
+				char *ubi_part_name,
+				char *path)
+{
+	struct mtd_device *dev_desc = NULL;
+	struct part_info *part = NULL;
+	struct mtd_partition mtd_part;
+	struct mtd_info *mtd_info = NULL;
+	char mtd_dev[16] = { 0 };
+	char mtd_buffer[80] = { 0 };
+	u8 pnum = 0,
+	   read_test = 0;
+	int err = 0,
+		filelen = 0;
+
+	memset(&mtd_part, 0, sizeof(struct mtd_partition));
+
+	/* ========== ubi and mtd operations ========== */
+	if (mtdparts_init() != 0) {
+		printf("Error initializing mtdparts!\n");
+		return 0;
+	}
 
-			/* ========== ubifs operations ========== */
-			/* Init ubifs */
-			ubifs_init();
+	if (find_dev_and_part(mtd_part_name, &dev_desc, &pnum, &part)) {
+		printf("Partition %s not found!\n", mtd_part_name);
+		return 0;
+	}
+	sprintf(mtd_dev, "%s%d",
+			MTD_DEV_TYPE(dev_desc->id->type),
+			dev_desc->id->num);
+	mtd_info = get_mtd_device_nm(mtd_dev);
+	if (IS_ERR(mtd_info)) {
+		printf("Partition %s not found on device %s!\n",
+			"nand", mtd_dev);
+		return 0;
+	}
 
-			if (ubifs_mount(CONFIG_ANDROID_CACHE_PARTITION_NAND)) {
-				printf("Mount ubifs volume %s fail!\n",
-						CONFIG_ANDROID_CACHE_PARTITION_NAND);
-				return 0;
-			}
+	sprintf(mtd_buffer, "mtd=%d", pnum);
+	memset(&mtd_part, 0, sizeof(mtd_part));
+	mtd_part.name = mtd_buffer;
+	mtd_part.size = part->size;
+	mtd_part.offset = part->offset;
+	add_mtd_partitions(mtd_info, &mtd_part, 1);
 
-			/* Try to read one byte for a read test. */
-			if (ubifs_load(CONFIG_ANDROID_RECOVERY_CMD_FILE,
-						&read_test, 1)) {
-				/* File not found */
-				filelen = 0;
-			} else
-				filelen = 1;
-		#endif
-		}
+	err = ubi_mtd_param_parse(mtd_buffer, NULL);
+	if (err) {
+		del_mtd_partitions(mtd_info);
+		return 0;
+	}
+
+	err = ubi_init();
+	if (err) {
+		del_mtd_partitions(mtd_info);
+		return 0;
+	}
+
+	/* ========== ubifs operations ========== */
+	/* Init ubifs */
+	ubifs_init();
+
+	if (ubifs_mount(ubi_part_name)) {
+		printf("Mount ubifs volume %s fail!\n",
+				ubi_part_name);
+		return 0;
+	}
+
+	/* Try to read one byte for a read test. */
+	if (ubifs_load(path, (u32)&read_test, 1)) {
+		/* File not found */
+		filelen = 0;
+	} else
+		filelen = 1;
+
+	return filelen;
+}
+
+static int check_recovery_cmd_file(void)
+{
+	int if_exist;
+	char *env = NULL;
+
+	switch (get_boot_device()) {
+	case MMC_BOOT:
+		if_exist = check_mmc_recovery_cmd_file(0,
+				CONFIG_ANDROID_CACHE_PARTITION_MMC,
+				CONFIG_ANDROID_RECOVERY_CMD_FILE);
+		break;
+	case NAND_BOOT:
+		env = getenv("mtdparts");
+		if (!env)
+			setenv("mtdparts", MTDPARTS_DEFAULT);
+
+		env = getenv("mtdids");
+		if (!env)
+			setenv("mtdids", MTDIDS_DEFAULT);
+
+		env = getenv("partition");
+		if (!env)
+			setenv("partition", MTD_ACTIVE_PART);
+
+		if_exist = check_nand_recovery_cmd_file(CONFIG_ANDROID_UBIFS_PARTITION_NM,
+						CONFIG_ANDROID_CACHE_PARTITION_NAND,
+						CONFIG_ANDROID_RECOVERY_CMD_FILE);
 		break;
 	case SPI_NOR_BOOT:
 		return 0;
@@ -779,7 +816,7 @@ inline int check_recovery_cmd_file(void)
 		break;
 	}
 
