nor flash驱动与nand flash驱动的差别不大，只是设置不同的结构体而已，，
nor flash驱动代码：
#include <linux/module.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/device.h>
#include <linux/platform_device.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/map.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/physmap.h>
#include <linux/mtd/concat.h>
#include <linux/io.h> static struct map_info *nor_map;
static struct mtd_info *nor_mtd;
static unsigned char nr_parts = ;
static struct mtd_partition nor_mtd_partition[] = {
[] = {
.name = "bootloader_nor",
.size = 0x00040000,
.offset = ,
},
[] = {
.name = "root_nor",
.offset = MTDPART_OFS_APPEND,
.size = MTDPART_SIZ_FULL,
}
}; static int __init my_nor_flash_init(void)
{
/*分配一个mtd_info结构体*/
int err;
nor_map = kzalloc(sizeof(struct map_info), GFP_KERNEL);
if(nor_map == NULL) {
printk(KERN_ALERT"map_info kzalloc error\n");
return -ENOMEM;
} /*设置: 物理基地址(phys), 大小(size), 位宽(bankwidth), 虚拟基地址(virt)*/
nor_map->name = "nor flash";
nor_map->phys = ;
nor_map->size = 0x100000; //大于真实nor flash的大小
nor_map->bankwidth = ; //16位 nor_map->virt = ioremap(nor_map->phys,nor_map->size);
if (nor_map->virt == NULL) {
printk(KERN_ALERT"Failed to ioremap flash region\n");
err = -EIO;
goto err_out;
} simple_map_init(nor_map); printk(KERN_ALERT"do_map_probe cfi_probe\n");
nor_mtd = do_map_probe("cfi_probe", nor_map);
if(nor_mtd = NULL) {
printk(KERN_ALERT" do_map_probe jedec_probe\n");
nor_mtd = do_map_probe("jedec_probe", nor_map);
} if(!nor_mtd) {
iounmap(nor_map->virt);
kfree(nor_map);
return -EIO;
}
nor_mtd->owner = THIS_MODULE; /*添加分区*/
if(mtd_device_register(nor_mtd, nor_mtd_partition, nr_parts) != ) {
printk(KERN_ALERT" mtd_device_register error\n");
return -EINVAL;
} return ; err_out:
kfree(nor_map);
return err;
} static void __exit my_nor_flash_exit(void)
{
iounmap(nor_map->virt);
kfree(nor_map);
} module_init(my_nor_flash_init);
module_exit(my_nor_flash_exit);
MODULE_LICENSE("GPL");