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/*
* (C) Copyright 2001
* Stefan Roese, esd gmbh germany, stefan.roese@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 <ppc4xx.h>
#include <asm/processor.h>
/*
* include common flash code (for esd boards)
*/
#include "../common/flash.c"
/*-----------------------------------------------------------------------
* Functions
*/
static ulong flash_get_size (vu_long *addr, flash_info_t *info);
static void flash_get_offsets (ulong base, flash_info_t *info);
/*-----------------------------------------------------------------------
*/
unsigned long flash_init (void)
{
unsigned long size_b0, size_b1;
int i;
/* Init: no FLASHes known */
for (i=0; i<CFG_MAX_FLASH_BANKS; ++i) {
flash_info[i].flash_id = FLASH_UNKNOWN;
}
size_b0 = 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_b0, size_b0<<20);
}
size_b1 = flash_get_size((vu_long *)FLASH_BASE1_PRELIM, &flash_info[1]);
if (size_b1 > size_b0) {
printf ("## ERROR: "
"Bank 1 (0x%08lx = %ld MB) > Bank 0 (0x%08lx = %ld MB)\n",
size_b1, size_b1<<20,
size_b0, size_b0<<20
);
flash_info[0].flash_id = FLASH_UNKNOWN;
flash_info[1].flash_id = FLASH_UNKNOWN;
flash_info[0].sector_count = -1;
flash_info[1].sector_count = -1;
flash_info[0].size = 0;
flash_info[1].size = 0;
return (0);
}
/* Re-do sizing to get full correct info */
size_b0 = flash_get_size((vu_long *)FLASH_BASE0_PRELIM, &flash_info[0]);
flash_get_offsets (FLASH_BASE0_PRELIM, &flash_info[0]);
/* monitor protection ON by default */
flash_protect(FLAG_PROTECT_SET,
FLASH_BASE0_PRELIM+size_b0-CFG_MONITOR_LEN,
FLASH_BASE0_PRELIM+size_b0-1,
&flash_info[0]);
if (size_b1) {
/* Re-do sizing to get full correct info */
size_b1 = flash_get_size((vu_long *)(FLASH_BASE0_PRELIM + size_b0),
&flash_info[1]);
flash_get_offsets (FLASH_BASE0_PRELIM + size_b0, &flash_info[1]);
/* monitor protection ON by default */
flash_protect(FLAG_PROTECT_SET,
FLASH_BASE0_PRELIM+size_b0+size_b1-CFG_MONITOR_LEN,
FLASH_BASE0_PRELIM+size_b0+size_b1-1,
&flash_info[1]);
/* monitor protection OFF by default (one is enough) */
flash_protect(FLAG_PROTECT_CLEAR,
FLASH_BASE0_PRELIM+size_b0-CFG_MONITOR_LEN,
FLASH_BASE0_PRELIM+size_b0-1,
&flash_info[0]);
} else {
flash_info[1].flash_id = FLASH_UNKNOWN;
flash_info[1].sector_count = -1;
}
flash_info[0].size = size_b0;
flash_info[1].size = size_b1;
return (size_b0 + size_b1);
}
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