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Tom Rix376aee72009-05-15 23:48:36 +02001/*
2 * Copyright (c) 2009 Wind River Systems, Inc.
3 * Tom Rix <Tom.Rix@windriver.com>
4 *
5 * Derived from Zoom1 code by
6 * Nishanth Menon <nm@ti.com>
7 * Sunil Kumar <sunilsaini05@gmail.com>
8 * Shashi Ranjan <shashiranjanmca05@gmail.com>
9 * Richard Woodruff <r-woodruff2@ti.com>
10 * Syed Mohammed Khasim <khasim@ti.com>
11 *
12 *
13 * See file CREDITS for list of people who contributed to this
14 * project.
15 *
16 * This program is free software; you can redistribute it and/or
17 * modify it under the terms of the GNU General Public License as
18 * published by the Free Software Foundation; either version 2 of
19 * the License, or (at your option) any later version.
20 *
21 * This program is distributed in the hope that it will be useful,
22 * but WITHOUT ANY WARRANTY; without even the implied warranty of
23 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
24 * GNU General Public License for more details.
25 *
26 * You should have received a copy of the GNU General Public License
27 * along with this program; if not, write to the Free Software
28 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
29 * MA 02111-1307 USA
30 */
31#include <common.h>
Tom Rix83ae6982009-05-31 12:44:39 +020032#ifdef CONFIG_STATUS_LED
33#include <status_led.h>
34#endif
Tom Rixcd782632009-06-28 12:52:29 -050035#include <twl4030.h>
Tom Rix376aee72009-05-15 23:48:36 +020036#include <asm/io.h>
Tom Rixa30f5192009-06-02 20:53:56 -050037#include <asm/arch/gpio.h>
Tom Rix660888b2009-05-31 12:44:37 +020038#include <asm/arch/mem.h>
Tom Rix376aee72009-05-15 23:48:36 +020039#include <asm/arch/mux.h>
40#include <asm/arch/sys_proto.h>
41#include <asm/mach-types.h>
42#include "zoom2.h"
Tom Rix660888b2009-05-31 12:44:37 +020043#include "zoom2_serial.h"
44
45/*
46 * This the the zoom2, board specific, gpmc configuration for the
47 * quad uart on the debug board. The more general gpmc configurations
48 * are setup at the cpu level in cpu/arm_cortexa8/omap3/mem.c
49 *
50 * The details of the setting of the serial gpmc setup are not available.
51 * The values were provided by another party.
52 */
Matthias Ludwig187af952009-05-19 09:09:31 +020053void enable_gpmc_cs_config(u32 *gpmc_config, struct gpmc_cs *cs, u32 base,
54 u32 size);
Tom Rix660888b2009-05-31 12:44:37 +020055
56static u32 gpmc_serial_TL16CP754C[GPMC_MAX_REG] = {
57 0x00011000,
58 0x001F1F01,
59 0x00080803,
60 0x1D091D09,
61 0x041D1F1F,
62 0x1D0904C4, 0
63};
Tom Rix376aee72009-05-15 23:48:36 +020064
Tom Rixa30f5192009-06-02 20:53:56 -050065/* Used to track the revision of the board */
66static zoom2_revision revision = ZOOM2_REVISION_UNKNOWN;
67
68/*
69 * Routine: zoom2_get_revision
70 * Description: Return the revision of the Zoom2 this code is running on.
71 */
72zoom2_revision zoom2_get_revision(void)
73{
74 return revision;
75}
76
77/*
78 * Routine: zoom2_identify
79 * Description: Detect which version of Zoom2 we are running on.
80 */
81void zoom2_identify(void)
82{
83 /*
84 * To check for production board vs beta board,
85 * check if gpio 94 is clear.
86 *
87 * No way yet to check for alpha board identity.
88 * Alpha boards were produced in very limited quantities
89 * and they are not commonly used. They are mentioned here
90 * only for completeness.
91 */
92 if (!omap_request_gpio(94)) {
93 unsigned int val;
94
95 omap_set_gpio_direction(94, 1);
96 val = omap_get_gpio_datain(94);
97 omap_free_gpio(94);
98
99 if (val)
100 revision = ZOOM2_REVISION_BETA;
101 else
102 revision = ZOOM2_REVISION_PRODUCTION;
103 }
104
105 printf("Board revision ");
106 switch (revision) {
107 case ZOOM2_REVISION_PRODUCTION:
108 printf("Production\n");
109 break;
110 case ZOOM2_REVISION_BETA:
111 printf("Beta\n");
112 break;
113 default:
114 printf("Unknown\n");
115 break;
116 }
117}
118
Tom Rix376aee72009-05-15 23:48:36 +0200119/*
120 * Routine: board_init
121 * Description: Early hardware init.
122 */
123int board_init (void)
124{
125 DECLARE_GLOBAL_DATA_PTR;
Matthias Ludwig187af952009-05-19 09:09:31 +0200126 gpmc_t *gpmc = (gpmc_t *)GPMC_BASE;
Tom Rix660888b2009-05-31 12:44:37 +0200127 u32 *gpmc_config;
Tom Rix376aee72009-05-15 23:48:36 +0200128
129 gpmc_init (); /* in SRAM or SDRAM, finish GPMC */
Tom Rix660888b2009-05-31 12:44:37 +0200130
131 /* Configure console support on zoom2 */
132 gpmc_config = gpmc_serial_TL16CP754C;
Matthias Ludwig187af952009-05-19 09:09:31 +0200133 enable_gpmc_cs_config(gpmc_config, &gpmc->cs[4],
134 SERIAL_TL16CP754C_BASE, GPMC_SIZE_16M);
Tom Rix660888b2009-05-31 12:44:37 +0200135
Tom Rix376aee72009-05-15 23:48:36 +0200136 /* board id for Linux */
137 gd->bd->bi_arch_number = MACH_TYPE_OMAP_ZOOM2;
138 /* boot param addr */
139 gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);
140
Tom Rix660888b2009-05-31 12:44:37 +0200141#if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT)
142 status_led_set (STATUS_LED_BOOT, STATUS_LED_ON);
143#endif
Tom Rix376aee72009-05-15 23:48:36 +0200144 return 0;
145}
146
147/*
148 * Routine: misc_init_r
149 * Description: Configure zoom board specific configurations
150 */
Tom Rixa30f5192009-06-02 20:53:56 -0500151int misc_init_r(void)
Tom Rix376aee72009-05-15 23:48:36 +0200152{
Tom Rixa30f5192009-06-02 20:53:56 -0500153 zoom2_identify();
Tom Rix2c155132009-06-28 12:52:30 -0500154 twl4030_power_init();
155 twl4030_led_init();
Tom Rixa30f5192009-06-02 20:53:56 -0500156 dieid_num_r();
Tom Rixcd782632009-06-28 12:52:29 -0500157
158 /*
159 * Board Reset
160 * The board is reset by holding the the large button
161 * on the top right side of the main board for
162 * eight seconds.
163 *
164 * There are reported problems of some beta boards
165 * continously resetting. For those boards, disable resetting.
166 */
167 if (ZOOM2_REVISION_PRODUCTION <= zoom2_get_revision())
168 twl4030_power_reset_init();
169
Tom Rix376aee72009-05-15 23:48:36 +0200170 return 0;
171}
172
173/*
174 * Routine: set_muxconf_regs
175 * Description: Setting up the configuration Mux registers specific to the
176 * hardware. Many pins need to be moved from protect to primary
177 * mode.
178 */
179void set_muxconf_regs (void)
180{
181 /* platform specific muxes */
182 MUX_ZOOM2 ();
183}