Initial revision

3 files changed, 1372 insertions, 0 deletions

diff --git a/common/cmd_reginfo.c b/common/cmd_reginfo.c
new file mode 100644
index 0000000..1986c22
--- /dev/null
+++ b/common/cmd_reginfo.c
@@ -0,0 +1,180 @@
+/*
+ * (C) Copyright 2000
+ * Subodh Nijsure, SkyStream Networks, snijsure@skystream.com
+ *
+ * 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 <command.h>
+#include <cmd_boot.h>
+#if defined(CONFIG_8xx)
+#include <mpc8xx.h>
+#elif defined (CONFIG_405GP)
+#include <asm/processor.h>
+#endif
+#if (CONFIG_COMMANDS & CFG_CMD_REGINFO)
+
+int do_reginfo (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+#if defined(CONFIG_8xx)
+	volatile immap_t     *immap  = (immap_t *)CFG_IMMR;
+	volatile memctl8xx_t *memctl = &immap->im_memctl;
+	volatile sysconf8xx_t *sysconf = &immap->im_siu_conf;
+	volatile sit8xx_t *timers = &immap->im_sit;
+
+	/* Hopefully more PowerPC  knowledgable people will add code to display
+	 * other useful registers
+	 */
+
+	printf("\nSystem Configuration registers\n");
+
+	printf("\tIMMR\t0x%08X\n", get_immr(0));
+
+	printf("\tSIUMCR\t0x%08X", sysconf->sc_siumcr);
+	printf("\tSYPCR\t0x%08X\n",sysconf->sc_sypcr);
+
+	printf("\tSWT\t0x%08X",    sysconf->sc_swt);
+	printf("\tSWSR\t0x%04X\n", sysconf->sc_swsr);
+
+	printf("\tSIPEND\t0x%08X\tSIMASK\t0x%08X\n",
+		sysconf->sc_sipend, sysconf->sc_simask);
+	printf("\tSIEL\t0x%08X\tSIVEC\t0x%08X\n",
+		sysconf->sc_siel, sysconf->sc_sivec);
+	printf("\tTESR\t0x%08X\tSDCR\t0x%08X\n",
+		sysconf->sc_tesr, sysconf->sc_sdcr);
+
+	printf("Memory Controller Registers\n");
+
+	printf("\tBR0\t0x%08X\tOR0\t0x%08X \n", memctl->memc_br0, memctl->memc_or0);
+	printf("\tBR1\t0x%08X\tOR1\t0x%08X \n", memctl->memc_br1, memctl->memc_or1);
+	printf("\tBR2\t0x%08X\tOR2\t0x%08X \n", memctl->memc_br2, memctl->memc_or2);
+	printf("\tBR3\t0x%08X\tOR3\t0x%08X \n", memctl->memc_br3, memctl->memc_or3);
+	printf("\tBR4\t0x%08X\tOR4\t0x%08X \n", memctl->memc_br4, memctl->memc_or4);
+	printf("\tBR5\t0x%08X\tOR5\t0x%08X \n", memctl->memc_br5, memctl->memc_or5);
+	printf("\tBR6\t0x%08X\tOR6\t0x%08X \n", memctl->memc_br6, memctl->memc_or6);
+	printf("\tBR7\t0x%08X\tOR7\t0x%08X \n", memctl->memc_br7, memctl->memc_or7);
+	printf("\n");
+
+	printf("\tmamr\t0x%08X\tmbmr\t0x%08X \n",
+		memctl->memc_mamr, memctl->memc_mbmr );
+	printf("\tmstat\t0x%08X\tmptpr\t0x%08X \n",
+		memctl->memc_mstat, memctl->memc_mptpr );
+	printf("\tmdr\t0x%08X \n", memctl->memc_mdr);
+
+	printf("\nSystem Integration Timers\n");
+	printf("\tTBSCR\t0x%08X\tRTCSC\t0x%08X \n",
+		timers->sit_tbscr, timers->sit_rtcsc);
+	printf("\tPISCR\t0x%08X \n", timers->sit_piscr);
+
+	/*
+	 * May be some CPM info here?
+	 */
+
+/* DBU[dave@cray.com]   For the CRAY-L1, but should be generically 405gp */
+#elif defined (CONFIG_405GP)
+	printf("\n405GP registers; MSR=%x\n",mfmsr());
+		printf ("\nUniversal Interrupt Controller Regs\n"
+"uicsr    uicsrs   uicer    uiccr    uicpr    uictr    uicmsr   uicvr    uicvcr"
+"\n"
+"%08x %08x %08x %08x %08x %08x %08x %08x %08x\n",
+	mfdcr(uicsr),
+	mfdcr(uicsrs),
+	mfdcr(uicer),
+	mfdcr(uiccr),
+	mfdcr(uicpr),
+	mfdcr(uictr),
+	mfdcr(uicmsr),
+	mfdcr(uicvr),
+	mfdcr(uicvcr));
+
+	printf ("\nMemory (SDRAM) Configuration\n"
+"besra    besrsa   besrb    besrsb   bear     mcopt1   rtr      pmit\n");
+
+	mtdcr(memcfga,mem_besra); 	printf ("%08x ", mfdcr(memcfgd));
+	mtdcr(memcfga,mem_besrsa);	printf ("%08x ", mfdcr(memcfgd));
+	mtdcr(memcfga,mem_besrb); 	printf ("%08x ", mfdcr(memcfgd));
+	mtdcr(memcfga,mem_besrsb); 	printf ("%08x ", mfdcr(memcfgd));
+	mtdcr(memcfga,mem_bear); 	printf ("%08x ", mfdcr(memcfgd));
