src/target/cortex_m3.h

   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  *   This program is free software; you can redistribute it and/or modify  *
  12  *   it under the terms of the GNU General Public License as published by  *
  13  *   the Free Software Foundation; either version 2 of the License, or     *
  14  *   (at your option) any later version.                                   *
  15  *                                                                         *
  16  *   This program is distributed in the hope that it will be useful,       *
  17  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  18  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  19  *   GNU General Public License for more details.                          *
  20  *                                                                         *
  21  *   You should have received a copy of the GNU General Public License     *
  22  *   along with this program; if not, write to the                         *
  23  *   Free Software Foundation, Inc.,                                       *
  24  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  25  ***************************************************************************/
  26 #ifndef CORTEX_M3_H
  27 #define CORTEX_M3_H
  28
  29 #include "register.h"
  30 #include "target.h"
  31 #include "armv7m.h"
  32 #include "cortex_swjdp.h"
  33
  34 extern char* cortex_m3_state_strings[];
  35
  36 #define CORTEX_M3_COMMON_MAGIC 0x1A451A45
  37
  38 #define SYSTEM_CONTROL_BASE 0x400FE000
  39
  40 #define CPUID           0xE000ED00
  41 /* Debug Control Block */
  42 #define DCB_DHCSR       0xE000EDF0
  43 #define DCB_DCRSR       0xE000EDF4
  44 #define DCB_DCRDR       0xE000EDF8
  45 #define DCB_DEMCR       0xE000EDFC
  46
  47 #define DCRSR_WnR       (1<<16)
  48
  49 #define DWT_CTRL        0xE0001000
  50 #define DWT_COMP0       0xE0001020
  51 #define DWT_MASK0       0xE0001024
  52 #define DWT_FUNCTION0   0xE0001028
  53
  54 #define FP_CTRL         0xE0002000
  55 #define FP_REMAP        0xE0002004
  56 #define FP_COMP0        0xE0002008
  57 #define FP_COMP1        0xE000200C
  58 #define FP_COMP2        0xE0002010
  59 #define FP_COMP3        0xE0002014
  60 #define FP_COMP4        0xE0002018
  61 #define FP_COMP5        0xE000201C
  62 #define FP_COMP6        0xE0002020
  63 #define FP_COMP7        0xE0002024
  64
  65 #define DWT_CTRL        0xE0001000
  66
  67 /* DCB_DHCSR bit and field definitions */
  68 #define DBGKEY          (0xA05F<<16)
  69 #define C_DEBUGEN       (1<<0)
  70 #define C_HALT          (1<<1)
  71 #define C_STEP          (1<<2)
  72 #define C_MASKINTS      (1<<3)
  73 #define S_REGRDY        (1<<16)
  74 #define S_HALT          (1<<17)
  75 #define S_SLEEP         (1<<18)
  76 #define S_LOCKUP        (1<<19)
  77 #define S_RETIRE_ST     (1<<24)
  78 #define S_RESET_ST      (1<<25)
  79
  80 /* DCB_DEMCR bit and field definitions */
  81 #define TRCENA                  (1<<24)
  82 #define VC_HARDERR              (1<<10)
  83 #define VC_BUSERR               (1<<8)
  84 #define VC_CORERESET    (1<<0)
  85
  86 #define NVIC_ICTR               0xE000E004
  87 #define NVIC_ISE0               0xE000E100
  88 #define NVIC_ICSR               0xE000ED04
  89 #define NVIC_AIRCR              0xE000ED0C
  90 #define NVIC_SHCSR              0xE000ED24
  91 #define NVIC_CFSR               0xE000ED28
  92 #define NVIC_MMFSRb             0xE000ED28
  93 #define NVIC_BFSRb              0xE000ED29
  94 #define NVIC_USFSRh             0xE000ED2A
  95 #define NVIC_HFSR               0xE000ED2C
  96 #define NVIC_DFSR               0xE000ED30
  97 #define NVIC_MMFAR              0xE000ED34
  98 #define NVIC_BFAR               0xE000ED38
  99
 100 /* NVIC_AIRCR bits */
