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/***************************************************************************
* Copyright (C) 2005 by Dominic Rath *
* Dominic.Rath@gmx.de *
* *
* Copyright (C) 2007,2008 Øyvind Harboe *
* oyvind.harboe@zylin.com *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* 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. *
***************************************************************************/
#ifndef XSCALE_H
#define XSCALE_H
#include "armv4_5.h"
#include "armv4_5_mmu.h"
#include "trace.h"
#define XSCALE_COMMON_MAGIC 0x58534341
typedef struct xscale_jtag_s
{
/* position in JTAG scan chain */
jtag_tap_t *tap;
/* IR length and instructions */
int ir_length;
u32 dbgrx;
u32 dbgtx;
u32 ldic;
u32 dcsr;
} xscale_jtag_t;
enum xscale_debug_reason
{
XSCALE_DBG_REASON_GENERIC,
XSCALE_DBG_REASON_RESET,
XSCALE_DBG_REASON_TB_FULL,
};
enum xscale_trace_entry_type
{
XSCALE_TRACE_MESSAGE = 0x0,
XSCALE_TRACE_ADDRESS = 0x1,
};
typedef struct xscale_trace_entry_s
{
uint8_t data;
enum xscale_trace_entry_type type;
} xscale_trace_entry_t;
typedef struct xscale_trace_data_s
{
xscale_trace_entry_t *entries;
int depth;
u32 chkpt0;
u32 chkpt1;
u32 last_instruction;
struct xscale_trace_data_s *next;
} xscale_trace_data_t;
typedef struct xscale_trace_s
{
trace_status_t capture_status; /* current state of capture run */
struct image_s *image; /* source for target opcodes */
xscale_trace_data_t *data; /* linked list of collected trace data */
int buffer_enabled; /* whether trace buffer is enabled */
int buffer_fill; /* maximum number of trace runs to read (-1 for wrap-around) */
int pc_ok;
u32 current_pc;
armv4_5_state_t core_state; /* current core state (ARM, Thumb, Jazelle) */
} xscale_trace_t;
typedef struct xscale_common_s
{
int common_magic;
/* XScale registers (CP15, DBG) */
reg_cache_t *reg_cache;
/* pxa250, pxa255, pxa27x, ixp42x, ... */
char *variant;
xscale_jtag_t jtag_info;
/* current state of the debug handler */
int handler_installed;
int handler_running;
u32 handler_address;
/* target-endian buffers with exception vectors */
u32 low_vectors[8];
u32 high_vectors[8];
/* static low vectors */
uint8_t static_low_vectors_set; /* bit field with static vectors set by the user */
uint8_t static_high_vectors_set; /* bit field with static vectors set by the user */
u32 static_low_vectors[8];
u32 static_high_vectors[8];
/* DCache cleaning */
u32 cache_clean_address;
/* whether hold_rst and ext_dbg_break should be set */
int hold_rst;
int external_debug_break;
/* breakpoint / watchpoint handling */
int dbr_available;
int dbr0_used;
int dbr1_used;
int ibcr_available;
int ibcr0_used;
int ibcr1_used;
u32 arm_bkpt;
uint16_t thumb_bkpt;
uint8_t vector_catch;
xscale_trace_t trace;
int arch_debug_reason;
/* armv4/5 common stuff */
armv4_5_common_t armv4_5_common;
/* MMU/Caches */
armv4_5_mmu_common_t armv4_5_mmu;
u32 cp15_control_reg;
/* possible future enhancements that go beyond XScale common stuff */
void *arch_info;
int fast_memory_access;
} xscale_common_t;
typedef struct xscale_reg_s
{
int dbg_handler_number;
target_t *target;
} xscale_reg_t;
enum
{
XSCALE_MAINID, /* 0 */
XSCALE_CACHETYPE,
XSCALE_CTRL,
XSCALE_AUXCTRL,
XSCALE_TTB,
XSCALE_DAC,
XSCALE_FSR,
XSCALE_FAR,
XSCALE_PID,
XSCALE_CPACCESS,
XSCALE_IBCR0, /* 10 */
XSCALE_IBCR1,
XSCALE_DBR0,
XSCALE_DBR1,
XSCALE_DBCON,
XSCALE_TBREG,
XSCALE_CHKPT0,
XSCALE_CHKPT1,
XSCALE_DCSR,
XSCALE_TX,
XSCALE_RX, /* 20 */
XSCALE_TXRXCTRL,
};
#define ERROR_XSCALE_NO_TRACE_DATA (-1500)
#endif /* XSCALE_H */
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