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/* SPDX-License-Identifier: GPL-2.0-or-later */
/***************************************************************************
* Copyright (C) 2008 by Spencer Oliver *
* spen@spen-soft.co.uk *
* *
* Copyright (C) 2008 by David T.L. Wong *
* *
* Copyright (C) 2011 by Drasko DRASKOVIC *
* drasko.draskovic@gmail.com *
***************************************************************************/
#ifndef OPENOCD_TARGET_MIPS32_PRACC_H
#define OPENOCD_TARGET_MIPS32_PRACC_H
#include <target/mips32.h>
#include <target/mips_ejtag.h>
#define MIPS32_PRACC_FASTDATA_AREA 0xFF200000
#define MIPS32_PRACC_FASTDATA_SIZE 16
#define MIPS32_PRACC_BASE_ADDR 0xFF200000
#define MIPS32_PRACC_TEXT 0xFF200200
#define MIPS32_PRACC_PARAM_OUT 0xFF202000
#define PRACC_UPPER_BASE_ADDR (MIPS32_PRACC_BASE_ADDR >> 16)
#define PRACC_MAX_CODE (MIPS32_PRACC_PARAM_OUT - MIPS32_PRACC_TEXT)
#define PRACC_MAX_INSTRUCTIONS (PRACC_MAX_CODE / 4)
#define PRACC_OUT_OFFSET (MIPS32_PRACC_PARAM_OUT - MIPS32_PRACC_BASE_ADDR)
#define MIPS32_FASTDATA_HANDLER_SIZE 0x80
#define UPPER16(addr) ((addr) >> 16)
#define LOWER16(addr) ((addr) & 0xFFFF)
#define NEG16(v) (((~(v)) + 1) & 0xFFFF)
#define SWAP16(v) ((LOWER16(v) << 16) | (UPPER16(v)))
/*#define NEG18(v) (((~(v)) + 1) & 0x3FFFF)*/
#define PRACC_BLOCK 128 /* 1 Kbyte */
struct mips32_common;
struct pa_list {
uint32_t instr;
uint32_t addr;
};
struct pracc_queue_info {
struct mips_ejtag *ejtag_info;
unsigned isa;
int retval;
int code_count;
int store_count;
int max_code; /* max instructions with currently allocated memory */
struct pa_list *pracc_list; /* Code and store addresses at dmseg */
};
struct mips32_common;
void pracc_queue_init(struct pracc_queue_info *ctx);
void pracc_add(struct pracc_queue_info *ctx, uint32_t addr, uint32_t instr);
void pracc_queue_free(struct pracc_queue_info *ctx);
int mips32_pracc_queue_exec(struct mips_ejtag *ejtag_info,
struct pracc_queue_info *ctx, uint32_t *buf, bool check_last);
int mips32_pracc_read_mem(struct mips_ejtag *ejtag_info,
uint32_t addr, int size, int count, void *buf);
int mips32_pracc_write_mem(struct mips_ejtag *ejtag_info,
uint32_t addr, int size, int count, const void *buf);
int mips32_pracc_fastdata_xfer(struct mips_ejtag *ejtag_info, struct working_area *source,
int write_t, uint32_t addr, int count, uint32_t *buf);
int mips32_pracc_read_regs(struct mips32_common *mips32);
int mips32_pracc_write_regs(struct mips32_common *mips32);
/**
* \b mips32_cp0_read
*
* Simulates mfc0 ASM instruction (Move From C0),
* i.e. implements copro C0 Register read.
*
* @param[in] ejtag_info
* @param[in] val Storage to hold read value
* @param[in] cp0_reg Number of copro C0 register we want to read
* @param[in] cp0_sel Select for the given C0 register
*
* @return ERROR_OK on Success, ERROR_FAIL otherwise
*/
int mips32_cp0_read(struct mips_ejtag *ejtag_info,
uint32_t *val, uint32_t cp0_reg, uint32_t cp0_sel);
/**
* \b mips32_cp0_write
*
* Simulates mtc0 ASM instruction (Move To C0),
* i.e. implements copro C0 Register read.
*
* @param[in] ejtag_info
* @param[in] val Value to be written
* @param[in] cp0_reg Number of copro C0 register we want to write to
* @param[in] cp0_sel Select for the given C0 register
*
* @return ERROR_OK on Success, ERROR_FAIL otherwise
*/
int mips32_cp0_write(struct mips_ejtag *ejtag_info,
uint32_t val, uint32_t cp0_reg, uint32_t cp0_sel);
/**
* mips32_cp1_control_read
*
* @brief Simulates cfc1 ASM instruction (Move Control Word From Floating Point),
* i.e. implements copro C1 Control Register read.
*
* @param[in] ejtag_info
* @param[in] val Storage to hold read value
* @param[in] cp1_c_reg Number of copro C1 control register we want to read
*
* @return ERROR_OK on Success, ERROR_FAIL otherwise
*/
int mips32_cp1_control_read(struct mips_ejtag *ejtag_info,
uint32_t *val, uint32_t cp1_c_reg);
static inline void pracc_swap16_array(struct mips_ejtag *ejtag_info, uint32_t *buf, int count)
{
if (ejtag_info->isa && ejtag_info->endianness)
for (int i = 0; i != count; i++)
buf[i] = SWAP16(buf[i]);
}
#endif /* OPENOCD_TARGET_MIPS32_PRACC_H */