-	return (filelen > 0) ? 1 : 0;
+	return if_exist;
 }
 #endif
 
diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c
index 391dea4..9efe7cd 100644
--- a/fs/ubifs/super.c
+++ b/fs/ubifs/super.c
@@ -1178,6 +1178,7 @@ int ubifs_mount(char *vol_name)
 		ubifs_umount(ubifs_sb->s_fs_info);
 
 	INIT_LIST_HEAD(&ubifs_infos);
+	INIT_LIST_HEAD(&(ubifs_fs_type.fs_supers));
 
 	/*
 	 * Mount in read-only mode
diff --git a/fs/ubifs/ubifs.c b/fs/ubifs/ubifs.c
index 8ede188..82f1c54 100644
--- a/fs/ubifs/ubifs.c
+++ b/fs/ubifs/ubifs.c
@@ -124,9 +124,13 @@ int ubifs_decompress(const void *in_buf, int in_len, void *out_buf,
 static int __init compr_init(struct ubifs_compressor *compr)
 {
 	ubifs_compressors[compr->compr_type] = compr;
+
+#ifndef CONFIG_RELOC_FIXUP_WORKS
 	ubifs_compressors[compr->compr_type]->name += gd->reloc_off;
 	ubifs_compressors[compr->compr_type]->capi_name += gd->reloc_off;
 	ubifs_compressors[compr->compr_type]->decompress += gd->reloc_off;
+#endif
+
 	return 0;
 }
 
@@ -379,9 +383,11 @@ static unsigned long ubifs_findfile(struct super_block *sb, char *filename)
 	int ret;
 	char *next;
 	char fpath[128];
+	char symlinkpath[128];
 	char *name = fpath;
 	unsigned long root_inum = 1;
 	unsigned long inum;
+	int symlink_count = 0; /* Don't allow symlink recursion */
 
 	strcpy(fpath, filename);
 
@@ -397,6 +403,9 @@ static unsigned long ubifs_findfile(struct super_block *sb, char *filename)
 		return inum;
 
 	for (;;) {
+		struct inode *inode;
+		struct ubifs_inode *ui;
+
 		/* Extract the actual part from the pathname.  */
 		next = strchr(name, '/');
 		if (next) {
@@ -406,18 +415,48 @@ static unsigned long ubifs_findfile(struct super_block *sb, char *filename)
 		}
 
 		ret = ubifs_finddir(sb, name, root_inum, &inum);
+		if (!ret)
+			return 0;
+		inode = ubifs_iget(sb, inum);
+
+		if (!inode)
+			return 0;
+		ui = ubifs_inode(inode);
+
+		if ((inode->i_mode & S_IFMT) == S_IFLNK) {
+			char link_name[64];
+			char buf[128];
+
+			/* We have some sort of symlink recursion, bail out */
+			if (symlink_count++ > 8) {
+				printf("Symlink recursion, aborting\n");
+				return 0;
+			}
+			memcpy(link_name, ui->data, ui->data_len);
+			link_name[ui->data_len] = '\0';
+
+			if (link_name[0] == '/') {
+				/* Absolute path, redo everything without
+				 * the leading slash */
+				next = name = link_name + 1;
+				root_inum = 1;
+				continue;
+			}
+			/* Relative to cur dir */
+			sprintf(buf, "%s/%s",
+					link_name, next == NULL ? "" : next);
+			memcpy(symlinkpath, buf, sizeof(buf));
+			next = name = symlinkpath;
+			continue;
+		}
 
