bootstrap.sh: limit Zephyr HALs by default

This reworks the current west.yml and bootstrap.sh so that only the HALs
used by the Arduino core are installed by default.

Since those not named in the allowlist are discarded during the Zephyr
import, it is impossible to allow the option to install every HAL that
way. Instead, allow all HALs by path, then filter them by group using
the 'manifest.project-filter' config that is automatically set by
bootstrap.sh. This allows to enable all HALs, if needed, by simply
removing the filter.

Author: pillo79

README.md

@@ -181,6 +181,20 @@ After running the `bootstrap.sh` script, you can symlink the core to `$sketchboo
 
 ## 🚀 Adding a new target
 
+> [!TIP]
+>
+> While Zephyr supports a lot of different hardware targets, only the few
+> currently used by the Arduino core are installed by default. To add the
+> support for every Zephyr target to your workspace, run the following
+> commands:
+>
+> ```bash
+> . venv/bin/activate
+> west config -d manifest.project-filter
+> west sdk install
+> west update
+> ```
+
 To add a new board that is already supported by mainline Zephyr with the target `$your_board`, follow these steps:
 
 * Get the variant name from your board by running `extra/get_variant_name.sh $your_board`.

extra/bootstrap.sh

@@ -5,10 +5,16 @@ if [ ! -f platform.txt ]; then
   exit 2
 fi
 
+HAL_FILTER="-hal_.*"
+for hal in hal_nordic hal_nxp hal_renesas hal_stm32; do
+  HAL_FILTER="$HAL_FILTER,+$hal"
+done
+
 python3 -m venv venv
 source venv/bin/activate
 pip install west
 west init -l .
+west config manifest.project-filter -- "$HAL_FILTER"
 west update "$@"
 west zephyr-export
 pip install -r ../zephyr/scripts/requirements-base.txt

extra/build_all.sh

@@ -2,7 +2,7 @@
 
 FORCE=false
 
-while getopts "hfl" opt; do
+while getopts "hf" opt; do
 	case $opt in
 		h)
 			echo "Usage: $0 [-hfl]"

west.yml

@@ -26,28 +26,21 @@ manifest:
         name-allowlist:
           - cmsis
           - cmsis_6
-          - hal_nordic
-          - hal_ti
-          - hal_ambiq
-          - hal_espressif
-          - hal_infineon
-          - hal_intel
-          - hal_nxp
-          - hal_stm32
-          - hal_xtensa
-          - hal_nordic
-          - hal_renesas
-          - hal_adi
-          - hal_atmel
-          - hal_rpi_pico
-          - hal_silabs
           - littlefs
           - tinycrypt
           - mbedtls
           - segger
           - thrift
           - mcuboot
           - lvgl
+        path-allowlist:
+          - modules/hal/*
+
+        # The actual list of enabled HALs is set by extra/bootstrap.sh via
+        # the 'manifest.project-filter' config. Enable all Zephyr HALs with:
+        #
+        #   west config -d manifest.project-filter
+
     - name: ArduinoCore-API
       path: modules/lib/ArduinoCore-API
       revision: master