aboutsummaryrefslogtreecommitdiff
path: root/src/target/xscale.h
blob: f20074fdb9ec1ea77772db34350e23872d3617bf (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
/***************************************************************************
 *   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 "arm.h"
#include "armv4_5_mmu.h"
#include "trace.h"

#define	XSCALE_COMMON_MAGIC 0x58534341

/* These four JTAG instructions are architecturally defined.
 * Lengths are core-specific; originally 5 bits, later 7.
 */
#define XSCALE_DBGRX	0x02
#define XSCALE_DBGTX	0x10
#define XSCALE_LDIC	0x07
#define XSCALE_SELDCSR	0x09

/* Possible CPU types */
#define	XSCALE_IXP4XX_PXA2XX	0x0
#define	XSCALE_PXA3XX		0x4

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,
};

struct xscale_trace_entry
{
	uint8_t data;
	enum xscale_trace_entry_type type;
};

struct xscale_trace_data
{
	struct xscale_trace_entry *entries;
	int depth;
	uint32_t chkpt0;
	uint32_t chkpt1;
	uint32_t last_instruction;
	struct xscale_trace_data *next;
};

struct xscale_trace
{
	trace_status_t capture_status;	/* current state of capture run */
	struct image *image;					/* source for target opcodes */
	struct xscale_trace_data *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;
	uint32_t current_pc;
	enum arm_state core_state;	/* current core state (ARM, Thumb) */
};

struct xscale_common
{
	/* armv4/5 common stuff */
	struct arm armv4_5_common;

	int common_magic;

	/* XScale registers (CP15, DBG) */
	struct reg_cache *reg_cache;

	/* current state of the debug handler */
	uint32_t handler_address;

	/* target-endian buffers with exception vectors */
	uint32_t low_vectors[8];
	uint32_t 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 */
	uint32_t static_low_vectors[8];
	uint32_t static_high_vectors[8];

	/* DCache cleaning */
	uint32_t 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;
	uint32_t arm_bkpt;
	uint16_t thumb_bkpt;

	uint8_t vector_catch;

	struct xscale_trace trace;

	int arch_debug_reason;

	/* MMU/Caches */
	struct armv4_5_mmu_common armv4_5_mmu;
	uint32_t cp15_control_reg;

	int fast_memory_access;

	/* CPU variant */
	int xscale_variant;
};

static inline struct xscale_common *
target_to_xscale(struct target *target)
{
	return container_of(target->arch_info, struct xscale_common,
			armv4_5_common);
}

struct xscale_reg
{
	int dbg_handler_number;
	struct target *target;
};

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 */