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| author | Aaron Durbin <adurbin@chromium.org> | 2015-09-03 11:01:17 -0500 |
|---|---|---|
| committer | Aaron Durbin <adurbin@chromium.org> | 2015-09-09 03:23:07 +0000 |
| commit | 85982cd4a2ed31a441eb96b247ae4d19091b1c1c (patch) | |
| tree | 4eae95d88c59602c436b9c799d7ff60095540a6d /src/arch | |
| parent | 3953e3947d375c0552abc45d47a120aaee67d763 (diff) | |
| download | coreboot-85982cd4a2ed31a441eb96b247ae4d19091b1c1c.tar.xz | |
x86: don't create MAINBOARDDIR/romstage.inc for !ROMCC boards
Previously, the x86 romstage build process was unconditionally
creating a romstage.inc and adding it to crt0s. This step is
inherently not necessary in the !ROMCC case becaue the romstage.inc
was created by the compiler outputting assembler. That means
MAINBOARDDIR/romstage.c is truly a C environment that requires
some sort of assembler stub to call into (cache_as_ram.inc from
the chipset dirs). Therefore, remove this processing. The result
is that MAINBOARDDIR/romstage.c can use the normal build steps
in creating an object and linking. The layout of romstage.elf
will change but that's only from a symbol perspective.
BUG=chrome-os-partner:44827
BRANCH=None
TEST=Built multitude of boards. Compared readelf -e output.
Change-Id: I9b8079caaaa55e3ae20d3db4c9b8be04cdc41ab7
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/11503
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Diffstat (limited to 'src/arch')
| -rw-r--r-- | src/arch/x86/Makefile.inc | 24 |
1 files changed, 10 insertions, 14 deletions
diff --git a/src/arch/x86/Makefile.inc b/src/arch/x86/Makefile.inc index b0546f5b00..00d8d27dc8 100644 --- a/src/arch/x86/Makefile.inc +++ b/src/arch/x86/Makefile.inc @@ -125,13 +125,19 @@ endif crt0s += $(cpu_incs-y) -crt0s += $(obj)/mainboard/$(MAINBOARDDIR)/romstage.inc +ifneq ($(CONFIG_ROMCC),y) + +romstage-srcs += $(src)/mainboard/$(MAINBOARDDIR)/romstage.c -ifeq ($(CONFIG_ROMCC),y) +else # CONFIG_ROMCC == y + +# This order matters. The mainboards requiring ROMCC need their mainboard +# code to follow the prior crt0s files for program flow control. The +# romstage.inc from the MAINBOARDDIR is implicitly main() for romstage +# because of the instruction sequen fall-through. +crt0s += $(obj)/mainboard/$(MAINBOARDDIR)/romstage.inc crt0s += $(src)/arch/x86/crt0_romcc_epilogue.inc -endif -ifeq ($(CONFIG_ROMCC),y) ifeq ($(CONFIG_MMX),y) ifeq ($(CONFIG_SSE),y) ROMCCFLAGS := -mcpu=p4 -O2 # MMX, SSE @@ -156,17 +162,7 @@ $(objcbfs)/romstage%.elf: $(objcbfs)/romstage%.debug $(obj)/mainboard/$(MAINBOARDDIR)/romstage.inc: $(src)/mainboard/$(MAINBOARDDIR)/romstage.c $(objutil)/romcc/romcc $(OPTION_TABLE_H) $(obj)/build.h $(obj)/config.h printf " ROMCC romstage.inc\n" $(ROMCC) -c -S $(ROMCCFLAGS) -D__ROMSTAGE__ -D__PRE_RAM__ -I. $(CPPFLAGS_romstage) $< -o $@ -else -$(obj)/mainboard/$(MAINBOARDDIR)/romstage.pre.inc: $(src)/mainboard/$(MAINBOARDDIR)/romstage.c $(OPTION_TABLE_H) $(obj)/build.h $(obj)/config.h - @printf " CC romstage.inc\n" - $(CC_romstage) $(CPPFLAGS_romstage) $(CFLAGS_romstage) -MMD -D__ROMSTAGE__ -D__PRE_RAM__ -I$(src) -I. -I$(obj) -c -S $< -o $@ - -$(obj)/mainboard/$(MAINBOARDDIR)/romstage.inc: $(obj)/mainboard/$(MAINBOARDDIR)/romstage.pre.inc - @printf " POST romstage.inc\n" - sed -e 's/\.rodata/.rom.data/g' -e 's/\^\.text/.section .rom.text/g' \ - -e 's/\^\.section \.text/.section .rom.text/g' $^ > $@.tmp - mv $@.tmp $@ endif romstage-srcs += $(objgenerated)/crt0.S |