+	mtdcr(memcfga,mem_mcopt1); 	printf ("%08x ", mfdcr(memcfgd));
+	mtdcr(memcfga,mem_rtr); 	printf ("%08x ", mfdcr(memcfgd));
+	mtdcr(memcfga,mem_pmit); 	printf ("%08x ", mfdcr(memcfgd));
+
+	printf ("\n"
+"mb0cf    mb1cf    mb2cf    mb3cf    sdtr1    ecccf    eccerr\n");
+	mtdcr(memcfga,mem_mb0cf); 	printf ("%08x ", mfdcr(memcfgd));
+	mtdcr(memcfga,mem_mb1cf); 	printf ("%08x ", mfdcr(memcfgd));
+	mtdcr(memcfga,mem_mb2cf); 	printf ("%08x ", mfdcr(memcfgd));
+	mtdcr(memcfga,mem_mb3cf); 	printf ("%08x ", mfdcr(memcfgd));
+	mtdcr(memcfga,mem_sdtr1); 	printf ("%08x ", mfdcr(memcfgd));
+	mtdcr(memcfga,mem_ecccf); 	printf ("%08x ", mfdcr(memcfgd));
+	mtdcr(memcfga,mem_eccerr); 	printf ("%08x ", mfdcr(memcfgd));
+
+	printf ("\n\n"
+"DMA Channels\n"
+"dmasr    dmasgc   dmaadr\n"						"%08x %08x %08x\n"
+"dmacr_0  dmact_0  dmada_0  dmasa_0  dmasb_0\n"	"%08x %08x %08x %08x %08x\n"
+"dmacr_1  dmact_1  dmada_1  dmasa_1  dmasb_1\n"	"%08x %08x %08x %08x %08x\n",
+mfdcr(dmasr),  mfdcr(dmasgc),mfdcr(dmaadr),
+mfdcr(dmacr0), mfdcr(dmact0),mfdcr(dmada0), mfdcr(dmasa0), mfdcr(dmasb0),
+mfdcr(dmacr1), mfdcr(dmact1),mfdcr(dmada1), mfdcr(dmasa1), mfdcr(dmasb1));
+
+	printf (
+"dmacr_2  dmact_2  dmada_2  dmasa_2  dmasb_2\n"	"%08x %08x %08x %08x %08x\n"
+"dmacr_3  dmact_3  dmada_3  dmasa_3  dmasb_3\n"	"%08x %08x %08x %08x %08x\n",
+mfdcr(dmacr2), mfdcr(dmact2),mfdcr(dmada2), mfdcr(dmasa2), mfdcr(dmasb2),
+mfdcr(dmacr3), mfdcr(dmact3),mfdcr(dmada3), mfdcr(dmasa3), mfdcr(dmasb3) );
+
+	printf ("\n"
+"External Bus\n"
+"pbear    pbesr0   pbesr1   epcr\n");
+	mtdcr(ebccfga,pbear); 	printf ("%08x ", mfdcr(ebccfgd));
+	mtdcr(ebccfga,pbesr0); 	printf ("%08x ", mfdcr(ebccfgd));
+	mtdcr(ebccfga,pbesr1); 	printf ("%08x ", mfdcr(ebccfgd));
+	mtdcr(ebccfga,epcr); 	printf ("%08x ", mfdcr(ebccfgd));
+
+	printf ("\n"
+"pb0cr    pb0ap    pb1cr    bp1ap    pb2cr    pb2ap    pb3cr    pb3ap\n");
+	mtdcr(ebccfga,pb0cr); 	printf ("%08x ", mfdcr(ebccfgd));
+	mtdcr(ebccfga,pb0ap); 	printf ("%08x ", mfdcr(ebccfgd));
+	mtdcr(ebccfga,pb1cr); 	printf ("%08x ", mfdcr(ebccfgd));
+	mtdcr(ebccfga,pb1ap); 	printf ("%08x ", mfdcr(ebccfgd));
+	mtdcr(ebccfga,pb2cr); 	printf ("%08x ", mfdcr(ebccfgd));
+	mtdcr(ebccfga,pb2ap); 	printf ("%08x ", mfdcr(ebccfgd));
+	mtdcr(ebccfga,pb3cr); 	printf ("%08x ", mfdcr(ebccfgd));
+	mtdcr(ebccfga,pb3ap); 	printf ("%08x ", mfdcr(ebccfgd));
+
+	printf ("\n"
+"pb4cr    pb4ap    pb5cr    bp5ap    pb6cr    pb6ap    pb7cr    pb7ap\n");
+	mtdcr(ebccfga,pb4cr); 	printf ("%08x ", mfdcr(ebccfgd));
+	mtdcr(ebccfga,pb4ap); 	printf ("%08x ", mfdcr(ebccfgd));
+	mtdcr(ebccfga,pb5cr); 	printf ("%08x ", mfdcr(ebccfgd));
+	mtdcr(ebccfga,pb5ap); 	printf ("%08x ", mfdcr(ebccfgd));
+	mtdcr(ebccfga,pb6cr); 	printf ("%08x ", mfdcr(ebccfgd));
+	mtdcr(ebccfga,pb6ap); 	printf ("%08x ", mfdcr(ebccfgd));
+	mtdcr(ebccfga,pb7cr); 	printf ("%08x ", mfdcr(ebccfgd));
+	mtdcr(ebccfga,pb7ap); 	printf ("%08x ", mfdcr(ebccfgd));
+
+	printf ("\n\n");
+#endif /*(CONFIG_405GP)*/
+
+	return 0;
+}
+
+#endif	/* CONFIG_8xx && CFG_CMD_REGINFO */
diff --git a/common/cmd_scsi.c b/common/cmd_scsi.c
new file mode 100644
index 0000000..9b5c69b
--- /dev/null
+++ b/common/cmd_scsi.c
@@ -0,0 +1,597 @@
+/*
+ * (C) Copyright 2001
+ * Denis Peter, MPL AG Switzerland
+ *
+ * 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
+ *
+ *
+ *
+ */
+
+/*
+ * SCSI support.
+ */
+
+#include <common.h>
+#include <command.h>
+#include <cmd_boot.h>
+#include <asm/processor.h>
+#include <scsi.h>
+#include <image.h>
+#include <cmd_disk.h>
+#include <pci.h>
+
+
+#undef	SCSI_DEBUG
+
+#ifdef	SCSI_DEBUG
+#define	PRINTF(fmt,args...)	printf (fmt ,##args)
+#else
+#define PRINTF(fmt,args...)
