/*
   * (C) Copyright 2013
   * Dirk Eibach,  Guntermann & Drunck GmbH, dirk.eibach@gdsys.cc
   *
   * based on cmd_mem.c
   * (C) Copyright 2000
   * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   *

   * SPDX-License-Identifier:	GPL-2.0+

   */
  
  #include <common.h>
  #include <command.h>
  
  #include <gdsys_fpga.h>
  
  static uint	dp_last_fpga;
  static uint	dp_last_addr;
  static uint	dp_last_length = 0x40;
  
  /*
   * FPGA Memory Display
   *
   * Syntax:
   *	fpgad {fpga} {addr} {len}
   */
  #define DISP_LINE_LEN	16
  int do_fpga_md(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  {
  	unsigned int k;
  	unsigned int fpga;
  	ulong	addr, length;
  	int rc = 0;
  	u16	linebuf[DISP_LINE_LEN/sizeof(u16)];
  
  	/*
  	 * We use the last specified parameters, unless new ones are
  	 * entered.
  	 */
  	fpga = dp_last_fpga;
  	addr = dp_last_addr;
  	length = dp_last_length;
  
  	if (argc < 3)
  		return CMD_RET_USAGE;
  
  	if ((flag & CMD_FLAG_REPEAT) == 0) {
  		/*
  		 * FPGA is specified since argc > 2
  		 */
  		fpga = simple_strtoul(argv[1], NULL, 16);
  
  		/*
  		 * Address is specified since argc > 2
  		 */
  		addr = simple_strtoul(argv[2], NULL, 16);
  
  		/*
  		 * If another parameter, it is the length to display.
  		 * Length is the number of objects, not number of bytes.
  		 */
  		if (argc > 3)
  			length = simple_strtoul(argv[3], NULL, 16);
  	}
  
  	/* Print the lines. */
  	for (k = 0; k < DISP_LINE_LEN / sizeof(u16); ++k)
  		fpga_get_reg(fpga, (u16 *)fpga_ptr[fpga] + k, k * sizeof(u16),
  			     &linebuf[k]);
  	print_buffer(addr, (void *)linebuf, sizeof(u16),
  		     length, DISP_LINE_LEN / sizeof(u16));
  	addr += sizeof(u16)*length;
  
  	dp_last_fpga = fpga;
  	dp_last_addr = addr;
  	dp_last_length = length;
  	return rc;
  }
  
  U_BOOT_CMD(
  	fpgad,	4,	1,	do_fpga_md,
  	"fpga register display",
  	"fpga address [# of objects]"
  );