Merge branch '2020-11-18-assorted-fixes'WIP/19Nov2020

- Assorted SquashFS fixes and cleanups
- Fixes for various Coverity issues
- Various fixups to other platforms / code

26 files changed, 321 insertions, 168 deletions

diff --git a/README b/README
index cb49aa15da..7b73a1c973 100644
--- a/README
+++ b/README
@@ -3832,16 +3832,8 @@ when your kernel is intended to use an initial ramdisk:
 	Load Address: 0x00000000
 	Entry Point:  0x00000000
 
-The "dumpimage" is a tool to disassemble images built by mkimage. Its "-i"
-option performs the converse operation of the mkimage's second form (the "-d"
-option). Given an image built by mkimage, the dumpimage extracts a "data file"
-from the image:
-
-	tools/dumpimage -i image -T type -p position data_file
-	  -i ==> extract from the 'image' a specific 'data_file'
-	  -T ==> set image type to 'type'
-	  -p ==> 'position' (starting at 0) of the 'data_file' inside the 'image'
-
+The "dumpimage" tool can be used to disassemble or list the contents of images
+built by mkimage. See dumpimage's help output (-h) for details.
 
 Installing a Linux Image:
 -------------------------
diff --git a/board/armltd/vexpress/vexpress_common.c b/board/armltd/vexpress/vexpress_common.c
index 70f6cd80d5..8fea8ff352 100644
--- a/board/armltd/vexpress/vexpress_common.c
+++ b/board/armltd/vexpress/vexpress_common.c
@@ -55,7 +55,6 @@ int board_init(void)
 {
 	gd->bd->bi_boot_params = LINUX_BOOT_PARAM_ADDR;
 	gd->bd->bi_arch_number = MACH_TYPE_VEXPRESS;
-	gd->flags = 0;
 
 	icache_enable();
 	flash__init();
diff --git a/board/keymile/km83xx/Kconfig b/board/keymile/km83xx/Kconfig
index bbafabdcb2..8247ae39d3 100644
--- a/board/keymile/km83xx/Kconfig
+++ b/board/keymile/km83xx/Kconfig
@@ -15,6 +15,12 @@ config KM_ENABLE_FULL_DM_DTS_SUPPORT
 	select PHYLIB
 endmenu
 
+config SYS_MEMTEST_START
+	default 0x00100000
+
+config SYS_MEMTEST_END
+	default 0x00f00000
+
 if TARGET_KMETER1
 
 config SYS_BOARD
diff --git a/board/keymile/km83xx/km83xx.c b/board/keymile/km83xx/km83xx.c
index 9eb000cca4..a984165e24 100644
--- a/board/keymile/km83xx/km83xx.c
+++ b/board/keymile/km83xx/km83xx.c
@@ -236,12 +236,8 @@ void post_word_store(ulong value)
 
 int arch_memory_test_prepare(u32 *vstart, u32 *size, phys_addr_t *phys_offset)
 {
-	/*
-	 * These match CONFIG_SYS_MEMTEST_START and
-	 * (CONFIG_SYS_MEMTEST_END - CONFIG_SYS_MEMTEST_START)
-	 */
-	*vstart = 0x00100000;
-	*size = 0xe00000;
+	*vstart = CONFIG_SYS_MEMTEST_START;
+	*size = CONFIG_SYS_MEMTEST_END - CONFIG_SYS_MEMTEST_START;
 	debug("arch_memory_test_prepare 0x%08X 0x%08X\n", *vstart, *size);
 
