[Buildroot] [PATCH 1/1] Fix rasberry Pi 64bit firmware overlay inclusion

[Peter Seiderer]

Hello Max,

On Thu,  3 Jan 2019 22:00:36 +1100, Matt Flax <flatmax at flatmax.org> wrote:

> This patch enables the inclusion of the Pi's overlays. Previously
> the overlays were not included in the genimage configuration.
> This patch ensures overlays are included in the sdcard (when
> enabled) by defaulting to the inclusion of an empty
> output/images/rpi-firmware/overlays directory in genimage cfg.
> 
> The Pi's overlays are built with the following config
> variables:
> BR2_PACKAGE_RPI_FIRMWARE=y
> BR2_PACKAGE_RPI_FIRMWARE_INSTALL_DTBS=y
> BR2_PACKAGE_RPI_FIRMWARE_INSTALL_DTB_OVERLAYS=y
> BR2_LINUX_KERNEL_IMAGE_TARGET_CUSTOM=y
> BR2_LINUX_KERNEL_IMAGE_NAME="Image"
> BR2_LINUX_KERNEL_IMAGE_TARGET_NAME="Image modules dtbs"
> 
> After building, the dtbo files are present in the
> output/images/rpi-firmware/overlays directory but not added
> to the sdcard because they are missing from the genimage cfg
> file.

Thanks for suggested patch, the reasoning for genimage-raspberrypi3-64.cfg not
containing a overlays entry is it is not needed for the raspberrypi3_64_defconfig
use case (mind the buildroot minimalistic defconfig approach) in contrast to the
raspberrypi3_defconfig where the overlay is needed for the pi3-miniuart-bt one...

Adding a (maybe) empty overlays directory to the sdcard image would violate
the minimalistic approach...

Regards,
Peter

[Skipped CC to 'Matt Flax <flatmax at flatmax.org>' - mail server answers with 'mailbox unavailable']

> 
> Signed-off-by: Matt Flax <flatmax at flatmax.org>
> ---
>  board/raspberrypi/genimage-raspberrypi3-64.cfg | 1 +
>  package/rpi-firmware/rpi-firmware.mk           | 4 ++++
>  2 files changed, 5 insertions(+)
> 
> diff --git a/board/raspberrypi/genimage-raspberrypi3-64.cfg b/board/raspberrypi/genimage-raspberrypi3-64.cfg
> index 0d0ca750a7..af1d17cde7 100644
> --- a/board/raspberrypi/genimage-raspberrypi3-64.cfg
> +++ b/board/raspberrypi/genimage-raspberrypi3-64.cfg
> @@ -9,6 +9,7 @@ image boot.vfat {
>        "rpi-firmware/config.txt",
>        "rpi-firmware/fixup.dat",
>        "rpi-firmware/start.elf",
> +      "rpi-firmware/overlays",
>        "Image"
>      }
>    }
> diff --git a/package/rpi-firmware/rpi-firmware.mk b/package/rpi-firmware/rpi-firmware.mk
> index bb54904ae6..0df7b17cbd 100644
> --- a/package/rpi-firmware/rpi-firmware.mk
> +++ b/package/rpi-firmware/rpi-firmware.mk
> @@ -24,6 +24,10 @@ define RPI_FIRMWARE_INSTALL_DTB_OVERLAYS
>  		$(INSTALL) -D -m 0644 $${ovldtb} $(BINARIES_DIR)/rpi-firmware/overlays/$${ovldtb##*/} || exit 1; \
>  	done
>  endef
> +else
> +define RPI_FIRMWARE_INSTALL_DTB_OVERLAYS
> +		$(INSTALL) -d $(BINARIES_DIR)/rpi-firmware/overlays || exit 1;
> +endef
>  endif
>  
>  ifeq ($(BR2_PACKAGE_RPI_FIRMWARE_INSTALL_VCDBG),y)