src/target/xscale.h

   1 /***************************************************************************
   2  *   Copyright (C) 2005 by Dominic Rath                                    *
   3  *   Dominic.Rath@gmx.de                                                   *
   4  *                                                                         *
   5  *   Copyright (C) 2007,2008 Øyvind Harboe                                 *
   6  *   oyvind.harboe@zylin.com                                               *
   7  *                                                                         *
   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.                                   *
  12  *                                                                         *
  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.                          *
  17  *                                                                         *
  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  ***************************************************************************/
  23 #ifndef XSCALE_H
  24 #define XSCALE_H
  25
  26 #include "armv4_5.h"
  27 #include "armv4_5_mmu.h"
  28 #include "trace.h"
  29
  30 #define XSCALE_COMMON_MAGIC 0x58534341
  31
  32 typedef struct xscale_jtag_s
  33 {
  34         /* position in JTAG scan chain */
  35         jtag_tap_t *tap;
  36
  37         /* IR length and instructions */
  38         int ir_length;
  39         u32 dbgrx;
  40         u32 dbgtx;
  41         u32 ldic;
  42         u32 dcsr;
  43 } xscale_jtag_t;
  44
  45 enum xscale_debug_reason
  46 {
  47         XSCALE_DBG_REASON_GENERIC,
  48         XSCALE_DBG_REASON_RESET,
  49         XSCALE_DBG_REASON_TB_FULL,
  50 };
  51
  52 enum xscale_trace_entry_type
  53 {
  54         XSCALE_TRACE_MESSAGE = 0x0,
  55         XSCALE_TRACE_ADDRESS = 0x1,
  56 };
  57
  58 typedef struct xscale_trace_entry_s
  59 {
  60         u8 data;
  61         enum xscale_trace_entry_type type;
  62 } xscale_trace_entry_t;
  63
  64 typedef struct xscale_trace_data_s
  65 {
  66         xscale_trace_entry_t *entries;
  67         int depth;
  68         u32 chkpt0;
  69         u32 chkpt1;
  70         u32 last_instruction;
  71         struct xscale_trace_data_s *next;
  72 } xscale_trace_data_t;
  73
  74 typedef struct xscale_trace_s
  75 {
  76         trace_status_t capture_status;  /* current state of capture run */
  77         struct image_s *image;                                  /* source for target opcodes */
  78         xscale_trace_data_t *data;              /* linked list of collected trace data */
  79         int buffer_enabled;                             /* whether trace buffer is enabled */
  80         int buffer_fill;                                /* maximum number of trace runs to read (-1 for wrap-around) */
  81         int pc_ok;
  82         u32 current_pc;
  83         armv4_5_state_t core_state;             /* current core state (ARM, Thumb, Jazelle) */
  84 } xscale_trace_t;
  85
  86 typedef struct xscale_common_s
  87 {
  88         int common_magic;
  89
  90         /* XScale registers (CP15, DBG) */
  91         reg_cache_t *reg_cache;
  92
  93         /* pxa250, pxa255, pxa27x, ixp42x, ... */
  94         char *variant;
  95
  96         xscale_jtag_t jtag_info;
  97
  98         /* current state of the debug handler */
  99         int handler_installed;
 100         int handler_running;
 101         u32 handler_address;
 102
 103         /* target-endian buffers with exception vectors */
 104         u32 low_vectors[8];
 105         u32 high_vectors[8];
 106
 107         /* static low vectors */
 108         u8 static_low_vectors_set;      /* bit field with static vectors set by the user */
 109         u8 static_high_vectors_set; /* bit field with static vectors set by the user */
 110         u32 static_low_vectors[8];
 111         u32 static_high_vectors[8];
 112
 113         /* DCache cleaning */
 114         u32 cache_clean_address;
 115
 116         /* whether hold_rst and ext_dbg_break should be set */
 117         int hold_rst;
 118         int external_debug_break;
 119
 120         /* breakpoint / watchpoint handling */
 121         int dbr_available;
 122         int dbr0_used;
 123         int dbr1_used;
 124         int ibcr_available;
 125         int ibcr0_used;
 126         int     ibcr1_used;
 127         u32 arm_bkpt;
 128         u16 thumb_bkpt;
 129
 130         u8 vector_catch;
 131
 132         xscale_trace_t trace;
 133
 134         int arch_debug_reason;
 135
 136         /* armv4/5 common stuff */
 137         armv4_5_common_t armv4_5_common;
 138
 139         /* MMU/Caches */
 140         armv4_5_mmu_common_t armv4_5_mmu;
 141         u32 cp15_control_reg;
 142
 143         /* possible future enhancements that go beyond XScale common stuff */
 144         void *arch_info;
 145
 146         int fast_memory_access;
 147 } xscale_common_t;
 148
 149 typedef struct xscale_reg_s
 150 {
 151         int dbg_handler_number;
 152         target_t *target;
 153 } xscale_reg_t;
 154
 155 enum
 156 {
 157         XSCALE_MAINID,          /* 0 */
 158         XSCALE_CACHETYPE,
 159         XSCALE_CTRL,
 160         XSCALE_AUXCTRL,
 161         XSCALE_TTB,
 162         XSCALE_DAC,
 163         XSCALE_FSR,
 164         XSCALE_FAR,
 165         XSCALE_PID,
 166         XSCALE_CPACCESS,
 167         XSCALE_IBCR0,           /* 10 */
 168         XSCALE_IBCR1,
 169         XSCALE_DBR0,
 170         XSCALE_DBR1,
 171         XSCALE_DBCON,
 172         XSCALE_TBREG,
 173         XSCALE_CHKPT0,
 174         XSCALE_CHKPT1,
 175         XSCALE_DCSR,
 176         XSCALE_TX,
 177         XSCALE_RX,                      /* 20 */
 178         XSCALE_TXRXCTRL,
 179 };
 180
 181 #define ERROR_XSCALE_NO_TRACE_DATA      (-1500)
 182
 183 #endif /* XSCALE_H */