 101 #define AIRCR_VECTKEY           (0x5FA<<16)
 102 #define AIRCR_SYSRESETREQ       (1<<2)
 103 #define AIRCR_VECTCLRACTIVE     (1<<1)
 104 #define AIRCR_VECTRESET         (1<<0)
 105 /* NVIC_SHCSR bits */
 106 #define SHCSR_BUSFAULTENA       (1<<17)
 107 /* NVIC_DFSR bits */
 108 #define DFSR_HALTED                     1
 109 #define DFSR_BKPT                       2
 110 #define DFSR_DWTTRAP            4
 111 #define DFSR_VCATCH                     8
 112
 113 #define FPCR_CODE 0
 114 #define FPCR_LITERAL 1
 115 #define FPCR_REPLACE_REMAP  (0<<30)
 116 #define FPCR_REPLACE_BKPT_LOW  (1<<30)
 117 #define FPCR_REPLACE_BKPT_HIGH  (2<<30)
 118 #define FPCR_REPLACE_BKPT_BOTH  (3<<30)
 119
 120 typedef struct  cortex_m3_fp_comparator_s
 121 {
 122         int used;
 123         int type;
 124         u32 fpcr_value;
 125         u32 fpcr_address;
 126 } cortex_m3_fp_comparator_t;
 127
 128 typedef struct  cortex_m3_dwt_comparator_s
 129 {
 130         int used;
 131         u32 comp;
 132         u32 mask;
 133         u32 function;
 134         u32 dwt_comparator_address;
 135 } cortex_m3_dwt_comparator_t;
 136
 137 typedef struct cortex_m3_common_s
 138 {
 139         int common_magic;
 140         arm_jtag_t jtag_info;
 141
 142         /* Context information */
 143         u32 dcb_dhcsr;
 144         u32 nvic_dfsr;  /* Debug Fault Status Register - shows reason for debug halt */
 145         u32 nvic_icsr;  /* Interrupt Control State Register - shows active and pending IRQ */
 146
 147         /* Flash Patch and Breakpoint (FPB) */
 148         int fp_num_lit;
 149         int fp_num_code;
 150         int fp_code_available;
 151         int fpb_enabled;
 152         int auto_bp_type;
 153         cortex_m3_fp_comparator_t *fp_comparator_list;
 154
 155         /* Data Watchpoint and Trace (DWT) */
 156         int dwt_num_comp;
 157         int dwt_comp_available;
 158         cortex_m3_dwt_comparator_t *dwt_comparator_list;
 159
 160         /* Interrupts */
 161         int intlinesnum;
 162         u32 *intsetenable;
 163
 164         armv7m_common_t armv7m;
 165         swjdp_common_t swjdp_info;
 166         void *arch_info;
 167 } cortex_m3_common_t;
 168
 169 extern void cortex_m3_build_reg_cache(target_t *target);
 170
 171 int cortex_m3_poll(target_t *target);
 172 int cortex_m3_halt(target_t *target);
 173 int cortex_m3_resume(struct target_s *target, int current, u32 address, int handle_breakpoints, int debug_execution);
 174 int cortex_m3_step(struct target_s *target, int current, u32 address, int handle_breakpoints);
 175
 176 int cortex_m3_assert_reset(target_t *target);
 177 int cortex_m3_deassert_reset(target_t *target);
 178 int cortex_m3_soft_reset_halt(struct target_s *target);
 179
 180 int cortex_m3_read_memory(struct target_s *target, u32 address, u32 size, u32 count, u8 *buffer);
 181 int cortex_m3_write_memory(struct target_s *target, u32 address, u32 size, u32 count, u8 *buffer);
 182 int cortex_m3_bulk_write_memory(target_t *target, u32 address, u32 count, u8 *buffer);
 183
 184 int cortex_m3_set_breakpoint(struct target_s *target, breakpoint_t *breakpoint);
 185 int cortex_m3_unset_breakpoint(struct target_s *target, breakpoint_t *breakpoint);
 186 int cortex_m3_add_breakpoint(struct target_s *target, breakpoint_t *breakpoint);
 187 int cortex_m3_remove_breakpoint(struct target_s *target, breakpoint_t *breakpoint);
 188 int cortex_m3_add_watchpoint(struct target_s *target, watchpoint_t *watchpoint);
 189 int cortex_m3_remove_watchpoint(struct target_s *target, watchpoint_t *watchpoint);
 190
 191 extern int cortex_m3_register_commands(struct command_context_s *cmd_ctx);
 192 extern int cortex_m3_init_arch_info(target_t *target, cortex_m3_common_t *cortex_m3, jtag_tap_t *tap);
 193
 194 #endif /* CORTEX_M3_H */