[ar7] handle LOADER_MAGIC2 in ar7part

This is required for Actiontec PK5000 devices. Path from Daniel Gimpelevich.

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@33753 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/target/linux/ar7/patches-3.3/920-ar7part.patch b/target/linux/ar7/patches-3.3/920-ar7part.patch
index 9cbc537..cbd7f26 100644 (file)
--- a/target/linux/ar7/patches-3.3/920-ar7part.patch
+++ b/target/linux/ar7/patches-3.3/920-ar7part.patch
@@ -15,7 +15,7 @@
  
  #ifndef SQUASHFS_MAGIC
  #define SQUASHFS_MAGIC        0x73717368
-@@ -45,6 +48,10 @@ struct ar7_bin_rec {
+@@ -45,12 +48,16 @@ struct ar7_bin_rec {
        unsigned int address;
  };
  
@@ -26,23 +26,85 @@
  static int create_mtd_partitions(struct mtd_info *master,
                                 struct mtd_partition **pparts,
                                 struct mtd_part_parser_data *data)
+ {
+       struct ar7_bin_rec header;
+-      unsigned int offset;
++      unsigned int offset, mtd_start, mtd_end;
+       size_t len;
+       unsigned int pre_size = master->erasesize, post_size = 0;
+       unsigned int root_offset = ROOT_OFFSET;
 @@ -58,6 +65,16 @@ static int create_mtd_partitions(struct
        int retries = 10;
        struct mtd_partition *ar7_parts;
  
-+      const char *prod_id ;
-+      prod_id = prom_getenv("ProductID");
-+      if(prod_id &&
-+              (strcmp(prod_id, "CYWL")==0 ||
-+              strcmp(prod_id, "CYWM")==0 ||
-+              strcmp(prod_id, "CYLM")==0 ||
-+              strcmp(prod_id, "CYLL")==0)){
++      const char *prom_str = prom_getenv("ProductID");
++      char mtd_name[] = "mtd1";
++      if(prom_str &&
++              (strcmp(prom_str, "CYWL")==0 ||
++              strcmp(prom_str, "CYWM")==0 ||
++              strcmp(prom_str, "CYLM")==0 ||
++              strcmp(prom_str, "CYLL")==0)){
 +              return create_titan_partitions(master, pparts, data);
 +      }
 +
        ar7_parts = kzalloc(sizeof(*ar7_parts) * AR7_PARTS, GFP_KERNEL);
        if (!ar7_parts)
                return -ENOMEM;
+@@ -86,34 +103,39 @@ static int create_mtd_partitions(struct
+ 
+       pre_size = offset;
+ 
+-      if (!ar7_parts[1].offset) {
+-              ar7_parts[1].offset = master->size - master->erasesize;
+-              post_size = master->erasesize;
+-      }
+-
+       switch (header.checksum) {
+-      case LOADER_MAGIC1:
+-              while (header.length) {
+-                      offset += sizeof(header) + header.length;
+-                      mtd_read(master, offset, sizeof(header), &len,
+-                               (uint8_t *)&header);
+-              }
+-              root_offset = offset + sizeof(header) + 4;
+-              break;
+       case LOADER_MAGIC2:
++              for (retries = 0; retries <= 9; retries++) {
++                      mtd_name[3] = '0' + retries;
++                      prom_str = prom_getenv(mtd_name);
++                      if (prom_str == NULL)
++                              continue;
++                      sscanf(prom_str, "%i,%i", &mtd_start, &mtd_end);
++                      if (pre_size == (mtd_start & 0x1ffffff)) {
++                              ar7_parts[1].offset = mtd_end &= 0x1ffffff;
++                              ar7_parts[1].size = post_size = master->size - mtd_end;
++                              break;
++                      }
++              }
++      case LOADER_MAGIC1:
++              root_offset = (header.checksum == LOADER_MAGIC1) ? 4 : 0;
+               while (header.length) {
+                       offset += sizeof(header) + header.length;
+                       mtd_read(master, offset, sizeof(header), &len,
+                                (uint8_t *)&header);
+               }
+-              root_offset = offset + sizeof(header) + 4 + 0xff;
+-              root_offset &= ~(uint32_t)0xff;
++              root_offset += offset + sizeof(header);
+               break;
+       default:
+               printk(KERN_WARNING "Unknown magic: %08x\n", header.checksum);
+               break;
+       }
+ 
++      if (!ar7_parts[1].offset) {
++              post_size = master->erasesize;
++              ar7_parts[1].offset = master->size - post_size;
++      }
++
+       mtd_read(master, root_offset, sizeof(header), &len, (u8 *)&header);
+       if (header.checksum != SQUASHFS_MAGIC) {
+               root_offset += master->erasesize - 1;
 --- a/drivers/mtd/titanpart.c
 +++ b/drivers/mtd/titanpart.c
 @@ -149,7 +149,7 @@ static void titan_add_partition(char * e