mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-11-24 19:18:26 +02:00
9b11307b07
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@7439 3c298f89-4303-0410-b956-a3cf2f4a3e73
415 lines
14 KiB
Diff
415 lines
14 KiB
Diff
diff -ur linux.old/drivers/mtd/Kconfig linux.dev/drivers/mtd/Kconfig
|
|
--- linux.old/drivers/mtd/Kconfig 2007-01-10 20:10:37.000000000 +0100
|
|
+++ linux.dev/drivers/mtd/Kconfig 2007-02-19 23:00:53.739457000 +0100
|
|
@@ -49,6 +49,11 @@
|
|
devices. Partitioning on NFTL 'devices' is a different - that's the
|
|
'normal' form of partitioning used on a block device.
|
|
|
|
+config MTD_SPLIT_ROOTFS
|
|
+ bool "Automatically split rootfs partition for squashfs"
|
|
+ depends on MTD_PARTITIONS
|
|
+ default y
|
|
+
|
|
config MTD_REDBOOT_PARTS
|
|
tristate "RedBoot partition table parsing"
|
|
depends on MTD_PARTITIONS
|
|
diff -ur linux.old/drivers/mtd/mtdpart.c linux.dev/drivers/mtd/mtdpart.c
|
|
--- linux.old/drivers/mtd/mtdpart.c 2007-01-10 20:10:37.000000000 +0100
|
|
+++ linux.dev/drivers/mtd/mtdpart.c 2007-02-20 00:01:38.587355896 +0100
|
|
@@ -20,6 +20,8 @@
|
|
#include <linux/mtd/mtd.h>
|
|
#include <linux/mtd/partitions.h>
|
|
#include <linux/mtd/compatmac.h>
|
|
+#include <linux/squashfs_fs.h>
|
|
+#include <linux/root_dev.h>
|
|
|
|
/* Our partition linked list */
|
|
static LIST_HEAD(mtd_partitions);
|
|
@@ -303,6 +305,173 @@
|
|
return 0;
|
|
}
|
|
|
|
+static u_int32_t cur_offset = 0;
|
|
+static int add_mtd_partition(struct mtd_info *master, const struct mtd_partition *part, int i)
|
|
+{
|
|
+ struct mtd_part *slave;
|
|
+
|
|
+ /* allocate the partition structure */
|
|
+ slave = kmalloc (sizeof(*slave), GFP_KERNEL);
|
|
+ if (!slave) {
|
|
+ printk ("memory allocation error while creating partitions for \"%s\"\n",
|
|
+ master->name);
|
|
+ del_mtd_partitions(master);
|
|
+ return -ENOMEM;
|
|
+ }
|
|
+ memset(slave, 0, sizeof(*slave));
|
|
+ list_add(&slave->list, &mtd_partitions);
|
|
+
|
|
+ /* set up the MTD object for this partition */
|
|
+ slave->mtd.type = master->type;
|
|
+ slave->mtd.flags = master->flags & ~part->mask_flags;
|
|
+ slave->mtd.size = part->size;
|
|
+ slave->mtd.writesize = master->writesize;
|
|
+ slave->mtd.oobsize = master->oobsize;
|
|
+ slave->mtd.ecctype = master->ecctype;
|
|
+ slave->mtd.eccsize = master->eccsize;
|
|
+
|
|
+ slave->mtd.name = part->name;
|
|
+ slave->mtd.bank_size = master->bank_size;
|
|
+ slave->mtd.owner = master->owner;
|
|
+
|
|
+ slave->mtd.read = part_read;
|
|
+ slave->mtd.write = part_write;
|
|
+
|
|
+ if(master->point && master->unpoint){
|
|
+ slave->mtd.point = part_point;
|
|
+ slave->mtd.unpoint = part_unpoint;
|
|
+ }
|
|
+
|
|
+ if (master->read_oob)
|
|
+ slave->mtd.read_oob = part_read_oob;
|
|
+ if (master->write_oob)
|
|
+ slave->mtd.write_oob = part_write_oob;
|
|
+ if(master->read_user_prot_reg)
|
|
+ slave->mtd.read_user_prot_reg = part_read_user_prot_reg;
|
|
+ if(master->read_fact_prot_reg)
|
|
+ slave->mtd.read_fact_prot_reg = part_read_fact_prot_reg;
|
|
+ if(master->write_user_prot_reg)
