Memtester is an utility for testing the memory subsystem for faults. For hardware developers, memtester can be told to test memory starting at a particular physical address. This port is based on the sources from Debian GNU/Linux. Debian package meta data is as follows: Package: memtester Version: 4.3.0-5 Homepage: http://pyropus.ca/software/memtester/ APT-Sources: http://ftp.ru.debian.org/debian testing/main amd64 Packages Dissected version of this patch can be found at https://github.com/pmamonov/barebox/commits/memtester Changes since v2: 6fe3d86f9b add prefix to global variables names 81441f8ff8 drop `volatile` for buf/aligned pointers 336d1ddf5f close memfd if mmap() failed 4b52d3990d define rand32() as random32() 9fa593f130 tests: make global vars static ce00f1aadb fix error handling when parsing arguments 5107cc4b19 don't flush the console Changes since v1: 1acbafe7a2 init global vars on start 7664692fd4 use proper return value a10eba5b49 use strtoull_suffix() to parse memory size 001b623c16 add option to set TESTMASK 3acfe07d56 make tests[] static 528360ebd7 fix license Signed-off-by: Peter Mamonov <pmamonov@xxxxxxxxx> --- commands/Kconfig | 8 + commands/Makefile | 1 + commands/memtester/Makefile | 1 + commands/memtester/memtester.c | 275 ++++++++++++++++++ commands/memtester/memtester.h | 21 ++ commands/memtester/sizes.h | 37 +++ commands/memtester/tests.c | 495 +++++++++++++++++++++++++++++++++ commands/memtester/tests.h | 36 +++ commands/memtester/types.h | 35 +++ 9 files changed, 909 insertions(+) create mode 100644 commands/memtester/Makefile create mode 100644 commands/memtester/memtester.c create mode 100644 commands/memtester/memtester.h create mode 100644 commands/memtester/sizes.h create mode 100644 commands/memtester/tests.c create mode 100644 commands/memtester/tests.h create mode 100644 commands/memtester/types.h diff --git a/commands/Kconfig b/commands/Kconfig index df18715f20..960d3608c7 100644 --- a/commands/Kconfig +++ b/commands/Kconfig @@ -1611,6 +1611,14 @@ config CMD_MEMTEST -i ITERATIONS perform number of iterations (default 1, 0 is endless) -b perform only a test on bus lines +config CMD_MEMTESTER + tristate + prompt "memtester" + help + Utility for testing the memory subsystem. + + Homepage: http://pyropus.ca/software/memtester/ + config CMD_MM tristate select DEV_MEM diff --git a/commands/Makefile b/commands/Makefile index 6cc4997cc5..dc285cd00e 100644 --- a/commands/Makefile +++ b/commands/Makefile @@ -49,6 +49,7 @@ obj-$(CONFIG_CMD_LOADENV) += loadenv.o obj-$(CONFIG_CMD_NAND) += nand.o obj-$(CONFIG_CMD_NANDTEST) += nandtest.o obj-$(CONFIG_CMD_MEMTEST) += memtest.o +obj-$(CONFIG_CMD_MEMTESTER) += memtester/ obj-$(CONFIG_CMD_TRUE) += true.o obj-$(CONFIG_CMD_FALSE) += false.o obj-$(CONFIG_CMD_VERSION) += version.o diff --git a/commands/memtester/Makefile b/commands/memtester/Makefile new file mode 100644 index 0000000000..17a2429276 --- /dev/null +++ b/commands/memtester/Makefile @@ -0,0 +1 @@ +obj-y += tests.o memtester.o diff --git a/commands/memtester/memtester.c b/commands/memtester/memtester.c new file mode 100644 index 0000000000..f3980eaea6 --- /dev/null +++ b/commands/memtester/memtester.c @@ -0,0 +1,275 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * memtester version 4 + * + * Very simple but very effective user-space memory tester. + * Originally by Simon Kirby <sim@xxxxxxxxxxx> <sim@xxxxxxxxx> + * Version 2 by Charles Cazabon <charlesc-memtester@xxxxxxxxxx> + * Version 