diff options
author | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
---|---|---|
committer | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
commit | 871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch) | |
tree | 8718f573808810c2a1e8cb8fb6ac469093ca2784 /drivers/mtd/maps/dbox2-flash.c | |
parent | 9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff) | |
download | FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.gz FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.bz2 FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.zip |
Moved, renamed, and deleted files
The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.
Diffstat (limited to 'drivers/mtd/maps/dbox2-flash.c')
-rw-r--r-- | drivers/mtd/maps/dbox2-flash.c | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/drivers/mtd/maps/dbox2-flash.c b/drivers/mtd/maps/dbox2-flash.c new file mode 100644 index 00000000..85bdece6 --- /dev/null +++ b/drivers/mtd/maps/dbox2-flash.c @@ -0,0 +1,123 @@ +/* + * D-Box 2 flash driver + */ + +#include <linux/module.h> +#include <linux/types.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <asm/io.h> +#include <linux/mtd/mtd.h> +#include <linux/mtd/map.h> +#include <linux/mtd/partitions.h> +#include <linux/errno.h> + +/* partition_info gives details on the logical partitions that the split the + * single flash device into. If the size if zero we use up to the end of the + * device. */ +static struct mtd_partition partition_info[]= { + { + .name = "BR bootloader", + .size = 128 * 1024, + .offset = 0, + .mask_flags = MTD_WRITEABLE + }, + { + .name = "FLFS (U-Boot)", + .size = 128 * 1024, + .offset = MTDPART_OFS_APPEND, + .mask_flags = 0 + }, + { + .name = "Root (SquashFS)", + .size = 7040 * 1024, + .offset = MTDPART_OFS_APPEND, + .mask_flags = 0 + }, + { + .name = "var (JFFS2)", + .size = 896 * 1024, + .offset = MTDPART_OFS_APPEND, + .mask_flags = 0 + }, + { + .name = "Flash without bootloader", + .size = MTDPART_SIZ_FULL, + .offset = 128 * 1024, + .mask_flags = 0 + }, + { + .name = "Complete Flash", + .size = MTDPART_SIZ_FULL, + .offset = 0, + .mask_flags = MTD_WRITEABLE + } +}; + +#define NUM_PARTITIONS ARRAY_SIZE(partition_info) + +#define WINDOW_ADDR 0x10000000 +#define WINDOW_SIZE 0x800000 + +static struct mtd_info *mymtd; + + +struct map_info dbox2_flash_map = { + .name = "D-Box 2 flash memory", + .size = WINDOW_SIZE, + .bankwidth = 4, + .phys = WINDOW_ADDR, +}; + +static int __init init_dbox2_flash(void) +{ + printk(KERN_NOTICE "D-Box 2 flash driver (size->0x%X mem->0x%X)\n", WINDOW_SIZE, WINDOW_ADDR); + dbox2_flash_map.virt = ioremap(WINDOW_ADDR, WINDOW_SIZE); + + if (!dbox2_flash_map.virt) { + printk("Failed to ioremap\n"); + return -EIO; + } + simple_map_init(&dbox2_flash_map); + + // Probe for dual Intel 28F320 or dual AMD + mymtd = do_map_probe("cfi_probe", &dbox2_flash_map); + if (!mymtd) { + // Probe for single Intel 28F640 + dbox2_flash_map.bankwidth = 2; + + mymtd = do_map_probe("cfi_probe", &dbox2_flash_map); + } + + if (mymtd) { + mymtd->owner = THIS_MODULE; + + /* Create MTD devices for each partition. */ + mtd_device_register(mymtd, partition_info, NUM_PARTITIONS); + + return 0; + } + + iounmap((void *)dbox2_flash_map.virt); + return -ENXIO; +} + +static void __exit cleanup_dbox2_flash(void) +{ + if (mymtd) { + mtd_device_unregister(mymtd); + map_destroy(mymtd); + } + if (dbox2_flash_map.virt) { + iounmap((void *)dbox2_flash_map.virt); + dbox2_flash_map.virt = 0; + } +} + +module_init(init_dbox2_flash); +module_exit(cleanup_dbox2_flash); + + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Kári Davíðsson <kd@flaga.is>, Bastian Blank <waldi@tuxbox.org>, Alexander Wild <wild@te-elektronik.com>"); +MODULE_DESCRIPTION("MTD map driver for D-Box 2 board"); |