 		/*
 		 * Check if directory with this name exists
 		 */
 
 		/* Found the node!  */
-		if (!next || *next == '\0') {
-			if (ret)
-				return inum;
-
-			break;
-		}
+		if (!next || *next == '\0')
+			return inum;
 
 		root_inum = inum;
 		name = next;
@@ -614,10 +653,10 @@ int ubifs_load(char *filename, u32 addr, u32 size)
 	int err = 0;
 	int i;
 	int count;
-	char link_name[64];
-	struct ubifs_inode *ui;
 
 	c->ubi = ubi_open_volume(c->vi.ubi_num, c->vi.vol_id, UBI_READONLY);
+	/* ubifs_findfile will resolve symlinks, so we know that we get
+	 * the real file here */
 	inum = ubifs_findfile(ubifs_sb, filename);
 	if (!inum) {
 		err = -1;
@@ -635,23 +674,6 @@ int ubifs_load(char *filename, u32 addr, u32 size)
 	}
 
 	/*
-	 * Check for symbolic link
-	 */
-	ui = ubifs_inode(inode);
-	if (((inode->i_mode & S_IFMT) == S_IFLNK) && ui->data_len) {
-		memcpy(link_name, ui->data, ui->data_len);
-		link_name[ui->data_len] = '\0';
-		printf("%s is linked to %s!\n", filename, link_name);
-		ubifs_iput(inode);
-
-		/*
-		 * Now we have the "real" filename, call ubifs_load()
-		 * again (recursive call) to load this file instead
-		 */
-		return ubifs_load(link_name, addr, size);
-	}
-
-	/*
 	 * If no size was specified or if size bigger than filesize
 	 * set size to filesize
 	 */
diff --git a/fs/ubifs/ubifs.h b/fs/ubifs/ubifs.h
index 43865aa..06772af 100644
--- a/fs/ubifs/ubifs.h
+++ b/fs/ubifs/ubifs.h
@@ -449,38 +449,6 @@ static inline ino_t parent_ino(struct dentry *dentry)
 	return res;
 }
 
-/* linux/include/linux/bitops.h */
-
-#define BIT_MASK(nr)		(1UL << ((nr) % BITS_PER_LONG))
-#define BIT_WORD(nr)		((nr) / BITS_PER_LONG)
-
-/* linux/include/asm-generic/bitops/non-atomic.h */
-
-/**
- * __set_bit - Set a bit in memory
- * @nr: the bit to set
- * @addr: the address to start counting from
- *
- * Unlike set_bit(), this function is non-atomic and may be reordered.
- * If it's called on the same region of memory simultaneously, the effect
- * may be that only one operation succeeds.
- */
-static inline void __set_bit(int nr, volatile unsigned long *addr)
-{
-	unsigned long mask = BIT_MASK(nr);
-	unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr);
-
-	*p  |= mask;
-}
-
-static inline void __clear_bit(int nr, volatile unsigned long *addr)
-{
-	unsigned long mask = BIT_MASK(nr);
-	unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr);
-
-	*p &= ~mask;
-}
-
 /* debug.c */
 
 #define DEFINE_SPINLOCK(...)
diff --git a/include/asm-arm/bitops.h b/include/asm-arm/bitops.h
index 4b8bab2..8eeada5 100644
--- a/include/asm-arm/bitops.h
+++ b/include/asm-arm/bitops.h
@@ -17,6 +17,8 @@
 
 #ifdef __KERNEL__
 
+#include <asm/proc/system.h>
+
 #define smp_mb__before_clear_bit()	do { } while (0)
 #define smp_mb__after_clear_bit()	do { } while (0)
 
@@ -25,59 +27,72 @@
  */
 extern void set_bit(int nr, volatile void * addr);
 
-static inline void __set_bit(int nr, volatile void *addr)
-{
-	((unsigned char *) addr)[nr >> 3] |= (1U << (nr & 7));
-}
-
 extern void clear_bit(int nr, volatile void * addr);
 
-static inline void __clear_bit(int nr, volatile void *addr)
-{
-	((unsigned char *) addr)[nr >> 3] &= ~(1U << (nr & 7));
-}
-
 extern void change_bit(int nr, volatile void * addr);
 
 static inline void __change_bit(int nr, volatile void *addr)
 {
-	((unsigned char *) addr)[nr >> 3] ^= (1U << (nr & 7));
-}
+	unsigned long mask = BIT_MASK(nr);
+	unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr);
 
