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authorPali Rohár <pali@kernel.org>2022-12-19 22:46:22 +0100
committerTom Rini <trini@konsulko.com>2022-12-22 15:39:13 -0500
commit1db706edcd72724a6f18228d42b26e6b8e9e51ba (patch)
tree73fe97873ec5bc0c3de997a9dfe54154ce6ba5ee
parent138b6061a100f149e9249d09ef3e6db2437ff147 (diff)
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>
-rw-r--r--arch/powerpc/cpu/mpc85xx/config.mk4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/powerpc/cpu/mpc85xx/config.mk b/arch/powerpc/cpu/mpc85xx/config.mk
index 482bb90cb1..71a98f05c9 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