target/linux/brcm63xx/patches-2.6.27/040-bcm963xx_flashmap.patch

   1 From e734ace5baa04e0e8af1d4483475fbd6bd2b32a1 Mon Sep 17 00:00:00 2001
   2 From: Axel Gembe <ago@bastart.eu.org>
   3 Date: Mon, 12 May 2008 18:54:09 +0200
   4 Subject: [PATCH] bcm963xx: flashmap support
   5
   6
   7 Signed-off-by: Axel Gembe <ago@bastart.eu.org>
   8 ---
   9  drivers/mtd/maps/Kconfig  |    7 +++++++
  10  drivers/mtd/maps/Makefile |    1 +
  11  drivers/mtd/redboot.c     |   13 ++++++++++---
  12  3 files changed, 18 insertions(+), 3 deletions(-)
  13
  14 --- a/drivers/mtd/maps/Kconfig
  15 +++ b/drivers/mtd/maps/Kconfig
  16 @@ -257,6 +257,13 @@ config MTD_ALCHEMY
  17         help
  18           Flash memory access on AMD Alchemy Pb/Db/RDK Reference Boards
  19
  20 +config MTD_BCM963XX
  21 +        tristate "BCM963xx Flash device"
  22 +        depends on MIPS && BCM63XX
  23 +        help
  24 +         Flash memory access on BCM963xx boards. Currently only works with
  25 +         RedBoot and CFE.
  26 +
  27  config MTD_DILNETPC
  28         tristate "CFI Flash device mapped on DIL/Net PC"
  29         depends on X86 && MTD_CONCAT && MTD_PARTITIONS && MTD_CFI_INTELEXT
  30 --- a/drivers/mtd/redboot.c
  31 +++ b/drivers/mtd/redboot.c
  32 @@ -39,7 +39,7 @@ static inline int redboot_checksum(struc
  33         return 1;
  34  }
  35
  36 -static int parse_redboot_partitions(struct mtd_info *master,
  37 +int parse_redboot_partitions(struct mtd_info *master,
  38                               struct mtd_partition **pparts,
  39                               unsigned long fis_origin)
  40  {
  41 @@ -162,6 +162,14 @@ static int parse_redboot_partitions(stru
  42                 goto out;
  43         }
  44
  45 +       if (!fis_origin) {
  46 +               for (i = 0; i < numslots; i++) {
  47 +                       if (!strncmp(buf[i].name, "RedBoot", 8)) {
  48 +                               fis_origin = (buf[i].flash_base & (master->size << 1) - 1);
  49 +                       }
  50 +               }
  51 +       }
  52 +
  53         for (i = 0; i < numslots; i++) {
  54                 struct fis_list *new_fl, **prev;
  55
  56 @@ -184,9 +192,8 @@ static int parse_redboot_partitions(stru
  57                 new_fl->img = &buf[i];
  58                  if (fis_origin) {
  59                          buf[i].flash_base -= fis_origin;
  60 -                } else {
  61 -                        buf[i].flash_base &= master->size-1;
  62                  }
  63 +               buf[i].flash_base &= (master->size << 1) - 1;
  64
  65                 /* I'm sure the JFFS2 code has done me permanent damage.
  66                  * I now think the following is _normal_
  67 --- a/drivers/mtd/maps/Makefile
  68 +++ b/drivers/mtd/maps/Makefile
  69 @@ -65,3 +65,4 @@ obj-$(CONFIG_MTD_PLATRAM)     += plat-ram.o
  70  obj-$(CONFIG_MTD_OMAP_NOR)     += omap_nor.o
  71  obj-$(CONFIG_MTD_INTEL_VR_NOR) += intel_vr_nor.o
  72  obj-$(CONFIG_MTD_BFIN_ASYNC)   += bfin-async-flash.o
  73 +obj-$(CONFIG_MTD_BCM963XX)     += bcm963xx-flash.o