/* * (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 * *//* * IDE support */#include <armboot.h>#include <config.h>#include <command.h>#include <image.h>#ifdef CONFIG_IDE_PCMCIA# include <pcmcia.h>#endif#include <ide.h>#include <ata.h>#include <part.h>#include <cmd_ide.h>#include <cmd_disk.h>#include <cmd_pcmcia.h>#ifdef CONFIG_STATUS_LED# include <status_led.h>#endif//#undef	IDE_DEBUG#define	IDE_DEBUG#ifdef	IDE_DEBUG#define	PRINTF(fmt,args...)	printf (fmt ,##args)#else#define PRINTF(fmt,args...)#endif#if (CONFIG_COMMANDS & CFG_CMD_IDE)/* Timings for IDE Interface * * SETUP / LENGTH / HOLD - cycles valid for 50 MHz clk * 70      165      30     PIO-Mode 0, [ns] *  4        9       2                 [Cycles] * 50      125      20     PIO-Mode 1, [ns] *  3        7       2                 [Cycles] * 30      100      15     PIO-Mode 2, [ns] *  2        6       1                 [Cycles] * 30       80      10     PIO-Mode 3, [ns] *  2        5       1                 [Cycles] * 25       70      10     PIO-Mode 4, [ns] *  2        4       1                 [Cycles] */const static pio_config_t pio_config_ns [IDE_MAX_PIO_MODE+1] ={    /*  Setup  Length  Hold  */	{ 70,   165,    30 },		/* PIO-Mode 0, [ns]	*/	{ 50,   125,    20 },		/* PIO-Mode 1, [ns]	*/	{ 30,   101,    15 },		/* PIO-Mode 2, [ns]	*/	{ 30,    80,    10 },		/* PIO-Mode 3, [ns]	*/	{ 25,    70,    10 },		/* PIO-Mode 4, [ns]	*/};static pio_config_t pio_config_clk [IDE_MAX_PIO_MODE+1];#ifndef	CFG_PIO_MODE#define	CFG_PIO_MODE	0		/* use a relaxed default */#endifstatic int pio_mode = CFG_PIO_MODE;/* Make clock cycles and always round up */#define PCMCIA_MK_CLKS( t, T ) (( (t) * (T) + 999U ) / 1000U )/* ------------------------------------------------------------------------- *//* Current I/O Device	*/static int curr_device = -1;/* Current offset for IDE0 / IDE1 bus access	*/#ifdef CONFIG_BAB750extern ulong bus_offset[];#elsestatic ulong bus_offset[CFG_IDE_MAXBUS] = {	CFG_ATA_IDE0_OFFSET,#if CFG_IDE_MAXBUS > 1	CFG_ATA_IDE1_OFFSET,#endif};#endif//#define	ATA_CURR_BASE(dev)	(CFG_ATA_BASE_ADDR+bus_offset[IDE_BUS(dev)])#define	ATA_CURR_BASE(dev)	(bus_offset[IDE_BUS(dev)])static int	    ide_bus_ok[CFG_IDE_MAXBUS];static  block_dev_desc_t ide_dev_desc[CFG_IDE_MAXDEVICE];/* ------------------------------------------------------------------------- */#ifdef CONFIG_IDE_LEDstatic void  ide_led   (uchar led, uchar status);#else#define ide_led(a,b)	/* dummy */#endif#ifdef CONFIG_IDE_RESETstatic void  ide_reset (void);#else#define ide_reset()	/* dummy */#endifstatic void  ide_ident (block_dev_desc_t *dev_desc);static uchar ide_wait  (int dev, ulong t);#ifdef CONFIG_PIP405#define IDE_TIME_OUT 2000 /* 2 sec timeout */#else#define IDE_TIME_OUT 500 /* 500ms timeout */#endif#define ATAPI_TIME_OUT 7000 /* 7 sec timeout (5 sec seems to work...) */static void __inline__ outb(int dev, int port, unsigned char val);static unsigned char __inline__ inb(int dev, int port);static void input_swap_data(int dev, ulong *sect_buf, int words);static void input_data(int dev, ulong *sect_buf, int words);static void output_data(int dev, ulong *sect_buf, int words);static void ident_cpy (unsigned char *dest, unsigned char *src, unsigned int len);#ifdef CONFIG_ATAPIstatic void	atapi_inquiry(block_dev_desc_t *dev_desc);ulong atapi_read (int device, ulong blknr, ulong blkcnt, ulong *buffer);#endif#ifdef CONFIG_IDE_PCMCIAstatic void set_pcmcia_timing (int pmode);#else#define