target/linux/pxa/patches-2.6.21/007-flash.patch

   1 --- /dev/null
   2 +++ b/drivers/mtd/maps/gumstix-flash.c
   3 @@ -0,0 +1,136 @@
   4 +/*
   5 + * Map driver for the Gumstix platform
   6 + *
   7 + * Author:     Craig Hughes
   8 + *
   9 + * This program is free software; you can redistribute it and/or modify
  10 + * it under the terms of the GNU General Public License version 2 as
  11 + * published by the Free Software Foundation.
  12 + */
  13 +
  14 +#include <linux/module.h>
  15 +#include <linux/types.h>
  16 +#include <linux/kernel.h>
  17 +#include <linux/init.h>
  18 +#include <linux/mtd/mtd.h>
  19 +#include <linux/mtd/map.h>
  20 +#include <linux/mtd/partitions.h>
  21 +#include <asm/io.h>
  22 +#include <asm/hardware.h>
  23 +#include <asm/arch/gumstix.h>
  24 +
  25 +
  26 +#define ROM_ADDR       0x00000000
  27 +#define FLASH_ADDR     0x00000000
  28 +
  29 +#define WINDOW_SIZE    64*1024*1024
  30 +
  31 +static struct map_info gumstix_flash_maps[1] = { {
  32 +       .name =         "Gumstix Flash ROM",
  33 +       .size =         WINDOW_SIZE,
  34 +       .phys =         FLASH_ADDR,
  35 +       .bankwidth =    2,
  36 +} };
  37 +
  38 +static struct mtd_partition gumstix_flash_partitions[] = {
  39 +       {
  40 +               .name =         "Bootloader",
  41 +               .size =         0x00040000,
  42 +               .offset =       FLASH_ADDR
  43 +       },{
  44 +               .name =         "RootFS",
  45 +               .size =         MTDPART_SIZ_FULL,
  46 +               .offset =       MTDPART_OFS_APPEND
  47 +       }
  48 +};
  49 +
  50 +static struct mtd_info *mymtds[1];
  51 +static struct mtd_partition *parsed_parts[1];
  52 +static int nr_parsed_parts[1];
  53 +
  54 +static const char *probes[] = { NULL };
  55 +
  56 +static int __init gumstix_flashmap_init(void)
  57 +{
  58 +       int ret = 0, i;
  59 +
  60 +       for (i = 0; i < 1; i++) {
  61 +               gumstix_flash_maps[i].virt = ioremap(gumstix_flash_maps[i].phys, WINDOW_SIZE);
  62 +               if (!gumstix_flash_maps[i].virt) {
  63 +                       printk(KERN_WARNING "Failed to ioremap %s\n", gumstix_flash_maps[i].name);
  64 +                       if (!ret)
  65 +                               ret = -ENOMEM;
  66 +                       continue;
  67 +               }
  68 +               simple_map_init(&gumstix_flash_maps[i]);
  69 +
  70 +               printk(KERN_NOTICE "Probing %s at physical address 0x%08lx (%d-bit bankwidth)\n",
  71 +                      gumstix_flash_maps[i].name, gumstix_flash_maps[i].phys,
  72 +                      gumstix_flash_maps[i].bankwidth * 8);
  73 +
  74 +               mymtds[i] = do_map_probe("cfi_probe", &gumstix_flash_maps[i]);
  75 +
  76 +               if (!mymtds[i]) {
  77 +                       iounmap((void *)gumstix_flash_maps[i].virt);
  78 +                       if (gumstix_flash_maps[i].cached)
  79 +                               iounmap(gumstix_flash_maps[i].cached);
  80 +                       if (!ret)
  81 +                               ret = -EIO;
  82 +                       continue;
  83 +               }
  84 +               mymtds[i]->owner = THIS_MODULE;
  85 +
  86 +               ret = parse_mtd_partitions(mymtds[i], probes,
  87 +                                          &parsed_parts[i], 0);