+#endif
+
+#if (CONFIG_COMMANDS & CFG_CMD_SCSI)
+
+#ifdef CONFIG_SCSI_SYM53C8XX
+#define SCSI_VEND_ID	0x1000
+#ifndef CONFIG_SCSI_DEV_ID
+#define SCSI_DEV_ID		0x0001
+#else
+#define SCSI_DEV_ID		CONFIG_SCSI_DEV_ID
+#endif
+#else
+#error CONFIG_SCSI_SYM53C8XX must be defined
+#endif
+
+
+static ccb tempccb;	/* temporary scsi command buffer */
+
+static unsigned char tempbuff[512]; /* temporary data buffer */
+
+static int scsi_max_devs; /* number of highest available scsi device */
+
+static int scsi_curr_dev; /* current device */
+
+static block_dev_desc_t scsi_dev_desc[CFG_SCSI_MAX_DEVICE];
+
+/********************************************************************************
+ *  forward declerations of some Setup Routines
+ */
+void scsi_setup_test_unit_ready(ccb * pccb);
+void scsi_setup_read_capacity(ccb * pccb);
+void scsi_setup_read6(ccb * pccb, unsigned long start, unsigned short blocks);
+void scsi_setup_read_ext(ccb * pccb, unsigned long start, unsigned short blocks);
+void scsi_setup_inquiry(ccb * pccb);
+void scsi_ident_cpy (unsigned char *dest, unsigned char *src, unsigned int len);
+
+
+ulong scsi_read(int device, ulong blknr, ulong blkcnt, ulong *buffer);
+
+
+/*********************************************************************************
+ * (re)-scan the scsi bus and reports scsi device info
+ * to the user if mode = 1
+ */
+void scsi_scan(int mode)
+{
+	unsigned char i,perq,modi,lun;
+	unsigned long capacity,blksz;
+	ccb* pccb=(ccb *)&tempccb;
+
+	if(mode==1) {
+		printf("scanning bus for devices...\n");
+	}
+	for(i=0;i<CFG_SCSI_MAX_DEVICE;i++) {
+		scsi_dev_desc[i].target=0xff;
+		scsi_dev_desc[i].lun=0xff;
+		scsi_dev_desc[i].lba=0;
+		scsi_dev_desc[i].blksz=0;
+		scsi_dev_desc[i].type=DEV_TYPE_UNKNOWN;
+		scsi_dev_desc[i].vendor[0]=0;
+		scsi_dev_desc[i].product[0]=0;
+		scsi_dev_desc[i].revision[0]=0;
+		scsi_dev_desc[i].removable=FALSE;
+		scsi_dev_desc[i].if_type=IF_TYPE_SCSI;
+		scsi_dev_desc[i].dev=i;
+		scsi_dev_desc[i].part_type=PART_TYPE_UNKNOWN;
+		scsi_dev_desc[i].block_read=scsi_read;
+	}
+	scsi_max_devs=0;
+	for(i=0;i<CFG_SCSI_MAX_SCSI_ID;i++) {
+		pccb->target=i;
+		for(lun=0;lun<CFG_SCSI_MAX_LUN;lun++) {
+			pccb->lun=lun;
+			pccb->pdata=(unsigned char *)&tempbuff;
+			pccb->datalen=512;
+			scsi_setup_inquiry(pccb);
+			if(scsi_exec(pccb)!=TRUE) {
+				if(pccb->contr_stat==SCSI_SEL_TIME_OUT) {
+					PRINTF("Selection timeout ID %d\n",pccb->target);
+					continue; /* selection timeout => assuming no device present */
+				}
+				scsi_print_error(pccb);
+				continue;
+			}
+			perq=tempbuff[0];
+			modi=tempbuff[1];
+			if((perq & 0x1f)==0x1f) {
+				continue; /* skip unknown devices */
+			}
+			if((modi&0x80)==0x80) /* drive is removable */
+				scsi_dev_desc[scsi_max_devs].removable=TRUE;
+			/* get info for this device */
+			scsi_ident_cpy(&scsi_dev_desc[scsi_max_devs].vendor[0],&tempbuff[8],8);
+			scsi_ident_cpy(&scsi_dev_desc[scsi_max_devs].product[0],&tempbuff[16],16);
+			scsi_ident_cpy(&scsi_dev_desc[scsi_max_devs].revision[0],&tempbuff[32],4);
+			scsi_dev_desc[scsi_max_devs].target=pccb->target;
+			scsi_dev_desc[scsi_max_devs].lun=pccb->lun;
+
+			pccb->datalen=0;
+			scsi_setup_test_unit_ready(pccb);
+			if(scsi_exec(pccb)!=TRUE) {
+				if(scsi_dev_desc[scsi_max_devs].removable==TRUE) {
+					scsi_dev_desc[scsi_max_devs].type=perq;
+					goto removable;
+				}
+				scsi_print_error(pccb);
+				continue;
+			}
+			pccb->datalen=8;
+			scsi_setup_read_capacity(pccb);
+			if(scsi_exec(pccb)!=TRUE) {
+				scsi_print_error(pccb);
+				continue;
+			}
+			capacity=((unsigned long)tempbuff[0]<<24)|((unsigned long)tempbuff[1]<<16)|
+					((unsigned long)tempbuff[2]<<8)|((unsigned long)tempbuff[3]);
+			blksz=((unsigned long)tempbuff[4]<<24)|((unsigned long)tempbuff[5]<<16)|
+				((unsigned long)tempbuff[6]<<8)|((unsigned long)tempbuff[7]);
+			scsi_dev_desc[scsi_max_devs].lba=capacity;
+			scsi_dev_desc[scsi_max_devs].blksz=blksz;
+			scsi_dev_desc[scsi_max_devs].type=perq;
+			init_part(&scsi_dev_desc[scsi_max_devs]);
+removable:
+			if(mode==1) {
+				printf ("  Device %d: ", scsi_max_devs);
+				dev_print(&scsi_dev_desc[scsi_max_devs]);
+			} /* if mode */
+			scsi_max_devs++;
+		} /* next LUN */
+	}
+	if(scsi_max_devs>0)
+		scsi_curr_dev=0;
+	else
+		scsi_curr_dev=-1;
+}
+
+
+
+void scsi_init(void)
+{
+	int busdevfunc;
+
+	busdevfunc=pci_find_device(SCSI_VEND_ID,SCSI_DEV_ID,0); /* get PCI Device ID */
+	if(busdevfunc==-1) {
+		printf("Error SCSI Controller (%04X,%04X) not found\n",SCSI_VEND_ID,SCSI_DEV_ID);
+		return;
+	}
+#ifdef DEBUG
+	else {
