102 lines
2.0 KiB
ArmAsm
102 lines
2.0 KiB
ArmAsm
/*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*
|
|
* Copyright (c) 2019 Western Digital Corporation or its affiliates.
|
|
*
|
|
* Authors:
|
|
* Anup Patel <anup.patel@wdc.com>
|
|
*/
|
|
|
|
#include "fw_base.S"
|
|
|
|
.section .entry, "ax", %progbits
|
|
.align 3
|
|
.global fw_boot_hart
|
|
/*
|
|
* This function is called very early even before
|
|
* fw_save_info() is called.
|
|
* We can only use a0, a1, and a2 registers here.
|
|
* The boot HART id should be returned in 'a0'.
|
|
*/
|
|
fw_boot_hart:
|
|
li a0, -1
|
|
ret
|
|
|
|
.section .entry, "ax", %progbits
|
|
.align 3
|
|
.global fw_save_info
|
|
/*
|
|
* We can only use a0, a1, a2, a3, and a4 registers here.
|
|
* The a0, a1, and a2 registers will be same as passed by
|
|
* previous booting stage.
|
|
* Nothing to be returned here.
|
|
*/
|
|
fw_save_info:
|
|
ret
|
|
|
|
.section .entry, "ax", %progbits
|
|
.align 3
|
|
.global fw_next_arg1
|
|
/*
|
|
* We can only use a0, a1, and a2 registers here.
|
|
* The a0, a1, and a2 registers will be same as passed by
|
|
* previous booting stage.
|
|
* The next arg1 should be returned in 'a0'.
|
|
*/
|
|
fw_next_arg1:
|
|
#ifdef FW_PAYLOAD_FDT_ADDR
|
|
li a0, FW_PAYLOAD_FDT_ADDR
|
|
#elif defined(FW_PAYLOAD_FDT_OFFSET)
|
|
lla a0, _fw_start
|
|
li a1, FW_PAYLOAD_FDT_OFFSET
|
|
add a0, a0, a1
|
|
#else
|
|
add a0, a1, zero
|
|
#endif
|
|
ret
|
|
|
|
.section .entry, "ax", %progbits
|
|
.align 3
|
|
.global fw_next_addr
|
|
/*
|
|
* We can only use a0, a1, and a2 registers here.
|
|
* The next address should be returned in 'a0'.
|
|
*/
|
|
fw_next_addr:
|
|
lla a0, payload_bin
|
|
ret
|
|
|
|
.section .entry, "ax", %progbits
|
|
.align 3
|
|
.global fw_next_mode
|
|
/*
|
|
* We can only use a0, a1, and a2 registers here.
|
|
* The next address should be returned in 'a0'.
|
|
*/
|
|
fw_next_mode:
|
|
li a0, PRV_S
|
|
ret
|
|
|
|
.section .entry, "ax", %progbits
|
|
.align 3
|
|
.global fw_options
|
|
/*
|
|
* We can only use a0, a1, and a2 registers here.
|
|
* The 'a4' register will have default options.
|
|
* The next address should be returned in 'a0'.
|
|
*/
|
|
fw_options:
|
|
add a0, zero, zero
|
|
ret
|
|
|
|
.section .payload, "ax", %progbits
|
|
.align 4
|
|
.globl payload_bin
|
|
payload_bin:
|
|
#ifndef FW_PAYLOAD_PATH
|
|
wfi
|
|
j payload_bin
|
|
#else
|
|
.incbin FW_PAYLOAD_PATH
|
|
#endif
|