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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)
{
#ifdef __DEBUG_START_FROM_SRAM__
return CONFIG_SYS_DUMMY_FLASH_SIZE;
#else
unsigned long size;
int i;
uint pbcr;
unsigned long base;
int size_val = 0;
debug("[%s, %d] Entering ...\n", __FUNCTION__, __LINE__);
debug("[%s, %d] flash_info = 0x%08X ...\n", __FUNCTION__, __LINE__, flash_info);
/* Init: no FLASHes known */
for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
flash_info[i].flash_id = FLASH_UNKNOWN;
}
/* Static FLASH Bank configuration here - FIXME XXX */
debug("[%s, %d] Calling flash_get_size ...\n", __FUNCTION__, __LINE__);
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);
}
debug("[%s, %d] Test point ...\n", __FUNCTION__, __LINE__);
/* Setup offsets */
flash_get_offsets (-size, &flash_info[0]);
debug("[%s, %d] Test point ...\n", __FUNCTION__, __LINE__);
/* Re-do sizing to get full correct info */
mtdcr(EBC0_CFGADDR, PB0CR);
pbcr = mfdcr(EBC0_CFGDATA);
mtdcr(EBC0_CFGADDR, PB0CR);
base = -size;
switch (size) {
case 1 << 20:
size_val = 0;
break;
case 2 << 20:
size_val = 1;
break;
case 4 << 20:
size_val = 2;
break;
case 8 << 20:
size_val = 3;
break;
case 16 << 20:
size_val = 4;
break;
}
pbcr = (pbcr & 0x0001ffff) | base | (size_val << 17);
mtdcr(EBC0_CFGDATA, pbcr);
debug("[%s, %d] Test point ...\n", __FUNCTION__, __LINE__);
/* Monitor protection ON by default */
(void)flash_protect(FLAG_PROTECT_SET,
-CONFIG_SYS_MONITOR_LEN,
0xffffffff,
&flash_info[0]);
debug("[%s, %d] Test point ...\n", __FUNCTION__, __LINE__);
flash_info[0].size = size;
return (size);
#endif
}
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