1 /***************************************************************************
2 * Copyright (C) 2005 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
5 * Copyright (C) 2007,2008 Øyvind Harboe *
6 * oyvind.harboe@zylin.com *
8 * This program is free software; you can redistribute it and/or modify *
9 * it under the terms of the GNU General Public License as published by *
10 * the Free Software Foundation; either version 2 of the License, or *
11 * (at your option) any later version. *
13 * This program is distributed in the hope that it will be useful, *
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
16 * GNU General Public License for more details. *
18 * You should have received a copy of the GNU General Public License *
19 * along with this program; if not, write to the *
20 * Free Software Foundation, Inc., *
21 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
22 ***************************************************************************/
26 #include <target/armv4_5.h>
27 #include <target/armv4_5_mmu.h>
28 #include <target/trace.h>
30 #define XSCALE_COMMON_MAGIC 0x58534341
32 /* These four JTAG instructions are architecturally defined.
33 * Lengths are core-specific; originally 5 bits, later 7.
35 #define XSCALE_DBGRX 0x02
36 #define XSCALE_DBGTX 0x10
37 #define XSCALE_LDIC 0x07
38 #define XSCALE_SELDCSR 0x09
40 /* Possible CPU types */
41 #define XSCALE_IXP4XX_PXA2XX 0x0
42 #define XSCALE_PXA3XX 0x4
44 enum xscale_debug_reason
46 XSCALE_DBG_REASON_GENERIC
,
47 XSCALE_DBG_REASON_RESET
,
48 XSCALE_DBG_REASON_TB_FULL
,
51 enum xscale_trace_entry_type
53 XSCALE_TRACE_MESSAGE
= 0x0,
54 XSCALE_TRACE_ADDRESS
= 0x1,
57 struct xscale_trace_entry
60 enum xscale_trace_entry_type type
;
63 struct xscale_trace_data
65 struct xscale_trace_entry
*entries
;
69 uint32_t last_instruction
;
70 struct xscale_trace_data
*next
;
75 trace_status_t capture_status
; /* current state of capture run */
76 struct image
*image
; /* source for target opcodes */
77 struct xscale_trace_data
*data
; /* linked list of collected trace data */
78 int buffer_enabled
; /* whether trace buffer is enabled */
79 int buffer_fill
; /* maximum number of trace runs to read (-1 for wrap-around) */
82 armv4_5_state_t core_state
; /* current core state (ARM, Thumb, Jazelle) */
87 /* armv4/5 common stuff */
88 struct arm armv4_5_common
;
92 /* XScale registers (CP15, DBG) */
93 struct reg_cache
*reg_cache
;
95 /* current state of the debug handler */
96 uint32_t handler_address
;
98 /* target-endian buffers with exception vectors */
99 uint32_t low_vectors
[8];
100 uint32_t high_vectors
[8];
102 /* static low vectors */
103 uint8_t static_low_vectors_set
; /* bit field with static vectors set by the user */
104 uint8_t static_high_vectors_set
; /* bit field with static vectors set by the user */
105 uint32_t static_low_vectors
[8];
106 uint32_t static_high_vectors
[8];
108 /* DCache cleaning */
109 uint32_t cache_clean_address
;
111 /* whether hold_rst and ext_dbg_break should be set */
113 int external_debug_break
;
115 /* breakpoint / watchpoint handling */
125 uint8_t vector_catch
;
127 struct xscale_trace trace
;
129 int arch_debug_reason
;
132 struct armv4_5_mmu_common armv4_5_mmu
;
133 uint32_t cp15_control_reg
;
135 int fast_memory_access
;
141 static inline struct xscale_common
*
142 target_to_xscale(struct target
*target
)
144 return container_of(target
->arch_info
, struct xscale_common
,
150 int dbg_handler_number
;
151 struct target
*target
;
156 XSCALE_MAINID
, /* 0 */
166 XSCALE_IBCR0
, /* 10 */
180 #define ERROR_XSCALE_NO_TRACE_DATA (-1500)
182 #endif /* XSCALE_H */