|
|
+ slave->mtd.write_user_prot_reg = part_write_user_prot_reg;
|
|
+ if(master->lock_user_prot_reg)
|
|
+ slave->mtd.lock_user_prot_reg = part_lock_user_prot_reg;
|
|
+ if(master->get_user_prot_info)
|
|
+ slave->mtd.get_user_prot_info = part_get_user_prot_info;
|
|
+ if(master->get_fact_prot_info)
|
|
+ slave->mtd.get_fact_prot_info = part_get_fact_prot_info;
|
|
+ if (master->sync)
|
|
+ slave->mtd.sync = part_sync;
|
|
+ if (!i && master->suspend && master->resume) {
|
|
+ slave->mtd.suspend = part_suspend;
|
|
+ slave->mtd.resume = part_resume;
|
|
+ }
|
|
+ if (master->writev)
|
|
+ slave->mtd.writev = part_writev;
|
|
+ if (master->lock)
|
|
+ slave->mtd.lock = part_lock;
|
|
+ if (master->unlock)
|
|
+ slave->mtd.unlock = part_unlock;
|
|
+ if (master->block_isbad)
|
|
+ slave->mtd.block_isbad = part_block_isbad;
|
|
+ if (master->block_markbad)
|
|
+ slave->mtd.block_markbad = part_block_markbad;
|
|
+ slave->mtd.erase = part_erase;
|
|
+ slave->master = master;
|
|
+ slave->offset = part->offset;
|
|
+ slave->index = i;
|
|
+
|
|
+ if (slave->offset == MTDPART_OFS_APPEND)
|
|
+ slave->offset = cur_offset;
|
|
+ if (slave->offset == MTDPART_OFS_NXTBLK) {
|
|
+ slave->offset = cur_offset;
|
|
+ if ((cur_offset % master->erasesize) != 0) {
|
|
+ /* Round up to next erasesize */
|
|
+ slave->offset = ((cur_offset / master->erasesize) + 1) * master->erasesize;
|
|
+ printk(KERN_NOTICE "Moving partition %d: "
|
|
+ "0x%08x -> 0x%08x\n", i,
|
|
+ cur_offset, slave->offset);
|
|
+ }
|
|
+ }
|
|
+ if (slave->mtd.size == MTDPART_SIZ_FULL)
|
|
+ slave->mtd.size = master->size - slave->offset;
|
|
+ cur_offset = slave->offset + slave->mtd.size;
|
|
+
|
|
+ printk (KERN_NOTICE "0x%08x-0x%08x : \"%s\"\n", slave->offset,
|
|
+ slave->offset + slave->mtd.size, slave->mtd.name);
|
|
+
|
|
+ /* let's do some sanity checks */
|
|
+ if (slave->offset >= master->size) {
|
|
+ /* let's register it anyway to preserve ordering */
|
|
+ slave->offset = 0;
|
|
+ slave->mtd.size = 0;
|
|
+ printk ("mtd: partition \"%s\" is out of reach -- disabled\n",
|
|
+ part->name);
|
|
+ }
|
|
+ if (slave->offset + slave->mtd.size > master->size) {
|
|
+ slave->mtd.size = master->size - slave->offset;
|
|
+ printk ("mtd: partition \"%s\" extends beyond the end of device \"%s\" -- size truncated to %#x\n",
|
|
+ part->name, master->name, slave->mtd.size);
|
|
+ }
|
|
+ if (master->numeraseregions>1) {
|
|
+ /* Deal with variable erase size stuff */
|
|
+ int i;
|
|
+ struct mtd_erase_region_info *regions = master->eraseregions;
|
|
+
|
|
+ /* Find the first erase regions which is part of this partition. */
|
|
+ for (i=0; i < master->numeraseregions && slave->offset >= regions[i].offset; i++)
|
|
+ ;
|
|
+
|
|
+ for (i--; i < master->numeraseregions && slave->offset + slave->mtd.size > regions[i].offset; i++) {
|
|
+ if (slave->mtd.erasesize < regions[i].erasesize) {
|
|
+ slave->mtd.erasesize = regions[i].erasesize;
|
|
+ }
|
|
+ }
|
|
+ } else {
|
|
+ /* Single erase size */
|
|
+ slave->mtd.erasesize = master->erasesize;
