/* * (C) Copyright 2000, 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 *//* * Modified 4/5/2001 * Wait for completion of each sector erase command issued * 4/5/2001 * Chris Hallinan - DS4.COM, Inc. - clh@net1plus.com *//* * Modified 3/7/2001 * - adapted for pip405, Denis Peter, MPL AG Switzerland * TODO: * clean-up */#include <common.h>#if !defined(CONFIG_PATI)#include <ppc4xx.h>#include <asm/processor.h>#include "common_util.h"#if defined(CONFIG_MIP405)#include "../mip405/mip405.h"#endif#if defined(CONFIG_PIP405)#include "../pip405/pip405.h"#endif#include <405gp_pci.h>#else /* defined(CONFIG_PATI) */#include <mpc5xx.h>#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);void unlock_intel_sectors(flash_info_t *info,ulong addr,ulong cnt);#define ADDR0           0x5555#define ADDR1           0x2aaa#define FLASH_WORD_SIZE unsigned short#define FALSE           0#define TRUE            1#if !defined(CONFIG_PATI)/*----------------------------------------------------------------------- * Some CS switching routines: * * On PIP/MIP405 we have 3 (4) possible boot mode * * - Boot from Flash (Flash CS = CS0, MPS CS = CS1) * - Boot from MPS   (Flash CS = CS1, MPS CS = CS0) * - Boot from PCI with Flash map (Flash CS = CS0, MPS CS = CS1) * - Boot from PCI with MPS map   (Flash CS = CS1, MPS CS = CS0) * The flash init is the first board specific routine which is called * after code relocation (running from SDRAM) * The first thing we do is to map the Flash CS to the Flash area and * the MPS CS to the MPS area. Since the flash size is unknown at this * point, we use the max flash size and the lowest flash address as base. * * After flash detection we adjust the size of the CS area accordingly. * The board_init_r will fill in wrong values in the board init structure, * but this will be fixed in the misc_init_r routine: * bd->bi_flashstart=0-flash_info[0].size * bd->bi_flashsize=flash_info[0].size-CFG_MONITOR_LEN * bd->bi_flashoffset=0 * */int get_boot_mode(void){	unsigned long pbcr;	int res = 0;	pbcr = mfdcr (strap);	if ((pbcr & PSR_ROM_WIDTH_MASK) == 0)		/* boot via MPS or MPS mapping */		res = BOOT_MPS;	if(pbcr & PSR_ROM_LOC)		/* boot via PCI.. */		res |= BOOT_PCI;	 return res;}/* Map the flash high (in boot area)   This code can only be executed from SDRAM (after relocation).*/void setup_cs_reloc(void){	int mode;	/* Since we are relocated, we can set-up the CS finaly	 * but first of all, switch off PCI mapping (in case it was a PCI boot) */	out32r(PMM0MA,0L);	icache_enable (); /* we are relocated */	/* get boot mode */	mode=get_boot_mode();	/* we map the flash high in every case */	/* first findout on which cs the flash is */	if(mode & BOOT_MPS) {		/* map flash high on CS1 and MPS on CS0 */		mtdcr (ebccfga, pb0ap);		mtdcr (ebccfgd, MPS_AP);		mtdcr (ebccfga, pb0cr);		mtdcr (ebccfgd, MPS_CR);		/* we use the default values (max values) for the flash		 * because its real size is not yet known */		mtdcr (ebccfga, pb1ap);		mtdcr (ebccfgd, FLASH_AP);		mtdcr (ebccfga, pb1cr);		mtdcr (ebccfgd, FLASH_CR_B);	}	else {		/* map flash high on CS0 and MPS on CS1 */		mtdcr (ebccfga, pb1ap);		mtdcr (ebccfgd, MPS_AP);		mtdcr (ebccfga, pb1cr);		mtdcr (ebccfgd, MPS_CR);		/* we use the default values (max values) for the