214 lines
7.7 KiB
C
214 lines
7.7 KiB
C
/***************************************************************************
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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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* Copyright (C) 2008 by David T.L. Wong *
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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 MIPS_EJTAG
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#define MIPS_EJTAG
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#include <jtag/jtag.h>
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/* tap instructions */
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#define EJTAG_INST_IDCODE 0x01
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#define EJTAG_INST_IMPCODE 0x03
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#define EJTAG_INST_ADDRESS 0x08
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#define EJTAG_INST_DATA 0x09
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#define EJTAG_INST_CONTROL 0x0A
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#define EJTAG_INST_ALL 0x0B
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#define EJTAG_INST_EJTAGBOOT 0x0C
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#define EJTAG_INST_NORMALBOOT 0x0D
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#define EJTAG_INST_FASTDATA 0x0E
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#define EJTAG_INST_TCBCONTROLA 0x10
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#define EJTAG_INST_TCBCONTROLB 0x11
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#define EJTAG_INST_TCBDATA 0x12
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#define EJTAG_INST_BYPASS 0xFF
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/* microchip PIC32MX specific instructions */
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#define MTAP_SW_MTAP 0x04
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#define MTAP_SW_ETAP 0x05
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#define MTAP_COMMAND 0x07
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/* microchip specific cmds */
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#define MCHP_ASERT_RST 0xd1
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#define MCHP_DE_ASSERT_RST 0xd0
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#define MCHP_ERASE 0xfc
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#define MCHP_STATUS 0x00
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/* ejtag control register bits ECR */
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#define EJTAG_CTRL_TOF (1 << 1)
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#define EJTAG_CTRL_TIF (1 << 2)
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#define EJTAG_CTRL_BRKST (1 << 3)
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#define EJTAG_CTRL_DLOCK (1 << 5)
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#define EJTAG_CTRL_DRWN (1 << 9)
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#define EJTAG_CTRL_DERR (1 << 10)
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#define EJTAG_CTRL_DSTRT (1 << 11)
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#define EJTAG_CTRL_JTAGBRK (1 << 12)
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#define EJTAG_CTRL_SETDEV (1 << 14)
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#define EJTAG_CTRL_PROBEN (1 << 15)
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#define EJTAG_CTRL_PRRST (1 << 16)
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#define EJTAG_CTRL_DMAACC (1 << 17)
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#define EJTAG_CTRL_PRACC (1 << 18)
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#define EJTAG_CTRL_PRNW (1 << 19)
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#define EJTAG_CTRL_PERRST (1 << 20)
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#define EJTAG_CTRL_SYNC (1 << 23)
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#define EJTAG_CTRL_DNM (1 << 28)
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#define EJTAG_CTRL_ROCC (1 << 31)
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/* Debug Register (CP0 Register 23, Select 0) */
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#define EJTAG_DEBUG_DSS (1 << 0)
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#define EJTAG_DEBUG_DBP (1 << 1)
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#define EJTAG_DEBUG_DDBL (1 << 2)
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#define EJTAG_DEBUG_DDBS (1 << 3)
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#define EJTAG_DEBUG_DIB (1 << 4)
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#define EJTAG_DEBUG_DINT (1 << 5)
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#define EJTAG_DEBUG_OFFLINE (1 << 7)
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#define EJTAG_DEBUG_SST (1 << 8)
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#define EJTAG_DEBUG_NOSST (1 << 9)
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#define EJTAG_DEBUG_DDBLIMPR (1 << 18)
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#define EJTAG_DEBUG_DDBSIMPR (1 << 19)
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#define EJTAG_DEBUG_IEXI (1 << 20)
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#define EJTAG_DEBUG_DBUSEP (1 << 21)
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#define EJTAG_DEBUG_CACHEEP (1 << 22)
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#define EJTAG_DEBUG_MCHECKP (1 << 23)
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#define EJTAG_DEBUG_IBUSEP (1 << 24)
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#define EJTAG_DEBUG_COUNTDM (1 << 25)
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#define EJTAG_DEBUG_HALT (1 << 26)
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#define EJTAG_DEBUG_DOZE (1 << 27)
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#define EJTAG_DEBUG_LSNM (1 << 28)
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#define EJTAG_DEBUG_NODCR (1 << 29)
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#define EJTAG_DEBUG_DM (1 << 30)
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#define EJTAG_DEBUG_DBD (1 << 31)
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/* implementaion register bits */
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#define EJTAG_IMP_R3K (1 << 28)
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#define EJTAG_IMP_DINT (1 << 24)
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#define EJTAG_IMP_NODMA (1 << 14)
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#define EJTAG_IMP_MIPS16 (1 << 16)
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#define EJTAG_DCR_MIPS64 (1 << 0)
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/* Debug Control Register DCR */
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#define EJTAG_DCR 0xFF300000
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#define EJTAG_DCR_ENM (1 << 29)
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#define EJTAG_DCR_DB (1 << 17)
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#define EJTAG_DCR_IB (1 << 16)
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#define EJTAG_DCR_INTE (1 << 4)
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#define EJTAG_DCR_MP (1 << 2)
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/* breakpoint support */
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/* EJTAG_V20_* was tested on Broadcom BCM7401
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* and may or will differ with other hardware. For example EZ4021-FC. */
