Pratik Prajapati | 21deb06 | 2015-09-02 13:14:20 -0700 | [diff] [blame] | 1 | #!/bin/bash |
| 2 | |
| 3 | # |
| 4 | # This file is part of the coreboot project. |
| 5 | # |
| 6 | # Copyright (C) 2015 Intel Corporation. |
| 7 | # |
| 8 | # This program is free software; you can redistribute it and/or modify |
| 9 | # it under the terms of the GNU General Public License as published by |
| 10 | # the Free Software Foundation; version 2 of the License. |
| 11 | # |
| 12 | # This program is distributed in the hope that it will be useful, |
| 13 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | # GNU General Public License for more details. |
| 16 | # |
| 17 | # You should have received a copy of the GNU General Public License |
| 18 | # along with this program; if not, write to the Free Software |
| 19 | # Foundation, Inc. |
| 20 | # |
| 21 | |
| 22 | mma_results_op_bin="${1}" |
| 23 | mma_results_op_bin_tmp="${mma_results_op_bin}".tmp |
| 24 | mma_cbmem_id="0x4d4d4144" |
| 25 | |
| 26 | show_usage() { |
| 27 | printf "usage: $(basename "${0}") <output_results.bin>\n" |
| 28 | printf "pass path of a bin file where you want to save results.\n" |
| 29 | } |
| 30 | |
| 31 | # |
| 32 | # main entry point |
| 33 | # |
| 34 | |
| 35 | main() { |
| 36 | if [ ! "${mma_results_op_bin}" ];then |
| 37 | show_usage |
| 38 | exit -1 |
| 39 | fi |
| 40 | |
| 41 | printf "Reading cbmem ...\n" |
| 42 | cbmem -r ${mma_cbmem_id} > "${mma_results_op_bin_tmp}" || \ |
| 43 | { |
| 44 | printf "error in executing cbmem utility\n" ; |
| 45 | exit -1; |
| 46 | } |
| 47 | |
| 48 | #format of o/p is : |
| 49 | # <mma_signature><mma_test_header+data> |
| 50 | # |
| 51 | # where, |
| 52 | # <mma_signature> is 32bit length string "MMAD" |
| 53 | # |
| 54 | # <mma_test_header+data> is the FULL HOB which coreboot |
| 55 | # receives from FSP |
| 56 | # <mma_test_header> is 22 bytes long at the start of the HOB. |
| 57 | # MMA data starts right after 26 bytes |
| 58 | # 26 bytes = (4 bytes of "MMAD" |
| 59 | # + 22 bytes of mma_test_header) |
| 60 | # |
| 61 | |
| 62 | mma_signature=$(dd if="${mma_results_op_bin_tmp}" bs=1 count=4 ) |
| 63 | |
| 64 | if [[ ${mma_signature} != "MMAD" ]];then |
| 65 | printf "MMA signature mismatch" > "${mma_results_op_bin}" |
| 66 | rm -r "${mma_results_op_bin_tmp}" |
| 67 | cbmem -l >> "${mma_results_op_bin}" |
| 68 | printf "MMA signature mismatch\n" |
| 69 | exit -1 |
| 70 | fi |
| 71 | |
| 72 | dd if="${mma_results_op_bin_tmp}" of="${mma_results_op_bin}" bs=1 skip=26 || \ |
| 73 | { |
| 74 | printf "error in generating "${mma_results_op_bin}"\n" ; |
| 75 | exit -1; |
| 76 | } |
| 77 | rm -r "${mma_results_op_bin_tmp}" |
| 78 | printf "MMA data saved to "${mma_results_op_bin}"\n" |
| 79 | } |
| 80 | |
| 81 | main "$@" |