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Diffstat (limited to 'commands/memtester/memtester.c')
| -rw-r--r-- | commands/memtester/memtester.c | 274 |
1 files changed, 274 insertions, 0 deletions
diff --git a/commands/memtester/memtester.c b/commands/memtester/memtester.c new file mode 100644 index 0000000000..8b64d32329 --- /dev/null +++ b/commands/memtester/memtester.c @@ -0,0 +1,274 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * memtester version 4 + * + * Very simple but very effective user-space memory tester. + * Originally by Simon Kirby <sim@stormix.com> <sim@neato.org> + * Version 2 by Charles Cazabon <charlesc-memtester@pyropus.ca> + * Version 3 not publicly released. + * Version 4 rewrite: + * Copyright (C) 2004-2012 Charles Cazabon <charlesc-memtester@pyropus.ca> + * + */ + +#define __version__ "4.3.0" + +#include <stdlib.h> +#include <stdio.h> +#include <types.h> +#include <sys/stat.h> +#include <unistd.h> +#include <fcntl.h> +#include <string.h> +#include <errno.h> +#include <getopt.h> +#include <common.h> +#include <command.h> +#include <environment.h> +#include <fs.h> + +#include "types.h" +#include "sizes.h" +#include "tests.h" + +#define EXIT_FAIL_NONSTARTER COMMAND_ERROR +#define EXIT_FAIL_ADDRESSLINES 0x02 +#define EXIT_FAIL_OTHERTEST 0x04 + +static struct test tests[] = { + { "Random Value", test_random_value }, + { "Compare XOR", test_xor_comparison }, + { "Compare SUB", test_sub_comparison }, + { "Compare MUL", test_mul_comparison }, + { "Compare DIV",test_div_comparison }, + { "Compare OR", test_or_comparison }, + { "Compare AND", test_and_comparison }, + { "Sequential Increment", test_seqinc_comparison }, + { "Solid Bits", test_solidbits_comparison }, + { "Block Sequential", test_blockseq_comparison }, + { "Checkerboard", test_checkerboard_comparison }, + { "Bit Spread", test_bitspread_comparison }, + { "Bit Flip", test_bitflip_comparison }, + { "Walking Ones", test_walkbits1_comparison }, + { "Walking Zeroes", test_walkbits0_comparison }, + { "8-bit Writes", test_8bit_wide_random }, + { "16-bit Writes", test_16bit_wide_random }, + { NULL, NULL } +}; + +/* Function declarations */ + +/* Global vars - so tests have access to this information */ +int memtester_use_phys; +off_t memtester_physaddrbase; + +static int do_memtester(int argc, char **argv) { + ul loops, loop, i; + size_t wantmb, wantbytes, bufsize, + halflen, count; + void *buf, *aligned; + ulv *bufa, *bufb; + int exit_code = 0, ret; + int memfd = 0, opt; + size_t maxbytes = -1; /* addressable memory, in bytes */ + size_t maxmb = (maxbytes >> 20) + 1; /* addressable memory, in MB */ + /* Device to mmap memory from with -p, default is normal core */ + char *device_name = "/dev/mem"; + struct stat statbuf; + int device_specified = 0; + ul testmask = 0; + + memtester_use_phys = 0; + memtester_physaddrbase = 0; + + printf("memtester version " __version__ " (%d-bit)\n", UL_LEN); + printf("Copyright (C) 2001-2012 Charles Cazabon.\n"); + printf("Licensed under the GNU General Public License version 2 (only).\n"); + printf("\n"); + + while ((opt = getopt(argc, argv, "p:d:m:")) != -1) { + ull t; + + switch (opt) { + case 'm': + if (kstrtoul(optarg, 0, &testmask)) { + printf("error parsing MEMTESTER_TEST_MASK %s: %s\n", + optarg, strerror(errno)); + return COMMAND_ERROR_USAGE; + } + printf("using testmask 0x%lx\n", testmask); + break; + case 'p': + if (kstrtoull(optarg, 0, &t)) { + printf("failed to parse physaddrbase arg; should be hex " + "address (0x123...)\n"); + return COMMAND_ERROR_USAGE; + } + memtester_physaddrbase = (off_t)t; + memtester_use_phys = 1; + break; + case 'd': + if (stat(optarg,&statbuf)) { + printf("can not use %s as device: %s\n", optarg, + strerror(errno)); + return COMMAND_ERROR_USAGE; + } else { + if (!S_ISCHR(statbuf.st_mode)) { + printf("can not mmap non-char device %s\n", + optarg); + return COMMAND_ERROR_USAGE; + } else { + device_name = optarg; + device_specified = 1; + } + } + break; + default: /* '?' */ + return COMMAND_ERROR_USAGE; + } + } + if (device_specified && !memtester_use_phys) { + printf("for mem device, physaddrbase (-p) must be specified\n"); + return COMMAND_ERROR_USAGE; + } + + if (optind >= argc) { + printf("need memory argument, in MB\n"); + return COMMAND_ERROR_USAGE; + } + + wantbytes = (size_t) strtoull_suffix(argv[optind], 0, 0); + if (wantbytes < 2 * sizeof(ul)) { + printf("need at least %ldB of memory to test\n", 2 * sizeof(ul)); + return COMMAND_ERROR_USAGE; + } + wantmb = (wantbytes >> 20); + optind++; + if (wantmb > maxmb) { + printf("This system can only address %llu MB.