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