 	return 0;
diff --git a/board/keymile/scripts/develop-arm.txt b/board/keymile/scripts/develop-arm.txt
index d3c974f1f9..4c12d3e1c4 100644
--- a/board/keymile/scripts/develop-arm.txt
+++ b/board/keymile/scripts/develop-arm.txt
@@ -1 +1 @@
-setup_debug_env=tftpboot 0x200000 scripts/develop-common.txt && env import -t 0x200000 ${filesize} && run configure
+setup_debug_env=tftpboot ${load_addr_r} scripts/develop-common.txt && env import -t ${load_addr_r} ${filesize} && run configure
diff --git a/board/keymile/scripts/develop-common.txt b/board/keymile/scripts/develop-common.txt
index f77a26abe8..4384c0da30 100644
--- a/board/keymile/scripts/develop-common.txt
+++ b/board/keymile/scripts/develop-common.txt
@@ -9,4 +9,4 @@ toolchain=/opt/eldk
 rootfssize=0
 set_uimage=printenv uimage || setenv uimage uImage
 set_tftppath=if test ${hostname} = kmcoge5un; then setenv tftppath CI5UN; else if test ${hostname} = kmcoge5ne; then setenv tftppath CI5NE; else setenv tftppath ${IVM_Symbol}; fi; fi
-try_import_nfs_path=if tftpboot 0x200000 ${tftppath}/nfs-path.txt; then env import -t 0x200000 ${filesize}; else echo no auto nfs path imported; echo you can set nfsargs in /tftpboot/${tftppath}/nfs-path.txt and rerun develop; fi
+try_import_nfs_path=if tftpboot ${load_addr_r} ${tftppath}/nfs-path.txt; then env import -t ${load_addr_r} ${filesize}; else echo no auto nfs path imported; echo you can set nfsargs in /tftpboot/${tftppath}/nfs-path.txt and rerun develop; fi
diff --git a/board/keymile/scripts/develop-ppc_82xx.txt b/board/keymile/scripts/develop-ppc_82xx.txt
index d3c974f1f9..4c12d3e1c4 100644
--- a/board/keymile/scripts/develop-ppc_82xx.txt
+++ b/board/keymile/scripts/develop-ppc_82xx.txt
@@ -1 +1 @@
-setup_debug_env=tftpboot 0x200000 scripts/develop-common.txt && env import -t 0x200000 ${filesize} && run configure
+setup_debug_env=tftpboot ${load_addr_r} scripts/develop-common.txt && env import -t ${load_addr_r} ${filesize} && run configure
diff --git a/board/keymile/scripts/develop-ppc_8xx.txt b/board/keymile/scripts/develop-ppc_8xx.txt
index d3c974f1f9..4c12d3e1c4 100644
--- a/board/keymile/scripts/develop-ppc_8xx.txt
+++ b/board/keymile/scripts/develop-ppc_8xx.txt
@@ -1 +1 @@
-setup_debug_env=tftpboot 0x200000 scripts/develop-common.txt && env import -t 0x200000 ${filesize} && run configure
+setup_debug_env=tftpboot ${load_addr_r} scripts/develop-common.txt && env import -t ${load_addr_r} ${filesize} && run configure
diff --git a/board/keymile/scripts/ramfs-arm.txt b/board/keymile/scripts/ramfs-arm.txt
index 87e984e179..93f87fabab 100644
--- a/board/keymile/scripts/ramfs-arm.txt
+++ b/board/keymile/scripts/ramfs-arm.txt
@@ -1 +1 @@
-setup_debug_env=tftpboot 0x200000 scripts/ramfs-common.txt && env import -t 0x200000 ${filesize} && run configure
+setup_debug_env=tftpboot ${load_addr_r} scripts/ramfs-common.txt && env import -t ${load_addr_r} ${filesize} && run configure
diff --git a/board/keymile/scripts/ramfs-common.txt b/board/keymile/scripts/ramfs-common.txt
index 290c602aab..e590a2bee6 100644
--- a/board/keymile/scripts/ramfs-common.txt
+++ b/board/keymile/scripts/ramfs-common.txt
@@ -12,4 +12,4 @@ tftpkernel=tftpboot ${load_addr_r} ${tftppath}/${uimage}
 tftpramfs=tftpboot ${rootfsaddr} ${tftppath}/rootfsImage
 set_uimage=printenv uimage || setenv uimage uImage
 set_tftppath=if test ${hostname} = kmcoge5un; then setenv tftppath CI5UN; else if test ${hostname} = kmcoge5ne; then setenv tftppath CI5NE; else setenv tftppath ${IVM_Symbol}; fi; fi
-try_import_rootfssize=if tftpboot 0x200000 ${tftppath}/rootfssize.txt; then env import -t 0x200000 ${filesize}; else echo no auto rootfs size; echo you can set rootfssize in /tftpboot/${tftppath}/rootfssize.txt and rerun ramfs; fi
+try_import_rootfssize=if tftpboot ${load_addr_r} ${tftppath}/rootfssize.txt; then env import -t ${load_addr_r} ${filesize}; else echo no auto rootfs size; echo you can set rootfssize in /tftpboot/${tftppath}/rootfssize.txt and rerun ramfs; fi
diff --git a/board/keymile/scripts/ramfs-ppc_82xx.txt b/board/keymile/scripts/ramfs-ppc_82xx.txt
index 87e984e179..93f87fabab 100644
--- a/board/keymile/scripts/ramfs-ppc_82xx.txt
+++ b/board/keymile/scripts/ramfs-ppc_82xx.txt
@@ -1 +1 @@
-setup_debug_env=tftpboot 0x200000 scripts/ramfs-common.txt && env import -t 0x200000 ${filesize} && run configure
+setup_debug_env=tftpboot ${load_addr_r} scripts/ramfs-common.txt && env import -t ${load_addr_r} ${filesize} && run configure
diff --git a/board/keymile/scripts/ramfs-ppc_8xx.txt b/board/keymile/scripts/ramfs-ppc_8xx.txt
index 87e984e179..93f87fabab 100644
--- a/board/keymile/scripts/ramfs-ppc_8xx.txt
+++ b/board/keymile/scripts/ramfs-ppc_8xx.txt
@@ -1 +1 @@
-setup_debug_env=tftpboot 0x200000 scripts/ramfs-common.txt && env import -t 0x200000 ${filesize} && run configure
+setup_debug_env=tftpboot ${load_addr_r} scripts/ramfs-common.txt && env import -t ${load_addr_r} ${filesize} && run configure
diff --git a/common/common_fit.c b/common/common_fit.c
index a993308100..219674d467 100644
--- a/common/common_fit.c
+++ b/common/common_fit.c
@@ -67,7 +67,7 @@ int fit_find_config_node(const void *fdt)
 		if (board_fit_config_name_match(name))
 			continue;
 
-		debug("Selecting config '%s'", name);
+		debug("Selecting config '%s'\n", name);
 
 		return node;
 	}
diff --git a/drivers/led/led_bcm6858.c b/drivers/led/led_bcm6858.c
index b415d8b2b4..511185ffad 100644
--- a/drivers/led/led_bcm6858.c
+++ b/drivers/led/led_bcm6858.c
@@ -40,8 +40,8 @@
 #define LED_FLASH_RATE_CONTROL_REG0	0x10
 /* Soft LED input register */
 #define LED_SW_LED_IP_REG		0xb8
-/* Soft LED input polarity register */
-#define LED_SW_LED_IP_PPOL_REG		0xbc
+/* Parallel LED Output Polarity Register */
+#define LED_PLED_OP_PPOL_REG		0xc0
 
 struct bcm6858_led_priv {
 	void __iomem *regs;
@@ -198,9 +198,9 @@ static int bcm6858_led_probe(struct udevice *dev)
 
 		/* configure the polarity */
 		if (dev_read_bool(dev, "active-low"))
-			clrbits_32(regs + LED_SW_LED_IP_PPOL_REG, 1 << pin);
+			clrbits_32(regs + LED_PLED_OP_PPOL_REG, 1 << pin);
 		else
-			setbits_32(regs + LED_SW_LED_IP_PPOL_REG, 1 << pin);
+			setbits_32(regs + LED_PLED_OP_PPOL_REG, 1 << pin);
 	}
 
 	return 0;
diff --git a/env/mmc.c b/env/mmc.c
index 4e67180b23..ee376c3e0c 100644
--- a/env/mmc.c
+++ b/env/mmc.c
@@ -42,7 +42,7 @@ static inline int mmc_offset_try_partition(const char *str, int copy, s64 *val)
 		if (ret < 0)
 			return ret;
 
-		if (!strncmp((const char *)info.name, str, sizeof(str)))
+		if (!strncmp((const char *)info.name, str, sizeof(info.name)))
 			break;
 	}
 
diff --git a/env/nowhere.c b/env/nowhere.c
index d33fdf27d0..d43a2d6b51 100644
--- a/env/nowhere.c
+++ b/env/nowhere.c
@@ -30,7 +30,7 @@ static int env_nowhere_init(void)
 static int env_nowhere_load(void)
 {
 	/*
-	 * for SPL, set env_valid = ENV_INVALID is enougth as env_get_char()
+	 * for SPL, set env_valid = ENV_INVALID is enough as env_get_char()
 	 * return the default env if env_get is used
 	 * and SPL don't used env_import to reduce its size
 	 * For U-Boot proper, import the default environment to allow reload.
diff --git a/fs/btrfs/btrfs.c b/fs/btrfs/btrfs.c
index e48972ffa2..346b2c4341 100644
--- a/fs/btrfs/btrfs.c
+++ b/fs/btrfs/btrfs.c
@@ -36,7 +36,7 @@ static int show_dir(struct btrfs_root *root, struct extent_buffer *eb,
 	char *target = NULL;
 	char filetime[32];
 	time_t mtime;
-	int ret;
+	int ret = 0;
 
 	btrfs_dir_item_key_to_cpu(eb, di, &key);
 
