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/*
* Copyright (C) 2018 Marvell International Ltd.
*
* SPDX-License-Identifier: BSD-3-Clause
* https://spdx.org/licenses
*/
#include <asm_macros.S>
#include <marvell_def.h>
#include <platform_def.h>
#define PTE_NON_EXEC_OFF 54 /* XN - eXecute Never bit offset - see VMSAv8-64 */
.globl marvell_ble_prepare_exit
func marvell_ble_prepare_exit
/*
* Read the page table base and set the first page to be executable.
* This is required for jumping to DRAM for further execution.
*/
mrs x0, ttbr0_el3
ldr x1, [x0]
mov x2, #1
bic x1, x1, x2, lsl #PTE_NON_EXEC_OFF
str x1, [x0]
tlbi alle3
dsb sy
isb
ret
endfunc marvell_ble_prepare_exit
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