target/linux/ar7/patches-3.18/920-ar7part.patch

   1 --- a/drivers/mtd/ar7part.c
   2 +++ b/drivers/mtd/ar7part.c
   3 @@ -30,11 +30,14 @@
   4
   5  #include <uapi/linux/magic.h>
   6
   7 +#include <asm/mach-ar7/prom.h>
   8 +
   9  #define AR7_PARTS      4
  10  #define ROOT_OFFSET    0xe0000
  11
  12  #define LOADER_MAGIC1  le32_to_cpu(0xfeedfa42)
  13  #define LOADER_MAGIC2  le32_to_cpu(0xfeed1281)
  14 +#define LOADER_MAGIC3  le32_to_cpu(0x434d4d4c)
  15
  16  struct ar7_bin_rec {
  17         unsigned int checksum;
  18 @@ -42,12 +45,16 @@ struct ar7_bin_rec {
  19         unsigned int address;
  20  };
  21
  22 +int create_titan_partitions(struct mtd_info *master,
  23 +        struct mtd_partition **pparts,
  24 +        struct mtd_part_parser_data *data);
  25 +
  26  static int create_mtd_partitions(struct mtd_info *master,
  27                                  struct mtd_partition **pparts,
  28                                  struct mtd_part_parser_data *data)
  29  {
  30         struct ar7_bin_rec header;
  31 -       unsigned int offset;
  32 +       unsigned int offset, mtd_start, mtd_end;
  33         size_t len;
  34         unsigned int pre_size = master->erasesize, post_size = 0;
  35         unsigned int root_offset = ROOT_OFFSET;
  36 @@ -55,6 +62,16 @@ static int create_mtd_partitions(struct
  37         int retries = 10;
  38         struct mtd_partition *ar7_parts;
  39
  40 +       const char *prom_str = prom_getenv("ProductID");
  41 +       char mtd_name[] = "mtd1";
  42 +       if(prom_str &&
  43 +               (strcmp(prom_str, "CYWL")==0 ||
  44 +               strcmp(prom_str, "CYWM")==0 ||
  45 +               strcmp(prom_str, "CYLM")==0 ||
  46 +               strcmp(prom_str, "CYLL")==0)){
  47 +               return create_titan_partitions(master, pparts, data);
  48 +       }
  49 +
  50         ar7_parts = kzalloc(sizeof(*ar7_parts) * AR7_PARTS, GFP_KERNEL);
  51         if (!ar7_parts)
  52                 return -ENOMEM;
  53 @@ -83,34 +100,39 @@ static int create_mtd_partitions(struct
  54
  55         pre_size = offset;
  56
  57 -       if (!ar7_parts[1].offset) {
  58 -               ar7_parts[1].offset = master->size - master->erasesize;
  59 -               post_size = master->erasesize;
  60 -       }
  61 -
  62         switch (header.checksum) {
  63 -       case LOADER_MAGIC1:
  64 -               while (header.length) {
  65 -                       offset += sizeof(header) + header.length;
  66 -                       mtd_read(master, offset, sizeof(header), &len,
  67 -                                (uint8_t *)&header);
  68 -               }
  69 -               root_offset = offset + sizeof(header) + 4;
  70 -               break;
  71         case LOADER_MAGIC2:
  72 +               for (retries = 0; retries <= 9; retries++) {
  73 +                       mtd_name[3] = '0' + retries;
  74 +                       prom_str = prom_getenv(mtd_name);
  75 +                       if (prom_str == NULL)
  76 +                               continue;
  77 +                       sscanf(prom_str, "%i,%i", &mtd_start, &mtd_end);
  78 +                       if (pre_size == (mtd_start & 0x1ffffff)) {
  79 +                               ar7_parts[1].offset = mtd_end &= 0x1ffffff;
  80 +                               ar7_parts[1].size = post_size = master->size - mtd_end;
  81 +                               break;
  82 +                       }
  83 +               }
  84 +       case LOADER_MAGIC1:
  85 +               root_offset = (header.checksum == LOADER_MAGIC1) ? 4 : 0;
  86                 while (header.length) {
  87                         offset += sizeof(header) + header.length;
  88                         mtd_read(master, offset, sizeof(header), &len,
  89                                  (uint8_t *)&header);
  90                 }
  91 -               root_offset = offset + sizeof(header) + 4 + 0xff;
  92 -               root_offset &= ~(uint32_t)0xff;
  93 +               root_offset += offset + sizeof(header);
  94                 break;
  95         default:
  96                 printk(KERN_WARNING "Unknown magic: %08x\n", header.checksum);
  97                 break;
  98         }
  99
 100 +       if (!ar7_parts[1].offset) {
 101 +               post_size = master->erasesize;
 102 +               ar7_parts[1].offset = master->size - post_size;
 103 +       }
 104 +
 105         mtd_read(master, root_offset, sizeof(header), &len, (u8 *)&header);
 106         if (header.checksum != SQUASHFS_MAGIC) {
 107                 root_offset += master->erasesize - 1;
 108 --- a/drivers/mtd/titanpart.c
 109 +++ b/drivers/mtd/titanpart.c
 110 @@ -149,7 +149,7 @@ static void titan_add_partition(char * e
 111  }
 112  int create_titan_partitions(struct mtd_info *master,
 113         struct mtd_partition **pparts,
 114 -       unsigned long origin)
 115 +       struct mtd_part_parser_data *data)
 116  {
 117         struct nsp_img_hdr_head         hdr;
 118         struct nsp_img_hdr_section_info sect_info;