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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>
Tom Rix0f2a8042009-06-28 12:52:30 -050033#include <twl4030.h>
Dirk Behme2781f802009-01-27 18:19:12 +010034#include <asm/io.h>
35#include <asm/arch/mux.h>
36#include <asm/arch/sys_proto.h>
Tom Rix70d05412009-06-03 01:53:57 -050037#include <asm/arch/gpio.h>
Dirk Behme2781f802009-01-27 18:19:12 +010038#include <asm/mach-types.h>
39#include "beagle.h"
40
Tom Rix558bb832009-04-01 22:02:20 -050041/*
Dirk Behme2781f802009-01-27 18:19:12 +010042 * Routine: board_init
43 * Description: Early hardware init.
Tom Rix558bb832009-04-01 22:02:20 -050044 */
Dirk Behme2781f802009-01-27 18:19:12 +010045int 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
Tom Rix558bb832009-04-01 22:02:20 -050058/*
Steve Sakoman3ca33762010-08-12 15:17:37 -070059 * Routine: get_board_revision
60 * Description: Detect if we are running on a Beagle revision Ax/Bx,
Steve Sakomanac929952010-08-19 20:56:11 -070061 * C1/2/3, C4 or xM. This can be done by reading
Steve Sakoman3ca33762010-08-12 15:17:37 -070062 * the level of GPIO173, GPIO172 and GPIO171. This should
63 * result in
64 * GPIO173, GPIO172, GPIO171: 1 1 1 => Ax/Bx
65 * GPIO173, GPIO172, GPIO171: 1 1 0 => C1/2/3
66 * GPIO173, GPIO172, GPIO171: 1 0 1 => C4
Steve Sakomanac929952010-08-19 20:56:11 -070067 * GPIO173, GPIO172, GPIO171: 0 0 0 => xM
Tom Rix558bb832009-04-01 22:02:20 -050068 */
Steve Sakoman3ca33762010-08-12 15:17:37 -070069int get_board_revision(void)
Dirk Behme78716112009-02-12 18:55:41 +010070{
Steve Sakoman3ca33762010-08-12 15:17:37 -070071 int revision;
Dirk Behme78716112009-02-12 18:55:41 +010072
Steve Sakoman3ca33762010-08-12 15:17:37 -070073 if (!omap_request_gpio(171) &&
74 !omap_request_gpio(172) &&
75 !omap_request_gpio(173)) {
Dirk Behme78716112009-02-12 18:55:41 +010076
Tom Rix70d05412009-06-03 01:53:57 -050077 omap_set_gpio_direction(171, 1);
Steve Sakoman3ca33762010-08-12 15:17:37 -070078 omap_set_gpio_direction(172, 1);
79 omap_set_gpio_direction(173, 1);
Dirk Behme78716112009-02-12 18:55:41 +010080
Steve Sakoman3ca33762010-08-12 15:17:37 -070081 revision = omap_get_gpio_datain(173) << 2 |
82 omap_get_gpio_datain(172) << 1 |
83 omap_get_gpio_datain(171);
84
85 omap_free_gpio(171);
86 omap_free_gpio(172);
87 omap_free_gpio(173);
88 } else {
89 printf("Error: unable to acquire board revision GPIOs\n");
90 revision = -1;
Tom Rix70d05412009-06-03 01:53:57 -050091 }
Dirk Behme78716112009-02-12 18:55:41 +010092
Steve Sakoman3ca33762010-08-12 15:17:37 -070093 return revision;
Dirk Behme78716112009-02-12 18:55:41 +010094}
95
Tom Rix558bb832009-04-01 22:02:20 -050096/*
Dirk Behme2781f802009-01-27 18:19:12 +010097 * Routine: misc_init_r
98 * Description: Configure board specific parts
Tom Rix558bb832009-04-01 22:02:20 -050099 */
Dirk Behme2781f802009-01-27 18:19:12 +0100100int misc_init_r(void)
101{
Dirk Behmedc7af202009-08-08 09:30:21 +0200102 struct gpio *gpio5_base = (struct gpio *)OMAP34XX_GPIO5_BASE;
103 struct gpio *gpio6_base = (struct gpio *)OMAP34XX_GPIO6_BASE;
Dirk Behme2781f802009-01-27 18:19:12 +0100104
Steve Sakoman3ca33762010-08-12 15:17:37 -0700105 switch (get_board_revision()) {
106 case REVISION_AXBX:
107 printf("Beagle Rev Ax/Bx\n");
108 setenv("beaglerev", "AxBx");
109 setenv("mpurate", "600");
110 break;
111 case REVISION_CX:
112 printf("Beagle Rev C1/C2/C3\n");
113 setenv("beaglerev", "Cx");
114 setenv("mpurate", "600");
115 MUX_BEAGLE_C();
116 break;
117 case REVISION_C4:
118 printf("Beagle Rev C4\n");
Steve Sakomanac929952010-08-19 20:56:11 -0700119 setenv("beaglerev", "C4");
Steve Sakoman3ca33762010-08-12 15:17:37 -0700120 setenv("mpurate", "720");
121 MUX_BEAGLE_C();
122 /* Set VAUX2 to 1.8V for EHCI PHY */
123 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
124 TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
125 TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
126 TWL4030_PM_RECEIVER_DEV_GRP_P1);
127 break;
Steve Sakomanac929952010-08-19 20:56:11 -0700128 case REVISION_XM:
129 printf("Beagle xM Rev A\n");
130 setenv("beaglerev", "xMA");
131 setenv("mpurate", "1000");
132 MUX_BEAGLE_XM();
133 /* Set VAUX2 to 1.8V for EHCI PHY */
134 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
135 TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
136 TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
137 TWL4030_PM_RECEIVER_DEV_GRP_P1);
138 break;
Steve Sakoman3ca33762010-08-12 15:17:37 -0700139 default:
140 printf("Beagle unknown 0x%02x\n", get_board_revision());
141 }
142
Tom Rix0f2a8042009-06-28 12:52:30 -0500143 twl4030_power_init();
Grazvydas Ignotas17887bf2009-12-10 17:10:21 +0200144 twl4030_led_init(TWL4030_LED_LEDEN_LEDAON | TWL4030_LED_LEDEN_LEDBON);
Dirk Behme2781f802009-01-27 18:19:12 +0100145
146 /* Configure GPIOs to output */
147 writel(~(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1), &gpio6_base->oe);
148 writel(~(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 |
149 GPIO15 | GPIO14 | GPIO13 | GPIO12), &gpio5_base->oe);
150
151 /* Set GPIOs */
152 writel(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1,
153 &gpio6_base->setdataout);
154 writel(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 |
155 GPIO15 | GPIO14 | GPIO13 | GPIO12, &gpio5_base->setdataout);
156
Dirk Behme12dbcf62009-03-12 19:30:50 +0100157 dieid_num_r();
158
Dirk Behme2781f802009-01-27 18:19:12 +0100159 return 0;
160}
161
Tom Rix558bb832009-04-01 22:02:20 -0500162/*
Dirk Behme2781f802009-01-27 18:19:12 +0100163 * Routine: set_muxconf_regs
164 * Description: Setting up the configuration Mux registers specific to the
165 * hardware. Many pins need to be moved from protect to primary
166 * mode.
Tom Rix558bb832009-04-01 22:02:20 -0500167 */
Dirk Behme2781f802009-01-27 18:19:12 +0100168void set_muxconf_regs(void)
169{
170 MUX_BEAGLE();
Dirk Behme2781f802009-01-27 18:19:12 +0100171}