[Buildroot] [PATCH v3 1/2] uboot: Add support for U-Boot TPL
Thomas Petazzoni
thomas.petazzoni at free-electrons.com
Wed Nov 15 22:15:11 UTC 2017
Hello Jagan,
On Tue, 14 Nov 2017 13:57:05 +0100, Jagan Teki wrote:
> +config BR2_TARGET_UBOOT_TPL
> + bool "Install U-Boot TPL binary image"
> + depends on BR2_TARGET_UBOOT_SPL
> + help
> + Install the U-Boot TPL binary image to the images
> + directory.
> + TPL is first stage bootloader, On rk3288 vyasa board due to size
> + limitation on SPL.
> +
> + Since the size of SPL can't be exceeded 0x8000 bytes in RK3288,
> + it is not possible add new SPL features like Falcon mode or etc.
> +
> + So add TPL stage so-that adding new features to SPL is possible.
> + - TPL: DRAM init, clocks
> + - SPL: MMC, falcon, etc
> +
> +config BR2_TARGET_UBOOT_TPL_NAME
> + string "U-Boot TPL binary image name"
> + default "tpl/u-boot-tpl.bin"
> + depends on BR2_TARGET_UBOOT_TPL
> + help
> + A space-separated list of TPL binaries, generated during
> + u-boot build. For most platform it is spl/u-boot-tpl.bin but
> + not always.
> +
> config BR2_TARGET_UBOOT_ZYNQ_IMAGE
> bool "Generate image for Xilinx Zynq"
> depends on BR2_arm
> diff --git a/boot/uboot/uboot.mk b/boot/uboot/uboot.mk
> index fdacf16..5702ca6 100644
> --- a/boot/uboot/uboot.mk
> +++ b/boot/uboot/uboot.mk
> @@ -242,6 +242,11 @@ define UBOOT_INSTALL_IMAGES_CMDS
> cp -dpf $(@D)/$(f) $(BINARIES_DIR)/
> )
> )
> + $(if $(BR2_TARGET_UBOOT_TPL),
> + $(foreach f,$(call qstrip,$(BR2_TARGET_UBOOT_TPL_NAME)), \
> + cp -dpf $(@D)/$(f) $(BINARIES_DIR)/
> + )
> + )
I don't think we need this additional option. Just list the TPL name
within the BR2_TARGET_UBOOT_SPL_NAME option (this option accepts a
space-separated list of binaries).
Of course, the Config.in help text of BR2_TARGET_UBOOT_SPL_NAME could
be updated to indicate that both SPL and TPL can be specified with this
option.
Best regards,
Thomas
--
Thomas Petazzoni, CTO, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com
More information about the buildroot
mailing list