c5eb990825
This patch adds support for instruction tracing to eSi-RISC targets. The command interface is borrowed heavily from ETM; eSi-Trace uses a less sophisticated model for tracing, however the setup and usage is similar. This patch also cleans up the command interfaces of the other esirisc command groups and adds additional debugging information to log messages when dealing with CSRs. This patch "finalizes" support for 32-bit eSi-RISC targets. Change-Id: Ia2a9de79a3c7c066240b5212721fb1b7584a9a45 Signed-off-by: Steven Stallion <stallion@squareup.com> Reviewed-on: http://openocd.zylin.com/4780 Tested-by: jenkins Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
106 lines
4.0 KiB
C
106 lines
4.0 KiB
C
/***************************************************************************
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* Copyright (C) 2018 by Square, Inc. *
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* Steven Stallion <stallion@squareup.com> *
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* James Zhao <hjz@squareup.com> *
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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, see <http://www.gnu.org/licenses/>. *
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***************************************************************************/
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#ifndef OPENOCD_TARGET_ESIRISC_JTAG_H
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#define OPENOCD_TARGET_ESIRISC_JTAG_H
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#include <helper/types.h>
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#include <jtag/jtag.h>
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/* TAP Instructions */
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#define INSTR_IDCODE 0x8
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#define INSTR_DEBUG 0x9
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#define INSTR_BYPASS 0xf
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#define INSTR_LENGTH 4
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/* eSi-Debug Commands */
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#define DEBUG_NOP 0x00
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#define DEBUG_READ_BYTE 0x10
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#define DEBUG_READ_HWORD 0x20
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#define DEBUG_READ_WORD 0x30
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#define DEBUG_WRITE_BYTE 0x60
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#define DEBUG_WRITE_HWORD 0x70
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#define DEBUG_WRITE_WORD 0x80
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#define DEBUG_READ_REG 0xb0
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#define DEBUG_WRITE_REG 0xc0
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#define DEBUG_READ_CSR 0xd0
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#define DEBUG_WRITE_CSR 0xe0
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#define DEBUG_ENABLE_DEBUG 0xf0
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#define DEBUG_DISABLE_DEBUG 0xf2
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#define DEBUG_ASSERT_RESET 0xf4
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#define DEBUG_DEASSERT_RESET 0xf6
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#define DEBUG_BREAK 0xf8
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#define DEBUG_CONTINUE 0xfa
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#define DEBUG_FLUSH_CACHES 0xfc
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/* Exception IDs */
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#define EID_OVERFLOW 0x3d
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#define EID_CANT_DEBUG 0x3e
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#define EID_NONE 0x3f
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/* Byte Stuffing */
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#define STUFF_MARKER 0x55
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#define PAD_BYTE 0xaa
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struct esirisc_jtag {
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struct jtag_tap *tap;
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uint8_t status;
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};
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bool esirisc_jtag_is_debug_active(struct esirisc_jtag *jtag_info);
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bool esirisc_jtag_is_stopped(struct esirisc_jtag *jtag_info);
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uint8_t esirisc_jtag_get_eid(struct esirisc_jtag *jtag_info);
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int esirisc_jtag_read_byte(struct esirisc_jtag *jtag_info,
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uint32_t address, uint8_t *data);
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int esirisc_jtag_read_hword(struct esirisc_jtag *jtag_info,
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uint32_t address, uint16_t *data);
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int esirisc_jtag_read_word(struct esirisc_jtag *jtag_info,
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uint32_t address, uint32_t *data);
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int esirisc_jtag_write_byte(struct esirisc_jtag *jtag_info,
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uint32_t address, uint8_t data);
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int esirisc_jtag_write_hword(struct esirisc_jtag *jtag_info,
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uint32_t address, uint16_t data);
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int esirisc_jtag_write_word(struct esirisc_jtag *jtag_info,
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uint32_t address, uint32_t data);
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int esirisc_jtag_read_reg(struct esirisc_jtag *jtag_info,
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uint8_t reg, uint32_t *data);
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int esirisc_jtag_write_reg(struct esirisc_jtag *jtag_info,
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uint8_t reg, uint32_t data);
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int esirisc_jtag_read_csr(struct esirisc_jtag *jtag_info,
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uint8_t bank, uint8_t csr, uint32_t *data);
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int esirisc_jtag_write_csr(struct esirisc_jtag *jtag_info,
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uint8_t bank, uint8_t csr, uint32_t data);
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int esirisc_jtag_enable_debug(struct esirisc_jtag *jtag_info);
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int esirisc_jtag_disable_debug(struct esirisc_jtag *jtag_info);
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int esirisc_jtag_assert_reset(struct esirisc_jtag *jtag_info);
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int esirisc_jtag_deassert_reset(struct esirisc_jtag *jtag_info);
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int esirisc_jtag_break(struct esirisc_jtag *jtag_info);
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int esirisc_jtag_continue(struct esirisc_jtag *jtag_info);
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int esirisc_jtag_flush_caches(struct esirisc_jtag *jtag_info);
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#endif /* OPENOCD_TARGET_ESIRISC_JTAG_H */
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