blob: 34c6675fd8a13243f98681f325c492190e0cd875 [file] [log] [blame]
wdenke2211742002-11-02 23:30:20 +00001/***********************************************************************
2 *
3M* Modul: lwmon.c
4M*
5M* Content: LWMON specific U-Boot commands.
6 *
7 * (C) Copyright 2001, 2002
8 * DENX Software Engineering
9 * Wolfgang Denk, wd@denx.de
wdenke2211742002-11-02 23:30:20 +000010 *
11D* Design: wd@denx.de
12C* Coding: wd@denx.de
13V* Verification: dzu@denx.de
14 *
15 * See file CREDITS for list of people who contributed to this
16 * project.
17 *
18 * This program is free software; you can redistribute it and/or
19 * modify it under the terms of the GNU General Public License as
20 * published by the Free Software Foundation; either version 2 of
21 * the License, or (at your option) any later version.
22 *
23 * This program is distributed in the hope that it will be useful,
24 * but WITHOUT ANY WARRANTY; without even the implied warranty of
25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
26 * GNU General Public License for more details.
27 *
28 * You should have received a copy of the GNU General Public License
29 * along with this program; if not, write to the Free Software
30 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
31 * MA 02111-1307 USA
32 ***********************************************************************/
33
34/*---------------------------- Headerfiles ----------------------------*/
35#include <common.h>
36#include <mpc8xx.h>
37#include <commproc.h>
38#include <i2c.h>
39#include <command.h>
wdenke2211742002-11-02 23:30:20 +000040#include <malloc.h>
41#include <post.h>
wdenk281e00a2004-08-01 22:48:16 +000042#include <serial.h>
wdenke2211742002-11-02 23:30:20 +000043
44#include <linux/types.h>
45#include <linux/string.h> /* for strdup */
46
Wolfgang Denkd87080b2006-03-31 18:32:53 +020047DECLARE_GLOBAL_DATA_PTR;
48
wdenke2211742002-11-02 23:30:20 +000049/*------------------------ Local prototypes ---------------------------*/
50static long int dram_size (long int, long int *, long int);
wdenk4532cb62003-04-27 22:52:51 +000051static void kbd_init (void);
52static int compare_magic (uchar *kbd_data, uchar *str);
wdenke2211742002-11-02 23:30:20 +000053
54
55/*--------------------- Local macros and constants --------------------*/
56#define _NOT_USED_ 0xFFFFFFFF
57
wdenk4532cb62003-04-27 22:52:51 +000058#ifdef CONFIG_MODEM_SUPPORT
59static int key_pressed(void);
60extern void disable_putc(void);
61#endif /* CONFIG_MODEM_SUPPORT */
62
wdenke2211742002-11-02 23:30:20 +000063/*
64 * 66 MHz SDRAM access using UPM A
65 */
66const uint sdram_table[] =
67{
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020068#if defined(CONFIG_SYS_MEMORY_75) || defined(CONFIG_SYS_MEMORY_8E)
wdenke2211742002-11-02 23:30:20 +000069 /*
70 * Single Read. (Offset 0 in UPM RAM)
71 */
72 0x1F0DFC04, 0xEEAFBC04, 0x11AF7C04, 0xEFBAFC00,
73 0x1FF5FC47, /* last */
74 /*
75 * SDRAM Initialization (offset 5 in UPM RAM)
76 *
wdenk8bde7f72003-06-27 21:31:46 +000077 * This is no UPM entry point. The following definition uses
78 * the remaining space to establish an initialization
79 * sequence, which is executed by a RUN command.
wdenke2211742002-11-02 23:30:20 +000080 *
81 */
82 0x1FF5FC34, 0xEFEABC34, 0x1FB57C35, /* last */
83 /*
84 * Burst Read. (Offset 8 in UPM RAM)
85 */
86 0x1F0DFC04, 0xEEAFBC04, 0x10AF7C04, 0xF0AFFC00,
87 0xF0AFFC00, 0xF1AFFC00, 0xEFBAFC00, 0x1FF5FC47, /* last */
88 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
89 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
90 /*
91 * Single Write. (Offset 18 in UPM RAM)
92 */
93 0x1F2DFC04, 0xEEABBC00, 0x01B27C04, 0x1FF5FC47, /* last */
94 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
95 /*
96 * Burst Write. (Offset 20 in UPM RAM)
97 */
98 0x1F0DFC04, 0xEEABBC00, 0x10A77C00, 0xF0AFFC00,
99 0xF0AFFC00, 0xE1BAFC04, 0x01FF5FC47, /* last */
100 _NOT_USED_,
101 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
102 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
103 /*
104 * Refresh (Offset 30 in UPM RAM)
105 */
106 0x1FFD7C84, 0xFFFFFC04, 0xFFFFFC04, 0xFFFFFC04,
107 0xFFFFFC84, 0xFFFFFC07, /* last */
108 _NOT_USED_, _NOT_USED_,
109 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
110 /*
111 * Exception. (Offset 3c in UPM RAM)
112 */
113 0x7FFFFC07, /* last */
114 0xFFFFFCFF, 0xFFFFFCFF, 0xFFFFFCFF,
115#endif
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200116#ifdef CONFIG_SYS_MEMORY_7E
wdenke2211742002-11-02 23:30:20 +0000117 /*
118 * Single Read. (Offset 0 in UPM RAM)
119 */
120 0x0E2DBC04, 0x11AF7C04, 0xEFBAFC00, 0x1FF5FC47, /* last */
121 _NOT_USED_,
122 /*
123 * SDRAM Initialization (offset 5 in UPM RAM)
124 *
wdenk8bde7f72003-06-27 21:31:46 +0000125 * This is no UPM entry point. The following definition uses
126 * the remaining space to establish an initialization
127 * sequence, which is executed by a RUN command.
