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Diffstat (limited to 'common/cmd_jffs2.c')
-rw-r--r--common/cmd_jffs2.c93
1 files changed, 77 insertions, 16 deletions
diff --git a/common/cmd_jffs2.c b/common/cmd_jffs2.c
index bc63f0c..ecadb79 100644
--- a/common/cmd_jffs2.c
+++ b/common/cmd_jffs2.c
@@ -104,10 +104,10 @@
#endif
/* enable/disable debugging messages */
-#define DEBUG
-#undef DEBUG
+#define DEBUG_JFFS
+#undef DEBUG_JFFS
-#ifdef DEBUG
+#ifdef DEBUG_JFFS
# define DEBUGF(fmt, args...) printf(fmt ,##args)
#else
# define DEBUGF(fmt, args...)
@@ -127,7 +127,7 @@
/* this flag needs to be set in part_info struct mask_flags
* field for read-only partitions */
-#define MTD_WRITEABLE 1
+#define MTD_WRITEABLE_CMD 1
#ifdef CONFIG_JFFS2_CMDLINE
/* default values for mtdids and mtdparts variables */
@@ -242,6 +242,46 @@ static void memsize_format(char *buf, u32 size)
}
/**
+ * This routine does global indexing of all partitions. Resulting index for
+ * current partition is saved in 'mtddevnum'. Current partition name in
+ * 'mtddevname'.
+ */
+static void index_partitions(void)
+{
+ char buf[16];
+ u16 mtddevnum;
+ struct part_info *part;
+ struct list_head *dentry;
+ struct mtd_device *dev;
+
+ DEBUGF("--- index partitions ---\n");
+
+ if (current_dev) {
+ mtddevnum = 0;
+ list_for_each(dentry, &devices) {
+ dev = list_entry(dentry, struct mtd_device, link);
+ if (dev == current_dev) {
+ mtddevnum += current_partnum;
+ sprintf(buf, "%d", mtddevnum);
+ setenv("mtddevnum", buf);
+ break;
+ }
+ mtddevnum += dev->num_parts;
+ }
+
+ part = jffs2_part_info(current_dev, current_partnum);
+ setenv("mtddevname", part->name);
+
+ DEBUGF("=> mtddevnum %d,\n=> mtddevname %s\n", mtddevnum, part->name);
+ } else {
+ setenv("mtddevnum", NULL);
+ setenv("mtddevname", NULL);
+
+ DEBUGF("=> mtddevnum NULL\n=> mtddevname NULL\n");
+ }
+}
+
+/**
* Save current device and partition in environment variable 'partition'.
*/
static void current_save(void)
@@ -264,6 +304,7 @@ static void current_save(void)
DEBUGF("=> partition NULL\n");
}
+ index_partitions();
}
/**
@@ -279,7 +320,7 @@ static int part_validate_nor(struct mtdids *id, struct part_info *part)
{
#if (CONFIG_COMMANDS & CFG_CMD_FLASH)
/* info for FLASH chips */
- extern flash_info_t flash_info[CFG_MAX_FLASH_BANKS];
+ extern flash_info_t flash_info[];
flash_info_t *flash;
int offset_aligned;
u32 end_offset;
@@ -401,6 +442,8 @@ static int part_validate(struct mtdids *id, struct part_info *part)
*/
static int part_del(struct mtd_device *dev, struct part_info *part)
{
+ u8 current_save_needed = 0;
+
/* if there is only one partition, remove whole device */
if (dev->num_parts == 1)
return device_del(dev);
@@ -417,11 +460,10 @@ static int part_del(struct mtd_device *dev, struct part_info *part)
if (curr_pi == part) {
printf("current partition deleted, resetting current to 0\n");
current_partnum = 0;
- current_save();
} else if (part->offset <= curr_pi->offset) {
current_partnum--;
- current_save();
}
