215 lines
6.9 KiB
C
215 lines
6.9 KiB
C
/***************************************************************************
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* Copyright (C) 2005 by Dominic Rath *
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* Dominic.Rath@gmx.de *
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* *
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* Copyright (C) 2006 by Magnus Lundin *
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* lundin@mlu.mine.nu *
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* *
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* Copyright (C) 2008 by Spencer Oliver *
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* spen@spen-soft.co.uk *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
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***************************************************************************/
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#ifndef CORTEX_M_H
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#define CORTEX_M_H
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#include "armv7m.h"
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#define CORTEX_M_COMMON_MAGIC 0x1A451A45
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#define SYSTEM_CONTROL_BASE 0x400FE000
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#define ITM_TER 0xE0000E00
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#define ITM_TPR 0xE0000E40
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#define ITM_TCR 0xE0000E80
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#define ITM_LAR 0xE0000FB0
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#define CPUID 0xE000ED00
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/* Debug Control Block */
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#define DCB_DHCSR 0xE000EDF0
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#define DCB_DCRSR 0xE000EDF4
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#define DCB_DCRDR 0xE000EDF8
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#define DCB_DEMCR 0xE000EDFC
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#define DCRSR_WnR (1 << 16)
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#define DWT_CTRL 0xE0001000
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#define DWT_CYCCNT 0xE0001004
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#define DWT_COMP0 0xE0001020
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#define DWT_MASK0 0xE0001024
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#define DWT_FUNCTION0 0xE0001028
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#define FP_CTRL 0xE0002000
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#define FP_REMAP 0xE0002004
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#define FP_COMP0 0xE0002008
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#define FP_COMP1 0xE000200C
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#define FP_COMP2 0xE0002010
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#define FP_COMP3 0xE0002014
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#define FP_COMP4 0xE0002018
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#define FP_COMP5 0xE000201C
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#define FP_COMP6 0xE0002020
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#define FP_COMP7 0xE0002024
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#define FPU_CPACR 0xE000ED88
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#define FPU_FPCCR 0xE000EF34
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#define FPU_FPCAR 0xE000EF38
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#define FPU_FPDSCR 0xE000EF3C
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#define TPI_SSPSR 0xE0040000
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#define TPI_CSPSR 0xE0040004
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#define TPI_ACPR 0xE0040010
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#define TPI_SPPR 0xE00400F0
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#define TPI_FFSR 0xE0040300
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#define TPI_FFCR 0xE0040304
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#define TPI_FSCR 0xE0040308
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/* DCB_DHCSR bit and field definitions */
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#define DBGKEY (0xA05F << 16)
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#define C_DEBUGEN (1 << 0)
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#define C_HALT (1 << 1)
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#define C_STEP (1 << 2)
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#define C_MASKINTS (1 << 3)
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#define S_REGRDY (1 << 16)
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#define S_HALT (1 << 17)
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#define S_SLEEP (1 << 18)
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#define S_LOCKUP (1 << 19)
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#define S_RETIRE_ST (1 << 24)
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#define S_RESET_ST (1 << 25)
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/* DCB_DEMCR bit and field definitions */
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#define TRCENA (1 << 24)
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#define VC_HARDERR (1 << 10)
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#define VC_INTERR (1 << 9)
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#define VC_BUSERR (1 << 8)
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#define VC_STATERR (1 << 7)
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#define VC_CHKERR (1 << 6)
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#define VC_NOCPERR (1 << 5)
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#define VC_MMERR (1 << 4)
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#define VC_CORERESET (1 << 0)
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#define NVIC_ICTR 0xE000E004
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#define NVIC_ISE0 0xE000E100
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#define NVIC_ICSR 0xE000ED04
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#define NVIC_AIRCR 0xE000ED0C
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#define NVIC_SHCSR 0xE000ED24
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#define NVIC_CFSR 0xE000ED28
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#define NVIC_MMFSRb 0xE000ED28
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#define NVIC_BFSRb 0xE000ED29
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#define NVIC_USFSRh 0xE000ED2A
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#define NVIC_HFSR 0xE000ED2C
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#define NVIC_DFSR 0xE000ED30
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#define NVIC_MMFAR 0xE000ED34
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#define NVIC_BFAR 0xE000ED38
