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authorRafał Miłecki <zajec5@gmail.com>2014-12-13 20:06:47 +0000
committerRafał Miłecki <zajec5@gmail.com>2014-12-13 20:06:47 +0000
commit2b4fbeb6d4f77fe3cb441a36f26a577166df381a (patch)
tree549347edf8c99e78c47352ae9e2e43ea4a2da112 /target/linux/generic/patches-3.18/400-mtd-add-rootfs-split-support.patch
parent0fa857f3bad4ee0c385aa3fac6defa97e3e1b991 (diff)
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kernel: move old firmware uimage splitter into separated patch
This will allow us to drop it in the future. This patch doesn't change the final mtdpart.c, it remains the same. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> SVN-Revision: 43696
Diffstat (limited to 'target/linux/generic/patches-3.18/400-mtd-add-rootfs-split-support.patch')
-rw-r--r--target/linux/generic/patches-3.18/400-mtd-add-rootfs-split-support.patch50
1 files changed, 3 insertions, 47 deletions
diff --git a/target/linux/generic/patches-3.18/400-mtd-add-rootfs-split-support.patch b/target/linux/generic/patches-3.18/400-mtd-add-rootfs-split-support.patch
index 6ec19b1..597adf5 100644
--- a/target/linux/generic/patches-3.18/400-mtd-add-rootfs-split-support.patch
+++ b/target/linux/generic/patches-3.18/400-mtd-add-rootfs-split-support.patch
@@ -1,6 +1,6 @@
--- a/drivers/mtd/Kconfig
+++ b/drivers/mtd/Kconfig
-@@ -12,6 +12,28 @@ menuconfig MTD
+@@ -12,6 +12,23 @@ menuconfig MTD
if MTD
@@ -19,11 +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
@@ -120,47 +115,10 @@
int mtd_del_partition(struct mtd_info *master, int partno)
{
struct mtd_part *slave, *next;
-@@ -627,6 +641,74 @@ int mtd_del_partition(struct mtd_info *m
+@@ -627,6 +641,35 @@ 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;
-+}
-+
-+#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
@@ -169,8 +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,
@@ -195,7 +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
-@@ -656,6 +738,7 @@ int add_mtd_partitions(struct mtd_info *
+@@ -656,6 +699,7 @@ int add_mtd_partitions(struct mtd_info *
mutex_unlock(&mtd_partitions_mutex);
add_mtd_device(&slave->mtd);