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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  *   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 CORTEX_M3_H
  24 #define CORTEX_M3_H
  25
  26 #include "register.h"
  27 #include "target.h"
  28 #include "armv7m.h"
  29 #include "cortex_swjdp.h"
  30
  31 extern char* cortex_m3_state_strings[];
  32
  33 #define CORTEX_M3_COMMON_MAGIC 0x1A451A45
  34
  35 #define SYSTEM_CONTROL_BASE 0x400FE000
  36
  37 #define CPUID           0xE000ED00
  38 /* Debug Control Block */
  39 #define DCB_DHCSR       0xE000EDF0
  40 #define DCB_DCRSR       0xE000EDF4
  41 #define DCB_DCRDR       0xE000EDF8
  42 #define DCB_DEMCR       0xE000EDFC
  43
  44 #define DCRSR_WnR       (1<<16)
  45
  46 #define DWT_CTRL        0xE0001000
  47 #define DWT_COMP0       0xE0001020
  48 #define DWT_MASK0       0xE0001024
  49 #define DWT_FUNCTION0   0xE0001028
  50
  51 #define FP_CTRL         0xE0002000
  52 #define FP_REMAP        0xE0002004
  53 #define FP_COMP0        0xE0002008
  54 #define FP_COMP1        0xE000200C
  55 #define FP_COMP2        0xE0002010
  56 #define FP_COMP3        0xE0002014
  57 #define FP_COMP4        0xE0002018
  58 #define FP_COMP5        0xE000201C
  59 #define FP_COMP6        0xE0002020
  60 #define FP_COMP7        0xE0002024
  61
  62 #define DWT_CTRL        0xE0001000
  63
  64 /* DCB_DHCSR bit and field definitions */
  65 #define DBGKEY          (0xA05F<<16)
  66 #define C_DEBUGEN       (1<<0)
  67 #define C_HALT          (1<<1)
  68 #define C_STEP          (1<<2)
  69 #define C_MASKINTS      (1<<3)
  70 #define S_REGRDY        (1<<16)
  71 #define S_HALT          (1<<17)
  72 #define S_SLEEP         (1<<18)
  73 #define S_LOCKUP        (1<<19)
  74 #define S_RETIRE_ST     (1<<24)
  75 #define S_RESET_ST      (1<<25)
  76
  77 /* DCB_DEMCR bit and field definitions */
  78 #define TRCENA                  (1<<24)
  79 #define VC_HARDERR              (1<<10)
  80 #define VC_BUSERR               (1<<8)
  81 #define VC_CORERESET    (1<<0)
  82
  83 #define NVIC_ICTR               0xE000E004
  84 #define NVIC_ISE0               0xE000E100
  85 #define NVIC_ICSR               0xE000ED04
  86 #define NVIC_AIRCR              0xE000ED0C
  87 #define NVIC_SHCSR              0xE000ED24
  88 #define NVIC_CFSR               0xE000ED28
  89 #define NVIC_MMFSRb             0xE000ED28
  90 #define NVIC_BFSRb              0xE000ED29
  91 #define NVIC_USFSRh             0xE000ED2A
  92 #define NVIC_HFSR               0xE000ED2C
  93 #define NVIC_DFSR               0xE000ED30
  94 #define NVIC_MMFAR              0xE000ED34
  95 #define NVIC_BFAR               0xE000ED38
  96
  97 /* NVIC_AIRCR bits */
  98 #define AIRCR_VECTKEY           (0x5FA<<16)
  99 #define AIRCR_SYSRESETREQ       (1<<2)
 100 #define AIRCR_VECTCLRACTIVE     (1<<1)
 101 #define AIRCR_VECTRESET         (1<<0)
 102 /* NVIC_SHCSR bits */
 103 #define SHCSR_BUSFAULTENA       (1<<17)
 104 /* NVIC_DFSR bits */
 105 #define DFSR_HALTED                     1
 106 #define DFSR_BKPT                       2
 107 #define DFSR_DWTTRAP            4
 108 #define DFSR_VCATCH                     8
 109
 110 #define FPCR_CODE 0
 111 #define FPCR_LITERAL 1
 112 #define FPCR_REPLACE_REMAP  (0<<30)
