From 196e9c002122d3469ab486d2f40af1e66dcdf067 Mon Sep 17 00:00:00 2001 From: Rob Barnes Date: Wed, 26 Aug 2020 12:47:27 -0600 Subject: util/spd_tools: Remove intel subfolder Move ddr4 and lp4x to spd_tools root folder. The tool now applies to non intel platforms. BUG=b:162939176 TEST=Run tool Signed-off-by: Rob Barnes Change-Id: I0941ea036d760ee27eb34f259f4506a4b7584bee Reviewed-on: https://review.coreboot.org/c/coreboot/+/44844 Reviewed-by: Furquan Shaikh Reviewed-by: Nick Vaccaro Tested-by: build bot (Jenkins) --- util/spd_tools/ddr4/gen_part_id.go | 215 +++++++++++++++++++++++++++++++++++++ 1 file changed, 215 insertions(+) create mode 100644 util/spd_tools/ddr4/gen_part_id.go (limited to 'util/spd_tools/ddr4/gen_part_id.go') diff --git a/util/spd_tools/ddr4/gen_part_id.go b/util/spd_tools/ddr4/gen_part_id.go new file mode 100644 index 0000000000..f67b4a9434 --- /dev/null +++ b/util/spd_tools/ddr4/gen_part_id.go @@ -0,0 +1,215 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ + +package main + +import ( + "encoding/csv" + "fmt" + "io" + "io/ioutil" + "log" + "os" + "path/filepath" + "strings" +) + +/* + * This program allocates DRAM strap IDs for different parts that are being used by the variant. + * + * It expects the following inputs: + * Pointer to SPD directory. This is the location where SPD files and SPD Manifest generated by + * gen_spd.go are placed. + * Pointer to Makefile directory. Makefile.inc generated by this program is placed in this + * location. + * Text file containing a list of memory parts names used by the board. Each line in the file + * is expected to have one memory part name. + */ +const ( + SPDManifestFileName = "spd_manifest.generated.txt" + MakefileName = "Makefile.inc" + DRAMIdFileName = "dram_id.generated.txt" +) + +func usage() { + fmt.Printf("\nUsage: %s \n\n", os.Args[0]) + fmt.Printf(" where,\n") + fmt.Printf(" spd_dir = Directory path containing SPD files and manifest generated by gen_spd.go\n") + fmt.Printf(" makefile_dir = Directory path where generated Makefile.inc should be placed\n") + fmt.Printf(" mem_parts_used_file = File containing list of memory parts used by the board\n\n\n") +} + +func checkArgs() error { + + for _, arg := range os.Args[1:] { + if _, err := os.Stat(arg); err != nil { + return err + } + } + + return nil +} + +/* + * Read input file that contains list of memory part names used by the variant (one on a line) + * and split into separate strings for each part name. + */ +func readParts(memPartsUsedFileName string) ([]string, error) { + lines, err := ioutil.ReadFile(memPartsUsedFileName) + if err != nil { + return nil, err + } + str := string(lines) + parts := strings.Split(str, "\n") + + return parts, nil +} + +/* + * Read SPD manifest file(CSV) generated by gen_spd program and generate two maps: + * 1. Part to SPD Map : This maps global memory part name to generated SPD file name + * 2. SPD to Index Map: This generates a map of deduplicated SPD file names to index assigned to + * that SPD. This function sets index for all SPDs to -1. This index gets + * updated as part of genPartIdInfo() depending upon the SPDs actually used + * by the variant. + */ +func readSPDManifest(SPDDirName string) (map[string]string, map[string]int, error) { + f, err := os.Open(filepath.Join(SPDDirName, SPDManifestFileName)) + if err != nil { + return nil, nil, err + } + defer f.Close() + r := csv.NewReader(f) + + partToSPDMap := make(map[string]string) + SPDToIndexMap := make(map[string]int) + + for { + fields, err := r.Read() + + if err == io.EOF { + break + } + + if err != nil { + return nil, nil, err + } + + if len(fields) != 2 { + return nil, nil, fmt.Errorf("CSV file is incorrectly formatted") + } + + partToSPDMap[fields[0]] = fields[1] + SPDToIndexMap[fields[1]] = -1 + } + + return partToSPDMap, SPDToIndexMap, nil +} + +/* Print information about memory part used by variant and ID assigned to it. */ +func appendPartIdInfo(s *string, partName string, index int) { + *s += fmt.Sprintf("%-30s %d (%04b)\n", partName, index, int64(index)) +} + +type partIds struct { + SPDFileName string + memParts string +} + +/* + * For each part used by variant, check if the SPD (as per the manifest) already has an ID + * assigned to it. If yes, then add the part name to the list of memory parts supported by the + * SPD entry. If not, then assign the next ID to the SPD file and add the part name to the + * list of memory parts supported by the SPD entry. + * + * Returns list of partIds that contains spdFileName and supported memory parts for each + * assigned ID. + */ +func genPartIdInfo(parts []string, partToSPDMap map[string]string, SPDToIndexMap map[string]int, makefileDirName string) ([]partIds, error) { + partIdList := []partIds{} + curId := 0 + var s string + + s += fmt.Sprintf("%-30s %s\n", "DRAM Part Name", "ID to assign") + + for _, p := range parts { + if p == "" { + continue + } + + SPDFileName,ok := partToSPDMap[p] + if !ok { + return nil, fmt.Errorf("Failed to find part ", p, " in SPD Manifest. Please add the part to global part list and regenerate SPD Manifest") + } + + index := SPDToIndexMap[SPDFileName] + if index != -1 { + partIdList[index].memParts += ", " + p + appendPartIdInfo(&s, p, index) + continue + } + + SPDToIndexMap[SPDFileName] = curId + + appendPartIdInfo(&s, p, curId) + entry := partIds{SPDFileName: SPDFileName, memParts: p} + partIdList = append(partIdList, entry) + + curId++ + } + + fmt.Printf("%s", s) + err := ioutil.WriteFile(filepath.Join(makefileDirName, DRAMIdFileName), []byte(s), 0644) + + return partIdList, err +} + +var generatedCodeLicense string = "## SPDX-License-Identifier: GPL-2.0-or-later" +var autoGeneratedInfo string = "## This is an auto-generated file. Do not edit!!" + +/* + * This function generates Makefile.inc under the variant directory path and adds assigned SPDs + * to SPD_SOURCES. + */ +func genMakefile(partIdList []partIds, makefileDirName string) error { + var s string + + s += fmt.Sprintf("%s\n%s\n\n", generatedCodeLicense, autoGeneratedInfo) + s += fmt.Sprintf("MEMORY_TYPE = ddr4\n\n") + s += fmt.Sprintf("SPD_SOURCES =\n") + + for i := 0; i < len(partIdList); i++ { + s += fmt.Sprintf("SPD_SOURCES += %s ", partIdList[i].SPDFileName) + s += fmt.Sprintf(" # ID = %d(0b%04b) ", i, int64(i)) + s += fmt.Sprintf(" Parts = %04s\n", partIdList[i].memParts) + } + + return ioutil.WriteFile(filepath.Join(makefileDirName, MakefileName), []byte(s), 0644) +} + +func main() { + if len(os.Args) != 4 { + usage() + log.Fatal("Incorrect number of arguments") + } + + SPDDir, MakefileDir, MemPartsUsedFile := os.Args[1], os.Args[2], os.Args[3] + + partToSPDMap, SPDToIndexMap, err := readSPDManifest(SPDDir) + if err != nil { + log.Fatal(err) + } + + parts, err := readParts(MemPartsUsedFile) + if err != nil { + log.Fatal(err) + } + + partIdList, err := genPartIdInfo(parts, partToSPDMap, SPDToIndexMap, MakefileDir) + if err != nil { + log.Fatal(err) + } + + if err := genMakefile(partIdList, MakefileDir); err != nil { + log.Fatal(err) + } +} -- cgit v1.2.3