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index ff330280e0..019d532a1a 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -251,7 +251,7 @@ int btrfs_lookup_path(struct btrfs_root *root, u64 ino, const char *filename,
 	const char *cur = filename;
 	u64 next_ino;
 	u8 next_type;
-	u8 type;
+	u8 type = BTRFS_FT_UNKNOWN;
 	int len;
 	int ret = 0;
 
@@ -335,6 +335,10 @@ next:
 		cur += len;
 	}
 
+	/* We haven't found anything, but still get no error? */
+	if (type == BTRFS_FT_UNKNOWN && !ret)
+		ret = -EUCLEAN;
+
 	if (!ret) {
 		*root_ret = root;
 		*ino_ret = ino;
diff --git a/fs/fs.c b/fs/fs.c
index 29ad4d1a69..7a4020607a 100644
--- a/fs/fs.c
+++ b/fs/fs.c
@@ -287,6 +287,7 @@ static struct fstype_info fstypes[] = {
 	{
 		.fstype = FS_TYPE_SQUASHFS,
 		.name = "squashfs",
+		.null_dev_desc_ok = false,
 		.probe = sqfs_probe,
 		.opendir = sqfs_opendir,
 		.readdir = sqfs_readdir,
@@ -295,6 +296,12 @@ static struct fstype_info fstypes[] = {
 		.size = sqfs_size,
 		.close = sqfs_close,
 		.closedir = sqfs_closedir,
+		.exists = sqfs_exists,
+		.uuid = fs_uuid_unsupported,
+		.write = fs_write_unsupported,
+		.ln = fs_ln_unsupported,
+		.unlink = fs_unlink_unsupported,
+		.mkdir = fs_mkdir_unsupported,
 	},
 #endif
 	{
diff --git a/fs/squashfs/sqfs.c b/fs/squashfs/sqfs.c
index 15208b4dab..608a2bb454 100644
--- a/fs/squashfs/sqfs.c
+++ b/fs/squashfs/sqfs.c
@@ -106,6 +106,10 @@ static int sqfs_frag_lookup(u32 inode_fragment_index,
 	int block, offset, ret;
 	u16 header;
 
+	metadata_buffer = NULL;
+	entries = NULL;
+	table = NULL;
+
 	if (inode_fragment_index >= get_unaligned_le32(&sblk->fragments))
 		return -EINVAL;
 
@@ -117,12 +121,14 @@ static int sqfs_frag_lookup(u32 inode_fragment_index,
 
 	/* Allocate a proper sized buffer to store the fragment index table */
 	table = malloc_cache_aligned(n_blks * ctxt.cur_dev->blksz);
-	if (!table)
-		return -ENOMEM;
+	if (!table) {
+		ret = -ENOMEM;
+		goto out;
+	}
 
 	if (sqfs_disk_read(start, n_blks, table) < 0) {
-		free(table);
-		return -EINVAL;
+		ret = -EINVAL;
+		goto out;
 	}
 
 	block = SQFS_FRAGMENT_INDEX(inode_fragment_index);
@@ -142,12 +148,12 @@ static int sqfs_frag_lookup(u32 inode_fragment_index,
 	metadata_buffer = malloc_cache_aligned(n_blks * ctxt.cur_dev->blksz);
 	if (!metadata_buffer) {
 		ret = -ENOMEM;
-		goto free_table;
+		goto out;
 	}
 
 	if (sqfs_disk_read(start, n_blks, metadata_buffer) < 0) {
 		ret = -EINVAL;
-		goto free_buffer;
+		goto out;
 	}
 
 	/* Every metadata block starts with a 16-bit header */
@@ -156,13 +162,13 @@ static int sqfs_frag_lookup(u32 inode_fragment_index,
 
 	if (!metadata || !header) {
 		ret = -ENOMEM;
-		goto free_buffer;
+		goto out;
 	}
 
 	entries = malloc(SQFS_METADATA_BLOCK_SIZE);
 	if (!entries) {
 		ret = -ENOMEM;
-		goto free_buffer;
+		goto out;
 	}
 
 	if (SQFS_COMPRESSED_METADATA(header)) {
@@ -172,7 +178,7 @@ static int sqfs_frag_lookup(u32 inode_fragment_index,
 				      src_len);
 		if (ret) {
 			ret = -EINVAL;
-			goto free_entries;
+			goto out;
 		}
 	} else {
 		memcpy(entries, metadata, SQFS_METADATA_SIZE(header));
@@ -181,11 +187,9 @@ static int sqfs_frag_lookup(u32 inode_fragment_index,
 	*e = entries[offset];
 	ret = SQFS_COMPRESSED_BLOCK(e->size);
 
-free_entries:
+out:
 	free(entries);
-free_buffer:
 	free(metadata_buffer);
-free_table:
 	free(table);
 
 	return ret;
@@ -242,6 +246,9 @@ static char *sqfs_concat_tokens(char **token_list, int token_count)
 	length = sqfs_get_tokens_length(token_list, token_count);
 
 	result = malloc(length + 1);
+	if (!result)
+		return NULL;
+
 	result[length] = '\0';
 
 	for (i = 0; i < token_count; i++) {
@@ -333,28 +340,31 @@ static char *sqfs_get_abs_path(const char *base, const char *rel)
 	char **base_tokens, **rel_tokens, *resolved = NULL;
 	int ret, bc, rc, i, updir = 0, resolved_size = 0, offset = 0;
 
+	base_tokens = NULL;
+	rel_tokens = NULL;
+
 	/* Memory allocation for the token lists */
 	bc = sqfs_count_tokens(base);
 	rc = sqfs_count_tokens(rel);
 	if (bc < 1 || rc < 1)
 		return NULL;
 
-	base_tokens = malloc(bc * sizeof(char *));
+	base_tokens = calloc(bc, sizeof(char *));
 	if (!base_tokens)
 		return NULL;
 
-	rel_tokens = malloc(rc * sizeof(char *));
+	rel_tokens = calloc(rc, sizeof(char *));
 	if (!rel_tokens)
-		goto free_b_tokens;
+		goto out;
 
 	/* Fill token lists */
 	ret = sqfs_tokenize(base_tokens, bc, base);
 	if (ret)
-		goto free_r_tokens;
+		goto out;
 
-	sqfs_tokenize(rel_tokens, rc, rel);
+	ret = sqfs_tokenize(rel_tokens, rc, rel);
 	if (ret)
-		goto free_r_tokens;
+		goto out;
 
