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linux-next/arch/arm/include/asm/glue-proc.h
Shawn Guo ddd0c53018 ARM: 8103/1: save/restore Cortex-A9 CP15 registers on suspend/resume 
The CP15 diagnostic register holds ARM errata bits on Cortex-A9, so it
needs to be saved/restored on suspend/resume.  Otherwise, the
effectiveness of errata workaround gets lost together with diagnostic
register bit across suspend/resume cycle.  And the CP15 power control
register of Cortex-A9 shares the same problem.

The patch adds a couple of Cortex-A9 specific suspend/resume functions
to save/restore these two Cortex-A9 CP15 registers across the
suspend/resume cycle.

Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2014-07-18 12:29:37 +01:00

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/*
* arch/arm/include/asm/glue-proc.h
*
* Copyright (C) 1997-1999 Russell King
* Copyright (C) 2000 Deep Blue Solutions Ltd
*
* 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.
*/
#ifndef ASM_GLUE_PROC_H
#define ASM_GLUE_PROC_H
#include <asm/glue.h>
/*
* Work out if we need multiple CPU support
*/
#undef MULTI_CPU
#undef CPU_NAME
/*
* CPU_NAME - the prefix for CPU related functions
*/
#ifdef CONFIG_CPU_ARM7TDMI
# ifdef CPU_NAME
# undef MULTI_CPU
# define MULTI_CPU
# else
# define CPU_NAME cpu_arm7tdmi
# endif
#endif
#ifdef CONFIG_CPU_ARM720T
# ifdef CPU_NAME
# undef MULTI_CPU
# define MULTI_CPU
# else
# define CPU_NAME cpu_arm720
# endif
#endif
#ifdef CONFIG_CPU_ARM740T
# ifdef CPU_NAME
# undef MULTI_CPU
# define MULTI_CPU
# else
# define CPU_NAME cpu_arm740
# endif
#endif
#ifdef CONFIG_CPU_ARM9TDMI
# ifdef CPU_NAME
# undef MULTI_CPU
# define MULTI_CPU
# else
# define CPU_NAME cpu_arm9tdmi
# endif
#endif
#ifdef CONFIG_CPU_ARM920T
# ifdef CPU_NAME
# undef MULTI_CPU
# define MULTI_CPU
# else
# define CPU_NAME cpu_arm920
# endif
#endif
#ifdef CONFIG_CPU_ARM922T
# ifdef CPU_NAME
# undef MULTI_CPU
# define MULTI_CPU
# else
# define CPU_NAME cpu_arm922
# endif
#endif
#ifdef CONFIG_CPU_FA526
# ifdef CPU_NAME
# undef MULTI_CPU
# define MULTI_CPU
# else
# define CPU_NAME cpu_fa526
# endif
#endif
#ifdef CONFIG_CPU_ARM925T
# ifdef CPU_NAME
# undef MULTI_CPU
# define MULTI_CPU
# else
# define CPU_NAME cpu_arm925
# endif
#endif
#ifdef CONFIG_CPU_ARM926T
# ifdef CPU_NAME
# undef MULTI_CPU
# define MULTI_CPU
# else
# define CPU_NAME cpu_arm926
# endif
#endif
#ifdef CONFIG_CPU_ARM940T
# ifdef CPU_NAME
# undef MULTI_CPU
# define MULTI_CPU
# else
# define CPU_NAME cpu_arm940
# endif
#endif
#ifdef CONFIG_CPU_ARM946E
# ifdef CPU_NAME
# undef MULTI_CPU
# define MULTI_CPU
# else
# define CPU_NAME cpu_arm946
# endif
#endif
#ifdef CONFIG_CPU_SA110
# ifdef CPU_NAME
# undef MULTI_CPU
# define MULTI_CPU
# else
# define CPU_NAME cpu_sa110
# endif
#endif
#ifdef CONFIG_CPU_SA1100
# ifdef CPU_NAME
# undef MULTI_CPU
# define MULTI_CPU
# else
# define CPU_NAME cpu_sa1100
# endif
#endif
#ifdef CONFIG_CPU_ARM1020
# ifdef CPU_NAME
# undef MULTI_CPU
# define MULTI_CPU
# else
# define CPU_NAME cpu_arm1020
# endif
#endif
#ifdef CONFIG_CPU_ARM1020E
# ifdef CPU_NAME
# undef MULTI_CPU
# define MULTI_CPU
# else
# define CPU_NAME cpu_arm1020e
# endif
#endif
#ifdef CONFIG_CPU_ARM1022
# ifdef CPU_NAME
# undef MULTI_CPU
# define MULTI_CPU
# else
# define CPU_NAME cpu_arm1022
# endif
#endif
#ifdef CONFIG_CPU_ARM1026
# ifdef CPU_NAME
# undef MULTI_CPU
# define MULTI_CPU
# else
# define CPU_NAME cpu_arm1026
# endif
#endif
#ifdef CONFIG_CPU_XSCALE
# ifdef CPU_NAME
# undef MULTI_CPU
# define MULTI_CPU
# else
# define CPU_NAME cpu_xscale
# endif
#endif
#ifdef CONFIG_CPU_XSC3
# ifdef CPU_NAME
# undef MULTI_CPU
# define MULTI_CPU
# else
# define CPU_NAME cpu_xsc3
# endif
#endif
#ifdef CONFIG_CPU_MOHAWK
# ifdef CPU_NAME
# undef MULTI_CPU
# define MULTI_CPU
# else
# define CPU_NAME cpu_mohawk
# endif
#endif
#ifdef CONFIG_CPU_FEROCEON
# ifdef CPU_NAME
# undef MULTI_CPU
# define MULTI_CPU
# else
# define CPU_NAME cpu_feroceon
# endif
#endif
#if defined(CONFIG_CPU_V6) || defined(CONFIG_CPU_V6K)
# ifdef CPU_NAME
# undef MULTI_CPU
# define MULTI_CPU
# else
# define CPU_NAME cpu_v6
# endif
#endif
#ifdef CONFIG_CPU_V7M
# ifdef CPU_NAME
# undef MULTI_CPU
# define MULTI_CPU
# else
# define CPU_NAME cpu_v7m
# endif
#endif
#ifdef CONFIG_CPU_PJ4B
# ifdef CPU_NAME
# undef MULTI_CPU
# define MULTI_CPU
# else
# define CPU_NAME cpu_pj4b
# endif
#endif
#ifdef CONFIG_CPU_V7
/*
* Cortex-A9 needs a different suspend/resume function, so we need
* multiple CPU support for ARMv7 anyway.
*/
# undef MULTI_CPU
# define MULTI_CPU
#endif
#ifndef MULTI_CPU
#define cpu_proc_init __glue(CPU_NAME,_proc_init)
#define cpu_proc_fin __glue(CPU_NAME,_proc_fin)
#define cpu_reset __glue(CPU_NAME,_reset)
#define cpu_do_idle __glue(CPU_NAME,_do_idle)
#define cpu_dcache_clean_area __glue(CPU_NAME,_dcache_clean_area)
#define cpu_do_switch_mm __glue(CPU_NAME,_switch_mm)
#define cpu_set_pte_ext __glue(CPU_NAME,_set_pte_ext)
#define cpu_suspend_size __glue(CPU_NAME,_suspend_size)
#define cpu_do_suspend __glue(CPU_NAME,_do_suspend)
#define cpu_do_resume __glue(CPU_NAME,_do_resume)
#endif
#endif
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