u-boot/arch/arm/mach-imx/lowlevel.S
Peng Fan 7a0c9b0888 imx: add lowlevel init for ARM64
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>
2019-04-25 19:16:24 +02:00

22 lines
310 B
ArmAsm

/* 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)