acpi: Add an __ACPI__ preprocessor symbol
The ASL compiler cannot handle C structures and the like so needs some
sort of header guard around these.
We already have an __ASSEMBLY__ #define but it seems best to create a new
one for ACPI since the rules may be different.
Add the check to a few files that ACPI always includes.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com>
diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index 8decb0e..1c8cb74 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -437,8 +437,8 @@
quiet_cmd_acpi_c_asl= ASL $<
cmd_acpi_c_asl= \
- $(CPP) -x assembler-with-cpp -D__ASSEMBLY__ -P $(UBOOTINCLUDE) \
- -o $(ASL_TMP) $< && \
+ $(CPP) -x assembler-with-cpp -D__ASSEMBLY__ -D__ACPI__ \
+ -P $(UBOOTINCLUDE) -o $(ASL_TMP) $< && \
iasl -p $@ -tc $(ASL_TMP) $(if $(KBUILD_VERBOSE:1=), >/dev/null) && \
mv $(patsubst %.c,%.hex,$@) $@