Dirk Behme | 2781f80 | 2009-01-27 18:19:12 +0100 | [diff] [blame] | 1 | /* |
| 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 Behme | 7871611 | 2009-02-12 18:55:41 +0100 | [diff] [blame] | 39 | static int beagle_revision_c; |
| 40 | |
Dirk Behme | 2781f80 | 2009-01-27 18:19:12 +0100 | [diff] [blame] | 41 | /****************************************************************************** |
| 42 | * Routine: board_init |
| 43 | * Description: Early hardware init. |
| 44 | *****************************************************************************/ |
| 45 | int 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 Behme | 7871611 | 2009-02-12 18:55:41 +0100 | [diff] [blame] | 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. |
| 63 | *****************************************************************************/ |
| 64 | int 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 | *****************************************************************************/ |
| 75 | void 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 Behme | 2781f80 | 2009-01-27 18:19:12 +0100 | [diff] [blame] | 96 | * Routine: misc_init_r |
| 97 | * Description: Configure board specific parts |
| 98 | *****************************************************************************/ |
| 99 | int 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 Behme | 7871611 | 2009-02-12 18:55:41 +0100 | [diff] [blame] | 117 | beagle_identify(); |
| 118 | |
Dirk Behme | 12dbcf6 | 2009-03-12 19:30:50 +0100 | [diff] [blame] | 119 | dieid_num_r(); |
| 120 | |
Dirk Behme | 2781f80 | 2009-01-27 18:19:12 +0100 | [diff] [blame] | 121 | 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 | *****************************************************************************/ |
| 130 | void set_muxconf_regs(void) |
| 131 | { |
| 132 | MUX_BEAGLE(); |
| 133 | } |