brcm47xx: drop 3.14

[openwrt/openwrt.git] / target / linux / generic / patches-3.14 / 400-mtd-add-rootfs-split-support.patch

diff --git a/target/linux/generic/patches-3.14/400-mtd-add-rootfs-split-support.patch b/target/linux/generic/patches-3.14/400-mtd-add-rootfs-split-support.patch
index e618dd6224cf5788856057318baec7bb732cc912..94551e247f674ac0faf716a45ab33173b4d243bc 100644 (file)
--- a/target/linux/generic/patches-3.14/400-mtd-add-rootfs-split-support.patch
+++ b/target/linux/generic/patches-3.14/400-mtd-add-rootfs-split-support.patch
@@ -1,6 +1,6 @@
 --- a/drivers/mtd/Kconfig
 +++ b/drivers/mtd/Kconfig
-@@ -12,6 +12,33 @@ menuconfig MTD
+@@ -12,6 +12,23 @@ menuconfig MTD
  
  if MTD
  
@@ -10,11 +10,6 @@
 +      bool "Automatically set 'rootfs' partition to be root filesystem"
 +      default y
 +
-+config MTD_ROOTFS_SPLIT
-+      bool "Automatically split 'rootfs' partition for squashfs"
-+      select MTD_SPLIT
-+      default y
-+
 +config MTD_SPLIT_FIRMWARE
 +      bool "Automatically split firmware partition for kernel+rootfs"
 +      default y
@@ -24,11 +19,6 @@
 +      depends on MTD_SPLIT_FIRMWARE
 +      default "firmware"
 +
-+config MTD_UIMAGE_SPLIT
-+      bool "Enable split support for firmware partitions containing a uImage"
-+      depends on MTD_SPLIT_FIRMWARE
-+      default y
-+
 +endmenu
 +
  config MTD_TESTS
@@ -44,7 +34,7 @@
  #include <linux/err.h>
  
  #include "mtdcore.h"
-+#include "mtdsplit.h"
++#include "mtdsplit/mtdsplit.h"
  
  /* Our partition linked list */
  static LIST_HEAD(mtd_partitions);
@@ -125,88 +115,10 @@
  int mtd_del_partition(struct mtd_info *master, int partno)
  {
        struct mtd_part *slave, *next;
-@@ -614,6 +628,122 @@ int mtd_del_partition(struct mtd_info *m
+@@ -614,6 +628,35 @@ int mtd_del_partition(struct mtd_info *m
  }
  EXPORT_SYMBOL_GPL(mtd_del_partition);
  
-+static inline unsigned long
-+mtd_pad_erasesize(struct mtd_info *mtd, int offset, int len)
-+{
-+      unsigned long mask = mtd->erasesize - 1;
-+
-+      len += offset & mask;
-+      len = (len + mask) & ~mask;
-+      len -= offset & mask;
-+      return len;
-+}
-+
-+static int split_squashfs(struct mtd_info *master, int offset, int *split_offset)
-+{
-+      size_t squashfs_len;
-+      int len, ret;
-+
-+      ret = mtd_get_squashfs_len(master, offset, &squashfs_len);
-+      if (ret)
-+              return ret;
-+
-+      len = mtd_pad_erasesize(master, offset, squashfs_len);
-+      *split_offset = offset + len;
-+
-+      return 0;
-+}
-+
-+static void split_rootfs_data(struct mtd_info *master, struct mtd_part *part)
-+{
-+      unsigned int split_offset = 0;
-+      unsigned int split_size;
-+      int ret;
-+
-+      ret = split_squashfs(master, part->offset, &split_offset);
-+      if (ret)
-+              return;
-+
-+      if (split_offset <= 0)
-+              return;
-+
-+      if (config_enabled(CONFIG_MTD_SPLIT_SQUASHFS_ROOT))
-+              pr_err("Dedicated partitioner didn't create \"rootfs_data\" partition, please fill a bug report!\n");
-+      else
-+              pr_warn("Support for built-in \"rootfs_data\" splitter will be removed, please use CONFIG_MTD_SPLIT_SQUASHFS_ROOT\n");
-+
-+      split_size = part->mtd.size - (split_offset - part->offset);
-+      printk(KERN_INFO "mtd: partition \"%s\" created automatically, ofs=0x%x, len=0x%x\n",
-+              ROOTFS_SPLIT_NAME, split_offset, split_size);
-+
-+      __mtd_add_partition(master, ROOTFS_SPLIT_NAME, split_offset,
-+                          split_size, false);
-+}
-+
-+#define UBOOT_MAGIC   0x27051956
-+
-+static void split_uimage(struct mtd_info *master, struct mtd_part *part)
-+{
-+      struct {
-+              __be32 magic;
-+              __be32 pad[2];
-+              __be32 size;
-+      } hdr;
-+      size_t len;
-+
-+      if (mtd_read(master, part->offset, sizeof(hdr), &len, (void *) &hdr))
-+              return;
-+
-+      if (len != sizeof(hdr) || hdr.magic != cpu_to_be32(UBOOT_MAGIC))
-+              return;
-+
-+      len = be32_to_cpu(hdr.size) + 0x40;
-+      len = mtd_pad_erasesize(master, part->offset, len);
-+      if (len + master->erasesize > part->mtd.size)
-+              return;
-+
-+      __mtd_add_partition(master, "rootfs", part->offset + len,
-+                          part->mtd.size - len, false);
-+}
-+
 +#ifdef CONFIG_MTD_SPLIT_FIRMWARE_NAME
 +#define SPLIT_FIRMWARE_NAME   CONFIG_MTD_SPLIT_FIRMWARE_NAME
 +#else
@@ -215,8 +127,6 @@
 +
 +static void split_firmware(struct mtd_info *master, struct mtd_part *part)
 +{
-+      if (config_enabled(CONFIG_MTD_UIMAGE_SPLIT))
-+              split_uimage(master, part);
 +}
 +
 +void __weak arch_split_mtd_part(struct mtd_info *master, const char *name,
@@ -231,13 +141,6 @@
 +      if (rootfs_found)
 +              return;
 +
-+      if (!strcmp(part->mtd.name, "rootfs")) {
-+              rootfs_found = 1;
-+
-+              if (config_enabled(CONFIG_MTD_ROOTFS_SPLIT))
-+                      split_rootfs_data(master, part);
-+      }
-+
 +      if (!strcmp(part->mtd.name, SPLIT_FIRMWARE_NAME) &&
 +          config_enabled(CONFIG_MTD_SPLIT_FIRMWARE))
 +              split_firmware(master, part);
@@ -248,7 +151,7 @@
  /*
   * 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
-@@ -643,6 +773,7 @@ int add_mtd_partitions(struct mtd_info *
+@@ -643,6 +686,7 @@ int add_mtd_partitions(struct mtd_info *
                mutex_unlock(&mtd_partitions_mutex);
  
                add_mtd_device(&slave->mtd);