target/linux/etrax/patches-2.6.29/201-flashsize.patch

   1 --- a/arch/cris/arch-v10/drivers/axisflashmap.c
   2 +++ b/arch/cris/arch-v10/drivers/axisflashmap.c
   3 @@ -113,7 +113,7 @@ static struct map_info map_cse1 = {
   4
   5  /* If no partition-table was found, we use this default-set. */
   6  #define MAX_PARTITIONS         7
   7 -#define NUM_DEFAULT_PARTITIONS 3
   8 +#define NUM_DEFAULT_PARTITIONS 2
   9
  10  /*
  11   * Default flash size is 2MB. CONFIG_ETRAX_PTABLE_SECTOR is most likely the
  12 @@ -122,19 +122,14 @@ static struct map_info map_cse1 = {
  13   */
  14  static struct mtd_partition axis_default_partitions[NUM_DEFAULT_PARTITIONS] = {
  15         {
  16 -               .name = "boot firmware",
  17 -               .size = CONFIG_ETRAX_PTABLE_SECTOR,
  18 -               .offset = 0
  19 -       },
  20 -       {
  21                 .name = "kernel",
  22 -               .size = 0x200000 - (6 * CONFIG_ETRAX_PTABLE_SECTOR),
  23 -               .offset = CONFIG_ETRAX_PTABLE_SECTOR
  24 +               .size = 0x00,
  25 +               .offset = 0
  26         },
  27         {
  28 -               .name = "filesystem",
  29 -               .size = 5 * CONFIG_ETRAX_PTABLE_SECTOR,
  30 -               .offset = 0x200000 - (5 * CONFIG_ETRAX_PTABLE_SECTOR)
  31 +               .name = "rootfs",
  32 +               .size = 0x200000,
  33 +               .offset = 0x200000
  34         }
  35  };
  36
  37 @@ -281,6 +276,11 @@ static int __init init_axis_flash(void)
  38         struct partitiontable_entry *ptable;
  39         int use_default_ptable = 1; /* Until proven otherwise. */
  40         const char pmsg[] = "  /dev/flash%d at 0x%08x, size 0x%08x\n";
  41 +       unsigned int kernel_part_size = 0;
  42 +       unsigned char *flash_mem = (unsigned char*)(FLASH_CACHED_ADDR);
  43 +       unsigned int flash_scan_count = 0;
  44 +       const char *part_magic = "ACME_PART_MAGIC";
  45 +       unsigned int magic_len = strlen(part_magic);
  46
  47         if (!(mymtd = flash_probe())) {
  48                 /* There's no reason to use this module if no flash chip can
  49 @@ -293,6 +293,31 @@ static int __init init_axis_flash(void)
  50                 axisflash_mtd = mymtd;
  51         }
  52
  53 +       /* scan flash to findout where out partition starts */
  54 +
  55 +       printk(KERN_INFO "Scanning flash for end of kernel magic\n");
  56 +       for(flash_scan_count = 0; flash_scan_count < 100000; flash_scan_count++) {
  57 +               if(strncmp(&flash_mem[flash_scan_count], part_magic, magic_len - 1) == 0) {
  58 +                       kernel_part_size = flash_mem[flash_scan_count + magic_len ];
  59 +                       kernel_part_size <<= 8;
  60 +                       kernel_part_size += flash_mem[flash_scan_count + magic_len + 2];
  61 +                       kernel_part_size <<= 8;
  62 +                       kernel_part_size += flash_mem[flash_scan_count + magic_len + 1];
  63 +                       kernel_part_size <<= 8;
  64 +                       kernel_part_size += flash_mem[flash_scan_count + magic_len + 3];
  65 +                       printk(KERN_INFO "Kernel ends at 0x%.08X\n", kernel_part_size);
  66 +                       flash_scan_count = 1100000;
  67 +               }
  68 +       }
  69 +
  70 +
  71 +       if(kernel_part_size){
  72 +               kernel_part_size = (kernel_part_size & 0xffff0000);
  73 +               axis_default_partitions[0].size = kernel_part_size;
  74 +               axis_default_partitions[1].size =  mymtd->size - axis_default_partitions[0].size;
  75 +               axis_default_partitions[1].offset = axis_default_partitions[0].size;
  76 +       }
  77 +
  78         if (mymtd) {
  79                 mymtd->owner = THIS_MODULE;
  80                 ptable_head = (struct partitiontable_head *)(FLASH_CACHED_ADDR +
  81 --- a/arch/cris/arch-v10/lib/hw_settings.S
  82 +++ b/arch/cris/arch-v10/lib/hw_settings.S
  83 @@ -60,3 +60,5 @@
  84         .dword R_PORT_PB_SET
  85         .dword PB_SET_VALUE
  86         .dword 0 ; No more register values
  87 +       .ascii "ACME_PART_MAGIC"
  88 +       .dword 0xdeadc0de