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Makefile: Allow padding zeros when converting DTB to C source

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We extend d2c.sh to allow padding zeros in output C source when
converting DTB to C source. Using this feature, platforms can
create extra room for in-place FDT fixups on built-in DTBs.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
This commit is contained in:
Heinrich Schuchardt
2020-10-14 22:05:31 +05:30
committed by Anup Patel
parent 9c07c513aa
commit e9a4bfb7b5
2 changed files with 13 additions and 3 deletions
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7
Makefile
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@@ -291,7 +291,10 @@ compile_dts = $(CMD_PREFIX)mkdir -p `dirname $(1)`; \
$(CPP) $(DTSCPPFLAGS) $(2) | $(DTC) -O dtb -i `dirname $(2)` -o $(1)
compile_d2c = $(CMD_PREFIX)mkdir -p `dirname $(1)`; \
echo " D2C $(subst $(build_dir)/,,$(1))"; \
$(src_dir)/scripts/d2c.sh -i $(4) -a $(3) -p $(2) > $(1)
$(if $($(2)-varalign-$(3)),$(eval D2C_ALIGN_BYTES := $($(2)-varalign-$(3))),$(eval D2C_ALIGN_BYTES := $(4))) \
$(if $($(2)-varprefix-$(3)),$(eval D2C_NAME_PREFIX := $($(2)-varprefix-$(3))),$(eval D2C_NAME_PREFIX := $(5))) \
$(if $($(2)-padding-$(3)),$(eval D2C_PADDING_BYTES := $($(2)-padding-$(3))),$(eval D2C_PADDING_BYTES := 0)) \
$(src_dir)/scripts/d2c.sh -i $(6) -a $(D2C_ALIGN_BYTES) -p $(D2C_NAME_PREFIX) -t $(D2C_PADDING_BYTES) > $(1)
compile_gen_dep = $(CMD_PREFIX)mkdir -p `dirname $(1)`; \
echo " GEN-DEP $(subst $(build_dir)/,,$(1))"; \
echo "$(1:.dep=$(2)): $(3)" >> $(1)
@@ -361,7 +364,7 @@ $(platform_build_dir)/%.dep: $(platform_src_dir)/%.dts
$(call compile_gen_dep,$@,.o,$(@:.dep=.c))
$(platform_build_dir)/%.c: $(platform_build_dir)/%.dtb
$(call compile_d2c,$@,$(platform-varprefix-$(subst .dtb,.o,$(subst /,-,$(subst $(platform_build_dir)/,,$<)))),16,$<)
$(call compile_d2c,$@,platform,$(subst .dtb,.o,$(subst /,-,$(subst $(platform_build_dir)/,,$<))),16,dt,$<)
$(platform_build_dir)/%.dtb: $(platform_src_dir)/%.dts
$(call compile_dts,$@,$<)