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| author | Pali Rohár <pali@kernel.org> | 2022-12-11 15:14:59 +0100 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2022-12-22 15:39:13 -0500 |
| commit | 138b6061a100f149e9249d09ef3e6db2437ff147 (patch) | |
| tree | 9e430ca359b66476be299784133edf7948fd46a0 | |
| parent | c0d0569cf6f7d818cb1bbf5222c5e777bfea4d8c (diff) | |
| download | u-boot-138b6061a100f149e9249d09ef3e6db2437ff147.zip u-boot-138b6061a100f149e9249d09ef3e6db2437ff147.tar.gz u-boot-138b6061a100f149e9249d09ef3e6db2437ff147.tar.bz2 | |
powerpc/mpc85xx: Improve disabling of SPE instructions
Specifying -mspe=no also disables usage of SPE instructions. It is
documented in "[PATCH,rs6000] make -mno-spe work as expected" email:
http://gcc.gnu.org/ml/gcc-patches/2008-04/msg00311.html
So replace -mspe=yes by -mspe=no, so make it clear that u-boot has to be
compiled without SPE instructions.
Linux kernel contains following Makefile code to achieve it:
# No SPE instruction when building kernel
# (We use all available options to help semi-broken compilers)
KBUILD_CFLAGS += $(call cc-option,-mno-spe)
KBUILD_CFLAGS += $(call cc-option,-mspe=no)
Do same for U-Boot.
Signed-off-by: Pali Rohár <pali@kernel.org>
| -rw-r--r-- | arch/powerpc/cpu/mpc85xx/config.mk | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/arch/powerpc/cpu/mpc85xx/config.mk b/arch/powerpc/cpu/mpc85xx/config.mk index b6b5d20..482bb90 100644 --- a/arch/powerpc/cpu/mpc85xx/config.mk +++ b/arch/powerpc/cpu/mpc85xx/config.mk @@ -6,11 +6,12 @@ PLATFORM_CPPFLAGS += -msoft-float -mno-string PLATFORM_RELFLAGS += -msingle-pic-base -fno-jump-tables -# -mspe=yes is needed to have -mno-spe accepted by a buggy GCC; +# No SPE instruction when building u-boot +# (We use all available options to help semi-broken compilers) # see "[PATCH,rs6000] make -mno-spe work as expected" on # http://gcc.gnu.org/ml/gcc-patches/2008-04/msg00311.html -PLATFORM_CPPFLAGS += $(call cc-option,-mspe=yes) \ - $(call cc-option,-mno-spe) +PLATFORM_CPPFLAGS += $(call cc-option,-mno-spe) \ + $(call cc-option,-mspe=no) ifdef CONFIG_E6500 PLATFORM_CPPFLAGS += -mcpu=e6500 |