set_pcmcia_timing(a)	/* dummy */#endif/* ------------------------------------------------------------------------- */int do_ide (cmd_tbl_t *cmdtp, bd_t *bd, int flag, int argc, char *argv[]){    int rcode = 0;    switch (argc) {    case 0:    case 1:	printf ("Usage:\n%s\n", cmdtp->usage);	return 1;    case 2:	if (strncmp(argv[1],"res",3) == 0) {		puts ("\nReset IDE"#ifdef CONFIG_IDE_PCMCIA			" on PCMCIA " PCMCIA_SLOT_MSG#endif			": ");		ide_init(bd);		return 0;	} else if (strncmp(argv[1],"inf",3) == 0) {		int i;		putc ('\n');		for (i=0; i<CFG_IDE_MAXDEVICE; ++i) {			if(ide_dev_desc[i].type==DEV_TYPE_UNKNOWN)				continue; /* list only known devices */			printf ("IDE device %d: ", i);			dev_print(&ide_dev_desc[i]);		}		return 0;	} else if (strncmp(argv[1],"dev",3) == 0) {		if ((curr_device < 0) || (curr_device >= CFG_IDE_MAXDEVICE)) {			puts ("\nno IDE devices available\n");			return 1;		}		printf ("\nIDE device %d: ", curr_device);		dev_print(&ide_dev_desc[curr_device]);		return 0;	} else if (strncmp(argv[1],"part",4) == 0) {		int dev, ok;		for (ok=0, dev=0; dev<CFG_IDE_MAXDEVICE; ++dev) {			if (ide_dev_desc[dev].part_type!=PART_TYPE_UNKNOWN) {				++ok;				if (dev)					putc ('\n');				print_part(&ide_dev_desc[dev]);			}		}		if (!ok) {			puts ("\nno IDE devices available\n");			rcode ++;		}		return rcode;	}	printf ("Usage:\n%s\n", cmdtp->usage);	return 1;    case 3:	if (strncmp(argv[1],"dev",3) == 0) {		int dev = (int)simple_strtoul(argv[2], NULL, 10);		printf ("\nIDE device %d: ", dev);		if (dev >= CFG_IDE_MAXDEVICE) {			puts ("unknown device\n");			return 1;		}		dev_print(&ide_dev_desc[dev]);		/*ide_print (dev);*/		if (ide_dev_desc[dev].type == DEV_TYPE_UNKNOWN) {			return 1;		}		curr_device = dev;		puts ("... is now current device\n");		return 0;	} else if (strncmp(argv[1],"part",4) == 0) {		int dev = (int)simple_strtoul(argv[2], NULL, 10);		if (ide_dev_desc[dev].part_type!=PART_TYPE_UNKNOWN) {				print_part(&ide_dev_desc[dev]);		} else {			printf ("\nIDE device %d not available\n", dev);			rcode = 1;		}		return rcode;#if 0	} else if (strncmp(argv[1],"pio",4) == 0) {		int mode = (int)simple_strtoul(argv[2], NULL, 10);		if ((mode >= 0) && (mode <= IDE_MAX_PIO_MODE)) {			puts ("\nSetting ");			pio_mode = mode;			ide_init (bd);		} else {			printf ("\nInvalid PIO mode %d (0 ... %d only)\n",				mode, IDE_MAX_PIO_MODE);		}		return;#endif	}	printf ("Usage:\n%s\n", cmdtp->usage);	return 1;    default:	/* at least 4 args */	if (strcmp(argv[1],"read") == 0) {		ulong addr = simple_strtoul(argv[2], NULL, 16);		ulong blk  = simple_strtoul(argv[3], NULL, 16);		ulong cnt  = simple_strtoul(argv[4], NULL, 16);		ulong n;		printf ("\nIDE read: device %d block # %ld, count %ld ... ",			curr_device, blk, cnt);		n = ide_dev_desc[curr_device].block_read (curr_device, blk, cnt, (ulong *)addr);/*		n = ide_read (curr_device, blk, cnt, (ulong *)addr); */		printf ("%ld blocks read: %s\n",			n, (n==cnt) ? "OK" : "ERROR");		if (n==cnt) {			return 0;		} else {			return 1;		}		} else if (strcmp(argv[1],"write") == 0) {		ulong addr = simple_strtoul(argv[2], NULL, 16);		ulong blk  = simple_strtoul(argv[3], NULL, 16);		ulong cnt  = simple_strtoul(argv[4], NULL, 16);		ulong n;		printf ("\nIDE write: device %d block # %ld, count %ld ... ",			curr_device, blk, cnt);		n = ide_write (curr_device, blk, cnt, (ulong *)addr);		printf ("%ld blocks written: %s\n",			n, (n==cnt) ? "OK" : "ERROR");		if (n==cnt) {			