3 not publicly released. + * Version 4 rewrite: + * Copyright (C) 2004-2012 Charles Cazabon <charlesc-memtester@xxxxxxxxxx> + * + */ + +#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) { + printf("malloc failed\n"); + 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((void *)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 diff --git a/commands/memtester/memtester.h b/commands/memtester/memtester.h new file mode 100644 index 0000000000..a683cd9d65 --- /dev/null +++ b/commands/memtester/memtester.h @@ -0,0 +1,21 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Very simple (yet, for some reason, very effective) memory tester. + * Originally by Simon Kirby <sim@xxxxxxxxxxx> <sim@xxxxxxxxx> + * Version 2 by Charles Cazabon <charlesc-memtester@xxxxxxxxxx> + * Version 3 not publicly released. + * Version 4 rewrite: + * Copyright (C) 2004-2012 Charles Cazabon <charlesc-memtester@xxxxxxxxxx> + * + * This file contains the declarations for external variables from the main file. + * See other comments in that file. + * + */ + +#include <types.h> + +/* extern declarations. */ + +extern int memtester_use_phys; +extern off_t memtester_physaddrbase; + diff --git a/commands/memtester/sizes.h b/commands/memtester/sizes.h new file mode 100644 index 0000000000..bbee8fab7f --- /dev/null +++ b/commands/memtester/sizes.h @@ -0,0 +1,37 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Very simple but very effective user-space memory tester. + * Originally by Simon Kirby <sim@xxxxxxxxxxx> <sim@xxxxxxxxx> + * Version 2 by Charles Cazabon <charlesc-memtester@xxxxxxxxxx> + * Version 3 not publicly released. + * Version 4 rewrite: + * Copyright (C) 2004-2012 Charles Cazabon <charlesc-memtester@xxxxxxxxxx> + * + * This file contains some macro definitions for handling 32/64 bit platforms. + * + */ + +#include <linux/limits.h> + +#define rand32() random32() + +#if defined(CONFIG_32BIT) + #define rand_ul() rand32() + #define UL_ONEBITS 0xffffffff + #define UL_LEN 32 + #define CHECKERBOARD1 0x55555555 + #define CHECKERBOARD2 0xaaaaaaaa + #define UL_BYTE(x) ((x | x << 8 | x << 16 | x << 24)) +#elif defined(CONFIG_64BIT) + #define rand64() (((ul) rand32()) << 32 | ((ul) rand32())) + #define rand_ul() rand64() + #define UL_ONEBITS 0xffffffffffffffffUL + #define UL_LEN 64 + #define CHECKERBOARD1 0x5555555555555555 + #define CHECKERBOARD2 0xaaaaaaaaaaaaaaaa + #define UL_BYTE(x) (((ul)x | (ul)x<<8 | (ul)x<<16 | (ul)x<<24 | (ul)x<<32 | (ul)x<<40 | (ul)x<<48 | (ul)x<<56)) +#else + #error long on this platform is not 32 or 64 bits +#endif + + diff --git a/commands/memtester/tests.c b/commands/memtester/tests.c new file mode 100644 index 0000000000..711177007f --- /dev/null +++ b/commands/memtester/tests.c @@ -0,0 +1,495 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Very simple but very effective user-space memory tester. + * Originally by Simon Kirby <sim@xxxxxxxxxxx> <sim@xxxxxxxxx> + * Version 2 by Charles Cazabon <charlesc-memtester@xxxxxxxxxx> + * Version 3 not publicly released. + * Version 4 rewrite: + * Copyright (C) 2004-2012 Charles Cazabon <charlesc-memtester@xxxxxxxxxx> + * + * This file contains the functions for the actual tests, called from the + * main routine in memtester.c. See other comments in that file. + * + */ + +#include <common.h> +#include <types.h> +#include <stdio.h> +#include <stdlib.h> +#include <linux/limits.h> + +#include "types.h" +#include "sizes.h" +#include "memtester.h" +#include "tests.h" + +static char progress[] = "-\\|/"; +#define PROGRESSLEN 4 +#define PROGRESSOFTEN 2500 +#define ONE 0x00000001L + +static mword8_t mword8; +static mword16_t mword16; + +/* Function definitions. */ + +static int compare_regions(ulv *bufa, ulv *bufb, size_t count) { + int r = 0; + size_t i; + ulv *p1 = bufa; + ulv *p2 = bufb; + off_t physaddr; + + if (ctrlc()) + return -EINTR; + + for (i = 0; i < count; i++, p1++, p2++) { + if (*p1 != *p2) { + if (memtester_use_phys) { + physaddr = memtester_physaddrbase + (i * sizeof(ul)); + printf("FAILURE: 0x%08lx != 0x%08lx at physical address " + "0x%08lx.\n", + (ul) *p1, (ul) *p2, physaddr); + } else { + printf("FAILURE: 0x%08lx != 0x%08lx at offset 0x%08lx.\n", + (ul) *p1, (ul) *p2, (ul) (i * sizeof(ul))); + } + /* printf("Skipping to next test..."); */ + r = -1; + } + } + return r; +} + +int test_stuck_address(ulv *bufa, size_t count) { + ulv *p1 = bufa; + unsigned int j; + size_t i; + off_t physaddr; + + printf(" "); + for (j = 0; j < 16; j++) { + if (ctrlc()) + return -EINTR; + printf("\b\b\b\b\b\b\b\b\b\b\b"); + p1 = (ulv *) bufa; + printf("setting %3u", j); + for (i = 0; i < count; i++) { + *p1 = ((j + i) % 2) == 0 ? (ul) p1 : ~((ul) p1); + *p1++; + } + printf("\b\b\b\b\b\b\b\b\b\b\b"); + printf("testing %3u", j); + p1 = (ulv *) bufa; + for (i = 0; i < count; i++, p1++) { + if (*p1 != (((j + i) % 2) == 0 ? (ul) p1 : ~((ul) p1))) { + if (memtester_use_phys) { + physaddr = memtester_physaddrbase + (i * sizeof(ul)); + printf("FAILURE: possible bad address line at physical " + "address 0x%08lx.\n", + physaddr); + } else { + printf("FAILURE: possible bad address line at offset " + "0x%08lx.\n", + (ul) (i * sizeof(ul))); + } + printf("Skipping to next test...\n"); + return -1; + } + } + } + printf("\b\b\b\b\b\b\b\b\b\b\b \b\b\b\b\b\b\b\b\b\b\b"); + return 0; +} + +int test_random_value(ulv *bufa, ulv *bufb, size_t count) { + ulv *p1 = bufa; + ulv *p2 = bufb; + ul j = 0; + size_t i; + + putchar(' '); + for (i = 0; i < count; i++) { + *p1++ = *p2++ = rand_ul(); + if (!(i % PROGRESSOFTEN)) { + putchar('\b'); + putchar(progress[++j % PROGRESSLEN]); + } + } + printf("\b \b"); + return compare_regions(bufa, bufb, count); +} + +int test_xor_comparison(ulv *bufa, ulv *bufb, size_t count) { + ulv *p1 = bufa; + ulv *p2 = bufb; + size_t i; + ul q = rand_ul(); + + for (i = 0; i < count; i++) { + *p1++ ^= q; + *p2++ ^= q; + } + return compare_regions(bufa, bufb, count); +} + +int test_sub_comparison(ulv *bufa, ulv *bufb, size_t count) { + ulv *p1 = bufa; + ulv *p2 = bufb; + size_t i; + ul q = rand_ul(); + + for (i = 0; i < count; i++) { + *p1++ -= q; + *p2++ -= q; + } + return compare_regions(bufa, bufb, count); +} + +int test_mul_comparison(ulv *bufa, ulv *bufb, size_t count) { + ulv *p1 = bufa; + ulv *p2 = bufb; + size_t i; + ul q = rand_ul(); + + for (i = 0; i < count; i++) { + *p1++ *= q; + *p2++ *= q; + } + return compare_regions(bufa, bufb, count); +} + +int test_div_comparison(ulv *bufa, ulv *bufb, size_t count) { + ulv *p1 = bufa; + ulv *p2 = bufb; + size_t i; + ul q = rand_ul(); + + for (i = 0; i < count; i++) { + if (!q) { + q++; + } + *p1++ /= q; + *p2++ /= q; + } + return compare_regions(bufa, bufb, count); +} + +int test_or_comparison(ulv *bufa, ulv *bufb, size_t count) { + ulv *p1 = bufa; + ulv *p2 = bufb; + size_t i; + ul q = rand_ul(); + + for (i = 0; i < count; i++) { + *p1++ |= q; + *p2++ |= q; + } + return compare_regions(bufa, bufb, count); +} + +int