2 * U-Boot command for OneNAND support
4 * Copyright (C) 2005-2007 Samsung Electronics
5 * Kyungmin Park <kyungmin.park@samsung.com>
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.
15 #ifdef CONFIG_CMD_ONENAND
17 #include <linux/mtd/compat.h>
18 #include <linux/mtd/mtd.h>
19 #include <linux/mtd/onenand.h>
23 extern struct mtd_info onenand_mtd
;
24 extern struct onenand_chip onenand_chip
;
26 int do_onenand(cmd_tbl_t
* cmdtp
, int flag
, int argc
, char *argv
[])
33 printf("Usage:\n%s\n", cmdtp
->usage
);
37 if (strncmp(argv
[1], "open", 4) == 0) {
41 onenand_print_device_info(onenand_chip
.device_id
, 1);
46 if (strncmp(argv
[1], "erase", 5) == 0) {
47 struct erase_info instr
= {
54 if (strncmp(argv
[2], "block", 5) == 0) {
55 start
= simple_strtoul(argv
[3], NULL
, 10);
56 endtail
= strchr(argv
[3], '-');
57 end
= simple_strtoul(endtail
+ 1, NULL
, 10);
59 start
= simple_strtoul(argv
[2], NULL
, 10);
60 end
= simple_strtoul(argv
[3], NULL
, 10);
61 start
-= (unsigned long)onenand_chip
.base
;
62 end
-= (unsigned long)onenand_chip
.base
;
64 start
>>= onenand_chip
.erase_shift
;
65 end
>>= onenand_chip
.erase_shift
;
66 /* Don't include the end block */
73 printf("Erase block from %d to %d\n", start
, end
);
75 for (block
= start
; block
<= end
; block
++) {
76 instr
.addr
= block
<< onenand_chip
.erase_shift
;
77 instr
.len
= 1 << onenand_chip
.erase_shift
;
78 ret
= onenand_erase(&onenand_mtd
, &instr
);
80 printf("erase failed %d\n", block
);
88 if (strncmp(argv
[1], "read", 4) == 0) {
89 ulong addr
= simple_strtoul(argv
[2], NULL
, 16);
90 ulong ofs
= simple_strtoul(argv
[3], NULL
, 16);
91 size_t len
= simple_strtoul(argv
[4], NULL
, 16);
93 int oob
= strncmp(argv
[1], "read.oob", 8) ? 0 : 1;
95 ofs
-= (unsigned long)onenand_chip
.base
;
98 onenand_read_oob(&onenand_mtd
, ofs
, len
,
99 &retlen
, (u_char
*) addr
);
101 onenand_read(&onenand_mtd
, ofs
, len
, &retlen
,
108 if (strncmp(argv
[1], "write", 5) == 0) {
109 ulong addr
= simple_strtoul(argv
[2], NULL
, 16);
110 ulong ofs
= simple_strtoul(argv
[3], NULL
, 16);
111 size_t len
= simple_strtoul(argv
[4], NULL
, 16);
114 ofs
-= (unsigned long)onenand_chip
.base
;
116 onenand_write(&onenand_mtd
, ofs
, len
, &retlen
,
123 if (strncmp(argv
[1], "block", 5) == 0) {
124 ulong addr
= simple_strtoul(argv
[2], NULL
, 16);
125 ulong block
= simple_strtoul(argv
[3], NULL
, 10);
126 ulong page
= simple_strtoul(argv
[4], NULL
, 10);
127 size_t len
= simple_strtol(argv
[5], NULL
, 10);
130 int oob
= strncmp(argv
[1], "block.oob", 9) ? 0 : 1;
132 ofs
= block
<< onenand_chip
.erase_shift
;
134 ofs
+= page
<< onenand_chip
.page_shift
;
144 onenand_read_oob(&onenand_mtd
, ofs
, len
,
145 &retlen
, (u_char
*) addr
);
147 onenand_read(&onenand_mtd
, ofs
, len
, &retlen
,
159 onenand
, 6, 1, do_onenand
,
160 "onenand - OneNAND sub-system\n",
161 "info - show available OneNAND devices\n"
162 "onenand read[.oob] addr ofs len - read data at ofs with len to addr\n"
163 "onenand write addr ofs len - write data at ofs with len from addr\n"
164 "onenand erase saddr eaddr - erase block start addr to end addr\n"
165 "onenand block[.oob] addr block [page] [len] - "
166 "read data with (block [, page]) to addr"
169 #endif /* CONFIG_CMD_ONENAND */