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This adds a simple flash test to automatically verify erasing, writing, and reading of sectors. The code is based on existing Blackfin tests but generalized for everyone to use. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
108 lines
2.1 KiB
C
108 lines
2.1 KiB
C
/*
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* Parallel NOR Flash tests
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*
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* Copyright (c) 2005-2011 Analog Devices Inc.
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*
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* Licensed under the GPL-2 or later.
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*/
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#include <common.h>
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#include <malloc.h>
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#include <post.h>
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#include <flash.h>
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#if CONFIG_POST & CONFIG_SYS_POST_FLASH
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/*
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* This code will walk over the declared sectors erasing them,
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* then programming them, then verifying the written contents.
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* Possible future work:
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* - verify sectors before/after are not erased/written
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* - verify partial writes (e.g. programming only middle of sector)
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* - verify the contents of the erased sector
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* - better seed pattern than 0x00..0xff
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*/
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#ifndef CONFIG_SYS_POST_FLASH_NUM
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# define CONFIG_SYS_POST_FLASH_NUM 0
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#endif
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#if CONFIG_SYS_POST_FLASH_START >= CONFIG_SYS_POST_FLASH_END
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# error "invalid flash block start/end"
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#endif
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extern flash_info_t flash_info[];
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static void *seed_src_data(void *ptr, ulong *old_len, ulong new_len)
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{
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unsigned char *p;
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ulong i;
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p = ptr = realloc(ptr, new_len);
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if (!ptr)
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return ptr;
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for (i = *old_len; i < new_len; ++i)
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p[i] = i;
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*old_len = new_len;
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return ptr;
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}
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int flash_post_test(int flags)
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{
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ulong len;
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void *src;
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int ret, n, n_start, n_end;
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flash_info_t *info;
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/* the output from the common flash layers needs help */
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puts("\n");
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len = 0;
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src = NULL;
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info = &flash_info[CONFIG_SYS_POST_FLASH_NUM];
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n_start = CONFIG_SYS_POST_FLASH_START;
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n_end = CONFIG_SYS_POST_FLASH_END;
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for (n = n_start; n < n_end; ++n) {
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ulong s_start, s_len, s_off;
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s_start = info->start[n];
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s_len = flash_sector_size(info, n);
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s_off = s_start - info->start[0];
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src = seed_src_data(src, &len, s_len);
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if (!src) {
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printf("malloc(%#lx) failed\n", s_len);
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return 1;
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}
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printf("\tsector %i: %#lx +%#lx", n, s_start, s_len);
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ret = flash_erase(info, n, n + 1);
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if (ret) {
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flash_perror(ret);
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break;
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}
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ret = write_buff(info, src, s_start, s_len);
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if (ret) {
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flash_perror(ret);
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break;
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}
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ret = memcmp(src, (void *)s_start, s_len);
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if (ret) {
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printf(" verify failed with %i\n", ret);
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break;
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}
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}
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free(src);
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return ret;
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}
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#endif
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