target/linux/sibyte/patches/101-rhone_physmap.patch

   1 --- a/arch/mips/sibyte/swarm/platform.c
   2 +++ b/arch/mips/sibyte/swarm/platform.c
   3 @@ -5,6 +5,7 @@
   4  #include <linux/platform_device.h>
   5  #include <linux/ata_platform.h>
   6
   7 +#include <asm/addrspace.h>
   8  #include <asm/sibyte/board.h>
   9  #include <asm/sibyte/sb1250_genbus.h>
  10  #include <asm/sibyte/sb1250_regs.h>
  11 @@ -137,3 +138,71 @@ static int __init sb1250_device_init(voi
  12         return ret;
  13  }
  14  device_initcall(sb1250_device_init);
  15 +
  16 +#ifdef CONFIG_SIBYTE_RHONE
  17 +
  18 +#include <linux/mtd/partitions.h>
  19 +#include <linux/mtd/physmap.h>
  20 +
  21 +/* The board has 16MB flash but CFE sets up only 2MB */
  22 +#define PHYS_TO_K1(a) CKSEG1ADDR(a)
  23 +#define BOOTROM_SIZE 0x100
  24 +
  25 +static void fixup_cs0_size(void)
  26 +{
  27 +       SBWRITECSR(((A_IO_EXT_CS_BASE(0)) + R_IO_EXT_MULT_SIZE), BOOTROM_SIZE);
  28 +}
  29 +
  30 +static struct mtd_partition flash_parts[] = {
  31 +       {
  32 +               .name           = "cfe",
  33 +               .offset         = 0x00000000,
  34 +               .size           = 0x00200000,
  35 +               .mask_flags     = MTD_WRITEABLE,
  36 +       },
  37 +       {
  38 +               .name           = "os",
  39 +               .offset         = 0x00200000,
  40 +               .size           = 0x00d00000,
  41 +       },
  42 +       {
  43 +               .name           = "environment",
  44 +               .offset         = 0x00f00000,
  45 +               .size           = 0x00100000,
  46 +               .mask_flags     = MTD_WRITEABLE,
  47 +       },
  48 +};
  49 +
  50 +static struct physmap_flash_data flash_data = {
  51 +       .width          = 1,
  52 +       .nr_parts       = ARRAY_SIZE(flash_parts),
  53 +       .parts          = flash_parts,
  54 +};
  55 +
  56 +static struct resource flash_resource = {
  57 +       .start          = 0x1fc00000,
  58 +       .end            = 0x20bfffff,
  59 +       .flags          = IORESOURCE_MEM,
  60 +};
  61 +
  62 +static struct platform_device flash_device = {
  63 +       .name           = "physmap-flash",
  64 +       .id             = 0,
  65 +       .resource       = &flash_resource,
  66 +       .num_resources  = 1,
  67 +       .dev            = {
  68 +               .platform_data = &flash_data,
  69 +       },
  70 +};
  71 +
  72 +static int __init flash_setup(void)
  73 +{
  74 +       fixup_cs0_size();
  75 +       platform_device_register(&flash_device);
  76 +
  77 +       return 0;
  78 +};
  79 +
  80 +device_initcall(flash_setup);
  81 +
  82 +#endif /* CONFIG_SIBYTE_RHONE */