mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-12-31 00:01:10 +02:00
cea2b4210d
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@32953 3c298f89-4303-0410-b956-a3cf2f4a3e73
266 lines
7.0 KiB
Diff
266 lines
7.0 KiB
Diff
From 2a295753a10823a47542c779a25bbb1f52c71281 Mon Sep 17 00:00:00 2001
|
|
From: John Crispin <blogic@openwrt.org>
|
|
Date: Fri, 3 Aug 2012 10:27:13 +0200
|
|
Subject: [PATCH 19/25] owrt mtd split
|
|
|
|
---
|
|
.../mips/include/asm/mach-lantiq/xway/lantiq_soc.h | 1 +
|
|
arch/mips/lantiq/setup.c | 7 +
|
|
drivers/mtd/Kconfig | 4 +
|
|
drivers/mtd/mtdpart.c | 173 +++++++++++++++++++-
|
|
4 files changed, 184 insertions(+), 1 deletions(-)
|
|
|
|
diff --git a/arch/mips/include/asm/mach-lantiq/xway/lantiq_soc.h b/arch/mips/include/asm/mach-lantiq/xway/lantiq_soc.h
|
|
index 1ec8f2a..1ff93cc 100644
|
|
--- a/arch/mips/include/asm/mach-lantiq/xway/lantiq_soc.h
|
|
+++ b/arch/mips/include/asm/mach-lantiq/xway/lantiq_soc.h
|
|
@@ -166,6 +166,7 @@ extern unsigned char ltq_boot_select(void);
|
|
|
|
extern __iomem void *ltq_ebu_membase;
|
|
extern __iomem void *ltq_cgu_membase;
|
|
+extern unsigned long ltq_brn_boot;
|
|
|
|
static inline int ltq_is_ase(void)
|
|
{
|
|
diff --git a/arch/mips/lantiq/setup.c b/arch/mips/lantiq/setup.c
|
|
index 1ff6c9d..708e969 100644
|
|
--- a/arch/mips/lantiq/setup.c
|
|
+++ b/arch/mips/lantiq/setup.c
|
|
@@ -18,6 +18,9 @@
|
|
#include "devices.h"
|
|
#include "prom.h"
|
|
|
|
+/* set to 1 if the bootloader is BRN-BOOT instead of u-boot */
|
|
+unsigned long ltq_brn_boot = 0;
|
|
+
|
|
void __init plat_mem_setup(void)
|
|
{
|
|
/* assume 16M as default incase uboot fails to pass proper ramsize */
|
|
@@ -38,6 +41,10 @@ void __init plat_mem_setup(void)
|
|
if (strict_strtoul(e, 0, &memsize))
|
|
pr_warn("bad memsize specified\n");
|
|
}
|
|
+ if (!strncmp(e, "BRN-BOOT", 8)){
|
|
+ pr_info("Found BRN-BOOT instead of u-boot\n");
|
|
+ ltq_brn_boot = 1;
|
|
+ }
|
|
envp++;
|
|
}
|
|
memsize *= 1024 * 1024;
|
|
diff --git a/drivers/mtd/Kconfig b/drivers/mtd/Kconfig
|
|
index 982a98b..e2f3f3e 100644
|
|
--- a/drivers/mtd/Kconfig
|
|
+++ b/drivers/mtd/Kconfig
|
|
@@ -31,6 +31,10 @@ config MTD_ROOTFS_SPLIT
|
|
bool "Automatically split 'rootfs' partition for squashfs"
|
|
default y
|
|
|
|
+config MTD_UIMAGE_SPLIT
|
|
+ bool "Automatically split 'linux' partition into 'kernel' and 'rootfs'"
|
|
+ default y
|
|
+
|
|
config MTD_REDBOOT_PARTS
|
|
tristate "RedBoot partition table parsing"
|
|
---help---
|
|
diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c
|
|
index 855b70b..93711e2 100644
|
|
--- a/drivers/mtd/mtdpart.c
|
|
+++ b/drivers/mtd/mtdpart.c
|
|
