/*************************************************************************** * Copyright (C) 2008 by Spencer Oliver * * spen@spen-soft.co.uk * * * * Copyright (C) 2008 by David T.L. Wong * * * * 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 MIPS_EJTAG #define MIPS_EJTAG #include "types.h" #include "jtag.h" /* tap instructions */ #define EJTAG_INST_IDCODE 0x01 #define EJTAG_INST_IMPCODE 0x03 #define EJTAG_INST_ADDRESS 0x08 #define EJTAG_INST_DATA 0x09 #define EJTAG_INST_CONTROL 0x0A #define EJTAG_INST_ALL 0x0B #define EJTAG_INST_EJTAGBOOT 0x0C #define EJTAG_INST_NORMALBOOT 0x0D #define EJTAG_INST_FASTDATA 0x0E #define EJTAG_INST_TCBCONTROLA 0x10 #define EJTAG_INST_TCBCONTROLB 0x11 #define EJTAG_INST_TCBDATA 0x12 #define EJTAG_INST_BYPASS 0xFF /* debug control register bits */ #define EJTAG_CTRL_TOF (1 << 1) #define EJTAG_CTRL_TIF (1 << 2) #define EJTAG_CTRL_BRKST (1 << 3) #define EJTAG_CTRL_DLOCK (1 << 5) #define EJTAG_CTRL_DRWN (1 << 9) #define EJTAG_CTRL_DERR (1 << 10) #define EJTAG_CTRL_DSTRT (1 << 11) #define EJTAG_CTRL_JTAGBRK (1 << 12) #define EJTAG_CTRL_SETDEV (1 << 14) #define EJTAG_CTRL_PROBEN (1 << 15) #define EJTAG_CTRL_PRRST (1 << 16) #define EJTAG_CTRL_DMAACC (1 << 17) #define EJTAG_CTRL_PRACC (1 << 18) #define EJTAG_CTRL_PRNW (1 << 19) #define EJTAG_CTRL_PERRST (1 << 20) #define EJTAG_CTRL_SYNC (1 << 23) #define EJTAG_CTRL_DNM (1 << 28) #define EJTAG_CTRL_ROCC (1 << 31) /* Debug Register (CP0 Register 23, Select 0) */ #define EJTAG_DEBUG_DSS (1 << 0) #define EJTAG_DEBUG_DBP (1 << 1) #define EJTAG_DEBUG_DDBL (1 << 2) #define EJTAG_DEBUG_DDBS (1 << 3) #define EJTAG_DEBUG_DIB (1 << 4) #define EJTAG_DEBUG_DINT (1 << 5) #define EJTAG_DEBUG_OFFLINE (1 << 7) #define EJTAG_DEBUG_SST (1 << 8) #define EJTAG_DEBUG_NOSST (1 << 9) #define EJTAG_DEBUG_DDBLIMPR (1 << 18) #define EJTAG_DEBUG_DDBSIMPR (1 << 19) #define EJTAG_DEBUG_IEXI (1 << 20) #define EJTAG_DEBUG_DBUSEP (1 << 21) #define EJTAG_DEBUG_CACHEEP (1 << 22) #define EJTAG_DEBUG_MCHECKP (1 << 23) #define EJTAG_DEBUG_IBUSEP (1 << 24) #define EJTAG_DEBUG_COUNTDM (1 << 25) #define EJTAG_DEBUG_HALT (1 << 26) #define EJTAG_DEBUG_DOZE (1 << 27) #define EJTAG_DEBUG_LSNM (1 << 28) #define EJTAG_DEBUG_NODCR (1 << 29) #define EJTAG_DEBUG_DM (1 << 30) #define EJTAG_DEBUG_DBD (1 << 31) /* implementaion register bits */ #define EJTAG_IMP_NODMA (1 << 14) #define EJTAG_IMP_MIPS16 (1 << 16) typedef struct mips_ejtag_s { int chain_pos; u32 impcode; /*int use_dma;*/ u32 ejtag_ctrl; } mips_ejtag_t; extern int mips_ejtag_set_instr(mips_ejtag_t *ejtag_info, int new_instr, in_handler_t handler); extern int mips_ejtag_enter_debug(mips_ejtag_t *ejtag_info); extern int mips_ejtag_exit_debug(mips_ejtag_t *ejtag_info, int enable_interrupts); extern int mips_ejtag_get_impcode(mips_ejtag_t *ejtag_info, u32 *impcode, in_handler_t handler); extern int mips_ejtag_get_idcode(mips_ejtag_t *ejtag_info, u32 *idcode, in_handler_t handler); extern int mips_ejtag_drscan_32(mips_ejtag_t *ejtag_info, u32 *data); extern int mips_ejtag_init(mips_ejtag_t *ejtag_info); extern int mips_ejtag_config_step(mips_ejtag_t *ejtag_info, int enable_step); extern int mips_ejtag_read_debug(mips_ejtag_t *ejtag_info, u32* debug_reg); #endif /* MIPS_EJTAG */