1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Copyright (c) 2014, Fuzhou Rockchip Electronics Co., Ltd
4 * Author: Tony Xie <tony.xie@rock-chips.com>
5 */
6
7#include <linux/linkage.h>
8#include <asm/assembler.h>
9#include <asm/page.h>
10
11.data
12/*
13 * this code will be copied from
14 * ddr to sram for system resumeing.
15 * so it is ".data section".
16 */
17	.align	2
18
19ENTRY(rockchip_slp_cpu_resume)
20	setmode	PSR_I_BIT | PSR_F_BIT | SVC_MODE, r1  @ set svc, irqs off
21	mrc	p15, 0, r1, c0, c0, 5
22	and	r1, r1, #0xf
23	cmp	r1, #0
24	/* olny cpu0 can continue to run, the others is halt here */
25	beq	cpu0run
26secondary_loop:
27	wfe
28	b	secondary_loop
29cpu0run:
30	ldr	r3, rkpm_bootdata_l2ctlr_f
31	cmp	r3, #0
32	beq	sp_set
33	ldr	r3, rkpm_bootdata_l2ctlr
34	mcr	p15, 1, r3, c9, c0, 2
35sp_set:
36	ldr	sp, rkpm_bootdata_cpusp
37	ldr	r1, rkpm_bootdata_cpu_code
38	bx	r1
39ENDPROC(rockchip_slp_cpu_resume)
40
41/* Parameters filled in by the kernel */
42
43/* Flag for whether to restore L2CTLR on resume */
44	.global rkpm_bootdata_l2ctlr_f
45rkpm_bootdata_l2ctlr_f:
46	.long 0
47
48/* Saved L2CTLR to restore on resume */
49	.global rkpm_bootdata_l2ctlr
50rkpm_bootdata_l2ctlr:
51	.long 0
52
53/* CPU resume SP addr */
54	.globl rkpm_bootdata_cpusp
55rkpm_bootdata_cpusp:
56	.long 0
57
58/* CPU resume function (physical address) */
59	.globl rkpm_bootdata_cpu_code
60rkpm_bootdata_cpu_code:
61	.long 0
62
63ENTRY(rk3288_bootram_sz)
64        .word   . - rockchip_slp_cpu_resume
65