* (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
+ * SPDX-License-Identifier: GPL-2.0+
*/
/*
- * IBM 4XX DCR Functions
+ * AMCC 4XX DCR Functions
*/
#include <common.h>
#include <config.h>
#include <command.h>
-#if defined(CONFIG_4xx) && defined(CFG_CMD_SETGETDCR)
+unsigned long get_dcr (unsigned short);
+unsigned long set_dcr (unsigned short, unsigned long);
-/* ======================================================================
- * Interpreter command to retrieve an IBM PPC 4xx Device Control Register
- * ======================================================================
+/* =======================================================================
+ * Interpreter command to retrieve an AMCC PPC 4xx Device Control Register
+ * =======================================================================
*/
-int do_getdcr ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[] )
+int do_getdcr ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[] )
{
- unsigned short dcrn; /* Device Control Register Num */
- unsigned long value; /* DCR's value */
+ unsigned short dcrn; /* Device Control Register Num */
+ unsigned long value; /* DCR's value */
- unsigned long get_dcr(unsigned short);
+ unsigned long get_dcr (unsigned short);
- /* Validate arguments */
- if (argc < 2) {
- printf("Usage:\n%s\n", cmdtp->usage);
- return 1;
- }
+ /* Validate arguments */
+ if (argc < 2)
+ return CMD_RET_USAGE;
- /* Get a DCR */
- dcrn = (unsigned short)simple_strtoul(argv[ 1 ], NULL, 16);
- value = get_dcr(dcrn);
+ /* Get a DCR */
+ dcrn = (unsigned short) simple_strtoul (argv[1], NULL, 16);
+ value = get_dcr (dcrn);
- printf("%04x: %08lx\n", dcrn, value);
+ printf ("%04x: %08lx\n", dcrn, value);
- return 0;
-} /* do_getdcr */
+ return 0;
+}
/* ======================================================================
- * Interpreter command to set an IBM PPC 4xx Device Control Register
+ * Interpreter command to set an AMCC PPC 4xx Device Control Register
* ======================================================================
*/
-int do_setdcr ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+int do_setdcr (cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
+{
+ unsigned short dcrn; /* Device Control Register Num */
+ unsigned long value;
+
+ /* DCR's value */
+ int nbytes;
+
+ /* Validate arguments */
+ if (argc < 2)
+ return CMD_RET_USAGE;
+
+ /* 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;
+}
+
+/* =======================================================================
+ * 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 * const argv[])
+{
+ 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 */
+ char *ptr = NULL;
+ char buf[80];
+
+ /* Validate arguments */
+ if (argc < 3)
+ return CMD_RET_USAGE;
+
+ /* 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 format adr_dcrn.dat_dcrn */
+ *ptr++ = 0; /* erase '.', create zero-end string */
+ adr_dcrn = (unsigned short) simple_strtoul (buf, NULL, 16);
+ dat_dcrn = (unsigned short) simple_strtoul (ptr, NULL, 16);
+ } else {
+ /*
+ * First parameter has format 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 * const argv[])
{
- unsigned long get_dcr(unsigned short );
- unsigned long set_dcr(unsigned short , unsigned long );
- 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;
+ 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 */
+ char *ptr = NULL;
+ char buf[80];
+
+ /* Validate arguments */
+ if (argc < 4)
+ return CMD_RET_USAGE;
+
+ /* 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 format adr_dcrn.dat_dcrn */
+ *ptr++ = 0; /* erase '.', create zero-end string */
+ adr_dcrn = (unsigned short) simple_strtoul (buf, NULL, 16);
+ dat_dcrn = (unsigned short) simple_strtoul (ptr, NULL, 16);
} else {
- unsigned long i;
- char *endp;
- i = simple_strtoul(console_buffer, &endp, 16);
- nbytes = endp - console_buffer;
- if (nbytes)
- set_dcr(dcrn, i);
+ /*
+ * First parameter has format 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;
}
- } while (nbytes);
- return 0;
-} /* do_setdcr */
+ /* 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 IBM PPC 4xx DCR's value\n",
- "dcrn - return a DCR's value.\n"
+ "Get an AMCC PPC 4xx DCR's value",
+ "dcrn - return a DCR's value."
);
U_BOOT_CMD(
setdcr, 2, 1, do_setdcr,
- "setdcr - Set an IBM PPC 4xx DCR's value\n",
- "dcrn - set a DCR's value.\n"
+ "Set an AMCC PPC 4xx DCR's value",
+ "dcrn - set a DCR's value."
+);
+
+U_BOOT_CMD(
+ getidcr, 3, 1, do_getidcr,
+ "Get a register value via indirect DCR addressing",
+ "adr_dcrn[.dat_dcrn] offset - write offset to adr_dcrn, read value from dat_dcrn."
);
-#endif /* CONFIG_4xx & CFG_CMD_SETGETDCR */
+U_BOOT_CMD(
+ setidcr, 4, 1, do_setidcr,
+ "Set a register value via indirect DCR addressing",
+ "adr_dcrn[.dat_dcrn] offset value - write offset to adr_dcrn, write value to dat_dcrn."
+);
projects / karo-tx-uboot.git / blobdiff