| /* 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 |