 113 #define FPCR_REPLACE_BKPT_LOW  (1<<30)
 114 #define FPCR_REPLACE_BKPT_HIGH  (2<<30)
 115 #define FPCR_REPLACE_BKPT_BOTH  (3<<30)
 116
 117 typedef struct  cortex_m3_fp_comparator_s
 118 {
 119         int used;
 120         int type;
 121         u32 fpcr_value;
 122         u32 fpcr_address;
 123 } cortex_m3_fp_comparator_t;
 124
 125 typedef struct  cortex_m3_dwt_comparator_s
 126 {
 127         int used;
 128         u32 comp;
 129         u32 mask;
 130         u32 function;
 131         u32 dwt_comparator_address;
 132 } cortex_m3_dwt_comparator_t;
 133
 134 typedef struct cortex_m3_common_s
 135 {
 136         int common_magic;
 137         arm_jtag_t jtag_info;
 138         char *variant;
 139
 140         /* Context information */
 141         u32 dcb_dhcsr;
 142         u32 nvic_dfsr;  /* Debug Fault Status Register - shows reason for debug halt */
 143         u32 nvic_icsr;  /* Interrupt Control State Register - shows active and pending IRQ */
 144
 145         /* Flash Patch and Breakpoint */
 146         int fp_num_lit;
 147         int fp_num_code;
 148         int fp_code_available;
 149         int auto_bp_type;
 150         cortex_m3_fp_comparator_t *fp_comparator_list;
 151
 152         /* DWT */
 153         int dwt_num_comp;
 154         int dwt_comp_available;
 155         cortex_m3_dwt_comparator_t *dwt_comparator_list;
 156
 157         /* Interrupts */
 158         int intlinesnum;
 159         u32 *intsetenable;
 160
 161         armv7m_common_t armv7m;
 162         swjdp_common_t swjdp_info;
 163         void *arch_info;
 164 } cortex_m3_common_t;
 165
 166 extern void cortex_m3_build_reg_cache(target_t *target);
 167
 168 int cortex_m3_poll(target_t *target);
 169 int cortex_m3_halt(target_t *target);
 170 int cortex_m3_resume(struct target_s *target, int current, u32 address, int handle_breakpoints, int debug_execution);
 171 int cortex_m3_step(struct target_s *target, int current, u32 address, int handle_breakpoints);
 172
 173 int cortex_m3_assert_reset(target_t *target);
 174 int cortex_m3_deassert_reset(target_t *target);
 175 int cortex_m3_soft_reset_halt(struct target_s *target);
 176
 177 int cortex_m3_read_memory(struct target_s *target, u32 address, u32 size, u32 count, u8 *buffer);
 178 int cortex_m3_write_memory(struct target_s *target, u32 address, u32 size, u32 count, u8 *buffer);
 179 int cortex_m3_bulk_write_memory(target_t *target, u32 address, u32 count, u8 *buffer);
 180
 181 int cortex_m3_set_breakpoint(struct target_s *target, breakpoint_t *breakpoint);
 182 int cortex_m3_unset_breakpoint(struct target_s *target, breakpoint_t *breakpoint);
 183 int cortex_m3_add_breakpoint(struct target_s *target, breakpoint_t *breakpoint);
 184 int cortex_m3_remove_breakpoint(struct target_s *target, breakpoint_t *breakpoint);
 185 int cortex_m3_add_watchpoint(struct target_s *target, watchpoint_t *watchpoint);
 186 int cortex_m3_remove_watchpoint(struct target_s *target, watchpoint_t *watchpoint);
 187
 188 extern int cortex_m3_register_commands(struct command_context_s *cmd_ctx);
 189 extern int cortex_m3_init_arch_info(target_t *target, cortex_m3_common_t *cortex_m3, int chain_pos, char *variant);
 190
 191 #endif /* CORTEX_M3_H */