From ffec4f291341a1e158b8c13d51219fa7ecfae244 Mon Sep 17 00:00:00 2001
From: Gabor Juhos <juhosg@openwrt.org>
Date: Mon, 1 Oct 2007 09:51:32 +0000
Subject: [PATCH] prepare trxsplit to support sysupgrade
SVN-Revision: 9085
---
.../adm5120/files/arch/mips/adm5120/Makefile | 2 -
.../mips/adm5120 => drivers/mtd}/trxsplit.c | 109 ++++++++++--------
.../patches-2.6.22/103-mtd_trxsplit.patch | 28 +++++
target/linux/adm5120/router_be/config-2.6.22 | 1 +
target/linux/adm5120/router_le/config-2.6.22 | 3 +-
5 files changed, 95 insertions(+), 48 deletions(-)
rename target/linux/adm5120/files/{arch/mips/adm5120 => drivers/mtd}/trxsplit.c (79%)
create mode 100644 target/linux/adm5120/patches-2.6.22/103-mtd_trxsplit.patch
diff --git a/target/linux/adm5120/files/arch/mips/adm5120/Makefile b/target/linux/adm5120/files/arch/mips/adm5120/Makefile
index 583d1d12c1..2a5f391f25 100644
--- a/target/linux/adm5120/files/arch/mips/adm5120/Makefile
+++ b/target/linux/adm5120/files/arch/mips/adm5120/Makefile
@@ -9,5 +9,3 @@ obj-y += gpio.o
obj-y += platform.o
obj-y += reset.o
obj-y += time.o
-
-obj-y += trxsplit.o
diff --git a/target/linux/adm5120/files/arch/mips/adm5120/trxsplit.c b/target/linux/adm5120/files/drivers/mtd/trxsplit.c
similarity index 79%
rename from target/linux/adm5120/files/arch/mips/adm5120/trxsplit.c
rename to target/linux/adm5120/files/drivers/mtd/trxsplit.c
index 941f306950..ad0e25a113 100644
--- a/target/linux/adm5120/files/arch/mips/adm5120/trxsplit.c
+++ b/target/linux/adm5120/files/drivers/mtd/trxsplit.c
@@ -59,7 +59,9 @@ static int trx_nr_parts = 0;
static struct mtd_partition trx_parts[TRX_MAX_OFFSET];
static struct trx_header trx_hdr;
-static int __init trxsplit_checktrx(struct mtd_info *mtd, unsigned long offset)
+static int trxsplit_refresh_partitions(struct mtd_info *mtd);
+
+static int trxsplit_checktrx(struct mtd_info *mtd, unsigned long offset)
{
size_t retlen;
int err;
@@ -98,17 +100,39 @@ err_out:
return -1;
}
-static int __init trxsplit_create_partitions(void)
+static void trxsplit_findtrx(struct mtd_info *mtd)
{
- struct mtd_partition *part = trx_parts;
- int ret = 0;
- int i;
+ unsigned long offset;
+ unsigned long blocklen;
+ int err;
- if (trx_mtd == NULL)
- goto out;
+ blocklen = mtd->erasesize;
+ if (blocklen < BLOCK_LEN_MIN)
+ blocklen = BLOCK_LEN_MIN;
- printk(KERN_INFO PFX "creating TRX partitions in '%s' (%d,%d)\n",
- trx_mtd->name, MTD_BLOCK_MAJOR, trx_mtd->index);
+ printk(KERN_INFO PFX "searching TRX header in '%s'\n", mtd->name);
+
+ err = 0;
+ for (offset=0; offset < mtd->size; offset+=blocklen) {
+ err = trxsplit_checktrx(mtd, offset);
+ if (err == 0)
+ break;
+ }
+
+ if (err)
+ return;
+
+ printk(KERN_INFO PFX "TRX header found at 0x%lX\n", offset);
