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/*
* Copyright (c) 2021, Nico Weber <thakis@chromium.org>
* Copyright (c) 2021, Marcin Undak <mcinek@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
.global wait_cycles
.type wait_cycles, @function
wait_cycles:
Lstart:
// This is probably too fast when caching and branch prediction is turned on.
// FIXME: Make timer-based.
subs x0, x0, #1
bne Lstart
ret
.global enter_el2_from_el3
.type enter_el2_from_el3, @function
enter_el2_from_el3:
adr x0, entered_el2
msr elr_el3, x0
eret
entered_el2:
ret
.global enter_el1_from_el2
.type enter_el1_from_el2, @function
enter_el1_from_el2:
adr x0, entered_el1
msr elr_el2, x0
eret
entered_el1:
ret
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