/* * (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>#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/*---------------------------------------------------------------------*/flash_info_t	flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips	*//*----------------------------------------------------------------------- * Functions */static ulong flash_get_size (vu_long *addr, flash_info_t *info);static int write_data (flash_info_t *info, ulong dest, ulong data);static void flash_get_offsets (ulong base, flash_info_t *info);/*----------------------------------------------------------------------- * * The PCU E uses an address map where flash banks are aligned top * down, so that the "first" flash bank ends at top of memory, and * the monitor entry point is at address (0xFFF00100). The second * flash bank is mapped immediately below bank 0. * * This is NOT in conformance to the "official" memory map! * */#define PCU_MONITOR_BASE   ( (flash_info[0].start[0] + flash_info[0].size - 1) \			   - (0xFFFFFFFF - CFG_MONITOR_BASE) )/*----------------------------------------------------------------------- */unsigned long flash_init (void){	volatile immap_t     *immap  = (immap_t *)CFG_IMMR;	volatile memctl8xx_t *memctl = &immap->im_memctl;	unsigned long base, 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 */	/*	 * Warning:	 *	 * Since the PCU E memory map assigns flash banks top down,	 * we swap the numbering later if both banks are equipped,	 * so they look like a contiguous area of memory.	 */	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);	}	DEBUGF("## Get flash bank 2 size @ 0x%08x\n",FLASH_BASE6_PRELIM);	size_b1 = flash_get_size((vu_long *)FLASH_BASE6_PRELIM, &flash_info[1]);	DEBUGF("## Prelim. Flash bank sizes: %08lx + 0x%08lx\n", size_b0, size_b1);	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);	}	DEBUGF ("## Before remap: "		"BR0: 0x%08x    OR0: 0x%08x    "		"BR6: 0x%08x    OR6: 0x%08x\n",		memctl->memc_br0, memctl->memc_or0,		memctl->memc_br6, memctl->memc_or6);	/* Remap FLASH according to real size */	base = 0 - size_b0;	memctl->memc_or0 = CFG_OR_TIMING_FLASH | (-size_b0 & 0xFFFF8000);	memctl->memc_br0 = (base & BR_BA_MSK) | BR_PS_16 | 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 *)base, &flash_info[0]);	base = 0 - size_b0;	flash_info[0].size = size_b0;	flash_get_offsets (base, &flash_info[0]);	/* monitor protection ON by default */	flash_protect(FLAG_PROTECT_SET,		      PCU_MONITOR_BASE,		      PCU_MONITOR_BASE+monitor_flash_len-1,		      &flash_info[0]);#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) {		flash_info_t tmp_info;		memctl->memc_or6 = CFG_OR_TIMING_FLASH | (-size_b1 & 0xFFFF8000);		memctl->memc_br6 = ((base - size_b1) & BR_BA_MSK) |				    BR_PS_16 | BR_MS_GPCM | BR_V;		DEBUGF("## New BR6: 0x%08x    OR6: 0x%08x\n",			memctl->memc_br6, memctl->memc_or6);		/* Re-do sizing to get full correct info */		size_b1 = flash_get_size((vu_long *)(base - size_b1),					  &flash_info[1]);		base -= size_b1;		flash_get_offsets (base, &flash_info[1]);		flash_info[1].size = size_b1;#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		/*		 * Swap bank numbers so that addresses are in ascending order		 */		tmp_info = flash_info[0];		flash_info[0] = flash_info[1];		flash_info[1] = tmp_info;	} else {		memctl->memc_br1 = 0;		/* invalidate bank */		flash_info[1].flash_id = FLASH_UNKNOWN;		flash_info[1].sector_count = -1;	}	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;	short n;	if (info->flash_id == FLASH_UNKNOWN) {		return;	}	if ((info->flash_id & FLASH_VENDMASK) != FLASH_MAN_AMD) {		return;	}	switch (info->flash_id & FLASH_TYPEMASK) {	case FLASH_AMDL322T:	case FLASH_AMDL323T:	case FLASH_AMDL324T:		/* set sector offsets for top boot block type		*/		base += info->size;		i = info->sector_count;		for (n=0; n<8; ++n) {		/*  8 x 8k boot sectors	*/			base -= 8 << 10;			--i;			info->start[i] = base;		}		while (i > 0) {			/* 64k regular sectors	*/			base -= 64 << 10;			--i;			info->start[i] = base;		}		return;	case FLASH_AMDL322B:	case FLASH_AMDL323B:	case FLASH_AMDL324B:		/* set sector offsets for bottom boot block type	*/		for (i=0; i<8; ++i) {		/*  8 x 8k boot sectors	*/			info->start[i] = base;			base += 8 << 10;		}		while (base < info->size) {	/* 64k regular sectors	*/			info->start[i] = base;			base += 64 << 10;			++i;		}		return;	case FLASH_AMDL640:		/* set sector offsets for dual boot block type		*/		for (i=0; i<8; ++i) {		/*  8 x 8k boot sectors	*/			info->start[i] = base;			base += 8 << 10;		}		n = info->sector_count - 8;		while (i < n) {			/* 64k regular sectors	*/			info->start[i] = base;			base += 64 << 10;			++i;		}		while (i < info->sector_count) { /* 8 x 8k boot sectors	*/			info->start[i] = base;			base += 8 << 10;			++i;		}		return;	default:		return;	}	/* NOTREACHED */}/*----------------------------------------------------------------------- */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;	default:		printf ("Unknown Vendor ");	break;	}	switch (info->flash_id & FLASH_TYPEMASK) {	case FLASH_AMDL322B:	printf ("AM29DL322B (32 Mbit, bottom boot sect)\n");				break;	case FLASH_AMDL322T:	printf ("AM29DL322T (32 Mbit, top boot sector)\n");				break;	case FLASH_AMDL323B:	printf ("AM29DL323B (32 Mbit, bottom boot sect)\n");				break;	case FLASH_AMDL323T:	printf ("AM29DL323T (32 Mbit, top boot sector)\n");				break;	case FLASH_AMDL324B:	printf ("AM29DL324B (32 Mbit, bottom boot sect)\n");				break;	case FLASH_AMDL324T:	printf ("AM29DL324T (32 Mbit, top boot sector)\n");				break;	case FLASH_AMDL640:	printf ("AM29DL640D (64 Mbit, dual boot sector)\n");				break;	default:		printf ("Unknown Chip Type 0x%lX\n",					info->flash_id);				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");	return;}/*----------------------------------------------------------------------- *//*----------------------------------------------------------------------- *//* * The following code cannot be run from FLASH! */static ulong flash_get_size (vu_long *addr, flash_info_t *info){	short i;	ushort value;	vu_short *saddr = (vu_short *)addr;	/* Write auto select command: read Manufacturer ID */	saddr[0x0555] = 0x00AA;	saddr[0x02AA] = 0x0055;