+
+ trx_mtd = mtd;
+ trx_offset = offset;
+}
+
+static void trxsplit_create_partitions(struct mtd_info *mtd)
+{
+ struct mtd_partition *part = trx_parts;
+ int err;
+ int i;
for (i=0; i<TRX_MAX_OFFSET;i++) {
part = &trx_parts[i];
@@ -121,7 +145,7 @@ static int __init trxsplit_create_partitions(void)
for (i=0; i<trx_nr_parts-1; i++) {
trx_parts[i].size = trx_parts[i+1].offset - trx_parts[i].offset;
}
- trx_parts[i].size = trx_mtd->size - trx_parts[i].offset;
+ trx_parts[i].size = mtd->size - trx_parts[i].offset;
i=0;
part = &trx_parts[i];
@@ -137,46 +161,38 @@ static int __init trxsplit_create_partitions(void)
part = &trx_parts[i];
part->name = "rootfs";
- ret = add_mtd_partitions(trx_mtd, trx_parts, trx_nr_parts);
- if (ret) {
- printk(KERN_ALERT PFX "creating TRX partitions failed\n");
+ err = add_mtd_partitions(mtd, trx_parts, trx_nr_parts);
+ if (err) {
+ printk(KERN_ALERT PFX "adding TRX partitions failed\n");
+ return;
}
-out:
- return ret;
+ mtd->refresh_device = trxsplit_refresh_partitions;
}
-static void __init trxsplit_add_mtd(struct mtd_info *mtd)
+static int trxsplit_refresh_partitions(struct mtd_info *mtd)
{
- unsigned long offset;
- unsigned long blocklen;
- int err;
+ printk(KERN_INFO PFX "refreshing TRX partitions in '%s' (%d,%d)\n",
+ mtd->name, MTD_BLOCK_MAJOR, mtd->index);
- if (trx_mtd)
- return;
+ /* remove old partitions */
+ del_mtd_partitions(mtd);
- blocklen = mtd->erasesize;
- if (blocklen < BLOCK_LEN_MIN)
- blocklen = BLOCK_LEN_MIN;
-
- printk(KERN_INFO PFX "searching TRX header in '%s'\n", mtd->name);
-
- err = 0;
- for (offset=0; offset < mtd->size; offset+=blocklen) {
- err = trxsplit_checktrx(mtd, offset);
- if (err == 0)
- break;
- }
+ trxsplit_findtrx(mtd);
+ if (!trx_mtd)
+ goto err;
- if (err) {
- printk(KERN_ALERT PFX "no TRX header found\n");
- return;
- }
+ trxsplit_create_partitions(trx_mtd);
+ return 1;
- printk(KERN_INFO PFX "TRX header found at 0x%lX\n", offset);
+err:
+ return 0;
+}
- trx_mtd = mtd;
- trx_offset = offset;
+static void __init trxsplit_add_mtd(struct mtd_info *mtd)
+{
+ if (!trx_mtd)
+ trxsplit_findtrx(mtd);
}
static void __init trxsplit_remove_mtd(struct mtd_info *mtd)
@@ -189,7 +205,7 @@ static struct mtd_notifier trxsplit_notifier __initdata = {
.remove = trxsplit_remove_mtd,
};
-static void __init trxsplit_find_trx(void)
+static void __init trxsplit_scan(void)
{
register_mtd_user(&trxsplit_notifier);
unregister_mtd_user(&trxsplit_notifier);
@@ -197,12 +213,15 @@ static void __init trxsplit_find_trx(void)
static int __init trxsplit_init(void)
{
- int ret;
+ trxsplit_scan();
- trxsplit_find_trx();
+ if (trx_mtd) {
+ printk(KERN_INFO PFX "creating TRX partitions in '%s' (%d,%d)\n",