|
|
+ }
|
|
+
|
|
+ if ((slave->mtd.flags & MTD_WRITEABLE) &&
|
|
+ (slave->offset % slave->mtd.erasesize)) {
|
|
+ /* Doesn't start on a boundary of major erase size */
|
|
+ /* FIXME: Let it be writable if it is on a boundary of _minor_ erase size though */
|
|
+ slave->mtd.flags &= ~MTD_WRITEABLE;
|
|
+ printk ("mtd: partition \"%s\" doesn't start on an erase block boundary -- force read-only\n",
|
|
+ part->name);
|
|
+ }
|
|
+ if ((slave->mtd.flags & MTD_WRITEABLE) &&
|
|
+ (slave->mtd.size % slave->mtd.erasesize)) {
|
|
+ slave->mtd.flags &= ~MTD_WRITEABLE;
|
|
+ printk ("mtd: partition \"%s\" doesn't end on an erase block -- force read-only\n",
|
|
+ part->name);
|
|
+ }
|
|
+
|
|
+ slave->mtd.ecclayout = master->ecclayout;
|
|
+ if (master->block_isbad) {
|
|
+ uint32_t offs = 0;
|
|
+
|
|
+ while(offs < slave->mtd.size) {
|
|
+ if (master->block_isbad(master,
|
|
+ offs + slave->offset))
|
|
+ slave->mtd.ecc_stats.badblocks++;
|
|
+ offs += slave->mtd.erasesize;
|
|
+ }
|
|
+ }
|
|
+
|
|
+ if(part->mtdp)
|
|
+ { /* store the object pointer (caller may or may not register it */
|
|
+ *part->mtdp = &slave->mtd;
|
|
+ slave->registered = 0;
|
|
+ }
|
|
+ else
|
|
+ {
|
|
+ /* register our partition */
|
|
+ add_mtd_device(&slave->mtd);
|
|
+ slave->registered = 1;
|
|
+ }
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
/*
|
|
* This function, given a master MTD object and a partition table, creates
|
|
* and registers slave MTD objects which are bound to the master according to
|
|
@@ -314,171 +483,53 @@
|
|
const struct mtd_partition *parts,
|
|
int nbparts)
|
|
{
|
|
- struct mtd_part *slave;
|
|
- u_int32_t cur_offset = 0;
|
|
- int i;
|
|
+ struct mtd_partition *part;
|
|
+ int i, ret = 0;
|
|
|
|
printk (KERN_NOTICE "Creating %d MTD partitions on \"%s\":\n", nbparts, master->name);
|
|
|
|
for (i = 0; i < nbparts; i++) {
|
|
+ part = (struct mtd_partition *) &parts[i];
|
|
+ ret = add_mtd_partition(master, part, i);
|
|
+ if (ret)
|
|
+ return ret;
|
|
+ if (strcmp(part->name, "rootfs") == 0) {
|
|
+#ifdef CONFIG_MTD_SPLIT_ROOTFS
|
|
+ int len;
|
|
+ char buf[512];
|
|
+ struct squashfs_super_block *sb = (struct squashfs_super_block *) buf;
|
|
+#define ROOTFS_SPLIT_NAME "rootfs_data"
|
|
+ if ((master->read(master, part->offset, sizeof(struct squashfs_super_block), &len, buf) == 0) &&
|
|
+ (len == sizeof(struct squashfs_super_block)) &&
|
|
+ (*((u32 *) buf) == SQUASHFS_MAGIC) &&
|
|
+ (sb->bytes_used > 0)) {
|
|
+
|
|
+
|
|
+ part = kmalloc(sizeof(struct mtd_partition), GFP_KERNEL);
|
|
+ memcpy(part, &parts[i], sizeof(struct mtd_partition));
|
|
+
|
|
+ part->name = kmalloc(sizeof(ROOTFS_SPLIT_NAME) + 1, GFP_KERNEL);
|
|
+ strcpy(part->name, ROOTFS_SPLIT_NAME);
|
|
+
|
|
+ len = (u32) sb->bytes_used;
|
|
+ len += (part->offset & 0x000fffff);
|
|
+ len += (master->erasesize - 1);
|
|
+ len &= ~(master->erasesize - 1);
|
|
+ len -= (part->offset & 0x000fffff);
|
|
+ part->offset += len;
|
|
+ part->size -= len;
|
|
+
|
|
+ if (master->erasesize <= part->size)
