boot/arm-trusted-firmware: add target board options

Some platforms such as TI's k3 outputs a TARGET_BOARD directory
in their ATF build output paths after PLATFORM.
$(@D)/build/<PLATFORM>/ does not contain the debug or release
directories for these platforms.
They are under $(@D)/build/<PLATFORM>/<TARGET_BOARD>/

Signed-off-by: Xuanhao Shi <x-shi@ti.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

boot/arm-trusted-firmware/Config.in

@@ -68,6 +68,12 @@ config BR2_TARGET_ARM_TRUSTED_FIRMWARE_PLATFORM
 	help
 	  Target plaform to build for.
 
+config BR2_TARGET_ARM_TRUSTED_FIRMWARE_TARGET_BOARD
+	string "ATF target board"
+	help
+	  Target board to build for. In many cases, this can be left
+	  empty.
+
 config BR2_TARGET_ARM_TRUSTED_FIRMWARE_CUSTOM_DTS_PATH
 	string "Device Tree Source file paths"
 	help

boot/arm-trusted-firmware/arm-trusted-firmware.mk

@@ -41,18 +41,29 @@ endif
 
 ARM_TRUSTED_FIRMWARE_PLATFORM = $(call qstrip,$(BR2_TARGET_ARM_TRUSTED_FIRMWARE_PLATFORM))
 
+ARM_TRUSTED_FIRMWARE_TARGET_BOARD = $(call qstrip,$(BR2_TARGET_ARM_TRUSTED_FIRMWARE_TARGET_BOARD))
+
 ifeq ($(BR2_TARGET_ARM_TRUSTED_FIRMWARE_DEBUG),y)
 ARM_TRUSTED_FIRMWARE_MAKE_OPTS += DEBUG=1
+ifneq ($(ARM_TRUSTED_FIRMWARE_TARGET_BOARD),)
+ARM_TRUSTED_FIRMWARE_IMG_DIR = $(@D)/build/$(ARM_TRUSTED_FIRMWARE_PLATFORM)/$(ARM_TRUSTED_FIRMWARE_TARGET_BOARD)/debug
+else
 ARM_TRUSTED_FIRMWARE_IMG_DIR = $(@D)/build/$(ARM_TRUSTED_FIRMWARE_PLATFORM)/debug
+endif
+else
+ifneq ($(ARM_TRUSTED_FIRMWARE_TARGET_BOARD),)
+ARM_TRUSTED_FIRMWARE_IMG_DIR = $(@D)/build/$(ARM_TRUSTED_FIRMWARE_PLATFORM)/$(ARM_TRUSTED_FIRMWARE_TARGET_BOARD)/release
 else
 ARM_TRUSTED_FIRMWARE_IMG_DIR = $(@D)/build/$(ARM_TRUSTED_FIRMWARE_PLATFORM)/release
 endif
+endif
 
 ARM_TRUSTED_FIRMWARE_MAKE_OPTS += \
 	CROSS_COMPILE="$(TARGET_CROSS)" \
 	$(if $(BR2_PIC_PIE),CFLAGS="-fno-PIE") \
 	$(call qstrip,$(BR2_TARGET_ARM_TRUSTED_FIRMWARE_ADDITIONAL_VARIABLES)) \
-	PLAT=$(ARM_TRUSTED_FIRMWARE_PLATFORM)
+	PLAT=$(ARM_TRUSTED_FIRMWARE_PLATFORM) \
+	TARGET_BOARD=$(ARM_TRUSTED_FIRMWARE_TARGET_BOARD)
 
 ARM_TRUSTED_FIRMWARE_MAKE_ENV += \
 	$(TARGET_MAKE_ENV) \