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Diffstat (limited to 'drivers/mtd/maps/bast-flash.c')
-rw-r--r--drivers/mtd/maps/bast-flash.c226
1 files changed, 0 insertions, 226 deletions
diff --git a/drivers/mtd/maps/bast-flash.c b/drivers/mtd/maps/bast-flash.c
deleted file mode 100644
index 1f492062f8ca..000000000000
--- a/drivers/mtd/maps/bast-flash.c
+++ /dev/null
@@ -1,226 +0,0 @@
1/* linux/drivers/mtd/maps/bast-flash.c
2 *
3 * Copyright (c) 2004-2005 Simtec Electronics
4 * Ben Dooks <ben@simtec.co.uk>
5 *
6 * Simtec Bast (EB2410ITX) NOR MTD Mapping driver
7 *
8 * Changelog:
9 * 20-Sep-2004 BJD Initial version
10 * 17-Jan-2005 BJD Add whole device if no partitions found
11 *
12 * $Id: bast-flash.c,v 1.5 2005/11/07 11:14:26 gleixner Exp $
13 *
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2 of the License, or
17 * (at your option) any later version.
18 *
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
23 *
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
27*/
28
29#include <linux/module.h>
30#include <linux/types.h>
31#include <linux/init.h>
32#include <linux/kernel.h>
33#include <linux/string.h>
34#include <linux/ioport.h>
35#include <linux/device.h>
36#include <linux/slab.h>
37#include <linux/platform_device.h>
38#include <linux/mtd/mtd.h>
39#include <linux/mtd/map.h>
40#include <linux/mtd/partitions.h>
41
42#include <asm/io.h>
43#include <asm/mach/flash.h>
44
45#include <asm/arch/map.h>
46#include <asm/arch/bast-map.h>
47#include <asm/arch/bast-cpld.h>
48
49#ifdef CONFIG_MTD_BAST_MAXSIZE
50#define AREA_MAXSIZE (CONFIG_MTD_BAST_MAXSIZE * SZ_1M)
51#else
52#define AREA_MAXSIZE (32 * SZ_1M)
53#endif
54
55#define PFX "bast-flash: "
56
57struct bast_flash_info {
58 struct mtd_info *mtd;
59 struct map_info map;
60 struct mtd_partition *partitions;
61 struct resource *area;
62};
63
64static const char *probes[] = { "RedBoot", "cmdlinepart", NULL };
65
66static void bast_flash_setrw(int to)
67{
68 unsigned int val;
69 unsigned long flags;
70
71 local_irq_save(flags);
72 val = __raw_readb(BAST_VA_CTRL3);
73
74 if (to)
75 val |= BAST_CPLD_CTRL3_ROMWEN;
76 else
77 val &= ~BAST_CPLD_CTRL3_ROMWEN;
78
79 pr_debug("new cpld ctrl3=%02x\n", val);
80
81 __raw_writeb(val, BAST_VA_CTRL3);
82 local_irq_restore(flags);
83}
84
85static int bast_flash_remove(struct platform_device *pdev)
86{
87 struct bast_flash_info *info = platform_get_drvdata(pdev);
88
89 platform_set_drvdata(pdev, NULL);
90
91 if (info == NULL)
92 return 0;
93
94 if (info->map.virt != NULL)
95 iounmap(info->map.virt);
96
97 if (info->mtd) {
98 del_mtd_partitions(info->mtd);
99 map_destroy(info->mtd);
100 }
101
102 kfree(info->partitions);
103
104 if (info->area) {
105 release_resource(info->area);
106 kfree(info->area);
107 }
108
109 kfree(info);
110
111 return 0;
112}
113
114static int bast_flash_probe(struct platform_device *pdev)
115{
116 struct bast_flash_info *info;
117 struct resource *res;
118 int err = 0;
119
120 info = kmalloc(sizeof(*info), GFP_KERNEL);
121 if (info == NULL) {
122 printk(KERN_ERR PFX "no memory for flash info\n");
123 err = -ENOMEM;
124 goto exit_error;
125 }
126
127 memzero(info, sizeof(*info));
128 platform_set_drvdata(pdev, info);
129
130 res = pdev->resource; /* assume that the flash has one resource */
131
132 info->map.phys = res->start;
133 info->map.size = res->end - res->start + 1;
134 info->map.name = pdev->dev.bus_id;
135 info->map.bankwidth = 2;
136
137 if (info->map.size > AREA_MAXSIZE)
138 info->map.size = AREA_MAXSIZE;
139
140 pr_debug("%s: area %08lx, size %ld\n", __func__,
141 info->map.phys, info->map.size);
142
143 info->area = request_mem_region(res->start, info->map.size,
144 pdev->name);
145 if (info->area == NULL) {
146 printk(KERN_ERR PFX "cannot reserve flash memory region\n");
147 err = -ENOENT;
148 goto exit_error;
149 }
150
151 info->map.virt = ioremap(res->start, info->map.size);
152 pr_debug("%s: virt at %08x\n", __func__, (int)info->map.virt);
153
154 if (info->map.virt == 0) {
155 printk(KERN_ERR PFX "failed to ioremap() region\n");
156 err = -EIO;
157 goto exit_error;
158 }
159
160 simple_map_init(&info->map);
161
162 /* enable the write to the flash area */
163
164 bast_flash_setrw(1);
165
166 /* probe for the device(s) */
167
168 info->mtd = do_map_probe("jedec_probe", &info->map);
169 if (info->mtd == NULL)
170 info->mtd = do_map_probe("cfi_probe", &info->map);
171
172 if (info->mtd == NULL) {
173 printk(KERN_ERR PFX "map_probe() failed\n");
174 err = -ENXIO;
175 goto exit_error;
176 }
177
178 /* mark ourselves as the owner */
179 info->mtd->owner = THIS_MODULE;
180
181 err = parse_mtd_partitions(info->mtd, probes, &info->partitions, 0);
182 if (err > 0) {
183 err = add_mtd_partitions(info->mtd, info->partitions, err);
184 if (err)
185 printk(KERN_ERR PFX "cannot add/parse partitions\n");
186 } else {
187 err = add_mtd_device(info->mtd);
188 }
189
190 if (err == 0)
191 return 0;
192
193 /* fall through to exit error */
194
195 exit_error:
196 bast_flash_remove(pdev);
197 return err;
198}
199
200static struct platform_driver bast_flash_driver = {
201 .probe = bast_flash_probe,
202 .remove = bast_flash_remove,
203 .driver = {
204 .name = "bast-nor",
205 .owner = THIS_MODULE,
206 },
207};
208
209static int __init bast_flash_init(void)
210{
211 printk("BAST NOR-Flash Driver, (c) 2004 Simtec Electronics\n");
212 return platform_driver_register(&bast_flash_driver);
213}
214
215static void __exit bast_flash_exit(void)
216{
217 platform_driver_unregister(&bast_flash_driver);
218}
219
220module_init(bast_flash_init);
221module_exit(bast_flash_exit);
222
223MODULE_LICENSE("GPL");
224MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
225MODULE_DESCRIPTION("BAST MTD Map driver");
226MODULE_ALIAS("platform:bast-nor");
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