-extern int test_and_set_bit(int nr, volatile void * addr);
+	*p ^= mask;
+}
 
 static inline int __test_and_set_bit(int nr, volatile void *addr)
 {
-	unsigned int mask = 1 << (nr & 7);
-	unsigned int oldval;
+	unsigned long mask = BIT_MASK(nr);
+	unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr);
+	unsigned long old = *p;
 
-	oldval = ((unsigned char *) addr)[nr >> 3];
-	((unsigned char *) addr)[nr >> 3] = oldval | mask;
-	return oldval & mask;
+	*p = old | mask;
+	return (old & mask) != 0;
 }
 
-extern int test_and_clear_bit(int nr, volatile void * addr);
+static inline int test_and_set_bit(int nr, volatile void *addr)
+{
+	unsigned long flags;
+	int out;
+
+	local_irq_save(flags);
+	out = __test_and_set_bit(nr, addr);
+	local_irq_restore(flags);
+
+	return out;
+}
 
 static inline int __test_and_clear_bit(int nr, volatile void *addr)
 {
-	unsigned int mask = 1 << (nr & 7);
-	unsigned int oldval;
+	unsigned long mask = BIT_MASK(nr);
+	unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr);
+	unsigned long old = *p;
 
-	oldval = ((unsigned char *) addr)[nr >> 3];
-	((unsigned char *) addr)[nr >> 3] = oldval & ~mask;
-	return oldval & mask;
+	*p = old & ~mask;
+	return (old & mask) != 0;
+}
+
+static inline int test_and_clear_bit(int nr, volatile void *addr)
+{
+	unsigned long flags;
+	int out;
+
+	local_irq_save(flags);
+	out = __test_and_clear_bit(nr, addr);
+	local_irq_restore(flags);
+
+	return out;
 }
 
 extern int test_and_change_bit(int nr, volatile void * addr);
 
 static inline int __test_and_change_bit(int nr, volatile void *addr)
 {
-	unsigned int mask = 1 << (nr & 7);
-	unsigned int oldval;
+	unsigned long mask = BIT_MASK(nr);
+	unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr);
+	unsigned long old = *p;
 
-	oldval = ((unsigned char *) addr)[nr >> 3];
-	((unsigned char *) addr)[nr >> 3] = oldval ^ mask;
-	return oldval & mask;
+	*p = old ^ mask;
+	return (old & mask) != 0;
 }
 
 extern int find_first_zero_bit(void * addr, unsigned size);
@@ -110,14 +125,6 @@ static inline unsigned long ffz(unsigned long word)
 }
 
 /*
- * ffs: find first bit set. This is defined the same way as
- * the libc and compiler builtin ffs routines, therefore
- * differs in spirit from the above ffz (man ffs).
- */
-
-#define ffs(x) generic_ffs(x)
-
-/*
  * hweightN: returns the hamming weight (i.e. the number
  * of bits set) of a N-bit word
  */
diff --git a/include/asm-arm/proc-armv/system.h b/include/asm-arm/proc-armv/system.h
index e7b0fe6..b4cfa68 100644
--- a/include/asm-arm/proc-armv/system.h
+++ b/include/asm-arm/proc-armv/system.h
@@ -12,36 +12,6 @@
 