\n", (ull) maxmb); + return EXIT_FAIL_NONSTARTER; + } + + if (optind >= argc) { + loops = 0; + } else { + if (kstrtoul(argv[optind], 0, &loops)) { + printf("failed to parse number of loops"); + return COMMAND_ERROR_USAGE; + } + } + + printf("want %lluMB (%llu bytes)\n", (ull) wantmb, (ull) wantbytes); + buf = NULL; + + if (memtester_use_phys) { + memfd = open(device_name, O_RDWR); + if (memfd == -1) { + printf("failed to open %s for physical memory: %s\n", + device_name, strerror(errno)); + return EXIT_FAIL_NONSTARTER; + } + buf = memmap(memfd, PROT_READ | PROT_WRITE) + memtester_physaddrbase; + if (buf == MAP_FAILED) { + printf("failed to mmap %s for physical memory: %s\n", + device_name, strerror(errno)); + close(memfd); + return EXIT_FAIL_NONSTARTER; + } + + bufsize = wantbytes; /* accept no less */ + } else { + buf = malloc(wantbytes); + if (!buf) + return -ENOMEM; + + printf("got %lluMB (%llu bytes)\n", (ull) wantbytes >> 20, + (ull) wantbytes); + } + bufsize = wantbytes; + aligned = buf; + + printf("buffer @ 0x%p\n", buf); + + halflen = bufsize / 2; + count = halflen / sizeof(ul); + bufa = (ulv *) aligned; + bufb = (ulv *) ((size_t) aligned + halflen); + + for(loop=1; ((!loops) || loop <= loops); loop++) { + printf("Loop %lu", loop); + if (loops) { + printf("/%lu", loops); + } + printf(":\n"); + printf(" %-20s: ", "Stuck Address"); + ret = test_stuck_address(aligned, bufsize / sizeof(ul)); + if (!ret) { + printf("ok\n"); + } else if (ret == -EINTR) { + goto out; + } else { + exit_code |= EXIT_FAIL_ADDRESSLINES; + } + for (i=0;;i++) { + if (!tests[i].name) break; + /* If using a custom testmask, only run this test if the + bit corresponding to this test was set by the user. + */ + if (testmask && (!((1 << i) & testmask))) { + continue; + } + printf(" %-20s: ", tests[i].name); + ret = tests[i].fp(bufa, bufb, count); + if (!ret) { + printf("ok\n"); + } else if (ret == -EINTR) { + goto out; + } else { + exit_code |= EXIT_FAIL_OTHERTEST; + } + } + printf("\n"); + } +out: + if (memtester_use_phys) + close(memfd); + else + free(buf); + printf("Done.\n"); + if (!exit_code) + return 0; + printf("%s FAILED: 0x%x\n", argv[0], exit_code); + return COMMAND_ERROR; +} + +BAREBOX_CMD_HELP_START(memtester) +BAREBOX_CMD_HELP_TEXT("Options:") +BAREBOX_CMD_HELP_TEXT("-p PHYSADDR") +BAREBOX_CMD_HELP_TEXT(" tells memtester to test a specific region of memory starting at physical") +BAREBOX_CMD_HELP_TEXT(" address PHYSADDR (given in hex), by mmaping a device specified by the -d") +BAREBOX_CMD_HELP_TEXT(" option (below, or /dev/mem by default).") +BAREBOX_CMD_HELP_TEXT("") +BAREBOX_CMD_HELP_TEXT("-d DEVICE") +BAREBOX_CMD_HELP_TEXT(" a device to mmap") +BAREBOX_CMD_HELP_TEXT("") +BAREBOX_CMD_HELP_TEXT("") +BAREBOX_CMD_HELP_TEXT("-m TESTMASK") +BAREBOX_CMD_HELP_TEXT(" bitmask to select desired tests") +BAREBOX_CMD_HELP_TEXT("") +BAREBOX_CMD_HELP_TEXT("MEMORY ") +BAREBOX_CMD_HELP_TEXT(" the amount of memory to allocate and test in bytes. You") +BAREBOX_CMD_HELP_TEXT(" can include a suffix of K, M, or G to indicate kilobytes, ") +BAREBOX_CMD_HELP_TEXT(" megabytes, or gigabytes respectively.") +BAREBOX_CMD_HELP_TEXT("") +BAREBOX_CMD_HELP_TEXT("ITERATIONS") +BAREBOX_CMD_HELP_TEXT(" (optional) number of loops to iterate through. Default is infinite.") +BAREBOX_CMD_HELP_END + +BAREBOX_CMD_START(memtester) + .cmd = do_memtester, + BAREBOX_CMD_DESC("memory stress-testing") + BAREBOX_CMD_OPTS("[-p PHYSADDR [-d DEVICE]] [-m TESTMASK] <MEMORY>[k|M|G] [ITERATIONS]") + BAREBOX_CMD_GROUP(CMD_GRP_MEM) + BAREBOX_CMD_HELP(cmd_memtester_help) +BAREBOX_CMD_END |