wdenke2211742002-11-02 23:30:20 +0000128 *
129 */
130 0x1FF5FC34, 0xEFEABC34, 0x1FB57C35, /* last */
131 /*
132 * Burst Read. (Offset 8 in UPM RAM)
133 */
134 0x0E2DBC04, 0x10AF7C04, 0xF0AFFC00, 0xF0AFFC00,
135 0xF1AFFC00, 0xEFBAFC00, 0x1FF5FC47, /* last */
wdenk8bde7f72003-06-27 21:31:46 +0000136 _NOT_USED_,
wdenke2211742002-11-02 23:30:20 +0000137 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
138 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
139 /*
140 * Single Write. (Offset 18 in UPM RAM)
141 */
142 0x0E29BC04, 0x01B27C04, 0x1FF5FC47, /* last */
143 _NOT_USED_,
144 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
145 /*
146 * Burst Write. (Offset 20 in UPM RAM)
147 */
148 0x0E29BC04, 0x10A77C00, 0xF0AFFC00, 0xF0AFFC00,
149 0xE1BAFC04, 0x1FF5FC47, /* last */
wdenk8bde7f72003-06-27 21:31:46 +0000150 _NOT_USED_, _NOT_USED_,
wdenke2211742002-11-02 23:30:20 +0000151 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
152 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
153 /*
154 * Refresh (Offset 30 in UPM RAM)
155 */
156 0x1FFD7C84, 0xFFFFFC04, 0xFFFFFC04, 0xFFFFFC04,
157 0xFFFFFC84, 0xFFFFFC07, /* last */
158 _NOT_USED_, _NOT_USED_,
159 _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
160 /*
161 * Exception. (Offset 3c in UPM RAM)
162 */
163 0x7FFFFC07, /* last */
164 0xFFFFFCFF, 0xFFFFFCFF, 0xFFFFFCFF,
165#endif
166};
167
168/*
169 * Check Board Identity:
170 *
171 */
172
173/***********************************************************************
174F* Function: int checkboard (void) P*A*Z*
175 *
176P* Parameters: none
177P*
178P* Returnvalue: int - 0 is always returned
179 *
180Z* Intention: This function is the checkboard() method implementation
181Z* for the lwmon board. Only a standard message is printed.
182 *
183D* Design: wd@denx.de
184C* Coding: wd@denx.de
185V* Verification: dzu@denx.de
186 ***********************************************************************/
187int checkboard (void)
188{
Wolfgang Denkee073a52005-07-21 13:53:44 +0200189 puts ("Board: LICCON Konsole LCD3\n");
wdenke2211742002-11-02 23:30:20 +0000190 return (0);
191}
192
193/***********************************************************************
Becky Bruce9973e3c2008-06-09 16:03:40 -0500194F* Function: phys_size_t initdram (int board_type) P*A*Z*
wdenke2211742002-11-02 23:30:20 +0000195 *
196P* Parameters: int board_type
197P* - Usually type of the board - ignored here.
198P*
199P* Returnvalue: long int
200P* - Size of initialized memory
201 *
202Z* Intention: This function is the initdram() method implementation
203Z* for the lwmon board.
204Z* The memory controller is initialized to access the
205Z* DRAM.
206 *
207D* Design: wd@denx.de
208C* Coding: wd@denx.de
209V* Verification: dzu@denx.de
210 ***********************************************************************/
Becky Bruce9973e3c2008-06-09 16:03:40 -0500211phys_size_t initdram (int board_type)
wdenke2211742002-11-02 23:30:20 +0000212{
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200213 volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
wdenke2211742002-11-02 23:30:20 +0000214 volatile memctl8xx_t *memctl = &immr->im_memctl;
215 long int size_b0;
216 long int size8, size9;
217 int i;
218
219 /*
220 * Configure UPMA for SDRAM
221 */
222 upmconfig (UPMA, (uint *)sdram_table, sizeof(sdram_table)/sizeof(uint));
223
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200224 memctl->memc_mptpr = CONFIG_SYS_MPTPR;
wdenke2211742002-11-02 23:30:20 +0000225
226 /* burst length=4, burst type=sequential, CAS latency=2 */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200227 memctl->memc_mar = CONFIG_SYS_MAR;
wdenke2211742002-11-02 23:30:20 +0000228
229 /*
230 * Map controller bank 3 to the SDRAM bank at preliminary address.
231 */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200232 memctl->memc_or3 = CONFIG_SYS_OR3_PRELIM;
233 memctl->memc_br3 = CONFIG_SYS_BR3_PRELIM;
wdenke2211742002-11-02 23:30:20 +0000234
235 /* initialize memory address register */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200236 memctl->memc_mamr = CONFIG_SYS_MAMR_8COL; /* refresh not enabled yet */
wdenke2211742002-11-02 23:30:20 +0000237
238 /* mode initialization (offset 5) */
239 udelay (200); /* 0x80006105 */
240 memctl->memc_mcr = MCR_OP_RUN | MCR_MB_CS3 | MCR_MLCF (1) | MCR_MAD (0x05);
241
242 /* run 2 refresh sequence with 4-beat refresh burst (offset 0x30) */
243 udelay (1); /* 0x80006130 */
244 memctl->memc_mcr = MCR_OP_RUN | MCR_MB_CS3 | MCR_MLCF (1) | MCR_MAD (0x30);
245 udelay (1); /* 0x80006130 */
246 memctl->memc_mcr = MCR_OP_RUN | MCR_MB_CS3 | MCR_MLCF (1) | MCR_MAD (0x30);
247
248 udelay (1); /* 0x80006106 */
249 memctl->memc_mcr = MCR_OP_RUN | MCR_MB_CS3 | MCR_MLCF (1) | MCR_MAD (0x06);
250
wdenk2535d602003-07-17 23:16:40 +0000251 memctl->memc_mamr |= MAMR_PTAE; /* refresh enabled */
wdenke2211742002-11-02 23:30:20 +0000252
253 udelay (200);
254
255 /* Need at least 10 DRAM accesses to stabilize */
256 for (i = 0; i < 10; ++i) {
257 volatile unsigned long *addr =
258 (volatile unsigned long *) SDRAM_BASE3_PRELIM;
259 unsigned long val;
260
261 val = *(addr + i);
262 *(addr + i) = val;
263 }
264
265 /*
266 * Check Bank 0 Memory Size for re-configuration
267 *
268 * try 8 column mode
269 */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200270 size8 = dram_size (CONFIG_SYS_MAMR_8COL, (long *)SDRAM_BASE3_PRELIM, SDRAM_MAX_SIZE);
wdenke2211742002-11-02 23:30:20 +0000271
272 udelay (1000);
273
274 /*
275 * try 9 column mode
276 */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200277 size9 = dram_size (CONFIG_SYS_MAMR_9COL, (long *)SDRAM_BASE3_PRELIM, SDRAM_MAX_SIZE);
wdenke2211742002-11-02 23:30:20 +0000278
279 if (size8 < size9) { /* leave configuration at 9 columns */
280 size_b0 = size9;
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200281 memctl->memc_mamr = CONFIG_SYS_MAMR_9COL | MAMR_PTAE;
wdenke2211742002-11-02 23:30:20 +0000282 udelay (500);
283 } else { /* back to 8 columns */
284 size_b0 = size8;
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200285 memctl->memc_mamr = CONFIG_SYS_MAMR_8COL | MAMR_PTAE;
