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

   1 Index: linux-2.6.21.7/drivers/mtd/maps/gumstix-flash.c
   2 ===================================================================
   3 --- /dev/null
   4 +++ linux-2.6.21.7/drivers/mtd/maps/gumstix-flash.c
   5 @@ -0,0 +1,136 @@
   6 +/*
   7 + * Map driver for the Gumstix platform
   8 + *
   9 + * Author:     Craig Hughes
  10 + *
  11 + * This program is free software; you can redistribute it and/or modify
  12 + * it under the terms of the GNU General Public License version 2 as
  13 + * published by the Free Software Foundation.
  14 + */
  15 +
  16 +#include <linux/module.h>
  17 +#include <linux/types.h>
  18 +#include <linux/kernel.h>
  19 +#include <linux/init.h>
  20 +#include <linux/mtd/mtd.h>
  21 +#include <linux/mtd/map.h>
  22 +#include <linux/mtd/partitions.h>
  23 +#include <asm/io.h>
  24 +#include <asm/hardware.h>
  25 +#include <asm/arch/gumstix.h>
  26 +
  27 +
  28 +#define ROM_ADDR       0x00000000
  29 +#define FLASH_ADDR     0x00000000
  30 +
  31 +#define WINDOW_SIZE    64*1024*1024
  32 +
  33 +static struct map_info gumstix_flash_maps[1] = { {
  34 +       .name =         "Gumstix Flash ROM",
  35 +       .size =         WINDOW_SIZE,
  36 +       .phys =         FLASH_ADDR,
  37 +       .bankwidth =    2,
  38 +} };
  39 +
  40 +static struct mtd_partition gumstix_flash_partitions[] = {
  41 +       {
  42 +               .name =         "Bootloader",
  43 +               .size =         0x00040000,
  44 +               .offset =       FLASH_ADDR
  45 +       },{
  46 +               .name =         "RootFS",
  47 +               .size =         MTDPART_SIZ_FULL,
  48 +               .offset =       MTDPART_OFS_APPEND
  49 +       }
  50 +};
  51 +
  52 +static struct mtd_info *mymtds[1];
  53 +static struct mtd_partition *parsed_parts[1];
  54 +static int nr_parsed_parts[1];
  55 +
  56 +static const char *probes[] = { NULL };
  57 +
  58 +static int __init gumstix_flashmap_init(void)
  59 +{
  60 +       int ret = 0, i;
  61 +
  62 +       for (i = 0; i < 1; i++) {
  63 +               gumstix_flash_maps[i].virt = ioremap(gumstix_flash_maps[i].phys, WINDOW_SIZE);
  64 +               if (!gumstix_flash_maps[i].virt) {
  65 +                       printk(KERN_WARNING "Failed to ioremap %s\n", gumstix_flash_maps[i].name);
  66 +                       if (!ret)
  67 +                               ret = -ENOMEM;
  68 +                       continue;
  69 +               }
  70 +               simple_map_init(&gumstix_flash_maps[i]);
  71 +
  72 +               printk(KERN_NOTICE "Probing %s at physical address 0x%08lx (%d-bit bankwidth)\n",
  73 +                      gumstix_flash_maps[i].name, gumstix_flash_maps[i].phys,
  74 +                      gumstix_flash_maps[i].bankwidth * 8);
  75 +
  76 +               mymtds[i] = do_map_probe("cfi_probe", &gumstix_flash_maps[i]);
  77 +
  78 +               if (!mymtds[i]) {
  79 +                       iounmap((void *)gumstix_flash_maps[i].virt);
  80 +                       if (gumstix_flash_maps[i].cached)
  81 +                               iounmap(gumstix_flash_maps[i].cached);
  82 +                       if (!ret)
  83 +                               ret = -EIO;
  84 +                       continue;
  85 +               }
  86 +               mymtds[i]->owner = THIS_MODULE;
  87 +
  88 +               ret = parse_mtd_partitions(mymtds[i], probes,
  89 +                                          &parsed_parts[i], 0);
  90 +
  91 +               if (ret > 0)
