From: Eric Auger <eric.auger@redhat.com> Introduce scripts that automate the generation of system register definitions from a given linux source tree arch/arm64/tools/sysreg. Invocation of ./update-aarch64-sysreg-code.sh $PATH_TO_LINUX_SOURCE_TREE in scripts directory generates target/arm/cpu-sysregs.h.inc containing defines for all system registers. [CH: update to handle current kernel sysregs structure, and to emit the re-worked register structures; cpu properties will be added later] Reviewed-by: Sebastian Ott <sebott@redhat.com> Signed-off-by: Eric Auger <eric.auger@redhat.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com> --- MAINTAINERS | 1 + scripts/arm-gen-cpu-sysregs-header.awk | 37 ++++++++++++++++++++++++++ scripts/update-aarch64-sysreg-code.sh | 32 ++++++++++++++++++++++ 3 files changed, 70 insertions(+) create mode 100755 scripts/arm-gen-cpu-sysregs-header.awk create mode 100755 scripts/update-aarch64-sysreg-code.sh diff --git a/MAINTAINERS b/MAINTAINERS index ada87bfa9e..73ae0ba448 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -459,6 +459,7 @@ M: Peter Maydell <peter.maydell@linaro.org> L: qemu-arm@nongnu.org S: Maintained F: target/arm/kvm.c +F: scripts/*-sysreg* MIPS KVM CPUs M: Huacai Chen <chenhuacai@kernel.org> diff --git a/scripts/arm-gen-cpu-sysregs-header.awk b/scripts/arm-gen-cpu-sysregs-header.awk new file mode 100755 index 0000000000..f92bbbafa7 --- /dev/null +++ b/scripts/arm-gen-cpu-sysregs-header.awk @@ -0,0 +1,37 @@ +#!/bin/awk -f +# SPDX-License-Identifier: GPL-2.0-or-later +# arm-gen-cpu-sysregs-header.awk: arm64 sysreg header include generator +# +# Usage: awk -f arm-gen-cpu-sysregs-header.awk $LINUX_PATH/arch/arm64/tools/sysreg + +BEGIN { + print "/* SPDX-License-Identifier: GPL-2.0-or-later */" + print "/* GENERATED FILE, DO NOT EDIT */" + print "/* use arm-gen-cpu-sysregs-header.awk to regenerate */" +} END { + print "" +} + +# skip blank lines and comment lines +/^$/ { next } +/^[\t ]*#/ { next } + +/^Sysreg\t/ || /^Sysreg /{ + + reg = $2 + op0 = $3 + op1 = $4 + crn = $5 + crm = $6 + op2 = $7 + + if (op0 == 3 && (op1==0 || op1==1 || op1==3) && crn==0 && (crm>=0 && crm<=7) && (op2>=0 && op2<=7)) { + print "DEF("reg", "op0", "op1", "crn", "crm", "op2")" + } + next +} + +{ + /* skip all other lines */ + next +} diff --git a/scripts/update-aarch64-sysreg-code.sh b/scripts/update-aarch64-sysreg-code.sh new file mode 100755 index 0000000000..7bba0bcd6f --- /dev/null +++ b/scripts/update-aarch64-sysreg-code.sh @@ -0,0 +1,32 @@ +#!/bin/sh -e +# +# SPDX-License-Identifier: GPL-2.0-or-later +# Update target/arm/cpu-sysregs.h +# from a linux source tree (arch/arm64/tools/sysreg) +# +# Copyright Red Hat, Inc. 2024 +# +# Authors: +# Eric Auger <eric.auger@redhat.com> +# + +scripts="$(dirname "$0")" +linux="$1" +output="$2" + +if [ -z "$linux" ] || ! [ -d "$linux" ]; then + cat << EOF +usage: update-aarch64-sysreg-code.sh LINUX_PATH [OUTPUT_PATH] + +LINUX_PATH Linux kernel directory to obtain the register definitions from +OUTPUT_PATH output directory, usually the qemu source tree (default: $PWD) +EOF + exit 1 +fi + +if [ -z "$output" ]; then + output="$PWD" +fi + +awk -f $scripts/arm-gen-cpu-sysregs-header.awk \ + $linux/arch/arm64/tools/sysreg > $output/target/arm/cpu-sysregs.h.inc -- 2.33.0