src/target/xscale.h

   1 /***************************************************************************
   2  *   Copyright (C) 2005 by Dominic Rath                                    *
   3  *   Dominic.Rath@gmx.de                                                   *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  19  ***************************************************************************/
  20 #ifndef XSCALE_H
  21 #define XSCALE_H
  22
  23 #include "target.h"
  24 #include "register.h"
  25 #include "armv4_5.h"
  26 #include "armv4_5_mmu.h"
  27
  28 #define XSCALE_COMMON_MAGIC 0x58534341
  29
  30 typedef struct xscale_jtag_s
  31 {
  32         /* position in JTAG scan chain */
  33         int chain_pos;
  34
  35         /* IR length and instructions */
  36         int ir_length;
  37         u32 dbgrx;
  38         u32 dbgtx;
  39         u32 ldic;
  40         u32 dcsr;
  41 } xscale_jtag_t;
  42
  43 enum xscale_debug_reason
  44 {
  45         XSCALE_DBG_REASON_GENERIC,
  46         XSCALE_DBG_REASON_RESET,
  47         XSCALE_DBG_REASON_TB_FULL,
  48 };
  49
  50 typedef struct xscale_common_s
  51 {
  52         int common_magic;
  53
  54         /* XScale registers (CP15, DBG) */
  55         reg_cache_t *reg_cache;
  56
  57         /* pxa250, pxa255, pxa27x, ixp42x, ... */
  58         char *variant;
  59
  60         xscale_jtag_t jtag_info;
  61
  62         /* current state of the debug handler */
  63         int handler_installed;
  64         int handler_running;
  65         u32 handler_address;
  66
  67         /* target-endian buffers with exception vectors */
  68         u32 low_vectors[8];
  69         u32 high_vectors[8];
  70
  71         /* static low vectors */
  72         u8 static_low_vectors_set;      /* bit field with static vectors set by the user */
  73         u8 static_high_vectors_set; /* bit field with static vectors set by the user */
  74         u32 static_low_vectors[8];
  75         u32 static_high_vectors[8];
  76
  77         /* DCache cleaning */
  78         u32 cache_clean_address;
  79
  80         /* whether hold_rst and ext_dbg_break should be set */
  81         int hold_rst;
  82         int external_debug_break;
  83
  84         /* breakpoint / watchpoint handling */
  85         int force_hw_bkpts;
  86         int dbr_available;
  87         int dbr0_used;
  88         int dbr1_used;
  89         int ibcr_available;
  90         int ibcr0_used;
  91         int     ibcr1_used;
  92         u32 arm_bkpt;
  93         u16 thumb_bkpt;
  94
  95         u8 vector_catch;
  96
  97         int trace_buffer_enabled;
  98         int trace_buffer_fill;
  99
 100         int arch_debug_reason;
 101
 102         /* armv4/5 common stuff */
 103         armv4_5_common_t armv4_5_common;
 104
 105         /* MMU/Caches */
 106         armv4_5_mmu_common_t armv4_5_mmu;
 107         u32 cp15_control_reg;
 108
 109         /* possible future enhancements that go beyond XScale common stuff */
 110         void *arch_info;
 111 } xscale_common_t;
 112
 113 typedef struct xscale_reg_s
 114 {
 115         int dbg_handler_number;
 116         target_t *target;
 117 } xscale_reg_t;
 118
 119 enum
 120 {
 121         XSCALE_MAINID,          /* 0 */
 122         XSCALE_CACHETYPE,
 123         XSCALE_CTRL,
 124         XSCALE_AUXCTRL,
 125         XSCALE_TTB,
 126         XSCALE_DAC,
 127         XSCALE_FSR,
 128         XSCALE_FAR,
 129         XSCALE_PID,
 130         XSCALE_CPACCESS,
 131         XSCALE_IBCR0,           /* 10 */
 132         XSCALE_IBCR1,
 133         XSCALE_DBR0,
 134         XSCALE_DBR1,
 135         XSCALE_DBCON,
 136         XSCALE_TBREG,
 137         XSCALE_CHKPT0,
 138         XSCALE_CHKPT1,
 139         XSCALE_DCSR,
 140         XSCALE_TX,
 141         XSCALE_RX,                      /* 20 */
 142         XSCALE_TXRXCTRL,
 143 };
 144
 145 #endif /* XSCALE_H */