mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-11 21:14:07 +08:00
8db2a08ee4
Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
121 lines
2.7 KiB
C
121 lines
2.7 KiB
C
/*
|
|
* Flash memory access on Hynix GMS30C7201/HMS30C7202 based
|
|
* evaluation boards
|
|
*
|
|
* (C) 2002 Jungjun Kim <jungjun.kim@hynix.com>
|
|
* 2003 Thomas Gleixner <tglx@linutronix.de>
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/types.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/slab.h>
|
|
|
|
#include <linux/mtd/mtd.h>
|
|
#include <linux/mtd/map.h>
|
|
#include <linux/mtd/partitions.h>
|
|
#include <mach/hardware.h>
|
|
#include <asm/io.h>
|
|
|
|
static struct mtd_info *mymtd;
|
|
|
|
static struct map_info h720x_map = {
|
|
.name = "H720X",
|
|
.bankwidth = 4,
|
|
.size = H720X_FLASH_SIZE,
|
|
.phys = H720X_FLASH_PHYS,
|
|
};
|
|
|
|
static struct mtd_partition h720x_partitions[] = {
|
|
{
|
|
.name = "ArMon",
|
|
.size = 0x00080000,
|
|
.offset = 0,
|
|
.mask_flags = MTD_WRITEABLE
|
|
},{
|
|
.name = "Env",
|
|
.size = 0x00040000,
|
|
.offset = 0x00080000,
|
|
.mask_flags = MTD_WRITEABLE
|
|
},{
|
|
.name = "Kernel",
|
|
.size = 0x00180000,
|
|
.offset = 0x000c0000,
|
|
.mask_flags = MTD_WRITEABLE
|
|
},{
|
|
.name = "Ramdisk",
|
|
.size = 0x00400000,
|
|
.offset = 0x00240000,
|
|
.mask_flags = MTD_WRITEABLE
|
|
},{
|
|
.name = "jffs2",
|
|
.size = MTDPART_SIZ_FULL,
|
|
.offset = MTDPART_OFS_APPEND
|
|
}
|
|
};
|
|
|
|
#define NUM_PARTITIONS ARRAY_SIZE(h720x_partitions)
|
|
|
|
/*
|
|
* Initialize FLASH support
|
|
*/
|
|
static int __init h720x_mtd_init(void)
|
|
{
|
|
h720x_map.virt = ioremap(h720x_map.phys, h720x_map.size);
|
|
|
|
if (!h720x_map.virt) {
|
|
printk(KERN_ERR "H720x-MTD: ioremap failed\n");
|
|
return -EIO;
|
|
}
|
|
|
|
simple_map_init(&h720x_map);
|
|
|
|
// Probe for flash bankwidth 4
|
|
printk (KERN_INFO "H720x-MTD probing 32bit FLASH\n");
|
|
mymtd = do_map_probe("cfi_probe", &h720x_map);
|
|
if (!mymtd) {
|
|
printk (KERN_INFO "H720x-MTD probing 16bit FLASH\n");
|
|
// Probe for bankwidth 2
|
|
h720x_map.bankwidth = 2;
|
|
mymtd = do_map_probe("cfi_probe", &h720x_map);
|
|
}
|
|
|
|
if (mymtd) {
|
|
mymtd->owner = THIS_MODULE;
|
|
|
|
mtd_device_parse_register(mymtd, NULL, 0,
|
|
h720x_partitions, NUM_PARTITIONS);
|
|
return 0;
|
|
}
|
|
|
|
iounmap((void *)h720x_map.virt);
|
|
return -ENXIO;
|
|
}
|
|
|
|
/*
|
|
* Cleanup
|
|
*/
|
|
static void __exit h720x_mtd_cleanup(void)
|
|
{
|
|
|
|
if (mymtd) {
|
|
mtd_device_unregister(mymtd);
|
|
map_destroy(mymtd);
|
|
}
|
|
|
|
if (h720x_map.virt) {
|
|
iounmap((void *)h720x_map.virt);
|
|
h720x_map.virt = 0;
|
|
}
|
|
}
|
|
|
|
|
|
module_init(h720x_mtd_init);
|
|
module_exit(h720x_mtd_cleanup);
|
|
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_AUTHOR("Thomas Gleixner <tglx@linutronix.de>");
|
|
MODULE_DESCRIPTION("MTD map driver for Hynix evaluation boards");
|