 	/* count '..' occurrences in target path */
 	for (i = 0; i < rc; i++) {
@@ -365,7 +375,7 @@ static char *sqfs_get_abs_path(const char *base, const char *rel)
 	/* Remove the last token and the '..' occurrences */
 	bc = sqfs_clean_base_path(base_tokens, bc, updir);
 	if (bc < 0)
-		goto free_r_tokens;
+		goto out;
 
 	/* Calculate resolved path size */
 	if (!bc)
@@ -376,7 +386,7 @@ static char *sqfs_get_abs_path(const char *base, const char *rel)
 
 	resolved = malloc(resolved_size + 1);
 	if (!resolved)
-		goto free_r_tokens_loop;
+		goto out;
 
 	/* Set resolved path */
 	memset(resolved, '\0', resolved_size + 1);
@@ -384,14 +394,15 @@ static char *sqfs_get_abs_path(const char *base, const char *rel)
 	resolved[offset++] = '/';
 	offset += sqfs_join(rel_tokens, resolved + offset, updir, rc, '/');
 
-free_r_tokens_loop:
-	for (i = 0; i < rc; i++)
-		free(rel_tokens[i]);
-	for (i = 0; i < bc; i++)
-		free(base_tokens[i]);
-free_r_tokens:
+out:
+	if (rel_tokens)
+		for (i = 0; i < rc; i++)
+			free(rel_tokens[i]);
+	if (base_tokens)
+		for (i = 0; i < bc; i++)
+			free(base_tokens[i]);
+
 	free(rel_tokens);
-free_b_tokens:
 	free(base_tokens);
 
 	return resolved;
@@ -434,7 +445,7 @@ static int sqfs_search_dir(struct squashfs_dir_stream *dirs, char **token_list,
 {
 	struct squashfs_super_block *sblk = ctxt.sblk;
 	char *path, *target, **sym_tokens, *res, *rem;
-	int j, ret, new_inode_number, offset;
+	int j, ret = 0, new_inode_number, offset;
 	struct squashfs_symlink_inode *sym;
 	struct squashfs_ldir_inode *ldir;
 	struct squashfs_dir_inode *dir;
@@ -442,6 +453,12 @@ static int sqfs_search_dir(struct squashfs_dir_stream *dirs, char **token_list,
 	struct fs_dirent *dent;
 	unsigned char *table;
 
+	res = NULL;
+	rem = NULL;
+	path = NULL;
+	target = NULL;
+	sym_tokens = NULL;
+
 	dirsp = (struct fs_dir_stream *)dirs;
 
 	/* Start by root inode */
@@ -477,7 +494,8 @@ static int sqfs_search_dir(struct squashfs_dir_stream *dirs, char **token_list,
 	for (j = 0; j < token_count; j++) {
 		if (!sqfs_is_dir(get_unaligned_le16(&dir->inode_type))) {
 			printf("** Cannot find directory. **\n");
-			return -EINVAL;
+			ret = -EINVAL;
+			goto out;
 		}
 
 		while (!sqfs_readdir(dirsp, &dent)) {
@@ -485,11 +503,13 @@ static int sqfs_search_dir(struct squashfs_dir_stream *dirs, char **token_list,
 			if (!ret)
 				break;
 			free(dirs->entry);
+			dirs->entry = NULL;
 		}
 
 		if (ret) {
 			printf("** Cannot find directory. **\n");
-			return -EINVAL;
+			ret = -EINVAL;
+			goto out;
 		}
 
 		/* Redefine inode as the found token */
@@ -506,38 +526,63 @@ static int sqfs_search_dir(struct squashfs_dir_stream *dirs, char **token_list,
 			sym = (struct squashfs_symlink_inode *)table;
 			/* Get first j + 1 tokens */
 			path = sqfs_concat_tokens(token_list, j + 1);
+			if (!path) {
+				ret = -ENOMEM;
+				goto out;
+			}
 			/* Resolve for these tokens */
 			target = sqfs_resolve_symlink(sym, path);
+			if (!target) {
+				ret = -ENOMEM;
+				goto out;
+			}
 			/* Join remaining tokens */
 			rem = sqfs_concat_tokens(token_list + j + 1, token_count -
 						 j - 1);
+			if (!rem) {
+				ret = -ENOMEM;
+				goto out;
+			}
 			/* Concatenate remaining tokens and symlink's target */
 			res = malloc(strlen(rem) + strlen(target) + 1);
+			if (!res) {
+				ret = -ENOMEM;
+				goto out;
+			}
 			strcpy(res, target);
 			res[strlen(target)] = '/';
 			strcpy(res + strlen(target) + 1, rem);
 			token_count = sqfs_count_tokens(res);
 
-			if (token_count < 0)
-				return -EINVAL;
+			if (token_count < 0) {
+				ret = -EINVAL;
+				goto out;
+			}
 
 			sym_tokens = malloc(token_count * sizeof(char *));
-			if (!sym_tokens)
-				return -EINVAL;
+			if (!sym_tokens) {
+				ret = -EINVAL;
+				goto out;
+			}
 
 			/* Fill tokens list */
 			ret = sqfs_tokenize(sym_tokens, token_count, res);
-			if (ret)
-				return -EINVAL;
+			if (ret) {
+				ret = -EINVAL;
+				goto out;
+			}
 			free(dirs->entry);
+			dirs->entry = NULL;
 
 			ret = sqfs_search_dir(dirs, sym_tokens, token_count,
 					      m_list, m_count);
-			return ret;
+			goto out;
 		} else if (!sqfs_is_dir(get_unaligned_le16(&dir->inode_type))) {
 			printf("** Cannot find directory. **\n");
 			free(dirs->entry);
-			return -EINVAL;
+			dirs->entry = NULL;
+			ret = -EINVAL;
+			goto out;
 		}
 
 		/* Check if it is an extended dir. */
@@ -556,7 +601,9 @@ static int sqfs_search_dir(struct squashfs_dir_stream *dirs, char **token_list,
 		if (sqfs_is_empty_dir(table)) {
 			printf("Empty directory.\n");
 			free(dirs->entry);
-			return SQFS_EMPTY_DIR;
+			dirs->entry = NULL;
+			ret = SQFS_EMPTY_DIR;
+			goto out;
 		}
 
 		dirs->table += SQFS_DIR_HEADER_SIZE;
@@ -564,6 +611,7 @@ static int sqfs_search_dir(struct squashfs_dir_stream *dirs, char **token_list,
 		dirs->entry_count = dirs->dir_header->count + 1;
 		dirs->size -= SQFS_DIR_HEADER_SIZE;
 		free(dirs->entry);
+		dirs->entry = NULL;
 	}
 
 	offset = sqfs_dir_offset(table, m_list, m_count);
@@ -574,7 +622,13 @@ static int sqfs_search_dir(struct squashfs_dir_stream *dirs, char **token_list,
 	else
 		memcpy(&dirs->i_ldir, ldir, sizeof(*ldir));
 
