u-boot-brain/board/amcc/acadia/acadia.c
Stefan Roese c440bfe6d6 ppc4xx: Add NAND booting support for AMCC Acadia (405EZ) eval board
This patch adds NAND booting support for the AMCC Acadia eval board.

Please make sure to configure jumper J7 to position 2-3 when booting
from NOR, and to position 1-2 when booting for NAND.

I also added a board command to configure the I2C bootstrap EEPROM
values. Right now only 267MHz is support for booting either via NOR
or NAND FLASH. Here the usage:

=> bootstrap 267 nor	;to configure the board for 267MHz NOR booting
=> bootstrap 267 nand	;to configure the board for 267MHz NNAND booting

Signed-off-by: Stefan Roese <sr@denx.de>
2007-06-06 11:42:13 +02:00

117 lines
3.2 KiB
C

/*
* (C) Copyright 2007
* Stefan Roese, DENX Software Engineering, sr@denx.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/processor.h>
extern void board_pll_init_f(void);
static void acadia_gpio_init(void)
{
/*
* GPIO0 setup (select GPIO or alternate function)
*/
out32(GPIO0_OSRL, CFG_GPIO0_OSRL);
out32(GPIO0_OSRH, CFG_GPIO0_OSRH); /* output select */
out32(GPIO0_ISR1L, CFG_GPIO0_ISR1L);
out32(GPIO0_ISR1H, CFG_GPIO0_ISR1H); /* input select */
out32(GPIO0_TSRL, CFG_GPIO0_TSRL);
out32(GPIO0_TSRH, CFG_GPIO0_TSRH); /* three-state select */
out32(GPIO0_TCR, CFG_GPIO0_TCR); /* enable output driver for outputs */
/*
* Ultra (405EZ) was nice enough to add another GPIO controller
*/
out32(GPIO1_OSRH, CFG_GPIO1_OSRH); /* output select */
out32(GPIO1_OSRL, CFG_GPIO1_OSRL);
out32(GPIO1_ISR1H, CFG_GPIO1_ISR1H); /* input select */
out32(GPIO1_ISR1L, CFG_GPIO1_ISR1L);
out32(GPIO1_TSRH, CFG_GPIO1_TSRH); /* three-state select */
out32(GPIO1_TSRL, CFG_GPIO1_TSRL);
out32(GPIO1_TCR, CFG_GPIO1_TCR); /* enable output driver for outputs */
}
int board_early_init_f(void)
{
unsigned int reg;
/* don't reinit PLL when booting via I2C bootstrap option */
mfsdr(SDR_PINSTP, reg);
if (reg != 0xf0000000)
board_pll_init_f();
acadia_gpio_init();
/* Configure 405EZ for NAND usage */
mtsdr(sdrnand0, SDR_NAND0_NDEN | SDR_NAND0_NDAREN | SDR_NAND0_NDRBEN);
mfsdr(sdrultra0, reg);
reg &= ~SDR_ULTRA0_CSN_MASK;
reg |= (SDR_ULTRA0_CSNSEL0 >> CFG_NAND_CS) |
SDR_ULTRA0_NDGPIOBP |
SDR_ULTRA0_EBCRDYEN |
SDR_ULTRA0_NFSRSTEN;
mtsdr(sdrultra0, reg);
/* USB Host core needs this bit set */
mfsdr(sdrultra1, reg);
mtsdr(sdrultra1, reg | SDR_ULTRA1_LEDNENABLE);
mtdcr(uicsr, 0xFFFFFFFF); /* clear all ints */
mtdcr(uicer, 0x00000000); /* disable all ints */
mtdcr(uiccr, 0x00000010);
mtdcr(uicpr, 0xFE7FFFF0); /* set int polarities */
mtdcr(uictr, 0x00000010); /* set int trigger levels */
mtdcr(uicsr, 0xFFFFFFFF); /* clear all ints */
return 0;
}
int misc_init_f(void)
{
/* Set EPLD to take PHY out of reset */
out8(CFG_CPLD_BASE + 0x05, 0x00);
udelay(100000);
return 0;
}
/*
* Check Board Identity:
*/
int checkboard(void)
{
char *s = getenv("serial#");
u8 rev;
rev = in8(CFG_CPLD_BASE + 0);
printf("Board: Acadia - AMCC PPC405EZ Evaluation Board, Rev. %X", rev);
if (s != NULL) {
puts(", serial# ");
puts(s);
}
putc('\n');
return (0);
}