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spl: Add a way to specify a list of device trees to include 

When building a FIT, more than one device tree can be included. The board
can select (at run-time) the one that it wants.

Add a Kconfig option to allow the list of devices trees (supported by the
board) to be specified.

When using SPL_LOAD_FIT, build u-boot.img in FIT format instead of the
legacy image format. Include all the listed device tree files in this FIT.

Signed-off-by: Simon Glass <sjg@chromium.org>
utp
Simon Glass 2016-02-22 22:55:57 -07:00 committed by Tom Rini
parent f1dcee59a2
commit cdf172461c
2 changed files with 19 additions and 1 deletions
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10
Makefile
View File

@ -893,9 +893,16 @@ quiet_cmd_cpp_cfg = CFG $@
cmd_cpp_cfg = $(CPP) -Wp,-MD,$(depfile) $(cpp_flags) $(LDPPFLAGS) -ansi \
-DDO_DEPS_ONLY -D__ASSEMBLY__ -x assembler-with-cpp -P -dM -E -o $@ $<
ifdef CONFIG_SPL_LOAD_FIT
MKIMAGEFLAGS_u-boot.img = -f auto -A $(ARCH) -T firmware -C none -O u-boot \
-a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
-n "U-Boot $(UBOOTRELEASE) for $(BOARD) board" -E \
-b $(patsubst %,arch/$(ARCH)/dts/%.dtb,$(subst ",,$(CONFIG_OF_LIST)))
else
MKIMAGEFLAGS_u-boot.img = -A $(ARCH) -T firmware -C none -O u-boot \
-a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
-n "U-Boot $(UBOOTRELEASE) for $(BOARD) board"
endif
MKIMAGEFLAGS_u-boot-dtb.img = $(MKIMAGEFLAGS_u-boot.img)
@ -908,7 +915,8 @@ MKIMAGEFLAGS_u-boot-spl.kwb = -n $(srctree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%) \
MKIMAGEFLAGS_u-boot.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \
-R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -T pblimage
u-boot-dtb.img u-boot.img u-boot.kwb u-boot.pbl: u-boot.bin FORCE
u-boot-dtb.img u-boot.img u-boot.kwb u-boot.pbl: \
$(if $(CONFIG_SPL_LOAD_FIT),u-boot-nodtb.bin dts/dt.dtb,u-boot.bin) FORCE
$(call if_changed,mkimage)
u-boot-spl.kwb: u-boot.img spl/u-boot-spl.bin FORCE

10
dts/Kconfig
View File

@ -59,6 +59,16 @@ config DEFAULT_DEVICE_TREE
It can be overridden from the command line:
$ make DEVICE_TREE=<device-tree-name>
config OF_LIST
string "List of device tree files to include for DT control"
depends on SPL_LOAD_FIT
help
This option specifies a list of device tree files to use for DT
control. These will be packaged into a FIT. At run-time, SPL will
select the correct DT to use by examining the hardware (e.g.
reading a board ID value). This is a list of device tree files
(without the directory or .dtb suffix) separated by <space>.
config OF_SPL_REMOVE_PROPS
string "List of device tree properties to drop for SPL"
depends on SPL_OF_CONTROL