X-Git-Url: http://git.rohieb.name/openwrt.git/blobdiff_plain/e76b8552e23061a438bb00f9aae59d7a161f602c..7b7737acaf899ce8a50426c2a09c1c2d1c4380db:/target/linux/generic-2.6/patches-2.6.22/060-rootfs_split.patch

diff --git a/target/linux/generic-2.6/patches-2.6.22/060-rootfs_split.patch b/target/linux/generic-2.6/patches-2.6.22/060-rootfs_split.patch
deleted file mode 100644
index 37d645eb0..000000000
--- a/target/linux/generic-2.6/patches-2.6.22/060-rootfs_split.patch
+++ /dev/null
@@ -1,490 +0,0 @@
-Index: linux/drivers/mtd/Kconfig
-===================================================================
---- linux.orig/drivers/mtd/Kconfig
-+++ linux/drivers/mtd/Kconfig
-@@ -47,6 +47,16 @@ config MTD_PARTITIONS
- 	  devices. Partitioning on NFTL 'devices' is a different - that's the
- 	  'normal' form of partitioning used on a block device.
- 
-+config MTD_ROOTFS_ROOT_DEV
-+	bool "Automatically set 'rootfs' partition to be root filesystem"
-+	depends on MTD_PARTITIONS
-+	default y
-+
-+config MTD_ROOTFS_SPLIT
-+	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
-Index: linux/drivers/mtd/mtdpart.c
-===================================================================
---- linux.orig/drivers/mtd/mtdpart.c
-+++ linux/drivers/mtd/mtdpart.c
-@@ -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);
-@@ -308,6 +310,265 @@ int del_mtd_partitions(struct mtd_info *
- 	return 0;
- }
- 
-+static u_int32_t cur_offset = 0;
-+static int add_one_partition(struct mtd_info *master, const struct mtd_partition *part,
-+		int i, struct mtd_part **slp)
-+{
-+	struct mtd_part *slave;
-+
-+	/* allocate the partition structure */
-+	slave = kzalloc (sizeof(*slave), GFP_KERNEL);
-+	if (!slave) {
-+		printk ("memory allocation error while creating partitions for \"%s\"\n",
-+			master->name);
-+		del_mtd_partitions(master);
-+		return -ENOMEM;
-+	}
-+	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.oobavail = master->oobavail;
-+	slave->mtd.subpage_sft = master->subpage_sft;
-+
-+	slave->mtd.name = part->name;
-+	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;
-+	}
-+
-+	if (slp)
-+		*slp = slave;
-+
-+	return 0;
-+}
-+
-+#ifdef CONFIG_MTD_ROOTFS_SPLIT
-+#define ROOTFS_SPLIT_NAME "rootfs_data"
-+static int split_squashfs(struct mtd_info *master, struct mtd_partition *old,
-+		struct mtd_partition **new)
-+{
-+	struct mtd_partition *part = NULL;
-+	int len;
-+	char buf[512];
-+	struct squashfs_super_block *sb = (struct squashfs_super_block *) buf;
-+	int ret;
-+
-+	ret = master->read(master, old->offset, sizeof(*sb), &len, buf);
-+	if (ret) {
-+		printk(KERN_ALERT "split_squashfs: error occured while reading "
-+			"from \"%s\"\n", master->name);
-+		goto out;
-+	}
-+
-+	if (len != sizeof(*sb)) {
-+		printk(KERN_ALERT "split_squashfs: unable to read superblock "
-+			"from \"%s\"\n", master->name);
-+		ret=-1;
-+		goto out;
-+	}
-+
-+	if (*((u32 *) buf) != SQUASHFS_MAGIC) {
-+		printk(KERN_ALERT "split_squasfs: no squashfs found in \"%s\"\n",
-+			master->name);
-+		ret=0;
-+		goto out;
-+	}
-+
-+	if (sb->bytes_used <= 0) {
-+		printk(KERN_ALERT "split_squashfs: squashfs is empty in \"%s\"\n",
-+			master->name);
-+		ret=0;
-+		goto out;
-+	}
-+
-+	part = kmalloc(sizeof(*part)+sizeof(ROOTFS_SPLIT_NAME)+1, GFP_KERNEL);
-+	if (part == NULL) {
-+		printk(KERN_INFO "split_squashfs: no memory for partition \"%s\"\n",
-+			ROOTFS_SPLIT_NAME);
-+		ret = -ENOMEM;
-+		goto out;
-+	}
-+
-+	memcpy(part, old, sizeof(*part));
-+	part->name = (unsigned char *)&part[1];
-+	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;
-+
-+	ret = 0;
-+
-+out:
-+	*new = part;
-+	return ret;
-+}
-+
-+static int split_rootfs_data(struct mtd_info *master, struct mtd_partition *part,
-+		int index)
-+{
-+	struct mtd_partition *dpart;
-+	int ret;
-+
-+	ret = split_squashfs(master, part, &dpart);
-+	if (ret)
-+		return ret;
-+
-+	if (dpart == NULL)
-+		return 1;
-+
-+	printk(KERN_INFO "mtd: partition \"%s\" created automatically, ofs=%X, len=%X \n",
-+		ROOTFS_SPLIT_NAME, dpart->offset, dpart->size);
-+
-+	ret = add_one_partition(master, dpart, index, NULL);
-+	if (ret)
-+		kfree(dpart);
-+
-+	return ret;
-+}
-+#endif /* CONFIG_MTD_ROOTFS_SPLIT */
-+
- /*
-  * 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
-@@ -320,168 +581,31 @@ int add_mtd_partitions(struct mtd_info *
- 		       int nbparts)
- {
- 	struct mtd_part *slave;
--	u_int32_t cur_offset = 0;
--	int i;
-+	struct mtd_partition *part;
-+	int i, j, ret = 0;
- 
- 	printk (KERN_NOTICE "Creating %d MTD partitions on \"%s\":\n", nbparts, master->name);
- 
--	for (i = 0; i < nbparts; i++) {
--
--		/* allocate the partition structure */
--		slave = kzalloc (sizeof(*slave), GFP_KERNEL);
--		if (!slave) {
--			printk ("memory allocation error while creating partitions for \"%s\"\n",
--				master->name);
--			del_mtd_partitions(master);
--			return -ENOMEM;
--		}
--		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.oobavail = master->oobavail;
--		slave->mtd.subpage_sft = master->subpage_sft;
--
--		slave->mtd.name = parts[i].name;
--		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);
--			}
--		}
--		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;
-+	for (i = 0, j = 0; i < nbparts; i++) {
-+		part = (struct mtd_partition *) &parts[i];
-+		ret = add_one_partition(master, part, j, &slave);
-+		if (ret)
-+			return ret;
-+		j++;
-+
-+		if (strcmp(part->name, "rootfs") == 0 && slave->registered) {
-+#ifdef CONFIG_MTD_ROOTFS_ROOT_DEV
-+			if (ROOT_DEV == 0) {
-+				printk(KERN_NOTICE "mtd: partition \"rootfs\" "
-+					"set to be root filesystem\n");
-+				ROOT_DEV = MKDEV(MTD_BLOCK_MAJOR, slave->mtd.index);
- 			}
--		}
--
--		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
-+#ifdef CONFIG_MTD_ROOTFS_SPLIT
-+			ret = split_rootfs_data(master, part, j);
-+			if (ret == 0)
-+				j++;
-+#endif
- 		}
- 	}
-