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| author | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2018-12-23 07:22:56 +0200 |
|---|---|---|
| committer | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2018-12-30 12:28:37 +0000 |
| commit | 3ba79b319ef5d47b0d16482a254de7c5c740e415 (patch) | |
| tree | e322d7093612ab909c98dd8605b02ea72413ffe4 | |
| parent | a75ab2c46d2f7f14511cfa47a716eb394bdb5415 (diff) | |
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>
| -rw-r--r-- | src/arch/x86/Makefile.inc | 2 |
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. |