-	return 0;
+out:
+	free(res);
+	free(rem);
+	free(path);
+	free(target);
+	free(sym_tokens);
+	return ret;
 }
 
 /*
@@ -688,6 +742,7 @@ static int sqfs_read_inode_table(unsigned char **inode_table)
 					      src_table, src_len);
 			if (ret) {
 				free(*inode_table);
+				*inode_table = NULL;
 				goto free_itb;
 			}
 
@@ -722,6 +777,8 @@ static int sqfs_read_directory_table(unsigned char **dir_table, u32 **pos_list)
 	unsigned long dest_len = 0;
 	bool compressed;
 
+	*dir_table = NULL;
+	*pos_list = NULL;
 	/* DIRECTORY TABLE */
 	table_size = get_unaligned_le64(&sblk->fragment_table_start) -
 		get_unaligned_le64(&sblk->directory_table_start);
@@ -736,35 +793,31 @@ static int sqfs_read_directory_table(unsigned char **dir_table, u32 **pos_list)
 		return -ENOMEM;
 
 	if (sqfs_disk_read(start, n_blks, dtb) < 0)
-		goto free_dtb;
+		goto out;
 
 	/* Parse directory table (metadata block) header */
 	ret = sqfs_read_metablock(dtb, table_offset, &compressed, &src_len);
 	if (ret)
-		goto free_dtb;
+		goto out;
 
 	/* Calculate total size to store the whole decompressed table */
 	metablks_count = sqfs_count_metablks(dtb, table_offset, table_size);
 	if (metablks_count < 1)
-		goto free_dtb;
+		goto out;
 
 	*dir_table = malloc(metablks_count * SQFS_METADATA_BLOCK_SIZE);
 	if (!*dir_table)
-		goto free_dtb;
+		goto out;
 
 	*pos_list = malloc(metablks_count * sizeof(u32));
-	if (!*pos_list) {
-		free(*dir_table);
-		goto free_dtb;
-	}
+	if (!*pos_list)
+		goto out;
 
 	ret = sqfs_get_metablk_pos(*pos_list, dtb, table_offset,
 				   metablks_count);
 	if (ret) {
 		metablks_count = -1;
-		free(*dir_table);
-		free(*pos_list);
-		goto free_dtb;
+		goto out;
 	}
 
 	src_table = dtb + table_offset + SQFS_HEADER_SIZE;
@@ -780,8 +833,7 @@ static int sqfs_read_directory_table(unsigned char **dir_table, u32 **pos_list)
 					      &dest_len, src_table, src_len);
 			if (ret) {
 				metablks_count = -1;
-				free(*dir_table);
-				goto free_dtb;
+				goto out;
 			}
 
 			if (dest_len < SQFS_METADATA_BLOCK_SIZE) {
@@ -803,7 +855,13 @@ static int sqfs_read_directory_table(unsigned char **dir_table, u32 **pos_list)
 		src_table += src_len + SQFS_HEADER_SIZE;
 	}
 
-free_dtb:
+out:
+	if (metablks_count < 1) {
+		free(*dir_table);
+		free(*pos_list);
+		*dir_table = NULL;
+		*pos_list = NULL;
+	}
 	free(dtb);
 
 	return metablks_count;
@@ -812,42 +870,57 @@ free_dtb:
 int sqfs_opendir(const char *filename, struct fs_dir_stream **dirsp)
 {
 	unsigned char *inode_table = NULL, *dir_table = NULL;
-	int j, token_count, ret = 0, metablks_count;
+	int j, token_count = 0, ret = 0, metablks_count;
 	struct squashfs_dir_stream *dirs;
-	char **token_list, *path;
+	char **token_list = NULL, *path = NULL;
 	u32 *pos_list = NULL;
 
 	dirs = malloc(sizeof(*dirs));
 	if (!dirs)
 		return -EINVAL;
 
+	/* these should be set to NULL to prevent dangling pointers */
+	dirs->dir_header = NULL;
+	dirs->entry = NULL;
+	dirs->table = NULL;
+	dirs->inode_table = NULL;
+	dirs->dir_table = NULL;
+
 	ret = sqfs_read_inode_table(&inode_table);
-	if (ret)
-		return -EINVAL;
+	if (ret) {
+		ret = -EINVAL;
+		goto out;
+	}
 
 	metablks_count = sqfs_read_directory_table(&dir_table, &pos_list);
-	if (metablks_count < 1)
-		return -EINVAL;
+	if (metablks_count < 1) {
+		ret = -EINVAL;
+		goto out;
+	}
 
 	/* Tokenize filename */
 	token_count = sqfs_count_tokens(filename);
-	if (token_count < 0)
-		return -EINVAL;
+	if (token_count < 0) {
+		ret = -EINVAL;
+		goto out;
+	}
 
 	path = strdup(filename);
-	if (!path)
-		return -ENOMEM;
+	if (!path) {
+		ret = -EINVAL;
+		goto out;
+	}
 
 	token_list = malloc(token_count * sizeof(char *));
 	if (!token_list) {
 		ret = -EINVAL;
-		goto free_path;
+		goto out;
 	}
 
 	/* Fill tokens list */
 	ret = sqfs_tokenize(token_list, token_count, path);
 	if (ret)
-		goto free_tokens;
+		goto out;
 	/*
 	 * ldir's (extended directory) size is greater than dir, so it works as
 	 * a general solution for the malloc size, since 'i' is a union.
@@ -857,7 +930,7 @@ int sqfs_opendir(const char *filename, struct fs_dir_stream **dirsp)
 	ret = sqfs_search_dir(dirs, token_list, token_count, pos_list,
 			      metablks_count);
 	if (ret)
-		goto free_tokens;
+		goto out;
 
 	if (le16_to_cpu(dirs->i_dir.inode_type) == SQFS_DIR_TYPE)
 		dirs->size = le16_to_cpu(dirs->i_dir.file_size);
@@ -875,13 +948,16 @@ int sqfs_opendir(const char *filename, struct fs_dir_stream **dirsp)
 
 	*dirsp = (struct fs_dir_stream *)dirs;
 
-free_tokens:
+out:
 	for (j = 0; j < token_count; j++)
 		free(token_list[j]);
 	free(token_list);
 	free(pos_list);
-free_path:
 	free(path);
+	if (ret) {
+		free(inode_table);
+		free(dirs);
+	}
 
 	return ret;
 }
@@ -1009,26 +1085,28 @@ int sqfs_probe(struct blk_desc *fs_dev_desc, struct disk_partition *fs_partition
 
 	ret = sqfs_read_sblk(&sblk);
 	if (ret)
-		return ret;
+		goto error;
 