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#define EJTAG_V20_IBS 0xFF300004
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#define EJTAG_V20_IBA0 0xFF300100
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#define EJTAG_V20_IBC_OFFS 0x4 /* IBC Offset */
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#define EJTAG_V20_IBM_OFFS 0x8
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#define EJTAG_V20_IBAn_STEP 0x10 /* Offset for next channel */
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#define EJTAG_V20_DBS 0xFF30008
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#define EJTAG_V20_DBA0 0xFF300200
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#define EJTAG_V20_DBC_OFFS 0x4
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#define EJTAG_V20_DBM_OFFS 0x8
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#define EJTAG_V20_DBV_OFFS 0xc
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#define EJTAG_V20_DBAn_STEP 0x10
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#define EJTAG_V25_IBS 0xFF301000
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#define EJTAG_V25_IBA0 0xFF301100
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#define EJTAG_V25_IBM_OFFS 0x8
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#define EJTAG_V25_IBASID_OFFS 0x10
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#define EJTAG_V25_IBC_OFFS 0x18
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#define EJTAG_V25_IBAn_STEP 0x100
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#define EJTAG_V25_DBS 0xFF302000
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#define EJTAG_V25_DBA0 0xFF302100
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#define EJTAG_V25_DBM_OFFS 0x8
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#define EJTAG_V25_DBASID_OFFS 0x10
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#define EJTAG_V25_DBC_OFFS 0x18
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#define EJTAG_V25_DBV_OFFS 0x20
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#define EJTAG_V25_DBAn_STEP 0x100
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#define EJTAG_DBCn_NOSB (1 << 13)
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#define EJTAG_DBCn_NOLB (1 << 12)
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#define EJTAG_DBCn_BLM_MASK 0xff
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#define EJTAG_DBCn_BLM_SHIFT 4
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#define EJTAG_DBCn_BE (1 << 0)
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#define EJTAG_VERSION_20 0
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#define EJTAG_VERSION_25 1
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#define EJTAG_VERSION_26 2
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#define EJTAG_VERSION_31 3
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#define EJTAG_VERSION_41 4
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#define EJTAG_VERSION_51 5
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struct mips_ejtag {
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struct jtag_tap *tap;
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uint32_t impcode;
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uint32_t idcode;
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uint32_t ejtag_ctrl;
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int fast_access_save;
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uint32_t reg8;
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uint32_t reg9;
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unsigned scan_delay;
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int mode;
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uint32_t pa_ctrl;
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uint32_t pa_addr;
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unsigned int ejtag_version;
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/* Memory-Mapped Registers. This addresses are not same on different
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* EJTAG versions. */
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uint32_t ejtag_ibs_addr; /* Instruction Address Break Status */
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uint32_t ejtag_iba0_addr; /* IAB channel 0 */
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uint32_t ejtag_ibc_offs; /* IAB Control offset */
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uint32_t ejtag_ibm_offs; /* IAB Mask offset */
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uint32_t ejtag_ibasid_offs; /* IAB ASID (4Kc) */
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uint32_t ejtag_dbs_addr; /* Data Address Break Status Register */
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uint32_t ejtag_dba0_addr; /* DAB channel 0 */
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uint32_t ejtag_dbc_offs; /* DAB Control offset */
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uint32_t ejtag_dbm_offs; /* DAB Mask offset */
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uint32_t ejtag_dbv_offs; /* DAB Value offset */
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uint32_t ejtag_dbasid_offs; /* DAB ASID (4Kc) */
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uint32_t ejtag_iba_step_size;
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uint32_t ejtag_dba_step_size; /* siez of step till next
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* *DBAn register. */
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};
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void mips_ejtag_set_instr(struct mips_ejtag *ejtag_info,
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int new_instr);
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int mips_ejtag_enter_debug(struct mips_ejtag *ejtag_info);
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int mips_ejtag_exit_debug(struct mips_ejtag *ejtag_info);
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int mips_ejtag_get_idcode(struct mips_ejtag *ejtag_info, uint32_t *idcode);
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void mips_ejtag_add_scan_96(struct mips_ejtag *ejtag_info,
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uint32_t ctrl, uint32_t data, uint8_t *in_scan_buf);
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void mips_ejtag_drscan_32_out(struct mips_ejtag *ejtag_info, uint32_t data);
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int mips_ejtag_drscan_32(struct mips_ejtag *ejtag_info, uint32_t *data);
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void mips_ejtag_drscan_8_out(struct mips_ejtag *ejtag_info, uint8_t data);
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int mips_ejtag_drscan_8(struct mips_ejtag *ejtag_info, uint32_t *data);
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int mips_ejtag_fastdata_scan(struct mips_ejtag *ejtag_info, int write_t, uint32_t *data);
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int mips_ejtag_init(struct mips_ejtag *ejtag_info);
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int mips_ejtag_config_step(struct mips_ejtag *ejtag_info, int enable_step);
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static inline void mips_le_to_h_u32(jtag_callback_data_t arg)
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{
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uint8_t *in = (uint8_t *)arg;
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*((uint32_t *)arg) = le_to_h_u32(in);
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}
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#endif /* MIPS_EJTAG */
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