From 32a6800a4198273386510b991fee7ab3d90a4afd Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Thu, 19 Mar 2015 11:58:59 +0000 Subject: kernel: remove linux 3.8 support Signed-off-by: Felix Fietkau SVN-Revision: 44890 --- .../generic/patches-3.8/400-rootfs_split.patch | 316 --------------------- 1 file changed, 316 deletions(-) delete mode 100644 target/linux/generic/patches-3.8/400-rootfs_split.patch (limited to 'target/linux/generic/patches-3.8/400-rootfs_split.patch') diff --git a/target/linux/generic/patches-3.8/400-rootfs_split.patch b/target/linux/generic/patches-3.8/400-rootfs_split.patch deleted file mode 100644 index 88929fd3fa..0000000000 --- a/target/linux/generic/patches-3.8/400-rootfs_split.patch +++ /dev/null @@ -1,316 +0,0 @@ ---- a/drivers/mtd/Kconfig -+++ b/drivers/mtd/Kconfig -@@ -23,6 +23,14 @@ config MTD_TESTS - WARNING: some of the tests will ERASE entire MTD device which they - test. Do not use these tests unless you really know what you do. - -+config MTD_ROOTFS_ROOT_DEV -+ bool "Automatically set 'rootfs' partition to be root filesystem" -+ default y -+ -+config MTD_ROOTFS_SPLIT -+ bool "Automatically split 'rootfs' partition for squashfs" -+ default y -+ - config MTD_REDBOOT_PARTS - tristate "RedBoot partition table parsing" - ---help--- ---- a/drivers/mtd/mtdpart.c -+++ b/drivers/mtd/mtdpart.c -@@ -29,6 +29,8 @@ - #include - #include - #include -+#include -+#include - #include - - #include "mtdcore.h" -@@ -50,7 +52,7 @@ struct mtd_part { - * the pointer to that structure with this macro. - */ - #define PART(x) ((struct mtd_part *)(x)) -- -+#define IS_PART(mtd) (mtd->_read == part_read) - - /* - * MTD methods which simply translate the effective address and pass through -@@ -613,6 +615,144 @@ int mtd_del_partition(struct mtd_info *m - } - EXPORT_SYMBOL_GPL(mtd_del_partition); - -+#ifdef CONFIG_MTD_ROOTFS_SPLIT -+#define ROOTFS_SPLIT_NAME "rootfs_data" -+#define ROOTFS_REMOVED_NAME "" -+ -+struct squashfs_super_block { -+ __le32 s_magic; -+ __le32 pad0[9]; -+ __le64 bytes_used; -+}; -+ -+ -+static int split_squashfs(struct mtd_info *master, int offset, int *split_offset) -+{ -+ struct squashfs_super_block sb; -+ int len, ret; -+ -+ ret = mtd_read(master, offset, sizeof(sb), &len, (void *) &sb); -+ if (ret || (len != sizeof(sb))) { -+ printk(KERN_ALERT "split_squashfs: error occured while reading " -+ "from \"%s\"\n", master->name); -+ return -EINVAL; -+ } -+ -+ if (SQUASHFS_MAGIC != le32_to_cpu(sb.s_magic) ) { -+ printk(KERN_ALERT "split_squashfs: no squashfs found in \"%s\"\n", -+ master->name); -+ *split_offset = 0; -+ return 0; -+ } -+ -+ if (le64_to_cpu((sb.bytes_used)) <= 0) { -+ printk(KERN_ALERT "split_squashfs: squashfs is empty in \"%s\"\n", -+ master->name); -+ *split_offset = 0; -+ return 0; -+ } -+ -+ len = (u32) le64_to_cpu(sb.bytes_used); -+ len += (offset & 0x000fffff); -+ len += (master->erasesize - 1); -+ len &= ~(master->erasesize - 1); -+ len -= (offset & 0x000fffff); -+ *split_offset = offset + len; -+ -+ return 0; -+} -+ -+static int split_rootfs_data(struct mtd_info *master, struct mtd_info *rpart, const struct mtd_partition *part) -+{ -+ struct mtd_partition dpart; -+ struct mtd_part *slave = NULL; -+ struct mtd_part *spart; -+ int ret, split_offset = 0; -+ -+ spart = PART(rpart); -+ ret = split_squashfs(master, spart->offset, &split_offset); -+ if (ret) -+ return ret; -+ -+ if (split_offset <= 0) -+ return 0; -+ -+ memcpy(&dpart, part, sizeof(dpart)); -+ dpart.name = ROOTFS_SPLIT_NAME; -+ -+ dpart.size = rpart->size - (split_offset - spart->offset); -+ dpart.offset = split_offset; -+ -+ printk(KERN_INFO "mtd: partition \"%s\" created automatically, ofs=%llX, len=%llX \n", -+ ROOTFS_SPLIT_NAME, dpart.offset, dpart.size); -+ -+ slave = allocate_partition(master, &dpart, 0, split_offset); -+ if (IS_ERR(slave)) -+ return PTR_ERR(slave); -+ mutex_lock(&mtd_partitions_mutex); -+ list_add(&slave->list, &mtd_partitions); -+ mutex_unlock(&mtd_partitions_mutex); -+ -+ add_mtd_device(&slave->mtd); -+ -+ rpart->split = &slave->mtd; -+ -+ return 0; -+} -+ -+static int refresh_rootfs_split(struct mtd_info *mtd) -+{ -+ struct mtd_partition tpart; -+ struct mtd_part *part; -+ char *name; -+ //int index = 0; -+ int offset, size; -+ int ret; -+ -+ part = PART(mtd); -+ -+ /* check for the new squashfs offset first */ -+ ret = split_squashfs(part->master, part->offset, &offset); -+ if (ret) -+ return ret; -+ -+ if ((offset > 0) && !mtd->split) { -+ printk(KERN_INFO "%s: creating new split partition for \"%s\"\n", __func__, mtd->name); -+ /* if we don't have a rootfs split partition, create a new one */ -+ tpart.name = (char *) mtd->name; -+ tpart.size = mtd->size; -+ tpart.offset = part->offset; -+ -+ return split_rootfs_data(part->master, &part->mtd, &tpart); -+ } else if ((offset > 0) && mtd->split) { -+ /* update the offsets of the existing partition */ -+ size = mtd->size + part->offset - offset; -+ -+ part = PART(mtd->split); -+ part->offset = offset; -+ part->mtd.size = size; -+ printk(KERN_INFO "%s: %s partition \"" ROOTFS_SPLIT_NAME "\", offset: 0x%06x (0x%06x)\n", -+ __func__, (!strcmp(part->mtd.name, ROOTFS_SPLIT_NAME) ? "updating" : "creating"), -+ (u32) part->offset, (u32) part->mtd.size); -+ name = kmalloc(sizeof(ROOTFS_SPLIT_NAME) + 1, GFP_KERNEL); -+ strcpy(name, ROOTFS_SPLIT_NAME); -+ part->mtd.name = name; -+ } else if ((offset <= 0) && mtd->split) { -+ printk(KERN_INFO "%s: removing partition \"%s\"\n", __func__, mtd->split->name); -+ -+ /* mark existing partition as removed */ -+ part = PART(mtd->split); -+ name = kmalloc(sizeof(ROOTFS_SPLIT_NAME) + 1, GFP_KERNEL); -+ strcpy(name, ROOTFS_REMOVED_NAME); -+ part->mtd.name = name; -+ part->offset = 0; -+ part->mtd.size = 0; -+ } -+ -+ return 0; -+} -+#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 -@@ -629,6 +769,9 @@ int add_mtd_partitions(struct mtd_info * - struct mtd_part *slave; - uint64_t cur_offset = 0; - int i; -+#ifdef CONFIG_MTD_ROOTFS_SPLIT -+ int ret; -+#endif - - printk(KERN_NOTICE "Creating %d MTD partitions on \"%s\":\n", nbparts, master->name); - -@@ -643,12 +786,53 @@ int add_mtd_partitions(struct mtd_info * - - add_mtd_device(&slave->mtd); - -+ if (!strcmp(parts[i].name, "rootfs")) { -+#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); -+ } -+#endif -+#ifdef CONFIG_MTD_ROOTFS_SPLIT -+ ret = split_rootfs_data(master, &slave->mtd, &parts[i]); -+ /* if (ret == 0) -+ * j++; */ -+#endif -+ } -+ - cur_offset = slave->offset + slave->mtd.size; - } - - return 0; - } - -+int mtd_device_refresh(struct mtd_info *mtd) -+{ -+ int ret = 0; -+ -+ if (IS_PART(mtd)) { -+ struct mtd_part *part; -+ struct mtd_info *master; -+ -+ part = PART(mtd); -+ master = part->master; -+ if (master->refresh_device) -+ ret = master->refresh_device(master); -+ } -+ -+ if (!ret && mtd->refresh_device) -+ ret = mtd->refresh_device(mtd); -+ -+#ifdef CONFIG_MTD_ROOTFS_SPLIT -+ if (!ret && IS_PART(mtd) && !strcmp(mtd->name, "rootfs")) -+ refresh_rootfs_split(mtd); -+#endif -+ -+ return 0; -+} -+EXPORT_SYMBOL_GPL(mtd_device_refresh); -+ - static DEFINE_SPINLOCK(part_parser_lock); - static LIST_HEAD(part_parsers); - ---- a/drivers/mtd/mtdchar.c -+++ b/drivers/mtd/mtdchar.c -@@ -1012,6 +1012,12 @@ static int mtdchar_ioctl(struct file *fi - break; - } - -+ case MTDREFRESH: -+ { -+ ret = mtd_device_refresh(mtd); -+ break; -+ } -+ - default: - ret = -ENOTTY; - } ---- a/include/linux/mtd/mtd.h -+++ b/include/linux/mtd/mtd.h -@@ -114,6 +114,7 @@ struct nand_ecclayout { - - struct module; /* only needed for owner field in mtd_info */ - -+struct mtd_info; - struct mtd_info { - u_char type; - uint32_t flags; -@@ -226,6 +227,9 @@ struct mtd_info { - int (*_block_markbad) (struct mtd_info *mtd, loff_t ofs); - int (*_suspend) (struct mtd_info *mtd); - void (*_resume) (struct mtd_info *mtd); -+ int (*refresh_device)(struct mtd_info *mtd); -+ struct mtd_info *split; -+ - /* - * If the driver is something smart, like UBI, it may need to maintain - * its own reference counting. The below functions are only for driver. -@@ -368,6 +372,7 @@ extern int mtd_device_parse_register(str - int defnr_parts); - #define mtd_device_register(master, parts, nr_parts) \ - mtd_device_parse_register(master, NULL, NULL, parts, nr_parts) -+extern int mtd_device_refresh(struct mtd_info *master); - extern int mtd_device_unregister(struct mtd_info *master); - extern struct mtd_info *get_mtd_device(struct mtd_info *mtd, int num); - extern int __get_mtd_device(struct mtd_info *mtd); ---- a/include/linux/mtd/partitions.h -+++ b/include/linux/mtd/partitions.h -@@ -36,12 +36,14 @@ - * erasesize aligned (e.g. use MTDPART_OFS_NEXTBLK). - */ - -+struct mtd_partition; - struct mtd_partition { - char *name; /* identifier string */ - uint64_t size; /* partition size */ - uint64_t offset; /* offset within the master MTD space */ - uint32_t mask_flags; /* master MTD flags to mask out for this partition */ - struct nand_ecclayout *ecclayout; /* out of band layout for this partition (NAND only) */ -+ int (*refresh_partition)(struct mtd_info *); - }; - - #define MTDPART_OFS_RETAIN (-3) ---- a/include/uapi/mtd/mtd-abi.h -+++ b/include/uapi/mtd/mtd-abi.h -@@ -202,6 +202,7 @@ struct otp_info { - * without OOB, e.g., NOR flash. - */ - #define MEMWRITE _IOWR('M', 24, struct mtd_write_req) -+#define MTDREFRESH _IO('M', 50) - - /* - * Obsolete legacy interface. Keep it in order not to break userspace -- cgit v1.2.3