diff options
Diffstat (limited to 'target/linux/rdc/files/drivers/mtd/maps/r8610.c')
-rw-r--r-- | target/linux/rdc/files/drivers/mtd/maps/r8610.c | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/target/linux/rdc/files/drivers/mtd/maps/r8610.c b/target/linux/rdc/files/drivers/mtd/maps/r8610.c new file mode 100644 index 000000000..4401bfff1 --- /dev/null +++ b/target/linux/rdc/files/drivers/mtd/maps/r8610.c @@ -0,0 +1,97 @@ +/* + * Flash memory access on RDC R8610 Evaluation board + * + * (C) 2009, Florian Fainelli + */ + +#include <linux/init.h> +#include <linux/module.h> +#include <linux/types.h> +#include <linux/kernel.h> + +#include <linux/mtd/mtd.h> +#include <linux/mtd/map.h> +#include <linux/mtd/partitions.h> + +#include <asm/io.h> + +static struct map_info r8610_map = { + .name = "r8610", + .size = CONFIG_MTD_RDC3210_SIZE, + .bankwidth = CONFIG_MTD_RDC3210_BUSWIDTH, +}; + +static struct mtd_partition r8610_partitions[] = { + { + .name = "Kernel", + .size = 0x001f0000, + .offset = 0 + },{ + .name = "Config", + .size = 0x10000, + .offset = MTDPART_OFS_APPEND, + },{ + .name = "Initrd", + .size = 0x1E0000, + .offset = MTDPART_OFS_APPEND, + },{ + .name = "Redboot", + .size = 0x20000, + .offset = MTDPART_OFS_APPEND, + .mask_flags = MTD_WRITEABLE + } +}; + +static struct mtd_info *mymtd; + +int __init r8610_mtd_init(void) +{ + struct mtd_partition *parts; + int nb_parts = 0; + + /* + * Static partition definition selection + */ + parts = r8610_partitions; + nb_parts = ARRAY_SIZE(r8610_partitions); + + /* + * Now let's probe for the actual flash. Do it here since + * specific machine settings might have been set above. + */ + r8610_map.phys = -r8610_map.size; + printk(KERN_NOTICE "r8610: flash device: %lx at %x\n", r8610_map.size, r8610_map.phys); + + r8610_map.map_priv_1 = (unsigned long)(r8610_map.virt = ioremap_nocache(r8610_map.phys, r8610_map.size)); + if (!r8610_map.map_priv_1) { + printk(KERN_ERR "Failed to ioremap\n"); + return -EIO; + } + + mymtd = do_map_probe("cfi_probe", &r8610_map); + if (!mymtd) { + iounmap(r8610_map.virt); + return -ENXIO; + } + mymtd->owner = THIS_MODULE; + + add_mtd_partitions(mymtd, parts, nb_parts); + + return 0; +} + +static void __exit r8610_mtd_cleanup(void) +{ + if (mymtd) { + del_mtd_partitions(mymtd); + map_destroy(mymtd); + iounmap(r8610_map.virt); + } +} + +module_init(r8610_mtd_init); +module_exit(r8610_mtd_cleanup); + +MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org>"); +MODULE_DESCRIPTION("RDC R8610 MTD driver"); +MODULE_LICENSE("GPL"); |