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/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Copyright 2019 NXP
*/
#include <config.h>
.align 8
.global boot_pointer
boot_pointer:
.space 32
/*
* 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, boot_pointer
stp x1, x2, [x0], #16
stp x3, x4, [x0], #16
/*
* We use absolute address not PC relative address for return.
* When running SPL on iMX8, the A core starts at address 0,
* an alias to OCRAM 0x100000, our linker address for SPL is
* from 0x100000. So using absolute address can jump to the OCRAM
* address from the alias. The alias only map first 96KB of OCRAM,
* so this require the SPL size can't beyond 96KB.
* But when using SPL DM, the size increase significantly and
* always beyonds 96KB. That's why we have to jump to OCRAM.
* Normal u-boot also runs into this codes, but there is no impact.
*/
ldr x1, =save_boot_params_ret
br x1
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