|
|
+ ret = add_mtd_partition(master, part, i + 1);
|
|
+ else
|
|
+ kfree(part->name);
|
|
+ if (ret)
|
|
+ return ret;
|
|
|
|
- /* allocate the partition structure */
|
|
- slave = kmalloc (sizeof(*slave), GFP_KERNEL);
|
|
- if (!slave) {
|
|
- printk ("memory allocation error while creating partitions for \"%s\"\n",
|
|
- master->name);
|
|
- del_mtd_partitions(master);
|
|
- return -ENOMEM;
|
|
- }
|
|
- memset(slave, 0, sizeof(*slave));
|
|
- list_add(&slave->list, &mtd_partitions);
|
|
-
|
|
- /* set up the MTD object for this partition */
|
|
- slave->mtd.type = master->type;
|
|
- slave->mtd.flags = master->flags & ~parts[i].mask_flags;
|
|
- slave->mtd.size = parts[i].size;
|
|
- slave->mtd.writesize = master->writesize;
|
|
- slave->mtd.oobsize = master->oobsize;
|
|
- slave->mtd.ecctype = master->ecctype;
|
|
- slave->mtd.eccsize = master->eccsize;
|
|
-
|
|
- slave->mtd.name = parts[i].name;
|
|
- slave->mtd.bank_size = master->bank_size;
|
|
- slave->mtd.owner = master->owner;
|
|
-
|
|
- slave->mtd.read = part_read;
|
|
- slave->mtd.write = part_write;
|
|
-
|
|
- if(master->point && master->unpoint){
|
|
- slave->mtd.point = part_point;
|
|
- slave->mtd.unpoint = part_unpoint;
|
|
- }
|
|
-
|
|
- if (master->read_oob)
|
|
- slave->mtd.read_oob = part_read_oob;
|
|
- if (master->write_oob)
|
|
- slave->mtd.write_oob = part_write_oob;
|
|
- if(master->read_user_prot_reg)
|
|
- slave->mtd.read_user_prot_reg = part_read_user_prot_reg;
|
|
- if(master->read_fact_prot_reg)
|
|
- slave->mtd.read_fact_prot_reg = part_read_fact_prot_reg;
|
|
- if(master->write_user_prot_reg)
|
|
- slave->mtd.write_user_prot_reg = part_write_user_prot_reg;
|
|
- if(master->lock_user_prot_reg)
|
|
- slave->mtd.lock_user_prot_reg = part_lock_user_prot_reg;
|
|
- if(master->get_user_prot_info)
|
|
- slave->mtd.get_user_prot_info = part_get_user_prot_info;
|
|
- if(master->get_fact_prot_info)
|
|
- slave->mtd.get_fact_prot_info = part_get_fact_prot_info;
|
|
- if (master->sync)
|
|
- slave->mtd.sync = part_sync;
|
|
- if (!i && master->suspend && master->resume) {
|
|
- slave->mtd.suspend = part_suspend;
|
|
- slave->mtd.resume = part_resume;
|
|
- }
|
|
- if (master->writev)
|
|
- slave->mtd.writev = part_writev;
|
|
- if (master->lock)
|
|
- slave->mtd.lock = part_lock;
|
|
- if (master->unlock)
|
|
- slave->mtd.unlock = part_unlock;
|
|
- if (master->block_isbad)
|
|
- slave->mtd.block_isbad = part_block_isbad;
|
|
- if (master->block_markbad)
|
|
- slave->mtd.block_markbad = part_block_markbad;
|
|
- slave->mtd.erase = part_erase;
|
|
- slave->master = master;
|
|
- slave->offset = parts[i].offset;
|
|
- slave->index = i;
|
|
-
|
|
- if (slave->offset == MTDPART_OFS_APPEND)
|
|
- slave->offset = cur_offset;
|
|
- if (slave->offset == MTDPART_OFS_NXTBLK) {
|
|
- slave->offset = cur_offset;
|
|
- if ((cur_offset % master->erasesize) != 0) {
|
|
- /* Round up to next erasesize */
|
|
- slave->offset = ((cur_offset / master->erasesize) + 1) * master->erasesize;
|
|
- printk(KERN_NOTICE "Moving partition %d: "
