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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>
This commit is contained in:
Alexander Smirnov 2015-07-03 18:58:25 +03:00 committed by Sascha Hauer
parent f75fe31095
commit 5a7deee7d5
3 changed files with 71 additions and 0 deletions
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7
commands/Kconfig
View File

@ -2102,6 +2102,13 @@ config CMD_STATE
depends on STATE
prompt "state"
config CMD_SPD_DECODE
tristate
prompt "spd_decode"
select DDR_SPD
help
decode spd eeprom
# end Miscellaneous commands
endmenu

1
commands/Makefile
View File

@ -112,3 +112,4 @@ obj-$(CONFIG_CMD_NV) += nv.o
obj-$(CONFIG_CMD_DEFAULTENV) += defaultenv.o
obj-$(CONFIG_CMD_STATE) += state.o
obj-$(CONFIG_CMD_DHCP) += dhcp.o
obj-$(CONFIG_CMD_SPD_DECODE) += spd_decode.o

63
commands/spd_decode.c Normal file
View File

@ -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