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Merge tag 'amd-drm-next-6.5-2023-06-09' of https://gitlab.freedesktop.org/agd5f/linux...
[linux.git] / arch / arm / mach-rockchip / sleep.S
1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * Copyright (c) 2014, Fuzhou Rockchip Electronics Co., Ltd
4  * Author: Tony Xie <[email protected]>
5  */
6
7 #include <linux/linkage.h>
8 #include <asm/assembler.h>
9 #include <asm/memory.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
19 ENTRY(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
26 secondary_loop:
27         wfe
28         b       secondary_loop
29 cpu0run:
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
35 sp_set:
36         ldr     sp, rkpm_bootdata_cpusp
37         ldr     r1, rkpm_bootdata_cpu_code
38         bx      r1
39 ENDPROC(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
45 rkpm_bootdata_l2ctlr_f:
46         .long 0
47
48 /* Saved L2CTLR to restore on resume */
49         .global rkpm_bootdata_l2ctlr
50 rkpm_bootdata_l2ctlr:
51         .long 0
52
53 /* CPU resume SP addr */
54         .globl rkpm_bootdata_cpusp
55 rkpm_bootdata_cpusp:
56         .long 0
57
58 /* CPU resume function (physical address) */
59         .globl rkpm_bootdata_cpu_code
60 rkpm_bootdata_cpu_code:
61         .long 0
62
63 ENTRY(rk3288_bootram_sz)
64         .word   . - rockchip_slp_cpu_resume
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