mips32_pracc.h

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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 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 */
};
 
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 mips_ejtag *ejtag_info, uint32_t *regs);
int mips32_pracc_write_regs(struct mips_ejtag *ejtag_info, uint32_t *regs);
 
int mips32_cp0_read(struct mips_ejtag *ejtag_info,
        uint32_t *val, uint32_t cp0_reg, uint32_t cp0_sel);
 
int mips32_cp0_write(struct mips_ejtag *ejtag_info,
        uint32_t val, uint32_t cp0_reg, uint32_t cp0_sel);
 
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 */