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   1 /***************************************************************************
   2  *   Copyright (C) 2005 by Dominic Rath                                    *
   3  *   Dominic.Rath@gmx.de                                                   *
   4  *                                                                         *
   5  *   Copyright (C) 2006 by Magnus Lundin                                   *
   6  *   lundin@mlu.mine.nu                                                    *
   7  *                                                                         *
   8  *   Copyright (C) 2008 by Spencer Oliver                                  *
   9  *   spen@spen-soft.co.uk                                                  *
  10  *                                                                         *
  11  *   Copyright (C) 2009 by Dirk Behme                                      *
  12  *   dirk.behme@gmail.com - copy from cortex_m3                            *
  13  *                                                                         *
  14  *   This program is free software; you can redistribute it and/or modify  *
  15  *   it under the terms of the GNU General Public License as published by  *
  16  *   the Free Software Foundation; either version 2 of the License, or     *
  17  *   (at your option) any later version.                                   *
  18  *                                                                         *
  19  *   This program is distributed in the hope that it will be useful,       *
  20  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  21  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  22  *   GNU General Public License for more details.                          *
  23  *                                                                         *
  24  *   You should have received a copy of the GNU General Public License     *
  25  *   along with this program; if not, write to the                         *
  26  *   Free Software Foundation, Inc.,                                       *
  27  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  28  ***************************************************************************/
  29 #ifndef CORTEX_A8_H
  30 #define CORTEX_A8_H
  31
  32 #include "target.h"
  33 #include "armv7a.h"
  34
  35 extern char* cortex_a8_state_strings[];
  36
  37 #define CORTEX_A8_COMMON_MAGIC 0x411fc082
  38
  39 #define CPUID           0x54011D00
  40 /* Debug Control Block */
  41 #define CPUDBG_DIDR             0x000
  42 #define CPUDBG_WFAR             0x018
  43 #define CPUDBG_VCR      0x01C
  44 #define CPUDBG_ECR      0x024
  45 #define CPUDBG_DSCCR    0x028
  46 #define CPUDBG_DTRRX    0x080
  47 #define CPUDBG_ITR      0x084
  48 #define CPUDBG_DSCR     0x088
  49 #define CPUDBG_DTRTX    0x08c
  50 #define CPUDBG_DRCR     0x090
  51 #define CPUDBG_BVR_BASE 0x100
  52 #define CPUDBG_BCR_BASE 0x140
  53 #define CPUDBG_WVR_BASE 0x180
  54 #define CPUDBG_WCR_BASE 0x1C0
  55
  56 #define CPUDBG_OSLAR    0x300
  57 #define CPUDBG_OSLSR    0x304
  58 #define CPUDBG_OSSRR    0x308
  59
  60 #define CPUDBG_PRCR     0x310
  61 #define CPUDBG_PRSR     0x314
  62
  63 #define CPUDBG_CPUID    0xD00
  64 #define CPUDBG_CTYPR    0xD04
  65 #define CPUDBG_TTYPR    0xD0C
  66 #define CPUDBG_LOCKACCESS 0xFB0
  67 #define CPUDBG_LOCKSTATUS 0xFB4
  68 #define CPUDBG_AUTHSTATUS 0xFB8
  69
  70 #define BRP_NORMAL 0
  71 #define BRP_CONTEXT 1
  72
  73 /* DSCR Bit offset */
  74 #define DSCR_CORE_HALTED                0
  75 #define DSCR_CORE_RESTARTED     1
  76 #define DSCR_EXT_INT_EN                 13
  77 #define DSCR_HALT_DBG_MODE              14
  78 #define DSCR_MON_DBG_MODE               15
  79 #define DSCR_INSTR_COMP                 24
  80 #define DSCR_DTR_TX_FULL                29
  81 #define DSCR_DTR_RX_FULL                30
  82
  83 struct cortex_a8_brp
  84 {
  85         int used;
  86         int type;
  87         uint32_t value;
  88         uint32_t control;
  89         uint8_t         BRPn;
  90 };
  91
  92 struct cortex_a8_wrp
  93 {
  94         int used;
  95         int type;
  96         uint32_t value;
  97         uint32_t control;
  98         uint8_t         WRPn;
  99 };
 100
 101 struct cortex_a8_common
 102 {
 103         int common_magic;
 104         struct arm_jtag jtag_info;
 105
 106         /* Context information */
 107         uint32_t cpudbg_dscr;
 108         uint32_t nvic_dfsr;  /* Debug Fault Status Register - shows reason for debug halt */
 109         uint32_t nvic_icsr;  /* Interrupt Control State Register - shows active and pending IRQ */
 110
 111         /* Saved cp15 registers */
 112         uint32_t cp15_control_reg;
 113         uint32_t cp15_aux_control_reg;
 114
 115         /* Breakpoint register pairs */
 116         int brp_num_context;
 117         int brp_num;
 118         int brp_num_available;
 119 //      int brp_enabled;
 120         struct cortex_a8_brp *brp_list;
 121
 122         /* Watchpoint register pairs */
 123         int wrp_num;
 124         int wrp_num_available;
 125         struct cortex_a8_wrp *wrp_list;
 126
 127         /* Interrupts */
 128         int intlinesnum;
 129         uint32_t *intsetenable;
 130
 131         /* Use cortex_a8_read_regs_through_mem for fast register reads */
 132         int fast_reg_read;
 133
 134         struct armv7a_common armv7a_common;
 135 };
 136
 137 static inline struct cortex_a8_common *
 138 target_to_cortex_a8(struct target *target)
 139 {
 140         return container_of(target->arch_info, struct cortex_a8_common,
 141                         armv7a_common.armv4_5_common);
 142 }
 143
 144 int cortex_a8_init_arch_info(struct target *target,
 145                 struct cortex_a8_common *cortex_a8, struct jtag_tap *tap);
 146
 147 #endif /* CORTEX_A8_H */