Vpd-tool:Read keyword from hardware
Vpd-tool adds an option to read any keyword
directly from hardware with the help of -H option.
This commit has the front-end portion which gets the
user option and calls the back end code which is present
in Impl class in this commit
https://gerrit.openbmc.org/c/openbmc/openpower-vpd-parser/+/47666 .
Test:
Tested on rainier.
1.
root@rain111bmc:/tmp# ./vpd-tool -r -O /sys/bus/spi/drivers/at25/spi12.0/eeprom -R CP00 -K PG -H
{
"/sys/bus/spi/drivers/at25/spi12.0/eeprom": {
"PG": "0x01e03fffe051ffe37fffe53fffffffffffffffffffffffffffe00c1fe00c1fffffffffffffe21dffe21dffffffffffffffe79fffe39fffe79fffe79fffffffffffffffffffffffffffffffffffffffe3bdffe3bdffe3bdffffffffe3bdffe3bdffe7f9ffe1987fe0001fe7f9ffe7f9ffe0001fe6619fe0001fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"
}
}
root@rain111bmc:/tmp# ./vpd-tool -r -O /system/chassis/motherboard/dcm0/cpu0 -R CP00 -K PG
{
"/system/chassis/motherboard/dcm0/cpu0": {
"PG": "0x01e03fffe051ffe37fffe53fffffffffffffffffffffffffffe00c1fe00c1fffffffffffffe21dffe21dffffffffffffffe79fffe39fffe79fffe79fffffffffffffffffffffffffffffffffffffffe3bdffe3bdffe3bdffffffffe3bdffe3bdffe7f9ffe1987fe0001fe7f9ffe7f9ffe0001fe6619fe0001fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"
}
}
2.
root@rain111bmc:/tmp# ./vpd-tool -r -H -O /sys/bus/spi/drivers/at25/spi12.0/eeprom -R VINI -K SN
{
"/sys/bus/spi/drivers/at25/spi12.0/eeprom": {
"SN": "YA3936110110"
}
}
root@rain111bmc:/tmp# ./vpd-tool -r -O /system/chassis/motherboard/dcm0/cpu0 -R VINI -K SN
{
"/system/chassis/motherboard/dcm0/cpu0": {
"SN": "YA3936110110"
}
}
3.
root@rain111bmc:/tmp# ./vpd-tool -r -H -O /sys/bus/i2c/drivers/at24/8-0050/eeprom -R VSYS -K BR
{
"/sys/bus/i2c/drivers/at24/8-0050/eeprom": {
"BR": "S0"
}
}
4.
root@rain111bmc:/tmp# ./vpd-tool -r -H -O /sys/bus/i2c/drivers/at24/8-0050/eeprom -R VINI -K SN
{
"/sys/bus/i2c/drivers/at24/8-0050/eeprom": {
"SN": "Y131UF07302S"
}
}
5.
root@perfrain86bmctest:/tmp# ./vpd-tool -r -H -O /sys/bus/i2c/drivers/at24/7-0050/eeprom -R VR10 -K BD
The given keyword BD is not present in the given record VR10 in the given vpd path /sys/bus/i2c/drivers/at24/7-0050/eeprom
6.
root@perfrain86bmctest:/tmp# ./vpd-tool -r -H -O /sys/bus/i2c/drivers/at24/7-0050/eeprom -R CP00 -K SN
The given record CP00 is not present in the given vpd path /sys/bus/i2c/drivers/at24/7-0050/eeprom
7.
root@perfrain86bmctest:/tmp# ./vpd-tool -r -H -O /sys/bus/i2c/drivers/at24/7-0050/eeprom -R VR10 -K DC
{
"/sys/bus/i2c/drivers/at24/7-0050/eeprom": {
"DC": "BD 201908260800"
}
}
Signed-off-by: Priyanga Ramasamy <priyanga24@in.ibm.com>
Change-Id: I37f85fe22a2c98704bbc8f6090f0d83084d4c6f8
diff --git a/vpd_tool_impl.cpp b/vpd_tool_impl.cpp
index 9232121..2d777e9 100644
--- a/vpd_tool_impl.cpp
+++ b/vpd_tool_impl.cpp
@@ -1,5 +1,6 @@
#include "vpd_tool_impl.hpp"
+#include "impl.hpp"
#include "vpd_exceptions.hpp"
#include <cstdlib>
@@ -16,6 +17,7 @@
namespace fs = std::filesystem;
using json = nlohmann::json;
using namespace openpower::vpd::exceptions;
+using namespace openpower::vpd::parser;
Binary VpdTool::toBinary(const std::string& value)
{
@@ -515,4 +517,56 @@
throw(VpdJsonException("Json Parsing failed", INVENTORY_JSON_SYM_LINK));
}
return rc;
-}
\ No newline at end of file
+}
+
+void VpdTool::readKwFromHw()
+{
+ uint32_t startOffset = 0;
+
+ ifstream inventoryJson(INVENTORY_JSON_SYM_LINK);
+ auto jsonFile = nlohmann::json::parse(inventoryJson);
+
+ for (const auto& item : jsonFile["frus"][fruPath])
+ {
+ if (item.find("offset") != item.end())
+ {
+ startOffset = item["offset"];
+ }
+ }
+
+ Binary completeVPDFile;
+ completeVPDFile.resize(65504);
+ fstream vpdFileStream;
+ vpdFileStream.open(fruPath,
+ std::ios::in | std::ios::out | std::ios::binary);
+
+ vpdFileStream.seekg(startOffset, ios_base::cur);
+ vpdFileStream.read(reinterpret_cast<char*>(&completeVPDFile[0]), 65504);
+ completeVPDFile.resize(vpdFileStream.gcount());
+ vpdFileStream.clear(std::ios_base::eofbit);
+
+ if (completeVPDFile.empty())
+ {
+ throw std::runtime_error("Invalid File");
+ }
+ Impl obj(completeVPDFile);
+ std::string keywordVal = obj.readKwFromHw(recordName, keyword);
+
+ if (!keywordVal.empty())
+ {
+ json output = json::object({});
+ json kwVal = json::object({});
+ kwVal.emplace(keyword, keywordVal);
+
+ output.emplace(fruPath, kwVal);
+
+ debugger(output);
+ }
+ else
+ {
+ std::cerr << "The given keyword " << keyword << " or record "
+ << recordName
+ << " or both are not present in the given FRU path "
+ << fruPath << std::endl;
+ }
+}