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wdenk38635852002-08-27 05:55:31 +00001/*
2 * (C) Copyright 2001
3 * Erik Theisen, Wave 7 Optics, etheisen@mindspring.com.
4 *
5 * See file CREDITS for list of people who contributed to this
6 * project.
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
21 * MA 02111-1307 USA
22 */
23
24/*
Wolfgang Denk0c8721a2005-09-23 11:05:55 +020025 * AMCC 4XX DCR Functions
wdenk38635852002-08-27 05:55:31 +000026 */
27
28#include <common.h>
29#include <config.h>
30#include <command.h>
wdenk38635852002-08-27 05:55:31 +000031
Stefan Roeseaf9e1f52006-10-17 06:14:31 +020032unsigned long get_dcr (unsigned short);
33unsigned long set_dcr (unsigned short, unsigned long);
34
Wolfgang Denk0c8721a2005-09-23 11:05:55 +020035/* =======================================================================
36 * Interpreter command to retrieve an AMCC PPC 4xx Device Control Register
37 * =======================================================================
wdenk38635852002-08-27 05:55:31 +000038 */
Wolfgang Denk54841ab2010-06-28 22:00:46 +020039int do_getdcr ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[] )
wdenk38635852002-08-27 05:55:31 +000040{
Wolfgang Denk0c8721a2005-09-23 11:05:55 +020041 unsigned short dcrn; /* Device Control Register Num */
42 unsigned long value; /* DCR's value */
wdenk38635852002-08-27 05:55:31 +000043
Wolfgang Denk0c8721a2005-09-23 11:05:55 +020044 unsigned long get_dcr (unsigned short);
wdenk8bde7f72003-06-27 21:31:46 +000045
Wolfgang Denk0c8721a2005-09-23 11:05:55 +020046 /* Validate arguments */
47 if (argc < 2) {
Peter Tyser62c3ae72009-01-27 18:03:10 -060048 cmd_usage(cmdtp);
Wolfgang Denk0c8721a2005-09-23 11:05:55 +020049 return 1;
50 }
wdenk38635852002-08-27 05:55:31 +000051
Wolfgang Denk0c8721a2005-09-23 11:05:55 +020052 /* Get a DCR */
53 dcrn = (unsigned short) simple_strtoul (argv[1], NULL, 16);
54 value = get_dcr (dcrn);
wdenk38635852002-08-27 05:55:31 +000055
Wolfgang Denk0c8721a2005-09-23 11:05:55 +020056 printf ("%04x: %08lx\n", dcrn, value);
wdenk38635852002-08-27 05:55:31 +000057
Wolfgang Denk0c8721a2005-09-23 11:05:55 +020058 return 0;
59}
wdenk38635852002-08-27 05:55:31 +000060
61
62/* ======================================================================
Wolfgang Denk0c8721a2005-09-23 11:05:55 +020063 * Interpreter command to set an AMCC PPC 4xx Device Control Register
wdenk38635852002-08-27 05:55:31 +000064 * ======================================================================
65*/
Wolfgang Denk54841ab2010-06-28 22:00:46 +020066int do_setdcr (cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
wdenk38635852002-08-27 05:55:31 +000067{
Wolfgang Denk0c8721a2005-09-23 11:05:55 +020068 unsigned short dcrn; /* Device Control Register Num */
69 unsigned long value;
wdenk38635852002-08-27 05:55:31 +000070
Wolfgang Denk0c8721a2005-09-23 11:05:55 +020071 /* DCR's value */
72 int nbytes;
73 extern char console_buffer[];
wdenk38635852002-08-27 05:55:31 +000074
Wolfgang Denk0c8721a2005-09-23 11:05:55 +020075 /* Validate arguments */
76 if (argc < 2) {
Peter Tyser62c3ae72009-01-27 18:03:10 -060077 cmd_usage(cmdtp);
Wolfgang Denk0c8721a2005-09-23 11:05:55 +020078 return 1;
wdenk8bde7f72003-06-27 21:31:46 +000079 }
wdenk38635852002-08-27 05:55:31 +000080
Wolfgang Denk0c8721a2005-09-23 11:05:55 +020081 /* Set a DCR */
82 dcrn = (unsigned short) simple_strtoul (argv[1], NULL, 16);
83 do {
84 value = get_dcr (dcrn);
85 printf ("%04x: %08lx", dcrn, value);
86 nbytes = readline (" ? ");
87 if (nbytes == 0) {
88 /*
89 * <CR> pressed as only input, don't modify current
90 * location and exit command.
