target/linux/lantiq/patches/206-owrt-brnboot.patch

   1 Index: linux-3.1.10/drivers/mtd/mtdpart.c
   2 ===================================================================
   3 --- linux-3.1.10.orig/drivers/mtd/mtdpart.c     2012-02-14 19:38:40.102266817 +0100
   4 +++ linux-3.1.10/drivers/mtd/mtdpart.c  2012-02-14 19:38:40.146266819 +0100
   5 @@ -899,6 +899,38 @@
   6         return le32_to_cpu(temp) == SQUASHFS_MAGIC;
   7  }
   8
   9 +static unsigned long find_brnimage_size(struct mtd_info *mtd,
  10 +                                     unsigned long offset)
  11 +{
  12 +       unsigned long buf[4];
  13 +       // Assume at most 2MB of kernel image
  14 +       unsigned long end = offset + (2 << 20);
  15 +       unsigned long ptr = offset + 0x400 - 12;
  16 +       size_t len;
  17 +       int ret;
  18 +
  19 +       while (ptr < end) {
  20 +               long size_min = ptr - 0x400 - 12 - offset;
  21 +               long size_max = ptr + 12 - offset;
  22 +               ret = mtd->read(mtd, ptr, 16, &len, (void *)buf);
  23 +               if (ret || len != 16)
  24 +                       return 0;
  25 +
  26 +               if (le32_to_cpu(buf[0]) < size_min ||
  27 +                   le32_to_cpu(buf[0]) > size_max) {
  28 +                       ptr += 0x400;
  29 +                       continue;
  30 +               }
  31 +
  32 +               if (le32_to_cpu(buf[3]) == SQUASHFS_MAGIC)
  33 +                       return ptr + 12 - offset;
  34 +
  35 +               ptr += 0x400;
  36 +       }
  37 +
  38 +       return 0;
  39 +}
  40 +
  41  static int split_uimage(struct mtd_info *mtd,
  42                         const struct mtd_partition *part)
  43  {
  44 @@ -916,8 +948,11 @@
  45
  46         split_partitions[0].size = find_uimage_size(mtd, part->offset);
  47         if (!split_partitions[0].size) {
  48 -               printk(KERN_NOTICE "no uImage found in linux partition\n");
  49 -               return -1;
  50 +               split_partitions[0].size = find_brnimage_size(mtd, part->offset);
  51 +               if (!split_partitions[0].size) {
  52 +                       printk(KERN_NOTICE "no uImage or brnImage found in linux partition\n");
  53 +                       return -1;
  54 +               }
  55         }
  56
  57         if (!detect_squashfs_partition(mtd,
  58 Index: linux-3.1.10/arch/mips/include/asm/mach-lantiq/xway/lantiq_soc.h
  59 ===================================================================
  60 --- linux-3.1.10.orig/arch/mips/include/asm/mach-lantiq/xway/lantiq_soc.h       2012-02-14 19:38:40.058266816 +0100
  61 +++ linux-3.1.10/arch/mips/include/asm/mach-lantiq/xway/lantiq_soc.h    2012-02-14 19:57:07.790314179 +0100
  62 @@ -149,6 +149,7 @@
  63
  64  extern __iomem void *ltq_ebu_membase;
  65  extern __iomem void *ltq_cgu_membase;
  66 +extern unsigned long ltq_brn_boot;
  67
  68  /* request a non-gpio and set the PIO config */
  69  extern int  ltq_gpio_request(unsigned int pin, unsigned int alt0,
  70 Index: linux-3.1.10/arch/mips/lantiq/setup.c
  71 ===================================================================
  72 --- linux-3.1.10.orig/arch/mips/lantiq/setup.c  2012-02-14 19:38:40.010266814 +0100
  73 +++ linux-3.1.10/arch/mips/lantiq/setup.c       2012-02-14 19:38:40.150266820 +0100
  74 @@ -20,6 +20,8 @@
  75
  76  /* assume 16M as default incase uboot fails to pass proper ramsize */
  77  unsigned long physical_memsize = 16L;
  78 +/* set to 1 if the bootloader is BRN-BOOT instead of u-boot */
  79 +unsigned long ltq_brn_boot = 0;
  80
  81  void __init plat_mem_setup(void)
  82  {
  83 @@ -39,6 +41,10 @@
  84                         if (strict_strtoul(e, 0, &physical_memsize))
  85                                 pr_warn("bad memsize specified\n");
  86                 }
  87 +               if (!strncmp(e, "BRN-BOOT", 8)){
  88 +                       pr_info("Found BRN-BOOT instead of u-boot\n");
  89 +                       ltq_brn_boot = 1;
  90 +               }
  91                 envp++;
  92         }
  93         physical_memsize *= 1024 * 1024;