+		printf("SCSI Controller (%04X,%04X) found (%d:%d:%d)\n",SCSI_VEND_ID,SCSI_DEV_ID,(busdevfunc>>16)&0xFF,(busdevfunc>>11)&0x1F,(busdevfunc>>8)&0x7);
+	}
+#endif
+	scsi_low_level_init(busdevfunc);
+	scsi_scan(1);
+}
+
+block_dev_desc_t * scsi_get_dev(int dev)
+{
+	return((block_dev_desc_t *)&scsi_dev_desc[dev]);
+}
+
+
+
+/******************************************************************************
+ * scsi boot command intepreter. Derived from diskboot
+ */
+int do_scsiboot (cmd_tbl_t *cmdtp, 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 ("bootdevice");
+		break;
+	case 2:
+		addr = simple_strtoul(argv[1], NULL, 16);
+		boot_device = getenv ("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);
+	printf("booting from dev %d\n",dev);
+	if (scsi_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 (&scsi_dev_desc[dev], part, &info)) {
+		printf("error reading partinfo\n");
+		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 SCSI 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 (scsi_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 (hdr->ih_magic == IH_MAGIC) {
+
+		print_image_hdr (hdr);
+		cnt = (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 (scsi_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;
+
+	flush_cache (addr, (cnt+1)*info.blksz);
+
+	/* Check if we should attempt an auto-start */
+	if (((ep = getenv("autostart")) != NULL) && (strcmp(ep,"yes") == 0)) {
+		char *local_args[2];
+		extern int do_bootm (cmd_tbl_t *, int, int, char *[]);
+		local_args[0] = argv[0];
+		local_args[1] = NULL;
+		printf ("Automatic boot of image at addr 0x%08lX ...\n", addr);
+		rcode = do_bootm (cmdtp, 0, 1, local_args);
+	}
+	 return rcode;
+}
+
+/*********************************************************************************
+ * scsi command intepreter
+ */
+int do_scsi (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+	switch (argc) {
+    case 0:
+    case 1:	printf ("Usage:\n%s\n", cmdtp->usage);	return 1;
+    case 2:
+			if (strncmp(argv[1],"res",3) == 0) {
+				printf("\nReset SCSI\n");
+				scsi_bus_reset();
+				scsi_scan(1);
+				return 0;
+			}
+			if (strncmp(argv[1],"inf",3) == 0) {
+				int i;
+				for (i=0; i<CFG_SCSI_MAX_DEVICE; ++i) {
+					if(scsi_dev_desc[i].type==DEV_TYPE_UNKNOWN)
+						continue; /* list only known devices */
+					printf ("SCSI dev. %d:  ", i);
+					dev_print(&scsi_dev_desc[i]);
+				}
+				return 0;
+			}
+			if (strncmp(argv[1],"dev",3) == 0) {
+				if ((scsi_curr_dev < 0) || (scsi_curr_dev >= CFG_SCSI_MAX_DEVICE)) {
+					printf("\nno SCSI devices available\n");
+					return 1;
+				}
+				printf ("\n    Device %d: ", scsi_curr_dev);
+				dev_print(&scsi_dev_desc[scsi_curr_dev]);
+				return 0;
+			}
+			if (strncmp(argv[1],"scan",4) == 0) {
+				scsi_scan(1);
+				return 0;
+			}
+			if (strncmp(argv[1],"part",4) == 0) {
+				int dev, ok;
+				for (ok=0, dev=0; dev<CFG_SCSI_MAX_DEVICE; ++dev) {
+					if (scsi_dev_desc[dev].type!=DEV_TYPE_UNKNOWN) {
+						ok++;
+						if (dev)
+							printf("\n");
+						PRINTF("print_part of %x\n",dev);
+							print_part(&scsi_dev_desc[dev]);
+					}
+				}
+				if (!ok)
+					printf("\nno SCSI devices available\n");
+				return 1;
+			}
+			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 ("\nSCSI device %d: ", dev);
+				if (dev >= CFG_SCSI_MAX_DEVICE) {
+					printf("unknown device\n");
+					return 1;
+				}
+				printf ("\n    Device %d: ", dev);
+				dev_print(&scsi_dev_desc[dev]);
+				if(scsi_dev_desc[dev].type == DEV_TYPE_UNKNOWN) {
+					return 1;
+				}
+				scsi_curr_dev = dev;
+				printf("... is now current device\n");
+				return 0;
+			}
+			if (strncmp(argv[1],"part",4) == 0) {
+				int dev = (int)simple_strtoul(argv[2], NULL, 10);
+				if(scsi_dev_desc[dev].type != DEV_TYPE_UNKNOWN) {
+					print_part(&scsi_dev_desc[dev]);
+				}
+				else {
+					printf ("\nSCSI device %d not available\n", dev);
+				}
+				return 1;
+			}
+			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 ("\nSCSI read: device %d block # %ld, count %ld ... ",
+						scsi_curr_dev, blk, cnt);
+				n = scsi_read(scsi_curr_dev, blk, cnt, (ulong *)addr);
+				printf ("%ld blocks read: %s\n",n,(n==cnt) ? "OK" : "ERROR");
+				return 0;
+			}
+	} /* switch */
+	printf ("Usage:\n%s\n", cmdtp->usage);
+	return 1;
+}
+
+/****************************************************************************************
+ * scsi_read
+ */
+
+#define SCSI_MAX_READ_BLK 0xFFFF /* almost the maximum amount of the scsi_ext command.. */
+
+ulong scsi_read(int device, ulong blknr, ulong blkcnt, ulong *buffer)
+{
+	ulong start,blks, buf_addr;
