target/linux/brcm63xx/patches-3.10/415-MIPS-BCM63XX-store-the-flash-type-in-global-variable.patch

   1 From f888824d352df894ab721a5ca067b0313500efe7 Mon Sep 17 00:00:00 2001
   2 From: Jonas Gorski <jonas.gorski@gmail.com>
   3 Date: Thu, 3 May 2012 12:17:54 +0200
   4 Subject: [PATCH 38/59] MIPS: BCM63XX: store the flash type in global variable
   5
   6 ---
   7  arch/mips/bcm63xx/dev-flash.c                      |   36 +++++++++++++------
   8  .../include/asm/mach-bcm63xx/bcm63xx_dev_flash.h   |    2 +
   9  2 files changed, 26 insertions(+), 12 deletions(-)
  10
  11 --- a/arch/mips/bcm63xx/dev-flash.c
  12 +++ b/arch/mips/bcm63xx/dev-flash.c
  13 @@ -25,6 +25,8 @@
  14  #include <bcm63xx_regs.h>
  15  #include <bcm63xx_io.h>
  16
  17 +int bcm63xx_attached_flash = -1;
  18 +
  19  static struct mtd_partition mtd_partitions[] = {
  20         {
  21                 .name           = "cfe",
  22 @@ -86,21 +88,24 @@ static int __init bcm63xx_detect_flash_t
  23                         bcm63xx_spi_flash_info[0].max_speed_hz = 16666667;
  24
  25                 if (val & STRAPBUS_6328_BOOT_SEL_SERIAL)
  26 -                       return BCM63XX_FLASH_TYPE_SERIAL;
  27 +                       bcm63xx_attached_flash = BCM63XX_FLASH_TYPE_SERIAL;
  28                 else
  29 -                       return BCM63XX_FLASH_TYPE_NAND;
  30 +                       bcm63xx_attached_flash = BCM63XX_FLASH_TYPE_NAND;
  31 +               break;
  32         case BCM6338_CPU_ID:
  33         case BCM6345_CPU_ID:
  34         case BCM6348_CPU_ID:
  35                 /* no way to auto detect so assume parallel */
  36 -               return BCM63XX_FLASH_TYPE_PARALLEL;
  37 +               bcm63xx_attached_flash = BCM63XX_FLASH_TYPE_PARALLEL;
  38 +               break;
  39         case BCM3368_CPU_ID:
  40         case BCM6358_CPU_ID:
  41                 val = bcm_gpio_readl(GPIO_STRAPBUS_REG);
  42                 if (val & STRAPBUS_6358_BOOT_SEL_PARALLEL)
  43 -                       return BCM63XX_FLASH_TYPE_PARALLEL;
  44 +                       bcm63xx_attached_flash = BCM63XX_FLASH_TYPE_PARALLEL;
  45                 else
  46 -                       return BCM63XX_FLASH_TYPE_SERIAL;
  47 +                       bcm63xx_attached_flash = BCM63XX_FLASH_TYPE_SERIAL;
  48 +               break;
  49         case BCM6362_CPU_ID:
  50                 val = bcm_misc_readl(MISC_STRAPBUS_6362_REG);
  51                 if (val & STRAPBUS_6362_HSSPI_CLK_FAST)
  52 @@ -109,9 +114,10 @@ static int __init bcm63xx_detect_flash_t
  53                         bcm63xx_spi_flash_info[0].max_speed_hz = 20000000;
  54
  55                 if (val & STRAPBUS_6362_BOOT_SEL_SERIAL)
  56 -                       return BCM63XX_FLASH_TYPE_SERIAL;
  57 +                       bcm63xx_attached_flash = BCM63XX_FLASH_TYPE_SERIAL;
  58                 else
  59 -                       return BCM63XX_FLASH_TYPE_NAND;
  60 +                       bcm63xx_attached_flash = BCM63XX_FLASH_TYPE_NAND;
  61 +               break;
  62         case BCM6368_CPU_ID:
  63                 val = bcm_gpio_readl(GPIO_STRAPBUS_REG);
  64                 if (val & STRAPBUS_6368_SPI_CLK_FAST)
  65 @@ -119,11 +125,16 @@ static int __init bcm63xx_detect_flash_t
  66
  67                 switch (val & STRAPBUS_6368_BOOT_SEL_MASK) {
  68                 case STRAPBUS_6368_BOOT_SEL_NAND:
  69 -                       return BCM63XX_FLASH_TYPE_NAND;
  70 +                       bcm63xx_attached_flash = BCM63XX_FLASH_TYPE_NAND;
  71 +                       break;
  72                 case STRAPBUS_6368_BOOT_SEL_SERIAL:
  73 -                       return BCM63XX_FLASH_TYPE_SERIAL;
  74 +                       bcm63xx_attached_flash = BCM63XX_FLASH_TYPE_SERIAL;
  75 +                       break;
  76                 case STRAPBUS_6368_BOOT_SEL_PARALLEL:
  77 -                       return BCM63XX_FLASH_TYPE_PARALLEL;
  78 +                       bcm63xx_attached_flash = BCM63XX_FLASH_TYPE_PARALLEL;
  79 +                       break;
  80 +               default:
  81 +                       return -EINVAL;
  82                 }
  83         case BCM63268_CPU_ID:
  84                 val = bcm_misc_readl(MISC_STRAPBUS_63268_REG);
  85 @@ -133,22 +144,24 @@ static int __init bcm63xx_detect_flash_t
  86                         bcm63xx_spi_flash_info[0].max_speed_hz = 20000000;
  87
  88                 if (val & STRAPBUS_63268_BOOT_SEL_SERIAL)
  89 -                       return BCM63XX_FLASH_TYPE_SERIAL;
  90 +                       bcm63xx_attached_flash = BCM63XX_FLASH_TYPE_SERIAL;
  91                 else
  92 -                       return BCM63XX_FLASH_TYPE_NAND;
  93 +                       bcm63xx_attached_flash = BCM63XX_FLASH_TYPE_NAND;
  94         default:
  95                 return -EINVAL;
  96         }
  97 +
  98 +       return 0;
  99  }
 100
 101  int __init bcm63xx_flash_register(void)
 102  {
 103 -       int flash_type;
 104         u32 val;
 105
 106 -       flash_type = bcm63xx_detect_flash_type();
 107
 108 -       switch (flash_type) {
 109 +       bcm63xx_detect_flash_type();
 110 +
 111 +       switch (bcm63xx_attached_flash) {
 112         case BCM63XX_FLASH_TYPE_PARALLEL:
 113                 /* read base address of boot chip select (0) */
 114                 val = bcm_mpi_readl(MPI_CSBASE_REG(0));
 115 @@ -172,7 +185,7 @@ int __init bcm63xx_flash_register(void)
 116                 return -ENODEV;
 117         default:
 118                 pr_err("flash detection failed for BCM%x: %d\n",
 119 -                      bcm63xx_get_cpu_id(), flash_type);
 120 +                      bcm63xx_get_cpu_id(), bcm63xx_attached_flash);
 121                 return -ENODEV;
 122         }
 123  }
 124 --- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_flash.h
 125 +++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_flash.h
 126 @@ -7,6 +7,8 @@ enum {
 127         BCM63XX_FLASH_TYPE_NAND,
 128  };
 129
 130 +extern int bcm63xx_attached_flash;
 131 +
 132  int __init bcm63xx_flash_register(void);
 133
 134  #endif /* __BCM63XX_FLASH_H */