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/*
* memtest - Perform a memory test
*
* (C) Copyright 2013
* Alexander Aring <aar@pengutronix.de>, Pengutronix
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include <command.h>
#include <getopt.h>
#include <asm/mmu.h>
#include <memory.h>
#include <malloc.h>
#include <common.h>
#include <errno.h>
#include <memtest.h>
static int __do_memtest(struct list_head *memtest_regions,
int bus_only, uint32_t cache_flag)
{
struct mem_test_resource *r;
int ret;
list_for_each_entry(r, memtest_regions, list) {
printf("Testing memory space: "
"0x%08x -> 0x%08x:\n",
r->r->start, r->r->end);
remap_range((void *)r->r->start, r->r->end -
r->r->start + 1, cache_flag);
ret = mem_test(r->r->start, r->r->end, bus_only);
if (ret < 0)
return ret;
printf("done.\n\n");
}
return 0;
}
static int do_memtest(int argc, char *argv[])
{
int bus_only = 0, ret, opt;
uint32_t i, max_i = 1, pte_flags_cached, pte_flags_uncached;
struct list_head memtest_used_regions;
while ((opt = getopt(argc, argv, "i:b")) > 0) {
switch (opt) {
case 'i':
max_i = simple_strtoul(optarg, NULL, 0);
break;
case 'b':
bus_only = 1;
break;
default:
return COMMAND_ERROR_USAGE;
}
}
if (optind > argc)
return COMMAND_ERROR_USAGE;
/*
* Get pte flags for enable and disable cache support on page.
*/
pte_flags_cached = mmu_get_pte_cached_flags();
pte_flags_uncached = mmu_get_pte_uncached_flags();
INIT_LIST_HEAD(&memtest_used_regions);
ret = mem_test_request_regions(&memtest_used_regions);
if (ret < 0)
goto out;
for (i = 1; (i <= max_i) || !max_i; i++) {
if (max_i)
printf("Start iteration %u of %u.\n", i, max_i);
/*
* First try a memtest with caching enabled.
*/
if (IS_ENABLED(CONFIG_MMU)) {
printf("Do memtest with caching enabled.\n");
ret = __do_memtest(&memtest_used_regions,
bus_only, pte_flags_cached);
if (ret < 0)
goto out;
}
/*
* Second try a memtest with caching disabled.
*/
printf("Do memtest with caching disabled.\n");
ret = __do_memtest(&memtest_used_regions,
bus_only, pte_flags_uncached);
if (ret < 0)
goto out;
}
out:
mem_test_release_regions(&memtest_used_regions);
if (ret < 0) {
/*
* Set cursor to newline, because mem_test failed at
* drawing of progressbar.
*/
if (ret == -EINTR)
printf("\n");
printf("Memtest failed. Error: %d\n", ret);
return 1;
}
printf("Memtest successful.\n");
return 0;
}
BAREBOX_CMD_HELP_START(memtest)
BAREBOX_CMD_HELP_TEXT("Options:")
BAREBOX_CMD_HELP_OPT("-i ITERATIONS", "perform number of iterations (default 1, 0 is endless)")
BAREBOX_CMD_HELP_OPT("-b", "perform only a test on bus lines")
BAREBOX_CMD_HELP_END
BAREBOX_CMD_START(memtest)
.cmd = do_memtest,
BAREBOX_CMD_DESC("extensive memory test")
BAREBOX_CMD_OPTS("[-ib]")
BAREBOX_CMD_GROUP(CMD_GRP_MEM)
BAREBOX_CMD_HELP(cmd_memtest_help)
BAREBOX_CMD_END
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