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dts: Makefile: support provide a minimum SPL DTB 

Some boards need a SPL DTB as smaller as possible to save dm scan
time and space. It provides a SPL DTB only include the node with
property "u-boot,dm-spl". The property "u-boot,pre-reloc" doesn't
work any more.

This feature is disabled by default to compatible current boards,
only the board really cares about boot time needs it.

Fix "/chosen" is deleted for TPL DTB.

Signed-off-by: Joseph Chen <chenjh@rock-chips.com>
Change-Id: I743d7b734daff6e0508e01f534078663d809952f
This commit is contained in:
Joseph Chen 2020-02-17 19:23:23 +08:00 committed by Jianhong Chen
parent fcdd83d445
commit 4447bf1624
2 changed files with 23 additions and 1 deletions
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10
dts/Kconfig
View File

@ -47,6 +47,16 @@ config SPL_OF_CONTROL
which is not enough to support device tree. Enable this option to
allow such boards to be supported by U-Boot SPL.
config SPL_DTB_MINIMUM
bool "Provide a minimum SPL DTB "
depends on SPL_OF_CONTROL
default n
help
Some boards need a SPL DTB as smaller as possible to save dm scan
time and space. It provides a SPL DTB only include the node with
property "u-boot,dm-spl". The property "u-boot,pre-reloc" doesn't
work any more.
config TPL_OF_CONTROL
bool "Enable run-time configuration via Device Tree in TPL"
depends on TPL && OF_CONTROL

14
dts/Makefile
View File

@ -41,15 +41,27 @@ quiet_cmd_fdtgrep = FDTGREP $@
fdtgrep_tpl_props := -b u-boot,dm-pre-reloc -b u-boot,dm-tpl
quiet_cmd_fdtgrep_tpl = FDTGREP $@
cmd_fdtgrep_tpl = $(objtree)/tools/fdtgrep $(fdtgrep_tpl_props) -RT $< \
-n /config -O dtb | \
-n /chosen -n config -O dtb | \
$(objtree)/tools/fdtgrep -r -O dtb - -o $@ \
$(addprefix -P ,$(subst $\",,$(CONFIG_OF_SPL_REMOVE_PROPS)))
fdtgrep_spl_minimum_props := -b u-boot,dm-spl
quiet_cmd_fdtgrep_spl_minimum = FDTGREP $@
cmd_fdtgrep_spl_minimum = $(objtree)/tools/fdtgrep $(fdtgrep_spl_minimum_props) -RT $< \
-n /chosen -n config -O dtb | \
$(objtree)/tools/fdtgrep -r -O dtb - -o $@ \
$(addprefix -P ,$(subst $\",,$(CONFIG_OF_SPL_REMOVE_PROPS)))
$(obj)/dt-tpl.dtb: $(DTB) $(objtree)/tools/fdtgrep FORCE
$(call if_changed,fdtgrep_tpl)
ifeq ($(CONFIG_SPL_DTB_MINIMUM),y)
$(obj)/dt-spl.dtb: $(DTB) $(objtree)/tools/fdtgrep FORCE
$(call if_changed,fdtgrep_spl_minimum)
else
$(obj)/dt-spl.dtb: $(DTB) $(objtree)/tools/fdtgrep FORCE
$(call if_changed,fdtgrep)
endif
ifeq ($(CONFIG_USING_KERNEL_DTB),y)
$(obj)/dt.dtb: $(DTB) $(objtree)/tools/fdtgrep FORCE