package/boot/uboot-lantiq/patches/0020-MIPS-lantiq-add-NAND-SPL-support.patch

   1 From e17398316e82d8b28217232b4fd6030c65138e74 Mon Sep 17 00:00:00 2001
   2 From: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
   3 Date: Mon, 12 Aug 2013 01:18:00 +0200
   4 Subject: MIPS: lantiq: add NAND SPL support
   5
   6 Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
   7
   8 diff --git a/arch/mips/cpu/mips32/lantiq-common/spl.c b/arch/mips/cpu/mips32/lantiq-common/spl.c
   9 index 489a82b..3d9d4d4 100644
  10 --- a/arch/mips/cpu/mips32/lantiq-common/spl.c
  11 +++ b/arch/mips/cpu/mips32/lantiq-common/spl.c
  12 @@ -8,6 +8,7 @@
  13  #include <image.h>
  14  #include <version.h>
  15  #include <spi_flash.h>
  16 +#include <nand.h>
  17  #include <linux/compiler.h>
  18  #include <lzma/LzmaDec.h>
  19  #include <linux/lzo.h>
  20 @@ -63,6 +64,18 @@
  21  #define spl_boot_nor_flash     0
  22  #endif
  23
  24 +#if defined(CONFIG_LTQ_SUPPORT_SPL_NAND_FLASH) && defined(CONFIG_SYS_BOOT_NANDSPL)
  25 +#define spl_boot_nand_flash    1
  26 +#else
  27 +#define spl_boot_nand_flash    0
  28 +#ifndef CONFIG_SYS_NAND_U_BOOT_OFFS
  29 +#define CONFIG_SYS_NAND_U_BOOT_OFFS    0
  30 +#endif
  31 +#ifndef CONFIG_SYS_NAND_PAGE_SIZE
  32 +#define CONFIG_SYS_NAND_PAGE_SIZE      0
  33 +#endif
  34 +#endif
  35 +
  36  #define spl_sync()     __asm__ __volatile__("sync");
  37
  38  struct spl_image {
  39 @@ -337,6 +350,58 @@ static int spl_load_nor_flash(struct spl_image *spl)
  40         return ret;
  41  }
  42
  43 +static int spl_load_nand_flash(struct spl_image *spl)
  44 +{
  45 +       image_header_t *hdr;
  46 +       int ret;
  47 +       unsigned long loadaddr;
  48 +
  49 +       /*
  50 +        * Image format:
  51 +        *
  52 +        * - 12 byte non-volatile bootstrap header
  53 +        * - SPL binary
  54 +        * - 12 byte non-volatile bootstrap header
  55 +        * - padding bytes up to CONFIG_SYS_NAND_U_BOOT_OFFS
  56 +        * - 64 byte U-Boot mkimage header
  57 +        * - U-Boot binary
  58 +        */
  59 +       spl->data_addr = CONFIG_SYS_NAND_U_BOOT_OFFS;
  60 +
  61 +       spl_puts("SPL: initializing NAND flash\n");
  62 +       nand_init();
  63 +
  64 +       spl_debug("SPL: reading image header at page offset %lx\n",
  65 +                 spl->data_addr);
  66 +
  67 +       hdr = (image_header_t *) CONFIG_LOADADDR;
  68 +       ret = nand_spl_load_image(spl->data_addr,
  69 +                                 CONFIG_SYS_NAND_PAGE_SIZE, hdr);
  70 +       if (ret)
  71 +               return ret;
  72 +
  73 +       spl_debug("SPL: checking image header at address %p\n", hdr);
  74 +
  75 +       ret = spl_parse_image(hdr, spl);
  76 +       if (ret)
  77 +               return ret;
  78 +
  79 +       if (spl_is_compressed(spl))
  80 +               loadaddr = CONFIG_LOADADDR;
  81 +       else
  82 +               loadaddr = spl->entry_addr;
  83 +
  84 +       spl_puts("SPL: loading U-Boot to RAM\n");
  85 +
  86 +       ret = nand_spl_load_image(spl->data_addr, spl->data_size,
  87 +                                 (void *) loadaddr);
  88 +
  89 +       if (spl_is_compressed(spl))