 #include <linux/config.h>
 
-#define set_cr(x)					\
-	__asm__ __volatile__(				\
-	"mcr	p15, 0, %0, c1, c0	@ set CR"	\
-	: : "r" (x))
-
-#define CR_M	(1 << 0)	/* MMU enable				*/
-#define CR_A	(1 << 1)	/* Alignment abort enable		*/
-#define CR_C	(1 << 2)	/* Dcache enable			*/
-#define CR_W	(1 << 3)	/* Write buffer enable			*/
-#define CR_P	(1 << 4)	/* 32-bit exception handler		*/
-#define CR_D	(1 << 5)	/* 32-bit data address range		*/
-#define CR_L	(1 << 6)	/* Implementation defined		*/
-#define CD_B	(1 << 7)	/* Big endian				*/
-#define CR_S	(1 << 8)	/* System MMU protection		*/
-#define CD_R	(1 << 9)	/* ROM MMU protection			*/
-#define CR_F	(1 << 10)	/* Implementation defined		*/
-#define CR_Z	(1 << 11)	/* Implementation defined		*/
-#define CR_I	(1 << 12)	/* Icache enable			*/
-#define CR_V	(1 << 13)	/* Vectors relocated to 0xffff0000	*/
-#define CR_RR	(1 << 14)	/* Round Robin cache replacement	*/
-
-extern unsigned long cr_no_alignment;	/* defined in entry-armv.S */
-extern unsigned long cr_alignment;	/* defined in entry-armv.S */
-
-#if __LINUX_ARM_ARCH__ >= 4
-#define vectors_base()	((cr_alignment & CR_V) ? 0xffff0000 : 0)
-#else
-#define vectors_base()	(0)
-#endif
-
 /*
  * Save the current interrupt enable state & disable IRQs
  */
diff --git a/include/configs/mx35_3stack.h b/include/configs/mx35_3stack.h
index b2fb714..789424e 100644
--- a/include/configs/mx35_3stack.h
+++ b/include/configs/mx35_3stack.h
@@ -35,6 +35,10 @@
 #define CONFIG_DISPLAY_CPUINFO
 #define CONFIG_DISPLAY_BOARDINFO
 
+#define CONFIG_FLASH_HEADER     1
+#define CONFIG_FLASH_HEADER_OFFSET 0x400
+#define CONFIG_FLASH_HEADER_BARKER 0xB1
+
 #define BOARD_LATE_INIT
 /*
  * Disabled for now due to build problems under Debian and a significant increase
diff --git a/include/configs/mx51_3stack_android.h b/include/configs/mx51_3stack_android.h
index bed1200..ed0611b 100644
--- a/include/configs/mx51_3stack_android.h
+++ b/include/configs/mx51_3stack_android.h
@@ -58,7 +58,7 @@
 /*
  * Size of malloc() pool
  */
-#define CONFIG_SYS_MALLOC_LEN		(CONFIG_ENV_SIZE + 2 * 1024 * 1024)
+#define CONFIG_SYS_MALLOC_LEN		(CONFIG_ENV_SIZE + 4 * 1024 * 1024)
 /* size in bytes reserved for initial data */
 #define CONFIG_SYS_GBL_DATA_SIZE	128
 
@@ -90,12 +90,17 @@
 #define CONFIG_CMD_MII
 #define CONFIG_CMD_NET
 #define CONFIG_NET_RETRY_COUNT	100
-/*
+
 #define CONFIG_CMD_UBI
 #define CONFIG_CMD_UBIFS
+#define CONFIG_CMD_MTDPARTS
+#define CONFIG_MTD_DEVICE
+#define CONFIG_MTD_PARTITIONS
+#define MTDIDS_DEFAULT "nand0=nand0"
+#define MTDPARTS_DEFAULT "mtdparts=nand0:0x700000@0x0(BOOT),0x100000@0x700000(MISC),0x1400000@0x800000(RECOVERY),-@0x1c00000(ROOT)"
+#define MTD_ACTIVE_PART "nand0,3"
 #define CONFIG_RBTREE
 #define CONFIG_LZO
-*/
 
 /*
  * Android support Configs
@@ -125,7 +130,8 @@
 #define CONFIG_ANDROID_RECOVERY_CMD_FILE "/recovery/command"
 #define CONFIG_ANDROID_BOOTMOD_DELAY 3
 #define CONFIG_ANDROID_CACHE_PARTITION_MMC 6
-#define CONFIG_ANDROID_CACHE_PARTITION_NAND 2
+#define CONFIG_ANDROID_UBIFS_PARTITION_NM  "ROOT"
+#define CONFIG_ANDROID_CACHE_PARTITION_NAND "cache"
 