wdenke2211742002-11-02 23:30:20 +0000286 udelay (500);
287 }
288
289 /*
290 * Final mapping:
291 */
292
293 memctl->memc_or3 = ((-size_b0) & 0xFFFF0000) |
294 OR_CSNT_SAM | OR_G5LS | SDRAM_TIMING;
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200295 memctl->memc_br3 = (CONFIG_SYS_SDRAM_BASE & BR_BA_MSK) | BR_MS_UPMA | BR_V;
wdenke2211742002-11-02 23:30:20 +0000296 udelay (1000);
297
298 return (size_b0);
299}
300
301/***********************************************************************
302F* Function: static long int dram_size (long int mamr_value,
303F* long int *base,
304F* long int maxsize) P*A*Z*
305 *
306P* Parameters: long int mamr_value
307P* - Value for MAMR for the test
308P* long int *base
309P* - Base address for the test
310P* long int maxsize
311P* - Maximum size to test for
312P*
313P* Returnvalue: long int
314P* - Size of probed memory
315 *
316Z* Intention: Check memory range for valid RAM. A simple memory test
317Z* determines the actually available RAM size between
318Z* addresses `base' and `base + maxsize'. Some (not all)
319Z* hardware errors are detected:
320Z* - short between address lines
321Z* - short between data lines
322 *
323D* Design: wd@denx.de
324C* Coding: wd@denx.de
325V* Verification: dzu@denx.de
326 ***********************************************************************/
327static long int dram_size (long int mamr_value, long int *base, long int maxsize)
328{
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200329 volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
wdenke2211742002-11-02 23:30:20 +0000330 volatile memctl8xx_t *memctl = &immr->im_memctl;
wdenke2211742002-11-02 23:30:20 +0000331
332 memctl->memc_mamr = mamr_value;
333
wdenkc83bf6a2004-01-06 22:38:14 +0000334 return (get_ram_size(base, maxsize));
wdenke2211742002-11-02 23:30:20 +0000335}
336
337/* ------------------------------------------------------------------------- */
338
339#ifndef PB_ENET_TENA
340# define PB_ENET_TENA ((uint)0x00002000) /* PB 18 */
341#endif
342
343/***********************************************************************
wdenkc837dcb2004-01-20 23:12:12 +0000344F* Function: int board_early_init_f (void) P*A*Z*
wdenke2211742002-11-02 23:30:20 +0000345 *
346P* Parameters: none
347P*
348P* Returnvalue: int
349P* - 0 is always returned.
350 *
wdenkc837dcb2004-01-20 23:12:12 +0000351Z* Intention: This function is the board_early_init_f() method implementation
wdenke2211742002-11-02 23:30:20 +0000352Z* for the lwmon board.
353Z* Disable Ethernet TENA on Port B.
354 *
355D* Design: wd@denx.de
356C* Coding: wd@denx.de
357V* Verification: dzu@denx.de
358 ***********************************************************************/
wdenkc837dcb2004-01-20 23:12:12 +0000359int board_early_init_f (void)
wdenke2211742002-11-02 23:30:20 +0000360{
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200361 volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
wdenke2211742002-11-02 23:30:20 +0000362
363 /* Disable Ethernet TENA on Port B
364 * Necessary because of pull up in COM3 port.
365 *
366 * This is just a preliminary fix, intended to turn off TENA
367 * as soon as possible to avoid noise on the network. Once
Albert ARIBAUDfa82f872011-08-04 18:45:45 +0200368 * I2C is running we will make sure the interface is
wdenke2211742002-11-02 23:30:20 +0000369 * correctly initialized.
370 */
371 immr->im_cpm.cp_pbpar &= ~PB_ENET_TENA;
372 immr->im_cpm.cp_pbodr &= ~PB_ENET_TENA;
373 immr->im_cpm.cp_pbdat &= ~PB_ENET_TENA; /* set to 0 = disabled */
374 immr->im_cpm.cp_pbdir |= PB_ENET_TENA;
wdenk4532cb62003-04-27 22:52:51 +0000375
wdenke2211742002-11-02 23:30:20 +0000376 return (0);
377}
378
379/* ------------------------------------------------------------------------- */
380
381/***********************************************************************
382F* Function: void reset_phy (void) P*A*Z*
383 *
384P* Parameters: none
385P*
386P* Returnvalue: none
387 *
388Z* Intention: Reset the PHY. In the lwmon case we do this by the
389Z* signaling the PIC I/O expander.
390 *
391D* Design: wd@denx.de
392C* Coding: wd@denx.de
393V* Verification: dzu@denx.de
394 ***********************************************************************/
395void reset_phy (void)
396{
397 uchar c;
398
399#ifdef DEBUG
400 printf ("### Switch on Ethernet for SCC2 ###\n");
401#endif
402 c = pic_read (0x61);
403#ifdef DEBUG
404 printf ("Old PIC read: reg_61 = 0x%02x\n", c);
405#endif
406 c |= 0x40; /* disable COM3 */
407 c &= ~0x80; /* enable Ethernet */
408 pic_write (0x61, c);
409#ifdef DEBUG
410 c = pic_read (0x61);
411 printf ("New PIC read: reg_61 = 0x%02x\n", c);
412#endif
413 udelay (1000);
414}
415
416
417/*------------------------- Keyboard controller -----------------------*/
418/* command codes */
419#define KEYBD_CMD_READ_KEYS 0x01
420#define KEYBD_CMD_READ_VERSION 0x02
421#define KEYBD_CMD_READ_STATUS 0x03
422#define KEYBD_CMD_RESET_ERRORS 0x10
423
424/* status codes */
425#define KEYBD_STATUS_MASK 0x3F
426#define KEYBD_STATUS_H_RESET 0x20
427#define KEYBD_STATUS_BROWNOUT 0x10
428#define KEYBD_STATUS_WD_RESET 0x08
429#define KEYBD_STATUS_OVERLOAD 0x04
430#define KEYBD_STATUS_ILLEGAL_WR 0x02
431#define KEYBD_STATUS_ILLEGAL_RD 0x01
432
433/* Number of bytes returned from Keyboard Controller */
434#define KEYBD_VERSIONLEN 2 /* version information */
435#define KEYBD_DATALEN 9 /* normal key scan data */
436
437/* maximum number of "magic" key codes that can be assigned */
438
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200439static uchar kbd_addr = CONFIG_SYS_I2C_KEYBD_ADDR;
wdenke2211742002-11-02 23:30:20 +0000440
441static uchar *key_match (uchar *);
442
443#define KEYBD_SET_DEBUGMODE '#' /* Magic key to enable debug output */
444
445/***********************************************************************
wdenk4532cb62003-04-27 22:52:51 +0000446F* Function: int board_postclk_init (void) P*A*Z*
wdenke2211742002-11-02 23:30:20 +0000447 *
448P* Parameters: none
449P*
450P* Returnvalue: int
wdenk4532cb62003-04-27 22:52:51 +0000451P* - 0 is always returned.
