lowlevel.S
423 Bytes
/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Copyright 2019 NXP
*/
#include <linux/linkage.h>
ENTRY(lowlevel_init)
#ifdef CONFIG_SPL_BUILD
mrs x0, CurrentEL
cmp x0, #12
b.eq 1f
ret
1:
msr daifclr, #4
isb
ret
#else
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
#endif
ENDPROC(lowlevel_init)