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add initial support for the crisarchitecture used on foxboards to openwrt
[openwrt/svn-archive/archive.git] / target / linux / etrax-2.6 / patches / cris / 014-partition-tables.patch
diff --git a/target/linux/etrax-2.6/patches/cris/014-partition-tables.patch b/target/linux/etrax-2.6/patches/cris/014-partition-tables.patch
new file mode 100644 (file)
index 0000000..d32762a
--- /dev/null
+++ b/target/linux/etrax-2.6/patches/cris/014-partition-tables.patch
@@ -0,0 +1,102 @@
+diff -urN linux-2.6.19.2.orig/arch/cris/arch-v10/boot/compressed/hw_settings.S linux-2.6.19.2/arch/cris/arch-v10/boot/compressed/hw_settings.S
+--- linux-2.6.19.2.orig/arch/cris/arch-v10/boot/compressed/hw_settings.S       2007-05-29 23:30:35.000000000 +0200
++++ linux-2.6.19.2/arch/cris/arch-v10/boot/compressed/hw_settings.S    2007-05-29 23:33:44.000000000 +0200
+@@ -60,3 +60,5 @@
+       .dword R_PORT_PB_SET
+       .dword PB_SET_VALUE
+       .dword 0 ; No more register values
++      .ascii "ACME_PART_MAGIC" ; Magic number
++      .dword 0xdeadc0de
+diff -urN linux-2.6.19.2.orig/arch/cris/arch-v10/boot/compressed/hw_settings_416.S linux-2.6.19.2/arch/cris/arch-v10/boot/compressed/hw_settings_416.S
+--- linux-2.6.19.2.orig/arch/cris/arch-v10/boot/compressed/hw_settings_416.S   2007-05-29 23:30:35.000000000 +0200
++++ linux-2.6.19.2/arch/cris/arch-v10/boot/compressed/hw_settings_416.S        2007-05-29 23:33:44.000000000 +0200
+@@ -60,3 +60,5 @@
+       .dword R_PORT_PB_SET
+       .dword PB_SET_VALUE
+       .dword 0 ; No more register values
++      .ascii "ACME_PART_MAGIC" ; Magic number
++      .dword 0xdeadc0de
+diff -urN linux-2.6.19.2.orig/arch/cris/arch-v10/boot/compressed/hw_settings_816.S linux-2.6.19.2/arch/cris/arch-v10/boot/compressed/hw_settings_816.S
+--- linux-2.6.19.2.orig/arch/cris/arch-v10/boot/compressed/hw_settings_816.S   2007-05-29 23:30:35.000000000 +0200
++++ linux-2.6.19.2/arch/cris/arch-v10/boot/compressed/hw_settings_816.S        2007-05-29 23:33:44.000000000 +0200
+@@ -60,3 +60,5 @@
+       .dword R_PORT_PB_SET
+       .dword PB_SET_VALUE
+       .dword 0 ; No more register values
++      .ascii "ACME_PART_MAGIC" ; Magic number
++      .dword 0xdeadc0de
+diff -urN linux-2.6.19.2.orig/arch/cris/arch-v10/boot/compressed/hw_settings_832.S linux-2.6.19.2/arch/cris/arch-v10/boot/compressed/hw_settings_832.S
+--- linux-2.6.19.2.orig/arch/cris/arch-v10/boot/compressed/hw_settings_832.S   2007-05-29 23:30:35.000000000 +0200
++++ linux-2.6.19.2/arch/cris/arch-v10/boot/compressed/hw_settings_832.S        2007-05-29 23:33:44.000000000 +0200
+@@ -60,3 +60,5 @@
+       .dword R_PORT_PB_SET
+       .dword PB_SET_VALUE
+       .dword 0 ; No more register values
++      .ascii "ACME_PART_MAGIC" ; Magic number
++      .dword 0xdeadc0de
+diff -urN linux-2.6.19.2.orig/arch/cris/arch-v10/boot/compressed/hw_settings_MCM.S linux-2.6.19.2/arch/cris/arch-v10/boot/compressed/hw_settings_MCM.S
+--- linux-2.6.19.2.orig/arch/cris/arch-v10/boot/compressed/hw_settings_MCM.S   2007-05-29 23:30:35.000000000 +0200
++++ linux-2.6.19.2/arch/cris/arch-v10/boot/compressed/hw_settings_MCM.S        2007-05-29 23:33:44.000000000 +0200
+@@ -60,3 +60,5 @@
+       .dword R_PORT_PB_SET
+       .dword PB_SET_VALUE
+       .dword 0 ; No more register values
++      .ascii "ACME_PART_MAGIC" ; Magic number
++      .dword 0xdeadc0de
+diff -urN linux-2.6.19.2.orig/arch/cris/arch-v10/drivers/axisflashmap.c linux-2.6.19.2/arch/cris/arch-v10/drivers/axisflashmap.c
+--- linux-2.6.19.2.orig/arch/cris/arch-v10/drivers/axisflashmap.c      2007-05-29 23:30:36.000000000 +0200
++++ linux-2.6.19.2/arch/cris/arch-v10/drivers/axisflashmap.c   2007-05-29 23:36:31.000000000 +0200
+@@ -421,6 +421,11 @@
+       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
+@@ -432,6 +437,32 @@
+                      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){
++                      //printk(KERN_INFO "Found  end of kernel magic at 0x%.08X\n", flash_scan_count);
++                      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);
++              //printk(KERN_INFO "Configuring partition sizes total flash 0x%.08X - kernel 0x%.08X - rootfs 0x%.08X\n", mymtd->size, kernel_part_size, mymtd->size - kernel_part_size);
++              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;
+@@ -527,7 +558,7 @@
+ 
+         if (mymtd) {
+               if (use_default_ptable) {
+-                      printk(KERN_INFO " Using default partition table.\n");
++                      printk(KERN_INFO " Using ACME partition table.\n");
+                       err = add_mtd_partitions(mymtd, axis_default_partitions,
+                                                NUM_DEFAULT_PARTITIONS);
+               } else {
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