 	/* Make sure it has a valid SquashFS magic number*/
 	if (get_unaligned_le32(&sblk->s_magic) != SQFS_MAGIC_NUMBER) {
 		printf("Bad magic number for SquashFS image.\n");
-		ctxt.cur_dev = NULL;
-		return -EINVAL;
+		ret = -EINVAL;
+		goto error;
 	}
 
 	ctxt.sblk = sblk;
 
 	ret = sqfs_decompressor_init(&ctxt);
-
 	if (ret) {
-		ctxt.cur_dev = NULL;
-		free(ctxt.sblk);
-		return -EINVAL;
+		goto error;
 	}
 
 	return 0;
+error:
+	ctxt.cur_dev = NULL;
+	free(ctxt.sblk);
+	ctxt.sblk = NULL;
+	return ret;
 }
 
 static char *sqfs_basename(char *path)
@@ -1071,15 +1149,27 @@ static int sqfs_split_path(char **file, char **dir, const char *path)
 	char *dirc, *basec, *bname, *dname, *tmp_path;
 	int ret = 0;
 
+	*file = NULL;
+	*dir = NULL;
+	dirc = NULL;
+	basec = NULL;
+	bname = NULL;
+	dname = NULL;
+	tmp_path = NULL;
+
 	/* check for first slash in path*/
 	if (path[0] == '/') {
 		tmp_path = strdup(path);
-		if (!tmp_path)
-			return -ENOMEM;
+		if (!tmp_path) {
+			ret = -ENOMEM;
+			goto out;
+		}
 	} else {
 		tmp_path = malloc(strlen(path) + 2);
-		if (!tmp_path)
-			return -ENOMEM;
+		if (!tmp_path) {
+			ret = -ENOMEM;
+			goto out;
+		}
 		tmp_path[0] = '/';
 		strcpy(tmp_path + 1, path);
 	}
@@ -1088,13 +1178,13 @@ static int sqfs_split_path(char **file, char **dir, const char *path)
 	dirc = strdup(tmp_path);
 	if (!dirc) {
 		ret = -ENOMEM;
-		goto free_tmp;
+		goto out;
 	}
 
 	basec = strdup(tmp_path);
 	if (!basec) {
 		ret = -ENOMEM;
-		goto free_dirc;
+		goto out;
 	}
 
 	dname = sqfs_dirname(dirc);
@@ -1104,14 +1194,14 @@ static int sqfs_split_path(char **file, char **dir, const char *path)
 
 	if (!*file) {
 		ret = -ENOMEM;
-		goto free_basec;
+		goto out;
 	}
 
 	if (*dname == '\0') {
 		*dir = malloc(2);
 		if (!*dir) {
 			ret = -ENOMEM;
-			goto free_basec;
+			goto out;
 		}
 
 		(*dir)[0] = '/';
@@ -1120,15 +1210,19 @@ static int sqfs_split_path(char **file, char **dir, const char *path)
 		*dir = strdup(dname);
 		if (!*dir) {
 			ret = -ENOMEM;
-			goto free_basec;
+			goto out;
 		}
 	}
 
-free_basec:
+out:
+	if (ret) {
+		free(*file);
+		free(*dir);
+		*dir = NULL;
+		*file = NULL;
+	}
 	free(basec);
-free_dirc:
 	free(dirc);
-free_tmp:
 	free(tmp_path);
 
 	return ret;
@@ -1213,8 +1307,8 @@ static int sqfs_get_lregfile_info(struct squashfs_lreg_inode *lreg,
 int sqfs_read(const char *filename, void *buf, loff_t offset, loff_t len,
 	      loff_t *actread)
 {
-	char *dir, *fragment_block, *datablock = NULL, *data_buffer = NULL;
-	char *fragment, *file, *resolved, *data;
+	char *dir = NULL, *fragment_block, *datablock = NULL, *data_buffer = NULL;
+	char *fragment = NULL, *file = NULL, *resolved, *data;
 	u64 start, n_blks, table_size, data_offset, table_offset;
 	int ret, j, i_number, datablk_count = 0;
 	struct squashfs_super_block *sblk = ctxt.sblk;
@@ -1232,6 +1326,14 @@ int sqfs_read(const char *filename, void *buf, loff_t offset, loff_t len,
 
 	*actread = 0;
 
+	if (offset) {
+		/*
+		 * TODO: implement reading at an offset in file
+		 */
+		printf("Error: reading at a specific offset in a squashfs file is not supported yet.\n");
+		return -EINVAL;
+	}
+
 	/*
 	 * sqfs_opendir will uncompress inode and directory tables, and will
 	 * return a pointer to the directory that contains the requested file.
@@ -1239,8 +1341,7 @@ int sqfs_read(const char *filename, void *buf, loff_t offset, loff_t len,
 	sqfs_split_path(&file, &dir, filename);
 	ret = sqfs_opendir(dir, &dirsp);
 	if (ret) {
-		sqfs_closedir(dirsp);
-		goto free_paths;
+		goto out;
 	}
 
 	dirs = (struct squashfs_dir_stream *)dirsp;
@@ -1252,14 +1353,14 @@ int sqfs_read(const char *filename, void *buf, loff_t offset, loff_t len,
 			break;
 
 		free(dirs->entry);
+		dirs->entry = NULL;
 	}
 
 	if (ret) {
 		printf("File not found.\n");
 		*actread = 0;
-		sqfs_closedir(dirsp);
 		ret = -ENOENT;
-		goto free_paths;
+		goto out;
 	}
 
 	i_number = dirs->dir_header->inode_number + dirs->entry->inode_offset;
@@ -1274,7 +1375,7 @@ int sqfs_read(const char *filename, void *buf, loff_t offset, loff_t len,
 						      sblk->block_size);
 		if (datablk_count < 0) {
 			ret = -EINVAL;
-			goto free_paths;
+			goto out;
 		}
 
 		memcpy(finfo.blk_sizes, ipos + sizeof(*reg),
@@ -1287,7 +1388,7 @@ int sqfs_read(const char *filename, void *buf, loff_t offset, loff_t len,
 						       sblk->block_size);
 		if (datablk_count < 0) {
 			ret = -EINVAL;
-			goto free_paths;
+			goto out;
 		}
 
 		memcpy(finfo.blk_sizes, ipos + sizeof(*lreg),
@@ -1299,7 +1400,7 @@ int sqfs_read(const char *filename, void *buf, loff_t offset, loff_t len,
 		resolved = sqfs_resolve_symlink(symlink, filename);
 		ret = sqfs_read(resolved, buf, offset, len, actread);
 		free(resolved);
-		goto free_paths;
+		goto out;
 	case SQFS_BLKDEV_TYPE:
 	case SQFS_CHRDEV_TYPE:
 	case SQFS_LBLKDEV_TYPE:
@@ -1311,17 +1412,19 @@ int sqfs_read(const char *filename, void *buf, loff_t offset, loff_t len,
 	default:
 		printf("Unsupported entry type\n");
 		ret = -EINVAL;
-		goto free_paths;
+		goto out;
 	}
 