+ trx_mtd->name, MTD_BLOCK_MAJOR, trx_mtd->index);
+ trxsplit_create_partitions(trx_mtd);
+ }
- ret = trxsplit_create_partitions();
- return ret;
+ return 0;
}
late_initcall(trxsplit_init);
diff --git a/target/linux/adm5120/patches-2.6.22/103-mtd_trxsplit.patch b/target/linux/adm5120/patches-2.6.22/103-mtd_trxsplit.patch
new file mode 100644
index 0000000000..c623bc42e4
--- /dev/null
+++ b/target/linux/adm5120/patches-2.6.22/103-mtd_trxsplit.patch
@@ -0,0 +1,28 @@
+Index: linux-2.6.22.4/drivers/mtd/Kconfig
+===================================================================
+--- linux-2.6.22.4.orig/drivers/mtd/Kconfig
++++ linux-2.6.22.4/drivers/mtd/Kconfig
+@@ -57,6 +57,11 @@ config MTD_ROOTFS_SPLIT
+ depends on MTD_PARTITIONS
+ default y
+
++config MTD_TRXSPLIT
++ bool "Automatically find and split TRX partitions"
++ depends on MTD_PARTITIONS
++ default n
++
+ config MTD_REDBOOT_PARTS
+ tristate "RedBoot partition table parsing"
+ depends on MTD_PARTITIONS
+Index: linux-2.6.22.4/drivers/mtd/Makefile
+===================================================================
+--- linux-2.6.22.4.orig/drivers/mtd/Makefile
++++ linux-2.6.22.4/drivers/mtd/Makefile
+@@ -8,6 +8,7 @@ mtd-$(CONFIG_MTD_PARTITIONS) += mtdpart.
+ obj-$(CONFIG_MTD) += $(mtd-y)
+
+ obj-$(CONFIG_MTD_CONCAT) += mtdconcat.o
++obj-$(CONFIG_MTD_TRXSPLIT) += trxsplit.o
+ obj-$(CONFIG_MTD_REDBOOT_PARTS) += redboot.o
+ obj-$(CONFIG_MTD_CMDLINE_PARTS) += cmdlinepart.o
+ obj-$(CONFIG_MTD_AFS_PARTS) += afs.o
diff --git a/target/linux/adm5120/router_be/config-2.6.22 b/target/linux/adm5120/router_be/config-2.6.22
index 85aad4ea71..43476e2321 100644
--- a/target/linux/adm5120/router_be/config-2.6.22
+++ b/target/linux/adm5120/router_be/config-2.6.22
@@ -164,6 +164,7 @@ CONFIG_MTD_PARTITIONS=y
# CONFIG_MTD_REDBOOT_PARTS is not set
# CONFIG_MTD_ROM is not set
# CONFIG_MTD_SLRAM is not set
+CONFIG_MTD_TRXSPLIT=y
CONFIG_NETDEV_1000=y
CONFIG_NET_KEY=y
# CONFIG_NET_PCI is not set
diff --git a/target/linux/adm5120/router_le/config-2.6.22 b/target/linux/adm5120/router_le/config-2.6.22
index c67e1404c6..a331c2a134 100644
--- a/target/linux/adm5120/router_le/config-2.6.22
+++ b/target/linux/adm5120/router_le/config-2.6.22
@@ -123,7 +123,7 @@ CONFIG_MTD=y
CONFIG_MTD_ADM5120=y
CONFIG_MTD_BLKDEVS=y
CONFIG_MTD_BLOCK=y
-CONFIG_MTD_BLOCK2MTD=y
+# CONFIG_MTD_BLOCK2MTD is not set
CONFIG_MTD_CFI=y
# CONFIG_MTD_CFI_ADV_OPTIONS is not set
CONFIG_MTD_CFI_AMDSTD=y
@@ -174,6 +174,7 @@ CONFIG_MTD_PARTITIONS=y
# CONFIG_MTD_REDBOOT_PARTS is not set
# CONFIG_MTD_ROM is not set
# CONFIG_MTD_SLRAM is not set
+CONFIG_MTD_TRXSPLIT=y
# CONFIG_NETDEV_1000 is not set
CONFIG_NET_KEY=y
# CONFIG_NET_PCI is not set
--
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