  88 +
  89 +               if (ret > 0)
  90 +                       nr_parsed_parts[i] = ret;
  91 +       }
  92 +
  93 +       if (!mymtds[0])
  94 +               return ret;
  95 +
  96 +       for (i = 0; i < 1; i++) {
  97 +               if (!mymtds[i]) {
  98 +                       printk(KERN_WARNING "%s is absent. Skipping\n", gumstix_flash_maps[i].name);
  99 +               } else if (nr_parsed_parts[i]) {
 100 +                       add_mtd_partitions(mymtds[i], parsed_parts[i], nr_parsed_parts[i]);
 101 +               } else if (!i) {
 102 +                       printk("Using static partitions on %s\n", gumstix_flash_maps[i].name);
 103 +                       add_mtd_partitions(mymtds[i], gumstix_flash_partitions, ARRAY_SIZE(gumstix_flash_partitions));
 104 +               } else {
 105 +                       printk("Registering %s as whole device\n", gumstix_flash_maps[i].name);
 106 +                       add_mtd_device(mymtds[i]);
 107 +               }
 108 +       }
 109 +       return 0;
 110 +}
 111 +
 112 +static void __exit gumstix_flashmap_cleanup(void)
 113 +{
 114 +       int i;
 115 +       for (i = 0; i < 1; i++) {
 116 +               if (!mymtds[i])
 117 +                       continue;
 118 +
 119 +               if (nr_parsed_parts[i] || !i)
 120 +                       del_mtd_partitions(mymtds[i]);
 121 +               else
 122 +                       del_mtd_device(mymtds[i]);
 123 +
 124 +               map_destroy(mymtds[i]);
 125 +               iounmap((void *)gumstix_flash_maps[i].virt);
 126 +               if (gumstix_flash_maps[i].cached)
 127 +                       iounmap(gumstix_flash_maps[i].cached);
 128 +
 129 +               if (parsed_parts[i])
 130 +                       kfree(parsed_parts[i]);
 131 +       }
 132 +}
 133 +
 134 +module_init(gumstix_flashmap_init);
 135 +module_exit(gumstix_flashmap_cleanup);
 136 +
 137 +MODULE_LICENSE("GPL");
 138 +MODULE_AUTHOR("Gumstix, Inc. <gumstix-users@lists.sf.net>");
 139 +MODULE_DESCRIPTION("MTD map driver for the Gumstix Platform");
 140 --- a/drivers/mtd/maps/Kconfig
 141 +++ b/drivers/mtd/maps/Kconfig
 142 @@ -131,6 +131,13 @@ config MTD_SBC_GXX
 143           More info at
 144           <http://www.arcomcontrols.com/products/icp/pc104/processors/SBC_GX1.htm>.
 145
 146 +config MTD_GUMSTIX
 147 +       tristate "CFI Flash device mapped on Gumstix"
 148 +       depends on ARCH_GUMSTIX && MTD_CFI_INTELEXT && MTD_PARTITIONS
 149 +       help
 150 +         This provides a driver for the on-board flash of the Gumstix
 151 +         single board computers.
 152 +
 153  config MTD_LUBBOCK
 154         tristate "CFI Flash device mapped on Intel Lubbock XScale eval board"
 155         depends on ARCH_LUBBOCK && MTD_CFI_INTELEXT && MTD_PARTITIONS
 156 --- a/drivers/mtd/maps/Makefile
 157 +++ b/drivers/mtd/maps/Makefile
 158 @@ -21,6 +21,7 @@ obj-$(CONFIG_MTD_ICHXROM)     += ichxrom.o
 159  obj-$(CONFIG_MTD_CK804XROM)    += ck804xrom.o
 160  obj-$(CONFIG_MTD_TSUNAMI)      += tsunami_flash.o
 161  obj-$(CONFIG_MTD_LUBBOCK)      += lubbock-flash.o
 162 +obj-$(CONFIG_MTD_GUMSTIX)      += gumstix-flash.o
 163  obj-$(CONFIG_MTD_MAINSTONE)    += mainstone-flash.o
 164  obj-$(CONFIG_MTD_MBX860)       += mbx860.o
 165  obj-$(CONFIG_MTD_CEIVA)                += ceiva.o