boot/uboot: Add support for Rockchip binary blobs

Currently for some Rockchip SoCs binary blobs are needed, e.g., for
the RK3588 bl31 and tpl. These blobs are provided by Rockchip. This
patch adds U-Boot package options to use theses binaries, provided
by the rockchip-rkbin package, which is also introduced in this
patch series. The U-Boot package is modified so that it takes the
chosen binaries and automatically uses them during build.

Signed-off-by: Kilian Zinnecker <kilian.zinnecker@mail.de>
[yann.morin.1998@free.fr:
  - use already-qstripped variables from rockchip-rkbin
]
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

boot/uboot/Config.in

@@ -262,6 +262,15 @@ config BR2_TARGET_UBOOT_NEEDS_IMX_FIRMWARE
 	  This option makes sure that the i.MX firmwares are copied into
 	  the U-Boot source directory.
 
+config BR2_TARGET_UBOOT_NEEDS_ROCKCHIP_RKBIN
+	bool "U-Boot needs rockchip-rkbin"
+	depends on BR2_PACKAGE_ROCKCHIP_RKBIN
+	help
+	  For some Rockchip SoCs U-Boot needs binary blobs from
+	  Rockchip.
+	  This option makes sure that the needed binary blobs are copied
+	  into the U-Boot source directory.
+
 menu "U-Boot binary format"
 
 config BR2_TARGET_UBOOT_FORMAT_AIS

boot/uboot/uboot.mk

@@ -209,6 +209,23 @@ endef
 UBOOT_PRE_BUILD_HOOKS += UBOOT_COPY_IMX_FW_FILES
 endif
 
+ifeq ($(BR2_TARGET_UBOOT_NEEDS_ROCKCHIP_RKBIN),y)
+UBOOT_DEPENDENCIES += rockchip-rkbin
+define UBOOT_INSTALL_UBOOT_ROCKCHIP_BIN
+	$(INSTALL) -D -m 0644 $(@D)/u-boot-rockchip.bin $(BINARIES_DIR)/u-boot-rockchip.bin
+endef
+UBOOT_POST_INSTALL_IMAGES_HOOKS += UBOOT_INSTALL_UBOOT_ROCKCHIP_BIN
+ifneq ($(ROCKCHIP_RKBIN_BL31_FILENAME),)
+UBOOT_MAKE_OPTS += BL31=$(BINARIES_DIR)/$(notdir $(ROCKCHIP_RKBIN_BL31_FILENAME))
+endif
+ifneq ($(ROCKCHIP_RKBIN_TPL_FILENAME),)
+UBOOT_MAKE_OPTS += ROCKCHIP_TPL=$(BINARIES_DIR)/$(notdir $(ROCKCHIP_RKBIN_TPL_FILENAME))
+endif
+ifneq ($(ROCKCHIP_RKBIN_TEE_FILENAME),)
+UBOOT_MAKE_OPTS += TEE=$(BINARIES_DIR)/$(notdir $(ROCKCHIP_RKBIN_TEE_FILENAME))
+endif
+endif
+
 ifeq ($(BR2_TARGET_UBOOT_NEEDS_DTC),y)
 UBOOT_DEPENDENCIES += host-dtc
 UBOOT_MAKE_OPTS += DTC=$(HOST_DIR)/bin/dtc