3 * Erik Theisen, Wave 7 Optics, etheisen@mindspring.com.
5 * See file CREDITS for list of people who contributed to this
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.
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.
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,
25 * AMCC 4XX DCR Functions
32 #if defined(CONFIG_4xx) && (CONFIG_COMMANDS & CFG_CMD_SETGETDCR)
34 unsigned long get_dcr (unsigned short);
35 unsigned long set_dcr (unsigned short, unsigned long);
37 /* =======================================================================
38 * Interpreter command to retrieve an AMCC PPC 4xx Device Control Register
39 * =======================================================================
41 int do_getdcr ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[] )
43 unsigned short dcrn; /* Device Control Register Num */
44 unsigned long value; /* DCR's value */
46 unsigned long get_dcr (unsigned short);
48 /* Validate arguments */
50 printf ("Usage:\n%s\n", cmdtp->usage);
55 dcrn = (unsigned short) simple_strtoul (argv[1], NULL, 16);
56 value = get_dcr (dcrn);
58 printf ("%04x: %08lx\n", dcrn, value);
64 /* ======================================================================
65 * Interpreter command to set an AMCC PPC 4xx Device Control Register
66 * ======================================================================
68 int do_setdcr (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
70 unsigned short dcrn; /* Device Control Register Num */
75 extern char console_buffer[];
77 /* Validate arguments */
79 printf ("Usage:\n%s\n", cmdtp->usage);
84 dcrn = (unsigned short) simple_strtoul (argv[1], NULL, 16);
86 value = get_dcr (dcrn);
87 printf ("%04x: %08lx", dcrn, value);
88 nbytes = readline (" ? ");
91 * <CR> pressed as only input, don't modify current
92 * location and exit command.
100 i = simple_strtoul (console_buffer, &endp, 16);
101 nbytes = endp - console_buffer;
110 /* =======================================================================
111 * Interpreter command to retrieve an register value through AMCC PPC 4xx
112 * Device Control Register inderect addressing.
113 * =======================================================================
115 int do_getidcr (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
117 unsigned short adr_dcrn; /* Device Control Register Num for Address */
118 unsigned short dat_dcrn; /* Device Control Register Num for Data */
119 unsigned short offset; /* Register's offset */
120 unsigned long value; /* Register's value */
124 /* Validate arguments */
126 printf ("Usage:\n%s\n", cmdtp->usage);
130 /* Find out whether ther is '.' (dot) symbol in the first parameter. */
131 strncpy (buf, argv[1], sizeof(buf)-1);
132 buf[sizeof(buf)-1] = 0; /* will guarantee zero-end string */
133 ptr = strchr (buf, '.');
136 /* First parameter has format adr_dcrn.dat_dcrn */
137 *ptr++ = 0; /* erase '.', create zero-end string */
138 adr_dcrn = (unsigned short) simple_strtoul (buf, NULL, 16);
139 dat_dcrn = (unsigned short) simple_strtoul (ptr, NULL, 16);
142 * First parameter has format adr_dcrn; dat_dcrn will be
143 * calculated as adr_dcrn+1.
145 adr_dcrn = (unsigned short) simple_strtoul (buf, NULL, 16);
146 dat_dcrn = adr_dcrn+1;
149 /* Register's offset */
150 offset = (unsigned short) simple_strtoul (argv[2], NULL, 16);
152 /* Disable interrupts */
153 disable_interrupts ();
155 set_dcr (adr_dcrn, offset);
157 value = get_dcr (dat_dcrn);
158 /* Enable interrupts */
159 enable_interrupts ();
161 printf ("%04x.%04x-%04x Read %08lx\n", adr_dcrn, dat_dcrn, offset, value);
166 /* =======================================================================
167 * Interpreter command to update an register value through AMCC PPC 4xx
168 * Device Control Register inderect addressing.
169 * =======================================================================
171 int do_setidcr (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
173 unsigned short adr_dcrn; /* Device Control Register Num for Address */
174 unsigned short dat_dcrn; /* Device Control Register Num for Data */
175 unsigned short offset; /* Register's offset */
176 unsigned long value; /* Register's value */
180 /* Validate arguments */
182 printf ("Usage:\n%s\n", cmdtp->usage);
186 /* Find out whether ther is '.' (dot) symbol in the first parameter. */
187 strncpy (buf, argv[1], sizeof(buf)-1);
188 buf[sizeof(buf)-1] = 0; /* will guarantee zero-end string */
189 ptr = strchr (buf, '.');
192 /* First parameter has format adr_dcrn.dat_dcrn */
193 *ptr++ = 0; /* erase '.', create zero-end string */
194 adr_dcrn = (unsigned short) simple_strtoul (buf, NULL, 16);
195 dat_dcrn = (unsigned short) simple_strtoul (ptr, NULL, 16);
198 * First parameter has format adr_dcrn; dat_dcrn will be
199 * calculated as adr_dcrn+1.
201 adr_dcrn = (unsigned short) simple_strtoul (buf, NULL, 16);
202 dat_dcrn = adr_dcrn+1;
205 /* Register's offset */
206 offset = (unsigned short) simple_strtoul (argv[2], NULL, 16);
208 value = (unsigned long) simple_strtoul (argv[3], NULL, 16);
210 /* Disable interrupts */
211 disable_interrupts ();
213 set_dcr (adr_dcrn, offset);
215 set_dcr (dat_dcrn, value);
216 /* Enable interrupts */
217 enable_interrupts ();
219 printf ("%04x.%04x-%04x Write %08lx\n", adr_dcrn, dat_dcrn, offset, value);
224 /***************************************************/
227 getdcr, 2, 1, do_getdcr,
228 "getdcr - Get an AMCC PPC 4xx DCR's value\n",
229 "dcrn - return a DCR's value.\n"
232 setdcr, 2, 1, do_setdcr,
233 "setdcr - Set an AMCC PPC 4xx DCR's value\n",
234 "dcrn - set a DCR's value.\n"
238 getidcr, 3, 1, do_getidcr,
239 "getidcr - Get a register value via indirect DCR addressing\n",
240 "adr_dcrn[.dat_dcrn] offset - write offset to adr_dcrn, read value from dat_dcrn.\n"
244 setidcr, 4, 1, do_setidcr,
245 "setidcr - Set a register value via indirect DCR addressing\n",
246 "adr_dcrn[.dat_dcrn] offset value - write offset to adr_dcrn, write value to dat_dcrn.\n"
249 #endif /* CONFIG_4xx & CFG_CMD_SETGETDCR */