scripts/build-fpga-rom

#!/bin/bash

# Copyright 2021 The ChromiumOS Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

# Builds the Rust FPGA ROM.

set -e

PROJECT_ROOT=$(git rev-parse --show-toplevel)
ROM="${PROJECT_ROOT}/build/hps_platform/fpga_rom.bin"

# If we're outside the chroot, rerun inside.
if [ ! -e /etc/cros_chroot_version ] ; then
    exec "${PROJECT_ROOT}/scripts/run-tool" "$0" "$@"
fi

FEATURES="${FEATURES-tflm}"
PROFILE="${PROFILE-release}"

source "${PROJECT_ROOT}/environment"

cd "${PROJECT_ROOT}/rust/riscv"
BUILD_FLAGS=(
    -p fpga_rom
    --profile "${PROFILE}"
    --no-default-features
    --features "${FEATURES}")

cargo build "${BUILD_FLAGS[@]}"

# For the dev profile, cargo outputs to "debug". For "release" and any custom
# profiles it outputs to the profile name.
if [[ "${PROFILE}" == "dev" ]]; then
    PROFILE_OUT="debug"
else
    PROFILE_OUT="${PROFILE}"
fi

llvm-objcopy \
    "target/riscv32i-unknown-none-elf/${PROFILE_OUT}/fpga_rom" \
    -O binary \
    "${ROM}"