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