198 lines
4.4 KiB
C
198 lines
4.4 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_test_one_area(struct mem_test_resource *r, int bus_only,
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unsigned cache_flag)
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{
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int ret;
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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_bus_integrity(r->r->start, r->r->end);
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if (ret < 0)
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return ret;
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if (bus_only)
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return 0;
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ret = mem_test_moving_inversions(r->r->start, r->r->end);
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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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return 0;
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}
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static int do_memtest_thorough(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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ret = do_test_one_area(r, bus_only, cache_flag);
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if (ret)
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return ret;
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}
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return 0;
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}
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static int do_memtest_biggest(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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r = mem_test_biggest_region(memtest_regions);
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if (!r)
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return -EINVAL;
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return do_test_one_area(r, bus_only, cache_flag);
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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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int (*memtest)(struct list_head *, int, unsigned);
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int cached = 0, uncached = 0;
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memtest = do_memtest_biggest;
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while ((opt = getopt(argc, argv, "i:btcu")) > 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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case 't':
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memtest = do_memtest_thorough;
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break;
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case 'c':
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cached = 1;
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break;
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case 'u':
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uncached = 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 (!arch_can_remap() && (cached || uncached)) {
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printf("Cannot map cached or uncached\n");
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return -EINVAL;
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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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printf("Start iteration %u", i);
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if (max_i)
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printf(" of %u.\n", max_i);
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else
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putchar('\n');
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if (cached) {
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printf("Do memtest with caching enabled.\n");
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ret = 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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if (uncached) {
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printf("Do memtest with caching disabled.\n");
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ret = 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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}
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if (!cached && !uncached) {
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ret = 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_OPT("-c", "cached. Test using cached memory")
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BAREBOX_CMD_HELP_OPT("-u", "uncached. Test using uncached memory")
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BAREBOX_CMD_HELP_OPT("-t", "thorough. test all free areas. If unset, only test biggest free area")
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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("[-ibcut]")
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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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