 /* allow to overwrite serial and ethaddr */
 #define CONFIG_ENV_OVERWRITE
@@ -172,8 +178,8 @@
 		"bootcmd_net=run bootargs_base bootargs_nfs; "		\
 			"tftpboot ${loadaddr} ${kernel}; bootm\0"	\
 		"bootcmd_android=run bootargs_base bootargs_android; "	\
-			"mmcinit;cp.b 0x100000 ${loadaddr} 0x250000; "	\
-			"cp.b 0x400000 ${rd_loadaddr} 0x4B000; "	\
+			"mmc read 0 ${loadaddr} 0x800 0x1280; "	\
+			"mmc read 0 ${rd_loadaddr} 0x2000 0x258; "	\
 			"bootm ${loadaddr} ${rd_loadaddr}\0"		\
 		"prg_uboot=tftpboot ${loadaddr} ${uboot}; "		\
 			"protect off ${uboot_addr} 0xa003ffff; "	\
diff --git a/include/linux/bitops.h b/include/linux/bitops.h
index 7d41ae6..e724310 100644
--- a/include/linux/bitops.h
+++ b/include/linux/bitops.h
@@ -1,6 +1,7 @@
 #ifndef _LINUX_BITOPS_H
 #define _LINUX_BITOPS_H
 
+#include <asm/types.h>
 
 /*
  * ffs: find first bit set. This is defined the same way as
@@ -37,6 +38,43 @@ static inline int generic_ffs(int x)
 	return r;
 }
 
+/**
+ * fls - find last (most-significant) bit set
+ * @x: the word to search
+ *
+ * This is defined the same way as ffs.
+ * Note fls(0) = 0, fls(1) = 1, fls(0x80000000) = 32.
+ */
+static inline int generic_fls(int x)
+{
+	int r = 32;
+
+	if (!x)
+		return 0;
+	if (!(x & 0xffff0000u)) {
+		x <<= 16;
+		r -= 16;
+	}
+	if (!(x & 0xff000000u)) {
+		x <<= 8;
+		r -= 8;
+	}
+	if (!(x & 0xf0000000u)) {
+		x <<= 4;
+		r -= 4;
+	}
+	if (!(x & 0xc0000000u)) {
+		x <<= 2;
+		r -= 2;
+	}
+	if (!(x & 0x80000000u)) {
+		x <<= 1;
+		r -= 1;
+	}
+	return r;
+}
+
+
 /*
  * hweightN: returns the hamming weight (i.e. the number
  * of bits set) of a N-bit word
@@ -66,7 +104,52 @@ static inline unsigned int generic_hweight8(unsigned int w)
 	return (res & 0x0F) + ((res >> 4) & 0x0F);
 }
 
+#define BIT_MASK(nr)		(1UL << ((nr) % BITS_PER_LONG))
+#define BIT_WORD(nr)		((nr) / BITS_PER_LONG)
+
 #include <asm/bitops.h>
 
+/* linux/include/asm-generic/bitops/non-atomic.h */
+
+#ifndef PLATFORM__SET_BIT
+# define __set_bit generic_set_bit
+#endif
+
+#ifndef PLATFORM__CLEAR_BIT
+# define __clear_bit generic_clear_bit
+#endif
+
+#ifndef PLATFORM_FFS
+# define ffs generic_ffs
+#endif
+
+#ifndef PLATFORM_FLS
+# define fls generic_fls
+#endif
+
+/**
+ * __set_bit - Set a bit in memory
+ * @nr: the bit to set
+ * @addr: the address to start counting from
+ *
+ * Unlike set_bit(), this function is non-atomic and may be reordered.
+ * If it's called on the same region of memory simultaneously, the effect
+ * may be that only one operation succeeds.
+ */
+static inline void generic_set_bit(int nr, volatile unsigned long *addr)
+{
+	unsigned long mask = BIT_MASK(nr);
+	unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr);
+
+	*p  |= mask;
+}
+
+static inline void generic_clear_bit(int nr, volatile unsigned long *addr)
+{
+	unsigned long mask = BIT_MASK(nr);
+	unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr);
+
+	*p &= ~mask;
+}
 
 #endif