upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
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131 lines
4.2 KiB
131 lines
4.2 KiB
/*
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* (C) Copyright 2004-2008
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* Texas Instruments, <www.ti.com>
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*
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* Author :
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* Sunil Kumar <sunilsaini05@gmail.com>
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* Shashi Ranjan <shashiranjanmca05@gmail.com>
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*
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* Derived from Beagle Board and 3430 SDP code by
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* Richard Woodruff <r-woodruff2@ti.com>
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* Syed Mohammed Khasim <khasim@ti.com>
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*
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <asm/io.h>
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#include <asm/arch/mux.h>
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#include <asm/arch/sys_proto.h>
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#include <asm/mach-types.h>
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#include "beagle.h"
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static int beagle_revision_c;
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/******************************************************************************
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* Routine: board_init
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* Description: Early hardware init.
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*****************************************************************************/
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int board_init(void)
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{
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DECLARE_GLOBAL_DATA_PTR;
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gpmc_init(); /* in SRAM or SDRAM, finish GPMC */
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/* board id for Linux */
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gd->bd->bi_arch_number = MACH_TYPE_OMAP3_BEAGLE;
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/* boot param addr */
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gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);
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return 0;
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}
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/******************************************************************************
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* Routine: beagle_get_revision
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* Description: Return revision of the BeagleBoard this code is running on.
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* If it is a revision Ax/Bx board, this function returns 0,
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* on a revision C board you will get a 1.
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*****************************************************************************/
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int beagle_get_revision(void)
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{
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return beagle_revision_c;
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}
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/******************************************************************************
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* Routine: beagle_identify
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* Description: Detect if we are running on a Beagle revision Ax/Bx or
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* Cx. This can be done by GPIO_171. If this is low, we are
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* running on a revision C board.
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*****************************************************************************/
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void beagle_identify(void)
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{
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gpio_t *gpio6_base = (gpio_t *)OMAP34XX_GPIO6_BASE;
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/* Configure GPIO 171 as input */
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writel(readl(&gpio6_base->oe) | GPIO11, &gpio6_base->oe);
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/* Get value of GPIO 171 */
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beagle_revision_c = readl(&gpio6_base->datain) & BOARD_REVISION_MASK;
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printf("Board revision ");
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if (beagle_revision_c) {
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printf("Ax/Bx\n");
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beagle_revision_c = 0;
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} else {
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printf("C\n");
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beagle_revision_c = 1;
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}
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}
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/******************************************************************************
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* Routine: misc_init_r
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* Description: Configure board specific parts
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*****************************************************************************/
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int misc_init_r(void)
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{
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gpio_t *gpio5_base = (gpio_t *)OMAP34XX_GPIO5_BASE;
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gpio_t *gpio6_base = (gpio_t *)OMAP34XX_GPIO6_BASE;
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power_init_r();
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/* Configure GPIOs to output */
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writel(~(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1), &gpio6_base->oe);
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writel(~(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 |
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GPIO15 | GPIO14 | GPIO13 | GPIO12), &gpio5_base->oe);
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/* Set GPIOs */
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writel(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1,
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&gpio6_base->setdataout);
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writel(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 |
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GPIO15 | GPIO14 | GPIO13 | GPIO12, &gpio5_base->setdataout);
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beagle_identify();
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return 0;
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}
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/******************************************************************************
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* Routine: set_muxconf_regs
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* Description: Setting up the configuration Mux registers specific to the
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* hardware. Many pins need to be moved from protect to primary
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* mode.
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*****************************************************************************/
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void set_muxconf_regs(void)
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{
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MUX_BEAGLE();
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}
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