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/*
* Copyright (c) 2009 Wind River Systems, Inc.
* Tom Rix <Tom.Rix@windriver.com>
*
* Derived from Zoom1 code by
* Nishanth Menon <nm@ti.com>
* Sunil Kumar <sunilsaini05@gmail.com>
* Shashi Ranjan <shashiranjanmca05@gmail.com>
* 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>
#ifdef CONFIG_STATUS_LED
#include <status_led.h>
#endif
#include <twl4030.h>
#include <asm/io.h>
#include <asm/arch/gpio.h>
#include <asm/arch/mem.h>
#include <asm/arch/mux.h>
#include <asm/arch/sys_proto.h>
#include <asm/mach-types.h>
#include "zoom2.h"
#include "zoom2_serial.h"
/*
* This the the zoom2, board specific, gpmc configuration for the
* quad uart on the debug board. The more general gpmc configurations
* are setup at the cpu level in cpu/arm_cortexa8/omap3/mem.c
*
* The details of the setting of the serial gpmc setup are not available.
* The values were provided by another party.
*/
extern void enable_gpmc_config(u32 *gpmc_config, gpmc_csx_t *gpmc_cs_base,
u32 base, u32 size);
static u32 gpmc_serial_TL16CP754C[GPMC_MAX_REG] = {
0x00011000,
0x001F1F01,
0x00080803,
0x1D091D09,
0x041D1F1F,
0x1D0904C4, 0
};
/* Used to track the revision of the board */
static zoom2_revision revision = ZOOM2_REVISION_UNKNOWN;
/*
* Routine: zoom2_get_revision
* Description: Return the revision of the Zoom2 this code is running on.
*/
zoom2_revision zoom2_get_revision(void)
{
return revision;
}
/*
* Routine: zoom2_identify
* Description: Detect which version of Zoom2 we are running on.
*/
void zoom2_identify(void)
{
/*
* To check for production board vs beta board,
* check if gpio 94 is clear.
*
* No way yet to check for alpha board identity.
* Alpha boards were produced in very limited quantities
* and they are not commonly used. They are mentioned here
* only for completeness.
*/
if (!omap_request_gpio(94)) {
unsigned int val;
omap_set_gpio_direction(94, 1);
val = omap_get_gpio_datain(94);
omap_free_gpio(94);
if (val)
revision = ZOOM2_REVISION_BETA;
else
revision = ZOOM2_REVISION_PRODUCTION;
}
printf("Board revision ");
switch (revision) {
case ZOOM2_REVISION_PRODUCTION:
printf("Production\n");
break;
case ZOOM2_REVISION_BETA:
printf("Beta\n");
break;
default:
printf("Unknown\n");
break;
}
}
/*
* Routine: board_init
* Description: Early hardware init.
*/
int board_init (void)
{
DECLARE_GLOBAL_DATA_PTR;
gpmc_csx_t *serial_cs_base;
u32 *gpmc_config;
gpmc_init (); /* in SRAM or SDRAM, finish GPMC */
/* Configure console support on zoom2 */
gpmc_config = gpmc_serial_TL16CP754C;
serial_cs_base = (gpmc_csx_t *) (GPMC_CONFIG_CS0_BASE +
(3 * GPMC_CONFIG_WIDTH));
enable_gpmc_config(gpmc_config,
serial_cs_base,
SERIAL_TL16CP754C_BASE,
GPMC_SIZE_16M);
/* board id for Linux */
gd->bd->bi_arch_number = MACH_TYPE_OMAP_ZOOM2;
/* boot param addr */
gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);
#if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT)
status_led_set (STATUS_LED_BOOT, STATUS_LED_ON);
#endif
return 0;
}
/*
* Routine: misc_init_r
* Description: Configure zoom board specific configurations
*/
int misc_init_r(void)
{
zoom2_identify();
twl4030_power_init();
twl4030_led_init();
dieid_num_r();
/*
* Board Reset
* The board is reset by holding the the large button
* on the top right side of the main board for
* eight seconds.
*
* There are reported problems of some beta boards
* continously resetting. For those boards, disable resetting.
*/
if (ZOOM2_REVISION_PRODUCTION <= zoom2_get_revision())
twl4030_power_reset_init();
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)
{
/* platform specific muxes */
MUX_ZOOM2 ();
}
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