test_and_comparison(ulv *bufa, ulv *bufb, size_t count) { + ulv *p1 = bufa; + ulv *p2 = bufb; + size_t i; + ul q = rand_ul(); + + for (i = 0; i < count; i++) { + *p1++ &= q; + *p2++ &= q; + } + return compare_regions(bufa, bufb, count); +} + +int test_seqinc_comparison(ulv *bufa, ulv *bufb, size_t count) { + ulv *p1 = bufa; + ulv *p2 = bufb; + size_t i; + ul q = rand_ul(); + + for (i = 0; i < count; i++) { + *p1++ = *p2++ = (i + q); + } + return compare_regions(bufa, bufb, count); +} + +int test_solidbits_comparison(ulv *bufa, ulv *bufb, size_t count) { + ulv *p1 = bufa; + ulv *p2 = bufb; + unsigned int j; + ul q; + size_t i; + int ret; + + printf(" "); + for (j = 0; j < 64; j++) { + printf("\b\b\b\b\b\b\b\b\b\b\b"); + q = (j % 2) == 0 ? UL_ONEBITS : 0; + printf("setting %3u", j); + p1 = (ulv *) bufa; + p2 = (ulv *) bufb; + for (i = 0; i < count; i++) { + *p1++ = *p2++ = (i % 2) == 0 ? q : ~q; + } + printf("\b\b\b\b\b\b\b\b\b\b\b"); + printf("testing %3u", j); + ret = compare_regions(bufa, bufb, count); + if (ret) + return ret; + } + printf("\b\b\b\b\b\b\b\b\b\b\b \b\b\b\b\b\b\b\b\b\b\b"); + return 0; +} + +int test_checkerboard_comparison(ulv *bufa, ulv *bufb, size_t count) { + ulv *p1 = bufa; + ulv *p2 = bufb; + unsigned int j; + ul q; + size_t i; + int ret; + + printf(" "); + for (j = 0; j < 64; j++) { + printf("\b\b\b\b\b\b\b\b\b\b\b"); + q = (j % 2) == 0 ? CHECKERBOARD1 : CHECKERBOARD2; + printf("setting %3u", j); + p1 = (ulv *) bufa; + p2 = (ulv *) bufb; + for (i = 0; i < count; i++) { + *p1++ = *p2++ = (i % 2) == 0 ? q : ~q; + } + printf("\b\b\b\b\b\b\b\b\b\b\b"); + printf("testing %3u", j); + ret = compare_regions(bufa, bufb, count); + if (ret) + return ret; + } + printf("\b\b\b\b\b\b\b\b\b\b\b \b\b\b\b\b\b\b\b\b\b\b"); + return 0; +} + +int test_blockseq_comparison(ulv *bufa, ulv *bufb, size_t count) { + ulv *p1 = bufa; + ulv *p2 = bufb; + unsigned int j; + size_t i; + int ret; + + printf(" "); + for (j = 0; j < 256; j++) { + printf("\b\b\b\b\b\b\b\b\b\b\b"); + p1 = (ulv *) bufa; + p2 = (ulv *) bufb; + printf("setting %3u", j); + for (i = 0; i < count; i++) { + *p1++ = *p2++ = (ul) UL_BYTE(j); + } + printf("\b\b\b\b\b\b\b\b\b\b\b"); + printf("testing %3u", j); + ret = compare_regions(bufa, bufb, count); + if (ret) + return ret; + } + printf("\b\b\b\b\b\b\b\b\b\b\b \b\b\b\b\b\b\b\b\b\b\b"); + return 0; +} + +int test_walkbits0_comparison(ulv *bufa, ulv *bufb, size_t count) { + ulv *p1 = bufa; + ulv *p2 = bufb; + unsigned int j; + size_t i; + int ret; + + printf(" "); + for (j = 0; j < UL_LEN * 2; j++) { + printf("\b\b\b\b\b\b\b\b\b\b\b"); + p1 = (ulv *) bufa; + p2 = (ulv *) bufb; + printf("setting %3u", j); + for (i = 0; i < count; i++) { + if (j < UL_LEN) { /* Walk it up. */ + *p1++ = *p2++ = ONE << j; + } else { /* Walk it back down. */ + *p1++ = *p2++ = ONE << (UL_LEN * 2 - j - 1); + } + } + printf("\b\b\b\b\b\b\b\b\b\b\b"); + printf("testing %3u", j); + ret = compare_regions(bufa, bufb, count); + if (ret) + return ret; + } + printf("\b\b\b\b\b\b\b\b\b\b\b \b\b\b\b\b\b\b\b\b\b\b"); + return 0; +} + +int test_walkbits1_comparison(ulv *bufa, ulv *bufb, size_t count) { + ulv *p1 = bufa; + ulv *p2 = bufb; + unsigned int j; + size_t i; + int ret; + + printf(" "); + for (j = 0; j < UL_LEN * 2; j++) { + printf("\b\b\b\b\b\b\b\b\b\b\b"); + p1 = (ulv *) bufa; + p2 = (ulv *) bufb; + printf("setting %3u", j); + for (i = 0; i < count; i++) { + if (j < UL_LEN) { /* Walk it up. */ + *p1++ = *p2++ = UL_ONEBITS ^ (ONE << j); + } else { /* Walk it back down. */ + *p1++ = *p2++ = UL_ONEBITS ^ (ONE << (UL_LEN * 2 - j - 1)); + } + } + printf("\b\b\b\b\b\b\b\b\b\b\b"); + printf("testing %3u", j); + ret = compare_regions(bufa, bufb, count); + if (ret) + return ret; + } + printf("\b\b\b\b\b\b\b\b\b\b\b \b\b\b\b\b\b\b\b\b\b\b"); + return 0; +} + +int test_bitspread_comparison(ulv *bufa, ulv *bufb, size_t count) { + ulv *p1 = bufa; + ulv *p2 = bufb; + unsigned int j; + size_t i; + int ret; + + printf(" "); + for (j = 0; j < UL_LEN * 2; j++) { + printf("\b\b\b\b\b\b\b\b\b\b\b"); + p1 = (ulv *) bufa; + p2 = (ulv *) bufb; + printf("setting %3u", j); + for (i = 0; i < count; i++) { + if (j < UL_LEN) { /* Walk it up. */ + *p1++ = *p2++ = (i % 2 == 0) + ? (ONE << j) | (ONE << (j + 2)) + : UL_ONEBITS ^ ((ONE << j) + | (ONE << (j + 2))); + } else { /* Walk it back down. */ + *p1++ = *p2++ = (i % 2 == 0) + ? (ONE << (UL_LEN * 2 - 1 - j)) | (ONE << (UL_LEN * 2 + 1 - j)) + : UL_ONEBITS ^ (ONE << (UL_LEN * 2 - 1 - j) + | (ONE << (UL_LEN * 2 + 1 - j))); + } + } + printf("\b\b\b\b\b\b\b\b\b\b\b"); + printf("testing %3u", j); + ret = compare_regions(bufa, bufb, count); + if (ret) + return ret; + } + printf("\b\b\b\b\b\b\b\b\b\b\b \b\b\b\b\b\b\b\b\b\b\b"); + return 0; +} + +int test_bitflip_comparison(ulv *bufa, ulv *bufb, size_t count) { + ulv *p1 = bufa; + ulv *p2 = bufb; + unsigned int j, k; + ul q; + size_t i; + int ret; + + printf(" "); + for (k = 0; k < UL_LEN; k++) { + q = ONE << k; + for (j = 0; j < 8; j++) { + printf("\b\b\b\b\b\b\b\b\b\b\b"); + q = ~q; + printf("setting %3u", k * 8 + j); + p1 = (ulv *) bufa; + p2 = (ulv *) bufb; + for (i = 0; i < count; i++) { + *p1++ = *p2++ = (i % 2) == 0 ? q : ~q; + } + printf("\b\b\b\b\b\b\b\b\b\b\b"); + printf("testing %3u", k * 8 + j); + ret = compare_regions(bufa, bufb, count); + if (ret) + return -1; + } + } + printf("\b\b\b\b\b\b\b\b\b\b\b \b\b\b\b\b\b\b\b\b\b\b"); + return 0; +} + +int test_8bit_wide_random(ulv* bufa, ulv* bufb, size_t count) { + u8v *p1, *t; + ulv *p2; + int attempt; + unsigned int b, j = 0; + size_t i; + int ret; + + putchar(' '); + for (attempt = 0; attempt < 2; attempt++) { + if (attempt & 1) { + p1 = (u8v *) bufa; + p2 = bufb; + } else { + p1 = (u8v *) bufb; + p2 = bufa; + } + for (i = 0; i < count; i++) { + t = mword8.bytes; + *p2++ = mword8.val = rand_ul(); + for (b=0; b < UL_LEN/8; b++) { + *p1++ = *t++; + } + if (!(i % PROGRESSOFTEN)) { + putchar('\b'); + putchar(progress[++j % PROGRESSLEN]); + } + } + ret = compare_regions(bufa, bufb, count); + if (ret) + return ret; + } + printf("\b \b"); + return 0; +} + +int test_16bit_wide_random(ulv* bufa, ulv* bufb, size_t count) { + u16v *p1, *t; + ulv *p2; + int attempt; + unsigned int b, j = 0; + size_t i; + int ret; + + putchar( ' ' ); + for (attempt = 0; attempt < 2; attempt++) { + if (attempt & 1) { + p1 = (u16v *) bufa; + p2 = bufb; + } else { + p1 = (u16v *) bufb; + p2 = bufa; + } + for (i = 0; i < count; i++) { + t = mword16.u16s; + *p2++ = mword16.val = rand_ul(); + for (b = 0; b < UL_LEN/16; b++) { + *p1++ = *t++; + } + if (!