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 #include <common.h> 10 #include <malloc.h> 11 #include <post.h> 12 #include <flash.h> 13 14 #if CONFIG_POST & CONFIG_SYS_POST_FLASH 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 CONFIG_SYS_POST_FLASH_NUM 27 # define CONFIG_SYS_POST_FLASH_NUM 0 28 #endif 29 #if CONFIG_SYS_POST_FLASH_START >= CONFIG_SYS_POST_FLASH_END 30 # error "invalid flash block start/end" 31 #endif 32 33 extern flash_info_t flash_info[]; 34 35 static void *seed_src_data(void *ptr, ulong *old_len, ulong new_len) 36 { 37 unsigned char *p; 38 ulong i; 39 40 p = ptr = realloc(ptr, new_len); 41 if (!ptr) 42 return ptr; 43 44 for (i = *old_len; i < new_len; ++i) 45 p[i] = i; 46 47 *old_len = new_len; 48 49 return ptr; 50 } 51 52 int flash_post_test(int flags) 53 { 54 ulong len; 55 void *src; 56 int ret, n, n_start, n_end; 57 flash_info_t *info; 58 59 /* the output from the common flash layers needs help */ 60 puts("\n"); 61 62 len = 0; 63 src = NULL; 64 info = &flash_info[CONFIG_SYS_POST_FLASH_NUM]; 65 n_start = CONFIG_SYS_POST_FLASH_START; 66 n_end = CONFIG_SYS_POST_FLASH_END; 67 68 for (n = n_start; n < n_end; ++n) { 69 ulong s_start, s_len, s_off; 70 71 s_start = info->start[n]; 72 s_len = flash_sector_size(info, n); 73 s_off = s_start - info->start[0]; 74 75 src = seed_src_data(src, &len, s_len); 76 if (!src) { 77 printf("malloc(%#lx) failed\n", s_len); 78 return 1; 79 } 80 81 printf("\tsector %i: %#lx +%#lx", n, s_start, s_len); 82 83 ret = flash_erase(info, n, n + 1); 84 if (ret) { 85 flash_perror(ret); 86 break; 87 } 88 89 ret = write_buff(info, src, s_start, s_len); 90 if (ret) { 91 flash_perror(ret); 92 break; 93 } 94 95 ret = memcmp(src, (void *)s_start, s_len); 96 if (ret) { 97 printf(" verify failed with %i\n", ret); 98 break; 99 } 100 } 101 102 free(src); 103 104 return ret; 105 } 106 107 #endif 108