+	unsigned short smallblks;
+	ccb* pccb=(ccb *)&tempccb;
+	device&=0xff;
+	/* Setup  device
+	 */
+	pccb->target=scsi_dev_desc[device].target;
+	pccb->lun=scsi_dev_desc[device].lun;
+	buf_addr=(unsigned long)buffer;
+	start=blknr;
+	blks=blkcnt;
+	PRINTF("\nscsi_read: dev %d startblk %lx, blccnt %lx buffer %lx\n",device,start,blks,(unsigned long)buffer);
+	do {
+		pccb->pdata=(unsigned char *)buf_addr;
+		if(blks>SCSI_MAX_READ_BLK) {
+			pccb->datalen=scsi_dev_desc[device].blksz * SCSI_MAX_READ_BLK;
+			smallblks=SCSI_MAX_READ_BLK;
+			scsi_setup_read_ext(pccb,start,smallblks);
+			start+=SCSI_MAX_READ_BLK;
+			blks-=SCSI_MAX_READ_BLK;
+		}
+		else {
+			pccb->datalen=scsi_dev_desc[device].blksz * blks;
+			smallblks=(unsigned short) blks;
+			scsi_setup_read_ext(pccb,start,smallblks);
+			start+=blks;
+			blks=0;
+		}
+		PRINTF("scsi_read_ext: startblk %lx, blccnt %x buffer %lx\n",start,smallblks,buf_addr);
+		if(scsi_exec(pccb)!=TRUE) {
+			scsi_print_error(pccb);
+			blkcnt-=blks;
+			break;
+		}
+		buf_addr+=pccb->datalen;
+	} while(blks!=0);
+	PRINTF("scsi_read_ext: end startblk %lx, blccnt %x buffer %lx\n",start,smallblks,buf_addr);
+	return(blkcnt);
+}
+
+/* copy src to dest, skipping leading and trailing blanks
+ * and null terminate the string
+ */
+void scsi_ident_cpy (unsigned char *dest, unsigned char *src, unsigned int len)
+{
+	int start,end;
+
+	start=0;
+	while(start<len) {
+		if(src[start]!=' ')
+			break;
+		start++;
+	}
+	end=len-1;
+	while(end>start) {
+		if(src[end]!=' ')
+			break;
+		end--;
+	}
+	for( ; start<=end; start++) {
+		*dest++=src[start];
+	}
+	*dest='\0';
+}
+
+
+
+/* Trim trailing blanks, and NUL-terminate string
+ */
+void scsi_trim_trail (unsigned char *str, unsigned int len)
+{
+	unsigned char *p = str + len - 1;
+
+	while (len-- > 0) {
+		*p-- = '\0';
+		if (*p != ' ') {
+			return;
+		}
+	}
+}
+
+
+/************************************************************************************
+ * Some setup (fill-in) routines
+ */
+void scsi_setup_test_unit_ready(ccb * pccb)
+{
+	pccb->cmd[0]=SCSI_TST_U_RDY;
+	pccb->cmd[1]=pccb->lun<<5;
+	pccb->cmd[2]=0;
+	pccb->cmd[3]=0;
+	pccb->cmd[4]=0;
+	pccb->cmd[5]=0;
+	pccb->cmdlen=6;
+	pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
+}
+
+void scsi_setup_read_capacity(ccb * pccb)
+{
+	pccb->cmd[0]=SCSI_RD_CAPAC;
+	pccb->cmd[1]=pccb->lun<<5;
+	pccb->cmd[2]=0;
+	pccb->cmd[3]=0;
+	pccb->cmd[4]=0;
+	pccb->cmd[5]=0;
+	pccb->cmd[6]=0;
+	pccb->cmd[7]=0;
+	pccb->cmd[8]=0;
+	pccb->cmd[9]=0;
+	pccb->cmdlen=10;
+	pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
+
+}
+
+void scsi_setup_read_ext(ccb * pccb, unsigned long start, unsigned short blocks)
+{
+	pccb->cmd[0]=SCSI_READ10;
+	pccb->cmd[1]=pccb->lun<<5;
+	pccb->cmd[2]=((unsigned char) (start>>24))&0xff;
+	pccb->cmd[3]=((unsigned char) (start>>16))&0xff;
+	pccb->cmd[4]=((unsigned char) (start>>8))&0xff;
+	pccb->cmd[5]=((unsigned char) (start))&0xff;
+	pccb->cmd[6]=0;
+	pccb->cmd[7]=((unsigned char) (blocks>>8))&0xff;
+	pccb->cmd[8]=(unsigned char) blocks & 0xff;
+	pccb->cmd[6]=0;
+	pccb->cmdlen=10;
+	pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
+	PRINTF("scsi_setup_read_ext: cmd: %02X %02X startblk %02X%02X%02X%02X blccnt %02X%02X\n",
+		pccb->cmd[0],pccb->cmd[1],
+		pccb->cmd[2],pccb->cmd[3],pccb->cmd[4],pccb->cmd[5],
+		pccb->cmd[7],pccb->cmd[8]);
+}
+
+void scsi_setup_read6(ccb * pccb, unsigned long start, unsigned short blocks)
+{
+	pccb->cmd[0]=SCSI_READ6;
+	pccb->cmd[1]=pccb->lun<<5 | (((unsigned char)(start>>16))&0x1f);
+	pccb->cmd[2]=((unsigned char) (start>>8))&0xff;
+	pccb->cmd[3]=((unsigned char) (start))&0xff;
+	pccb->cmd[4]=(unsigned char) blocks & 0xff;
+	pccb->cmd[5]=0;
+	pccb->cmdlen=6;
+	pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
+	PRINTF("scsi_setup_read6: cmd: %02X %02X startblk %02X%02X blccnt %02X\n",
+		pccb->cmd[0],pccb->cmd[1],
+		pccb->cmd[2],pccb->cmd[3],pccb->cmd[4]);
+}
+
+
+void scsi_setup_inquiry(ccb * pccb)
+{
+	pccb->cmd[0]=SCSI_INQUIRY;
+	pccb->cmd[1]=pccb->lun<<5;
+	pccb->cmd[2]=0;
+	pccb->cmd[3]=0;
+	if(pccb->datalen>255)
+		pccb->cmd[4]=255;
+	else
+		pccb->cmd[4]=(unsigned char)pccb->datalen;
+	pccb->cmd[5]=0;
+	pccb->cmdlen=6;
+	pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
+}
+
+#endif /* #if (CONFIG_COMMANDS & CFG_CMD_SCSI) */
+
+
diff --git a/common/cmd_usb.c b/common/cmd_usb.c
new file mode 100644
index 0000000..389f0fc
--- /dev/null
+++ b/common/cmd_usb.c
@@ -0,0 +1,595 @@
+/*
+ * (C) Copyright 2001
+ * Denis Peter, MPL AG Switzerland
+ *
+ * Most of this source has been derived from the Linux USB
+ * project.
