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acpi: Add an __ACPI__ preprocessor symbol

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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>
This commit is contained in:
Simon Glass
2020-04-08 16:57:37 -06:00
committed by Bin Meng
parent 776cc20194
commit 89c2798f1f
3 changed files with 10 additions and 2 deletions
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4
scripts/Makefile.lib
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@@ -437,8 +437,8 @@ ASL_TMP = $(patsubst %.c,%.asl.tmp,$@)
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 $(patsubst %.c,%.hex,$@) $@