mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-23 11:33:32 +00:00
102 lines
2.5 KiB
C
102 lines
2.5 KiB
C
|
/*
|
||
|
|
* (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;
|
||
|
|
int i;
|
||
|
|
uint pbcr;
|
||
|
|
unsigned long base_b0;
|
||
|
|
int size_val = 0;
|
||
|
|
|
||
|
|
/* Init: no FLASHes known */
|
||
|
|
for (i=0; i<CFG_MAX_FLASH_BANKS; ++i) {
|
||
|
|
flash_info[i].flash_id = FLASH_UNKNOWN;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Static FLASH Bank configuration here - FIXME XXX */
|
||
|
|
|
||
|
|
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);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Setup offsets */
|
||
|
|
flash_get_offsets (-size_b0, &flash_info[0]);
|
||
|
|
|
||
|
|
/* Re-do sizing to get full correct info */
|
||
|
|
mtdcr(ebccfga, pb0cr);
|
||
|
|
pbcr = mfdcr(ebccfgd);
|
||
|
|
mtdcr(ebccfga, pb0cr);
|
||
|
|
base_b0 = -size_b0;
|
||
|
|
switch (size_b0) {
|
||
|
|
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_b0 | (size_val << 17);
|
||
|
|
mtdcr(ebccfgd, pbcr);
|
||
|
|
|
||
|
|
/* Monitor protection ON by default */
|
||
|
|
(void)flash_protect(FLAG_PROTECT_SET,
|
||
|
|
-CFG_MONITOR_LEN,
|
||
|
|
0xffffffff,
|
||
|
|
&flash_info[0]);
|
||
|
|
|
||
|
|
flash_info[0].size = size_b0;
|
||
|
|
|
||
|
|
return (size_b0);
|
||
|
|
}
|