arch/m68k/coldfire/firebee.c

   1 /***************************************************************************/
   2
   3 /*
   4  *      firebee.c -- extra startup code support for the FireBee boards
   5  *
   6  *      Copyright (C) 2011, Greg Ungerer (gerg@snapgear.com)
   7  */
   8
   9 /***************************************************************************/
  10
  11 #include <linux/kernel.h>
  12 #include <linux/init.h>
  13 #include <linux/io.h>
  14 #include <linux/platform_device.h>
  15 #include <linux/mtd/mtd.h>
  16 #include <linux/mtd/partitions.h>
  17 #include <linux/mtd/physmap.h>
  18 #include <asm/coldfire.h>
  19 #include <asm/mcfsim.h>
  20
  21 /***************************************************************************/
  22
  23 /*
  24  *      8MB of NOR flash fitted to the FireBee board.
  25  */
  26 #define FLASH_PHYS_ADDR         0xe0000000      /* Physical address of flash */
  27 #define FLASH_PHYS_SIZE         0x00800000      /* Size of flash */
  28
  29 #define PART_BOOT_START         0x00000000      /* Start at bottom of flash */
  30 #define PART_BOOT_SIZE          0x00040000      /* 256k in size */
  31 #define PART_IMAGE_START        0x00040000      /* Start after boot loader */
  32 #define PART_IMAGE_SIZE         0x006c0000      /* Most of flash */
  33 #define PART_FPGA_START         0x00700000      /* Start at offset 7MB */
  34 #define PART_FPGA_SIZE          0x00100000      /* 1MB in size */
  35
  36 static struct mtd_partition firebee_flash_parts[] = {
  37         {
  38                 .name   = "dBUG",
  39                 .offset = PART_BOOT_START,
  40                 .size   = PART_BOOT_SIZE,
  41         },
  42         {
  43                 .name   = "FPGA",
  44                 .offset = PART_FPGA_START,
  45                 .size   = PART_FPGA_SIZE,
  46         },
  47         {
  48                 .name   = "image",
  49                 .offset = PART_IMAGE_START,
  50                 .size   = PART_IMAGE_SIZE,
  51         },
  52 };
  53
  54 static struct physmap_flash_data firebee_flash_data = {
  55         .width          = 2,
  56         .nr_parts       = ARRAY_SIZE(firebee_flash_parts),
  57         .parts          = firebee_flash_parts,
  58 };
  59
  60 static struct resource firebee_flash_resource = {
  61         .start          = FLASH_PHYS_ADDR,
  62         .end            = FLASH_PHYS_ADDR + FLASH_PHYS_SIZE,
  63         .flags          = IORESOURCE_MEM,
  64 };
  65
  66 static struct platform_device firebee_flash = {
  67         .name           = "physmap-flash",
  68         .id             = 0,
  69         .dev            = {
  70                 .platform_data = &firebee_flash_data,
  71         },
  72         .num_resources  = 1,
  73         .resource       = &firebee_flash_resource,
  74 };
  75
  76 /***************************************************************************/
  77
  78 static int __init init_firebee(void)
  79 {
  80         platform_device_register(&firebee_flash);
  81         return 0;
  82 }
  83
  84 arch_initcall(init_firebee);
  85
  86 /***************************************************************************/