blob: dcda099c84182e7d2da67d1eafb55fdda075fa1b [file] [log] [blame]
Kyungmin Parkd7e8ce12007-09-10 17:15:14 +09001/*
2 * U-Boot command for OneNAND support
3 *
4 * Copyright (C) 2005-2007 Samsung Electronics
5 * Kyungmin Park <kyungmin.park@samsung.com>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 */
11
12#include <common.h>
13#include <command.h>
14
15#ifdef CONFIG_CMD_ONENAND
16
17#include <linux/mtd/compat.h>
18#include <linux/mtd/mtd.h>
19#include <linux/mtd/onenand.h>
20
21#include <asm/io.h>
22
23extern struct mtd_info onenand_mtd;
24extern struct onenand_chip onenand_chip;
25
26int do_onenand(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
27{
28 int ret = 0;
29
30 switch (argc) {
31 case 0:
32 case 1:
33 printf("Usage:\n%s\n", cmdtp->usage);
34 return 1;
35
36 case 2:
37 if (strncmp(argv[1], "open", 4) == 0) {
38 onenand_init();
39 return 0;
40 }
41 onenand_print_device_info(onenand_chip.device_id, 1);
42 return 0;
43
44 default:
45 /* At least 4 args */
46 if (strncmp(argv[1], "erase", 5) == 0) {
47 struct erase_info instr;
48 ulong start, end;
49 ulong block;
50
51 start = simple_strtoul(argv[2], NULL, 10);
52 end = simple_strtoul(argv[3], NULL, 10);
53 start -= (unsigned long)onenand_chip.base;
54 end -= (unsigned long)onenand_chip.base;
55
56 if (!end || end < 0)
57 end = start;
58
59 printf("Erase block from %d to %d\n", start, end);
60
61 for (block = start; block <= end; block++) {
62 instr.addr = block << onenand_chip.erase_shift;
63 instr.len = 1 << onenand_chip.erase_shift;
64 ret = onenand_erase(&onenand_mtd, &instr);
65 if (ret) {
66 printf("erase failed %d\n", block);
67 break;
68 }
69 }
70
71 return 0;
72 }
73
74 if (strncmp(argv[1], "read", 4) == 0) {
75 ulong addr = simple_strtoul(argv[2], NULL, 16);
76 ulong ofs = simple_strtoul(argv[3], NULL, 16);
77 size_t len = simple_strtoul(argv[4], NULL, 16);
78 size_t retlen = 0;
79 int oob = strncmp(argv[1], "read.oob", 8) ? 0 : 1;
80
81 ofs -= (unsigned long)onenand_chip.base;
82
83 if (oob)
84 onenand_read_oob(&onenand_mtd, ofs, len,
85 &retlen, (u_char *) addr);
86 else
87 onenand_read(&onenand_mtd, ofs, len, &retlen,
88 (u_char *) addr);
89 printf("Done\n");
90
91 return 0;
92 }
93
94 if (strncmp(argv[1], "write", 5) == 0) {
95 ulong addr = simple_strtoul(argv[2], NULL, 16);
96 ulong ofs = simple_strtoul(argv[3], NULL, 16);
97 size_t len = simple_strtoul(argv[4], NULL, 16);
98 size_t retlen = 0;
99
100 ofs -= (unsigned long)onenand_chip.base;
101
102 onenand_write(&onenand_mtd, ofs, len, &retlen,
103 (u_char *) addr);
104 printf("Done\n");
105
106 return 0;
107 }
108
109 if (strncmp(argv[1], "block", 5) == 0) {
110 ulong addr = simple_strtoul(argv[2], NULL, 16);
111 ulong block = simple_strtoul(argv[3], NULL, 10);
112 ulong page = simple_strtoul(argv[4], NULL, 10);
113 size_t len = simple_strtol(argv[5], NULL, 10);
114 size_t retlen = 0;
115 ulong ofs;
116 int oob = strncmp(argv[1], "block.oob", 9) ? 0 : 1;
117
118 ofs = block << onenand_chip.erase_shift;
119 if (page)
120 ofs += page << onenand_chip.page_shift;
121
122 if (!len) {
123 if (oob)
124 len = 64;
125 else
126 len = 512;
127 }
128
129 if (oob)
130 onenand_read_oob(&onenand_mtd, ofs, len,
131 &retlen, (u_char *) addr);
132 else
133 onenand_read(&onenand_mtd, ofs, len, &retlen,
134 (u_char *) addr);
135 return 0;
136 }
137
138 break;
139 }
140
141 return 0;
142}
143
144U_BOOT_CMD(
145 onenand, 6, 1, do_onenand,
146 "onenand - OneNAND sub-system\n",
147 "info - show available OneNAND devices\n"
148 "onenand read[.oob] addr ofs len - read data at ofs with len to addr\n"
149 "onenand write addr ofs len - write data at ofs with len from addr\n"
150 "onenand erase saddr eaddr - erase block start addr to end addr\n"
151 "onenand block[.oob] addr block [page] [len] - "
152 "read data with (block [, page]) to addr"
153);
154
155#endif /* CONFIG_CMD_ONENAND */