u-boot/board/altera/nios2-generic/nios2-generic.c
Thomas Chou 030103d780 nios2: reset cfi flash before reading env
Flash might be in unknown state when u-boot is started with jtag.
And got wrong env data. So reset it in board early init.

We cannot use generic cfi flash routines, because flash_init() is
not run yet.

Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
2011-04-08 09:02:27 -04:00

84 lines
2.2 KiB
C

/*
* (C) Copyright 2005, Psyent Corporation <www.psyent.com>
* Scott McNutt <smcnutt@psyent.com>
* (C) Copyright 2010, Thomas Chou <thomas@wytron.com.tw>
*
* 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 <netdev.h>
#include <mtd/cfi_flash.h>
#include <asm/io.h>
void text_base_hook(void); /* nop hook for text_base.S */
#if defined(CONFIG_ENV_IS_IN_FLASH) && defined(CONFIG_ENV_ADDR)
static void __early_flash_cmd_reset(void)
{
/* reset flash before we read env */
writeb(AMD_CMD_RESET, CONFIG_ENV_ADDR);
writeb(FLASH_CMD_RESET, CONFIG_ENV_ADDR);
}
void early_flash_cmd_reset(void)
__attribute__((weak,alias("__early_flash_cmd_reset")));
#endif
int board_early_init_f(void)
{
text_base_hook();
#if defined(CONFIG_ENV_IS_IN_FLASH) && defined(CONFIG_ENV_ADDR)
early_flash_cmd_reset();
#endif
return 0;
}
int checkboard(void)
{
printf("BOARD : %s\n", CONFIG_BOARD_NAME);
return 0;
}
phys_size_t initdram(int board_type)
{
return 0;
}
#ifdef CONFIG_CMD_NET
int board_eth_init(bd_t *bis)
{
int rc = 0;
#ifdef CONFIG_SMC91111
rc += smc91111_initialize(0, CONFIG_SMC91111_BASE);
#endif
#ifdef CONFIG_DRIVER_DM9000
rc += dm9000_initialize(bis);
#endif
#ifdef CONFIG_ALTERA_TSE
rc += altera_tse_initialize(0,
CONFIG_SYS_ALTERA_TSE_MAC_BASE,
CONFIG_SYS_ALTERA_TSE_SGDMA_RX_BASE,
CONFIG_SYS_ALTERA_TSE_SGDMA_TX_BASE);
#endif
#ifdef CONFIG_ETHOC
rc += ethoc_initialize(0, CONFIG_SYS_ETHOC_BASE);
#endif
return rc;
}
#endif