powerpc/mpc85xx: Disable AltiVec and VSX instructions

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>

diff --git a/arch/powerpc/cpu/mpc85xx/config.mk b/arch/powerpc/cpu/mpc85xx/config.mk
index 482bb90cb12097db7c674f8f4f8844748cb74d6b..71a98f05c9021ef2e9647387462a7b689ebdcd35 100644 (file)
--- 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