2015-11-17 06:20:27 +00:00
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/*
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2016-07-12 11:09:49 +00:00
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* (C) Copyright 2016 Rockchip Electronics Co., Ltd
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2015-11-17 06:20:27 +00:00
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <linux/linkage.h>
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.globl SAVE_SP_ADDR
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SAVE_SP_ADDR:
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.word 0
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/*
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* void save_boot_params
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*
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* Save sp, lr, r1~r12
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*/
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ENTRY(save_boot_params)
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push {r1-r12, lr}
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ldr r0, =SAVE_SP_ADDR
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str sp, [r0]
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b save_boot_params_ret @ back to my caller
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ENDPROC(save_boot_params)
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.globl back_to_bootrom
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ENTRY(back_to_bootrom)
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ldr r0, =SAVE_SP_ADDR
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ldr sp, [r0]
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mov r0, #0
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pop {r1-r12, pc}
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ENDPROC(back_to_bootrom)
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