wdenke2211742002-11-02 23:30:20 +0000452 *
wdenk4532cb62003-04-27 22:52:51 +0000453Z* Intention: This function is the board_postclk_init() method implementation
wdenke2211742002-11-02 23:30:20 +0000454Z* for the lwmon board.
wdenke2211742002-11-02 23:30:20 +0000455 *
wdenke2211742002-11-02 23:30:20 +0000456 ***********************************************************************/
wdenk4532cb62003-04-27 22:52:51 +0000457int board_postclk_init (void)
wdenke2211742002-11-02 23:30:20 +0000458{
wdenk4532cb62003-04-27 22:52:51 +0000459 kbd_init();
460
461#ifdef CONFIG_MODEM_SUPPORT
462 if (key_pressed()) {
463 disable_putc(); /* modem doesn't understand banner etc */
464 gd->do_mdm_init = 1;
465 }
466#endif
467
468 return (0);
469}
470
wdenk281e00a2004-08-01 22:48:16 +0000471struct serial_device * default_serial_console (void)
472{
wdenk281e00a2004-08-01 22:48:16 +0000473 return gd->do_mdm_init ? &serial_scc_device : &serial_smc_device;
474}
475
wdenk4532cb62003-04-27 22:52:51 +0000476static void kbd_init (void)
477{
wdenke2211742002-11-02 23:30:20 +0000478 uchar kbd_data[KEYBD_DATALEN];
479 uchar tmp_data[KEYBD_DATALEN];
wdenke2211742002-11-02 23:30:20 +0000480 uchar val, errcd;
wdenke2211742002-11-02 23:30:20 +0000481 int i;
482
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200483 i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
wdenk8bde7f72003-06-27 21:31:46 +0000484
Simon Glass225ca832012-12-13 20:49:04 +0000485 gd->arch.kbd_status = 0;
wdenke2211742002-11-02 23:30:20 +0000486
wdenkd1cbe852003-06-28 17:24:46 +0000487 /* Forced by PIC. Delays <= 175us loose */
488 udelay(1000);
489
wdenke2211742002-11-02 23:30:20 +0000490 /* Read initial keyboard error code */
491 val = KEYBD_CMD_READ_STATUS;
492 i2c_write (kbd_addr, 0, 0, &val, 1);
493 i2c_read (kbd_addr, 0, 0, &errcd, 1);
494 /* clear unused bits */
495 errcd &= KEYBD_STATUS_MASK;
496 /* clear "irrelevant" bits. Recommended by Martin Rajek, LWN */
497 errcd &= ~(KEYBD_STATUS_H_RESET|KEYBD_STATUS_BROWNOUT);
498 if (errcd) {
Simon Glass225ca832012-12-13 20:49:04 +0000499 gd->arch.kbd_status |= errcd << 8;
wdenke2211742002-11-02 23:30:20 +0000500 }
501 /* Reset error code and verify */
502 val = KEYBD_CMD_RESET_ERRORS;
503 i2c_write (kbd_addr, 0, 0, &val, 1);
504 udelay(1000); /* delay NEEDED by keyboard PIC !!! */
505
506 val = KEYBD_CMD_READ_STATUS;
507 i2c_write (kbd_addr, 0, 0, &val, 1);
508 i2c_read (kbd_addr, 0, 0, &val, 1);
509
510 val &= KEYBD_STATUS_MASK; /* clear unused bits */
511 if (val) { /* permanent error, report it */
Simon Glass225ca832012-12-13 20:49:04 +0000512 gd->arch.kbd_status |= val;
wdenk4532cb62003-04-27 22:52:51 +0000513 return;
wdenke2211742002-11-02 23:30:20 +0000514 }
515
516 /*
wdenke2211742002-11-02 23:30:20 +0000517 * Read current keyboard state.
518 *
wdenk8bde7f72003-06-27 21:31:46 +0000519 * After the error reset it may take some time before the
520 * keyboard PIC picks up a valid keyboard scan - the total
521 * scan time is approx. 1.6 ms (information by Martin Rajek,
522 * 28 Sep 2002). We read a couple of times for the keyboard
523 * to stabilize, using a big enough delay.
524 * 10 times should be enough. If the data is still changing,
525 * we use what we get :-(
wdenke2211742002-11-02 23:30:20 +0000526 */
527
528 memset (tmp_data, 0xFF, KEYBD_DATALEN); /* impossible value */
529 for (i=0; i<10; ++i) {
530 val = KEYBD_CMD_READ_KEYS;
531 i2c_write (kbd_addr, 0, 0, &val, 1);
532 i2c_read (kbd_addr, 0, 0, kbd_data, KEYBD_DATALEN);
533
534 if (memcmp(kbd_data, tmp_data, KEYBD_DATALEN) == 0) {
535 /* consistent state, done */
536 break;
537 }
538 /* remeber last state, delay, and retry */
539 memcpy (tmp_data, kbd_data, KEYBD_DATALEN);
540 udelay (5000);
541 }
wdenk4532cb62003-04-27 22:52:51 +0000542}
543
544/***********************************************************************
545F* Function: int misc_init_r (void) P*A*Z*
546 *
547P* Parameters: none
548P*
549P* Returnvalue: int
550P* - 0 is always returned, even in the case of a keyboard
551P* error.
552 *
553Z* Intention: This function is the misc_init_r() method implementation
554Z* for the lwmon board.
555Z* The keyboard controller is initialized and the result
556Z* of a read copied to the environment variable "keybd".
