2 * (C) Copyright 2004-2008
3 * Texas Instruments, <www.ti.com>
6 * Sunil Kumar <sunilsaini05@gmail.com>
7 * Shashi Ranjan <shashiranjanmca05@gmail.com>
9 * Derived from Beagle Board and 3430 SDP code by
10 * Richard Woodruff <r-woodruff2@ti.com>
11 * Syed Mohammed Khasim <khasim@ti.com>
14 * See file CREDITS for list of people who contributed to this
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.
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.
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,
34 #include <asm/arch/mux.h>
35 #include <asm/arch/sys_proto.h>
36 #include <asm/mach-types.h>
39 static int beagle_revision_c;
43 * Description: Early hardware init.
47 DECLARE_GLOBAL_DATA_PTR;
49 gpmc_init(); /* in SRAM or SDRAM, finish GPMC */
50 /* board id for Linux */
51 gd->bd->bi_arch_number = MACH_TYPE_OMAP3_BEAGLE;
53 gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);
59 * 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.
64 int beagle_get_revision(void)
66 return beagle_revision_c;
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.
75 void beagle_identify(void)
77 gpio_t *gpio6_base = (gpio_t *)OMAP34XX_GPIO6_BASE;
79 /* Configure GPIO 171 as input */
80 writel(readl(&gpio6_base->oe) | GPIO11, &gpio6_base->oe);
82 /* Get value of GPIO 171 */
83 beagle_revision_c = readl(&gpio6_base->datain) & BOARD_REVISION_MASK;
85 printf("Board revision ");
86 if (beagle_revision_c) {
88 beagle_revision_c = 0;
91 beagle_revision_c = 1;
96 * Routine: misc_init_r
97 * Description: Configure board specific parts
101 gpio_t *gpio5_base = (gpio_t *)OMAP34XX_GPIO5_BASE;
102 gpio_t *gpio6_base = (gpio_t *)OMAP34XX_GPIO6_BASE;
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);
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);
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
130 void set_muxconf_regs(void)