projects / mirror_ubuntu-zesty-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 9c1ec8e1 CZ |
1 | /* |
| 2 | * Copyright (c) 2014, Fuzhou Rockchip Electronics Co., Ltd | |
| 3 | * Author: Tony Xie <tony.xie@rock-chips.com> | |
| 4 | * | |
| 5 | * This program is free software; you can redistribute it and/or modify it | |
| 6 | * under the terms and conditions of the GNU General Public License, | |
| 7 | * version 2, as published by the Free Software Foundation. | |
| 8 | * | |
| 9 | * This program is distributed in the hope it will be useful, but WITHOUT | |
| 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
| 12 | * more details. | |
| 13 | * | |
| 14 | */ | |
| 15 | ||
| 16 | #include <linux/linkage.h> | |
| 17 | #include <asm/assembler.h> | |
| 18 | #include <asm/memory.h> | |
| 19 | ||
| 20 | .data | |
| 21 | /* | |
| 22 | * this code will be copied from | |
| 23 | * ddr to sram for system resumeing. | |
| 24 | * so it is ".data section". | |
| 25 | */ | |
| 26 | .align | |
| 27 | ||
| 28 | ENTRY(rockchip_slp_cpu_resume) | |
| 29 | setmode PSR_I_BIT | PSR_F_BIT | SVC_MODE, r1 @ set svc, irqs off | |
| 30 | mrc p15, 0, r1, c0, c0, 5 | |
| 31 | and r1, r1, #0xf | |
| 32 | cmp r1, #0 | |
| 33 | /* olny cpu0 can continue to run, the others is halt here */ | |
| 34 | beq cpu0run | |
| 35 | secondary_loop: | |
| 36 | wfe | |
| 37 | b secondary_loop | |
| 38 | cpu0run: | |
| 39 | ldr r3, rkpm_bootdata_l2ctlr_f | |
| 40 | cmp r3, #0 | |
| 41 | beq sp_set | |
| 42 | ldr r3, rkpm_bootdata_l2ctlr | |
| 43 | mcr p15, 1, r3, c9, c0, 2 | |
| 44 | sp_set: | |
| 45 | ldr sp, rkpm_bootdata_cpusp | |
| 46 | ldr r1, rkpm_bootdata_cpu_code | |
| 47 | bx r1 | |
| 48 | ENDPROC(rockchip_slp_cpu_resume) | |
| 49 | ||
| 50 | /* Parameters filled in by the kernel */ | |
| 51 | ||
| 52 | /* Flag for whether to restore L2CTLR on resume */ | |
| 53 | .global rkpm_bootdata_l2ctlr_f | |
| 54 | rkpm_bootdata_l2ctlr_f: | |
| 55 | .long 0 | |
| 56 | ||
| 57 | /* Saved L2CTLR to restore on resume */ | |
| 58 | .global rkpm_bootdata_l2ctlr | |
| 59 | rkpm_bootdata_l2ctlr: | |
| 60 | .long 0 | |
| 61 | ||
| 62 | /* CPU resume SP addr */ | |
| 63 | .globl rkpm_bootdata_cpusp | |
| 64 | rkpm_bootdata_cpusp: | |
| 65 | .long 0 | |
| 66 | ||
| 67 | /* CPU resume function (physical address) */ | |
| 68 | .globl rkpm_bootdata_cpu_code | |
| 69 | rkpm_bootdata_cpu_code: | |
| 70 | .long 0 | |
| 71 | ||
| 72 | ENTRY(rk3288_bootram_sz) | |
| 73 | .word . - rockchip_slp_cpu_resume |