557Z* If KEYBD_SET_DEBUGMODE is defined, a check is made for
558Z* this key, and if found display to the LCD will be enabled.
559Z* The keys in "keybd" are checked against the magic
560Z* keycommands defined in the environment.
561Z* See also key_match().
562 *
563D* Design: wd@denx.de
564C* Coding: wd@denx.de
565V* Verification: dzu@denx.de
566 ***********************************************************************/
567int misc_init_r (void)
568{
wdenk4532cb62003-04-27 22:52:51 +0000569 uchar kbd_data[KEYBD_DATALEN];
Wolfgang Denk77ddac92005-10-13 16:45:02 +0200570 char keybd_env[2 * KEYBD_DATALEN + 1];
Simon Glass225ca832012-12-13 20:49:04 +0000571 uchar kbd_init_status = gd->arch.kbd_status >> 8;
572 uchar kbd_status = gd->arch.kbd_status;
wdenk4532cb62003-04-27 22:52:51 +0000573 uchar val;
Wolfgang Denk77ddac92005-10-13 16:45:02 +0200574 char *str;
wdenk4532cb62003-04-27 22:52:51 +0000575 int i;
576
577 if (kbd_init_status) {
578 printf ("KEYBD: Error %02X\n", kbd_init_status);
579 }
580 if (kbd_status) { /* permanent error, report it */
581 printf ("*** Keyboard error code %02X ***\n", kbd_status);
582 sprintf (keybd_env, "%02X", kbd_status);
583 setenv ("keybd", keybd_env);
584 return 0;
585 }
586
587 /*
588 * Now we know that we have a working keyboard, so disable
589 * all output to the LCD except when a key press is detected.
590 */
591
592 if ((console_assign (stdout, "serial") < 0) ||
593 (console_assign (stderr, "serial") < 0)) {
594 printf ("Can't assign serial port as output device\n");
595 }
596
597 /* Read Version */
598 val = KEYBD_CMD_READ_VERSION;
599 i2c_write (kbd_addr, 0, 0, &val, 1);
600 i2c_read (kbd_addr, 0, 0, kbd_data, KEYBD_VERSIONLEN);
601 printf ("KEYBD: Version %d.%d\n", kbd_data[0], kbd_data[1]);
602
603 /* Read current keyboard state */
604 val = KEYBD_CMD_READ_KEYS;
605 i2c_write (kbd_addr, 0, 0, &val, 1);
606 i2c_read (kbd_addr, 0, 0, kbd_data, KEYBD_DATALEN);
wdenke2211742002-11-02 23:30:20 +0000607
608 for (i = 0; i < KEYBD_DATALEN; ++i) {
609 sprintf (keybd_env + i + i, "%02X", kbd_data[i]);
610 }
611 setenv ("keybd", keybd_env);
612
Wolfgang Denk77ddac92005-10-13 16:45:02 +0200613 str = strdup ((char *)key_match (kbd_data)); /* decode keys */
wdenke2211742002-11-02 23:30:20 +0000614#ifdef KEYBD_SET_DEBUGMODE
615 if (kbd_data[0] == KEYBD_SET_DEBUGMODE) { /* set debug mode */
616 if ((console_assign (stdout, "lcd") < 0) ||
617 (console_assign (stderr, "lcd") < 0)) {
618 printf ("Can't assign LCD display as output device\n");
619 }
620 }
621#endif /* KEYBD_SET_DEBUGMODE */
622#ifdef CONFIG_PREBOOT /* automatically configure "preboot" command on key match */
623 setenv ("preboot", str); /* set or delete definition */
624#endif /* CONFIG_PREBOOT */
625 if (str != NULL) {
626 free (str);
627 }
628 return (0);
629}
630
631#ifdef CONFIG_PREBOOT
632
633static uchar kbd_magic_prefix[] = "key_magic";
634static uchar kbd_command_prefix[] = "key_cmd";
635
wdenk4532cb62003-04-27 22:52:51 +0000636static int compare_magic (uchar *kbd_data, uchar *str)
637{
638 uchar compare[KEYBD_DATALEN-1];
wdenkeedcd072004-09-08 22:03:11 +0000639 char *nxt;
wdenk4532cb62003-04-27 22:52:51 +0000640 int i;
641
642 /* Don't include modifier byte */
643 memcpy (compare, kbd_data+1, KEYBD_DATALEN-1);
644
Wolfgang Denk77ddac92005-10-13 16:45:02 +0200645 for (; str != NULL; str = (*nxt) ? (uchar *)(nxt+1) : (uchar *)nxt) {
wdenk4532cb62003-04-27 22:52:51 +0000646 uchar c;
647 int k;
648
Wolfgang Denk77ddac92005-10-13 16:45:02 +0200649 c = (uchar) simple_strtoul ((char *)str, (char **) (&nxt), 16);
wdenk4532cb62003-04-27 22:52:51 +0000650
wdenkeedcd072004-09-08 22:03:11 +0000651 if (str == (uchar *)nxt) { /* invalid character */
wdenk4532cb62003-04-27 22:52:51 +0000652 break;
653 }
654
655 /*
656 * Check if this key matches the input.
657 * Set matches to zero, so they match only once
658 * and we can find duplicates or extra keys
659 */
660 for (k = 0; k < sizeof(compare); ++k) {
661 if (compare[k] == '\0') /* only non-zero entries */
662 continue;
663 if (c == compare[k]) { /* found matching key */
664 compare[k] = '\0';
665 break;
666 }
667 }
668 if (k == sizeof(compare)) {
669 return -1; /* unmatched key */
670 }
671 }
672
673 /*
674 * A full match leaves no keys in the `compare' array,
675 */
676 for (i = 0; i < sizeof(compare); ++i) {
677 if (compare[i])
678 {
679 return -1;
680 }
681 }
682
683 return 0;
684}
685
wdenke2211742002-11-02 23:30:20 +0000686/***********************************************************************
687F* Function: static uchar *key_match (uchar *kbd_data) P*A*Z*
688 *
689P* Parameters: uchar *kbd_data
690P* - The keys to match against our magic definitions
691P*
692P* Returnvalue: uchar *
693P* - != NULL: Pointer to the corresponding command(s)
694P* NULL: No magic is about to happen
695 *
696Z* Intention: Check if pressed key(s) match magic sequence,
697Z* and return the command string associated with that key(s).
