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/*
* (C) Copyright 2006
* 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/arch/ixp425.h>
#if !defined(CONFIG_FLASH_CFI_DRIVER)
/*
* include common flash code (for esd boards)
*/
#include "../common/flash.c"
/*
* Prototypes
*/
static ulong flash_get_size (vu_long * addr, flash_info_t * info);
static inline ulong ld(ulong x)
{
ulong k = 0;
while (x >>= 1)
++k;
return k;
}
unsigned long flash_init(void)
{
unsigned long size;
int i;
/* Init: no FLASHes known */
for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; i++)
flash_info[i].flash_id = FLASH_UNKNOWN;
size = flash_get_size((vu_long *)FLASH_BASE0_PRELIM, &flash_info[0]);
if (flash_info[0].flash_id == FLASH_UNKNOWN)
printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
size, size<<20);
/* Reconfigure CS0 to actual FLASH size */
*IXP425_EXP_CS0 = (*IXP425_EXP_CS0 & ~0x00003C00) | ((ld(size) - 9) << 10);
/* Monitor protection ON by default */
flash_protect(FLAG_PROTECT_SET,
CONFIG_SYS_MONITOR_BASE, CONFIG_SYS_MONITOR_BASE + monitor_flash_len - 1,
&flash_info[CONFIG_SYS_MAX_FLASH_BANKS - 1]);
/* Environment protection ON by default */
flash_protect(FLAG_PROTECT_SET,
CONFIG_ENV_ADDR,
CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1,
&flash_info[CONFIG_SYS_MAX_FLASH_BANKS - 1]);
/* Redundant environment protection ON by default */
flash_protect(FLAG_PROTECT_SET,
CONFIG_ENV_ADDR_REDUND,
CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SIZE_REDUND - 1,
&flash_info[CONFIG_SYS_MAX_FLASH_BANKS - 1]);
flash_info[0].size = size;
return size;
}
#endif /* CONFIG_FLASH_CFI_DRIVER */
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