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/*
* (C) Copyright 2002
* Robert Schwebel, Pengutronix, r.schwebel@pengutronix.de
* Kyle Harris, Nexus Technologies, Inc., kharris@nexus-tech.net
* Marius Groeger, Sysgo Real-Time Solutions GmbH, mgroeger@sysgo.de
*
* 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 <asm/arch/pxa-regs.h>
#include <asm/mach-types.h>
DECLARE_GLOBAL_DATA_PTR;
#ifdef CONFIG_SHOW_BOOT_PROGRESS
# define SHOW_BOOT_PROGRESS(arg) show_boot_progress(arg)
#else
# define SHOW_BOOT_PROGRESS(arg)
#endif
/**
* i2c_init_board - reset i2c bus. When the board is powercycled during a
* bus transfer it might hang; for details see doc/I2C_Edge_Conditions.
* The Innokom board has GPIO70 connected to SCLK which can be toggled
* until all chips think that their current cycles are finished.
*/
int i2c_init_board(void)
{
int i, icr;
/* disable I2C controller first, otherwhise it thinks we want to */
/* talk to the slave port... */
icr = ICR; ICR &= ~(ICR_SCLE | ICR_IUE);
/* set gpio pin low _before_ we change direction to output */
GPCR(70) = GPIO_bit(70);
/* now toggle between output=low and high-impedance */
for (i = 0; i < 20; i++) {
GPDR(70) |= GPIO_bit(70); /* output */
udelay(10);
GPDR(70) &= ~GPIO_bit(70); /* input */
udelay(10);
}
ICR = icr;
return 0;
}
/**
* misc_init_r: - misc initialisation routines
*/
int misc_init_r(void)
{
char *str;
/* determine if the software update key is pressed during startup */
if (GPLR0 & 0x00000800) {
printf("using bootcmd_normal (sw-update button not pressed)\n");
str = getenv("bootcmd_normal");
} else {
printf("using bootcmd_update (sw-update button pressed)\n");
str = getenv("bootcmd_update");
}
setenv("bootcmd",str);
return 0;
}
/**
* board_init: - setup some data structures
*
* @return: 0 in case of success
*/
int board_init (void)
{
/* memory and cpu-speed are setup before relocation */
/* so we do _nothing_ here */
gd->bd->bi_arch_number = MACH_TYPE_INNOKOM;
gd->bd->bi_boot_params = 0xa0000100;
gd->bd->bi_baudrate = CONFIG_BAUDRATE;
return 0;
}
/**
* dram_init: - setup dynamic RAM
*
* @return: 0 in case of success
*/
int dram_init (void)
{
gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
return 0;
}
/**
* innokom_set_led: - switch LEDs on or off
*
* @param led: LED to switch (0,1,2)
* @param state: switch on (1) or off (0)
*/
void innokom_set_led(int led, int state)
{
switch(led) {
/*
case 0: if (state==1) {
GPCR0 |= CSB226_USER_LED0;
} else if (state==0) {
GPSR0 |= CSB226_USER_LED0;
}
break;
case 1: if (state==1) {
GPCR0 |= CSB226_USER_LED1;
} else if (state==0) {
GPSR0 |= CSB226_USER_LED1;
}
break;
case 2: if (state==1) {
GPCR0 |= CSB226_USER_LED2;
} else if (state==0) {
GPSR0 |= CSB226_USER_LED2;
}
break;
*/
}
return;
}
/**
* show_boot_progress: - indicate state of the boot process
*
* @param status: Status number - see README for details.
*
* The CSB226 does only have 3 LEDs, so we switch them on at the most
* important states (1, 5, 15).
*/
void show_boot_progress (int status)
{
switch(status) {
/*
case 1: csb226_set_led(0,1); break;
case 5: csb226_set_led(1,1); break;
case 15: csb226_set_led(2,1); break;
*/
}
return;
}
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