1/* 2 * D-Box 2 flash driver 3 */ 4 5#include <linux/module.h> 6#include <linux/types.h> 7#include <linux/kernel.h> 8#include <linux/init.h> 9#include <asm/io.h> 10#include <linux/mtd/mtd.h> 11#include <linux/mtd/map.h> 12#include <linux/mtd/partitions.h> 13#include <linux/errno.h> 14 15/* partition_info gives details on the logical partitions that the split the 16 * single flash device into. If the size if zero we use up to the end of the 17 * device. */ 18static struct mtd_partition partition_info[]= { 19 { 20 .name = "BR bootloader", 21 .size = 128 * 1024, 22 .offset = 0, 23 .mask_flags = MTD_WRITEABLE 24 }, 25 { 26 .name = "FLFS (U-Boot)", 27 .size = 128 * 1024, 28 .offset = MTDPART_OFS_APPEND, 29 .mask_flags = 0 30 }, 31 { 32 .name = "Root (SquashFS)", 33 .size = 7040 * 1024, 34 .offset = MTDPART_OFS_APPEND, 35 .mask_flags = 0 36 }, 37 { 38 .name = "var (JFFS2)", 39 .size = 896 * 1024, 40 .offset = MTDPART_OFS_APPEND, 41 .mask_flags = 0 42 }, 43 { 44 .name = "Flash without bootloader", 45 .size = MTDPART_SIZ_FULL, 46 .offset = 128 * 1024, 47 .mask_flags = 0 48 }, 49 { 50 .name = "Complete Flash", 51 .size = MTDPART_SIZ_FULL, 52 .offset = 0, 53 .mask_flags = MTD_WRITEABLE 54 } 55}; 56 57#define NUM_PARTITIONS ARRAY_SIZE(partition_info) 58 59#define WINDOW_ADDR 0x10000000 60#define WINDOW_SIZE 0x800000 61 62static struct mtd_info *mymtd; 63 64 65struct map_info dbox2_flash_map = { 66 .name = "D-Box 2 flash memory", 67 .size = WINDOW_SIZE, 68 .bankwidth = 4, 69 .phys = WINDOW_ADDR, 70}; 71 72static int __init init_dbox2_flash(void) 73{ 74 printk(KERN_NOTICE "D-Box 2 flash driver (size->0x%X mem->0x%X)\n", WINDOW_SIZE, WINDOW_ADDR); 75 dbox2_flash_map.virt = ioremap(WINDOW_ADDR, WINDOW_SIZE); 76 77 if (!dbox2_flash_map.virt) { 78 printk("Failed to ioremap\n"); 79 return -EIO; 80 } 81 simple_map_init(&dbox2_flash_map); 82 83 // Probe for dual Intel 28F320 or dual AMD 84 mymtd = do_map_probe("cfi_probe", &dbox2_flash_map); 85 if (!mymtd) { 86 // Probe for single Intel 28F640 87 dbox2_flash_map.bankwidth = 2; 88 89 mymtd = do_map_probe("cfi_probe", &dbox2_flash_map); 90 } 91 92 if (mymtd) { 93 mymtd->owner = THIS_MODULE; 94 95 /* Create MTD devices for each partition. */ 96 add_mtd_partitions(mymtd, partition_info, NUM_PARTITIONS); 97 98 return 0; 99 } 100 101 iounmap((void *)dbox2_flash_map.virt); 102 return -ENXIO; 103} 104 105static void __exit cleanup_dbox2_flash(void) 106{ 107 if (mymtd) { 108 del_mtd_partitions(mymtd); 109 map_destroy(mymtd); 110 } 111 if (dbox2_flash_map.virt) { 112 iounmap((void *)dbox2_flash_map.virt); 113 dbox2_flash_map.virt = 0; 114 } 115} 116 117module_init(init_dbox2_flash); 118module_exit(cleanup_dbox2_flash); 119 120 121MODULE_LICENSE("GPL"); 122MODULE_AUTHOR("K��ri Dav����sson <kd@flaga.is>, Bastian Blank <waldi@tuxbox.org>, Alexander Wild <wild@te-elektronik.com>"); 123MODULE_DESCRIPTION("MTD map driver for D-Box 2 board"); 124