 	/* If the user specifies a length, check its sanity */
 	if (len) {
 		if (len > finfo.size) {
 			ret = -EINVAL;
-			goto free_paths;
+			goto out;
 		}
 
 		finfo.size = len;
+	} else {
+		len = finfo.size;
 	}
 
 	if (datablk_count) {
@@ -1329,7 +1432,7 @@ int sqfs_read(const char *filename, void *buf, loff_t offset, loff_t len,
 		datablock = malloc(get_unaligned_le32(&sblk->block_size));
 		if (!datablock) {
 			ret = -ENOMEM;
-			goto free_paths;
+			goto out;
 		}
 	}
 
@@ -1344,7 +1447,7 @@ int sqfs_read(const char *filename, void *buf, loff_t offset, loff_t len,
 
 		if (!data_buffer) {
 			ret = -ENOMEM;
-			goto free_datablk;
+			goto out;
 		}
 
 		ret = sqfs_disk_read(start, n_blks, data_buffer);
@@ -1355,7 +1458,7 @@ int sqfs_read(const char *filename, void *buf, loff_t offset, loff_t len,
 			 * image with mksquashfs's -b <block_size> option.
 			 */
 			printf("Error: too many data blocks to be read.\n");
-			goto free_buffer;
+			goto out;
 		}
 
 		data = data_buffer + table_offset;
@@ -1366,26 +1469,32 @@ int sqfs_read(const char *filename, void *buf, loff_t offset, loff_t len,
 			ret = sqfs_decompress(&ctxt, datablock, &dest_len,
 					      data, table_size);
 			if (ret)
-				goto free_buffer;
+				goto out;
 
-			memcpy(buf + offset + *actread, datablock, dest_len);
+			if ((*actread + dest_len) > len)
+				dest_len = len - *actread;
+			memcpy(buf + *actread, datablock, dest_len);
 			*actread += dest_len;
 		} else {
-			memcpy(buf + offset + *actread, data, table_size);
+			if ((*actread + table_size) > len)
+				table_size = len - *actread;
+			memcpy(buf + *actread, data, table_size);
 			*actread += table_size;
 		}
 
 		data_offset += table_size;
+		free(data_buffer);
+		data_buffer = NULL;
+		if (*actread >= len)
+			break;
 	}
 
-	free(finfo.blk_sizes);
-
 	/*
 	 * There is no need to continue if the file is not fragmented.
 	 */
 	if (!finfo.frag) {
 		ret = 0;
-		goto free_buffer;
+		goto out;
 	}
 
 	start = frag_entry.start / ctxt.cur_dev->blksz;
@@ -1397,12 +1506,12 @@ int sqfs_read(const char *filename, void *buf, loff_t offset, loff_t len,
 
 	if (!fragment) {
 		ret = -ENOMEM;
-		goto free_buffer;
+		goto out;
 	}
 
 	ret = sqfs_disk_read(start, n_blks, fragment);
 	if (ret < 0)
-		goto free_fragment;
+		goto out;
 
 	/* File compressed and fragmented */
 	if (finfo.frag && finfo.comp) {
@@ -1410,7 +1519,7 @@ int sqfs_read(const char *filename, void *buf, loff_t offset, loff_t len,
 		fragment_block = malloc(dest_len);
 		if (!fragment_block) {
 			ret = -ENOMEM;
-			goto free_fragment;
+			goto out;
 		}
 
 		ret = sqfs_decompress(&ctxt, fragment_block, &dest_len,
@@ -1418,10 +1527,10 @@ int sqfs_read(const char *filename, void *buf, loff_t offset, loff_t len,
 				      frag_entry.size);
 		if (ret) {
 			free(fragment_block);
-			goto free_fragment;
+			goto out;
 		}
 
-		for (j = offset + *actread; j < finfo.size; j++) {
+		for (j = *actread; j < finfo.size; j++) {
 			memcpy(buf + j, &fragment_block[finfo.offset + j], 1);
 			(*actread)++;
 		}
@@ -1431,23 +1540,22 @@ int sqfs_read(const char *filename, void *buf, loff_t offset, loff_t len,
 	} else if (finfo.frag && !finfo.comp) {
 		fragment_block = (void *)fragment + table_offset;
 
-		for (j = offset + *actread; j < finfo.size; j++) {
+		for (j = *actread; j < finfo.size; j++) {
 			memcpy(buf + j, &fragment_block[finfo.offset + j], 1);
 			(*actread)++;
 		}
 	}
 
-free_fragment:
+out:
 	free(fragment);
-free_buffer:
-	if (datablk_count)
+	if (datablk_count) {
 		free(data_buffer);
-free_datablk:
-	if (datablk_count)
 		free(datablock);
-free_paths:
+	}
 	free(file);
 	free(dir);
+	free(finfo.blk_sizes);
+	sqfs_closedir(dirsp);
 
 	return ret;
 }
@@ -1473,7 +1581,6 @@ int sqfs_size(const char *filename, loff_t *size)
 	 */
 	ret = sqfs_opendir(dir, &dirsp);
 	if (ret) {
-		sqfs_closedir(dirsp);
 		ret = -EINVAL;
 		goto free_strings;
 	}
@@ -1485,6 +1592,7 @@ int sqfs_size(const char *filename, loff_t *size)
 		if (!ret)
 			break;
 		free(dirs->entry);
+		dirs->entry = NULL;
 	}
 
 	if (ret) {
@@ -1498,6 +1606,7 @@ int sqfs_size(const char *filename, loff_t *size)
 	ipos = sqfs_find_inode(dirs->inode_table, i_number, sblk->inodes,
 			       sblk->block_size);
 	free(dirs->entry);
+	dirs->entry = NULL;
 
 	base = (struct squashfs_base_inode *)ipos;
 	switch (get_unaligned_le16(&base->inode_type)) {
@@ -1540,6 +1649,44 @@ free_strings:
 	return ret;
 }
 