698Z*
699Z* If no key press was decoded, NULL is returned.
700Z*
701Z* Note: the first character of the argument will be
702Z* overwritten with the "magic charcter code" of the
703Z* decoded key(s), or '\0'.
704Z*
705Z* Note: the string points to static environment data
706Z* and must be saved before you call any function that
707Z* modifies the environment.
708 *
709D* Design: wd@denx.de
710C* Coding: wd@denx.de
711V* Verification: dzu@denx.de
712 ***********************************************************************/
713static uchar *key_match (uchar *kbd_data)
714{
Wolfgang Denk77ddac92005-10-13 16:45:02 +0200715 char magic[sizeof (kbd_magic_prefix) + 1];
wdenk4532cb62003-04-27 22:52:51 +0000716 uchar *suffix;
Wolfgang Denk77ddac92005-10-13 16:45:02 +0200717 char *kbd_magic_keys;
wdenke2211742002-11-02 23:30:20 +0000718
719 /*
720 * The following string defines the characters that can pe appended
721 * to "key_magic" to form the names of environment variables that
722 * hold "magic" key codes, i. e. such key codes that can cause
723 * pre-boot actions. If the string is empty (""), then only
724 * "key_magic" is checked (old behaviour); the string "125" causes
725 * checks for "key_magic1", "key_magic2" and "key_magic5", etc.
726 */
727 if ((kbd_magic_keys = getenv ("magic_keys")) == NULL)
728 kbd_magic_keys = "";
729
730 /* loop over all magic keys;
731 * use '\0' suffix in case of empty string
732 */
Wolfgang Denk77ddac92005-10-13 16:45:02 +0200733 for (suffix=(uchar *)kbd_magic_keys; *suffix || suffix==(uchar *)kbd_magic_keys; ++suffix) {
wdenke2211742002-11-02 23:30:20 +0000734 sprintf (magic, "%s%c", kbd_magic_prefix, *suffix);
735#if 0
736 printf ("### Check magic \"%s\"\n", magic);
737#endif
Wolfgang Denk77ddac92005-10-13 16:45:02 +0200738 if (compare_magic(kbd_data, (uchar *)getenv(magic)) == 0) {
739 char cmd_name[sizeof (kbd_command_prefix) + 1];
wdenke2211742002-11-02 23:30:20 +0000740 char *cmd;
741
742 sprintf (cmd_name, "%s%c", kbd_command_prefix, *suffix);
743
744 cmd = getenv (cmd_name);
745#if 0
746 printf ("### Set PREBOOT to $(%s): \"%s\"\n",
747 cmd_name, cmd ? cmd : "<<NULL>>");
748#endif
749 *kbd_data = *suffix;
Wolfgang Denk77ddac92005-10-13 16:45:02 +0200750 return ((uchar *)cmd);
wdenke2211742002-11-02 23:30:20 +0000751 }
752 }
753#if 0
754 printf ("### Delete PREBOOT\n");
755#endif
756 *kbd_data = '\0';
757 return (NULL);
758}
759#endif /* CONFIG_PREBOOT */
760
Haavard Skinnemoen6b59e032008-09-01 16:21:22 +0200761#ifdef CONFIG_LCD_INFO
762#include <lcd.h>
763#include <version.h>
Peter Tyser561858e2008-11-03 09:30:59 -0600764#include <timestamp.h>
Haavard Skinnemoen6b59e032008-09-01 16:21:22 +0200765
766void lcd_show_board_info(void)
767{
768 char temp[32];
769
Peter Tyser561858e2008-11-03 09:30:59 -0600770 lcd_printf ("%s (%s - %s)\n", U_BOOT_VERSION, U_BOOT_DATE, U_BOOT_TIME);
Haavard Skinnemoen6b59e032008-09-01 16:21:22 +0200771 lcd_printf ("(C) 2008 DENX Software Engineering GmbH\n");
772 lcd_printf (" Wolfgang DENK, wd@denx.de\n");
773#ifdef CONFIG_LCD_INFO_BELOW_LOGO
774 lcd_printf ("MPC823 CPU at %s MHz\n",
775 strmhz(temp, gd->cpu_clk));
Haavard Skinnemoen6b59e032008-09-01 16:21:22 +0200776 lcd_printf (" %ld MB RAM, %ld MB Flash\n",
777 gd->ram_size >> 20,
778 gd->bd->bi_flashsize >> 20 );
779#else
780 /* leave one blank line */
781 lcd_printf ("\nMPC823 CPU at %s MHz, %ld MB RAM, %ld MB Flash\n",
782 strmhz(temp, gd->cpu_clk),
783 gd->ram_size >> 20,
784 gd->bd->bi_flashsize >> 20 );
785#endif /* CONFIG_LCD_INFO_BELOW_LOGO */
786}
787#endif /* CONFIG_LCD_INFO */
788
wdenke2211742002-11-02 23:30:20 +0000789/*---------------Board Special Commands: PIC read/write ---------------*/
790
Jon Loeligerc508a4c2007-07-09 18:31:28 -0500791#if defined(CONFIG_CMD_BSP)
wdenke2211742002-11-02 23:30:20 +0000792/***********************************************************************
793F* Function: int do_pic (cmd_tbl_t *cmdtp, int flag,
Wolfgang Denk54841ab2010-06-28 22:00:46 +0200794F* int argc, char * const argv[]) P*A*Z*
wdenke2211742002-11-02 23:30:20 +0000795 *
796P* Parameters: cmd_tbl_t *cmdtp
797P* - Pointer to our command table entry
798P* int flag
799P* - If the CMD_FLAG_REPEAT bit is set, then this call is
800P* a repetition
801P* int argc
802P* - Argument count
Wolfgang Denk54841ab2010-06-28 22:00:46 +0200803P* char * const argv[]
wdenke2211742002-11-02 23:30:20 +0000804P* - Array of the actual arguments
805P*
806P* Returnvalue: int
807P* - 0 The command was handled successfully
808P* 1 An error occurred
809 *
810Z* Intention: Implement the "pic [read|write]" commands.
811Z* The read subcommand takes one argument, the register,
812Z* whereas the write command takes two, the register and
813Z* the new value.
