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Dirk Behme2781f802009-01-27 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>
33#include <asm/io.h>
34#include <asm/arch/mux.h>
35#include <asm/arch/sys_proto.h>
36#include <asm/mach-types.h>
37#include "beagle.h"
38
Dirk Behme78716112009-02-12 18:55:41 +010039static int beagle_revision_c;
40
Dirk Behme2781f802009-01-27 18:19:12 +010041/******************************************************************************
42 * Routine: board_init
43 * Description: Early hardware init.
44 *****************************************************************************/
45int board_init(void)
46{
47 DECLARE_GLOBAL_DATA_PTR;
48
49 gpmc_init(); /* in SRAM or SDRAM, finish GPMC */
50 /* board id for Linux */
51 gd->bd->bi_arch_number = MACH_TYPE_OMAP3_BEAGLE;
52 /* boot param addr */
53 gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);
54
55 return 0;
56}
57
58/******************************************************************************
Dirk Behme78716112009-02-12 18:55:41 +010059 * Routine: beagle_get_revision
60 * Description: Return revision of the BeagleBoard this code is running on.
61 * If it is a revision Ax/Bx board, this function returns 0,
62 * on a revision C board you will get a 1.
63 *****************************************************************************/
64int beagle_get_revision(void)
65{
66 return beagle_revision_c;
67}
68
69/******************************************************************************
70 * Routine: beagle_identify
71 * Description: Detect if we are running on a Beagle revision Ax/Bx or
72 * Cx. This can be done by GPIO_171. If this is low, we are
73 * running on a revision C board.
74 *****************************************************************************/
75void beagle_identify(void)
76{
77 gpio_t *gpio6_base = (gpio_t *)OMAP34XX_GPIO6_BASE;
78
79 /* Configure GPIO 171 as input */
80 writel(readl(&gpio6_base->oe) | GPIO11, &gpio6_base->oe);
81
82 /* Get value of GPIO 171 */
83 beagle_revision_c = readl(&gpio6_base->datain) & BOARD_REVISION_MASK;
84
85 printf("Board revision ");
86 if (beagle_revision_c) {
87 printf("Ax/Bx\n");
88 beagle_revision_c = 0;
89 } else {
90 printf("C\n");
91 beagle_revision_c = 1;
92 }
93}
94
95/******************************************************************************
Dirk Behme2781f802009-01-27 18:19:12 +010096 * Routine: misc_init_r
97 * Description: Configure board specific parts
98 *****************************************************************************/
99int misc_init_r(void)
100{
101 gpio_t *gpio5_base = (gpio_t *)OMAP34XX_GPIO5_BASE;
102 gpio_t *gpio6_base = (gpio_t *)OMAP34XX_GPIO6_BASE;
103
104 power_init_r();
105
106 /* Configure GPIOs to output */
107 writel(~(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1), &gpio6_base->oe);
108 writel(~(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 |
109 GPIO15 | GPIO14 | GPIO13 | GPIO12), &gpio5_base->oe);
110
111 /* Set GPIOs */
112 writel(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1,
113 &gpio6_base->setdataout);
114 writel(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 |
115 GPIO15 | GPIO14 | GPIO13 | GPIO12, &gpio5_base->setdataout);
116
Dirk Behme78716112009-02-12 18:55:41 +0100117 beagle_identify();
118
Dirk Behme12dbcf62009-03-12 19:30:50 +0100119 dieid_num_r();
120
Dirk Behme2781f802009-01-27 18:19:12 +0100121 return 0;
122}
123
124/******************************************************************************
125 * Routine: set_muxconf_regs
126 * Description: Setting up the configuration Mux registers specific to the
127 * hardware. Many pins need to be moved from protect to primary
128 * mode.
129 *****************************************************************************/
130void set_muxconf_regs(void)
131{
132 MUX_BEAGLE();
133}