+ current_save_needed = 1;
}
}
@@ -432,6 +474,11 @@ static int part_del(struct mtd_device *dev, struct part_info *part)
free(part);
dev->num_parts--;
+ if (current_save_needed > 0)
+ current_save();
+ else
+ index_partitions();
+
return 0;
}
@@ -475,6 +522,8 @@ static int part_sort_add(struct mtd_device *dev, struct part_info *part)
if (list_empty(&dev->parts)) {
DEBUGF("part_sort_add: list empty\n");
list_add(&part->link, &dev->parts);
+ dev->num_parts++;
+ index_partitions();
return 0;
}
@@ -498,18 +547,23 @@ static int part_sort_add(struct mtd_device *dev, struct part_info *part)
if (new_pi->offset <= pi->offset) {
list_add_tail(&part->link, entry);
+ dev->num_parts++;
if (curr_pi && (pi->offset <= curr_pi->offset)) {
/* we are modyfing partitions for the current
* device, update current */
current_partnum++;
current_save();
+ } else {
+ index_partitions();
}
-
return 0;
}
}
+
list_add_tail(&part->link, &dev->parts);
+ dev->num_parts++;
+ index_partitions();
return 0;
}
@@ -530,7 +584,6 @@ static int part_add(struct mtd_device *dev, struct part_info *part)
if (part_sort_add(dev, part) != 0)
return 1;
- dev->num_parts++;
return 0;
}
@@ -600,7 +653,7 @@ static int part_parse(const char *const partdef, const char **ret, struct part_i
/* test for options */
mask_flags = 0;
if (strncmp(p, "ro", 2) == 0) {
- mask_flags |= MTD_WRITEABLE;
+ mask_flags |= MTD_WRITEABLE_CMD;
p += 2;
}
@@ -665,7 +718,7 @@ static int device_validate(u8 type, u8 num, u32 *size)
if (type == MTD_DEV_TYPE_NOR) {
#if (CONFIG_COMMANDS & CFG_CMD_FLASH)
if (num < CFG_MAX_FLASH_BANKS) {
- extern flash_info_t flash_info[CFG_MAX_FLASH_BANKS];
+ extern flash_info_t flash_info[];
*size = flash_info[num].size;
return 0;
@@ -746,9 +799,10 @@ static int device_del(struct mtd_device *dev)
current_partnum = 0;
}
current_save();
+ return 0;
}
-
+ index_partitions();
return 0;
}
@@ -782,13 +836,20 @@ static struct mtd_device* device_find(u8 type, u8 num)
*/
static void device_add(struct mtd_device *dev)
{
+ u8 current_save_needed = 0;
+
if (list_empty(&devices)) {
current_dev = dev;
current_partnum = 0;
- current_save();
+ current_save_needed = 1;
}
list_add_tail(&dev->link, &devices);
+
+ if (current_save_needed > 0)
+ current_save();
+ else
+ index_partitions();
}
/**
@@ -907,7 +968,7 @@ static int device_parse(const char *const mtd_dev, const char **ret, struct mtd_
}
memset(dev, 0, sizeof(struct mtd_device));
dev->id = id;
- dev->num_parts = num_parts;
+ dev->num_parts = 0; /* part_sort_add increments num_parts */
INIT_LIST_HEAD(&dev->parts);
INIT_LIST_HEAD(&dev->link);
@@ -1120,7 +1181,7 @@ static int generate_mtdparts(char *buf, u32 buflen)
}
/* ro mask flag */
- if (part->mask_flags && MTD_WRITEABLE) {
+ if (part->mask_flags && MTD_WRITEABLE_CMD) {
len = 2;
if (len > maxlen)
goto cleanup;
@@ -1559,7 +1620,7 @@ int mtdparts_init(void)
ids_changed = 1;
if (parse_mtdids(ids) != 0) {
- device_delall(&devices);
+ devices_init();
return 1;
}
generated by cgit v1.1 at 2024-11-26 23:28:46 +0000