forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
64 lines
1.4 KiB
64 lines
1.4 KiB
/* SPDX-License-Identifier: GPL-2.0-only */ |
|
/* |
|
* Copyright (c) 2014, Fuzhou Rockchip Electronics Co., Ltd |
|
* Author: Tony Xie <tony.xie@rock-chips.com> |
|
*/ |
|
|
|
#include <linux/linkage.h> |
|
#include <asm/assembler.h> |
|
#include <asm/memory.h> |
|
|
|
.data |
|
/* |
|
* this code will be copied from |
|
* ddr to sram for system resumeing. |
|
* so it is ".data section". |
|
*/ |
|
.align 2 |
|
|
|
ENTRY(rockchip_slp_cpu_resume) |
|
setmode PSR_I_BIT | PSR_F_BIT | SVC_MODE, r1 @ set svc, irqs off |
|
mrc p15, 0, r1, c0, c0, 5 |
|
and r1, r1, #0xf |
|
cmp r1, #0 |
|
/* olny cpu0 can continue to run, the others is halt here */ |
|
beq cpu0run |
|
secondary_loop: |
|
wfe |
|
b secondary_loop |
|
cpu0run: |
|
ldr r3, rkpm_bootdata_l2ctlr_f |
|
cmp r3, #0 |
|
beq sp_set |
|
ldr r3, rkpm_bootdata_l2ctlr |
|
mcr p15, 1, r3, c9, c0, 2 |
|
sp_set: |
|
ldr sp, rkpm_bootdata_cpusp |
|
ldr r1, rkpm_bootdata_cpu_code |
|
bx r1 |
|
ENDPROC(rockchip_slp_cpu_resume) |
|
|
|
/* Parameters filled in by the kernel */ |
|
|
|
/* Flag for whether to restore L2CTLR on resume */ |
|
.global rkpm_bootdata_l2ctlr_f |
|
rkpm_bootdata_l2ctlr_f: |
|
.long 0 |
|
|
|
/* Saved L2CTLR to restore on resume */ |
|
.global rkpm_bootdata_l2ctlr |
|
rkpm_bootdata_l2ctlr: |
|
.long 0 |
|
|
|
/* CPU resume SP addr */ |
|
.globl rkpm_bootdata_cpusp |
|
rkpm_bootdata_cpusp: |
|
.long 0 |
|
|
|
/* CPU resume function (physical address) */ |
|
.globl rkpm_bootdata_cpu_code |
|
rkpm_bootdata_cpu_code: |
|
.long 0 |
|
|
|
ENTRY(rk3288_bootram_sz) |
|
.word . - rockchip_slp_cpu_resume
|
|
|