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/*
* (C) Copyright 2016 Rockchip Electronics Co., Ltd
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <linux/linkage.h>
.globl SAVE_SP_ADDR
SAVE_SP_ADDR:
.word 0
/*
* void save_boot_params
*
* Save sp, lr, r1~r12
*/
ENTRY(save_boot_params)
push {r1-r12, lr}
ldr r0, =SAVE_SP_ADDR
str sp, [r0]
b save_boot_params_ret @ back to my caller
ENDPROC(save_boot_params)
.globl back_to_bootrom
ENTRY(back_to_bootrom)
ldr r0, =SAVE_SP_ADDR
ldr sp, [r0]
mov r0, #0
pop {r1-r12, pc}
ENDPROC(back_to_bootrom)
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