/* * $Id: dbox2-flash.c,v 1.14 2005/11/07 11:14:26 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/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, }; 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 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");