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powerpc/mpc85xx: Disable AltiVec and VSX instructions

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All vector instructions on powerpc mpc85xx must not be used because U-Boot
does not enable them. Usage cause random crashes. SPE vector instructions
are already disabled by compiler flags, so disable also AltiVec and VSX
vector instructions.

Linux kernel disables AltiVec and VSX instructions too.

Signed-off-by: Pali Rohár <pali@kernel.org>
This commit is contained in:
Pali Rohár 2022-12-19 22:46:22 +01:00 committed by Tom Rini
parent 138b6061a1
commit 1db706edcd
1 changed files with 4 additions and 0 deletions
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4
arch/powerpc/cpu/mpc85xx/config.mk
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@ -13,6 +13,10 @@ PLATFORM_RELFLAGS += -msingle-pic-base -fno-jump-tables
PLATFORM_CPPFLAGS += $(call cc-option,-mno-spe) \
$(call cc-option,-mspe=no)
# No AltiVec or VSX instructions when building u-boot
PLATFORM_CPPFLAGS += $(call cc-option,-mno-altivec)
PLATFORM_CPPFLAGS += $(call cc-option,-mno-vsx)
ifdef CONFIG_E6500
PLATFORM_CPPFLAGS += -mcpu=e6500
else ifdef CONFIG_E5500