+ *
+ * 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 <command.h>
+
+#if (CONFIG_COMMANDS & CFG_CMD_USB)
+
+#include <usb.h>
+#include <cmd_disk.h>
+
+#undef	CMD_USB_DEBUG
+
+#ifdef	CMD_USB_DEBUG
+#define	CMD_USB_PRINTF(fmt,args...)	printf (fmt ,##args)
+#else
+#define CMD_USB_PRINTF(fmt,args...)
+#endif
+static int usb_stor_curr_dev=-1; /* current device */
+
+/* somme display routines (info command) */
+char * usb_get_class_desc(unsigned char dclass)
+{
+	switch(dclass) {
+		case USB_CLASS_PER_INTERFACE:
+			return("See Interface");
+		case USB_CLASS_AUDIO:
+			return("Audio");
+		case USB_CLASS_COMM:
+			return("Communication");
+		case USB_CLASS_HID:
+			return("Human Interface");
+		case USB_CLASS_PRINTER:
+			return("Printer");
+		case USB_CLASS_MASS_STORAGE:
+			return("Mass Storage");
+		case USB_CLASS_HUB:
+			return("Hub");
+		case USB_CLASS_DATA:
+			return("CDC Data");
+		case USB_CLASS_VENDOR_SPEC:
+			return("Vendor specific");
+		default :
+			return("");
+	}
+}
+
+void usb_display_class_sub(unsigned char dclass,unsigned char subclass,unsigned char proto)
+{
+	switch(dclass) {
+		case USB_CLASS_PER_INTERFACE:
+			printf("See Interface");
+			break;
+		case USB_CLASS_HID:
+			printf("Human Interface, Subclass: ");
+			switch(subclass) {
+				case USB_SUB_HID_NONE:
+					printf("None");
+					break;
+				case USB_SUB_HID_BOOT:
+					printf("Boot ");
+					switch(proto) {
+						case USB_PROT_HID_NONE:
+							printf("None");
+							break;
+						case USB_PROT_HID_KEYBOARD:
+							printf("Keyboard");
+							break;
+						case USB_PROT_HID_MOUSE:
+							printf("Mouse");
+							break;
+						default:
+							printf("reserved");
+					}
+					break;
+				default:
+					printf("reserved");
+			}
+			break;
+		case USB_CLASS_MASS_STORAGE:
+			printf("Mass Storage, ");
+			switch(subclass) {
+				case US_SC_RBC:
+					printf("RBC ");
+					break;
+				case US_SC_8020:
+					printf("SFF-8020i (ATAPI)");
+					break;
+				case US_SC_QIC:
+					printf("QIC-157 (Tape)");
+					break;
+				case US_SC_UFI:
+					printf("UFI");
+					break;
+				case US_SC_8070:
+					printf("SFF-8070");
+					break;
+				case US_SC_SCSI:
+					printf("Transp. SCSI");
+					break;
+				default:
+					printf("reserved");
+					break;
+			}
+			printf(", ");
+			switch(proto) {
+				case US_PR_CB:
+					printf("Command/Bulk");
+					break;
+				case US_PR_CBI:
+					printf("Command/Bulk/Int");
+					break;
+				case US_PR_BULK:
+					printf("Bulk only");
+					break;
+				default:
+					printf("reserved");
+			}
+			break;
+		default:
+			printf("%s",usb_get_class_desc(dclass));
+	}
+}
+
+void usb_display_string(struct usb_device *dev,int index)
+{
+	char buffer[256];
+	if (index!=0) {
+		if (usb_string(dev,index,&buffer[0],256)>0);
+			printf("String: \"%s\"",buffer);
+	}
+}
+
+void usb_display_desc(struct usb_device *dev)
+{
+	if (dev->descriptor.bDescriptorType==USB_DT_DEVICE) {
+		printf("%d: %s,  USB Revision %x.%x\n",dev->devnum,usb_get_class_desc(dev->config.if_desc[0].bInterfaceClass),
+			(dev->descriptor.bcdUSB>>8) & 0xff,dev->descriptor.bcdUSB & 0xff);
+		if (strlen(dev->mf) || strlen(dev->prod) || strlen(dev->serial))
+			printf(" - %s %s %s\n",dev->mf,dev->prod,dev->serial);
+		if (dev->descriptor.bDeviceClass) {
+			printf(" - Class: ");
+			usb_display_class_sub(dev->descriptor.bDeviceClass,dev->descriptor.bDeviceSubClass,dev->descriptor.bDeviceProtocol);
+			printf("\n");
+		}
+		else {
+			printf(" - Class: (from Interface) %s\n",usb_get_class_desc(dev->config.if_desc[0].bInterfaceClass));
+		}
+		printf(" - PacketSize: %d  Configurations: %d\n",dev->descriptor.bMaxPacketSize0,dev->descriptor.bNumConfigurations);
+		printf(" - Vendor: 0x%04x  Product 0x%04x Version %d.%d\n",dev->descriptor.idVendor,dev->descriptor.idProduct,(dev->descriptor.bcdDevice>>8) & 0xff,dev->descriptor.bcdDevice & 0xff);
+	}
+
+}
+
+void usb_display_conf_desc(struct usb_config_descriptor *config,struct usb_device *dev)
+{
+	printf("   Configuration: %d\n",config->bConfigurationValue);
+	printf("   - Interfaces: %d %s%s%dmA\n",config->bNumInterfaces,(config->bmAttributes & 0x40) ? "Self Powered " : "Bus Powered ",
+	(config->bmAttributes & 0x20) ? "Remote Wakeup " : "",config->MaxPower*2);
+	if (config->iConfiguration) {
+		printf("   - ");
+		usb_display_string(dev,config->iConfiguration);
+		printf("\n");
+	}
+}
+
+void usb_display_if_desc(struct usb_interface_descriptor *ifdesc,struct usb_device *dev)
+{
+	printf("     Interface: %d\n",ifdesc->bInterfaceNumber);
+	printf("     - Alternate Settings %d, Endpoints: %d\n",ifdesc->bAlternateSetting,ifdesc->bNumEndpoints);
