lantiq: fix eva partition split for squashfs

Signed-off-by: John Crispin <blogic@openwrt.org>
SVN-Revision: 38325

diff --git a/target/linux/lantiq/patches-3.10/0100-mtd-split.patch b/target/linux/lantiq/patches-3.10/0100-mtd-split.patch
index 6315203069c886187737c6c4e84fa1a7fd7c6183..f83600f199abd49428a78e6b931f362e79761ac1 100644 (file)
--- a/target/linux/lantiq/patches-3.10/0100-mtd-split.patch
+++ b/target/linux/lantiq/patches-3.10/0100-mtd-split.patch
@@ -1,5 +1,7 @@
---- a/arch/mips/lantiq/xway/Makefile
-+++ b/arch/mips/lantiq/xway/Makefile
+Index: linux-3.10.13/arch/mips/lantiq/xway/Makefile
+===================================================================
+--- linux-3.10.13.orig/arch/mips/lantiq/xway/Makefile  2013-10-01 00:07:55.165279437 +0200
++++ linux-3.10.13/arch/mips/lantiq/xway/Makefile       2013-10-01 00:10:24.269285811 +0200
 @@ -1,6 +1,6 @@
  obj-y := prom.o sysctrl.o clk.o reset.o dma.o gptu.o dcdc.o
  
@@ -8,9 +10,11 @@
  
  obj-$(CONFIG_PCI) += ath_eep.o rt_eep.o pci-ath-fixup.o
  
---- /dev/null
-+++ b/arch/mips/lantiq/xway/mtd_split.c
-@@ -0,0 +1,151 @@
+Index: linux-3.10.13/arch/mips/lantiq/xway/mtd_split.c
+===================================================================
+--- /dev/null  1970-01-01 00:00:00.000000000 +0000
++++ linux-3.10.13/arch/mips/lantiq/xway/mtd_split.c    2013-10-01 00:11:28.745288566 +0200
+@@ -0,0 +1,129 @@
 +#include <linux/magic.h>
 +#include <linux/root_dev.h>
 +#include <linux/mtd/mtd.h>
@@ -64,7 +68,7 @@
 +{
 +#define EVA_MAGIC   0xfeed1281
 +      unsigned long magic = 0;
-+      unsigned long part_size = 0;
++      unsigned long part_size = 0, p;
 +      size_t len;
 +      int ret;
 +
@@ -82,8 +86,19 @@
 +      if (ret || len != sizeof(part_size))
 +              return;
 +
-+      part_size = le32_to_cpu(part_size) + 0x18;
-+      part_size = mtd_pad_erasesize(master, offset, len);
++      p = part_size = le32_to_cpu(part_size) + 0x18;
++      p &= ~0xffff;
++      p += 0x10000;
++
++      ret = mtd_read(master, offset + p, 4, &len, (void *)&magic);
++      if (ret || len != sizeof(magic))
++              return;
++
++      if (magic == SQUASHFS_MAGIC)
++              part_size = p + 0x100;
++      else
++              part_size = mtd_pad_erasesize(master, offset, len);
++
 +      if (part_size + master->erasesize > size)
 +              return;
 +
@@ -122,49 +137,18 @@
 +                          size - part_size, false);
 +}
 +
-+static void split_squashfs(struct mtd_info *master, const char *name,
-+                              int offset, int size)
-+{
-+      struct squashfs_super_block sb;
-+      int len, ret;
-+
-+      offset += 0x100;
-+      size -= 0x100;
-+
-+      ret = mtd_read(master, offset, sizeof(sb), &len, (void *) &sb);
-+      if (ret || (len != sizeof(sb)))
-+              return;
-+
-+      if (SQUASHFS_MAGIC != le32_to_cpu(sb.s_magic) )
-+              return;
-+
-+      if (le64_to_cpu((sb.bytes_used)) <= 0)
-+              printk(KERN_ALERT "split_squashfs: squashfs is empty in \"%s\"\n",
-+                      master->name);
-+              return;
-+
-+      len = (u32) le64_to_cpu(sb.bytes_used);
-+      len = mtd_pad_erasesize(master, offset, len);
-+      offset += len;
-+      size -= len ;
-+      printk(KERN_INFO "mtd: partition \"%s\" created automatically, ofs=0x%x, len=0x%x\n",
-+              ROOTFS_SPLIT_NAME, offset, size);
-+
-+      __mtd_add_partition(master, ROOTFS_SPLIT_NAME, offset,
-+                          size, false);
-+}
-+
 +void arch_split_mtd_part(struct mtd_info *master, const char *name,
 +                              int offset, int size)
 +{
 +      split_tplink_kernel(master, name, offset, size);
 +      split_eva_kernel(master, name, offset, size);
 +      split_brnimage_kernel(master, name, offset, size);
-+      split_squashfs(master, name, offset, size);
 +}
---- a/include/linux/mtd/partitions.h
-+++ b/include/linux/mtd/partitions.h
-@@ -89,12 +89,17 @@ extern int deregister_mtd_parser(struct
+Index: linux-3.10.13/include/linux/mtd/partitions.h
+===================================================================
+--- linux-3.10.13.orig/include/linux/mtd/partitions.h  2013-10-01 00:07:55.165279437 +0200
++++ linux-3.10.13/include/linux/mtd/partitions.h       2013-10-01 00:08:03.889279810 +0200
+@@ -89,12 +89,17 @@
  int mtd_is_partition(const struct mtd_info *mtd);
  int mtd_add_partition(struct mtd_info *master, char *name,
                      long long offset, long long length);
@@ -184,9 +168,11 @@
  
  int parse_mtd_partitions_by_type(struct mtd_info *master,
                                 enum mtd_parser_type type,
---- a/drivers/mtd/mtdpart.c
-+++ b/drivers/mtd/mtdpart.c
-@@ -616,7 +616,7 @@ out_register:
+Index: linux-3.10.13/drivers/mtd/mtdpart.c
+===================================================================
+--- linux-3.10.13.orig/drivers/mtd/mtdpart.c   2013-10-01 00:07:55.165279437 +0200
++++ linux-3.10.13/drivers/mtd/mtdpart.c        2013-10-01 00:08:03.893279810 +0200
+@@ -616,7 +616,7 @@
  }
  
  
@@ -195,7 +181,7 @@
  __mtd_add_partition(struct mtd_info *master, char *name,
                    long long offset, long long length, bool dup_check)
  {
-@@ -737,7 +737,7 @@ run_parsers_by_type(struct mtd_part *sla
+@@ -737,7 +737,7 @@
        return nr_parts;
  }
  
@@ -204,7 +190,7 @@
  mtd_pad_erasesize(struct mtd_info *mtd, int offset, int len)
  {
        unsigned long mask = mtd->erasesize - 1;
-@@ -806,7 +806,6 @@ static void split_uimage(struct mtd_info
+@@ -806,7 +806,6 @@
                return;
  
        len = be32_to_cpu(hdr.size) + 0x40;