==== //depot/Alchemy/ppc/uboot/u-boot-1.1.4/common/cmd_dcr.c#1 - /home/leonid/pd/ppc/uboot/u-boot-1.1.4/common/cmd_dcr.c ====
@@ -104,10 +104,126 @@
 	} while (nbytes);
 
 	return 0;
 }
 
+/* =======================================================================
+ * Interpreter command to retrieve an register value through AMCC PPC 4xx 
+ * Device Control Register inderect addressing.
+ * =======================================================================
+ */
+int do_getidcr ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[] )
+{
+	unsigned long get_dcr (unsigned short);
+	unsigned long set_dcr (unsigned short, unsigned long);
+	unsigned short   adr_dcrn;	/* Device Control Register Num for Address */
+	unsigned short   dat_dcrn;	/* Device Control Register Num for Data */
+        unsigned short     offset;      /* Register's offset */
+	unsigned long     value;	/* register's value */
+        unsigned char     * ptr=NULL, buf[80];
+
+	/* Validate arguments */
+	if (argc < 3) {
+		printf ("Usage:\n%s\n", cmdtp->usage);
+		return 1;
+	}
+
+	/* Find out whether ther is '.' (dot) symbol in the first parameter. */
+        strncpy(buf, argv[1], sizeof(buf)-1);
+        buf[sizeof(buf)-1]=0; /* will guarantee zero-end string */
+        ptr  = strchr(buf, '.');	
+         
+	if(ptr != NULL)
+	  {/* first parameter has fromat adr_dcrn.dat_dcrn */
+	    * ptr = 0; /* erase '.', create zero-end string */
+	    ptr++; /* will point to dat_dcr */
+	   adr_dcrn = (unsigned short) simple_strtoul (buf, NULL, 16);
+	   dat_dcrn = (unsigned short) simple_strtoul (ptr, NULL, 16);
+	  }
+        else
+          { /* first parameter has fromat adr_dcrn; dat_dcrn will be
+               calculated as adr_dcrn+1. */
+	   adr_dcrn = (unsigned short) simple_strtoul (buf, NULL, 16);
+           dat_dcrn = adr_dcrn+1;
+	  }
+
+	/* Register's offset */
+        offset = (unsigned short) simple_strtoul (argv[2], NULL, 16);
+
+	/* Disable interrupts */
+	disable_interrupts();
+	/* Set offset */
+        set_dcr(adr_dcrn, offset);
+	/* get data */
+	value = get_dcr(dat_dcrn);
+	/* Enable interrupts */
+	enable_interrupts();
+
+	printf ("%04x.%04x-%04x Read  %08lx\n", adr_dcrn, dat_dcrn, offset, value);
+
+	return 0;
+}
+
+/* =======================================================================
+ * Interpreter command to update an register value through AMCC PPC 4xx 
+ * Device Control Register inderect addressing.
+ * =======================================================================
+ */
+int do_setidcr (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
+{
+	unsigned long get_dcr (unsigned short);
+	unsigned long set_dcr (unsigned short, unsigned long);
+	unsigned short   adr_dcrn;	/* Device Control Register Num for Address */
+	unsigned short   dat_dcrn;	/* Device Control Register Num for Data */
+        unsigned short     offset;      /* Register's offset */
+	unsigned long     value;	/* register's value */
+        unsigned char     * ptr=NULL, buf[80];
+
+	/* Validate arguments */
+	if (argc < 4) {
+		printf ("Usage:\n%s\n", cmdtp->usage);
+		return 1;
+	}
+
+	/* Find out whether ther is '.' (dot) symbol in the first parameter. */
+        strncpy(buf, argv[1], sizeof(buf)-1);
+        buf[sizeof(buf)-1]=0; /* will guarantee zero-end string */
+        ptr  = strchr(buf, '.');	
+         
+	if(ptr != NULL)
+	  {/* first parameter has fromat adr_dcrn.dat_dcrn */
+	    * ptr = 0; /* erase '.', create zero-end string */
+	    ptr++; /* will point to dat_dcr */
+	   adr_dcrn = (unsigned short) simple_strtoul (buf, NULL, 16);
+	   dat_dcrn = (unsigned short) simple_strtoul (ptr, NULL, 16);
+	  }
+        else
+          { /* first parameter has fromat adr_dcrn; dat_dcrn will be
+               calculated as adr_dcrn+1. */
+	   adr_dcrn = (unsigned short) simple_strtoul (buf, NULL, 16);
+           dat_dcrn = adr_dcrn+1;
+	  }
+
+	/* Register's offset */
+        offset = (unsigned short) simple_strtoul (argv[2], NULL, 16);
+	/* New value */
+        value  = (unsigned  long) simple_strtoul (argv[3], NULL, 16);
+
+	/* Disable interrupts */
+	disable_interrupts();
+	/* Set offset */
+        set_dcr(adr_dcrn, offset);
+	/* set data */
+	set_dcr(dat_dcrn, value);
+	/* Enable interrupts */
+	enable_interrupts();
+
+	printf ("%04x.%04x-%04x Write %08lx\n", adr_dcrn, dat_dcrn, offset, value);
+
+	return 0;
+}
+
 /***************************************************/
 
 U_BOOT_CMD(
 	getdcr,	2,	1,	do_getdcr,
 	"getdcr  - Get an AMCC PPC 4xx DCR's value\n",
@@ -117,6 +233,18 @@
 	setdcr,	2,	1,	do_setdcr,
 	"setdcr  - Set an AMCC PPC 4xx DCR's value\n",
 	"dcrn - set a DCR's value.\n"
 );
 
+U_BOOT_CMD(
+	getidcr,	3,	1,	do_getidcr,
+	"getidcr - Get a register value via indirect DCR addressing\n",
+	"adr_dcrn[.dat_dcrn] offset - write offset to adr_dcrn, read value from dat_dcrn.\n"
+);
+
+U_BOOT_CMD(
+	setidcr,	4,	1,	do_setidcr,
+	"setidcr - Set a register value via indirect DCR addressing\n",
+	"adr_dcrn[.dat_dcrn] offset value - write offset to adr_dcrn, write value to dat_dcrn.\n"
+);
+
 #endif /* CONFIG_4xx & CFG_CMD_SETGETDCR */