/* * (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);}