  92 +                       nr_parsed_parts[i] = ret;
  93 +       }
  94 +
  95 +       if (!mymtds[0])
  96 +               return ret;
  97 +
  98 +       for (i = 0; i < 1; i++) {
  99 +               if (!mymtds[i]) {
 100 +                       printk(KERN_WARNING "%s is absent. Skipping\n", gumstix_flash_maps[i].name);
 101 +               } else if (nr_parsed_parts[i]) {
 102 +                       add_mtd_partitions(mymtds[i], parsed_parts[i], nr_parsed_parts[i]);
 103 +               } else if (!i) {
 104 +                       printk("Using static partitions on %s\n", gumstix_flash_maps[i].name);
 105 +                       add_mtd_partitions(mymtds[i], gumstix_flash_partitions, ARRAY_SIZE(gumstix_flash_partitions));
 106 +               } else {
 107 +                       printk("Registering %s as whole device\n", gumstix_flash_maps[i].name);
 108 +                       add_mtd_device(mymtds[i]);
 109 +               }
 110 +       }
 111 +       return 0;
 112 +}
 113 +
 114 +static void __exit gumstix_flashmap_cleanup(void)
 115 +{
 116 +       int i;
 117 +       for (i = 0; i < 1; i++) {
 118 +               if (!mymtds[i])
 119 +                       continue;
 120 +
 121 +               if (nr_parsed_parts[i] || !i)
 122 +                       del_mtd_partitions(mymtds[i]);
 123 +               else
 124 +                       del_mtd_device(mymtds[i]);
 125 +
 126 +               map_destroy(mymtds[i]);
 127 +               iounmap((void *)gumstix_flash_maps[i].virt);
 128 +               if (gumstix_flash_maps[i].cached)
 129 +                       iounmap(gumstix_flash_maps[i].cached);
 130 +
 131 +               if (parsed_parts[i])
 132 +                       kfree(parsed_parts[i]);
 133 +       }
 134 +}
 135 +
 136 +module_init(gumstix_flashmap_init);
 137 +module_exit(gumstix_flashmap_cleanup);
 138 +
 139 +MODULE_LICENSE("GPL");
 140 +MODULE_AUTHOR("Gumstix, Inc. <gumstix-users@lists.sf.net>");
 141 +MODULE_DESCRIPTION("MTD map driver for the Gumstix Platform");
 142 Index: linux-2.6.21.7/drivers/mtd/maps/Kconfig
 143 ===================================================================
 144 --- linux-2.6.21.7.orig/drivers/mtd/maps/Kconfig
 145 +++ linux-2.6.21.7/drivers/mtd/maps/Kconfig
 146 @@ -131,6 +131,13 @@ config MTD_SBC_GXX
 147           More info at
 148           <http://www.arcomcontrols.com/products/icp/pc104/processors/SBC_GX1.htm>.
 149
 150 +config MTD_GUMSTIX
 151 +       tristate "CFI Flash device mapped on Gumstix"
 152 +       depends on ARCH_GUMSTIX && MTD_CFI_INTELEXT && MTD_PARTITIONS
 153 +       help
 154 +         This provides a driver for the on-board flash of the Gumstix
 155 +         single board computers.
 156 +
 157  config MTD_LUBBOCK
 158         tristate "CFI Flash device mapped on Intel Lubbock XScale eval board"
 159         depends on ARCH_LUBBOCK && MTD_CFI_INTELEXT && MTD_PARTITIONS
 160 Index: linux-2.6.21.7/drivers/mtd/maps/Makefile
 161 ===================================================================
 162 --- linux-2.6.21.7.orig/drivers/mtd/maps/Makefile
 163 +++ linux-2.6.21.7/drivers/mtd/maps/Makefile
 164 @@ -21,6 +21,7 @@ obj-$(CONFIG_MTD_ICHXROM)     += ichxrom.o
 165  obj-$(CONFIG_MTD_CK804XROM)    += ck804xrom.o
 166  obj-$(CONFIG_MTD_TSUNAMI)      += tsunami_flash.o
 167  obj-$(CONFIG_MTD_LUBBOCK)      += lubbock-flash.o
 168 +obj-$(CONFIG_MTD_GUMSTIX)      += gumstix-flash.o
 169  obj-$(CONFIG_MTD_MAINSTONE)    += mainstone-flash.o
 170  obj-$(CONFIG_MTD_MBX860)       += mbx860.o
 171  obj-$(CONFIG_MTD_CEIVA)                += ceiva.o