/* * (C) Copyright 2000-2004 * 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 */#if 0#define DEBUG#endif#include <common.h>#include <mpc8xx.h>#include <environment.h>#include <asm/processor.h>#if defined(CONFIG_TQM8xxL) && !defined(CONFIG_TQM866M)# ifndef CFG_OR_TIMING_FLASH_AT_50MHZ#  define CFG_OR_TIMING_FLASH_AT_50MHZ	(OR_ACS_DIV1  | OR_TRLX | OR_CSNT_SAM | \					 OR_SCY_2_CLK | OR_EHTR | OR_BI)# endif#endif /* CONFIG_TQM8xxL/M, !TQM866M */#ifndef	CFG_ENV_ADDR#define CFG_ENV_ADDR	(CFG_FLASH_BASE + CFG_ENV_OFFSET)#endifflash_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_word (flash_info_t *info, ulong dest, ulong data);/*----------------------------------------------------------------------- */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;#ifdef	CFG_OR_TIMING_FLASH_AT_50MHZ	int scy, trlx, flash_or_timing, clk_diff;	DECLARE_GLOBAL_DATA_PTR;	scy = (CFG_OR_TIMING_FLASH_AT_50MHZ & OR_SCY_MSK) >> 4;	if (CFG_OR_TIMING_FLASH_AT_50MHZ & OR_TRLX) {		trlx = OR_TRLX;		scy *= 2;	} else		trlx = 0;		/* We assume that each 10MHz of bus clock require 1-clk SCY		 * adjustment.		 */	clk_diff = (gd->bus_clk / 1000000) - 50;		/* We need proper rounding here. This is what the "+5" and "-5"		 * are here for.		 */	if (clk_diff >= 0)		scy += (clk_diff + 5) / 10;	else		scy += (clk_diff - 5) / 10;		/* For bus frequencies above 50MHz, we want to use relaxed timing		 * (OR_TRLX).		 */	if (gd->bus_clk >= 50000000)		trlx = OR_TRLX;	else		trlx = 0;	if (trlx)		scy /= 2;	if (scy > 0xf)		scy = 0xf;	if (scy < 1)		scy = 1;	flash_or_timing = (scy << 4) | trlx |	                  (CFG_OR_TIMING_FLASH_AT_50MHZ & ~(OR_TRLX | OR_SCY_MSK));#endif	/* 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 */	debug ("\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]);	debug ("## Get flash bank 2 size @ 0x%08x\n",FLASH_BASE1_PRELIM);	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);	}	size_b1 = flash_get_size((vu_long *)FLASH_BASE1_PRELIM, &flash_info[1]);	debug ("## 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);	}	debug  ("## 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 */#ifndef	CFG_OR_TIMING_FLASH_AT_50MHZ	memctl->memc_or0 = CFG_OR_TIMING_FLASH | (-size_b0 & OR_AM_MSK);#else	memctl->memc_or0 = flash_or_timing | (-size_b0 & OR_AM_MSK);#endif	memctl->memc_br0 = (CFG_FLASH_BASE & BR_BA_MSK) | BR_MS_GPCM | BR_V;	debug ("## 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]);#if CFG_MONITOR_BASE >= CFG_FLASH_BASE	/* monitor protection ON by default */	debug ("Protect monitor: %08lx ... %08lx\n",		(ulong)CFG_MONITOR_BASE,		(ulong)CFG_MONITOR_BASE + monitor_flash_len - 1);	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 */# ifdef CFG_ENV_ADDR_REDUND	debug ("Protect primary   environment: %08lx ... %08lx\n",		(ulong)CFG_ENV_ADDR,		(ulong)CFG_ENV_ADDR + CFG_ENV_SECT_SIZE - 1);# else	debug ("Protect environment: %08lx ... %08lx\n",		(ulong)CFG_ENV_ADDR,		(ulong)CFG_ENV_ADDR + CFG_ENV_SECT_SIZE - 1);# endif	flash_protect(FLAG_PROTECT_SET,		      CFG_ENV_ADDR,		      CFG_ENV_ADDR + CFG_ENV_SECT_SIZE - 1,		      &flash_info[0]);#endif#ifdef CFG_ENV_ADDR_REDUND	debug ("Protect redundand environment: %08lx ... %08lx\n",		(ulong)CFG_ENV_ADDR_REDUND,		(ulong)CFG_ENV_ADDR_REDUND + CFG_ENV_SECT_SIZE - 1);	flash_protect(FLAG_PROTECT_SET,		      CFG_ENV_ADDR_REDUND,		      CFG_ENV_ADDR_REDUND + CFG_ENV_SECT_SIZE - 1,		      &flash_info[0]);#endif	if (size_b1) {#ifndef	CFG_OR_TIMING_FLASH_AT_50MHZ		memctl->memc_or1 = CFG_OR_TIMING_FLASH | (-size_b1 & 0xFFFF8000);#else		memctl->memc_or1 = flash_or_timing | (-size_b1 & 0xFFFF8000);#endif		memctl->memc_br1 = ((CFG_FLASH_BASE + size_b0) & BR_BA_MSK) |				    