Re: [Buildroot] [PATCH v3] boot/uboot: copy IMX firmware files to uboot package dir

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

Heiko, All,

On 2021-09-12 07:09 +0200, Heiko Thiery spake thusly:
> The mainline U-Boot can create an i.MX specific firmware image (e.g. flash.bin).
> For this the i.MX firmware files (DDR, HDMI) must be in the toplevel directory.
> 
> Signed-off-by: Heiko Thiery <heiko.thiery@gmail.com>
> Reviewed-by: Fabio Estevam <festevam@gmail.com>
> ---
> 
> v3:
>  - included the comments from Fabio
>  - add Fabio's SOB
> 
> v2:
>  - small changes in commit messages (thanks Stephane)
>  - use "i.MX 8M" for consistency (thanks Stephane)
> 
>  boot/uboot/Config.in | 11 +++++++++++
>  boot/uboot/uboot.mk  | 27 +++++++++++++++++++++++++++
>  2 files changed, 38 insertions(+)
> 
> diff --git a/boot/uboot/Config.in b/boot/uboot/Config.in
> index 0854fb13cc..8cc40cd9c5 100644
> --- a/boot/uboot/Config.in
> +++ b/boot/uboot/Config.in
> @@ -239,6 +239,17 @@ config BR2_TARGET_UBOOT_NEEDS_OPENSBI
>  	  and that the OpenSBI variable pointing to OpenSBI binary,
>  	  is passed during the Buildroot build.
>  
> +config BR2_TARGET_UBOOT_NEEDS_IMX_FIRMWARE
> +	bool "U-Boot needs firmware-imx"
> +	depends on BR2_PACKAGE_FIRMWARE_IMX
> +	depends on BR2_PACKAGE_FIRMWARE_IMX_NEEDS_DDR_FW || \
> +		BR2_PACKAGE_FIRMWARE_IMX_NEEDS_HDMI_FW
> +	help
> +	  Some i.MX8 platforms (such as i.MX8 M, i.MX 8M Mini, i.MX 8M Nano)
> +	  encapsulate NXP specific firmware (DDR, HDMI) inside U-Boot.
> +	  This option makes sure that the i.MX firmwares are copied into
> +	  the U-Boot source directory.
> +
>  menu "U-Boot binary format"
>  
>  config BR2_TARGET_UBOOT_FORMAT_AIS
> diff --git a/boot/uboot/uboot.mk b/boot/uboot/uboot.mk
> index 1a840d9cc1..a446830c6f 100644
> --- a/boot/uboot/uboot.mk
> +++ b/boot/uboot/uboot.mk
> @@ -180,6 +180,33 @@ UBOOT_DEPENDENCIES += opensbi
>  UBOOT_MAKE_OPTS += OPENSBI=$(BINARIES_DIR)/fw_dynamic.bin
>  endif
>  
> +# Mainline U-Boot versions can create the i.MX specific boot images
> +# and need some NXP firmware blobs.
> +ifeq ($(BR2_TARGET_UBOOT_NEEDS_IMX_FIRMWARE),y)
> +UBOOT_DEPENDENCIES += firmware-imx
> +
> +ifeq ($(BR2_PACKAGE_FIRMWARE_IMX_NEEDS_HDMI_FW),y)
> +define UBOOT_COPY_IMX_DDR_FIRMWARE
> +	cp $(BINARIES_DIR)/signed_hdmi_imx8m.bin $(@D)/
> +endef
> +UBOOT_PRE_BUILD_HOOKS += UBOOT_COPY_IMX_DDR_FIRMWARE
> +endif
> +
> +ifeq ($(BR2_PACKAGE_FIRMWARE_IMX_LPDDR4),y)
> +define UBOOT_COPY_IMX_LPDDR4_FIRMWARE
> +	cp $(BINARIES_DIR)/lpddr4*.bin $(@D)/
> +endef
> +UBOOT_PRE_BUILD_HOOKS += UBOOT_COPY_IMX_LPDDR4_FIRMWARE
> +endif
> +
> +ifeq ($(BR2_PACKAGE_FIRMWARE_IMX_DDR4),y)
> +define UBOOT_COPY_IMX_DDR4_FIRMWARE
> +	cp $(BINARIES_DIR)/ddr4*.bin $(@D)/
> +endef
> +UBOOT_PRE_BUILD_HOOKS += UBOOT_COPY_IMX_DDR4_FIRMWARE
> +endif
> +endif

I've changed that to a simpler hook:

  185 ifeq ($(BR2_TARGET_UBOOT_NEEDS_IMX_FIRMWARE),y)
  186 UBOOT_DEPENDENCIES += firmware-imx
  187 UBOOT_IMX_FW_FILES = \
  188     $(if $(BR2_PACKAGE_FIRMWARE_IMX_NEEDS_HDMI_FW),signed_hdmi_imx8m.bin) \
  189     $(if $(BR2_PACKAGE_FIRMWARE_IMX_LPDDR4),lpddr4*.bin) \
  190     $(if $(BR2_PACKAGE_FIRMWARE_IMX_DDR4),ddr4*.bin)
  191
  192 define UBOOT_COPY_IMX_FW_FILES
  193     $(foreach fw,$(UBOOT_IMX_FW_FILES),\
  194         cp $(BINARIES_DIR)/$(fw) $(@D)/
  195     )
  196 endef
  197 UBOOT_PRE_BUILD_HOOKS += UBOOT_COPY_IMX_DDR_FIRMWARE
  198 endif

Applied to master with this change, thanks.

Regards,
Yann E. MORIN.

>  ifeq ($(BR2_TARGET_UBOOT_NEEDS_DTC),y)
>  UBOOT_DEPENDENCIES += host-dtc
>  endif
> -- 
> 2.20.1
> 
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> buildroot@lists.buildroot.org
> https://lists.buildroot.org/mailman/listinfo/buildroot

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