From: Luca Ceresoli Date: Wed, 25 Jul 2018 14:35:36 +0000 (+0200) Subject: uboot: zynqmp: generate SPL image with PMUFW binary X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=e865a1f03c7c68b711a2d754cf8ffa3a168082b2;p=buildroot.git uboot: zynqmp: generate SPL image with PMUFW binary In order to boot on the Xilinx ZynqMP SoCs, U-Boot SPL requires a recent PMU firmware loaded. Instruct U-Boot to add pmufw.bin to the boot.bin file together with U-Boot SPL, and the boot ROM will load both. For this to work properly, a patch to U-Boot is needed. However this patch must be applied by each defconfig that wishes to use BR2_TARGET_UBOOT_ZYNQMP_PMUFW. If it were in boot/uboot/ to be applied unconditionally, it would break the build for configs using a U-Boot version higher than 2018.7-rc1 where the patch is already applied. Signed-off-by: Luca Ceresoli Cc: Joel Carlson Reviewed-by: Joel Carlson Tested-by: Joel Carlson [Thomas: - indicate that this feature requires U-Boot 2018.07, since commit c7df098a71e05dc81cee818747759e8060b59626 is needed. - define UBOOT_ZYNQMP_KCONFIG_PMUFW only once, and instead use a variable named UBOOT_ZYNQMP_PMUFW_PATH to store the path to the PMU firmware] Signed-off-by: Thomas Petazzoni --- diff --git a/board/zynqmp/patches/uboot/0003-arm64-zynqmp-accept-an-absolute-path-for-PMUFW_INIT_.patch b/board/zynqmp/patches/uboot/0003-arm64-zynqmp-accept-an-absolute-path-for-PMUFW_INIT_.patch new file mode 100644 index 0000000000..95ab7b3b75 --- /dev/null +++ b/board/zynqmp/patches/uboot/0003-arm64-zynqmp-accept-an-absolute-path-for-PMUFW_INIT_.patch @@ -0,0 +1,68 @@ +From c7df098a71e05dc81cee818747759e8060b59626 Mon Sep 17 00:00:00 2001 +From: Luca Ceresoli +Date: Mon, 4 Jun 2018 12:21:01 +0200 +Subject: [PATCH] arm64: zynqmp: accept an absolute path for PMUFW_INIT_FILE + +The value of PMUFW_INIT_FILE is prefixed with "$(srctree)/", thus +forcing it to be a relative path inside the U-Boot source tree. Since +the PMUFW is a binary file generated outside of U-Boot, the PMUFW +binary must be copied inside the U-Boot source tree before the +build. + +This generates a few problems: + + * if the source tree is shared among different out-of-tree builds, + they will pollute (and potentially corrupt) each other + * the source tree cannot be read-only + * any buildsystem must add a command to copy the PMUFW binary + * putting an externally-generated binary in the source tree is ugly + as hell + +Avoid these problems by accepting an absolute path for +PMUFW_INIT_FILE. This would be as simple as removing the "$(srctree)/" +prefix, but in order to keep backward compatibility we rather use the +shell and readlink to get the absolute path even when starting from a +relative path. + +Since 'readlink -f' produces an empty string if the file does not +exist, we also add a check to ensure the file configured in +PMUFW_INIT_FILE exists. Otherwise the build would exit successfully, +but produce a boot.bin without PMUFW as if PMUFW_INIT_FILE were empty. + +Tested in the 12 possible combinations of: + - PMUFW_INIT_FILE empty, relative, absolute, non-existing + - building in-tree, in subdir, in other directory + +Signed-off-by: Luca Ceresoli +Cc: Michal Simek +Cc: Simon Glass +Cc: Emmanuel Vadot +Signed-off-by: Michal Simek +Backported from upstream: https://git.denx.de/?p=u-boot.git;a=commit;h=c7df098a71e05dc81cee818747759e8060b59626 +--- + scripts/Makefile.spl | 8 +++++++- + 1 file changed, 7 insertions(+), 1 deletion(-) + +diff --git a/scripts/Makefile.spl b/scripts/Makefile.spl +index ef018b5b4056..252f13826d4c 100644 +--- a/scripts/Makefile.spl ++++ b/scripts/Makefile.spl +@@ -167,8 +167,14 @@ ifdef CONFIG_ARCH_ZYNQ + MKIMAGEFLAGS_boot.bin = -T zynqimage -R $(srctree)/$(CONFIG_BOOT_INIT_FILE) + endif + ifdef CONFIG_ARCH_ZYNQMP ++ifneq ($(CONFIG_PMUFW_INIT_FILE),"") ++spl/boot.bin: zynqmp-check-pmufw ++zynqmp-check-pmufw: FORCE ++ ( cd $(srctree) && test -r $(CONFIG_PMUFW_INIT_FILE) ) \ ++ || ( echo "Cannot read $(CONFIG_PMUFW_INIT_FILE)" && false ) ++endif + MKIMAGEFLAGS_boot.bin = -T zynqmpimage -R $(srctree)/$(CONFIG_BOOT_INIT_FILE) \ +- -n $(srctree)/$(CONFIG_PMUFW_INIT_FILE) ++ -n "$(shell cd $(srctree); readlink -f $(CONFIG_PMUFW_INIT_FILE))" + endif + + spl/boot.bin: $(obj)/u-boot-spl.bin FORCE +-- +2.7.4 + diff --git a/boot/uboot/Config.in b/boot/uboot/Config.in index f0166e382b..124991d20b 100644 --- a/boot/uboot/Config.in +++ b/boot/uboot/Config.in @@ -368,6 +368,37 @@ config BR2_TARGET_UBOOT_ZYNQ_IMAGE for u-boot-dtb.img file so this U-Boot format is required to be set. +config BR2_TARGET_UBOOT_ZYNQMP + bool "Boot on the Xilinx ZynqMP SoCs" + depends on BR2_aarch64 + help + Enable options specific to the Xilinx ZynqMP family of SoCs. + +if BR2_TARGET_UBOOT_ZYNQMP + +config BR2_TARGET_UBOOT_ZYNQMP_PMUFW + string "PMU firmware location" + depends on BR2_TARGET_UBOOT_BUILD_SYSTEM_KCONFIG + help + Location of a PMU firmware binary. + + If not empty, instructs the U-Boot build process to generate + a boot.bin (to be loaded by the ZynqMP boot ROM) containing + both the U-Boot SPL and the PMU firmware in the + Xilinx-specific boot format. + + The value can be an absolute or relative path, and will be + used directly from where it is located, or an URI + (e.g. http://...), and it will be downloaded and used from + the download directory. + + If empty, the generated boot.bin will not contain a PMU + firmware. + + This feature requires U-Boot >= 2018.07. + +endif + config BR2_TARGET_UBOOT_ALTERA_SOCFPGA_IMAGE_CRC bool "CRC image for Altera SoC FPGA (mkpimage)" depends on BR2_arm diff --git a/boot/uboot/uboot.mk b/boot/uboot/uboot.mk index bf227f2893..d9c9b72e76 100644 --- a/boot/uboot/uboot.mk +++ b/boot/uboot/uboot.mk @@ -287,6 +287,25 @@ define UBOOT_INSTALL_IMAGES_CMDS $(BINARIES_DIR)/boot.scr) endef +ifeq ($(BR2_TARGET_UBOOT_ZYNQMP),y) + +UBOOT_ZYNQMP_PMUFW = $(call qstrip,$(BR2_TARGET_UBOOT_ZYNQMP_PMUFW)) + +ifneq ($(findstring ://,$(UBOOT_ZYNQMP_PMUFW)),) +UBOOT_EXTRA_DOWNLOADS += $(UBOOT_ZYNQMP_PMUFW) +BR_NO_CHECK_HASH_FOR += $(notdir $(UBOOT_ZYNQMP_PMUFW)) +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 + +define UBOOT_ZYNQMP_KCONFIG_PMUFW + $(call KCONFIG_SET_OPT,CONFIG_PMUFW_INIT_FILE,"$(UBOOT_ZYNQMP_PMUFW_PATH)", \ + $(@D)/.config) +endef + +endif # BR2_TARGET_UBOOT_ZYNQMP + define UBOOT_INSTALL_OMAP_IFT_IMAGE cp -dpf $(@D)/$(UBOOT_BIN_IFT) $(BINARIES_DIR)/ endef @@ -336,6 +355,10 @@ UBOOT_DEPENDENCIES += host-mkpimage UBOOT_POST_INSTALL_IMAGES_HOOKS += UBOOT_CRC_ALTERA_SOCFPGA_IMAGE endif +define UBOOT_KCONFIG_FIXUP_CMDS + $(UBOOT_ZYNQMP_KCONFIG_PMUFW) +endef + ifeq ($(BR2_TARGET_UBOOT_ENVIMAGE),y) ifeq ($(BR_BUILDING),y) ifeq ($(call qstrip,$(BR2_TARGET_UBOOT_ENVIMAGE_SOURCE)),)