cmd_fpgad.c
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/*
* (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)];
ulong nbytes;
/*
* 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);
}
nbytes = length * sizeof(u16);
do {
ulong linebytes = (nbytes > DISP_LINE_LEN) ?
DISP_LINE_LEN : nbytes;
for (k = 0; k < linebytes / sizeof(u16); ++k)
fpga_get_reg(fpga,
(u16 *)fpga_ptr[fpga] + addr
/ sizeof(u16) + k,
addr + k * sizeof(u16),
&linebuf[k]);
print_buffer(addr, (void *)linebuf, sizeof(u16),
linebytes / sizeof(u16),
DISP_LINE_LEN / sizeof(u16));
nbytes -= linebytes;
addr += linebytes;
if (ctrlc()) {
rc = 1;
break;
}
} while (nbytes > 0);
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]"
);