Kconfig

mainmenu "PebbleOS Configuration"

# Per-SoC symbol defaults; loaded first so they take precedence.
osource "soc/*/Kconfig.defconfig"

rsource "soc/Kconfig"

config RELEASE
    bool "Release build"
    help
      Whether this is a release build. Pass
      `-DCONFIG_RELEASE=y` to `./waf configure` to enable. Gates
      features like Memfault crash reporting that should only run on
      shipping firmware.

config RECOVERY_FW
    bool "Recovery firmware (PRF)"
    help
      Build the recovery firmware variant. Set via prj_prf.conf when
      configuring with --variant=prf; do not set manually.

config MFG
    bool "Manufacturing firmware"
    help
      Enable manufacturing-only functionality in the PRF build. PRF
      and MFG firmwares are mostly the same, so MFG builds also
      define the recovery-firmware symbols.

config PBLBOOT
    bool "PBLBOOT bootloader"
    help
      Build for the PBLBOOT bootloader: prepend the PBLBOOT image
      header to the firmware binary and assume a two-slot flash
      layout with direct XIP. Disable for boards whose SoC bootloader
      consumes a raw image and uses a single firmware slot.

menu "Compiler options"

config LTO
    bool "Link-time optimization"

choice
    prompt "Optimization level"
    default SIZE_OPTIMIZATIONS

config SIZE_OPTIMIZATIONS
    bool "Optimize for size (-Os)"

config DEBUG_OPTIMIZATIONS
    bool "Optimize for debugging (-Og)"

config NO_OPTIMIZATIONS
    bool "No optimizations (-O0)"
    help
      Previously known as "fat firmware". Requires 1M of onboard
      flash.

endchoice

config COMPILER_SAVE_TEMPS
    bool "Save compiler temporaries"
    help
      Save *.i and *.s files during compilation.

config DEBUG_INFO
    bool "Debug information"
    default y
    help
      Compile with -g3 debug information.

endmenu

config IS_BIGBOARD
    bool "Bigboard revision"
    help
      Engineering/development PCB revision of a board (`_bb` suffix
      in the board name). Gates bigboard-only behaviour that differs
      from the shipping board.

# Source the active board's Kconfig and its per-board defaults; kconfig.py
# exports $(BOARD) and $(BOARD_REVISION) from the --board argument.
rsource "boards/$(BOARD)/Kconfig"
osource "boards/$(BOARD)/Kconfig.$(BOARD_REVISION)"
rsource "boards/$(BOARD)/Kconfig.defconfig"
osource "boards/$(BOARD)/Kconfig.defconfig.$(BOARD_REVISION)"

config QEMU_MACHINE
    string
    depends on QEMU
    help
      QEMU machine identifier passed to qemu-system-arm via the
      `-machine` flag. Set per board in
      boards/<board>/Kconfig.defconfig.

choice
    prompt "SDK platform"
config PLATFORM_EMERY
    bool "Emery"
config PLATFORM_FLINT
    bool "Flint"
config PLATFORM_GABBRO
    bool "Gabbro"
endchoice

# App RAM sizes for each SDK app execution environment (2x/3x/4x) supported by
# the model. For each environment, SEGMENT is the RAM given to the app itself
# (stack + text + data + bss + heap) and RUNTIME is the RAM reserved for the
# application runtime (AppState). A SEGMENT of 0 means the environment is
# unsupported. SEGMENT must be a multiple of eight bytes, as the process loader
# enforces eight-byte alignment on all segments.
#
# emery and gabbro use a 4 KiB app stack (see APP_STACK_NORMAL_SIZE); their
# segment is sized 2 KiB larger to compensate. All other platforms keep the
# 2 KiB stack and the historical segment sizes.
#
# The per-platform constants below are the source of truth; each environment
# just selects which legacy SDK platform it maps to.

config APP_RAM_APLITE_SEGMENT_SIZE
    int
    default 25952

config APP_RAM_APLITE_RUNTIME_SIZE
    int
    default 6820

config APP_RAM_BASALT_SEGMENT_SIZE
    int
    default 67584

config APP_RAM_BASALT_RUNTIME_SIZE
    int
    default 30720

config APP_RAM_CHALK_SEGMENT_SIZE
    int
    default 67584

config APP_RAM_CHALK_RUNTIME_SIZE
    int
    default 30720

config APP_RAM_FLINT_SEGMENT_SIZE
    int
    default 67584

config APP_RAM_FLINT_RUNTIME_SIZE
    int
    default 30720

config APP_RAM_EMERY_SEGMENT_SIZE
    int
    default 135168

config APP_RAM_EMERY_RUNTIME_SIZE
    int
    default 63488

config APP_RAM_GABBRO_SEGMENT_SIZE
    int
    default 135168

config APP_RAM_GABBRO_RUNTIME_SIZE
    int
    default 96256

config APP_RAM_2X_SEGMENT_SIZE
    int
    default APP_RAM_APLITE_SEGMENT_SIZE if PLATFORM_EMERY
    default APP_RAM_APLITE_SEGMENT_SIZE if PLATFORM_FLINT
    default 0

