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Diffstat (limited to 'src/target/arc_jtag.h')
| -rw-r--r-- | src/target/arc_jtag.h | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/src/target/arc_jtag.h b/src/target/arc_jtag.h new file mode 100644 index 00000000..99795f56 --- /dev/null +++ b/src/target/arc_jtag.h @@ -0,0 +1,70 @@ +/*************************************************************************** + * Copyright (C) 2013-2014,2019-2020 Synopsys, Inc. * + * Frank Dols <frank.dols@synopsys.com> * + * Mischa Jonker <mischa.jonker@synopsys.com> * + * Anton Kolesov <anton.kolesov@synopsys.com> * + * Evgeniy Didin <didin@synopsys.com> * + * * + * SPDX-License-Identifier: GPL-2.0-or-later * + ***************************************************************************/ + +#ifndef OPENOCD_TARGET_ARC_JTAG_H +#define OPENOCD_TARGET_ARC_JTAG_H + +#define ARC_TRANSACTION_CMD_REG 0x9 /* Command to perform */ +#define ARC_TRANSACTION_CMD_REG_LENGTH 4 + +/* Jtag status register, value is placed in IR to read jtag status register */ +#define ARC_JTAG_STATUS_REG 0x8 +#define ARC_JTAG_ADDRESS_REG 0xA /* SoC address to access */ +#define ARC_JTAG_DATA_REG 0xB /* Data read/written from SoC */ + +/* Jtag status register field */ +#define ARC_JTAG_STAT_RU 0x10 + +/* ARC Jtag transactions */ +#define ARC_JTAG_WRITE_TO_MEMORY 0x0 +#define ARC_JTAG_WRITE_TO_CORE_REG 0x1 +#define ARC_JTAG_WRITE_TO_AUX_REG 0x2 +#define ARC_JTAG_CMD_NOP 0x3 +#define ARC_JTAG_READ_FROM_MEMORY 0x4 +#define ARC_JTAG_READ_FROM_CORE_REG 0x5 +#define ARC_JTAG_READ_FROM_AUX_REG 0x6 + +#define ARC_JTAG_CORE_REG 0x0 +#define ARC_JTAG_AUX_REG 0x1 + + +struct arc_jtag { + struct jtag_tap *tap; + uint32_t cur_trans; +}; + +/* ----- Exported JTAG functions ------------------------------------------- */ + +int arc_jtag_startup(struct arc_jtag *jtag_info); +int arc_jtag_status(struct arc_jtag *const jtag_info, uint32_t *const value); + +int arc_jtag_write_core_reg(struct arc_jtag *jtag_info, uint32_t *addr, + uint32_t count, const uint32_t *buffer); +int arc_jtag_read_core_reg(struct arc_jtag *jtag_info, uint32_t *addr, + uint32_t count, uint32_t *buffer); +int arc_jtag_write_core_reg_one(struct arc_jtag *jtag_info, uint32_t addr, + const uint32_t buffer); +int arc_jtag_read_core_reg_one(struct arc_jtag *jtag_info, uint32_t addr, + uint32_t *buffer); + +int arc_jtag_write_aux_reg(struct arc_jtag *jtag_info, uint32_t *addr, + uint32_t count, const uint32_t *buffer); +int arc_jtag_write_aux_reg_one(struct arc_jtag *jtag_info, uint32_t addr, + uint32_t value); +int arc_jtag_read_aux_reg(struct arc_jtag *jtag_info, uint32_t *addr, + uint32_t count, uint32_t *buffer); +int arc_jtag_read_aux_reg_one(struct arc_jtag *jtag_info, uint32_t addr, + uint32_t *value); + +int arc_jtag_write_memory(struct arc_jtag *jtag_info, uint32_t addr, + uint32_t count, const uint32_t *buffer); +int arc_jtag_read_memory(struct arc_jtag *jtag_info, uint32_t addr, + uint32_t count, uint32_t *buffer, bool slow_memory); +#endif /* OPENOCD_TARGET_ARC_JTAG_H */ |