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authorKyösti Mälkki <kyosti.malkki@gmail.com>2018-12-23 07:22:56 +0200
committerKyösti Mälkki <kyosti.malkki@gmail.com>2018-12-30 12:28:37 +0000
commit3ba79b319ef5d47b0d16482a254de7c5c740e415 (patch)
treee322d7093612ab909c98dd8605b02ea72413ffe4 /src/arch
parenta75ab2c46d2f7f14511cfa47a716eb394bdb5415 (diff)
downloadcoreboot-3ba79b319ef5d47b0d16482a254de7c5c740e415.tar.xz
arch/x86: Prevent romcc bootblock from using MMX registers
Platforms with SSE=y or SSE2=y will invoke romcc with -mcpu=k7. This implicitly enabled romcc to consume MMX registers, if XMM set was consumed first. Explicitly tell romcc not to clobber MMX set. Change-Id: I37f1d6ea01873036712dfbb32bb1dcd5d769e85d Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/30392 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Diffstat (limited to 'src/arch')
-rw-r--r--src/arch/x86/Makefile.inc2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/arch/x86/Makefile.inc b/src/arch/x86/Makefile.inc
index c5cf62549a..0c554b0b80 100644
--- a/src/arch/x86/Makefile.inc
+++ b/src/arch/x86/Makefile.inc
@@ -143,7 +143,7 @@ $(call src-to-obj,bootblock,$(dir)/bootblock.ld): $(objgenerated)/bootblock.ld
bootblock_romccflags := -mcpu=i386 -O2 -D__PRE_RAM__ -D__BOOTBLOCK__
ifeq ($(CONFIG_SSE),y)
-bootblock_romccflags := -mcpu=k7 -msse -O2 -D__PRE_RAM__ -D__BOOTBLOCK__
+bootblock_romccflags := -mcpu=k7 -mno-mmx -msse -O2 -D__PRE_RAM__ -D__BOOTBLOCK__
endif
# This is a hack in case there are no per chipset linker files.