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