+	printf("     - Class ");
+	usb_display_class_sub(ifdesc->bInterfaceClass,ifdesc->bInterfaceSubClass,ifdesc->bInterfaceProtocol);
+	printf("\n");
+	if (ifdesc->iInterface) {
+		printf("     - ");
+		usb_display_string(dev,ifdesc->iInterface);
+		printf("\n");
+	}
+}
+
+void usb_display_ep_desc(struct usb_endpoint_descriptor *epdesc)
+{
+	printf("     - Endpoint %d %s ",epdesc->bEndpointAddress & 0xf,(epdesc->bEndpointAddress & 0x80) ? "In" : "Out");
+	switch((epdesc->bmAttributes & 0x03))
+	{
+		case 0: printf("Control"); break;
+		case 1: printf("Isochronous"); break;
+		case 2: printf("Bulk"); break;
+		case 3: printf("Interrupt"); break;
+	}
+	printf(" MaxPacket %d",epdesc->wMaxPacketSize);
+	if ((epdesc->bmAttributes & 0x03)==0x3)
+		printf(" Interval %dms",epdesc->bInterval);
+	printf("\n");
+}
+
+/* main routine to diasplay the configs, interfaces and endpoints */
+void usb_display_config(struct usb_device *dev)
+{
+	struct usb_config_descriptor *config;
+	struct usb_interface_descriptor *ifdesc;
+	struct usb_endpoint_descriptor *epdesc;
+	int i,ii;
+
+	config= &dev->config;
+	usb_display_conf_desc(config,dev);
+	for(i=0;i<config->no_of_if;i++) {
+		ifdesc= &config->if_desc[i];
+		usb_display_if_desc(ifdesc,dev);
+		for(ii=0;ii<ifdesc->no_of_ep;ii++) {
+			epdesc= &ifdesc->ep_desc[ii];
+			usb_display_ep_desc(epdesc);
+		}
+	}
+	printf("\n");
+}
+
+/* shows the device tree recursively */
+void usb_show_tree_graph(struct usb_device *dev,char *pre)
+{
+	int i,index;
+	int has_child,last_child,port;
+
+	index=strlen(pre);
+	printf(" %s",pre);
+	/* check if the device has connected children */
+	has_child=0;
+	for(i=0;i<dev->maxchild;i++) {
+		if (dev->children[i]!=NULL)
+			has_child=1;
+	}
+	/* check if we are the last one */
+	last_child=1;
+	if (dev->parent!=NULL) {
+		for(i=0;i<dev->parent->maxchild;i++) {
+			/* search for children */
+			if (dev->parent->children[i]==dev) {
+				/* found our pointer, see if we have a little sister */
+				port=i;
+				while(i++<dev->parent->maxchild) {
+					if (dev->parent->children[i]!=NULL) {
+						/* found a sister */
+						last_child=0;
+						break;
+					} /* if */
+				} /* while */
+			} /* device found */
+		} /* for all children of the parent */
+		printf("\b+-");
+		/* correct last child */
+		if (last_child) {
+			pre[index-1]=' ';
+		}
+	} /* if not root hub */
+	else
+		printf(" ");
+	printf("%d ",dev->devnum);
+	pre[index++]=' ';
+	pre[index++]= has_child ? '|' : ' ';
+	pre[index]=0;
+	printf(" %s (%s, %dmA)\n",usb_get_class_desc(dev->config.if_desc[0].bInterfaceClass),
+		dev->slow ? "1.5MBit/s" : "12MBit/s",dev->config.MaxPower * 2);
+	if (strlen(dev->mf) ||
+	   strlen(dev->prod) ||
+	   strlen(dev->serial))
+		printf(" %s  %s %s %s\n",pre,dev->mf,dev->prod,dev->serial);
+	printf(" %s\n",pre);
+	if (dev->maxchild>0) {
+		for(i=0;i<dev->maxchild;i++) {
+			if (dev->children[i]!=NULL) {
+				usb_show_tree_graph(dev->children[i],pre);
+				pre[index]=0;
+			}
+		}
+	}
+}
+
+/* main routine for the tree command */
+void usb_show_tree(struct usb_device *dev)
+{
+	char preamble[32];
+
+	memset(preamble,0,32);
+	usb_show_tree_graph(dev,&preamble[0]);
+}
+
+
+
+/******************************************************************************
+ * usb boot command intepreter. Derived from diskboot
+ */
+#ifdef CONFIG_USB_STORAGE
+int do_usbboot (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+	char *boot_device = NULL;
+	char *ep;
+	int dev, part=0, rcode;
+	ulong cnt;
+	ulong addr;
+	disk_partition_t info;
+	image_header_t *hdr;
+	block_dev_desc_t *stor_dev;
+
+
+	switch (argc) {
+	case 1:
+		addr = CFG_LOAD_ADDR;
+		boot_device = getenv ("bootdevice");
+		break;
+	case 2:
+		addr = simple_strtoul(argv[1], NULL, 16);
+		boot_device = getenv ("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);
+	stor_dev=usb_stor_get_dev(dev);
+	if (stor_dev->type == DEV_TYPE_UNKNOWN) {
+		printf ("\n** Device %d not available\n", dev);
+		return 1;
+	}
+	if (stor_dev->block_read==NULL) {
+		printf("storage device not initialized. Use usb scan\n");
+		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 (stor_dev, part, &info)) {
+		/* try to boot raw .... */
+		strncpy(&info.type[0], BOOT_PART_TYPE, sizeof(BOOT_PART_TYPE));
+		strncpy(&info.name[0], "Raw", 4);
+		info.start=0;
+		info.blksz=0x200;
+		info.size=2880;
+		printf("error reading partinfo...try to boot raw\n");
+	}
+	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 USB 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 (stor_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 (hdr->ih_magic == IH_MAGIC) {
+		print_image_hdr (hdr);
