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authorJohn Crispin <john@openwrt.org>2008-05-03 19:40:15 +0000
committerJohn Crispin <john@openwrt.org>2008-05-03 19:40:15 +0000
commit37f2ef0e72c46c69f6227c78b8bd8312a6a41839 (patch)
tree46048443af0db881a113039b1b42a448b6f0cb25 /target/linux/etrax
parentcc3c8739f20e873f64f68b2b90e14440ecc96c2d (diff)
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implement openwrt compliant flashmap
SVN-Revision: 11035
Diffstat (limited to 'target/linux/etrax')
-rw-r--r--target/linux/etrax/patches/201-flashsize.patch92
1 files changed, 92 insertions, 0 deletions
diff --git a/target/linux/etrax/patches/201-flashsize.patch b/target/linux/etrax/patches/201-flashsize.patch
new file mode 100644
index 0000000000..4982963d34
--- /dev/null
+++ b/target/linux/etrax/patches/201-flashsize.patch
@@ -0,0 +1,92 @@
+Index: linux-2.6.25.1/arch/cris/arch-v10/lib/hw_settings.S
+===================================================================
+--- linux-2.6.25.1.orig/arch/cris/arch-v10/lib/hw_settings.S 2008-05-03 20:25:16.000000000 +0100
++++ linux-2.6.25.1/arch/cris/arch-v10/lib/hw_settings.S 2008-05-03 20:25:35.000000000 +0100
+@@ -60,3 +60,5 @@
+ .dword R_PORT_PB_SET
+ .dword PB_SET_VALUE
+ .dword 0 ; No more register values
++ .ascii "ACME_PART_MAGIC"
++ .dword 0xdeadc0de
+Index: linux-2.6.25.1/arch/cris/arch-v10/drivers/axisflashmap.c
+===================================================================
+--- linux-2.6.25.1.orig/arch/cris/arch-v10/drivers/axisflashmap.c 2008-05-03 20:27:28.000000000 +0100
++++ linux-2.6.25.1/arch/cris/arch-v10/drivers/axisflashmap.c 2008-05-03 20:34:54.000000000 +0100
+@@ -113,7 +113,7 @@
+
+ /* If no partition-table was found, we use this default-set. */
+ #define MAX_PARTITIONS 7
+-#define NUM_DEFAULT_PARTITIONS 3
++#define NUM_DEFAULT_PARTITIONS 2
+
+ /*
+ * Default flash size is 2MB. CONFIG_ETRAX_PTABLE_SECTOR is most likely the
+@@ -122,19 +122,14 @@
+ */
+ static struct mtd_partition axis_default_partitions[NUM_DEFAULT_PARTITIONS] = {
+ {
+- .name = "boot firmware",
+- .size = CONFIG_ETRAX_PTABLE_SECTOR,
+- .offset = 0
+- },
+- {
+ .name = "kernel",
+- .size = 0x200000 - (6 * CONFIG_ETRAX_PTABLE_SECTOR),
+- .offset = CONFIG_ETRAX_PTABLE_SECTOR
++ .size = 0x00,
++ .offset = 0
+ },
+ {
+- .name = "filesystem",
+- .size = 5 * CONFIG_ETRAX_PTABLE_SECTOR,
+- .offset = 0x200000 - (5 * CONFIG_ETRAX_PTABLE_SECTOR)
++ .name = "rootfs",
++ .size = 0x200000 ,
++ .offset = 0x200000
+ }
+ };
+
+@@ -281,6 +276,11 @@
+ struct partitiontable_entry *ptable;
+ int use_default_ptable = 1; /* Until proven otherwise. */
+ const char pmsg[] = " /dev/flash%d at 0x%08x, size 0x%08x\n";
++ unsigned int kernel_part_size = 0;
++ unsigned char *flash_mem = (unsigned char*)(FLASH_CACHED_ADDR);
++ unsigned int flash_scan_count = 0;
++ const char *part_magic = "ACME_PART_MAGIC";
++ unsigned int magic_len = strlen(part_magic);
+
+ if (!(mymtd = flash_probe())) {
+ /* There's no reason to use this module if no flash chip can
+@@ -292,6 +292,31 @@
+ mymtd->name, mymtd->size);
+ axisflash_mtd = mymtd;
+ }
++ /* scan flash to findout where out partition starts */
++
++ printk(KERN_INFO "Scanning flash for end of kernel magic\n");
++ for(flash_scan_count = 0; flash_scan_count < 100000; flash_scan_count++){
++ if(strncmp(&flash_mem[flash_scan_count], part_magic, magic_len - 1) == 0)
++ {
++ kernel_part_size = flash_mem[flash_scan_count + magic_len ];
++ kernel_part_size <<= 8;
++ kernel_part_size += flash_mem[flash_scan_count + magic_len + 2];
++ kernel_part_size <<= 8;
++ kernel_part_size += flash_mem[flash_scan_count + magic_len + 1];
++ kernel_part_size <<= 8;
++ kernel_part_size += flash_mem[flash_scan_count + magic_len + 3];
++ printk(KERN_INFO "Kernel ends at 0x%.08X\n", kernel_part_size);
++ flash_scan_count = 1100000;
++ }
++ }
++
++
++ if(kernel_part_size){
++ kernel_part_size = (kernel_part_size & 0xffff0000);
++ axis_default_partitions[0].size = kernel_part_size;
++ axis_default_partitions[1].size = mymtd->size - axis_default_partitions[0].size;
++ axis_default_partitions[1].offset = axis_default_partitions[0].size;
++ }
+
+ if (mymtd) {
+ mymtd->owner = THIS_MODULE;