814 *
815D* Design: wd@denx.de
816C* Coding: wd@denx.de
817V* Verification: dzu@denx.de
818 ***********************************************************************/
Wolfgang Denk54841ab2010-06-28 22:00:46 +0200819int do_pic (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
wdenke2211742002-11-02 23:30:20 +0000820{
821 uchar reg, val;
822
823 switch (argc) {
824 case 3: /* PIC read reg */
825 if (strcmp (argv[1], "read") != 0)
826 break;
827
828 reg = simple_strtoul (argv[2], NULL, 16);
829
830 printf ("PIC read: reg %02x: %02x\n\n", reg, pic_read (reg));
831
832 return 0;
833 case 4: /* PIC write reg val */
834 if (strcmp (argv[1], "write") != 0)
835 break;
836
837 reg = simple_strtoul (argv[2], NULL, 16);
838 val = simple_strtoul (argv[3], NULL, 16);
839
840 printf ("PIC write: reg %02x val 0x%02x: %02x => ",
841 reg, val, pic_read (reg));
842 pic_write (reg, val);
843 printf ("%02x\n\n", pic_read (reg));
844 return 0;
845 default:
846 break;
847 }
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200848 return cmd_usage(cmdtp);
wdenke2211742002-11-02 23:30:20 +0000849}
wdenk0d498392003-07-01 21:06:45 +0000850U_BOOT_CMD(
851 pic, 4, 1, do_pic,
Peter Tyser2fb26042009-01-27 18:03:12 -0600852 "read and write PIC registers",
wdenk8bde7f72003-06-27 21:31:46 +0000853 "read reg - read PIC register `reg'\n"
Wolfgang Denka89c33d2009-05-24 17:06:54 +0200854 "pic write reg val - write value `val' to PIC register `reg'"
wdenk8bde7f72003-06-27 21:31:46 +0000855);
wdenke2211742002-11-02 23:30:20 +0000856
857/***********************************************************************
858F* Function: int do_kbd (cmd_tbl_t *cmdtp, int flag,
Wolfgang Denk54841ab2010-06-28 22:00:46 +0200859F* int argc, char * const argv[]) P*A*Z*
wdenke2211742002-11-02 23:30:20 +0000860 *
861P* Parameters: cmd_tbl_t *cmdtp
862P* - Pointer to our command table entry
863P* int flag
864P* - If the CMD_FLAG_REPEAT bit is set, then this call is
865P* a repetition
866P* int argc
867P* - Argument count
Wolfgang Denk54841ab2010-06-28 22:00:46 +0200868P* char * const argv[]
wdenke2211742002-11-02 23:30:20 +0000869P* - Array of the actual arguments
870P*
871P* Returnvalue: int
872P* - 0 is always returned.
873 *
874Z* Intention: Implement the "kbd" command.
875Z* The keyboard status is read. The result is printed on
876Z* the console and written into the "keybd" environment
877Z* variable.
878 *
879D* Design: wd@denx.de
880C* Coding: wd@denx.de
881V* Verification: dzu@denx.de
882 ***********************************************************************/
Wolfgang Denk54841ab2010-06-28 22:00:46 +0200883int do_kbd (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
wdenke2211742002-11-02 23:30:20 +0000884{
885 uchar kbd_data[KEYBD_DATALEN];
Wolfgang Denk77ddac92005-10-13 16:45:02 +0200886 char keybd_env[2 * KEYBD_DATALEN + 1];
wdenke2211742002-11-02 23:30:20 +0000887 uchar val;
888 int i;
889
wdenk4532cb62003-04-27 22:52:51 +0000890#if 0 /* Done in kbd_init */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200891 i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
wdenk4532cb62003-04-27 22:52:51 +0000892#endif
wdenke2211742002-11-02 23:30:20 +0000893
894 /* Read keys */
895 val = KEYBD_CMD_READ_KEYS;
896 i2c_write (kbd_addr, 0, 0, &val, 1);
897 i2c_read (kbd_addr, 0, 0, kbd_data, KEYBD_DATALEN);
898
899 puts ("Keys:");
900 for (i = 0; i < KEYBD_DATALEN; ++i) {
901 sprintf (keybd_env + i + i, "%02X", kbd_data[i]);
902 printf (" %02x", kbd_data[i]);
903 }
904 putc ('\n');
905 setenv ("keybd", keybd_env);
906 return 0;
907}
908
wdenk0d498392003-07-01 21:06:45 +0000909U_BOOT_CMD(
910 kbd, 1, 1, do_kbd,
Peter Tyser2fb26042009-01-27 18:03:12 -0600911 "read keyboard status",
Wolfgang Denka89c33d2009-05-24 17:06:54 +0200912 ""
wdenk8bde7f72003-06-27 21:31:46 +0000913);
914
wdenke2211742002-11-02 23:30:20 +0000915/* Read and set LSB switch */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200916#define CONFIG_SYS_PC_TXD1_ENA 0x0008 /* PC.12 */
wdenke2211742002-11-02 23:30:20 +0000917
918/***********************************************************************
919F* Function: int do_lsb (cmd_tbl_t *cmdtp, int flag,
Wolfgang Denk54841ab2010-06-28 22:00:46 +0200920F* int argc, char * const argv[]) P*A*Z*
wdenke2211742002-11-02 23:30:20 +0000921 *
922P* Parameters: cmd_tbl_t *cmdtp
923P* - Pointer to our command table entry
924P* int flag
925P* - If the CMD_FLAG_REPEAT bit is set, then this call is
926P* a repetition
927P* int argc
928P* - Argument count
Wolfgang Denk54841ab2010-06-28 22:00:46 +0200929P* char * const argv[]
wdenke2211742002-11-02 23:30:20 +0000930P* - Array of the actual arguments
931P*
932P* Returnvalue: int
933P* - 0 The command was handled successfully
934P* 1 An error occurred
935 *
936Z* Intention: Implement the "lsb [on|off]" commands.
937Z* The lsb is switched according to the first parameter by
938Z* by signaling the PIC I/O expander.
939Z* Called with no arguments, the current setting is
940Z* printed.