@@ -867,6 +867,168 @@ static int refresh_rootfs_split(struct mtd_info *mtd)
|
|
}
|
|
#endif /* CONFIG_MTD_ROOTFS_SPLIT */
|
|
|
|
+#ifdef CONFIG_MTD_UIMAGE_SPLIT
|
|
+static unsigned long find_uimage_size(struct mtd_info *mtd,
|
|
+ unsigned long offset)
|
|
+{
|
|
+#define UBOOT_MAGIC 0x56190527
|
|
+ unsigned long magic = 0;
|
|
+ unsigned long temp;
|
|
+ size_t len;
|
|
+ int ret;
|
|
+
|
|
+ ret = mtd->read(mtd, offset, 4, &len, (void *)&magic);
|
|
+ if (ret || len != sizeof(magic))
|
|
+ return 0;
|
|
+
|
|
+ if (le32_to_cpu(magic) != UBOOT_MAGIC)
|
|
+ return 0;
|
|
+
|
|
+ ret = mtd->read(mtd, offset + 12, 4, &len, (void *)&temp);
|
|
+ if (ret || len != sizeof(temp))
|
|
+ return 0;
|
|
+
|
|
+ return temp + 0x40;
|
|
+}
|
|
+
|
|
+static unsigned long find_eva_size(struct mtd_info *mtd,
|
|
+ unsigned long offset)
|
|
+{
|
|
+#define EVA_MAGIC 0xfeed1281
|
|
+ unsigned long magic = 0;
|
|
+ unsigned long temp;
|
|
+ size_t len;
|
|
+ int ret;
|
|
+
|
|
+ ret = mtd->read(mtd, offset, 4, &len, (void *)&magic);
|
|
+ if (ret || len != sizeof(magic))
|
|
+ return 0;
|
|
+
|
|
+ if (le32_to_cpu(magic) != EVA_MAGIC)
|
|
+ return 0;
|
|
+
|
|
+ ret = mtd->read(mtd, offset + 4, 4, &len, (void *)&temp);
|
|
+ if (ret || len != sizeof(temp))
|
|
+ return 0;
|
|
+
|
|
+ /* add eva header size */
|
|
+ temp = le32_to_cpu(temp) + 0x18;
|
|
+
|
|
+ temp &= ~0xffff;
|
|
+ temp += 0x10000;
|
|
+ return temp;
|
|
+}
|
|
+
|
|
+static int detect_squashfs_partition(struct mtd_info *mtd, unsigned long offset)
|
|
+{
|
|
+ unsigned long temp;
|
|
+ size_t len;
|
|
+ int ret;
|
|
+
|
|
+ ret = mtd->read(mtd, offset, 4, &len, (void *)&temp);
|
|
+ if (ret || len != sizeof(temp))
|
|
+ return 0;
|
|
+
|
|
+
|
|
+ return le32_to_cpu(temp) == SQUASHFS_MAGIC;
|
|
+}
|
|
+
|
|
+static int detect_eva_squashfs_partition(struct mtd_info *mtd, unsigned long offset)
|
|
+{
|
|
+ unsigned long temp;
|
|
+ size_t len;
|
|
+ int ret;
|
|
+
|
|
+ ret = mtd->read(mtd, offset, 4, &len, (void *)&temp);
|
|
+ if (ret || len != sizeof(temp))
|
|
+ return 0;
|
|
+
|
|
+ return be32_to_cpu(temp) == SQUASHFS_MAGIC;
|
|
+}
|
|
+
|
|
+static unsigned long find_brnimage_size(struct mtd_info *mtd,
|
|
+ unsigned long offset)
|
|
+{
|
|
+ unsigned long buf[4];
|
|
+ // Assume at most 2MB of kernel image
|
|
+ unsigned long end = offset + (2 << 20);
|
|
+ unsigned long ptr = offset + 0x400 - 12;
|
|
+ size_t len;
|
|
+ int ret;
|
|
+
|
|
+ while (ptr < end) {
|
|
+ long size_min = ptr - 0x400 - 12 - offset;
|
|
+ long size_max = ptr + 12 - offset;
|
|
+ ret = mtd->read(mtd, ptr, 16, &len, (void *)buf);
|
|
+ if (ret || len != 16)
|
|
+ return 0;
|
|
+
|
|
+ if (le32_to_cpu(buf[0]) < size_min ||
