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/*
* Copyright (c) 2012, ARM Limited. All rights reserved.
*
* Redistribution and use in source and binary forms, with
* or without modification, are permitted provided that the
* following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the
* above copyright notice, this list of conditions and
* the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of ARM nor the names of its
* contributors may be used to endorse or promote products
* derived from this software without specific prior written
* permission.
*/
#ifndef __CONTEXT_H__
#define __CONTEXT_H__
#include "misc.h"
typedef struct {
unsigned vcr;
unsigned eacr;
unsigned claim;
unsigned claimclr;
unsigned dtrrx_e;
unsigned dtrtx_e;
unsigned dscr_e;
unsigned wfar;
unsigned bvr[16];
unsigned bcr[16];
unsigned wvr[16];
unsigned wcr[16];
unsigned bxvr[16];
} debug_context_t; /* total size 88 * 4 = 352 bytes */
typedef struct ns_gic_cpu_context {
unsigned int gic_cpu_if_regs[32]; /* GIC context local to the CPU */
unsigned int gic_dist_if_pvt_regs[32]; /* GIC SGI/PPI context local to the CPU */
} gic_cpu_context;
typedef struct fault_regs {
unsigned dfar;
unsigned ifar;
unsigned ifsr;
unsigned dfsr;
unsigned adfsr;
unsigned aifsr;
} cp15_fault_regs;
typedef struct ns_banked_cp15_context {
unsigned int cp15_misc_regs[2]; /* cp15 miscellaneous registers */
unsigned int cp15_ctrl_regs[20]; /* cp15 control registers */
unsigned int cp15_mmu_regs[16]; /* cp15 mmu registers */
cp15_fault_regs ns_cp15_fault_regs; /* cp15 fault status registers */
} banked_cp15_context;
typedef struct gen_tmr_ctx {
unsigned cntfrq;
unsigned long long cntvoff;
unsigned cnthctl;
unsigned cntkctl;
unsigned long long cntp_cval;
unsigned cntp_tval;
unsigned cntp_ctl;
unsigned long long cntv_cval;
unsigned cntv_tval;
unsigned cntv_ctl;
unsigned long long cnthp_cval;
unsigned cnthp_tval;
unsigned cnthp_ctl;
} generic_timer_context;
typedef struct ns_cpu_context {
unsigned int banked_cpu_regs[32]; /* Banked cpu registers */
banked_cp15_context banked_cp15_regs; /* Per cpu banked cp15 context */
generic_timer_context cp15_timer_ctx; /* Global counter registers if accessible in NS world */
gic_cpu_context gic_cpu_ctx; /* Per cpu GIC distributor and interface context */
unsigned int endianess; /* Per cpu endianess */
unsigned int vfp_regs[34]; /* Dummy entry for VFP context. */
debug_context_t debug_ctx; /* Entry for Debug context. */
} cpu_context;
typedef struct ns_global_context {
unsigned int gic_dist_if_regs[512]; /* GIC distributor context to be saved by the last cpu. */
unsigned int generic_timer_regs[8]; /* Global timers if the NS world has access to them */
} global_context;
/*
* Structure to preserve the OS mmu and stack state for swtich from OS to Switcher
* context handler.
*/
typedef struct os_state {
unsigned sctlr;
unsigned dacr;
unsigned ttbr0;
unsigned nmrr;
unsigned prrr;
} os_state;
/*
* Top level structure to hold the complete context of a core in a cluster in
* a multi-cluster system
*/
typedef struct core_context {
/*
* Non-secure context save area
*/
cpu_context ns_cpu_ctx;
} core_context;
/*
* Top level structure to hold the complete context of a cluster in a multi-
* cluster system
*/
typedef struct cluster_context {
core_context core[MAX_CORES];
unsigned num_cores;
global_context ns_cluster_ctx;
} cluster_context;
/*
* Top level structure to hold the complete context of a multi cluster system
*/
typedef struct system_context {
cluster_context cluster;
unsigned num_clusters;
unsigned warm_reset;
} system_context;
/*
* Constants to indicate whether context manipulation is done
* as per a hotplug or cluster switch request.
*/
#define OP_TYPE_SWITCH 0x1
#define OP_TYPE_HP 0x2
extern unsigned find_restore_op_type(void);
extern void save_context(unsigned, unsigned);
extern void restore_context(unsigned, unsigned);
extern void save_generic_timers(generic_timer_context *);
extern void restore_eagle_timers(generic_timer_context *);
extern void save_vfp(unsigned *);
extern void restore_vfp(unsigned *);
extern void enable_trigger(unsigned);
#endif /* __CONTEXT_H__ */
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