kbuild: SPL/TPL: generate separate asm-offsets.h for SPL and TPL
Currently generic-asm-offsets.h and asm-offsets.h are generated based
on U-Boot proper config options. The same asm-offsets headers are used
for building U-Boot SPL/TPL, which causes potential offset mismatch if
U-Boot proper has different config options from U-Boot SPL/TPL.
This commit adds:
spl/include/generated/(generic-)asm-offsets.h
tpl/include/generated/(generic-)asm-offsets.h
spl/include/generated/(generic-)asm-offsets.h is generated if
CONFIG_SPL=y, and included when building SPL.
tpl/include/generated/(generic-)asm-offsets.h is generated if
CONFIG_TPL=y, and included when building TPL.
They are created before Kbuild descends into SPL/TPL object directories
and builds $(obj)/dts/dt-platdata.o because $(obj)/dts/dt-platdata.c
includes a bunch of headers.
Prepend -I$(obj)/include to $(UBOOTINCLUDE) so (generic-)asm-offsets.h
is searched in {spl,tpl}/include/generated/.
Requested-by: Bin Meng <bmeng.cn@gmail.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/Kbuild b/Kbuild
index 6014f7c..1eac091 100644
--- a/Kbuild
+++ b/Kbuild
@@ -10,7 +10,7 @@
always := $(generic-offsets-file)
targets := lib/asm-offsets.s
-$(obj)/$(generic-offsets-file): lib/asm-offsets.s FORCE
+$(obj)/$(generic-offsets-file): $(obj)/lib/asm-offsets.s FORCE
$(call filechk,offsets,__GENERIC_ASM_OFFSETS_H__)
#####
@@ -25,5 +25,5 @@
CFLAGS_asm-offsets.o := -DDO_DEPS_ONLY
-$(obj)/$(offsets-file): arch/$(ARCH)/lib/asm-offsets.s FORCE
+$(obj)/$(offsets-file): $(obj)/arch/$(ARCH)/lib/asm-offsets.s FORCE
$(call filechk,offsets,__ASM_OFFSETS_H__)