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/*
* (C) Copyright 2002
* Kyle Harris, Nexus Technologies, Inc. kharris@nexus-tech.net
*
* (C) Copyright 2002
* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
* Marius Groeger <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 <asm/arch/pxa-regs.h>
#include <common.h>
/* ------------------------------------------------------------------------- */
/* local prototypes */
void set_led (int led, int color);
void error_code_halt (int code);
int init_sio (int led, unsigned long base);
inline void cradle_outb (unsigned short val, unsigned long base,
unsigned long reg);
inline unsigned char cradle_inb (unsigned long base, unsigned long reg);
inline void sleep (int i);
inline void
/**********************************************************/
sleep (int i)
/**********************************************************/
{
while (i--) {
udelay (1000000);
}
}
void
/**********************************************************/
error_code_halt (int code)
/**********************************************************/
{
while (1) {
led_code (code, RED);
sleep (1);
led_code (0, OFF);
sleep (1);
}
}
void
/**********************************************************/
led_code (int code, int color)
/**********************************************************/
{
int i;
code &= 0xf; /* only 4 leds */
for (i = 0; i < 4; i++) {
if (code & (1 << i)) {
set_led (i, color);
} else {
set_led (i, OFF);
}
}
}
void
/**********************************************************/
set_led (int led, int color)
/**********************************************************/
{
int shift = led * 2;
unsigned long mask = 0x3 << shift;
CRADLE_LED_CLR_REG = mask; /* clear bits */
CRADLE_LED_SET_REG = (color << shift); /* set bits */
udelay (5000);
}
inline void
/**********************************************************/
cradle_outb (unsigned short val, unsigned long base, unsigned long reg)
/**********************************************************/
{
*(volatile unsigned short *) (base + (reg * 2)) = val;
}
inline unsigned char
/**********************************************************/
cradle_inb (unsigned long base, unsigned long reg)
/**********************************************************/
{
unsigned short val;
val = *(volatile unsigned short *) (base + (reg * 2));
return (val & 0xff);
}
int
/**********************************************************/
init_sio (int led, unsigned long base)
/**********************************************************/
{
unsigned char val;
set_led (led, YELLOW);
val = cradle_inb (base, CRADLE_SIO_INDEX);
val = cradle_inb (base, CRADLE_SIO_INDEX);
if (val != 0) {
set_led (led, RED);
return -1;
}
/* map SCC2 to COM1 */
cradle_outb (0x01, base, CRADLE_SIO_INDEX);
cradle_outb (0x00, base, CRADLE_SIO_DATA);
/* enable SCC2 extended regs */
cradle_outb (0x40, base, CRADLE_SIO_INDEX);
cradle_outb (0xa0, base, CRADLE_SIO_DATA);
/* enable SCC2 clock multiplier */
cradle_outb (0x51, base, CRADLE_SIO_INDEX);
cradle_outb (0x04, base, CRADLE_SIO_DATA);
/* enable SCC2 */
cradle_outb (0x00, base, CRADLE_SIO_INDEX);
cradle_outb (0x04, base, CRADLE_SIO_DATA);
/* map SCC2 DMA to channel 0 */
cradle_outb (0x4f, base, CRADLE_SIO_INDEX);
cradle_outb (0x09, base, CRADLE_SIO_DATA);
/* read ID from SIO to check operation */
cradle_outb (0xe4, base, 0x3f8 + 0x3);
val = cradle_inb (base, 0x3f8 + 0x0);
if ((val & 0xf0) != 0x20) {
set_led (led, RED);
/* disable SCC2 */
cradle_outb (0, base, CRADLE_SIO_INDEX);
cradle_outb (0, base, CRADLE_SIO_DATA);
return -1;
}
/* set back to bank 0 */
cradle_outb (0, base, 0x3f8 + 0x3);
set_led (led, GREEN);
return 0;
}
/*
* Miscelaneous platform dependent initialisations
*/
int
/**********************************************************/
board_late_init (void)
/**********************************************************/
{
return (0);
}
int
/**********************************************************/
board_init (void)
/**********************************************************/
{
DECLARE_GLOBAL_DATA_PTR;
led_code (0xf, YELLOW);
/* arch number of HHP Cradle */
gd->bd->bi_arch_number = MACH_TYPE_HHP_CRADLE;
/* adress of boot parameters */
gd->bd->bi_boot_params = 0xa0000100;
/* Init SIOs to enable SCC2 */
udelay (100000); /* delay makes it look neat */
init_sio (0, CRADLE_SIO1_PHYS);
udelay (100000);
init_sio (1, CRADLE_SIO2_PHYS);
udelay (100000);
init_sio (2, CRADLE_SIO3_PHYS);
udelay (100000);
set_led (3, GREEN);
return 1;
}
int
/**********************************************************/
dram_init (void)
/**********************************************************/
{
DECLARE_GLOBAL_DATA_PTR;
gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
gd->bd->bi_dram[1].start = PHYS_SDRAM_2;
gd->bd->bi_dram[1].size = PHYS_SDRAM_2_SIZE;
gd->bd->bi_dram[2].start = PHYS_SDRAM_3;
gd->bd->bi_dram[2].size = PHYS_SDRAM_3_SIZE;
gd->bd->bi_dram[3].start = PHYS_SDRAM_4;
gd->bd->bi_dram[3].size = PHYS_SDRAM_4_SIZE;
return (PHYS_SDRAM_1_SIZE +
PHYS_SDRAM_2_SIZE +
PHYS_SDRAM_3_SIZE +
PHYS_SDRAM_4_SIZE );
}
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