From c3d51bf0da7333de303adf86011913a4bca96e4d Mon Sep 17 00:00:00 2001 From: Oleksandr Tymoshenko Date: Sun, 15 Aug 2010 21:51:34 +0200 Subject: avr32: work-in-progress committed so as to ease cooperation and to let it be improved over time. So far it supports: - halt/resume - registers inspection - memory inspection/modification I'm still getting up to speed with OpenOCD internals and AVR32 so code is a little bit messy and I'd appreciate any feedback. --- src/target/avr32_jtag.h | 107 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 107 insertions(+) create mode 100644 src/target/avr32_jtag.h (limited to 'src/target/avr32_jtag.h') diff --git a/src/target/avr32_jtag.h b/src/target/avr32_jtag.h new file mode 100644 index 00000000..00f8330e --- /dev/null +++ b/src/target/avr32_jtag.h @@ -0,0 +1,107 @@ +/*************************************************************************** + * Copyright (C) 2010 by Oleksandr Tymoshenko * + * * + * 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 AVR32_JTAG +#define AVR32_JTAG + +#define AVR32NUMCOREREGS 17 + +/* tap instructions */ +#define AVR32_INST_IDCODE 0x01 +#define AVR32_INST_NEXUS_ACCESS 0x10 +#define AVR32_INST_MW_ACCESS 0x11 +#define AVR32_INST_MB_ACCESS 0x12 + +#define SLAVE_OCD 0x01 +#define SLAVE_HSB_CACHED 0x04 +#define SLAVE_HSB_UNCACHED 0x05 + +/* + * Registers + */ + +#define AVR32_OCDREG_DID 0x00 +#define AVR32_OCDREG_DC 0x02 +#define OCDREG_DC_SS (1 << 8) +#define OCDREG_DC_DBR (1 << 12) +#define OCDREG_DC_DBE (1 << 13) +#define OCDREG_DC_SQA (1 << 22) +#define OCDREG_DC_RES (1 << 30) +#define OCDREG_DC_ABORT (1 << 31) +#define AVR32_OCDREG_DS 0x04 +#define OCDREG_DS_SSS (1 << 0) +#define OCDREG_DS_SWB (1 << 1) +#define OCDREG_DS_HWB (1 << 2) +#define OCDREG_DS_STP (1 << 4) +#define OCDREG_DS_DBS (1 << 5) +#define OCDREG_DS_BP_SHIFT 8 +#define OCDREG_DS_BP_MASK 0xff +#define OCDREG_DS_INC (1 << 24) +#define OCDREG_DS_BOZ (1 << 25) +#define OCDREG_DS_DBA (1 << 26) +#define OCDREG_DS_EXB (1 << 27) +#define OCDREG_DS_NTBF (1 << 28) + +#define AVR32_OCDREG_DINST 0x41 +#define AVR32_OCDREG_DPC 0x42 +#define AVR32_OCDREG_DCCPU 0x44 +#define AVR32_OCDREG_DCEMU 0x45 +#define AVR32_OCDREG_DCSR 0x46 +#define OCDREG_DCSR_CPUD (1 << 0) +#define OCDREG_DCSR_EMUD (1 << 1) + +/* + * Direction bit + */ +#define MODE_WRITE 0x00 +#define MODE_READ 0x01 + +/* + * Some instructions + */ + +#define RETD 0xd703d623 +#define MTDR(dreg, reg) (0xe7b00044 | ((reg) << 16) | dreg) +#define MFDR(reg, dreg) (0xe5b00044 | ((reg) << 16) | dreg) +#define MTSR(sysreg, reg) (0xe3b00002 | ((reg) << 16) | sysreg) +#define MFSR(reg, sysreg) (0xe1b00002 | ((reg) << 16) | sysreg) + +struct avr32_jtag +{ + struct jtag_tap *tap; + uint32_t dpc; /* Debug PC value */ +}; + +int avr32_jtag_nexus_read(struct avr32_jtag *jtag_info, + uint32_t addr, uint32_t *value); +int avr32_jtag_nexus_write(struct avr32_jtag *jtag_info, + uint32_t addr, uint32_t value); + +int avr32_jtag_mwa_read(struct avr32_jtag *jtag_info, int slave, + uint32_t addr, uint32_t *value); +int avr32_jtag_mwa_write(struct avr32_jtag *jtag_info, int slave, + uint32_t addr, uint32_t value); + + +int avr32_ocd_setbits(struct avr32_jtag *jtag, int reg, uint32_t bits); +int avr32_ocd_clearbits(struct avr32_jtag *jtag, int reg, uint32_t bits); + +int avr32_jtag_exec(struct avr32_jtag *jtag_info, uint32_t inst); + +#endif /* AVR32_JTAG */ + -- cgit v1.2.3