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Diffstat (limited to 'board/ti/beagle/beagle.c')
| -rw-r--r-- | board/ti/beagle/beagle.c | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/board/ti/beagle/beagle.c b/board/ti/beagle/beagle.c new file mode 100644 index 0000000..32d501e --- /dev/null +++ b/board/ti/beagle/beagle.c @@ -0,0 +1,143 @@ +/* + * (C) Copyright 2004-2008 + * Texas Instruments, <www.ti.com> + * + * Author : + * Sunil Kumar <sunilsaini05@gmail.com> + * Shashi Ranjan <shashiranjanmca05@gmail.com> + * + * Derived from Beagle Board and 3430 SDP code by + * Richard Woodruff <r-woodruff2@ti.com> + * Syed Mohammed Khasim <khasim@ti.com> + * + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ +#include <common.h> +#include <twl4030.h> +#include <asm/io.h> +#include <asm/arch/mux.h> +#include <asm/arch/sys_proto.h> +#include <asm/arch/gpio.h> +#include <asm/mach-types.h> +#include "beagle.h" + +static int beagle_revision_c; + +/* + * Routine: board_init + * Description: Early hardware init. + */ +int board_init(void) +{ + DECLARE_GLOBAL_DATA_PTR; + + gpmc_init(); /* in SRAM or SDRAM, finish GPMC */ + /* board id for Linux */ + gd->bd->bi_arch_number = MACH_TYPE_OMAP3_BEAGLE; + /* boot param addr */ + gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100); + + return 0; +} + +/* + * Routine: beagle_get_revision + * Description: Return the revision of the BeagleBoard this code is running on. + * If it is a revision Ax/Bx board, this function returns 0, + * on a revision C board you will get a 1. + */ +int beagle_get_revision(void) +{ + return beagle_revision_c; +} + +/* + * Routine: beagle_identify + * Description: Detect if we are running on a Beagle revision Ax/Bx or + * Cx. This can be done by GPIO_171. If this is low, we are + * running on a revision C board. + */ +void beagle_identify(void) +{ + beagle_revision_c = 0; + if (!omap_request_gpio(171)) { + unsigned int val; + + omap_set_gpio_direction(171, 1); + val = omap_get_gpio_datain(171); + omap_free_gpio(171); + + if (val) + beagle_revision_c = 0; + else + beagle_revision_c = 1; + } + + printf("Board revision "); + if (beagle_revision_c) + printf("C\n"); + else + printf("Ax/Bx\n"); +} + +/* + * Routine: misc_init_r + * Description: Configure board specific parts + */ +int misc_init_r(void) +{ + struct gpio *gpio5_base = (struct gpio *)OMAP34XX_GPIO5_BASE; + struct gpio *gpio6_base = (struct gpio *)OMAP34XX_GPIO6_BASE; + + twl4030_power_init(); + twl4030_led_init(); + + /* Configure GPIOs to output */ + writel(~(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1), &gpio6_base->oe); + writel(~(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 | + GPIO15 | GPIO14 | GPIO13 | GPIO12), &gpio5_base->oe); + + /* Set GPIOs */ + writel(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1, + &gpio6_base->setdataout); + writel(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 | + GPIO15 | GPIO14 | GPIO13 | GPIO12, &gpio5_base->setdataout); + + beagle_identify(); + + dieid_num_r(); + + return 0; +} + +/* + * Routine: set_muxconf_regs + * Description: Setting up the configuration Mux registers specific to the + * hardware. Many pins need to be moved from protect to primary + * mode. + */ +void set_muxconf_regs(void) +{ + MUX_BEAGLE(); + + if (beagle_revision_c) { + MUX_BEAGLE_C(); + } +} |