+int sqfs_exists(const char *filename)
+{
+	struct fs_dir_stream *dirsp = NULL;
+	struct squashfs_dir_stream *dirs;
+	char *dir, *file;
+	struct fs_dirent *dent;
+	int ret;
+
+	sqfs_split_path(&file, &dir, filename);
+	/*
+	 * sqfs_opendir will uncompress inode and directory tables, and will
+	 * return a pointer to the directory that contains the requested file.
+	 */
+	ret = sqfs_opendir(dir, &dirsp);
+	if (ret) {
+		ret = -EINVAL;
+		goto free_strings;
+	}
+
+	dirs = (struct squashfs_dir_stream *)dirsp;
+
+	while (!sqfs_readdir(dirsp, &dent)) {
+		ret = strcmp(dent->name, file);
+		if (!ret)
+			break;
+		free(dirs->entry);
+		dirs->entry = NULL;
+	}
+
+	sqfs_closedir(dirsp);
+
+free_strings:
+	free(dir);
+	free(file);
+
+	return ret == 0;
+}
+
 void sqfs_close(void)
 {
 	free(ctxt.sblk);
@@ -1555,4 +1702,5 @@ void sqfs_closedir(struct fs_dir_stream *dirs)
 	free(sqfs_dirs->inode_table);
 	free(sqfs_dirs->dir_table);
 	free(sqfs_dirs->dir_header);
+	free(sqfs_dirs);
 }
diff --git a/fs/squashfs/sqfs_inode.c b/fs/squashfs/sqfs_inode.c
index 14d70cf678..e76ec7cbdf 100644
--- a/fs/squashfs/sqfs_inode.c
+++ b/fs/squashfs/sqfs_inode.c
@@ -49,7 +49,7 @@ int sqfs_inode_size(struct squashfs_base_inode *inode, u32 blk_size)
 			return sizeof(*ldir);
 
 		di = ldir->index;
-		while (l < i_count + 1) {
+		while (l < i_count) {
 			sz = get_unaligned_le32(&di->size) + 1;
 			index_list_size += sz;
 			di = (void *)di + sizeof(*di) + sz;
@@ -57,7 +57,7 @@ int sqfs_inode_size(struct squashfs_base_inode *inode, u32 blk_size)
 		}
 
 		return sizeof(*ldir) + index_list_size +
-			(i_count + 1) * SQFS_DIR_INDEX_BASE_LENGTH;
+			i_count * SQFS_DIR_INDEX_BASE_LENGTH;
 	}
 
 	case SQFS_LREG_TYPE: {
diff --git a/include/configs/km/keymile-common.h b/include/configs/km/keymile-common.h
index c1968048a7..851b13e063 100644
--- a/include/configs/km/keymile-common.h
+++ b/include/configs/km/keymile-common.h
@@ -90,12 +90,12 @@
 		"set_fdthigh cramfsloadkernel flashargs add_default "	\
 		"addpanic boot\0"					\
 	"develop="							\
-		"tftp 200000 scripts/develop-${arch}.txt && "		\
-		"env import -t 200000 ${filesize} && "			\
+		"tftp ${load_addr_r} scripts/develop-${arch}.txt && "	\
+		"env import -t ${load_addr_r} ${filesize} && "		\
 		"run setup_debug_env\0"					\
 	"ramfs="							\
-		"tftp 200000 scripts/ramfs-${arch}.txt && "		\
-		"env import -t 200000 ${filesize} && "			\
+		"tftp ${load_addr_r} scripts/ramfs-${arch}.txt && "	\
+		"env import -t ${load_addr_r} ${filesize} && "		\
 		"run setup_debug_env\0"					\
 	""
 
diff --git a/include/configs/kmcoge5ne.h b/include/configs/kmcoge5ne.h
index 4d01f236c3..cdfb280aee 100644
--- a/include/configs/kmcoge5ne.h
+++ b/include/configs/kmcoge5ne.h
@@ -51,7 +51,7 @@
 /* enable POST tests */
 #define CONFIG_POST (CONFIG_SYS_POST_MEMORY|CONFIG_SYS_POST_MEM_REGIONS)
 #define CONFIG_POST_EXTERNAL_WORD_FUNCS /* use own functions, not generic */
-#define CPM_POST_WORD_ADDR  0x00f00000
+#define CPM_POST_WORD_ADDR  CONFIG_SYS_MEMTEST_END
 #define CONFIG_TESTPIN_REG  gprt3	/* for kmcoge5ne */
 #define CONFIG_TESTPIN_MASK 0x20	/* for kmcoge5ne */
 
diff --git a/include/squashfs.h b/include/squashfs.h
index 819cf8c2da..7489eefa1f 100644
--- a/include/squashfs.h
+++ b/include/squashfs.h
@@ -19,6 +19,7 @@ int sqfs_probe(struct blk_desc *fs_dev_desc,
 int sqfs_read(const char *filename, void *buf, loff_t offset,
 	      loff_t len, loff_t *actread);
 int sqfs_size(const char *filename, loff_t *size);
+int sqfs_exists(const char *filename);
 void sqfs_close(void);
 void sqfs_closedir(struct fs_dir_stream *dirs);
 
diff --git a/tools/image-host.c b/tools/image-host.c
index 7cef78eab8..e32cc64257 100644
--- a/tools/image-host.c
+++ b/tools/image-host.c
@@ -335,14 +335,14 @@ static int get_random_data(void *data, int size)
 	ret = clock_gettime(CLOCK_MONOTONIC, &date);
 	if (ret < 0) {
 		printf("%s: clock_gettime has failed (err=%d, str=%s)\n",
-		       __func__, ret, strerror(ret));
+		       __func__, ret, strerror(errno));
 		goto out;
 	}
 
-	srand(date.tv_nsec);
+	srandom(date.tv_nsec);
 
 	for (i = 0; i < size; i++) {
-		*tmp = rand() & 0xff;
+		*tmp = random() & 0xff;
 		tmp++;
 	}
 
diff --git a/tools/imagetool.h b/tools/imagetool.h
index acbc48e9be..8726792c8c 100644
--- a/tools/imagetool.h
+++ b/tools/imagetool.h
@@ -126,9 +126,9 @@ struct image_type_params {
 					struct image_tool_params *);
 	/*
 	 * This function is used by the command to retrieve a component
-	 * (sub-image) from the image (i.e. dumpimage -i <image> -p <position>
-	 * <sub-image-name>).
-	 * Thus the code to extract a file from an image must be put here.
+	 * (sub-image) from the image (i.e. dumpimage -p <position>
+	 * -o <component-outfile> <image>). Thus the code to extract a file
+	 * from an image must be put here.
 	 *
 	 * Returns 0 if the file was successfully retrieved from the image,
 	 * or a negative value on error.