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#!/bin/bash
##
# Copyright (c) 2021, Konstantin Aladyshev <aladyshev22@gmail.com>
#
# SPDX-License-Identifier: MIT
##
##### Controllable parameters #####
QEMU_SHARED_FOLDER=~/UEFI_disk
###################################
function show_help {
echo "Description:"
echo " run_gdb_ovmf.sh is a script that helps to debug OVMF"
echo ""
echo "Usage: run_gdb_ovmf.sh [-1] [-q <dir>]"
echo " -1 This is a first run of this configuration"
echo " (in this case before main gdb launch there would be another QEMU start that will create 'debug.log' file)"
echo " -q <dir> QEMU shared directory"
echo " (by default it is equal to QEMU_SHARED_FOLDER variable in the head of the script)"
echo ""
echo "Examples:"
echo " run_gdb_ovmf.sh -1 - create 'debug.log' file with the necessary address information"
echo " and debug OVMF it with gdb"
echo " run_gdb_ovmf.sh - debug OVMF with gdb ('debug.log' was created in the last run, no need to remake it again)"
}
# A POSIX variable
OPTIND=1 # Reset in case getopts has been used previously in the shell.
while getopts "h?1q:" opt; do
case "$opt" in
h|\?)
show_help
exit 0
;;
1) FIRST_RUN=1
;;
q) QEMU_SHARED_FOLDER=$OPTARG
;;
esac
done
shift $((OPTIND-1))
[ "${1:-}" = "--" ] && shift
function test_file {
FILE_NAME=$1
if [[ ! -f ${FILE_NAME} ]]; then
echo "Error! There is no file ${FILE_NAME}"
exit 1;
fi
}
OVMF="Build/OvmfX64/DEBUG_GCC5/FV/OVMF.fd"
test_file "${OVMF}"
if [[ ! -z "${FIRST_RUN}" || ! -f debug.log ]]; then
touch debug.log
# If it is a first run, we need to create 'debug.log' file for addresses
tmux new-session \; \
send-keys "tail -f debug.log" Enter \; \
split-window -v \; \
send-keys "qemu-system-x86_64 \
-drive if=pflash,format=raw,readonly,file=${OVMF} \
-drive format=raw,file=fat:rw:${QEMU_SHARED_FOLDER} \
-net none \
-nographic \
-global isa-debugcon.iobase=0x402 \
-debugcon file:debug.log \
-s" C-m Enter \;
fi
touch debug_temp.log
tmux new-session \; \
send-keys "gdb -ex 'source efi.py' -tui" Enter \; \
split-window -h \; \
send-keys "tail -f debug_temp.log" Enter \; \
split-window -v \; \
send-keys "qemu-system-x86_64 \
-drive if=pflash,format=raw,readonly,file=${OVMF} \
-drive format=raw,file=fat:rw:${QEMU_SHARED_FOLDER} \
-net none \
-nographic \
-global isa-debugcon.iobase=0x402 \
-debugcon file:debug_temp.log \
-s -S" C-m Enter \; \
select-pane -t 0 \; \
send-keys "efi -64" Enter \; \
send-keys "target remote :1234" Enter \;
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