mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-06-09 23:36:03 +09:00
fefe051335
We use information from ATF to know whether OP-TEE is running or not. So save args passed from ATF. Signed-off-by: Peng Fan <peng.fan@nxp.com>
37 lines
1014 B
ArmAsm
37 lines
1014 B
ArmAsm
/* 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
|