|
|
+ le32_to_cpu(buf[0]) > size_max) {
|
|
+ ptr += 0x400;
|
|
+ continue;
|
|
+ }
|
|
+
|
|
+ if (le32_to_cpu(buf[3]) == SQUASHFS_MAGIC)
|
|
+ return ptr + 12 - offset;
|
|
+
|
|
+ ptr += 0x400;
|
|
+ }
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static int split_uimage(struct mtd_info *mtd,
|
|
+ const struct mtd_partition *part)
|
|
+{
|
|
+ static struct mtd_partition split_partitions[] = {
|
|
+ {
|
|
+ .name = "kernel",
|
|
+ .offset = 0x0,
|
|
+ .size = 0x0,
|
|
+ }, {
|
|
+ .name = "rootfs",
|
|
+ .offset = 0x0,
|
|
+ .size = 0x0,
|
|
+ },
|
|
+ };
|
|
+
|
|
+ split_partitions[0].size = find_uimage_size(mtd, part->offset);
|
|
+ if (!split_partitions[0].size) {
|
|
+ split_partitions[0].size = find_eva_size(mtd, part->offset);
|
|
+ if (!split_partitions[0].size) {
|
|
+ split_partitions[0].size = find_brnimage_size(mtd, part->offset);
|
|
+ if (!split_partitions[0].size) {
|
|
+ printk(KERN_NOTICE "no uImage or brnImage or eva found in linux partition\n");
|
|
+ return -1;
|
|
+ }
|
|
+ }
|
|
+ }
|
|
+
|
|
+ if (detect_eva_squashfs_partition(mtd,
|
|
+ part->offset
|
|
+ + split_partitions[0].size)) {
|
|
+ split_partitions[0].size += 0x100;
|
|
+ pr_info("found eva dummy squashfs behind kernel\n");
|
|
+ } else if (!detect_squashfs_partition(mtd,
|
|
+ part->offset
|
|
+ + split_partitions[0].size)) {
|
|
+ split_partitions[0].size &= ~(mtd->erasesize - 1);
|
|
+ split_partitions[0].size += mtd->erasesize;
|
|
+ } else {
|
|
+ pr_info("found squashfs behind kernel\n");
|
|
+ }
|
|
+
|
|
+ split_partitions[0].offset = part->offset;
|
|
+ split_partitions[1].offset = part->offset + split_partitions[0].size;
|
|
+ split_partitions[1].size = part->size - split_partitions[0].size;
|
|
+
|
|
+ add_mtd_partitions(mtd, split_partitions, 2);
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+#endif
|
|
+
|
|
/*
|
|
* 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
|
|
@@ -883,7 +1045,7 @@ int add_mtd_partitions(struct mtd_info *master,
|
|
struct mtd_part *slave;
|
|
uint64_t cur_offset = 0;
|
|
int i;
|
|
-#ifdef CONFIG_MTD_ROOTFS_SPLIT
|
|
+#if defined(CONFIG_MTD_ROOTFS_SPLIT) || defined(CONFIG_MTD_UIMAGE_SPLIT)
|
|
int ret;
|
|
#endif
|
|
|
|
@@ -900,6 +1062,15 @@ int add_mtd_partitions(struct mtd_info *master,
|
|
|
|
add_mtd_device(&slave->mtd);
|
|
|
|
+#ifdef CONFIG_MTD_UIMAGE_SPLIT
|
|
+ if (!strcmp(parts[i].name, "linux")) {
|
|
+ ret = split_uimage(master, &parts[i]);
|
|
+
|
|
+ if (ret)
|
|
+ printk(KERN_WARNING "Can't split linux partition\n");
|
|
+ }
|
|
+#endif
|
|
+
|
|
if (!strcmp(parts[i].name, "rootfs")) {
|
|
#ifdef CONFIG_MTD_ROOTFS_ROOT_DEV
|
|
if (ROOT_DEV == 0) {
|
|
--
|
|
1.7.9.1
|
|
|