0472fbfd32
log2 of the device block size serves as the shift value used to calculate the block number to read in file systems when implementing avaiable block sizes. It is needed quite often in file systems thus it is pre-calculated and stored in the block device descriptor. Signed-off-by: Egbert Eich <eich@suse.com>
686 lines
19 KiB
C
686 lines
19 KiB
C
/*
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* (C) Copyright 2001
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* Denis Peter, MPL AG Switzerland
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*
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*
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*
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*/
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/*
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* SCSI support.
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*/
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#include <common.h>
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#include <command.h>
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#include <asm/processor.h>
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#include <scsi.h>
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#include <image.h>
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#include <pci.h>
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#ifdef CONFIG_SCSI_DEV_LIST
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#define SCSI_DEV_LIST CONFIG_SCSI_DEV_LIST
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#else
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#ifdef CONFIG_SCSI_SYM53C8XX
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#define SCSI_VEND_ID 0x1000
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#ifndef CONFIG_SCSI_DEV_ID
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#define SCSI_DEV_ID 0x0001
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#else
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#define SCSI_DEV_ID CONFIG_SCSI_DEV_ID
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#endif
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#elif defined CONFIG_SATA_ULI5288
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#define SCSI_VEND_ID 0x10b9
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#define SCSI_DEV_ID 0x5288
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#elif !defined(CONFIG_SCSI_AHCI_PLAT)
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#error no scsi device defined
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#endif
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#define SCSI_DEV_LIST {SCSI_VEND_ID, SCSI_DEV_ID}
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#endif
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#ifdef CONFIG_PCI
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const struct pci_device_id scsi_device_list[] = { SCSI_DEV_LIST };
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#endif
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static ccb tempccb; /* temporary scsi command buffer */
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static unsigned char tempbuff[512]; /* temporary data buffer */
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static int scsi_max_devs; /* number of highest available scsi device */
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static int scsi_curr_dev; /* current device */
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static block_dev_desc_t scsi_dev_desc[CONFIG_SYS_SCSI_MAX_DEVICE];
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/********************************************************************************
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* forward declerations of some Setup Routines
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*/
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void scsi_setup_test_unit_ready(ccb * pccb);
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void scsi_setup_read6(ccb * pccb, unsigned long start, unsigned short blocks);
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void scsi_setup_read_ext(ccb * pccb, unsigned long start, unsigned short blocks);
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static void scsi_setup_write_ext(ccb *pccb, unsigned long start,
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unsigned short blocks);
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void scsi_setup_inquiry(ccb * pccb);
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void scsi_ident_cpy (unsigned char *dest, unsigned char *src, unsigned int len);
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static int scsi_read_capacity(ccb *pccb, lbaint_t *capacity,
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unsigned long *blksz);
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static ulong scsi_read(int device, ulong blknr, lbaint_t blkcnt, void *buffer);
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static ulong scsi_write(int device, ulong blknr,
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lbaint_t blkcnt, const void *buffer);
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/*********************************************************************************
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* (re)-scan the scsi bus and reports scsi device info
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* to the user if mode = 1
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*/
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void scsi_scan(int mode)
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{
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unsigned char i,perq,modi,lun;
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lbaint_t capacity;
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unsigned long blksz;
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ccb* pccb=(ccb *)&tempccb;
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if(mode==1) {
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printf("scanning bus for devices...\n");
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}
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for(i=0;i<CONFIG_SYS_SCSI_MAX_DEVICE;i++) {
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scsi_dev_desc[i].target=0xff;
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scsi_dev_desc[i].lun=0xff;
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scsi_dev_desc[i].lba=0;
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scsi_dev_desc[i].blksz=0;
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scsi_dev_desc[i].log2blksz =
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LOG2_INVALID(typeof(scsi_dev_desc[i].log2blksz));
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scsi_dev_desc[i].type=DEV_TYPE_UNKNOWN;
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scsi_dev_desc[i].vendor[0]=0;
