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wdenk43d96162003-03-06 00:02:04 +00001/*
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>
wdenk47cd00f2003-03-06 13:39:27 +000028#include <asm/mach-types.h>
wdenk43d96162003-03-06 00:02:04 +000029
Wolfgang Denkd87080b2006-03-31 18:32:53 +020030DECLARE_GLOBAL_DATA_PTR;
31
wdenk43d96162003-03-06 00:02:04 +000032#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
wdenk47cd00f2003-03-06 13:39:27 +000038/**
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.
wdenk43d96162003-03-06 00:02:04 +000043 */
wdenkdc7c9a12003-03-26 06:55:25 +000044int i2c_init_board(void)
wdenk47cd00f2003-03-06 13:39:27 +000045{
wdenkdc7c9a12003-03-26 06:55:25 +000046 int i, icr;
wdenk47cd00f2003-03-06 13:39:27 +000047
wdenkdc7c9a12003-03-26 06:55:25 +000048 /* disable I2C controller first, otherwhise it thinks we want to */
49 /* talk to the slave port... */
50 icr = ICR; ICR &= ~(ICR_SCLE | ICR_IUE);
wdenk8bde7f72003-06-27 21:31:46 +000051
wdenkdc7c9a12003-03-26 06:55:25 +000052 /* set gpio pin low _before_ we change direction to output */
wdenk3e386912003-04-05 00:53:31 +000053 GPCR(70) = GPIO_bit(70);
wdenk8bde7f72003-06-27 21:31:46 +000054
wdenkdc7c9a12003-03-26 06:55:25 +000055 /* now toggle between output=low and high-impedance */
56 for (i = 0; i < 20; i++) {
57 GPDR(70) |= GPIO_bit(70); /* output */
wdenk47cd00f2003-03-06 13:39:27 +000058 udelay(10);
wdenkdc7c9a12003-03-26 06:55:25 +000059 GPDR(70) &= ~GPIO_bit(70); /* input */
wdenk47cd00f2003-03-06 13:39:27 +000060 udelay(10);
61 }
wdenkdc7c9a12003-03-26 06:55:25 +000062
63 ICR = icr;
64
65 return 0;
wdenk47cd00f2003-03-06 13:39:27 +000066}
67
68
69/**
70 * misc_init_r: - misc initialisation routines
71 */
72
73int misc_init_r(void)
74{
Jean-Christophe PLAGNIOL-VILLARD96455bf2007-10-19 00:07:39 +020075 char *str;
wdenk47cd00f2003-03-06 13:39:27 +000076
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}
wdenk43d96162003-03-06 00:02:04 +000090
91
92/**
93 * board_init: - setup some data structures
94 *
95 * @return: 0 in case of success
96 */
97
98int board_init (void)
99{
wdenk43d96162003-03-06 00:02:04 +0000100 /* memory and cpu-speed are setup before relocation */
101 /* so we do _nothing_ here */
102
wdenk47cd00f2003-03-06 13:39:27 +0000103 gd->bd->bi_arch_number = MACH_TYPE_INNOKOM;
wdenk43d96162003-03-06 00:02:04 +0000104 gd->bd->bi_boot_params = 0xa0000100;
wdenkdc7c9a12003-03-26 06:55:25 +0000105 gd->bd->bi_baudrate = CONFIG_BAUDRATE;
106
wdenk43d96162003-03-06 00:02:04 +0000107 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{
wdenk43d96162003-03-06 00:02:04 +0000119 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) {
wdenk8bde7f72003-06-27 21:31:46 +0000145 GPCR0 |= CSB226_USER_LED1;
146 } else if (state==0) {
147 GPSR0 |= CSB226_USER_LED1;
148 }
149 break;
wdenk43d96162003-03-06 00:02:04 +0000150
151 case 2: if (state==1) {
wdenk8bde7f72003-06-27 21:31:46 +0000152 GPCR0 |= CSB226_USER_LED2;
153 } else if (state==0) {
154 GPSR0 |= CSB226_USER_LED2;
155 }
156 break;
wdenk43d96162003-03-06 00:02:04 +0000157*/
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}