mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-02 09:30:10 +00:00
e8a9293295
Currently, only the CPU_ON function is supported. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
40 lines
923 B
ArmAsm
40 lines
923 B
ArmAsm
/*
|
|
* Copyright (C) 2016 Socionext Inc.
|
|
* Author: Masahiro Yamada <yamada.masahiro@socionext.com>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <linux/linkage.h>
|
|
#include <asm/system.h>
|
|
|
|
.section ._secure.text, "ax"
|
|
|
|
ENTRY(uniphier_smp_trampoline)
|
|
ldr r0, 0f
|
|
mrc p15, 0, r1, c1, c0, 0 @ SCTLR (System Control Register)
|
|
orr r1, r1, #CR_I @ Enable ICache
|
|
bic r1, r1, #(CR_C | CR_M) @ Disable MMU and Dcache
|
|
mcr p15, 0, r1, c1, c0, 0
|
|
|
|
bx r0
|
|
0: .word uniphier_secondary_startup
|
|
.globl uniphier_smp_trampoline_end
|
|
uniphier_smp_trampoline_end:
|
|
ENDPROC(uniphier_smp_trampoline)
|
|
|
|
LENTRY(uniphier_secondary_startup)
|
|
mrc p15, 0, r1, c0, c0, 5 @ MPIDR (Multiprocessor Affinity Reg)
|
|
and r1, r1, #0xff
|
|
|
|
ldr r2, =uniphier_smp_booted
|
|
mov r0, #1
|
|
str r0, [r2, r1, lsl #2]
|
|
|
|
ldr r2, =uniphier_psci_holding_pen_release
|
|
pen: ldr r0, [r2]
|
|
cmp r0, r1
|
|
beq psci_cpu_entry
|
|
wfe
|
|
b pen
|
|
ENDPROC(uniphier_secondary_startup)
|