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/***************************************************************************
* Copyright (C) 2005 by Dominic Rath *
* Dominic.Rath@gmx.de *
* *
* Copyright (C) 2006 by Magnus Lundin *
* lundin@mlu.mine.nu *
* *
* Copyright (C) 2008 by Spencer Oliver *
* spen@spen-soft.co.uk *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#ifndef CORTEX_M3_H
#define CORTEX_M3_H
#include "register.h"
#include "target.h"
#include "armv7m.h"
#define CORTEX_M3_COMMON_MAGIC 0x1A451A45
#define SYSTEM_CONTROL_BASE 0x400FE000
#define CPUID 0xE000ED00
/* Debug Control Block */
#define DCB_DHCSR 0xE000EDF0
#define DCB_DCRSR 0xE000EDF4
#define DCB_DCRDR 0xE000EDF8
#define DCB_DEMCR 0xE000EDFC
#define DCRSR_WnR (1 << 16)
#define DWT_CTRL 0xE0001000
#define DWT_CYCCNT 0xE0001004
#define DWT_COMP0 0xE0001020
#define DWT_MASK0 0xE0001024
#define DWT_FUNCTION0 0xE0001028
#define FP_CTRL 0xE0002000
#define FP_REMAP 0xE0002004
#define FP_COMP0 0xE0002008
#define FP_COMP1 0xE000200C
#define FP_COMP2 0xE0002010
#define FP_COMP3 0xE0002014
#define FP_COMP4 0xE0002018
#define FP_COMP5 0xE000201C
#define FP_COMP6 0xE0002020
#define FP_COMP7 0xE0002024
/* DCB_DHCSR bit and field definitions */
#define DBGKEY (0xA05F << 16)
#define C_DEBUGEN (1 << 0)
#define C_HALT (1 << 1)
#define C_STEP (1 << 2)
#define C_MASKINTS (1 << 3)
#define S_REGRDY (1 << 16)
#define S_HALT (1 << 17)
#define S_SLEEP (1 << 18)
#define S_LOCKUP (1 << 19)
#define S_RETIRE_ST (1 << 24)
#define S_RESET_ST (1 << 25)
/* DCB_DEMCR bit and field definitions */
#define TRCENA (1 << 24)
#define VC_HARDERR (1 << 10)
#define VC_INTERR (1 << 9)
#define VC_BUSERR (1 << 8)
#define VC_STATERR (1 << 7)
#define VC_CHKERR (1 << 6)
#define VC_NOCPERR (1 << 5)
#define VC_MMERR (1 << 4)
#define VC_CORERESET (1 << 0)
#define NVIC_ICTR 0xE000E004
#define NVIC_ISE0 0xE000E100
#define NVIC_ICSR 0xE000ED04
#define NVIC_AIRCR 0xE000ED0C
#define NVIC_SHCSR 0xE000ED24
#define NVIC_CFSR 0xE000ED28
#define NVIC_MMFSRb 0xE000ED28
#define NVIC_BFSRb 0xE000ED29
#define NVIC_USFSRh 0xE000ED2A
#define NVIC_HFSR 0xE000ED2C
#define NVIC_DFSR 0xE000ED30
#define NVIC_MMFAR 0xE000ED34
#define NVIC_BFAR 0xE000ED38
/* NVIC_AIRCR bits */
#define AIRCR_VECTKEY (0x5FA << 16)
#define AIRCR_SYSRESETREQ (1 << 2)
#define AIRCR_VECTCLRACTIVE (1 << 1)
#define AIRCR_VECTRESET (1 << 0)
/* NVIC_SHCSR bits */
#define SHCSR_BUSFAULTENA (1 << 17)
/* NVIC_DFSR bits */
#define DFSR_HALTED 1
#define DFSR_BKPT 2
#define DFSR_DWTTRAP 4
#define DFSR_VCATCH 8
#define FPCR_CODE 0
#define FPCR_LITERAL 1
#define FPCR_REPLACE_REMAP (0 << 30)
#define FPCR_REPLACE_BKPT_LOW (1 << 30)
#define FPCR_REPLACE_BKPT_HIGH (2 << 30)
#define FPCR_REPLACE_BKPT_BOTH (3 << 30)
typedef struct cortex_m3_fp_comparator_s
{
int used;
int type;
uint32_t fpcr_value;
uint32_t fpcr_address;
} cortex_m3_fp_comparator_t;
typedef struct cortex_m3_dwt_comparator_s
{
int used;
uint32_t comp;
uint32_t mask;
uint32_t function;
uint32_t dwt_comparator_address;
} cortex_m3_dwt_comparator_t;
typedef struct cortex_m3_common_s
{
int common_magic;
struct arm_jtag jtag_info;
/* Context information */
uint32_t dcb_dhcsr;
uint32_t nvic_dfsr; /* Debug Fault Status Register - shows reason for debug halt */
uint32_t nvic_icsr; /* Interrupt Control State Register - shows active and pending IRQ */
/* Flash Patch and Breakpoint (FPB) */
int fp_num_lit;
int fp_num_code;
int fp_code_available;
int fpb_enabled;
int auto_bp_type;
cortex_m3_fp_comparator_t *fp_comparator_list;
/* Data Watchpoint and Trace (DWT) */
int dwt_num_comp;
int dwt_comp_available;
cortex_m3_dwt_comparator_t *dwt_comparator_list;
struct reg_cache_s *dwt_cache;
armv7m_common_t armv7m;
} cortex_m3_common_t;
static inline struct cortex_m3_common_s *
target_to_cm3(struct target_s *target)
{
return container_of(target->arch_info,
struct cortex_m3_common_s, armv7m);
}
#endif /* CORTEX_M3_H */
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