flash		 * because its real size is not yet known */		mtdcr (ebccfga, pb0ap);		mtdcr (ebccfgd, FLASH_AP);		mtdcr (ebccfga, pb0cr);		mtdcr (ebccfgd, FLASH_CR_B);	}}#endif /* #if !defined(CONFIG_PATI) */unsigned long flash_init (void){	unsigned long size_b0;	int i;#if !defined(CONFIG_PATI)	unsigned long size_b1,flashcr,size_reg;	int mode;	extern char version_string;	char *p=&version_string;	/* Since we are relocated, we can set-up the CS finally */	setup_cs_reloc();	/* get and display boot mode */	mode=get_boot_mode();	if(mode & BOOT_PCI)		printf("(PCI Boot %s Map) ",(mode & BOOT_MPS) ?			"MPS" : "Flash");	else		printf("(%s Boot) ",(mode & BOOT_MPS) ?			"MPS" : "Flash");#endif /* #if !defined(CONFIG_PATI) */	/* 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 *)CFG_MONITOR_BASE, &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);	}	/* protect the bootloader */	/* Monitor protection ON by default */#if CFG_MONITOR_BASE >= CFG_FLASH_BASE	flash_protect(FLAG_PROTECT_SET,			CFG_MONITOR_BASE,			CFG_MONITOR_BASE+monitor_flash_len-1,			&flash_info[0]);#endif#if !defined(CONFIG_PATI)	/* protect reset vector */	flash_info[0].protect[flash_info[0].sector_count-1] = 1;	size_b1 = 0 ;	flash_info[0].size = size_b0;	/* set up flash cs according to the size */	size_reg=(flash_info[0].size >>20);	switch (size_reg) {		case 0:		case 1: i=0; break; /* <= 1MB */		case 2: i=1; break; /* = 2MB */		case 4: i=2; break; /* = 4MB */		case 8: i=3; break; /* = 8MB */		case 16: i=4; break; /* = 16MB */		case 32: i=5; break; /* = 32MB */		case 64: i=6; break; /* = 64MB */		case 128: i=7; break; /*= 128MB */		default:			printf("\n #### ERROR, wrong size %ld MByte reset board #####\n",size_reg);			while(1);	}	if(mode & BOOT_MPS) {		/* flash is on CS1 */		mtdcr(ebccfga, pb1cr);		flashcr = mfdcr (ebccfgd);		/* we map the flash high in every case */		flashcr&=0x0001FFFF; /* mask out address bits */		flashcr|= ((0-flash_info[0].size) & 0xFFF00000); /* start addr */		flashcr|= (i << 17); /* size addr */		mtdcr(ebccfga, pb1cr);		mtdcr(ebccfgd, flashcr);	}	else {		/* flash is on CS0 */		mtdcr(ebccfga, pb0cr);		flashcr = mfdcr (ebccfgd);		/* we map the flash high in every case */		flashcr&=0x0001FFFF; /* mask out address bits */		flashcr|= ((0-flash_info[0].size) & 0xFFF00000); /* start addr */		flashcr|= (i << 17); /* size addr */		mtdcr(ebccfga, pb0cr);		mtdcr(ebccfgd, flashcr);	}#if 0	/* enable this (PIP405/MIP405 only) if you want to test if	   the relocation has be done ok.	   This will disable both Chipselects */	mtdcr (ebccfga, pb0cr);	mtdcr (ebccfgd, 0L);	mtdcr (ebccfga, pb1cr);	mtdcr (ebccfgd, 0L);	printf("CS0 & CS1 switched off for test\n");#endif	/* patch version_string */	for(i=0;i<0x100;i++) {		if(*p=='\n') {			*p=0;			break;		}		p++;	}#else /* #if !defined(CONFIG_PATI) */#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#endif /* #if !defined(CONFIG_PATI) */	return (size_b0);}/*----------------------------------------------------------------------- */void flash_print_info  (flash_info_t *info){	int i;	int k;	int size;	int erased;	volatile unsigned long *flash;	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_SST:	printf ("SST ");		break;	case FLASH_MAN_INTEL:	printf ("Intel ");		break;	default:		printf ("Unknown Vendor ");	break;	}	switch (info->flash_id & FLASH_TYPEMASK) {	case FLASH_AM040:	printf ("AM29F040 (512 Kbit, uniform sector size)\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;	case FLASH_SST800A:	printf ("SST39LF/VF800 (8 Mbit, uniform sector size)\n");				break;	case FLASH_SST160A:	printf ("SST39LF/VF160 (16 Mbit, uniform sector size)\n");				break;	case FLASH_INTEL320T:	printf ("TE28F320C3 (32 Mbit, top sector size)\n");				break;	case FLASH_AM640U:	printf ("AM29LV640U (64 Mbit, uniform sector size)\n");				break;	default:		printf ("Unknown Chip Type\n");				break;	}	printf ("  Size: %ld KB in %d Sectors\n",		info->size >> 10, info->sector_count);	printf ("  Sector Start Addresses:");	for (i=0; i<info->sector_count; ++i) {		/*		 * Check if whole sector is erased		*/		if (i != (info->sector_count-1))			size = info->start[i+1] - info->start[i];		else			size = info->start[0] + info->size - info->start[i];		erased = 1;		flash = (volatile unsigned long *)info->start[i];		size = size >> 2;        /* divide by 4 for longword access */		for (k=0; k<size; k++) {			if (*flash++ != 0xffffffff) {				erased = 0;				break;			}		}		if ((i % 5) == 0)			printf ("\n   ");		printf (" %08lX%s%s",			info->start[i],			erased ? " E" : "  ",			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;	FLASH_WORD_SIZE value;	ulong base;	volatile FLASH_WORD_SIZE *addr2 = (FLASH_WORD_SIZE *)addr;	/* Write auto select command: read Manufacturer ID */	addr2[ADDR0] = (FLASH_WORD_SIZE)0x00AA00AA;	addr2[ADDR1] = (FLASH_WORD_SIZE)0x00550055;	addr2[ADDR0] = (FLASH_WORD_SIZE)0x00900090;	value = addr2[0];	/*	printf("flash_get_size value: %x\n",value); */	switch (value) {	case (FLASH_WORD_SIZE)AMD_MANUFACT:		info->flash_id = FLASH_MAN_AMD;		break;	case (FLASH_WORD_SIZE)FUJ_MANUFACT:		info->flash_id = FLASH_MAN_FUJ;		break;	case (FLASH_WORD_SIZE)INTEL_MANUFACT:		info->flash_id = FLASH_MAN_INTEL;		break;	case (FLASH_WORD_SIZE)SST_MANUFACT:		info->flash_id = FLASH_MAN_SST;		break;	default:		info->flash_id = FLASH_UNKNOWN;		info->sector_count = 0;		info->size = 0;		return (0);			/* no or unknown flash	*/	}	value = addr2[1];			/* device ID		*/	/*	printf("Device value %x\n",value); 		    */	switch (value) {	case (FLASH_WORD_SIZE)AMD_ID_F040B:		info->flash_id += FLASH_AM040;		info->sector_count = 8;		info->size = 0x0080000; /* => 512 ko */		break;	case (FLASH_WORD_SIZE)AMD_ID_LV400T:		info->flash_id += FLASH_AM400T;		info->sector_count = 11;		info->size = 0x00080000;		break;				/* => 0.5 MB		*/	case (FLASH_WORD_SIZE)AMD_ID_LV400B:		info->flash_id += FLASH_AM400B;		info->sector_count = 11;		info->size = 0x00080000;		break;				/* => 0.5 MB		*/	case (FLASH_WORD_SIZE)AMD_ID_LV800T:		info->flash_id += FLASH_AM800T;		info->sector_count = 19;		info->size = 0x00100000;		break;				/* => 1 MB		*/	case (FLASH_WORD_SIZE)AMD_ID_LV800B:		info->flash_id += FLASH_AM800B;		info->sector_count = 19;		info->size = 0x00100000;		break;				/* => 1 MB		*/	case (FLASH_WORD_SIZE)AMD_ID_LV160T:		info->flash_id += FLASH_AM160T;		info->sector_count = 35;		info->size = 0x00200000;		break;				/* => 2 MB		*/	case (FLASH_WORD_SIZE)AMD_ID_LV160B:		info->flash_id += FLASH_AM160B;		info->sector_count = 35;		info->size = 0x00200000;		break;				/* => 2 MB		*/