2 * Flash memory access on Hynix GMS30C7201/HMS30C7202 based
5 * (C) 2002 Jungjun Kim <jungjun.kim@hynix.com>
6 * 2003 Thomas Gleixner <tglx@linutronix.de>
9 #include <linux/module.h>
10 #include <linux/types.h>
11 #include <linux/kernel.h>
12 #include <linux/init.h>
13 #include <linux/errno.h>
14 #include <linux/slab.h>
16 #include <linux/mtd/mtd.h>
17 #include <linux/mtd/map.h>
18 #include <linux/mtd/partitions.h>
19 #include <mach/hardware.h>
22 static struct mtd_info
*mymtd
;
24 static struct map_info h720x_map
= {
27 .size
= H720X_FLASH_SIZE
,
28 .phys
= H720X_FLASH_PHYS
,
31 static struct mtd_partition h720x_partitions
[] = {
36 .mask_flags
= MTD_WRITEABLE
41 .mask_flags
= MTD_WRITEABLE
46 .mask_flags
= MTD_WRITEABLE
51 .mask_flags
= MTD_WRITEABLE
54 .size
= MTDPART_SIZ_FULL
,
55 .offset
= MTDPART_OFS_APPEND
59 #define NUM_PARTITIONS ARRAY_SIZE(h720x_partitions)
61 static int nr_mtd_parts
;
62 static struct mtd_partition
*mtd_parts
;
64 * Initialize FLASH support
66 static int __init
h720x_mtd_init(void)
69 char *part_type
= NULL
;
71 h720x_map
.virt
= ioremap(h720x_map
.phys
, h720x_map
.size
);
73 if (!h720x_map
.virt
) {
74 printk(KERN_ERR
"H720x-MTD: ioremap failed\n");
78 simple_map_init(&h720x_map
);
80 // Probe for flash bankwidth 4
81 printk (KERN_INFO
"H720x-MTD probing 32bit FLASH\n");
82 mymtd
= do_map_probe("cfi_probe", &h720x_map
);
84 printk (KERN_INFO
"H720x-MTD probing 16bit FLASH\n");
85 // Probe for bankwidth 2
86 h720x_map
.bankwidth
= 2;
87 mymtd
= do_map_probe("cfi_probe", &h720x_map
);
91 mymtd
->owner
= THIS_MODULE
;
93 nr_mtd_parts
= parse_mtd_partitions(mymtd
, NULL
, &mtd_parts
, 0);
95 part_type
= "command line";
96 if (nr_mtd_parts
<= 0) {
97 mtd_parts
= h720x_partitions
;
98 nr_mtd_parts
= NUM_PARTITIONS
;
99 part_type
= "builtin";
101 printk(KERN_INFO
"Using %s partition table\n", part_type
);
102 mtd_device_register(mymtd
, mtd_parts
, nr_mtd_parts
);
106 iounmap((void *)h720x_map
.virt
);
113 static void __exit
h720x_mtd_cleanup(void)
117 mtd_device_unregister(mymtd
);
121 /* Free partition info, if commandline partition was used */
122 if (mtd_parts
&& (mtd_parts
!= h720x_partitions
))
125 if (h720x_map
.virt
) {
126 iounmap((void *)h720x_map
.virt
);
132 module_init(h720x_mtd_init
);
133 module_exit(h720x_mtd_cleanup
);
135 MODULE_LICENSE("GPL");
136 MODULE_AUTHOR("Thomas Gleixner <tglx@linutronix.de>");
137 MODULE_DESCRIPTION("MTD map driver for Hynix evaluation boards");