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Diffstat (limited to 'drivers/mtd/maps/pb1550-flash.c')
-rw-r--r--drivers/mtd/maps/pb1550-flash.c203
1 files changed, 0 insertions, 203 deletions
diff --git a/drivers/mtd/maps/pb1550-flash.c b/drivers/mtd/maps/pb1550-flash.c
deleted file mode 100644
index 1424726a219e..000000000000
--- a/drivers/mtd/maps/pb1550-flash.c
+++ /dev/null
@@ -1,203 +0,0 @@
1/*
2 * Flash memory access on Alchemy Pb1550 board
3 *
4 * $Id: pb1550-flash.c,v 1.6 2004/11/04 13:24:15 gleixner Exp $
5 *
6 * (C) 2004 Embedded Edge, LLC, based on pb1550-flash.c:
7 * (C) 2003 Pete Popov <ppopov@pacbell.net>
8 *
9 */
10
11#include <linux/config.h>
12#include <linux/init.h>
13#include <linux/module.h>
14#include <linux/types.h>
15#include <linux/kernel.h>
16
17#include <linux/mtd/mtd.h>
18#include <linux/mtd/map.h>
19#include <linux/mtd/partitions.h>
20
21#include <asm/io.h>
22#include <asm/au1000.h>
23#include <asm/pb1550.h>
24
25#ifdef DEBUG_RW
26#define DBG(x...) printk(x)
27#else
28#define DBG(x...)
29#endif
30
31static unsigned long window_addr;
32static unsigned long window_size;
33
34
35static struct map_info pb1550_map = {
36 .name = "Pb1550 flash",
37};
38
39static unsigned char flash_bankwidth = 4;
40
41/*
42 * Support only 64MB NOR Flash parts
43 */
44
45#ifdef PB1550_BOTH_BANKS
46/* both banks will be used. Combine the first bank and the first
47 * part of the second bank together into a single jffs/jffs2
48 * partition.
49 */
50static struct mtd_partition pb1550_partitions[] = {
51 /* assume boot[2:0]:swap is '0000' or '1000', which translates to:
52 * 1C00 0000 1FFF FFFF CE0 64MB Boot NOR Flash
53 * 1800 0000 1BFF FFFF CE0 64MB Param NOR Flash
54 */
55 {
56 .name = "User FS",
57 .size = (0x1FC00000 - 0x18000000),
58 .offset = 0x0000000
59 },{
60 .name = "yamon",
61 .size = 0x0100000,
62 .offset = MTDPART_OFS_APPEND,
63 .mask_flags = MTD_WRITEABLE
64 },{
65 .name = "raw kernel",
66 .size = (0x300000 - 0x40000), /* last 256KB is yamon env */
67 .offset = MTDPART_OFS_APPEND,
68 }
69};
70#elif defined(PB1550_BOOT_ONLY)
71static struct mtd_partition pb1550_partitions[] = {
72 /* assume boot[2:0]:swap is '0000' or '1000', which translates to:
73 * 1C00 0000 1FFF FFFF CE0 64MB Boot NOR Flash
74 */
75 {
76 .name = "User FS",
77 .size = 0x03c00000,
78 .offset = 0x0000000
79 },{
80 .name = "yamon",
81 .size = 0x0100000,
82 .offset = MTDPART_OFS_APPEND,
83 .mask_flags = MTD_WRITEABLE
84 },{
85 .name = "raw kernel",
86 .size = (0x300000-0x40000), /* last 256KB is yamon env */
87 .offset = MTDPART_OFS_APPEND,
88 }
89};
90#elif defined(PB1550_USER_ONLY)
91static struct mtd_partition pb1550_partitions[] = {
92 /* assume boot[2:0]:swap is '0000' or '1000', which translates to:
93 * 1800 0000 1BFF FFFF CE0 64MB Param NOR Flash
94 */
95 {
96 .name = "User FS",
97 .size = (0x4000000 - 0x200000), /* reserve 2MB for raw kernel */
98 .offset = 0x0000000
99 },{
100 .name = "raw kernel",
101 .size = MTDPART_SIZ_FULL,
102 .offset = MTDPART_OFS_APPEND,
103 }
104};
105#else
106#error MTD_PB1550 define combo error /* should never happen */
107#endif
108
109#define NB_OF(x) (sizeof(x)/sizeof(x[0]))
110
111static struct mtd_info *mymtd;
112
113/*
114 * Probe the flash density and setup window address and size
115 * based on user CONFIG options. There are times when we don't
116 * want the MTD driver to be probing the boot or user flash,
117 * so having the option to enable only one bank is important.
118 */
119int setup_flash_params(void)
120{
121 u16 boot_swapboot;
122 boot_swapboot = (au_readl(MEM_STSTAT) & (0x7<<1)) |
123 ((bcsr->status >> 6) & 0x1);
124 printk("Pb1550 MTD: boot:swap %d\n", boot_swapboot);
125
126 switch (boot_swapboot) {
127 case 0: /* 512Mbit devices, both enabled */
128 case 1:
129 case 8:
130 case 9:
131#if defined(PB1550_BOTH_BANKS)
132 window_addr = 0x18000000;
133 window_size = 0x8000000;
134#elif defined(PB1550_BOOT_ONLY)
135 window_addr = 0x1C000000;
136 window_size = 0x4000000;
137#else /* USER ONLY */
138 window_addr = 0x1E000000;
139 window_size = 0x4000000;
140#endif
141 break;
142 case 0xC:
143 case 0xD:
144 case 0xE:
145 case 0xF:
146 /* 64 MB Boot NOR Flash is disabled */
147 /* and the start address is moved to 0x0C00000 */
148 window_addr = 0x0C000000;
149 window_size = 0x4000000;
150 default:
151 printk("Pb1550 MTD: unsupported boot:swap setting\n");
152 return 1;
153 }
154 return 0;
155}
156
157int __init pb1550_mtd_init(void)
158{
159 struct mtd_partition *parts;
160 int nb_parts = 0;
161
162 /* Default flash bankwidth */
163 pb1550_map.bankwidth = flash_bankwidth;
164
165 if (setup_flash_params())
166 return -ENXIO;
167
168 /*
169 * Static partition definition selection
170 */
171 parts = pb1550_partitions;
172 nb_parts = NB_OF(pb1550_partitions);
173 pb1550_map.size = window_size;
174
175 /*
176 * Now let's probe for the actual flash. Do it here since
177 * specific machine settings might have been set above.
178 */
179 printk(KERN_NOTICE "Pb1550 flash: probing %d-bit flash bus\n",
180 pb1550_map.bankwidth*8);
181 pb1550_map.virt = ioremap(window_addr, window_size);
182 mymtd = do_map_probe("cfi_probe", &pb1550_map);
183 if (!mymtd) return -ENXIO;
184 mymtd->owner = THIS_MODULE;
185
186 add_mtd_partitions(mymtd, parts, nb_parts);
187 return 0;
188}
189
190static void __exit pb1550_mtd_cleanup(void)
191{
192 if (mymtd) {
193 del_mtd_partitions(mymtd);
194 map_destroy(mymtd);
195 }
196}
197
198module_init(pb1550_mtd_init);
199module_exit(pb1550_mtd_cleanup);
200
201MODULE_AUTHOR("Embedded Edge, LLC");
202MODULE_DESCRIPTION("Pb1550 mtd map driver");
203MODULE_LICENSE("GPL");
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