linux/arch/powerpc/platforms/pasemi/powersave.S
Thomas Gleixner 4505153954 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 333
Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation 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 you should have received a copy of the gnu general
  public license along with this program if not write to the free
  software foundation inc 59 temple place suite 330 boston ma 02111
  1307 usa

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 136 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Alexios Zavras <alexios.zavras@intel.com>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190530000436.384967451@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-05 17:37:06 +02:00

77 lines
1.2 KiB
ArmAsm

/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) 2006-2007 PA Semi, Inc
*
* Maintained by: Olof Johansson <olof@lixom.net>
*/
#include <asm/processor.h>
#include <asm/page.h>
#include <asm/ppc_asm.h>
#include <asm/cputable.h>
#include <asm/cache.h>
#include <asm/thread_info.h>
#include <asm/asm-offsets.h>
/* Power savings opcodes since not all binutils have them at this time */
#define DOZE .long 0x4c000324
#define NAP .long 0x4c000364
#define SLEEP .long 0x4c0003a4
#define RVW .long 0x4c0003e4
/* Common sequence to do before going to any of the
* powersavings modes.
*/
#define PRE_SLEEP_SEQUENCE \
std r3,8(r1); \
ptesync ; \
ld r3,8(r1); \
1: cmpd r3,r3; \
bne 1b
_doze:
PRE_SLEEP_SEQUENCE
DOZE
b .
_GLOBAL(idle_spin)
blr
_GLOBAL(idle_doze)
LOAD_REG_ADDR(r3, _doze)
b sleep_common
/* Add more modes here later */
sleep_common:
mflr r0
std r0, 16(r1)
stdu r1,-64(r1)
#ifdef CONFIG_PPC_PASEMI_CPUFREQ
std r3, 48(r1)
/* Only do power savings when in astate 0 */
bl check_astate
cmpwi r3,0
bne 1f
ld r3, 48(r1)
#endif
LOAD_REG_IMMEDIATE(r6,MSR_DR|MSR_IR|MSR_ME|MSR_EE)
mfmsr r4
andc r5,r4,r6
mtmsrd r5,0
mtctr r3
bctrl
mtmsrd r4,0
1: addi r1,r1,64
ld r0,16(r1)
mtlr r0
blr