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lantiq: fix eva partition split for squashfs

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

SVN-Revision: 38325
This commit is contained in:
John Crispin 2013-10-07 15:02:48 +00:00
parent c903de043e
commit 1398a5d849
1 changed files with 35 additions and 49 deletions
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82
target/linux/lantiq/patches-3.10/0100-mtd-split.patch
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@ -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;
+ 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;