mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-16 09:48:16 +00:00
143 lines
3.5 KiB
C
143 lines
3.5 KiB
C
/*
|
|
* (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();
|
|
}
|
|
}
|