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Build: report per-region memory usage after each build

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Pass --print-memory-usage to the linker and re-print its FLASH/RAM/CCMRAM
table in the build-script summary with a computed Free column, so the
headroom for further features is visible at the end of every build.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
This commit is contained in:
Marcus Kida 2026-07-14 10:49:22 +02:00
parent c614ba8096
commit 975661689a
2 changed files with 26 additions and 1 deletions
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26
build-firmware.sh
View file

@ -22,14 +22,38 @@ echo "==> Building toolchain image ($IMAGE)"
docker build --platform linux/amd64 -t "$IMAGE" "$REPO_DIR/docker"
echo "==> Running build in container ($PLATFORM)"
BUILD_LOG="$(mktemp)"
trap 'rm -f "$BUILD_LOG"' EXIT
# Stream to the terminal and capture a copy so we can re-show the linker's
# memory-usage table at the end (pipefail makes a build failure still abort).
docker run --rm --platform linux/amd64 \
-v "$REPO_DIR":/work \
"$IMAGE" \
bash /work/docker/build.sh "$PLATFORM"
bash /work/docker/build.sh "$PLATFORM" 2>&1 | tee "$BUILD_LOG"
echo
echo "==> Firmware ready:"
echo " $REPO_DIR/MDUV380_firmware/build/${OUT}.bin"
# Re-print the linker's per-region memory usage (emitted by --print-memory-usage
# during the link) with the free bytes worked out for each region.
if grep -q "Memory region" "$BUILD_LOG"; then
echo
echo "==> Memory usage (FLASH = code budget, RAM/CCMRAM = data budget):"
grep -A3 "Memory region" "$BUILD_LOG" | awk '
function toBytes(n, unit) {
if (unit == "KB") return n * 1024
if (unit == "MB") return n * 1024 * 1024
if (unit == "GB") return n * 1024 * 1024 * 1024
return n # already bytes
}
NR == 1 { printf " %-9s %11s %12s %8s %11s\n", "Region", "Used", "Size", "Used%", "Free"; next }
/:/ {
gsub(":", "", $1)
used = toBytes($2, $3); size = toBytes($4, $5); free = size - used
printf " %-9s %9d B %10d B %7s %9d B\n", $1, used, size, $6, free
}'
fi
echo
echo "Flash it (with the radio in firmware-update mode) using:"
echo " ./MDUV380_firmware/tools/opengd77_stm32_firmware_loader.py \\"

1
docker/firmware.mk
View file

@ -63,6 +63,7 @@ ASFLAGS := $(CPU) -x assembler-with-cpp -DDEBUG -g3 -MMD -MP
LDSCRIPT := ../STM32F405VGTX_FLASH.ld
LDFLAGS := $(CPU) -T$(LDSCRIPT) --specs=nano.specs \
-Wl,-Map=$(TARGET).map,--cref -Wl,--gc-sections -static \
-Wl,--print-memory-usage \
-Wl,--start-group -lc -lm -Wl,--end-group
# ---- Sources --------------------------------------------------------------