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authorStefan Reinauer <stefan.reinauer@coreboot.org>2015-12-14 15:53:21 -0800
committerStefan Reinauer <stefan.reinauer@coreboot.org>2015-12-16 00:31:23 +0100
commit490006bf7dae0b4df1dfe41e280cb7b40d060db8 (patch)
treea4dbae6c6205b4d48dece3ffcc8bf84b67cf6063 /src/soc
parent07a1b281a864e8c2a17e29767a7abf495587b325 (diff)
downloadcoreboot-490006bf7dae0b4df1dfe41e280cb7b40d060db8.tar.xz
intel/skylake: Work around ROMCC optimization bug
On Skylake systems, the bootblock fails to compile with the following error message: bootblock_simple.c:6.1: 0x13930e0 copy Internal compiler error: non dominated rhs use point 0x13a3f70? Aborted (core dumped) The option -fno-simplify-phi works around the issue, but will cause the code to use more registers, hence we also need to enable -mcpu=p4 (see intel/truxton mainboard for another example of where this has been done in the past) Change-Id: Iea1a1ba18d76c7323bb626c5f4b0032e4ee04a86 Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Reviewed-on: https://review.coreboot.org/12719 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Diffstat (limited to 'src/soc')
-rw-r--r--src/soc/intel/skylake/Makefile.inc2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/soc/intel/skylake/Makefile.inc b/src/soc/intel/skylake/Makefile.inc
index e824f2a485..9dd4cac8c3 100644
--- a/src/soc/intel/skylake/Makefile.inc
+++ b/src/soc/intel/skylake/Makefile.inc
@@ -78,4 +78,6 @@ CPPFLAGS_common += -I$(src)/vendorcode/intel/fsp/fsp1_1/skylake
# Currently used for microcode path.
CPPFLAGS_common += -I3rdparty/blobs/mainboard/$(CONFIG_MAINBOARD_DIR)
+ROMCCFLAGS := -mcpu=p4 -fno-simplify-phi -O2
+
endif