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/* NVIC_AIRCR bits */
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#define AIRCR_VECTKEY (0x5FA << 16)
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#define AIRCR_SYSRESETREQ (1 << 2)
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#define AIRCR_VECTCLRACTIVE (1 << 1)
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#define AIRCR_VECTRESET (1 << 0)
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/* NVIC_SHCSR bits */
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#define SHCSR_BUSFAULTENA (1 << 17)
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/* NVIC_DFSR bits */
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#define DFSR_HALTED 1
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#define DFSR_BKPT 2
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#define DFSR_DWTTRAP 4
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#define DFSR_VCATCH 8
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#define FPCR_CODE 0
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#define FPCR_LITERAL 1
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#define FPCR_REPLACE_REMAP (0 << 30)
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#define FPCR_REPLACE_BKPT_LOW (1 << 30)
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#define FPCR_REPLACE_BKPT_HIGH (2 << 30)
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#define FPCR_REPLACE_BKPT_BOTH (3 << 30)
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struct cortex_m_fp_comparator {
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int used;
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int type;
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uint32_t fpcr_value;
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uint32_t fpcr_address;
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};
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struct cortex_m_dwt_comparator {
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int used;
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uint32_t comp;
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uint32_t mask;
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uint32_t function;
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uint32_t dwt_comparator_address;
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};
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enum cortex_m_soft_reset_config {
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CORTEX_M_RESET_SYSRESETREQ,
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CORTEX_M_RESET_VECTRESET,
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};
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enum cortex_m_isrmasking_mode {
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CORTEX_M_ISRMASK_AUTO,
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CORTEX_M_ISRMASK_OFF,
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CORTEX_M_ISRMASK_ON,
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};
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struct cortex_m_common {
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int common_magic;
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struct arm_jtag jtag_info;
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/* Context information */
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uint32_t dcb_dhcsr;
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uint32_t nvic_dfsr; /* Debug Fault Status Register - shows reason for debug halt */
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uint32_t nvic_icsr; /* Interrupt Control State Register - shows active and pending IRQ */
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/* Flash Patch and Breakpoint (FPB) */
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int fp_num_lit;
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int fp_num_code;
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int fp_code_available;
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int fpb_enabled;
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int auto_bp_type;
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struct cortex_m_fp_comparator *fp_comparator_list;
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/* Data Watchpoint and Trace (DWT) */
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int dwt_num_comp;
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int dwt_comp_available;
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struct cortex_m_dwt_comparator *dwt_comparator_list;
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struct reg_cache *dwt_cache;
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enum cortex_m_soft_reset_config soft_reset_config;
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enum cortex_m_isrmasking_mode isrmasking_mode;
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struct armv7m_common armv7m;
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};
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static inline struct cortex_m_common *
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target_to_cm(struct target *target)
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{
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return container_of(target->arch_info,
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struct cortex_m_common, armv7m);
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}
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int cortex_m_examine(struct target *target);
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int cortex_m_set_breakpoint(struct target *target, struct breakpoint *breakpoint);
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int cortex_m_unset_breakpoint(struct target *target, struct breakpoint *breakpoint);
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int cortex_m_add_breakpoint(struct target *target, struct breakpoint *breakpoint);
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int cortex_m_remove_breakpoint(struct target *target, struct breakpoint *breakpoint);
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int cortex_m_set_watchpoint(struct target *target, struct watchpoint *watchpoint);
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int cortex_m_unset_watchpoint(struct target *target, struct watchpoint *watchpoint);
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int cortex_m_add_watchpoint(struct target *target, struct watchpoint *watchpoint);
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int cortex_m_remove_watchpoint(struct target *target, struct watchpoint *watchpoint);
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void cortex_m_enable_breakpoints(struct target *target);
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void cortex_m_enable_watchpoints(struct target *target);
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void cortex_m_dwt_setup(struct cortex_m_common *cm, struct target *target);
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#endif /* CORTEX_M_H */
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