[Buildroot] [PATCH v4 1/1] boot/uboot/uboot.mk: add pmufw.elf support

[Neal Frager]

This patch adds support for zynqmp pmufw.elf files.
It will allow buildroot to use pmufw.elf binaries directly
from the Xilinx git repository built by petalinux in
addition to still supporting pmufw.bin binaries built
by the zynqmp-pmufw-builder.

https://github.com/Xilinx/ubuntu-firmware/tree/v2022.1_22.04_1/xlnx-firmware

Signed-off-by: Neal Frager <neal.frager at amd.com>
---
V1->V2:
  - corrected objcopy instruction for converting elf to bin
V2->V3:
  - removed unnecessary spaces
  - simplified if statement to check for a pmufw.elf file
V3->V4:
  - added spaces around = sign of UBOOT_ZYNQMP_PMUFW_BASENAME definition
---
 boot/uboot/uboot.mk | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/boot/uboot/uboot.mk b/boot/uboot/uboot.mk
index a9f9b1bf16..0439ec5e4b 100644
--- a/boot/uboot/uboot.mk
+++ b/boot/uboot/uboot.mk
@@ -391,9 +391,12 @@ UBOOT_ZYNQMP_PMUFW_PATH = $(UBOOT_DL_DIR)/$(notdir $(UBOOT_ZYNQMP_PMUFW))
 else ifneq ($(UBOOT_ZYNQMP_PMUFW),)
 UBOOT_ZYNQMP_PMUFW_PATH = $(shell readlink -f $(UBOOT_ZYNQMP_PMUFW))
 endif
+UBOOT_ZYNQMP_PMUFW_BASENAME = $(basename $(UBOOT_ZYNQMP_PMUFW_PATH))
 
 define UBOOT_ZYNQMP_KCONFIG_PMUFW
-	$(call KCONFIG_SET_OPT,CONFIG_PMUFW_INIT_FILE,"$(UBOOT_ZYNQMP_PMUFW_PATH)")
+	$(if $(filter %.elf,$(UBOOT_ZYNQMP_PMUFW_PATH)),
+		objcopy -O binary -I elf32-little $(UBOOT_ZYNQMP_PMUFW_BASENAME).elf $(UBOOT_ZYNQMP_PMUFW_BASENAME).bin)
+	$(call KCONFIG_SET_OPT,CONFIG_PMUFW_INIT_FILE,"$(UBOOT_ZYNQMP_PMUFW_BASENAME).bin")
 endef
 
 UBOOT_ZYNQMP_PM_CFG = $(call qstrip,$(BR2_TARGET_UBOOT_ZYNQMP_PM_CFG))
-- 
2.17.1