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