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-rw-r--r--cmd/fpgad.c101
1 files changed, 101 insertions, 0 deletions
diff --git a/cmd/fpgad.c b/cmd/fpgad.c
new file mode 100644
index 0000000..5370c3e
--- /dev/null
+++ b/cmd/fpgad.c
@@ -0,0 +1,101 @@
+/*
+ * (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 <console.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]"
+);