Initial revision
diff --git a/common/cmd_dcr.c b/common/cmd_dcr.c
new file mode 100644
index 0000000..072685e
--- /dev/null
+++ b/common/cmd_dcr.c
@@ -0,0 +1,103 @@
+/*
+ * (C) Copyright 2001
+ * Erik Theisen, Wave 7 Optics, etheisen@mindspring.com.
+ *
+ * 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
+ */
+
+/*
+ * IBM 4XX DCR Functions
+ */
+
+#include <common.h>
+#include <config.h>
+#include <command.h>
+#include <cmd_dcr.h>
+
+#if defined(CONFIG_4xx) && defined(CFG_CMD_SETGETDCR)
+
+/* ======================================================================
+ * Interpreter command to retrieve an IBM PPC 4xx Device Control Register
+ * ======================================================================
+ */
+int do_getdcr ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[] )
+{
+ unsigned short dcrn; /* Device Control Register Num */
+ unsigned long value; /* DCR's value */
+
+ /* Validate arguments */
+ if (argc < 2) {
+ printf("Usage:\n%s\n", cmdtp->usage);
+ return 1;
+ }
+
+ /* Get a DCR */
+ dcrn = (unsigned short)simple_strtoul(argv[ 1 ], NULL, 16);
+ value = get_dcr(dcrn);
+
+ printf("%04x: %08lx\n", dcrn, value);
+
+ return 0;
+} /* do_getdcr */
+
+
+/* ======================================================================
+ * Interpreter command to set an IBM PPC 4xx Device Control Register
+ * ======================================================================
+*/
+int do_setdcr ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ unsigned short dcrn; /* Device Control Register Num */
+ unsigned long value; /* DCR's value */
+ int nbytes;
+ extern char console_buffer[];
+
+ /* Validate arguments */
+ if (argc < 2) {
+ printf("Usage:\n%s\n", cmdtp->usage);
+ return 1;
+ }
+
+ /* Set a DCR */
+ dcrn = (unsigned short)simple_strtoul(argv[1], NULL, 16);
+ do {
+ value = get_dcr(dcrn);
+ printf("%04x: %08lx", dcrn, value);
+ nbytes = readline(" ? ");
+ if (nbytes == 0) {
+ /*
+ * <CR> pressed as only input, don't modify current
+ * location and exit command.
+ */
+ nbytes = 1;
+ return 0;
+ } else {
+ unsigned long i;
+ char *endp;
+ i = simple_strtoul(console_buffer, &endp, 16);
+ nbytes = endp - console_buffer;
+ if (nbytes)
+ set_dcr(dcrn, i);
+ }
+ } while (nbytes);
+
+ return 0;
+} /* do_setdcr */
+
+#endif /* CONFIG_4xx & CFG_CMD_SETGETDCR */