/* * (C) Copyright 2000 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. * * 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 *//* * Modified 4/5/2001 * Wait for completion of each sector erase command issued * 4/5/2001 * Chris Hallinan - DS4.COM, Inc. - clh@net1plus.com */#include <common.h>#include <ppc4xx.h>#include <asm/processor.h>flash_info_t flash_info[CFG_MAX_FLASH_BANKS];	/* info for FLASH chips        */#undef DEBUG#ifdef DEBUG#define DEBUGF(x...) printf(x)#else#define DEBUGF(x...)#endif				/* DEBUG *//* * include common flash code (for amcc 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;	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 */	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);	}	/* Only one bank */	if (CFG_MAX_FLASH_BANKS == 1) {		/* Setup offsets */		flash_get_offsets(FLASH_BASE0_PRELIM, &flash_info[0]);		/* Monitor protection ON by default */		(void)flash_protect(FLAG_PROTECT_SET,				    CFG_MONITOR_BASE,				    CFG_MONITOR_BASE + CFG_MONITOR_LEN - 1,				    &flash_info[0]);#ifdef CFG_ENV_IS_IN_FLASH		(void)flash_protect(FLAG_PROTECT_SET, CFG_ENV_ADDR,				    CFG_ENV_ADDR + CFG_ENV_SECT_SIZE - 1,				    &flash_info[0]);		(void)flash_protect(FLAG_PROTECT_SET, CFG_ENV_ADDR_REDUND,				    CFG_ENV_ADDR_REDUND + CFG_ENV_SECT_SIZE - 1,				    &flash_info[0]);#endif		size_b1 = 0;		flash_info[0].size = size_b0;	}	/* 2 banks */	else {		size_b1 =		    flash_get_size((vu_long *) FLASH_BASE1_PRELIM,				   &flash_info[1]);		/* Re-do sizing to get full correct info */		if (size_b1) {			mtdcr(ebccfga, pb0cr);			pbcr = mfdcr(ebccfgd);			mtdcr(ebccfga, pb0cr);			base_b1 = -size_b1;			pbcr = (pbcr & 0x0001ffff) | base_b1 |			    (((size_b1 / 1024 / 1024) - 1) << 17);			mtdcr(ebccfgd, pbcr);			/*          printf("pb1cr = %x\n", pbcr); */		}		if (size_b0) {			mtdcr(ebccfga, pb1cr);			pbcr = mfdcr(ebccfgd);			mtdcr(ebccfga, pb1cr);			base_b0 = base_b1 - size_b0;			pbcr = (pbcr & 0x0001ffff) | base_b0 |			    (((size_b0 / 1024 / 1024) - 1) << 17);			mtdcr(ebccfgd, pbcr);			/*            printf("pb0cr = %x\n", pbcr); */		}		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 */		(void)flash_protect(FLAG_PROTECT_SET,				    base_b0 + size_b0 - CFG_MONITOR_LEN,				    base_b0 + size_b0 - 1, &flash_info[0]);		/* Also protect sector containing initial power-up instruction */		/* (flash_protect() checks address range - other call ignored) */		(void)flash_protect(FLAG_PROTECT_SET,				    0xFFFFFFFC, 0xFFFFFFFF, &flash_info[0]);		(void)flash_protect(FLAG_PROTECT_SET,				    0xFFFFFFFC, 0xFFFFFFFF, &flash_info[1]);		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 */			(void)flash_protect(FLAG_PROTECT_SET,					    base_b1 + size_b1 - CFG_MONITOR_LEN,					    base_b1 + size_b1 - 1,					    &flash_info[1]);			/* monitor protection OFF by default (one is enough) */			(void)flash_protect(FLAG_PROTECT_CLEAR,					    base_b0 + size_b0 - CFG_MONITOR_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;	}			/* else 2 banks */	return (size_b0 + size_b1);}static void flash_get_offsets(ulong base, flash_info_t * info){	int i;	/* set up sector start address table */	if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) ||	    (info->flash_id == FLASH_AM040)) {		for (i = 0; i < info->sector_count; i++)			info->start[i] = base + (i * 0x00010000);	} else {		if (info->flash_id & FLASH_BTYPE) {			/* set sector offsets for bottom boot block type        */			info->start[0] = base + 0x00000000;			info->start[1] = base + 0x00004000;			info->start[2] = base + 0x00006000;			info->start[3] = base + 0x00008000;			for (i = 4; i < info->sector_count; i++) {				info->start[i] =				    base + (i * 0x00010000) - 0x00030000;			}		} else {			/* set sector offsets for top boot block type           */			i = info->sector_count - 1;			info->start[i--] = base + info->size - 0x00004000;			info->start[i--] = base + info->size - 0x00006000;			info->start[i--] = base + info->size - 0x00008000;			for (; i >= 0; i--) {				info->start[i] = base + i * 0x00010000;			}		}	}}