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- /*
- * Copyright (c) 2014, Fuzhou Rockchip Electronics Co., Ltd
- * Author: Tony Xie <tony.xie@rock-chips.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- */
- #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
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