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uboot: zynqmp: allow to use custom psu_init files

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U-Boot SPL configures pinmuxes, clocks and other low-level devices. On
the Xilinx ZynqMP SoCs the code to do this resides in a file called
psu_init_gpl.c which is initially generated by the Xilinx development
tools. Add an option to pass these files from the outside (e.g. in the
board files).

For this to work properly, a patch to U-Boot is needed. However this
patch must be applied by each defconfig using
BR2_TARGET_UBOOT_ZYNQMP_PSU_INIT_DIR. If it were in boot/uboot/ to be
applied unconditionally, it would break the build for configs using a
U-Boot version where the patch is already applied.

Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net>
Cc: Joel Carlson <joelsoncarl@gmail.com>
Reviewed-by: Joel Carlson <JoelsonCarl@gmail.com>
Tested-by: Joel Carlson <JoelsonCarl@gmail.com>
[Thomas: add comment about U-Boot version requirements to use this
option.]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
This commit is contained in:
Luca Ceresoli
2018-07-25 16:35:38 +02:00
committed by Thomas Petazzoni
parent 86eecc4606
commit 822c34c301
3 changed files with 213 additions and 0 deletions
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27
boot/uboot/Config.in
View File

@@ -397,6 +397,33 @@ config BR2_TARGET_UBOOT_ZYNQMP_PMUFW
This feature requires U-Boot >= 2018.07.
config BR2_TARGET_UBOOT_ZYNQMP_PSU_INIT_FILE
string "Custom psu_init_gpl file"
depends on BR2_TARGET_UBOOT_BUILD_SYSTEM_KCONFIG
help
On ZynqMP the booloader is responsible for some basic
initializations, such as enabling peripherals and
configuring pinmuxes. The psu_init_gpl.c file (and,
optionally, psu_init_gpl.h) contains the code for such
initializations.
Although U-Boot contains psu_init_gpl.c files for some
boards, each of them describes only one specific
configuration. Users of a different board, or needing a
different configuration, can generate custom files using the
Xilinx development tools.
Set this variable to the path to your psu_init_gpl.c file
(e.g. "board/myboard/psu_init_gpl.c"). psu_init_gpl.h, if
needed, should be in the same directory. U-Boot will build
and link the user-provided file instead of the built-in one.
Leave empty to use the files provided by U-Boot.
This feature requires commit
6da4f67ad09cd8b311d77b2b04e557b7ef65b56c from upstream
U-Boot, available from versions after 2018.07.
endif
config BR2_TARGET_UBOOT_ALTERA_SOCFPGA_IMAGE_CRC

11
boot/uboot/uboot.mk
View File

@@ -304,6 +304,16 @@ define UBOOT_ZYNQMP_KCONFIG_PMUFW
$(@D)/.config)
endef
UBOOT_ZYNQMP_PSU_INIT = $(call qstrip,$(BR2_TARGET_UBOOT_ZYNQMP_PSU_INIT_FILE))
UBOOT_ZYNQMP_PSU_INIT_PATH = $(shell readlink -f $(UBOOT_ZYNQMP_PSU_INIT))
ifneq ($(UBOOT_ZYNQMP_PSU_INIT),)
define UBOOT_ZYNQMP_KCONFIG_PSU_INIT
$(call KCONFIG_SET_OPT,CONFIG_XILINX_PS_INIT_FILE,"$(UBOOT_ZYNQMP_PSU_INIT_PATH)", \
$(@D)/.config)
endef
endif
endif # BR2_TARGET_UBOOT_ZYNQMP
define UBOOT_INSTALL_OMAP_IFT_IMAGE
@@ -357,6 +367,7 @@ endif
define UBOOT_KCONFIG_FIXUP_CMDS
$(UBOOT_ZYNQMP_KCONFIG_PMUFW)
$(UBOOT_ZYNQMP_KCONFIG_PSU_INIT)
endef
ifeq ($(BR2_TARGET_UBOOT_ENVIMAGE),y)