1 /*
2 * Parallel NOR Flash tests
3 *
4 * Copyright (c) 2005-2011 Analog Devices Inc.
5 *
6 * Licensed under the GPL-2 or later.
7 */
8
9 #if CFG_POST & CFG_SYS_POST_FLASH
10 #include <common.h>
11 #include <malloc.h>
12 #include <post.h>
13 #include <flash.h>
14
15
16 /*
17 * This code will walk over the declared sectors erasing them,
18 * then programming them, then verifying the written contents.
19 * Possible future work:
20 * - verify sectors before/after are not erased/written
21 * - verify partial writes (e.g. programming only middle of sector)
22 * - verify the contents of the erased sector
23 * - better seed pattern than 0x00..0xff
24 */
25
26 #ifndef CFG_SYS_POST_FLASH_NUM
27 # define CFG_SYS_POST_FLASH_NUM 0
28 #endif
29 #if CFG_SYS_POST_FLASH_START >= CFG_SYS_POST_FLASH_END
30 # error "invalid flash block start/end"
31 #endif
32
seed_src_data(void * ptr,ulong * old_len,ulong new_len)33 static void *seed_src_data(void *ptr, ulong *old_len, ulong new_len)
34 {
35 unsigned char *p;
36 ulong i;
37
38 p = ptr = realloc(ptr, new_len);
39 if (!ptr)
40 return ptr;
41
42 for (i = *old_len; i < new_len; ++i)
43 p[i] = i;
44
45 *old_len = new_len;
46
47 return ptr;
48 }
49
flash_post_test(int flags)50 int flash_post_test(int flags)
51 {
52 ulong len;
53 void *src;
54 int ret, n, n_start, n_end;
55 flash_info_t *info;
56
57 /* the output from the common flash layers needs help */
58 puts("\n");
59
60 len = 0;
61 src = NULL;
62 info = &flash_info[CFG_SYS_POST_FLASH_NUM];
63 n_start = CFG_SYS_POST_FLASH_START;
64 n_end = CFG_SYS_POST_FLASH_END;
65
66 for (n = n_start; n < n_end; ++n) {
67 ulong s_start, s_len, s_off;
68
69 s_start = info->start[n];
70 s_len = flash_sector_size(info, n);
71 s_off = s_start - info->start[0];
72
73 src = seed_src_data(src, &len, s_len);
74 if (!src) {
75 printf("malloc(%#lx) failed\n", s_len);
76 return 1;
77 }
78
79 printf("\tsector %i: %#lx +%#lx", n, s_start, s_len);
80
81 ret = flash_erase(info, n, n + 1);
82 if (ret) {
83 flash_perror(ret);
84 break;
85 }
86
87 ret = write_buff(info, src, s_start, s_len);
88 if (ret) {
89 flash_perror(ret);
90 break;
91 }
92
93 ret = memcmp(src, (void *)s_start, s_len);
94 if (ret) {
95 printf(" verify failed with %i\n", ret);
96 break;
97 }
98 }
99
100 free(src);
101
102 return ret;
103 }
104
105 #endif
106