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/*
* (C) Copyright 2005-2007
* Matthias Fuchs, esd gmbh germany, matthias.fuchs@esd-electronics.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 <asm/processor.h>
#include <asm/io.h>
#include <command.h>
#include <malloc.h>
DECLARE_GLOBAL_DATA_PTR;
extern void lxt971_no_sleep(void);
int board_early_init_f (void)
{
/*
* IRQ 0-15 405GP internally generated; active high; level sensitive
* IRQ 16 405GP internally generated; active low; level sensitive
* IRQ 17-24 RESERVED
* IRQ 25 (EXT IRQ 0) CAN0; active low; level sensitive
* IRQ 26 (EXT IRQ 1) SER0 ; active low; level sensitive
* IRQ 27 (EXT IRQ 2) SER1; active low; level sensitive
* IRQ 28 (EXT IRQ 3) FPGA 0; active low; level sensitive
* IRQ 29 (EXT IRQ 4) FPGA 1; active low; level sensitive
* IRQ 30 (EXT IRQ 5) PCI INTA; active low; level sensitive
* IRQ 31 (EXT IRQ 6) COMPACT FLASH; active high; level sensitive
*/
mtdcr(uicsr, 0xFFFFFFFF); /* clear all ints */
mtdcr(uicer, 0x00000000); /* disable all ints */
mtdcr(uiccr, 0x00000000); /* set all to be non-critical*/
mtdcr(uicpr, 0xFFFFFF80); /* set int polarities */
mtdcr(uictr, 0x10000000); /* set int trigger levels */
mtdcr(uicvcr, 0x00000001); /* set vect base=0,INT0 highest priority*/
mtdcr(uicsr, 0xFFFFFFFF); /* clear all ints */
/*
* EBC Configuration Register: set ready timeout to 512 ebc-clks -> ca. 15 us
*/
mtebc (epcr, 0xa8400000); /* ebc always driven */
/*
* Reset CPLD via GPIO12 (CS3) pin
*/
out_be32((void *)GPIO0_OR, in_be32((void *)GPIO0_OR) & ~CONFIG_SYS_PLD_RESET);
udelay(1000); /* wait 1ms */
out_be32((void *)GPIO0_OR, in_be32((void *)GPIO0_OR) | CONFIG_SYS_PLD_RESET);
udelay(1000); /* wait 1ms */
return 0;
}
int misc_init_r (void)
{
/* adjust flash start and offset */
gd->bd->bi_flashstart = 0 - gd->bd->bi_flashsize;
gd->bd->bi_flashoffset = 0;
/*
* Setup and enable EEPROM write protection
*/
out_be32((void *)GPIO0_OR, in_be32((void *)GPIO0_OR) | CONFIG_SYS_EEPROM_WP);
return (0);
}
/*
* Check Board Identity:
*/
#define LED_REG (CONFIG_SYS_PLD_BASE + 0x1000)
int checkboard (void)
{
char str[64];
int flashcnt;
int delay;
puts ("Board: ");
if (getenv_r("serial#", str, sizeof(str)) == -1) {
puts ("### No HW ID - assuming CMS700");
} else {
puts(str);
}
printf(" (PLD-Version=%02d)\n",
in_8((void *)(CONFIG_SYS_PLD_BASE + 0x1001)));
/*
* Flash LEDs
*/
for (flashcnt = 0; flashcnt < 3; flashcnt++) {
out_8((void *)LED_REG, 0x00); /* LEDs off */
for (delay = 0; delay < 100; delay++)
udelay(1000);
out_8((void *)LED_REG, 0x0f); /* LEDs on */
for (delay = 0; delay < 50; delay++)
udelay(1000);
}
out_8((void *)LED_REG, 0x70);
return 0;
}
/* ------------------------------------------------------------------------- */
#if defined(CONFIG_SYS_EEPROM_WREN)
/* Input: <dev_addr> I2C address of EEPROM device to enable.
* <state> -1: deliver current state
* 0: disable write
* 1: enable write
* Returns: -1: wrong device address
* 0: dis-/en- able done
* 0/1: current state if <state> was -1.
*/
int eeprom_write_enable (unsigned dev_addr, int state)
{
if (CONFIG_SYS_I2C_EEPROM_ADDR != dev_addr) {
return -1;
} else {
switch (state) {
case 1:
/* Enable write access, clear bit GPIO_SINT2. */
out_be32((void *)GPIO0_OR, in_be32((void *)GPIO0_OR) & ~CONFIG_SYS_EEPROM_WP);
state = 0;
break;
case 0:
/* Disable write access, set bit GPIO_SINT2. */
out_be32((void *)GPIO0_OR, in_be32((void *)GPIO0_OR) | CONFIG_SYS_EEPROM_WP);
state = 0;
break;
default:
/* Read current status back. */
state = (0 == (in_be32((void *)GPIO0_OR) & CONFIG_SYS_EEPROM_WP));
break;
}
}
return state;
}
int do_eep_wren (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
int query = argc == 1;
int state = 0;
if (query) {
/* Query write access state. */
state = eeprom_write_enable (CONFIG_SYS_I2C_EEPROM_ADDR, -1);
if (state < 0) {
puts ("Query of write access state failed.\n");
} else {
printf ("Write access for device 0x%0x is %sabled.\n",
CONFIG_SYS_I2C_EEPROM_ADDR, state ? "en" : "dis");
state = 0;
}
} else {
if ('0' == argv[1][0]) {
/* Disable write access. */
state = eeprom_write_enable (CONFIG_SYS_I2C_EEPROM_ADDR, 0);
} else {
/* Enable write access. */
state = eeprom_write_enable (CONFIG_SYS_I2C_EEPROM_ADDR, 1);
}
if (state < 0) {
puts ("Setup of write access state failed.\n");
}
}
return state;
}
U_BOOT_CMD(eepwren, 2, 0, do_eep_wren,
"Enable / disable / query EEPROM write access",
""
);
#endif /* #if defined(CONFIG_SYS_EEPROM_WREN) */
/* ------------------------------------------------------------------------- */
void reset_phy(void)
{
#ifdef CONFIG_LXT971_NO_SLEEP
/*
* Disable sleep mode in LXT971
*/
lxt971_no_sleep();
#endif
}
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