+		cnt = (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 (stor_dev->block_read (dev, info.start+1, cnt,
+		      (ulong *)(addr+info.blksz)) != cnt) {
+		printf ("\n** Read error on %d:%d\n", dev, part);
+		return 1;
+	}
+	/* Loading ok, update default load address */
+	load_addr = addr;
+
+	flush_cache (addr, (cnt+1)*info.blksz);
+
+	/* Check if we should attempt an auto-start */
+	if (((ep = getenv("autostart")) != NULL) && (strcmp(ep,"yes") == 0)) {
+		char *local_args[2];
+		extern int do_bootm (cmd_tbl_t *, int, int, char *[]);
+		local_args[0] = argv[0];
+		local_args[1] = NULL;
+		printf ("Automatic boot of image at addr 0x%08lX ...\n", addr);
+		rcode=do_bootm (cmdtp, 0, 1, local_args);
+		return rcode;
+	}
+	return 0;
+}
+#endif /* CONFIG_USB_STORAGE */
+
+
+
+/*********************************************************************************
+ * usb command intepreter
+ */
+int do_usb (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+
+	int i;
+	struct usb_device *dev = NULL;
+	block_dev_desc_t *stor_dev;
+
+	if ((strncmp(argv[1],"reset",5) == 0) ||
+		 (strncmp(argv[1],"start",5) == 0)){
+		usb_stop();
+		printf("(Re)start USB...\n");
+		usb_init();
+		return 0;
+	}
+	if (strncmp(argv[1],"stop",4) == 0) {
+#ifdef CONFIG_USB_KEYBOARD
+		if (argc==2) {
+			if (usb_kbd_deregister()!=0) {
+				printf("USB not stopped: usbkbd still using USB\n");
+				return 1;
+			}
+		}
+		else { /* forced stop, switch console in to serial */
+			console_assign(stdin,"serial");
+			usb_kbd_deregister();
+		}
+#endif
+		printf("stopping USB..\n");
+		usb_stop();
+		return 0;
+	}
+	if (strncmp(argv[1],"tree",4) == 0) {
+		printf("\nDevice Tree:\n");
+		usb_show_tree(usb_get_dev_index(0));
+		return 0;
+	}
+	if (strncmp(argv[1],"inf",3) == 0) {
+		int d;
+		if (argc==2) {
+			for(d=0;d<USB_MAX_DEVICE;d++) {
+				dev=usb_get_dev_index(d);
+				if (dev==NULL)
+					break;
+				usb_display_desc(dev);
+				usb_display_config(dev);
+			}
+			return 0;
+		}
+		else {
+			int d;
+
+			i=simple_strtoul(argv[2], NULL, 16);
+			printf("config for device %d\n",i);
+			for(d=0;d<USB_MAX_DEVICE;d++) {
+				dev=usb_get_dev_index(d);
+				if (dev==NULL)
+					break;
+				if (dev->devnum==i)
+					break;
+			}
+			if (dev==NULL) {
+				printf("*** NO Device avaiable ***\n");
+				return 0;
+			}
+			else {
+				usb_display_desc(dev);
+				usb_display_config(dev);
+			}
+		}
+		return 0;
+	}
+#ifdef CONFIG_USB_STORAGE
+	if (strncmp(argv[1],"scan",4) == 0) {
+		printf("Scan for storage device:\n");
+	 	usb_stor_curr_dev=usb_stor_scan(1);
+		if (usb_stor_curr_dev==-1) {
+			printf("No device found. Not initialized?\n");
+			return 1;
+		}
+		return 0;
+	}
+	if (strncmp(argv[1],"part",4) == 0) {
+		int devno, ok;
+		for (ok=0, devno=0; devno<USB_MAX_STOR_DEV; ++devno) {
+			stor_dev=usb_stor_get_dev(devno);
+			if (stor_dev->type!=DEV_TYPE_UNKNOWN) {
+				ok++;
+				if (devno)
+					printf("\n");
+				printf("print_part of %x\n",devno);
+				print_part(stor_dev);
+			}
+		}
+		if (!ok) {
+			printf("\nno USB devices available\n");
+			return 1;
+		}
+		return 0;
+	}
+	if (strcmp(argv[1],"read") == 0) {
+		if (usb_stor_curr_dev<0) {
+			printf("no current device selected\n");
+			return 1;
+		}
+		if (argc==5) {
+			unsigned long addr = simple_strtoul(argv[2], NULL, 16);
+			unsigned long blk  = simple_strtoul(argv[3], NULL, 16);
+			unsigned long cnt  = simple_strtoul(argv[4], NULL, 16);
+			unsigned long n;
+			printf ("\nUSB read: device %d block # %ld, count %ld ... ",
+					usb_stor_curr_dev, blk, cnt);
+			stor_dev=usb_stor_get_dev(usb_stor_curr_dev);
+			n = stor_dev->block_read(usb_stor_curr_dev, blk, cnt, (ulong *)addr);
+			printf ("%ld blocks read: %s\n",n,(n==cnt) ? "OK" : "ERROR");
+			if (n==cnt)
+				return 0;
+			return 1;
+		}
+	}
+	if (strcmp(argv[1],"dev") == 0) {
+		if (argc==3) {
+			int dev = (int)simple_strtoul(argv[2], NULL, 10);
+			printf ("\nUSB device %d: ", dev);
+			if (dev >= USB_MAX_STOR_DEV) {
+				printf("unknown device\n");
+				return 1;
+			}
+			printf ("\n    Device %d: ", dev);
+			stor_dev=usb_stor_get_dev(dev);
+			dev_print(stor_dev);
+			if (stor_dev->type == DEV_TYPE_UNKNOWN) {
+				return 1;
+			}
+			usb_stor_curr_dev = dev;
+			printf("... is now current device\n");
+			return 0;
+		}
+		else {
+			printf ("\nUSB device %d: ", usb_stor_curr_dev);
+			stor_dev=usb_stor_get_dev(usb_stor_curr_dev);
+			dev_print(stor_dev);
+			if (stor_dev->type == DEV_TYPE_UNKNOWN) {
+				return 1;
+			}
+			return 0;
+		}
+		return 0;
+	}
+#endif /* CONFIG_USB_STORAGE */
+	printf ("Usage:\n%s\n", cmdtp->usage);
+	return 1;
+}
+
+
+#endif /* (CONFIG_COMMANDS & CFG_CMD_USB) */
+
+