91 */
92 nbytes = 1;
93 return 0;
94 } else {
95 unsigned long i;
96 char *endp;
97
98 i = simple_strtoul (console_buffer, &endp, 16);
99 nbytes = endp - console_buffer;
100 if (nbytes)
101 set_dcr (dcrn, i);
102 }
103 } while (nbytes);
104
105 return 0;
106}
wdenk38635852002-08-27 05:55:31 +0000107
Stefan Roeseaf9e1f52006-10-17 06:14:31 +0200108/* =======================================================================
109 * Interpreter command to retrieve an register value through AMCC PPC 4xx
110 * Device Control Register inderect addressing.
111 * =======================================================================
112 */
Wolfgang Denk54841ab2010-06-28 22:00:46 +0200113int do_getidcr (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
Stefan Roeseaf9e1f52006-10-17 06:14:31 +0200114{
115 unsigned short adr_dcrn; /* Device Control Register Num for Address */
116 unsigned short dat_dcrn; /* Device Control Register Num for Data */
117 unsigned short offset; /* Register's offset */
118 unsigned long value; /* Register's value */
119 char *ptr = NULL;
120 char buf[80];
121
122 /* Validate arguments */
123 if (argc < 3) {
Peter Tyser62c3ae72009-01-27 18:03:10 -0600124 cmd_usage(cmdtp);
Stefan Roeseaf9e1f52006-10-17 06:14:31 +0200125 return 1;
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200126 }
Stefan Roeseaf9e1f52006-10-17 06:14:31 +0200127
128 /* Find out whether ther is '.' (dot) symbol in the first parameter. */
129 strncpy (buf, argv[1], sizeof(buf)-1);
130 buf[sizeof(buf)-1] = 0; /* will guarantee zero-end string */
131 ptr = strchr (buf, '.');
132
133 if (ptr != NULL) {
134 /* First parameter has format adr_dcrn.dat_dcrn */
135 *ptr++ = 0; /* erase '.', create zero-end string */
136 adr_dcrn = (unsigned short) simple_strtoul (buf, NULL, 16);
137 dat_dcrn = (unsigned short) simple_strtoul (ptr, NULL, 16);
138 } else {
139 /*
140 * First parameter has format adr_dcrn; dat_dcrn will be
141 * calculated as adr_dcrn+1.
142 */
143 adr_dcrn = (unsigned short) simple_strtoul (buf, NULL, 16);
144 dat_dcrn = adr_dcrn+1;
145 }
146
147 /* Register's offset */
148 offset = (unsigned short) simple_strtoul (argv[2], NULL, 16);
149
150 /* Disable interrupts */
151 disable_interrupts ();
152 /* Set offset */
153 set_dcr (adr_dcrn, offset);
154 /* get data */
155 value = get_dcr (dat_dcrn);
156 /* Enable interrupts */
157 enable_interrupts ();
158
159 printf ("%04x.%04x-%04x Read %08lx\n", adr_dcrn, dat_dcrn, offset, value);
160
161 return 0;
162}
163
164/* =======================================================================
165 * Interpreter command to update an register value through AMCC PPC 4xx
166 * Device Control Register inderect addressing.