941 *
942D* Design: wd@denx.de
943C* Coding: wd@denx.de
944V* Verification: dzu@denx.de
945 ***********************************************************************/
Wolfgang Denk54841ab2010-06-28 22:00:46 +0200946int do_lsb (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
wdenke2211742002-11-02 23:30:20 +0000947{
948 uchar val;
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200949 immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
wdenke2211742002-11-02 23:30:20 +0000950
951 switch (argc) {
952 case 1: /* lsb - print setting */
953 val = pic_read (0x60);
954 printf ("LSB is o%s\n", (val & 0x20) ? "n" : "ff");
955 return 0;
956 case 2: /* lsb on or lsb off - set switch */
957 val = pic_read (0x60);
958
959 if (strcmp (argv[1], "on") == 0) {
960 val |= 0x20;
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200961 immr->im_ioport.iop_pcpar &= ~(CONFIG_SYS_PC_TXD1_ENA);
962 immr->im_ioport.iop_pcdat |= CONFIG_SYS_PC_TXD1_ENA;
963 immr->im_ioport.iop_pcdir |= CONFIG_SYS_PC_TXD1_ENA;
wdenke2211742002-11-02 23:30:20 +0000964 } else if (strcmp (argv[1], "off") == 0) {
965 val &= ~0x20;
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200966 immr->im_ioport.iop_pcpar &= ~(CONFIG_SYS_PC_TXD1_ENA);
967 immr->im_ioport.iop_pcdat &= ~(CONFIG_SYS_PC_TXD1_ENA);
968 immr->im_ioport.iop_pcdir |= CONFIG_SYS_PC_TXD1_ENA;
wdenke2211742002-11-02 23:30:20 +0000969 } else {
970 break;
971 }
972 pic_write (0x60, val);
973 return 0;
974 default:
975 break;
976 }
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200977 return cmd_usage(cmdtp);
wdenke2211742002-11-02 23:30:20 +0000978}
979
wdenk0d498392003-07-01 21:06:45 +0000980U_BOOT_CMD(
981 lsb, 2, 1, do_lsb,
Peter Tyser2fb26042009-01-27 18:03:12 -0600982 "check and set LSB switch",
wdenk8bde7f72003-06-27 21:31:46 +0000983 "on - switch LSB on\n"
984 "lsb off - switch LSB off\n"
Wolfgang Denka89c33d2009-05-24 17:06:54 +0200985 "lsb - print current setting"
wdenk8bde7f72003-06-27 21:31:46 +0000986);
987
Jon Loeligerd39b5742007-07-10 10:48:22 -0500988#endif
wdenke2211742002-11-02 23:30:20 +0000989
990/*----------------------------- Utilities -----------------------------*/
991/***********************************************************************
992F* Function: uchar pic_read (uchar reg) P*A*Z*
993 *
994P* Parameters: uchar reg
995P* - Register to read
996P*
997P* Returnvalue: uchar
998P* - Value read from register
999 *
1000Z* Intention: Read a register from the PIC I/O expander.
1001 *
1002D* Design: wd@denx.de
1003C* Coding: wd@denx.de
1004V* Verification: dzu@denx.de
1005 ***********************************************************************/
1006uchar pic_read (uchar reg)
1007{
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +02001008 return (i2c_reg_read (CONFIG_SYS_I2C_PICIO_ADDR, reg));
wdenke2211742002-11-02 23:30:20 +00001009}
1010
1011/***********************************************************************
1012F* Function: void pic_write (uchar reg, uchar val) P*A*Z*
1013 *
1014P* Parameters: uchar reg
1015P* - Register to read
1016P* uchar val
1017P* - Value to write
1018P*
1019P* Returnvalue: none
1020 *
1021Z* Intention: Write to a register on the PIC I/O expander.
1022 *
1023D* Design: wd@denx.de
1024C* Coding: wd@denx.de
1025V* Verification: dzu@denx.de
1026 ***********************************************************************/
1027void pic_write (uchar reg, uchar val)
1028{
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +02001029 i2c_reg_write (CONFIG_SYS_I2C_PICIO_ADDR, reg, val);
wdenke2211742002-11-02 23:30:20 +00001030}
1031
1032/*---------------------- Board Control Functions ----------------------*/
1033/***********************************************************************
1034F* Function: void board_poweroff (void) P*A*Z*
1035 *
1036P* Parameters: none
1037P*
1038P* Returnvalue: none
1039 *
1040Z* Intention: Turn off the battery power and loop endless, so this
1041Z* should better be the last function you call...
1042 *
1043D* Design: wd@denx.de
1044C* Coding: wd@denx.de
1045V* Verification: dzu@denx.de
1046 ***********************************************************************/
1047void board_poweroff (void)
1048{
1049 /* Turn battery off */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +02001050 ((volatile immap_t *)CONFIG_SYS_IMMR)->im_ioport.iop_pcdat &= ~(1 << (31 - 13));
wdenke2211742002-11-02 23:30:20 +00001051
1052 while (1);
1053}
wdenk4532cb62003-04-27 22:52:51 +00001054
1055#ifdef CONFIG_MODEM_SUPPORT
1056static int key_pressed(void)
1057{
1058 uchar kbd_data[KEYBD_DATALEN];
1059 uchar val;
1060
1061 /* Read keys */
1062 val = KEYBD_CMD_READ_KEYS;
1063 i2c_write (kbd_addr, 0, 0, &val, 1);
1064 i2c_read (kbd_addr, 0, 0, kbd_data, KEYBD_DATALEN);
1065
Wolfgang Denk77ddac92005-10-13 16:45:02 +02001066 return (compare_magic(kbd_data, (uchar *)CONFIG_MODEM_KEY_MAGIC) == 0);
wdenk4532cb62003-04-27 22:52:51 +00001067}
1068#endif /* CONFIG_MODEM_SUPPORT */
wdenk8564acf2003-07-14 22:13:32 +00001069
1070#ifdef CONFIG_POST
wdenk945af8d2003-07-16 21:53:01 +00001071/*
wdenk8564acf2003-07-14 22:13:32 +00001072 * Returns 1 if keys pressed to start the power-on long-running tests
1073 * Called from board_init_f().
1074 */
wdenk27b207f2003-07-24 23:38:38 +00001075int post_hotkeys_pressed(void)
wdenk8564acf2003-07-14 22:13:32 +00001076{
1077 uchar kbd_data[KEYBD_DATALEN];
1078 uchar val;
1079
1080 /* Read keys */
1081 val = KEYBD_CMD_READ_KEYS;
1082 i2c_write (kbd_addr, 0, 0, &val, 1);
1083 i2c_read (kbd_addr, 0, 0, kbd_data, KEYBD_DATALEN);
1084
Wolfgang Denk77ddac92005-10-13 16:45:02 +02001085 return (compare_magic(kbd_data, (uchar *)CONFIG_POST_KEY_MAGIC) == 0);
wdenk8564acf2003-07-14 22:13:32 +00001086}
1087#endif