source: SVN/rincon/u-boot/board/innokom/innokom.c @ 55

Last change on this file since 55 was 55, checked in by Tim Harvey, 22 months ago

rincon: added latest u-boot source

restored form server backup

Signed-off-by: Tim Harvey <tharvey@…>

File size: 4.1 KB
Line 
1/*
2 * (C) Copyright 2002
3 * Robert Schwebel, Pengutronix, r.schwebel@pengutronix.de
4 * Kyle Harris, Nexus Technologies, Inc., kharris@nexus-tech.net
5 * Marius Groeger, Sysgo Real-Time Solutions GmbH, mgroeger@sysgo.de
6 *
7 * See file CREDITS for list of people who contributed to this
8 * project.
9 *
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License as
12 * published by the Free Software Foundation; either version 2 of
13 * the License, or (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
23 * MA 02111-1307 USA
24 */
25
26#include <common.h>
27#include <asm/arch/pxa-regs.h>
28#include <asm/mach-types.h>
29
30DECLARE_GLOBAL_DATA_PTR;
31
32#ifdef CONFIG_SHOW_BOOT_PROGRESS
33# define SHOW_BOOT_PROGRESS(arg)        show_boot_progress(arg)
34#else
35# define SHOW_BOOT_PROGRESS(arg)
36#endif
37
38/**
39 * i2c_init_board - reset i2c bus. When the board is powercycled during a
40 * bus transfer it might hang; for details see doc/I2C_Edge_Conditions.
41 * The Innokom board has GPIO70 connected to SCLK which can be toggled
42 * until all chips think that their current cycles are finished.
43 */
44int i2c_init_board(void)
45{
46        int i, icr;
47
48        /* disable I2C controller first, otherwhise it thinks we want to    */
49        /* talk to the slave port...                                        */
50        icr = ICR; ICR &= ~(ICR_SCLE | ICR_IUE);
51
52        /* set gpio pin low _before_ we change direction to output          */
53        GPCR(70) = GPIO_bit(70);
54
55        /* now toggle between output=low and high-impedance                 */
56        for (i = 0; i < 20; i++) {
57                GPDR(70) |= GPIO_bit(70);  /* output */
58                udelay(10);
59                GPDR(70) &= ~GPIO_bit(70); /* input  */
60                udelay(10);
61        }
62
63        ICR = icr;
64
65        return 0;
66}
67
68
69/**
70 * misc_init_r: - misc initialisation routines
71 */
72
73int misc_init_r(void)
74{
75        char *str;
76
77        /* determine if the software update key is pressed during startup   */
78        if (GPLR0 & 0x00000800) {
79                printf("using bootcmd_normal (sw-update button not pressed)\n");
80                str = getenv("bootcmd_normal");
81        } else {
82                printf("using bootcmd_update (sw-update button pressed)\n");
83                str = getenv("bootcmd_update");
84        }
85
86        setenv("bootcmd",str);
87
88        return 0;
89}
90
91
92/**
93 * board_init: - setup some data structures
94 *
95 * @return: 0 in case of success
96 */
97
98int board_init (void)
99{
100        /* memory and cpu-speed are setup before relocation */
101        /* so we do _nothing_ here */
102
103        gd->bd->bi_arch_number = MACH_TYPE_INNOKOM;
104        gd->bd->bi_boot_params = 0xa0000100;
105        gd->bd->bi_baudrate = CONFIG_BAUDRATE;
106
107        return 0;
108}
109
110
111/**
112 * dram_init: - setup dynamic RAM
113 *
114 * @return: 0 in case of success
115 */
116
117int dram_init (void)
118{
119        gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
120        gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
121
122        return 0;
123}
124
125
126/**
127 * innokom_set_led: - switch LEDs on or off
128 *
129 * @param led:   LED to switch (0,1,2)
130 * @param state: switch on (1) or off (0)
131 */
132
133void innokom_set_led(int led, int state)
134{
135        switch(led) {
136/*
137                case 0: if (state==1) {
138                                GPCR0 |= CSB226_USER_LED0;
139                        } else if (state==0) {
140                                GPSR0 |= CSB226_USER_LED0;
141                        }
142                        break;
143
144                case 1: if (state==1) {
145                                GPCR0 |= CSB226_USER_LED1;
146                        } else if (state==0) {
147                                GPSR0 |= CSB226_USER_LED1;
148                        }
149                        break;
150
151                case 2: if (state==1) {
152                                GPCR0 |= CSB226_USER_LED2;
153                        } else if (state==0) {
154                                GPSR0 |= CSB226_USER_LED2;
155                        }
156                        break;
157*/
158        }
159
160        return;
161}
162
163
164/**
165 * show_boot_progress: - indicate state of the boot process
166 *
167 * @param status: Status number - see README for details.
168 *
169 * The CSB226 does only have 3 LEDs, so we switch them on at the most
170 * important states (1, 5, 15).
171 */
172
173void show_boot_progress (int status)
174{
175        switch(status) {
176/*
177                case  1: csb226_set_led(0,1); break;
178                case  5: csb226_set_led(1,1); break;
179                case 15: csb226_set_led(2,1); break;
180*/
181        }
182
183        return;
184}
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