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scsi_dev_desc[i].product[0]=0;
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scsi_dev_desc[i].revision[0]=0;
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scsi_dev_desc[i].removable = false;
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scsi_dev_desc[i].if_type=IF_TYPE_SCSI;
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scsi_dev_desc[i].dev=i;
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scsi_dev_desc[i].part_type=PART_TYPE_UNKNOWN;
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scsi_dev_desc[i].block_read=scsi_read;
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scsi_dev_desc[i].block_write = scsi_write;
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}
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scsi_max_devs=0;
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for(i=0;i<CONFIG_SYS_SCSI_MAX_SCSI_ID;i++) {
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pccb->target=i;
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for(lun=0;lun<CONFIG_SYS_SCSI_MAX_LUN;lun++) {
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pccb->lun=lun;
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pccb->pdata=(unsigned char *)&tempbuff;
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pccb->datalen=512;
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scsi_setup_inquiry(pccb);
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if (scsi_exec(pccb) != true) {
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if(pccb->contr_stat==SCSI_SEL_TIME_OUT) {
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debug ("Selection timeout ID %d\n",pccb->target);
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continue; /* selection timeout => assuming no device present */
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}
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scsi_print_error(pccb);
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continue;
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}
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perq=tempbuff[0];
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modi=tempbuff[1];
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if((perq & 0x1f)==0x1f) {
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continue; /* skip unknown devices */
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}
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if((modi&0x80)==0x80) /* drive is removable */
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scsi_dev_desc[scsi_max_devs].removable=true;
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/* get info for this device */
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scsi_ident_cpy((unsigned char *)&scsi_dev_desc[scsi_max_devs].vendor[0],
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&tempbuff[8], 8);
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scsi_ident_cpy((unsigned char *)&scsi_dev_desc[scsi_max_devs].product[0],
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&tempbuff[16], 16);
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scsi_ident_cpy((unsigned char *)&scsi_dev_desc[scsi_max_devs].revision[0],
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&tempbuff[32], 4);
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scsi_dev_desc[scsi_max_devs].target=pccb->target;
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scsi_dev_desc[scsi_max_devs].lun=pccb->lun;
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pccb->datalen=0;
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scsi_setup_test_unit_ready(pccb);
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if (scsi_exec(pccb) != true) {
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if (scsi_dev_desc[scsi_max_devs].removable == true) {
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scsi_dev_desc[scsi_max_devs].type=perq;
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goto removable;
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}
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scsi_print_error(pccb);
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continue;
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}
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if (scsi_read_capacity(pccb, &capacity, &blksz)) {
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scsi_print_error(pccb);
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continue;
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}
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scsi_dev_desc[scsi_max_devs].lba=capacity;
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scsi_dev_desc[scsi_max_devs].blksz=blksz;
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scsi_dev_desc[scsi_max_devs].log2blksz =
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LOG2(scsi_dev_desc[scsi_max_devs].blksz);
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scsi_dev_desc[scsi_max_devs].type=perq;
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init_part(&scsi_dev_desc[scsi_max_devs]);
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removable:
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if(mode==1) {
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printf (" Device %d: ", scsi_max_devs);
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dev_print(&scsi_dev_desc[scsi_max_devs]);
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} /* if mode */
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scsi_max_devs++;
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} /* next LUN */
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}
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if(scsi_max_devs>0)
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scsi_curr_dev=0;
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else
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scsi_curr_dev = -1;
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printf("Found %d device(s).\n", scsi_max_devs);
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setenv_ulong("scsidevs", scsi_max_devs);
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}
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int scsi_get_disk_count(void)
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{
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return scsi_max_devs;
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}
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#ifdef CONFIG_PCI
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void scsi_init(void)
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{
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int busdevfunc;
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int i;
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/*
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* Find a device from the list, this driver will support a single
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* controller.
