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/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Copyright 2017 NXP
*/
#include <config.h>
.align 8
.global rom_pointer
rom_pointer:
.space 256
/*
* Routine: save_boot_params (called after reset from start.S)
*/
.global save_boot_params
save_boot_params:
/* The firmware provided ATAG/FDT address can be found in r2/x0 */
adr x0, rom_pointer
stp x1, x2, [x0], #16
stp x3, x4, [x0], #16
stp x5, x6, [x0], #16
stp x7, x8, [x0], #16
stp x9, x10, [x0], #16
stp x11, x12, [x0], #16
stp x13, x14, [x0], #16
stp x15, x16, [x0], #16
stp x17, x18, [x0], #16
stp x19, x20, [x0], #16
stp x21, x22, [x0], #16
stp x23, x24, [x0], #16
stp x25, x26, [x0], #16
stp x27, x28, [x0], #16
stp x29, x30, [x0], #16
mov x30, sp
str x30, [x0], #8
/* Returns */
b save_boot_params_ret
.global restore_boot_params
restore_boot_params:
adr x0, rom_pointer
ldp x1, x2, [x0], #16
ldp x3, x4, [x0], #16
ldp x5, x6, [x0], #16
ldp x7, x8, [x0], #16
ldp x9, x10, [x0], #16
ldp x11, x12, [x0], #16
ldp x13, x14, [x0], #16
ldp x15, x16, [x0], #16
ldp x17, x18, [x0], #16
ldp x19, x20, [x0], #16
ldp x21, x22, [x0], #16
ldp x23, x24, [x0], #16
ldp x25, x26, [x0], #16
ldp x27, x28, [x0], #16
ldp x29, x30, [x0], #16
ldr x0, [x0]
mov sp, x0
ret
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