Subversion Repositories adv_debug_sys

#ifndef _ADV_DBG_COMMANDS_H_

#define _ADV_DBG_COMMANDS_H_

// Definitions for the top-level debug unit.  This really just consists

// of a single register, used to select the active debug module ("chain").

#define DBG_MODULE_SELECT_REG_SIZE 2

#define DBG_MAX_MODULES 4  // used to size an array

#define DC_WISHBONE 0

#define DC_CPU0     1

#define DC_CPU1     2

// Polynomial for the CRC calculation

// Yes, it's backwards.  Yes, this is on purpose.

// The hardware is designed this way to save on logic and routing,

// and it's really all the same to us here.

#define ADBG_CRC_POLY 0xedb88320

// These are for the internal registers in the Wishbone module

// The first is the length of the index register,

// the indexes of the various registers are defined after that

#define DBG_WB_REG_SEL_LEN 1

#define DBG_WB_REG_ERROR 0

// Opcode definitions for the Wishbone module

#define DBG_WB_OPCODE_LEN   4

#define DBG_WB_CMD_NOP      0x0

#define DBG_WB_CMD_BWRITE8  0x1

#define DBG_WB_CMD_BWRITE16 0x2

#define DBG_WB_CMD_BWRITE32 0x3

#define DBG_WB_CMD_BREAD8   0x5

#define DBG_WB_CMD_BREAD16  0x6

#define DBG_WB_CMD_BREAD32  0x7

#define DBG_WB_CMD_IREG_WR  0x9  // This is both a select and a write

#define DBG_WB_CMD_IREG_SEL 0xd  // There is no 'read', the current register is always read.  Use a NOP to read.

// Internal register definitions for the CPU0 module

#define DBG_CPU0_REG_SEL_LEN 1

#define DBG_CPU0_REG_STATUS 0

// Opcode definitions for the first CPU module

#define DBG_CPU0_OPCODE_LEN   4

#define DBG_CPU0_CMD_NOP      0x0

#define DBG_CPU0_CMD_BWRITE32 0x3

#define DBG_CPU0_CMD_BREAD32  0x7

#define DBG_CPU0_CMD_IREG_WR  0x9  // This is both a select and a write

#define DBG_CPU0_CMD_IREG_SEL 0xd  // There is no 'read', the current register is always read.  Use a NOP to read.

// Internal register definitions for the CPU1 module

#define DBG_CPU1_REG_SEL_LEN 1

#define DBG_CPU1_REG_STATUS 0

// Opcode definitions for the second CPU module

#define DBG_CPU1_OPCODE_LEN   4

#define DBG_CPU1_CMD_NOP      0x0

#define DBG_CPU1_CMD_BWRITE32 0x3

#define DBG_CPU1_CMD_BREAD32  0x7

#define DBG_CPU1_CMD_IREG_WR  0x9  // This is both a select and a write

#define DBG_CPU1_CMD_IREG_SEL 0xd  // There is no 'read', the current register is always read.  Use a NOP to read.

// API to do transactions on the advanced debug interface

int adbg_select_module(int chain);

int adbg_select_ctrl_reg(unsigned long regidx);

int adbg_ctrl_write(unsigned long regidx, uint32_t *cmd_data, int length_bits);

int adbg_ctrl_read(unsigned long regidx, uint32_t *data, int databits);

int adbg_burst_command(unsigned int opcode, unsigned long address, int length_words);

int adbg_wb_burst_read(int word_size_bytes, int word_count, unsigned long start_address, void *data);

int adbg_wb_burst_write(void *data, int word_size_bytes, int word_count, unsigned long start_address);

#endif