android_kernel_samsung_hero.../drivers/soc/qcom/idle-v8.S
2016-08-17 16:41:52 +08:00

64 lines
1.9 KiB
ArmAsm

/*
* Idle processing for ARMv8-based Qualcomm SoCs.
*
* Copyright (C) 2007 Google, Inc.
* Copyright (c) 2007-2009, 2011-2014 The Linux Foundation. All rights reserved.
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* This program is distributed in the hope that 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 <linux/threads.h>
#include <asm/assembler.h>
ENTRY(msm_pm_boot_entry)
mrs x0, mpidr_el1
and x0, x0, #0xffff /* what CPU/cluster affinity */
adr x3, align
ldr x1, [x3]
sub x3, x1, x3
ldr x1, =msm_pc_debug_counters_phys /* phys addr for IMEM reg */
sub x1, x1, x3 /* translate virt to phys */
ldr x1,[x1]
cmp x1, #0
beq skip_pc_debug3
and x2, x0, #0xff00
lsr x2, x0, #0x8
add x1, x1, x2, lsl #7 /* get offset for this cluster */
and x2, x0, #0xff
add x1, x1, x2, lsl #5 /* get offset for this cpu */
add x1, x1, #8 /* warmboot entry counter */
ldr x2, [x1]
add x2, x2, #1
str x2, [x1]
skip_pc_debug3:
ldr x1, =msm_pm_boot_vector
sub x1, x1, x3 /* translate virt to phys */
lsr x2, x0, #0x8 /* Get cluster id and clear cpu id */
add x1, x1, x2, lsl #0x5 /* Get offset for this cluster */
and x0, x0, #0x03 /* Get cpu id and clear cluster id */
add x1, x1, x0, lsl #3 /* Get offset for this cpu */
ldr x1, [x1]
ret x1 /* jump */
ENDPROC(msm_pm_boot_entry)
__ALIGN
align: .quad .
.data
.globl msm_pm_boot_vector
msm_pm_boot_vector:
.space 8 * 4 * 4
.globl msm_pc_debug_counters_phys
msm_pc_debug_counters_phys:
.long 0x0