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Dirk Behmef904cdb2009-01-27 18:19:12 +01001/*
2 * (C) Copyright 2004-2008
3 * Texas Instruments, <www.ti.com>
4 *
5 * Author :
6 * Sunil Kumar <sunilsaini05@gmail.com>
7 * Shashi Ranjan <shashiranjanmca05@gmail.com>
8 *
9 * Derived from Beagle Board and 3430 SDP code by
10 * Richard Woodruff <r-woodruff2@ti.com>
11 * Syed Mohammed Khasim <khasim@ti.com>
12 *
13 *
14 * See file CREDITS for list of people who contributed to this
15 * project.
16 *
17 * This program is free software; you can redistribute it and/or
18 * modify it under the terms of the GNU General Public License as
19 * published by the Free Software Foundation; either version 2 of
20 * the License, or (at your option) any later version.
21 *
22 * This program is distributed in the hope that it will be useful,
23 * but WITHOUT ANY WARRANTY; without even the implied warranty of
24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25 * GNU General Public License for more details.
26 *
27 * You should have received a copy of the GNU General Public License
28 * along with this program; if not, write to the Free Software
29 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
30 * MA 02111-1307 USA
31 */
32#include <common.h>
Tom Rix2c155132009-06-28 12:52:30 -050033#include <twl4030.h>
Dirk Behmef904cdb2009-01-27 18:19:12 +010034#include <asm/io.h>
35#include <asm/arch/mux.h>
36#include <asm/arch/sys_proto.h>
Tom Rix718763c2009-06-03 01:53:57 -050037#include <asm/arch/gpio.h>
Dirk Behmef904cdb2009-01-27 18:19:12 +010038#include <asm/mach-types.h>
39#include "beagle.h"
40
Dirk Behmef956fd02009-02-12 18:55:41 +010041static int beagle_revision_c;
42
Tom Rix58911512009-04-01 22:02:20 -050043/*
Dirk Behmef904cdb2009-01-27 18:19:12 +010044 * Routine: board_init
45 * Description: Early hardware init.
Tom Rix58911512009-04-01 22:02:20 -050046 */
Dirk Behmef904cdb2009-01-27 18:19:12 +010047int board_init(void)
48{
49 DECLARE_GLOBAL_DATA_PTR;
50
51 gpmc_init(); /* in SRAM or SDRAM, finish GPMC */
52 /* board id for Linux */
53 gd->bd->bi_arch_number = MACH_TYPE_OMAP3_BEAGLE;
54 /* boot param addr */
55 gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);
56
57 return 0;
58}
59
Tom Rix58911512009-04-01 22:02:20 -050060/*
Dirk Behmef956fd02009-02-12 18:55:41 +010061 * Routine: beagle_get_revision
Tom Rix718763c2009-06-03 01:53:57 -050062 * Description: Return the revision of the BeagleBoard this code is running on.
Dirk Behmef956fd02009-02-12 18:55:41 +010063 * If it is a revision Ax/Bx board, this function returns 0,
64 * on a revision C board you will get a 1.
Tom Rix58911512009-04-01 22:02:20 -050065 */
Dirk Behmef956fd02009-02-12 18:55:41 +010066int beagle_get_revision(void)
67{
68 return beagle_revision_c;
69}
70
Tom Rix58911512009-04-01 22:02:20 -050071/*
Dirk Behmef956fd02009-02-12 18:55:41 +010072 * Routine: beagle_identify
73 * Description: Detect if we are running on a Beagle revision Ax/Bx or
74 * Cx. This can be done by GPIO_171. If this is low, we are
75 * running on a revision C board.
Tom Rix58911512009-04-01 22:02:20 -050076 */
Dirk Behmef956fd02009-02-12 18:55:41 +010077void beagle_identify(void)
78{
Tom Rix718763c2009-06-03 01:53:57 -050079 beagle_revision_c = 0;
80 if (!omap_request_gpio(171)) {
81 unsigned int val;
Dirk Behmef956fd02009-02-12 18:55:41 +010082
Tom Rix718763c2009-06-03 01:53:57 -050083 omap_set_gpio_direction(171, 1);
84 val = omap_get_gpio_datain(171);
85 omap_free_gpio(171);
Dirk Behmef956fd02009-02-12 18:55:41 +010086
Tom Rix718763c2009-06-03 01:53:57 -050087 if (val)
88 beagle_revision_c = 0;
89 else
90 beagle_revision_c = 1;
91 }
Dirk Behmef956fd02009-02-12 18:55:41 +010092
93 printf("Board revision ");
Tom Rix718763c2009-06-03 01:53:57 -050094 if (beagle_revision_c)
Dirk Behmef956fd02009-02-12 18:55:41 +010095 printf("C\n");
Tom Rix718763c2009-06-03 01:53:57 -050096 else
97 printf("Ax/Bx\n");
Dirk Behmef956fd02009-02-12 18:55:41 +010098}
99
Tom Rix58911512009-04-01 22:02:20 -0500100/*
Dirk Behmef904cdb2009-01-27 18:19:12 +0100101 * Routine: misc_init_r
102 * Description: Configure board specific parts
Tom Rix58911512009-04-01 22:02:20 -0500103 */
Dirk Behmef904cdb2009-01-27 18:19:12 +0100104int misc_init_r(void)
105{
Dirk Behme97a099e2009-08-08 09:30:21 +0200106 struct gpio *gpio5_base = (struct gpio *)OMAP34XX_GPIO5_BASE;
107 struct gpio *gpio6_base = (struct gpio *)OMAP34XX_GPIO6_BASE;
Dirk Behmef904cdb2009-01-27 18:19:12 +0100108
Tom Rix2c155132009-06-28 12:52:30 -0500109 twl4030_power_init();
Grazvydas Ignotasead39d72009-12-10 17:10:21 +0200110 twl4030_led_init(TWL4030_LED_LEDEN_LEDAON | TWL4030_LED_LEDEN_LEDBON);
Dirk Behmef904cdb2009-01-27 18:19:12 +0100111
112 /* Configure GPIOs to output */
113 writel(~(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1), &gpio6_base->oe);
114 writel(~(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 |
115 GPIO15 | GPIO14 | GPIO13 | GPIO12), &gpio5_base->oe);
116
117 /* Set GPIOs */
118 writel(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1,
119 &gpio6_base->setdataout);
120 writel(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 |
121 GPIO15 | GPIO14 | GPIO13 | GPIO12, &gpio5_base->setdataout);
122
Dirk Behmef956fd02009-02-12 18:55:41 +0100123 beagle_identify();
124
Dirk Behmee6a6a702009-03-12 19:30:50 +0100125 dieid_num_r();
126
Dirk Behmef904cdb2009-01-27 18:19:12 +0100127 return 0;
128}
129
Tom Rix58911512009-04-01 22:02:20 -0500130/*
Dirk Behmef904cdb2009-01-27 18:19:12 +0100131 * Routine: set_muxconf_regs
132 * Description: Setting up the configuration Mux registers specific to the
133 * hardware. Many pins need to be moved from protect to primary
134 * mode.
Tom Rix58911512009-04-01 22:02:20 -0500135 */
Dirk Behmef904cdb2009-01-27 18:19:12 +0100136void set_muxconf_regs(void)
137{
138 MUX_BEAGLE();
Dirk Behmeac914002009-04-17 14:27:56 +0200139
140 if (beagle_revision_c) {
141 MUX_BEAGLE_C();
142 }
Dirk Behmef904cdb2009-01-27 18:19:12 +0100143}