mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-18 02:38:56 +00:00
77 lines
1.5 KiB
ArmAsm
77 lines
1.5 KiB
ArmAsm
|
/*
|
||
|
|
* Copyright (C) 2020 Intel Corporation. All rights reserved
|
||
|
|
*
|
||
|
|
* SPDX-License-Identifier: GPL-2.0
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <asm-offsets.h>
|
||
|
|
#include <config.h>
|
||
|
|
#include <linux/linkage.h>
|
||
|
|
#include <asm/macro.h>
|
||
|
|
|
||
|
|
ENTRY(lowlevel_init)
|
||
|
|
mov x29, lr /* Save LR */
|
||
|
|
|
||
|
|
#if defined(CONFIG_GICV2) || defined(CONFIG_GICV3)
|
||
|
|
#if defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_ATF)
|
||
|
|
wait_for_atf:
|
||
|
|
ldr x4, =CPU_RELEASE_ADDR
|
||
|
|
ldr x5, [x4]
|
||
|
|
cbz x5, slave_wait_atf
|
||
|
|
br x5
|
||
|
|
slave_wait_atf:
|
||
|
|
branch_if_slave x0, wait_for_atf
|
||
|
|
#else
|
||
|
|
branch_if_slave x0, 1f
|
||
|
|
#endif
|
||
|
|
ldr x0, =GICD_BASE
|
||
|
|
bl gic_init_secure
|
||
|
|
1:
|
||
|
|
#if defined(CONFIG_GICV3)
|
||
|
|
ldr x0, =GICR_BASE
|
||
|
|
bl gic_init_secure_percpu
|
||
|
|
#elif defined(CONFIG_GICV2)
|
||
|
|
ldr x0, =GICD_BASE
|
||
|
|
ldr x1, =GICC_BASE
|
||
|
|
bl gic_init_secure_percpu
|
||
|
|
#endif
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef CONFIG_ARMV8_MULTIENTRY
|
||
|
|
branch_if_master x0, x1, 2f
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Slave should wait for master clearing spin table.
|
||
|
|
* This sync prevent slaves observing incorrect
|
||
|
|
* value of spin table and jumping to wrong place.
|
||
|
|
*/
|
||
|
|
#if defined(CONFIG_GICV2) || defined(CONFIG_GICV3)
|
||
|
|
#ifdef CONFIG_GICV2
|
||
|
|
ldr x0, =GICC_BASE
|
||
|
|
#endif
|
||
|
|
bl gic_wait_for_interrupt
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/*
|
||
|
|
* All slaves will enter EL2 and optionally EL1.
|
||
|
|
*/
|
||
|
|
adr x4, lowlevel_in_el2
|
||
|
|
ldr x5, =ES_TO_AARCH64
|
||
|
|
bl armv8_switch_to_el2
|
||
|
|
|
||
|
|
lowlevel_in_el2:
|
||
|
|
#ifdef CONFIG_ARMV8_SWITCH_TO_EL1
|
||
|
|
adr x4, lowlevel_in_el1
|
||
|
|
ldr x5, =ES_TO_AARCH64
|
||
|
|
bl armv8_switch_to_el1
|
||
|
|
|
||
|
|
lowlevel_in_el1:
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif /* CONFIG_ARMV8_MULTIENTRY */
|
||
|
|
|
||
|
|
2:
|
||
|
|
mov lr, x29 /* Restore LR */
|
||
|
|
ret
|
||
|
|
ENDPROC(lowlevel_init)
|