  90 +               ret = spl_uncompress(spl, loadaddr);
  91 +
  92 +       return ret;
  93 +}
  94 +
  95  static int spl_load(struct spl_image *spl)
  96  {
  97         int ret;
  98 @@ -345,6 +410,8 @@ static int spl_load(struct spl_image *spl)
  99                 ret = spl_load_spi_flash(spl);
 100         else if (spl_boot_nor_flash)
 101                 ret = spl_load_nor_flash(spl);
 102 +       else if (spl_boot_nand_flash)
 103 +               ret = spl_load_nand_flash(spl);
 104         else
 105                 ret = 1;
 106
 107 diff --git a/arch/mips/include/asm/lantiq/config.h b/arch/mips/include/asm/lantiq/config.h
 108 index feac30d..483cc94 100644
 109 --- a/arch/mips/include/asm/lantiq/config.h
 110 +++ b/arch/mips/include/asm/lantiq/config.h
 111 @@ -40,6 +40,26 @@
 112  #define CONFIG_SPI_SPL_SIMPLE
 113  #endif
 114
 115 +/*
 116 + * NAND flash SPL
 117 + * BOOT CFG 06 only (address cycle based probing, 2KB or 512B page size)
 118 + */
 119 +#if defined(CONFIG_LTQ_SUPPORT_SPL_NAND_FLASH) && defined(CONFIG_SYS_BOOT_NANDSPL)
 120 +#define CONFIG_SPL
 121 +#define CONFIG_SPL_NAND_SUPPORT
 122 +#define CONFIG_SPL_NAND_DRIVERS
 123 +#define CONFIG_SPL_NAND_SIMPLE
 124 +#define CONFIG_SPL_NAND_ECC
 125 +
 126 +/* use software ECC until driver supports HW ECC */
 127 +#define CONFIG_SPL_NAND_SOFTECC
 128 +#define CONFIG_SYS_NAND_ECCSIZE                256
 129 +#define CONFIG_SYS_NAND_ECCBYTES       3
 130 +#define CONFIG_SYS_NAND_ECCPOS         {40, 41, 42, 43, 44, 45, 46, 47, \
 131 +                                       48, 49, 50, 51, 52, 53, 54, 55, \
 132 +                                       56, 57, 58, 59, 60, 61, 62, 63}
 133 +#endif
 134 +
 135  #if defined(CONFIG_LTQ_SUPPORT_SPL_NOR_FLASH) && defined(CONFIG_SYS_BOOT_NORSPL)
 136  #define CONFIG_SPL
 137  #endif
 138 @@ -148,6 +168,21 @@
 139  #define CONFIG_ENV_LOAD_UBOOT_SF
 140  #endif
 141
 142 +#if defined(CONFIG_LTQ_SUPPORT_NAND_FLASH)
 143 +#define CONFIG_ENV_WRITE_UBOOT_NAND                            \
 144 +       "write-uboot-nand="                                     \
 145 +       "nand erase 0 $filesize && "                            \
 146 +       "nand write $fileaddr 0 $filesize\0"
 147 +
 148 +#define CONFIG_ENV_LOAD_UBOOT_NAND                                             \
 149 +       "load-uboot-nandspl=tftpboot u-boot.ltq.nandspl\0"                      \
 150 +       "load-uboot-nandspl-lzo=tftpboot u-boot.ltq.lzo.nandspl\0"              \
 151 +       "load-uboot-nandspl-lzma=tftpboot u-boot.ltq.lzma.nandspl\0"
 152 +#else
 153 +#define CONFIG_ENV_WRITE_UBOOT_NAND
 154 +#define CONFIG_ENV_LOAD_UBOOT_NAND
 155 +#endif
 156 +
 157  #define CONFIG_ENV_LANTIQ_DEFAULTS     \
 158         CONFIG_ENV_CONSOLEDEV           \
 159         CONFIG_ENV_ADDCONSOLE           \
 160 @@ -159,6 +194,8 @@
 161         CONFIG_ENV_LOAD_UBOOT_NOR       \
 162         CONFIG_ENV_SF_PROBE             \
 163         CONFIG_ENV_WRITE_UBOOT_SF       \
 164 -       CONFIG_ENV_LOAD_UBOOT_SF
 165 +       CONFIG_ENV_LOAD_UBOOT_SF        \
 166 +       CONFIG_ENV_WRITE_UBOOT_NAND     \
 167 +       CONFIG_ENV_LOAD_UBOOT_NAND
 168
 169  #endif /* __LANTIQ_CONFIG_H__ */
 170 --
 171 1.8.3.2
 172