return 0;		} else {			return 1;		}	} else {		printf ("Usage:\n%s\n", cmdtp->usage);		rcode = 1;	}	return rcode;    }}int do_diskboot (cmd_tbl_t *cmdtp, bd_t *bd, int flag, int argc, char *argv[]){	char *boot_device = NULL;	char *ep;	int dev, part=0;	ulong cnt;	ulong addr;	disk_partition_t info;	image_header_t *hdr;	int rcode = 0;	switch (argc) {	case 1:		addr = CFG_LOAD_ADDR;		boot_device = getenv (bd, "bootdevice");		break;	case 2:		addr = simple_strtoul(argv[1], NULL, 16);		boot_device = getenv (bd, "bootdevice");		break;	case 3:		addr = simple_strtoul(argv[1], NULL, 16);		boot_device = argv[2];		break;	default:		printf ("Usage:\n%s\n", cmdtp->usage);		return 1;	}	if (!boot_device) {		puts ("\n** No boot device **\n");		return 1;	}	dev = simple_strtoul(boot_device, &ep, 16);	if (ide_dev_desc[dev].type==DEV_TYPE_UNKNOWN) {		printf ("\n** Device %d not available\n", dev);		return 1;	}	if (*ep) {		if (*ep != ':') {			puts ("\n** Invalid boot device, use `dev[:part]' **\n");			return 1;		}		part = simple_strtoul(++ep, NULL, 16);	}	if (get_partition_info (&ide_dev_desc[dev], part, &info)) {		return 1;	}	if (strncmp(info.type, BOOT_PART_TYPE, sizeof(info.type)) != 0) {		printf ("\n** Invalid partition type \"%.32s\""			" (expect \"" BOOT_PART_TYPE "\")\n",			info.type);		return 1;	}	printf ("\nLoading from IDE device %d, partition %d: "		"Name: %.32s  Type: %.32s\n",		dev, part, info.name, info.type);	PRINTF ("First Block: %ld,  # of blocks: %ld, Block Size: %ld\n",		info.start, info.size, info.blksz);	if (ide_dev_desc[dev].block_read (dev, info.start, 1, (ulong *)addr) != 1) {		printf ("** Read error on %d:%d\n", dev, part);		return 1;	}	hdr = (image_header_t *)addr;	if (SWAP32(hdr->ih_magic) == IH_MAGIC) {		print_image_hdr (hdr);		cnt = (SWAP32(hdr->ih_size) + sizeof(image_header_t));		cnt += info.blksz - 1;		cnt /= info.blksz;		cnt -= 1;	} else {		printf("\n** Bad Magic Number **\n");		return 1;	}	if (ide_dev_desc[dev].block_read (dev, info.start+1, cnt,		      (ulong *)(addr+info.blksz)) != cnt) {		printf ("** Read error on %d:%d\n", dev, part);		return 1;	}	/* Loading ok, update default load address */	load_addr = addr;	/* Check if we should attempt an auto-start */	if (((ep = getenv(bd, "autostart")) != NULL) && (strcmp(ep,"yes") == 0)) {		char *local_args[2];		extern int do_bootm (cmd_tbl_t *, bd_t *, int, int, char *[]);		local_args[0] = argv[0];		local_args[1] = NULL;		printf ("Automatic boot of image at addr 0x%08lX ...\n", addr);		do_bootm (cmdtp, bd, 0, 1, local_args);		rcode = 1;	}	return rcode;}/* ------------------------------------------------------------------------- */void ide_init (bd_t *bd){#ifdef CONFIG_IDE_PCMCIA	volatile immap_t *immr = (immap_t *)CFG_IMMR;	volatile pcmconf8xx_t *pcmp = &(immr->im_pcmcia);#endif	unsigned char c;	int i, bus;#ifdef CONFIG_IDE_PCCARD	extern int pcmcia_on (void);# if defined(CONFIG_WATCHDOG)	watchdog_reset ();# endif	/* CONFIG_WATCHDOG */	/* initialize the PCMCIA IDE adapter card */	if (pcmcia_on())		return;	udelay (1000000);	/* 1 s */#endif	/* CONFIG_IDE_PCCARD */#if defined(CONFIG_WATCHDOG)	watchdog_reset ();#endif	/* CONFIG_WATCHDOG */#define WE_DONT_HAVE_BD_BI_BUSFREQ 100000	/* Initialize PIO timing tables */	for (i=0; i <= IDE_MAX_PIO_MODE; ++i) {	    pio_config_clk[i].t_setup  = PCMCIA_MK_CLKS(pio_config_ns[i].t_setup,							    WE_DONT_HAVE_BD_BI_BUSFREQ);	    pio_config_clk[i].t_length = PCMCIA_MK_CLKS(pio_config_ns[i].t_length,