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/*
// Copyright (c) 2019 Intel Corporation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// Abstract: default FRU generation
//
*/
#include <fstream>
#include <iostream>
#include <iterator>
#include <numeric>
#include <string>
#include <vector>
constexpr uint8_t fillChar = '.';
constexpr uint8_t eof = 0xc1;
const std::string intel = "Intel Corporation";
// round up to nearest block size (power of 2)
constexpr size_t blockRound(size_t len, size_t blk)
{
return ((len) + (((blk) - ((len) & ((blk)-1))) & ((blk)-1)));
}
uint8_t mklen(uint8_t len)
{
return static_cast<uint8_t>((0x3 << 6) | len);
}
struct FruEntry
{
static constexpr size_t fruBlockSize = 8; // type, length, checksum
static constexpr size_t fixedBytes = 3; // type, length, checksum
FruEntry() = delete;
FruEntry(const std::vector<uint8_t>& contents)
{
constexpr size_t verOffset = 0;
constexpr size_t lenOffset = 1;
value.resize(blockRound(fixedBytes + contents.size(), fruBlockSize));
value[verOffset] = 1;
value[lenOffset] = blocks();
std::copy(contents.begin(), contents.end(), value.begin() + 2);
addChecksum();
}
void addChecksum()
{
int sum = std::accumulate(value.begin(), value.end(), 0);
value.back() = static_cast<uint8_t>(256 - sum & 0xff);
}
uint8_t blocks() const
{
return static_cast<uint8_t>(value.size() / 8);
}
std::vector<uint8_t> value;
};
size_t fillDots(std::vector<uint8_t>::iterator start, size_t count)
{
*start++ = mklen(count); // prefix with (0xc0 | count)
auto end = start + count++;
std::fill(start, end, '.');
return count;
}
size_t fillStr(std::vector<uint8_t>::iterator start, const std::string& str)
{
size_t count = str.size();
*start++ = mklen(count++); // prefix with (0xc0 | count)
std::copy(str.begin(), str.end(), start);
return count;
}
std::vector<uint8_t> genChassisContents()
{
constexpr size_t pnSize = 18;
constexpr size_t snSize = 18;
constexpr size_t amSize = 31;
constexpr size_t headerSize = 1;
constexpr size_t contentSize = headerSize + 1 + pnSize + 1 + snSize + 1 +
amSize + 1 + amSize + sizeof(eof);
std::vector<uint8_t> data(contentSize);
size_t offset = 0;
// chassis type (main server chassis)
data[offset++] = 0x17;
// chassis part number
offset += fillDots(data.begin() + offset, pnSize);
// chassis serial number
offset += fillDots(data.begin() + offset, snSize);
// info am1
offset += fillDots(data.begin() + offset, amSize);
// info am2
offset += fillDots(data.begin() + offset, amSize);
data[offset] = eof;
return data;
}
std::vector<uint8_t> genBoardContents(const std::string& name)
{
constexpr size_t headerSize = 4;
constexpr size_t snSize = 12;
constexpr size_t pnSize = 10;
const std::string version = "FRU Ver 0.01";
size_t contentSize = headerSize + 1 + name.size() + 1 + intel.size() + 1 +
snSize + 1 + pnSize + 1 + version.size() + sizeof(eof);
std::vector<uint8_t> data(contentSize);
size_t offset = 0;
// chassis type (main server chassis)
data[offset++] = 0; // language code
data[offset++] = 0; // mfg date/time
data[offset++] = 0; // mfg date/time
data[offset++] = 0; // mfg date/time
// manufacturer name
offset += fillStr(data.begin() + offset, intel);
// product name
offset += fillStr(data.begin() + offset, name);
// board sn
offset += fillDots(data.begin() + offset, snSize);
// board pn
offset += fillDots(data.begin() + offset, pnSize);
// fru version string
offset += fillStr(data.begin() + offset, version);
data[offset] = eof;
return data;
}
std::vector<uint8_t> genProductContents(const std::string& name)
{
constexpr size_t headerSize = 1;
constexpr size_t pnSize = 10;
constexpr size_t pvSize = 20;
constexpr size_t snSize = 12;
constexpr size_t atSize = 20;
constexpr size_t idSize = 0;
const std::string version = "FRU Ver 0.01";
size_t contentSize = headerSize + 1 + intel.size() + 1 + name.size() + 1 +
pnSize + 1 + pvSize + 1 + snSize + 1 + atSize + 1 +
idSize + sizeof(eof);
std::vector<uint8_t> data(contentSize);
size_t offset = 0;
// chassis type (main server chassis)
data[offset++] = 0; // language code
// manufacturer name
offset += fillStr(data.begin() + offset, intel);
// product name
offset += fillStr(data.begin() + offset, name);
// product part number
offset += fillDots(data.begin() + offset, pnSize);
// product version
offset += fillDots(data.begin() + offset, pvSize);
// product serial number
offset += fillDots(data.begin() + offset, snSize);
// product asset tag
offset += fillDots(data.begin() + offset, atSize);
// empty fru file id
offset += fillDots(data.begin() + offset, idSize);
data[offset] = eof;
return data;
}
int createFru(const std::string& name)
{
std::vector<uint8_t> internal{1, 0, 0, 0, 0, 0, 0, 1}; // fixed data
FruEntry chassis(genChassisContents());
FruEntry board(genBoardContents(name));
FruEntry product(genProductContents(name));
uint8_t offset = 1; // room for header's offset
FruEntry header({
offset += 1, // internal size
offset += chassis.blocks(),
offset += board.blocks(),
});
std::string filename = name + ".fru.bin";
std::ofstream output(filename);
std::ostream_iterator<uint8_t> outputIter(output);
std::copy(header.value.begin(), header.value.end(), outputIter);
std::copy(internal.begin(), internal.end(), outputIter);
std::copy(chassis.value.begin(), chassis.value.end(), outputIter);
std::copy(board.value.begin(), board.value.end(), outputIter);
std::copy(product.value.begin(), product.value.end(), outputIter);
constexpr size_t minFruSize = 0x1ff;
size_t fruSize = header.value.size() + internal.size() +
chassis.value.size() + board.value.size() +
product.value.size();
if (fruSize < minFruSize)
{
std::vector<uint8_t> padding(minFruSize - fruSize);
std::copy(padding.begin(), padding.end(), outputIter);
}
output.close();
return 0;
}
int main(int argc, const char* argv[])
{
if (argc != 2)
{
std::cerr << "Usage: " << argv[0] << " <'Product Name'>\n";
return 1;
}
return createFru(argv[1]);
}
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