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feat(flash): add --prepare for download-and-extract only #113

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dakejahl wants to merge 1 commit into from
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feat(flash): add --prepare for download-and-extract only #113

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6 changes: 6 additions & 0 deletions packaging/README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -95,6 +95,12 @@ Or flash the latest release for a product:
./flash_from_package.sh pab
```

Download and extract only (no device) — useful to warm the cache ahead of a flash, or so a manufacturing bench can time the multi-GB fetch separately from the flash itself:

```
./flash_from_package.sh pab --prepare
```

The script downloads the package, extracts it, waits for a Jetson in recovery mode, and flashes. No build tools or kernel source needed — just a Debian/Ubuntu host with USB.

Each version is cached in `~/.ark-jetson-cache/<tag>/` so re-running after a failure or switching between versions doesn't re-download.
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23 changes: 20 additions & 3 deletions packaging/flash_from_package.sh
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Expand Up @@ -21,6 +21,7 @@
# ./flash_from_package.sh <product> # latest published release for a product (pab, jaj, pab-v3)
# ./flash_from_package.sh <product> --draft # latest DRAFT release for a product (needs gh read access)
# ./flash_from_package.sh <tag> --full # regenerate images even if cached ones match
# ./flash_from_package.sh <tag> --prepare # download+extract only; leave the flash for a later run
# ./flash_from_package.sh --clean # remove all cached data

set -euo pipefail
Expand All @@ -38,6 +39,7 @@ usage() {
echo " $(basename "$0") pab-v3 Flash the latest PAB_V3 release"
echo " $(basename "$0") pab-v3 --draft Flash the latest PAB_V3 DRAFT (needs gh read access)"
echo " $(basename "$0") pab --full Regenerate flash images even if cached ones match"
echo " $(basename "$0") pab --prepare Download and extract only (no device, no flash)"
echo " $(basename "$0") --clean Remove all cached data"
echo ""
echo "Note: PAB Rev3 is not the same as PAB_V3. PAB_V3 is a separate product."
Expand All @@ -55,12 +57,14 @@ is_product_name() {

FORCE_FULL=0
WANT_DRAFT=0
PREPARE_ONLY=0
args=()
for arg in "$@"; do
case "$arg" in
--full) FORCE_FULL=1 ;;
--draft) WANT_DRAFT=1 ;;
*) args+=("$arg") ;;
--full) FORCE_FULL=1 ;;
--draft) WANT_DRAFT=1 ;;
--prepare) PREPARE_ONLY=1 ;;
*) args+=("$arg") ;;
esac
done
set -- "${args[@]}"
Expand Down Expand Up @@ -510,6 +514,19 @@ if [ -n "$BUILD_INFO" ]; then
echo "========================================="
fi

# --prepare: stop after the package is on disk. Used by the manufacturing bench so
# a multi-GB cold-cache download has its own long timeout, separate from the flash.
if [ "$PREPARE_ONLY" = 1 ]; then
echo ""
echo "========================================="
echo " Package ready"
echo "========================================="
echo "Release: $RELEASE_TAG"
echo "Cached at: $CACHE_DIR"
echo "Rerun without --prepare to flash a Jetson in recovery mode."
exit 0
fi

# --- Wait for Jetson and flash ---

cd "$L4T_DIR"
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