Yegor Timoshenko | c2e4941 | 2018-10-07 01:58:27 +0000 | [diff] [blame] | 1 | #!/usr/bin/env bash |
Pratik Prajapati | 21deb06 | 2015-09-02 13:14:20 -0700 | [diff] [blame] | 2 | # |
Patrick Georgi | 7333a11 | 2020-05-08 20:48:04 +0200 | [diff] [blame] | 3 | # SPDX-License-Identifier: GPL-2.0-only |
Pratik Prajapati | 21deb06 | 2015-09-02 13:14:20 -0700 | [diff] [blame] | 4 | |
| 5 | mma_results_op_bin="${1}" |
| 6 | mma_results_op_bin_tmp="${mma_results_op_bin}".tmp |
| 7 | mma_cbmem_id="0x4d4d4144" |
| 8 | |
| 9 | show_usage() { |
| 10 | printf "usage: $(basename "${0}") <output_results.bin>\n" |
| 11 | printf "pass path of a bin file where you want to save results.\n" |
| 12 | } |
| 13 | |
| 14 | # |
| 15 | # main entry point |
| 16 | # |
| 17 | |
| 18 | main() { |
| 19 | if [ ! "${mma_results_op_bin}" ];then |
| 20 | show_usage |
| 21 | exit -1 |
| 22 | fi |
| 23 | |
| 24 | printf "Reading cbmem ...\n" |
| 25 | cbmem -r ${mma_cbmem_id} > "${mma_results_op_bin_tmp}" || \ |
| 26 | { |
| 27 | printf "error in executing cbmem utility\n" ; |
| 28 | exit -1; |
| 29 | } |
| 30 | |
| 31 | #format of o/p is : |
| 32 | # <mma_signature><mma_test_header+data> |
| 33 | # |
| 34 | # where, |
| 35 | # <mma_signature> is 32bit length string "MMAD" |
| 36 | # |
| 37 | # <mma_test_header+data> is the FULL HOB which coreboot |
| 38 | # receives from FSP |
| 39 | # <mma_test_header> is 22 bytes long at the start of the HOB. |
| 40 | # MMA data starts right after 26 bytes |
| 41 | # 26 bytes = (4 bytes of "MMAD" |
| 42 | # + 22 bytes of mma_test_header) |
| 43 | # |
| 44 | |
| 45 | mma_signature=$(dd if="${mma_results_op_bin_tmp}" bs=1 count=4 ) |
| 46 | |
| 47 | if [[ ${mma_signature} != "MMAD" ]];then |
| 48 | printf "MMA signature mismatch" > "${mma_results_op_bin}" |
| 49 | rm -r "${mma_results_op_bin_tmp}" |
| 50 | cbmem -l >> "${mma_results_op_bin}" |
| 51 | printf "MMA signature mismatch\n" |
| 52 | exit -1 |
| 53 | fi |
| 54 | |
| 55 | dd if="${mma_results_op_bin_tmp}" of="${mma_results_op_bin}" bs=1 skip=26 || \ |
| 56 | { |
| 57 | printf "error in generating "${mma_results_op_bin}"\n" ; |
| 58 | exit -1; |
| 59 | } |
| 60 | rm -r "${mma_results_op_bin_tmp}" |
| 61 | printf "MMA data saved to "${mma_results_op_bin}"\n" |
| 62 | } |
| 63 | |
| 64 | main "$@" |