mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-16 17:58:23 +00:00
3b57fe0a70
instead CFG_MONITOR_LEN is now only used to determine _at_compile_ _time_ (!) if the environment is embedded within the U-Boot image, or in a separate flash sector. * Cleanup CFG_DER #defines in config files (wd maintained only)
154 lines
4 KiB
C
154 lines
4 KiB
C
/*
|
|
* (C) Copyright 2001-2003
|
|
* 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 calc_size(unsigned long size)
|
|
{
|
|
switch (size) {
|
|
case 1 << 20:
|
|
return 0;
|
|
case 2 << 20:
|
|
return 1;
|
|
case 4 << 20:
|
|
return 2;
|
|
case 8 << 20:
|
|
return 3;
|
|
case 16 << 20:
|
|
return 4;
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
|
|
unsigned long flash_init (void)
|
|
{
|
|
unsigned long size_b0, size_b1;
|
|
int i;
|
|
uint pbcr;
|
|
unsigned long base_b0, base_b1;
|
|
|
|
/* 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 */
|
|
|
|
base_b0 = FLASH_BASE0_PRELIM;
|
|
size_b0 = flash_get_size ((vu_long *) base_b0, &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);
|
|
}
|
|
|
|
base_b1 = FLASH_BASE1_PRELIM;
|
|
size_b1 = flash_get_size ((vu_long *) base_b1, &flash_info[1]);
|
|
|
|
/* Re-do sizing to get full correct info */
|
|
|
|
if (size_b1) {
|
|
if (size_b1 < (1 << 20)) {
|
|
/* minimum CS size on PPC405GP is 1MB !!! */
|
|
size_b1 = 1 << 20;
|
|
}
|
|
base_b1 = -size_b1;
|
|
mtdcr (ebccfga, pb0cr);
|
|
pbcr = mfdcr (ebccfgd);
|
|
mtdcr (ebccfga, pb0cr);
|
|
pbcr = (pbcr & 0x0001ffff) | base_b1 | (calc_size(size_b1) << 17);
|
|
mtdcr (ebccfgd, pbcr);
|
|
#if 0 /* test-only */
|
|
printf("size_b1=%x base_b1=%x pb1cr = %x\n",
|
|
size_b1, base_b1, pbcr); /* test-only */
|
|
#endif
|
|
}
|
|
|
|
if (size_b0) {
|
|
if (size_b0 < (1 << 20)) {
|
|
/* minimum CS size on PPC405GP is 1MB !!! */
|
|
size_b0 = 1 << 20;
|
|
}
|
|
base_b0 = base_b1 - size_b0;
|
|
mtdcr (ebccfga, pb1cr);
|
|
pbcr = mfdcr (ebccfgd);
|
|
mtdcr (ebccfga, pb1cr);
|
|
pbcr = (pbcr & 0x0001ffff) | base_b0 | (calc_size(size_b0) << 17);
|
|
mtdcr (ebccfgd, pbcr);
|
|
#if 0 /* test-only */
|
|
printf("size_b0=%x base_b0=%x pb0cr = %x\n",
|
|
size_b0, base_b0, pbcr); /* test-only */
|
|
#endif
|
|
}
|
|
|
|
size_b0 = flash_get_size ((vu_long *) base_b0, &flash_info[0]);
|
|
|
|
flash_get_offsets (base_b0, &flash_info[0]);
|
|
|
|
/* monitor protection ON by default */
|
|
flash_protect (FLAG_PROTECT_SET,
|
|
base_b0 + size_b0 - monitor_flash_len,
|
|
base_b0 + size_b0 - 1, &flash_info[0]);
|
|
|
|
if (size_b1) {
|
|
/* Re-do sizing to get full correct info */
|
|
size_b1 = flash_get_size ((vu_long *) base_b1, &flash_info[1]);
|
|
|
|
flash_get_offsets (base_b1, &flash_info[1]);
|
|
|
|
/* monitor protection ON by default */
|
|
flash_protect (FLAG_PROTECT_SET,
|
|
base_b1 + size_b1 - monitor_flash_len,
|
|
base_b1 + size_b1 - 1, &flash_info[1]);
|
|
/* monitor protection OFF by default (one is enough) */
|
|
flash_protect (FLAG_PROTECT_CLEAR,
|
|
base_b0 + size_b0 - monitor_flash_len,
|
|
base_b0 + 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);
|
|
}
|