config APP_RAM_2X_RUNTIME_SIZE
    int
    default APP_RAM_APLITE_RUNTIME_SIZE if PLATFORM_EMERY
    default APP_RAM_APLITE_RUNTIME_SIZE if PLATFORM_FLINT
    default 0

config APP_RAM_3X_SEGMENT_SIZE
    int
    default APP_RAM_BASALT_SEGMENT_SIZE if PLATFORM_EMERY
    default APP_RAM_APLITE_SEGMENT_SIZE if PLATFORM_FLINT
    default APP_RAM_CHALK_SEGMENT_SIZE if PLATFORM_GABBRO
    default 0

config APP_RAM_3X_RUNTIME_SIZE
    int
    default APP_RAM_BASALT_RUNTIME_SIZE if PLATFORM_EMERY
    default APP_RAM_APLITE_RUNTIME_SIZE if PLATFORM_FLINT
    default APP_RAM_CHALK_RUNTIME_SIZE if PLATFORM_GABBRO
    default 0

config APP_RAM_4X_SEGMENT_SIZE
    int
    default APP_RAM_EMERY_SEGMENT_SIZE if PLATFORM_EMERY
    default APP_RAM_FLINT_SEGMENT_SIZE if PLATFORM_FLINT
    default APP_RAM_GABBRO_SEGMENT_SIZE if PLATFORM_GABBRO
    default 0

config APP_RAM_4X_RUNTIME_SIZE
    int
    default APP_RAM_EMERY_RUNTIME_SIZE if PLATFORM_EMERY
    default APP_RAM_FLINT_RUNTIME_SIZE if PLATFORM_FLINT
    default APP_RAM_GABBRO_RUNTIME_SIZE if PLATFORM_GABBRO
    default 0

config SRAM_BASE
    hex
    help
      Base address of the SRAM available to PebbleOS (kernel + worker +
      app). Defaulted per SoC in soc/*/Kconfig.defconfig.

config SRAM_SIZE
    hex
    help
      Size of the SRAM available to PebbleOS (kernel + worker + app).
      Defaulted per SoC in soc/*/Kconfig.defconfig.

config FLASH_BASE
    hex
    help
      Base address of the memory-mapped flash the firmware is linked to
      run from. Defaulted per SoC in soc/*/Kconfig.defconfig.

config FLASH_SIZE
    hex
    help
      Total size of the memory-mapped flash the firmware is linked to
      run from. Defaulted per SoC in soc/*/Kconfig.defconfig.

config FLASH_OFFSET
    hex
    help
      Offset of the flash area this firmware image is linked to run
      from, relative to FLASH_BASE (e.g. past the bootloader, or past
      the first slot when linking for the second one). Defaulted per
      SoC in soc/*/Kconfig.defconfig.

config FIRMWARE_OFFSET
    int
    default 0
    help
      Offset of the firmware image within its flash slot, reserving room
      for the image header. Defaulted per SoC in soc/*/Kconfig.defconfig.

config FIRMWARE_SLOT
    int "Firmware flash slot to link for"
    range 0 1
    default 0
    help
      On boards with multiple firmware slots (PBLBOOT), which slot this
      image is linked for. Select with -DCONFIG_FIRMWARE_SLOT=1 at
      configure time.

config RECOVERY_FW_AS_FW
    bool "Link the recovery firmware into the normal firmware area"
    help
      Build PRF linked to the normal firmware flash area instead of its
      own. Select with -DCONFIG_RECOVERY_FW_AS_FW=y at configure time.

config FW_FLASH_SIZE
    hex
    help
      Flash space available to this firmware image. Defaulted per SoC or
      board; a board may shrink it, e.g. when the recovery firmware
      shares a flash bank with the normal firmware.

choice
    prompt "Screen color depth"

config SCREEN_COLOR_DEPTH_BITS_1
    bool "1-bit (monochrome)"

config SCREEN_COLOR_DEPTH_BITS_8
    bool "8-bit (palette)"

endchoice

config SCREEN_COLOR_DEPTH_BITS
    int
    default 1 if SCREEN_COLOR_DEPTH_BITS_1
    default 8 if SCREEN_COLOR_DEPTH_BITS_8

rsource "lib/c/Kconfig"
rsource "subsys/Kconfig"
rsource "src/Kconfig"
rsource "third_party/Kconfig"