167 * =======================================================================
168 */
Wolfgang Denk54841ab2010-06-28 22:00:46 +0200169int do_setidcr (cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
Stefan Roeseaf9e1f52006-10-17 06:14:31 +0200170{
171 unsigned short adr_dcrn; /* Device Control Register Num for Address */
172 unsigned short dat_dcrn; /* Device Control Register Num for Data */
173 unsigned short offset; /* Register's offset */
174 unsigned long value; /* Register's value */
175 char *ptr = NULL;
176 char buf[80];
177
178 /* Validate arguments */
179 if (argc < 4) {
Peter Tyser62c3ae72009-01-27 18:03:10 -0600180 cmd_usage(cmdtp);
Stefan Roeseaf9e1f52006-10-17 06:14:31 +0200181 return 1;
Wolfgang Denk2b2a40b2006-10-26 16:24:31 +0200182 }
Stefan Roeseaf9e1f52006-10-17 06:14:31 +0200183
184 /* Find out whether ther is '.' (dot) symbol in the first parameter. */
185 strncpy (buf, argv[1], sizeof(buf)-1);
186 buf[sizeof(buf)-1] = 0; /* will guarantee zero-end string */
187 ptr = strchr (buf, '.');
188
189 if (ptr != NULL) {
190 /* First parameter has format adr_dcrn.dat_dcrn */
191 *ptr++ = 0; /* erase '.', create zero-end string */
192 adr_dcrn = (unsigned short) simple_strtoul (buf, NULL, 16);
193 dat_dcrn = (unsigned short) simple_strtoul (ptr, NULL, 16);
194 } else {
195 /*
196 * First parameter has format adr_dcrn; dat_dcrn will be
197 * calculated as adr_dcrn+1.
198 */
Wolfgang Denk2b2a40b2006-10-26 16:24:31 +0200199 adr_dcrn = (unsigned short) simple_strtoul (buf, NULL, 16);
200 dat_dcrn = adr_dcrn+1;
201 }
Stefan Roeseaf9e1f52006-10-17 06:14:31 +0200202
203 /* Register's offset */
204 offset = (unsigned short) simple_strtoul (argv[2], NULL, 16);
205 /* New value */
206 value = (unsigned long) simple_strtoul (argv[3], NULL, 16);
207
208 /* Disable interrupts */
209 disable_interrupts ();
210 /* Set offset */
211 set_dcr (adr_dcrn, offset);
212 /* set data */
213 set_dcr (dat_dcrn, value);
214 /* Enable interrupts */
215 enable_interrupts ();
216
217 printf ("%04x.%04x-%04x Write %08lx\n", adr_dcrn, dat_dcrn, offset, value);
218
219 return 0;
220}
221
wdenk8bde7f72003-06-27 21:31:46 +0000222/***************************************************/
223
wdenk0d498392003-07-01 21:06:45 +0000224U_BOOT_CMD(
225 getdcr, 2, 1, do_getdcr,
Peter Tyser2fb26042009-01-27 18:03:12 -0600226 "Get an AMCC PPC 4xx DCR's value",
Wolfgang Denka89c33d2009-05-24 17:06:54 +0200227 "dcrn - return a DCR's value."
wdenk8bde7f72003-06-27 21:31:46 +0000228);
wdenk0d498392003-07-01 21:06:45 +0000229U_BOOT_CMD(
230 setdcr, 2, 1, do_setdcr,
Peter Tyser2fb26042009-01-27 18:03:12 -0600231 "Set an AMCC PPC 4xx DCR's value",
Wolfgang Denka89c33d2009-05-24 17:06:54 +0200232 "dcrn - set a DCR's value."
wdenk8bde7f72003-06-27 21:31:46 +0000233);
234
Stefan Roeseaf9e1f52006-10-17 06:14:31 +0200235U_BOOT_CMD(
236 getidcr, 3, 1, do_getidcr,
Peter Tyser2fb26042009-01-27 18:03:12 -0600237 "Get a register value via indirect DCR addressing",
Wolfgang Denka89c33d2009-05-24 17:06:54 +0200238 "adr_dcrn[.dat_dcrn] offset - write offset to adr_dcrn, read value from dat_dcrn."
Stefan Roeseaf9e1f52006-10-17 06:14:31 +0200239);
240
241U_BOOT_CMD(
242 setidcr, 4, 1, do_setidcr,
Peter Tyser2fb26042009-01-27 18:03:12 -0600243 "Set a register value via indirect DCR addressing",
Wolfgang Denka89c33d2009-05-24 17:06:54 +0200244 "adr_dcrn[.dat_dcrn] offset value - write offset to adr_dcrn, write value to dat_dcrn."
Stefan Roeseaf9e1f52006-10-17 06:14:31 +0200245);