[Buildroot] [PATCH 1/2] linux: install firmware to staging.

[Yann E. MORIN <yann.morin.1998@free.fr>]

On 2013-07-07 18:31 -0500, Spenser Gilliland spake thusly:
> Install firmware to staging when the hidden option
> BR2_LINUX_KERNEL_INSTALL_FIRMWARE is selected.  This allows parts of the
> firmware provided by the linux kernel to be installed in the target.
> 
> Signed-off-by: Spenser Gilliland <spenser@gillilanding.com>
> ---
>  linux/Config.in |  5 +++++
>  linux/linux.mk  | 13 +++++++++++++
>  2 files changed, 18 insertions(+)
> 
> diff --git a/linux/Config.in b/linux/Config.in
> index f58e714..b733019 100644
> --- a/linux/Config.in
> +++ b/linux/Config.in
> @@ -297,6 +297,11 @@ config BR2_LINUX_KERNEL_INSTALL_TARGET
>  	  /boot in the target root filesystem, as is typically done on
>  	  x86/x86_64 systems.
>  
> +# This option is used to install firmware to staging. Other packages such as
> +# beagle-capes then install the firmware into the target. This avoids
> +# installing all linux firmware.

I would also states that this applies to special firmware files that are
*not* distributed with the linux-firmware package. All 'standard'
firmwares should be installed via linux-firmware. This knob is for very
special cases such as the BBB capes. Waht about:

# This option can be selected by other packages that require special
# firmwares bundled in some fiorks of the Linux kernell (eg. the BBB
# capes firmwares (.dtbo) as distributed in the TI Linux kernel fork).
# To install other firmwares, please use the linux-firmware package.

> +config BR2_LINUX_KERNEL_INSTALL_FIRMWARE
> +	bool
>  
>  # Linux extensions
>  source "linux/Config.ext.in"
> diff --git a/linux/linux.mk b/linux/linux.mk
> index befef16..88c954d 100644
> --- a/linux/linux.mk
> +++ b/linux/linux.mk
> @@ -256,6 +256,15 @@ define LINUX_INSTALL_KERNEL_IMAGE_TO_TARGET
>  endef
>  endif
>  
> +ifeq ($(BR2_LINUX_KERNEL_INSTALL_FIRMWARE),y)
> +
> +LINUX_INSTALL_STAGING = YES
> +
> +define LINUX_INSTALL_FIRMWARE_TO_STAGING
> +	$(TARGET_MAKE_ENV) $(MAKE) $(LINUX_MAKE_FLAGS) -C $(@D) firmware_install \
> +		INSTALL_FW_PATH=$(STAGING_DIR)/lib/firmware/
> +endef
> +endif
>  
>  define LINUX_INSTALL_HOST_TOOLS
>  	# Installing dtc (device tree compiler) as host tool, if selected
> @@ -269,6 +278,10 @@ define LINUX_INSTALL_IMAGES_CMDS
>  	cp $(LINUX_IMAGE_PATH) $(BINARIES_DIR)
>  endef
>  
> +define LINUX_INSTALL_STAGING_CMDS
> +	$(LINUX_INSTALL_FIRMWARE_TO_STAGING)
> +endef
> +
>  define LINUX_INSTALL_TARGET_CMDS
>  	$(LINUX_INSTALL_KERNEL_IMAGE_TO_TARGET)
>  	$(LINUX_INSTALL_DTB)

Otherwise, LGTM.

Peter, Thomas, what do you thiink of this scheme? Should we puruse this
series, or do you have a better idea?

Regards,
Yann E. MORIN.

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