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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/mtd/maps/dbox2-flash.c | |
download | op-kernel-dev-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.zip op-kernel-dev-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'drivers/mtd/maps/dbox2-flash.c')
-rw-r--r-- | drivers/mtd/maps/dbox2-flash.c | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/drivers/mtd/maps/dbox2-flash.c b/drivers/mtd/maps/dbox2-flash.c new file mode 100644 index 0000000..d850a27 --- /dev/null +++ b/drivers/mtd/maps/dbox2-flash.c @@ -0,0 +1,126 @@ +/* + * $Id: dbox2-flash.c,v 1.13 2004/11/04 13:24:14 gleixner Exp $ + * + * 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/config.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 (sizeof(partition_info) / sizeof(partition_info[0])) + +#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, +}; + +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. */ + add_mtd_partitions(mymtd, partition_info, NUM_PARTITIONS); + + return 0; + } + + iounmap((void *)dbox2_flash_map.virt); + return -ENXIO; +} + +static void __exit cleanup_dbox2_flash(void) +{ + if (mymtd) { + del_mtd_partitions(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 Davíđsson <kd@flaga.is>, Bastian Blank <waldi@tuxbox.org>, Alexander Wild <wild@te-elektronik.com>"); +MODULE_DESCRIPTION("MTD map driver for D-Box 2 board"); |