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 --- arch/powerpc/cpu/mpc85xx/config.mk | 4 ++++ 1 file changed, 4 insertions(+)

diff --git a/arch/powerpc/cpu/mpc85xx/config.mk b/arch/powerpc/cpu/mpc85xx/config.mk index 482bb90cb120..71a98f05c902 100644 --- a/arch/powerpc/cpu/mpc85xx/config.mk +++ b/arch/powerpc/cpu/mpc85xx/config.mk @@ -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