2 * Copyright (c) 2009 Wind River Systems, Inc.
3 * Tom Rix <Tom.Rix@windriver.com>
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>
13 * See file CREDITS for list of people who contributed to this
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.
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.
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,
32 #ifdef CONFIG_STATUS_LED
33 #include <status_led.h>
37 #include <asm/arch/gpio.h>
38 #include <asm/arch/mem.h>
39 #include <asm/arch/mux.h>
40 #include <asm/arch/sys_proto.h>
41 #include <asm/mach-types.h>
43 #include "zoom2_serial.h"
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
50 * The details of the setting of the serial gpmc setup are not available.
51 * The values were provided by another party.
53 extern void enable_gpmc_config(u32 *gpmc_config, gpmc_csx_t *gpmc_cs_base,
56 static u32 gpmc_serial_TL16CP754C[GPMC_MAX_REG] = {
65 /* Used to track the revision of the board */
66 static zoom2_revision revision = ZOOM2_REVISION_UNKNOWN;
69 * Routine: zoom2_get_revision
70 * Description: Return the revision of the Zoom2 this code is running on.
72 zoom2_revision zoom2_get_revision(void)
78 * Routine: zoom2_identify
79 * Description: Detect which version of Zoom2 we are running on.
81 void zoom2_identify(void)
84 * To check for production board vs beta board,
85 * check if gpio 94 is clear.
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.
92 if (!omap_request_gpio(94)) {
95 omap_set_gpio_direction(94, 1);
96 val = omap_get_gpio_datain(94);
100 revision = ZOOM2_REVISION_BETA;
102 revision = ZOOM2_REVISION_PRODUCTION;
105 printf("Board revision ");
107 case ZOOM2_REVISION_PRODUCTION:
108 printf("Production\n");
110 case ZOOM2_REVISION_BETA:
120 * Routine: board_init
121 * Description: Early hardware init.
123 int board_init (void)
125 DECLARE_GLOBAL_DATA_PTR;
126 gpmc_csx_t *serial_cs_base;
129 gpmc_init (); /* in SRAM or SDRAM, finish GPMC */
131 /* Configure console support on zoom2 */
132 gpmc_config = gpmc_serial_TL16CP754C;
133 serial_cs_base = (gpmc_csx_t *) (GPMC_CONFIG_CS0_BASE +
134 (3 * GPMC_CONFIG_WIDTH));
135 enable_gpmc_config(gpmc_config,
137 SERIAL_TL16CP754C_BASE,
140 /* board id for Linux */
141 gd->bd->bi_arch_number = MACH_TYPE_OMAP_ZOOM2;
142 /* boot param addr */
143 gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);
145 #if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT)
146 status_led_set (STATUS_LED_BOOT, STATUS_LED_ON);
152 * Routine: misc_init_r
153 * Description: Configure zoom board specific configurations
155 int misc_init_r(void)
158 twl4030_power_init();
164 * The board is reset by holding the the large button
165 * on the top right side of the main board for
168 * There are reported problems of some beta boards
169 * continously resetting. For those boards, disable resetting.
171 if (ZOOM2_REVISION_PRODUCTION <= zoom2_get_revision())
172 twl4030_power_reset_init();
178 * Routine: set_muxconf_regs
179 * Description: Setting up the configuration Mux registers specific to the
180 * hardware. Many pins need to be moved from protect to primary
183 void set_muxconf_regs (void)
185 /* platform specific muxes */