Sometimes we met SERROR, but only to catch it when Linux boots up. Let's enable catching in U-Boot to catch it ealier and ease debug.
Signed-off-by: Peng Fan peng.fan@nxp.com --- arch/arm/mach-imx/Makefile | 2 +- arch/arm/mach-imx/lowlevel.S | 22 ++++++++++++++++++++++ 2 files changed, 23 insertions(+), 1 deletion(-) create mode 100644 arch/arm/mach-imx/lowlevel.S
diff --git a/arch/arm/mach-imx/Makefile b/arch/arm/mach-imx/Makefile index c3ed62aed6..37675d0558 100644 --- a/arch/arm/mach-imx/Makefile +++ b/arch/arm/mach-imx/Makefile @@ -204,7 +204,7 @@ endif
targets += $(addprefix ../../../,SPL spl/u-boot-spl.cfgout u-boot-dtb.cfgout u-boot.cfgout u-boot.uim spl/u-boot-nand-spl.imx)
-obj-$(CONFIG_ARM64) += sip.o +obj-$(CONFIG_ARM64) += lowlevel.o sip.o
obj-$(CONFIG_MX5) += mx5/ obj-$(CONFIG_MX6) += mx6/ diff --git a/arch/arm/mach-imx/lowlevel.S b/arch/arm/mach-imx/lowlevel.S new file mode 100644 index 0000000000..158fdb7d87 --- /dev/null +++ b/arch/arm/mach-imx/lowlevel.S @@ -0,0 +1,22 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright 2019 NXP + */ + +#include <linux/linkage.h> + +ENTRY(lowlevel_init) + mrs x0, CurrentEL + cmp x0, #8 + b.eq 1f + ret +1: + msr daifclr, #4 + + /* set HCR_EL2.AMO to catch SERROR */ + mrs x0, hcr_el2 + orr x0, x0, #0x20 + msr hcr_el2, x0 + isb + ret +ENDPROC(lowlevel_init)