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authorAlexander Smirnov <alllecs@yandex.ru>2015-07-03 18:58:25 +0300
committerSascha Hauer <s.hauer@pengutronix.de>2015-07-14 07:09:19 +0200
commit5a7deee7d5cfbe95a5b6026e7ed09a2facd0c8d6 (patch)
treea9a9e54976d05db6fb41ca85f27c5fe235815ce9 /commands/spd_decode.c
parentf75fe310952a96f0a340d34cd58276a026f2df99 (diff)
downloadbarebox-5a7deee7d5cfbe95a5b6026e7ed09a2facd0c8d6.tar.gz
commands: add spd_decode command
spd_decode command is used for decoding and printing in human-readable format the information found in memory module SPD EEPROMs. There is the decode-dimms program from i2c-tools linux package (see http://www.lm-sensors.org/wiki/I2CTools) just for the same purpose. Though spd_decode source code is based on decode-dimms perl code there is a difference. Signed-off-by: Alexander Smirnov <alllecs@yandex.ru> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'commands/spd_decode.c')
-rw-r--r--commands/spd_decode.c63
1 files changed, 63 insertions, 0 deletions
diff --git a/commands/spd_decode.c b/commands/spd_decode.c
new file mode 100644
index 0000000..2bedcf0
--- /dev/null
+++ b/commands/spd_decode.c
@@ -0,0 +1,63 @@
+/*
+ * This program is decoding and printing SPD contents
+ * in human readable format
+ * As an argument program, you must specify the file name.
+ *
+ * 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 SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ALTERA CORPORATION BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+ * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Copyright (C) 2015 Alexander Smirnov <alllecs@yandex.ru>
+ */
+
+#include <common.h>
+#include <command.h>
+#include <libfile.h>
+#include <malloc.h>
+#include <ddr_spd.h>
+
+static int do_spd_decode(int argc, char *argv[])
+{
+ int ret;
+ size_t size;
+ void *data;
+
+ if (argc != 2)
+ return COMMAND_ERROR_USAGE;
+
+ ret = read_file_2(argv[1], &size, &data, 256);
+ if (ret && ret != -EFBIG) {
+ printf("unable to read %s: %s\n", argv[1], strerror(-ret));
+ return COMMAND_ERROR;
+ }
+
+ printf("Decoding EEPROM: %s\n\n", argv[1]);
+ ddr_spd_print(data);
+
+ free(data);
+
+ return 0;
+}
+
+BAREBOX_CMD_HELP_START(spd_decode)
+BAREBOX_CMD_HELP_TEXT("Decode a SPD EEPROM and print contents in human readable form")
+BAREBOX_CMD_HELP_END
+
+BAREBOX_CMD_START(spd_decode)
+ .cmd = do_spd_decode,
+ BAREBOX_CMD_DESC("Decode SPD EEPROM")
+ BAREBOX_CMD_OPTS("FILE")
+ BAREBOX_CMD_HELP(cmd_spd_decode_help)
+BAREBOX_CMD_END