powerpc/ppc4xx: Add fpgad command for dumping gdsys fpga registers

Signed-off-by: Dirk Eibach <dirk.eibach@gdsys.cc>
Signed-off-by: Stefan Roese <sr@denx.de>

common/Makefile

@@ -92,6 +92,7 @@ COBJS-$(CONFIG_CMD_FLASH) += cmd_flash.o
 ifdef CONFIG_FPGA
 COBJS-$(CONFIG_CMD_FPGA) += cmd_fpga.o
 endif
+COBJS-$(CONFIG_CMD_FPGAD) += cmd_fpgad.o
 COBJS-$(CONFIG_CMD_FS_GENERIC) += cmd_fs.o
 COBJS-$(CONFIG_CMD_FUSE) += cmd_fuse.o
 COBJS-$(CONFIG_CMD_GETTIME) += cmd_gettime.o

common/cmd_fpgad.c

@@ -0,0 +1,100 @@
+/*
+ * (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.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#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]"
+);