65 lines
1.9 KiB
ArmAsm
65 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
|