|
|
- "0x%08x -> 0x%08x\n", i,
|
|
- cur_offset, slave->offset);
|
|
+ kfree(part);
|
|
}
|
|
- }
|
|
- if (slave->mtd.size == MTDPART_SIZ_FULL)
|
|
- slave->mtd.size = master->size - slave->offset;
|
|
- cur_offset = slave->offset + slave->mtd.size;
|
|
-
|
|
- printk (KERN_NOTICE "0x%08x-0x%08x : \"%s\"\n", slave->offset,
|
|
- slave->offset + slave->mtd.size, slave->mtd.name);
|
|
-
|
|
- /* let's do some sanity checks */
|
|
- if (slave->offset >= master->size) {
|
|
- /* let's register it anyway to preserve ordering */
|
|
- slave->offset = 0;
|
|
- slave->mtd.size = 0;
|
|
- printk ("mtd: partition \"%s\" is out of reach -- disabled\n",
|
|
- parts[i].name);
|
|
- }
|
|
- if (slave->offset + slave->mtd.size > master->size) {
|
|
- slave->mtd.size = master->size - slave->offset;
|
|
- printk ("mtd: partition \"%s\" extends beyond the end of device \"%s\" -- size truncated to %#x\n",
|
|
- parts[i].name, master->name, slave->mtd.size);
|
|
- }
|
|
- if (master->numeraseregions>1) {
|
|
- /* Deal with variable erase size stuff */
|
|
- int i;
|
|
- struct mtd_erase_region_info *regions = master->eraseregions;
|
|
-
|
|
- /* Find the first erase regions which is part of this partition. */
|
|
- for (i=0; i < master->numeraseregions && slave->offset >= regions[i].offset; i++)
|
|
- ;
|
|
-
|
|
- for (i--; i < master->numeraseregions && slave->offset + slave->mtd.size > regions[i].offset; i++) {
|
|
- if (slave->mtd.erasesize < regions[i].erasesize) {
|
|
- slave->mtd.erasesize = regions[i].erasesize;
|
|
- }
|
|
- }
|
|
- } else {
|
|
- /* Single erase size */
|
|
- slave->mtd.erasesize = master->erasesize;
|
|
- }
|
|
-
|
|
- if ((slave->mtd.flags & MTD_WRITEABLE) &&
|
|
- (slave->offset % slave->mtd.erasesize)) {
|
|
- /* Doesn't start on a boundary of major erase size */
|
|
- /* FIXME: Let it be writable if it is on a boundary of _minor_ erase size though */
|
|
- slave->mtd.flags &= ~MTD_WRITEABLE;
|
|
- printk ("mtd: partition \"%s\" doesn't start on an erase block boundary -- force read-only\n",
|
|
- parts[i].name);
|
|
- }
|
|
- if ((slave->mtd.flags & MTD_WRITEABLE) &&
|
|
- (slave->mtd.size % slave->mtd.erasesize)) {
|
|
- slave->mtd.flags &= ~MTD_WRITEABLE;
|
|
- printk ("mtd: partition \"%s\" doesn't end on an erase block -- force read-only\n",
|
|
- parts[i].name);
|
|
- }
|
|
-
|
|
- slave->mtd.ecclayout = master->ecclayout;
|
|
- if (master->block_isbad) {
|
|
- uint32_t offs = 0;
|
|
-
|
|
- while(offs < slave->mtd.size) {
|
|
- if (master->block_isbad(master,
|
|
- offs + slave->offset))
|
|
- slave->mtd.ecc_stats.badblocks++;
|
|
- offs += slave->mtd.erasesize;
|
|
- }
|
|
- }
|
|
-
|
|
- if(parts[i].mtdp)
|
|
- { /* store the object pointer (caller may or may not register it */
|
|
- *parts[i].mtdp = &slave->mtd;
|
|
- slave->registered = 0;
|
|
- }
|
|
- else
|
|
- {
|
|
- /* register our partition */
|
|
- add_mtd_device(&slave->mtd);
|
|
- slave->registered = 1;
|
|
+#endif /* CONFIG_MTD_SPLIT_ROOTFS */
|
|
+ ROOT_DEV = MKDEV(MTD_BLOCK_MAJOR, i);
|
|
}
|
|
}
|
|
|