diff options
Diffstat (limited to 'arch/arm/mach-rockchip/sleep.S')
| -rw-r--r-- | arch/arm/mach-rockchip/sleep.S | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/arch/arm/mach-rockchip/sleep.S b/arch/arm/mach-rockchip/sleep.S new file mode 100644 index 000000000..3eca3922c --- /dev/null +++ b/arch/arm/mach-rockchip/sleep.S @@ -0,0 +1,64 @@ +/* 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 |