| #!/bin/bash |
| # |
| # |
| # SPDX-License-Identifier: GPL-2.0-only |
| |
| # Parses spd hex files and outputs the contents in various formats |
| # |
| # |
| # Outputs csv, set, and json in same folder as SPD_HEX_FILE |
| # |
| # Example: |
| # decode_spd.sh ../../src/mainboard/google/zork/spd/micron-MT40A512M16TB-062E-J.spd.hex |
| # |
| # Outputs ../../src/mainboard/google/zork/spd/micron-MT40A512M16TB-062E-J.spd.{json|csv|set} |
| # |
| # TODO: This script assumes bincfg binary is at ../bincfg/bincfg (which is the |
| # result of running the bincfg make), and the specs are at |
| # ../bincfg/*.spec. This dependency should be made more resilliant and |
| # configurable. |
| |
| set -e |
| |
| function read8 () { |
| echo $(( 16#$(xxd -s "${2}" -l 1 -p "${1}") )) |
| } |
| |
| for file in "$@" |
| do |
| bintmp=$(mktemp) |
| outfile="${file%.hex}.set" |
| |
| echo "Decoding ${file}, outputting to ${outfile}" |
| |
| grep -v '^#' "${file}" | xxd -r -p - "${bintmp}" |
| dram_type=$(read8 "${bintmp}" 2) |
| if [ ! "${dram_type}" -eq 12 ] |
| then |
| #TODO: Handle other dram types |
| printf "Error: Expecting dram4 (12), got %d\n" "${dram_type}" |
| continue |
| fi |
| |
| revision=$(read8 "${bintmp}" 1) |
| if [ ! "${revision}" -eq $((0x13)) ] |
| then |
| printf "Warning: Expecting revision 0x13, got 0x%x.\n" "${revision}" |
| fi |
| |
| module_type=$(read8 "${bintmp}" 3) |
| case "${module_type}" in |
| 1) # RDIMM |
| spec="../bincfg/ddr4_registered_spd_512.spec" |
| ;; |
| 2 | 3) #UDIMM | SO-DIMM |
| spec="../bincfg/ddr4_unbuffered_spd_512.spec" |
| ;; |
| * ) |
| printf "Error: Unhandled module type %d.\n" "${module_type}" |
| ;; |
| esac |
| |
| ../bincfg/bincfg -d "${spec}" "${bintmp}" "${outfile}" |
| grep -v '^#' "${outfile}" | sed -e 's/ = \([^,]\+\)/: "\1"/g' \ |
| > "${file%.hex}.json" |
| grep -v -e '^#' -e '^{' -e '^}' "${outfile}" | sed -e 's/=/,/g' \ |
| > "${file%.hex}.csv" |
| done |