BR_MS_GPCM | BR_V;		debug ("## 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]);#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_SIZE-1,			      &flash_info[1]);#endif	} else {		memctl->memc_br1 = 0;		/* invalidate bank */		flash_info[1].flash_id = FLASH_UNKNOWN;		flash_info[1].sector_count = -1;		flash_info[1].size = 0;		debug ("## DISABLE BR1: 0x%08x    OR1: 0x%08x\n",			memctl->memc_br1, memctl->memc_or1);	}	debug ("## Final Flash bank sizes: %08lx + 0x%08lx\n",size_b0,size_b1);	flash_info[0].size = size_b0;	flash_info[1].size = size_b1;	return (size_b0 + size_b1);}/*----------------------------------------------------------------------- */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) {#ifdef CONFIG_TQM8xxM	/* mirror bit flash */	case FLASH_AMLV128U:	printf ("AM29LV128ML (128Mbit, uniform sector size)\n");				break;	case FLASH_AMLV320U:	printf ("AM29LV320ML (32Mbit, uniform sector size)\n");				break;	case FLASH_AMLV640U:	printf ("AM29LV640ML (64Mbit, uniform sector size)\n");				break;	case FLASH_AMLV320B:	printf ("AM29LV320MB (32Mbit, bottom boot sect)\n");				break;# else	/* ! TQM8xxM */	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_AM320B:	printf ("AM29LV320B (32 Mbit, bottom boot sect)\n");				break;	case FLASH_AM320T:	printf ("AM29LV320T (32 Mbit, top boot sector)\n");				break;#endif	/* TQM8xxM */	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_AMDL163B:	printf ("AM29DL163B (16 Mbit, bottom boot sect)\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");	return;}/*----------------------------------------------------------------------- *//*----------------------------------------------------------------------- *//* * 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];	debug ("Manuf. ID @ 0x%08lx: 0x%08lx\n", (ulong)addr, value);	switch (value) {	case AMD_MANUFACT:		debug ("Manufacturer: AMD\n");		info->flash_id = FLASH_MAN_AMD;		break;	case FUJ_MANUFACT:		debug ("Manufacturer: FUJITSU\n");		info->flash_id = FLASH_MAN_FUJ;		break;	default:		debug ("Manufacturer: *** unknown ***\n");		info->flash_id = FLASH_UNKNOWN;		info->sector_count = 0;		info->size = 0;		return (0);			/* no or unknown flash	*/	}	value = addr[1];			/* device ID		*/	debug ("Device ID @ 0x%08lx: 0x%08lx\n", (ulong)(&addr[1]), value);	switch (value) {#ifdef CONFIG_TQM8xxM	/* mirror bit flash */	case AMD_ID_MIRROR:		debug ("Mirror Bit flash: addr[14] = %08lX  addr[15] = %08lX\n",			addr[14], addr[15]);		/* Special case for AMLV320MH/L */		if ((addr[14] & 0x00ff00ff) == 0x001d001d &&		    (addr[15] & 0x00ff00ff) == 0x00000000) {			debug ("Chip: AMLV320MH/L\n");			info->flash_id += FLASH_AMLV320U;			info->sector_count = 64;			info->size = 0x00800000;	/* => 8 MB */			break;		}		switch(addr[14]) {		case AMD_ID_LV128U_2:			if (addr[15] != AMD_ID_LV128U_3) {				debug ("Chip: AMLV128U -> unknown\n");				info->flash_id = FLASH_UNKNOWN;			} else {				debug ("Chip: AMLV128U\n");				info->flash_id += FLASH_AMLV128U;				info->sector_count = 256;				info->size = 0x02000000;			}			break;				/* => 32 MB	*/		case AMD_ID_LV640U_2:			if (addr[15] != AMD_ID_LV640U_3) {				debug ("Chip: AMLV640U -> unknown\n");				info->flash_id = FLASH_UNKNOWN;			} else {				debug ("Chip: AMLV640U\n");				info->flash_id += FLASH_AMLV640U;				info->sector_count = 128;				info->size = 0x01000000;			}			break;				/* => 16 MB	*/		case AMD_ID_LV320B_2:			if (addr[15] != AMD_ID_LV320B_3) {				debug ("Chip: AMLV320B -> unknown\n");				info->flash_id = FLASH_UNKNOWN;			} else {				debug ("Chip: AMLV320B\n");				info->flash_id += FLASH_AMLV320B;				info->sector_count = 71;				info->size = 0x00800000;			}