(i % PROGRESSOFTEN)) { + putchar('\b'); + putchar(progress[++j % PROGRESSLEN]); + } + } + ret = compare_regions(bufa, bufb, count); + if (ret) + return ret; + } + printf("\b \b"); + return 0; +} diff --git a/commands/memtester/tests.h b/commands/memtester/tests.h new file mode 100644 index 0000000000..86ef72509c --- /dev/null +++ b/commands/memtester/tests.h @@ -0,0 +1,36 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Very simple yet very effective memory tester. + * Originally by Simon Kirby <sim@xxxxxxxxxxx> <sim@xxxxxxxxx> + * Version 2 by Charles Cazabon <charlesc-memtester@xxxxxxxxxx> + * Version 3 not publicly released. + * Version 4 rewrite: + * Copyright (C) 2004-2012 Charles Cazabon <charlesc-memtester@xxxxxxxxxx> + * + * This file contains the declarations for the functions for the actual tests, + * called from the main routine in memtester.c. See other comments in that + * file. + * + */ + +/* Function declaration. */ + +int test_stuck_address(unsigned long volatile *bufa, size_t count); +int test_random_value(unsigned long volatile *bufa, unsigned long volatile *bufb, size_t count); +int test_xor_comparison(unsigned long volatile *bufa, unsigned long volatile *bufb, size_t count); +int test_sub_comparison(unsigned long volatile *bufa, unsigned long volatile *bufb, size_t count); +int test_mul_comparison(unsigned long volatile *bufa, unsigned long volatile *bufb, size_t count); +int test_div_comparison(unsigned long volatile *bufa, unsigned long volatile *bufb, size_t count); +int test_or_comparison(unsigned long volatile *bufa, unsigned long volatile *bufb, size_t count); +int test_and_comparison(unsigned long volatile *bufa, unsigned long volatile *bufb, size_t count); +int test_seqinc_comparison(unsigned long volatile *bufa, unsigned long volatile *bufb, size_t count); +int test_solidbits_comparison(unsigned long volatile *bufa, unsigned long volatile *bufb, size_t count); +int test_checkerboard_comparison(unsigned long volatile *bufa, unsigned long volatile *bufb, size_t count); +int test_blockseq_comparison(unsigned long volatile *bufa, unsigned long volatile *bufb, size_t count); +int test_walkbits0_comparison(unsigned long volatile *bufa, unsigned long volatile *bufb, size_t count); +int test_walkbits1_comparison(unsigned long volatile *bufa, unsigned long volatile *bufb, size_t count); +int test_bitspread_comparison(unsigned long volatile *bufa, unsigned long volatile *bufb, size_t count); +int test_bitflip_comparison(unsigned long volatile *bufa, unsigned long volatile *bufb, size_t count); +int test_8bit_wide_random(unsigned long volatile *bufa, unsigned long volatile *bufb, size_t count); +int test_16bit_wide_random(unsigned long volatile *bufa, unsigned long volatile *bufb, size_t count); + diff --git a/commands/memtester/types.h b/commands/memtester/types.h new file mode 100644 index 0000000000..0291610d2c --- /dev/null +++ b/commands/memtester/types.h @@ -0,0 +1,35 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Very simple but very effective user-space memory tester. + * Originally by Simon Kirby <sim@xxxxxxxxxxx> <sim@xxxxxxxxx> + * Version 2 by Charles Cazabon <charlesc-memtester@xxxxxxxxxx> + * Version 3 not publicly released. + * Version 4 rewrite: + * Copyright (C) 2004-2010 Charles Cazabon <charlesc-memtester@xxxxxxxxxx> + * + * This file contains typedefs, structure, and union definitions. + * + */ + +#include "sizes.h" + +typedef unsigned long ul; +typedef unsigned long long ull; +typedef unsigned long volatile ulv; +typedef unsigned char volatile u8v; +typedef unsigned short volatile u16v; + +struct test { + char *name; + int (*fp)(ulv *, ulv *, size_t); +}; + +typedef union { + unsigned char bytes[UL_LEN/8]; + ul val; +} mword8_t; + +typedef union { + unsigned short u16s[UL_LEN/16]; + ul val; +} mword16_t; -- 2.20.1 _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox
