brcm47xx: fix partition layout on SimpleShare devices.
authorHauke Mehrtens <hauke@hauke-m.de>
Wed, 25 May 2011 17:46:34 +0000 (17:46 +0000)
committerHauke Mehrtens <hauke@hauke-m.de>
Wed, 25 May 2011 17:46:34 +0000 (17:46 +0000)
The flash driver code should be cleaned up and the broad detection code should be placed into arch code and used here.

This fixes #9323

Thank you Will Holmes for the patch.

SVN-Revision: 27005

target/linux/brcm47xx/files/drivers/mtd/maps/bcm47xx-flash.c

index a9bdc96..fef0df8 100644 (file)
@@ -90,6 +90,7 @@ struct trx_header {
 #define ROUTER_NETGEAR_WNR834B         2
 #define ROUTER_NETGEAR_WNDR3300        3
 #define ROUTER_NETGEAR_WNR3500L        4
+#define ROUTER_SIMPLETECH_SIMPLESHARE  5
 
 #ifdef CONFIG_SSB
 extern struct ssb_bus ssb_bcm47xx;
@@ -126,6 +127,7 @@ static struct mtd_partition bcm47xx_parts[] = {
        { name: "linux", offset: 0, size: 0, },
        { name: "rootfs", offset: 0, size: 0, },
        { name: "nvram", offset: 0, size: 0, },
+       { name: NULL, }, /* Used to create custom partitons with the function get_router() */
        { name: NULL, },
 };
 
@@ -340,7 +342,7 @@ find_root(struct mtd_info *mtd, size_t size, struct mtd_partition *part)
        return -1;
 
  found:
-       printk(KERN_NOTICE"TRX offset : %lx\n", trxoff);
+       printk(KERN_NOTICE"TRX offset : %x\n", trxoff);
        if (part->size == 0)
                return 0;
        
@@ -397,6 +399,7 @@ static int get_router(void)
        u32 boardflags = 0;
        u16 sdram_init = 0;
        u16 cardbus = 0;
+       u16 strev = 0;
 
        if (nvram_getenv("boardnum", buf, sizeof(buf)) >= 0)
                boardnum = simple_strtoul(buf, NULL, 0);
@@ -410,6 +413,8 @@ static int get_router(void)
                sdram_init = simple_strtoul(buf, NULL, 0);
        if (nvram_getenv("cardbus", buf, sizeof(buf)) >= 0)
                cardbus = simple_strtoul(buf, NULL, 0);
+       if (nvram_getenv("st_rev", buf, sizeof(buf)) >= 0)
+               strev = simple_strtoul(buf, NULL, 0);
 
        if ((boardnum == 8 || boardnum == 01)
          && boardtype == 0x0472 && cardbus == 1) {
@@ -438,6 +443,14 @@ static int get_router(void)
                return ROUTER_NETGEAR_WNR3500L;
        }
 
+       if (boardtype == 0x042f
+         && boardrev == 0x10
+         && boardflags == 0 
+         && strev == 0x11) { 
+               /* Simpletech Simpleshare */
+               return ROUTER_SIMPLETECH_SIMPLESHARE;
+       }
+
        return 0;
 }
 
@@ -450,19 +463,7 @@ init_mtd_partitions(struct mtd_info *mtd, size_t size)
         * part from our mapping to prevent overwriting len/checksum on e.g.
         * Netgear WGR614v8/L/WW
         */
-       int board_data_size = 0;
-
-       switch (get_router()) {
-       case ROUTER_NETGEAR_WGR614L:
-       case ROUTER_NETGEAR_WNR834B:
-       case ROUTER_NETGEAR_WNDR3300:
-       case ROUTER_NETGEAR_WNR3500L:
-               /* Netgear: checksum is @ 0x003AFFF8 for 4M flash or checksum
-                * is @ 0x007AFFF8 for 8M flash
-                */
-               board_data_size = 4 * mtd->erasesize;
-               break;
-       }
+       int custom_data_size = 0;
 
        if ((cfe_size = find_cfe_size(mtd,size)) < 0)
                return NULL;
@@ -473,8 +474,46 @@ init_mtd_partitions(struct mtd_info *mtd, size_t size)
 
        /* nvram */
        if (cfe_size != 384 * 1024) {
-               bcm47xx_parts[3].offset = size - ROUNDUP(NVRAM_SPACE, mtd->erasesize);
-               bcm47xx_parts[3].size   = ROUNDUP(NVRAM_SPACE, mtd->erasesize);
+
+               switch (get_router()) {
+               case ROUTER_NETGEAR_WGR614L:
+               case ROUTER_NETGEAR_WNR834B:
+               case ROUTER_NETGEAR_WNDR3300:
+               case ROUTER_NETGEAR_WNR3500L:
+                       /* Netgear: checksum is @ 0x003AFFF8 for 4M flash or checksum
+                        * is @ 0x007AFFF8 for 8M flash
+                        */
+                       custom_data_size = mtd->erasesize;
+
+                       bcm47xx_parts[3].offset = size - ROUNDUP(NVRAM_SPACE, mtd->erasesize);
+                       bcm47xx_parts[3].size   = ROUNDUP(NVRAM_SPACE, mtd->erasesize);
+
+                       /* Place CFE board_data into a partition */
+                       bcm47xx_parts[4].name = "board_data";
+                       bcm47xx_parts[4].offset = bcm47xx_parts[3].offset - custom_data_size;
+                       bcm47xx_parts[4].size   =  custom_data_size;
+                       break;
+
+               case ROUTER_SIMPLETECH_SIMPLESHARE:
+                       /* Fixup Simpletech Simple share nvram  */
+
+                       printk("Setting up simpletech nvram\n");
+                       custom_data_size = mtd->erasesize;
+
+                       bcm47xx_parts[3].offset = size - ROUNDUP(NVRAM_SPACE, mtd->erasesize) * 2;
+                       bcm47xx_parts[3].size   = ROUNDUP(NVRAM_SPACE, mtd->erasesize);
+
+                       /* Place backup nvram into a partition */
+                       bcm47xx_parts[4].name = "nvram_copy";
+                       bcm47xx_parts[4].offset = size - ROUNDUP(NVRAM_SPACE, mtd->erasesize);
+                       bcm47xx_parts[4].size   = ROUNDUP(NVRAM_SPACE, mtd->erasesize);
+                       break;
+
+               default:
+                       bcm47xx_parts[3].offset = size - ROUNDUP(NVRAM_SPACE, mtd->erasesize);
+                       bcm47xx_parts[3].size   = ROUNDUP(NVRAM_SPACE, mtd->erasesize);
+               }
+
        } else {
                /* nvram (old 128kb config partition on netgear wgt634u) */
                bcm47xx_parts[3].offset = bcm47xx_parts[0].size;
@@ -486,9 +525,15 @@ init_mtd_partitions(struct mtd_info *mtd, size_t size)
        dual_image_offset=find_dual_image_off(mtd,size);
        /* linux (kernel and rootfs) */
        if (cfe_size != 384 * 1024) {
-               bcm47xx_parts[1].offset = bcm47xx_parts[0].size;
-               bcm47xx_parts[1].size   = bcm47xx_parts[3].offset - dual_image_offset -
-                       bcm47xx_parts[1].offset - board_data_size;
+               if (get_router() == ROUTER_SIMPLETECH_SIMPLESHARE) {
+                       bcm47xx_parts[1].offset = bcm47xx_parts[0].size;
+                       bcm47xx_parts[1].size   = bcm47xx_parts[4].offset - dual_image_offset -
+                               bcm47xx_parts[1].offset - custom_data_size;
+               } else {
+                       bcm47xx_parts[1].offset = bcm47xx_parts[0].size;
+                       bcm47xx_parts[1].size   = bcm47xx_parts[3].offset - dual_image_offset -
+                               bcm47xx_parts[1].offset - custom_data_size;
+               }
        } else {
                /* do not count the elf loader, which is on one block */
                bcm47xx_parts[1].offset = bcm47xx_parts[0].size + 
@@ -496,14 +541,14 @@ init_mtd_partitions(struct mtd_info *mtd, size_t size)
                bcm47xx_parts[1].size   = size - 
                        bcm47xx_parts[0].size - 
                        (2*bcm47xx_parts[3].size) - 
-                       mtd->erasesize - board_data_size;
+                       mtd->erasesize - custom_data_size;
        }
 
        /* find and size rootfs */
        find_root(mtd,size,&bcm47xx_parts[2]);
        bcm47xx_parts[2].size = size - dual_image_offset -
                                bcm47xx_parts[2].offset -
-                               bcm47xx_parts[3].size - board_data_size;
+                               bcm47xx_parts[3].size - custom_data_size;
 
        return bcm47xx_parts;
 }