/* * (C) Copyright 2001 * 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 */#include <common.h>#include <mpc8xx.h>flash_info_t	flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips	*/#if defined(CFG_ENV_IS_IN_FLASH)# ifndef  CFG_ENV_ADDR#  define CFG_ENV_ADDR	(CFG_FLASH_BASE + CFG_ENV_OFFSET)# endif# ifndef  CFG_ENV_SIZE#  define CFG_ENV_SIZE	CFG_ENV_SECT_SIZE# endif# ifndef  CFG_ENV_SECT_SIZE#  define CFG_ENV_SECT_SIZE  CFG_ENV_SIZE# endif#endif/*---------------------------------------------------------------------*/#undef DEBUG_FLASH#ifdef DEBUG_FLASH#define DEBUGF(fmt,args...) printf(fmt ,##args)#else#define DEBUGF(fmt,args...)#endif/*---------------------------------------------------------------------*//*----------------------------------------------------------------------- * Functions */static ulong flash_get_size (vu_long *addr, flash_info_t *info);static int write_word (flash_info_t *info, ulong dest, ulong data);static void flash_get_offsets (ulong base, flash_info_t *info);/*----------------------------------------------------------------------- */unsigned long flash_init (void){	volatile immap_t     *immap  = (immap_t *)CFG_IMMR;	volatile memctl8xx_t *memctl = &immap->im_memctl;	unsigned long size_b0, size_b1;	int i;	/* 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 */	DEBUGF("\n## Get flash bank 1 size @ 0x%08x\n",FLASH_BASE0_PRELIM);	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);	}#if defined(FLASH_BASE1_PRELIM) && (FLASH_BASE1_PRELIM != 0)	DEBUGF("## Get flash bank 2 size @ 0x%08x\n",FLASH_BASE1_PRELIM);	size_b1 = flash_get_size((vu_long *)FLASH_BASE1_PRELIM, &flash_info[1]);	if (size_b1 > size_b0) {		printf ("## ERROR: "			"Bank 1 (0x%08lx = %ld MB) > Bank 0 (0x%08lx = %ld MB)\n",			size_b1, size_b1<<20,			size_b0, size_b0<<20		);		flash_info[0].flash_id	= FLASH_UNKNOWN;		flash_info[1].flash_id	= FLASH_UNKNOWN;		flash_info[0].sector_count	= -1;		flash_info[1].sector_count	= -1;		flash_info[0].size		= 0;		flash_info[1].size		= 0;		return (0);	}#else	size_b1 = 0;#endif	/* FLASH_BASE1_PRELIM */	DEBUGF("## Prelim. Flash bank sizes: %08lx + 0x%08lx\n",size_b0,size_b1);	DEBUGF ("## Before remap: "		"BR0: 0x%08x    OR0: 0x%08x    "		"BR1: 0x%08x    OR1: 0x%08x\n",		memctl->memc_br0, memctl->memc_or0,		memctl->memc_br1, memctl->memc_or1);	/* Remap FLASH according to real size */	memctl->memc_or0 = CFG_OR_TIMING_FLASH | (-size_b0 & OR_AM_MSK);	memctl->memc_br0 = (CFG_FLASH_BASE & BR_BA_MSK) | BR_MS_GPCM | BR_V;	DEBUGF("## BR0: 0x%08x    OR0: 0x%08x\n",		memctl->memc_br0, memctl->memc_or0);	/* Re-do sizing to get full correct info */	size_b0 = flash_get_size((vu_long *)CFG_FLASH_BASE, &flash_info[0]);	flash_get_offsets (CFG_FLASH_BASE, &flash_info[0]);	flash_info[0].size = size_b0;#if CFG_MONITOR_BASE >= CFG_FLASH_BASE	/* monitor protection ON by default */	flash_protect(FLAG_PROTECT_SET,		      CFG_MONITOR_BASE,		      CFG_MONITOR_BASE+monitor_flash_len-1,		      &flash_info[0]);#endif#ifdef	CFG_ENV_IS_IN_FLASH	/* ENV protection ON by default */	flash_protect(FLAG_PROTECT_SET,		      CFG_ENV_ADDR,		      CFG_ENV_ADDR+CFG_ENV_SECT_SIZE-1,		      &flash_info[0]);#endif	if (size_b1) {		memctl->memc_or1 = CFG_OR_TIMING_FLASH | (-size_b1 & OR_AM_MSK);		memctl->memc_br1 = ((CFG_FLASH_BASE + size_b0) & BR_BA_MSK) |				   BR_MS_GPCM | BR_V;		DEBUGF("## BR1: 0x%08x    OR1: 0x%08x\n",			memctl->memc_br1, memctl->memc_or1);		/* Re-do sizing to get full correct info */		size_b1 = flash_get_size((vu_long *)(CFG_FLASH_BASE + size_b0),					  &flash_info[1]);		flash_info[1].size = size_b1;		flash_get_offsets (CFG_FLASH_BASE + size_b0, &flash_info[1]);# if CFG_MONITOR_BASE >= CFG_FLASH_BASE		/* monitor protection ON by default */		flash_protect(FLAG_PROTECT_SET,			      CFG_MONITOR_BASE,			      CFG_MONITOR_BASE+monitor_flash_len-1,			      &flash_info[1]);# endif# ifdef CFG_ENV_IS_IN_FLASH		/* ENV protection ON by default */		flash_protect(FLAG_PROTECT_SET,			      CFG_ENV_ADDR,			      CFG_ENV_ADDR+CFG_ENV_SECT_SIZE-1,			      &flash_info[1]);#endif	} else {#ifndef CONFIG_AMX_RAM_EXT		memctl->memc_br1 = 0;		/* invalidate bank */		memctl->memc_or1 = 0;		/* invalidate bank */#endif		DEBUGF("## DISABLE BR1: 0x%08x    OR1: 0x%08x\n",			memctl->memc_br1, memctl->memc_or1);		flash_info[1].flash_id = FLASH_UNKNOWN;		flash_info[1].sector_count = -1;		flash_info[1].size = 0;	}	DEBUGF("## Final Flash bank sizes: %08lx + 0x%08lx\n",size_b0,size_b1);	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_TYPEMASK) == FLASH_AM040) {		/* set sector offsets for uniform sector type	*/		for (i = 0; i < info->sector_count; i++) {			info->start[i] = base + (i * 0x00040000);		}	} else if (info->flash_id & FLASH_BTYPE) {		/* set sector offsets for bottom boot block type	*/		info->start[0] = base + 0x00000000;		info->start[1] = base + 0x00008000;		info->start[2] = base + 0x0000C000;		info->start[3] = base + 0x00010000;		for (i = 4; i < info->sector_count; i++) {			info->start[i] = base + (i * 0x00020000) - 0x00060000;		}	} else {		/* set sector offsets for top boot block type		*/		i = info->sector_count - 1;		info->start[i--] = base + info->size - 0x00008000;		info->start[i--] = base + info->size - 0x0000C000;		info->start[i--] = base + info->size - 0x00010000;		for (; i >= 0; i--) {			info->start[i] = base + i * 0x00020000;		}	}}/*----------------------------------------------------------------------- */void flash_print_info  (flash_info_t *info){	int i;	if (info->flash_id == FLASH_UNKNOWN) {		printf ("missing or unknown FLASH type\n");		return;	}	switch (info->flash_id & FLASH_VENDMASK) {	case FLASH_MAN_AMD:	printf ("AMD ");		break;	case FLASH_MAN_FUJ:	printf ("FUJITSU ");		break;	case FLASH_MAN_BM:	printf ("BRIGHT MICRO ");	break;	default:		printf ("Unknown Vendor ");	break;	}	switch (info->flash_id & FLASH_TYPEMASK) {	case FLASH_AM040:	printf ("29F040 or 29LV040 (4 Mbit, uniform sectors)\n");				break;	case FLASH_AM400B:	printf ("AM29LV400B (4 Mbit, bottom boot sect)\n");				break;	case FLASH_AM400T:	printf ("AM29LV400T (4 Mbit, top boot sector)\n");				break;	case FLASH_AM800B:	printf ("AM29LV800B (8 Mbit, bottom boot sect)\n");				break;	case FLASH_AM800T:	printf ("AM29LV800T (8 Mbit, top boot sector)\n");				break;	case FLASH_AM160B:	printf ("AM29LV160B (16 Mbit, bottom boot sect)\n");				break;	case FLASH_AM160T:	printf ("AM29LV160T (16 Mbit, top boot sector)\n");				break;	case FLASH_AM320B:	printf ("AM29LV320B (32 Mbit, bottom boot sect)\n");				break;	case FLASH_AM320T:	printf ("AM29LV320T (32 Mbit, top boot sector)\n");				break;	default:		printf ("Unknown Chip Type\n");				break;	}	printf ("  Size: %ld MB in %d Sectors\n",		info->size >> 20, info->sector_count);	printf ("  Sector Start Addresses:");	for (i=0; i<info->sector_count; ++i) {		if ((i % 5) == 0)			printf ("\n   ");		printf (" %08lX%s",			info->start[i],			info->protect[i] ? " (RO)" : "     "		);	}	printf ("\n");}/*----------------------------------------------------------------------- *//*----------------------------------------------------------------------- *//* * The following code cannot be run from FLASH! */static ulong flash_get_size (vu_long *addr, flash_info_t *info){	short i;	ulong value;	ulong base = (ulong)addr;	/* Write auto select command: read Manufacturer ID */	addr[0x0555] = 0x00AA00AA;	addr[0x02AA] = 0x00550055;	addr[0x0555] = 0x00900090;	value = addr[0];	DEBUGF("Manuf. ID @ 0x%08lx: 0x%08lx\n", (ulong)addr, value);	switch (value) {	case AMD_MANUFACT:		info->flash_id = FLASH_MAN_AMD;		break;	case FUJ_MANUFACT:		info->flash_id = FLASH_MAN_FUJ;		break;	default:		info->flash_id = FLASH_UNKNOWN;		info->sector_count = 0;