target/linux/etrax/patches-2.6.28/201-flashsize.patch

   1 Index: linux-2.6.28.2/arch/cris/arch-v10/drivers/axisflashmap.c
   2 ===================================================================
   3 --- linux-2.6.28.2.orig/arch/cris/arch-v10/drivers/axisflashmap.c       2009-02-04 13:49:34.000000000 +0100
   4 +++ linux-2.6.28.2/arch/cris/arch-v10/drivers/axisflashmap.c    2009-02-04 13:55:30.000000000 +0100
   5 @@ -113,7 +113,7 @@
   6
   7  /* If no partition-table was found, we use this default-set. */
   8  #define MAX_PARTITIONS         7
   9 -#define NUM_DEFAULT_PARTITIONS 3
  10 +#define NUM_DEFAULT_PARTITIONS 2
  11
  12  /*
  13   * Default flash size is 2MB. CONFIG_ETRAX_PTABLE_SECTOR is most likely the
  14 @@ -122,19 +122,14 @@
  15   */
  16  static struct mtd_partition axis_default_partitions[NUM_DEFAULT_PARTITIONS] = {
  17         {
  18 -               .name = "boot firmware",
  19 -               .size = CONFIG_ETRAX_PTABLE_SECTOR,
  20 -               .offset = 0
  21 -       },
  22 -       {
  23                 .name = "kernel",
  24 -               .size = 0x200000 - (6 * CONFIG_ETRAX_PTABLE_SECTOR),
  25 -               .offset = CONFIG_ETRAX_PTABLE_SECTOR
  26 +               .size = 0x00,
  27 +               .offset = 0
  28         },
  29         {
  30 -               .name = "filesystem",
  31 -               .size = 5 * CONFIG_ETRAX_PTABLE_SECTOR,
  32 -               .offset = 0x200000 - (5 * CONFIG_ETRAX_PTABLE_SECTOR)
  33 +               .name = "rootfs",
  34 +               .size = 0x200000,
  35 +               .offset = 0x200000
  36         }
  37  };
  38
  39 @@ -281,6 +276,11 @@
  40         struct partitiontable_entry *ptable;
  41         int use_default_ptable = 1; /* Until proven otherwise. */
  42         const char pmsg[] = "  /dev/flash%d at 0x%08x, size 0x%08x\n";
  43 +       unsigned int kernel_part_size = 0;
  44 +       unsigned char *flash_mem = (unsigned char*)(FLASH_CACHED_ADDR);
  45 +       unsigned int flash_scan_count = 0;
  46 +       const char *part_magic = "ACME_PART_MAGIC";
  47 +       unsigned int magic_len = strlen(part_magic);
  48
  49         if (!(mymtd = flash_probe())) {
  50                 /* There's no reason to use this module if no flash chip can
  51 @@ -293,6 +293,31 @@
  52                 axisflash_mtd = mymtd;
  53         }
  54
  55 +       /* scan flash to findout where out partition starts */
  56 +
  57 +       printk(KERN_INFO "Scanning flash for end of kernel magic\n");
  58 +       for(flash_scan_count = 0; flash_scan_count < 100000; flash_scan_count++) {
  59 +               if(strncmp(&flash_mem[flash_scan_count], part_magic, magic_len - 1) == 0) {
  60 +                       kernel_part_size = flash_mem[flash_scan_count + magic_len ];
  61 +                       kernel_part_size <<= 8;
  62 +                       kernel_part_size += flash_mem[flash_scan_count + magic_len + 2];
  63 +                       kernel_part_size <<= 8;
  64 +                       kernel_part_size += flash_mem[flash_scan_count + magic_len + 1];
  65 +                       kernel_part_size <<= 8;
  66 +                       kernel_part_size += flash_mem[flash_scan_count + magic_len + 3];
  67 +                       printk(KERN_INFO "Kernel ends at 0x%.08X\n", kernel_part_size);
  68 +                       flash_scan_count = 1100000;
  69 +               }
  70 +       }
  71 +
  72 +
  73 +       if(kernel_part_size){
  74 +               kernel_part_size = (kernel_part_size & 0xffff0000);
  75 +               axis_default_partitions[0].size = kernel_part_size;
  76 +               axis_default_partitions[1].size =  mymtd->size - axis_default_partitions[0].size;
  77 +               axis_default_partitions[1].offset = axis_default_partitions[0].size;
  78 +       }
  79 +
  80         if (mymtd) {
  81                 mymtd->owner = THIS_MODULE;
  82                 ptable_head = (struct partitiontable_head *)(FLASH_CACHED_ADDR +
  83 Index: linux-2.6.28.2/arch/cris/arch-v10/lib/hw_settings.S
  84 ===================================================================
  85 --- linux-2.6.28.2.orig/arch/cris/arch-v10/lib/hw_settings.S    2009-02-04 13:48:25.000000000 +0100
  86 +++ linux-2.6.28.2/arch/cris/arch-v10/lib/hw_settings.S 2009-02-04 13:49:04.000000000 +0100
  87 @@ -60,3 +60,5 @@
  88         .dword R_PORT_PB_SET
  89         .dword PB_SET_VALUE
  90         .dword 0 ; No more register values
  91 +       .ascii "ACME_PART_MAGIC"
  92 +       .dword 0xdeadc0de