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*/
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for (i = 0; i < ARRAY_SIZE(scsi_device_list); i++) {
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/* get PCI Device ID */
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busdevfunc = pci_find_device(scsi_device_list[i].vendor,
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scsi_device_list[i].device,
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0);
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if (busdevfunc != -1)
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break;
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}
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if (busdevfunc == -1) {
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printf("Error: SCSI Controller(s) ");
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for (i = 0; i < ARRAY_SIZE(scsi_device_list); i++) {
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printf("%04X:%04X ",
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scsi_device_list[i].vendor,
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scsi_device_list[i].device);
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}
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printf("not found\n");
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return;
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}
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#ifdef DEBUG
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else {
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printf("SCSI Controller (%04X,%04X) found (%d:%d:%d)\n",
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scsi_device_list[i].vendor,
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scsi_device_list[i].device,
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(busdevfunc >> 16) & 0xFF,
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(busdevfunc >> 11) & 0x1F,
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(busdevfunc >> 8) & 0x7);
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}
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#endif
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scsi_low_level_init(busdevfunc);
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scsi_scan(1);
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}
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#endif
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#ifdef CONFIG_PARTITIONS
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block_dev_desc_t * scsi_get_dev(int dev)
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{
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return (dev < CONFIG_SYS_SCSI_MAX_DEVICE) ? &scsi_dev_desc[dev] : NULL;
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}
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#endif
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/******************************************************************************
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* scsi boot command intepreter. Derived from diskboot
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*/
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int do_scsiboot (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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{
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return common_diskboot(cmdtp, "scsi", argc, argv);
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}
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/*********************************************************************************
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* scsi command intepreter
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*/
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int do_scsi (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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{
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switch (argc) {
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case 0:
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case 1:
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return CMD_RET_USAGE;
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case 2:
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if (strncmp(argv[1],"res",3) == 0) {
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printf("\nReset SCSI\n");
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scsi_bus_reset();
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scsi_scan(1);
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return 0;
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}
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if (strncmp(argv[1],"inf",3) == 0) {
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int i;
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for (i=0; i<CONFIG_SYS_SCSI_MAX_DEVICE; ++i) {
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if(scsi_dev_desc[i].type==DEV_TYPE_UNKNOWN)
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continue; /* list only known devices */
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printf ("SCSI dev. %d: ", i);
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dev_print(&scsi_dev_desc[i]);
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}
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return 0;
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}
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if (strncmp(argv[1],"dev",3) == 0) {
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if ((scsi_curr_dev < 0) || (scsi_curr_dev >= CONFIG_SYS_SCSI_MAX_DEVICE)) {
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printf("\nno SCSI devices available\n");
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return 1;
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}
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printf ("\n Device %d: ", scsi_curr_dev);
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dev_print(&scsi_dev_desc[scsi_curr_dev]);
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return 0;
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}
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if (strncmp(argv[1],"scan",4) == 0) {
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scsi_scan(1);
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return 0;
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}
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if (strncmp(argv[1],"part",4) == 0) {
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int dev, ok;
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for (ok=0, dev=0; dev<CONFIG_SYS_SCSI_MAX_DEVICE; ++dev) {
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if (scsi_dev_desc[dev].type!=DEV_TYPE_UNKNOWN) {
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ok++;
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if (dev)
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printf("\n");
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debug ("print_part of %x\n",dev);
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print_part(&scsi_dev_desc[dev]);
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}
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}
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if (!ok)
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printf("\nno SCSI devices available\n");
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return 1;
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}
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return CMD_RET_USAGE;
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case 3:
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if (strncmp(argv[1],"dev",3) == 0) {
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int dev = (int)simple_strtoul(argv[2], NULL, 10);
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printf ("\nSCSI device %d: ", dev);
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if (dev >= CONFIG_SYS_SCSI_MAX_DEVICE) {
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printf("unknown device\n");
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return 1;
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}
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printf ("\n Device %d: ", dev);
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dev_print(&scsi_dev_desc[dev]);
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if(scsi_dev_desc[dev].type == DEV_TYPE_UNKNOWN) {
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return 1;
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}
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scsi_curr_dev = dev;
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printf("... is now current device\n");
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return 0;
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}
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if (strncmp(argv[1],"part",4) == 0) {
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int dev = (int)simple_strtoul(argv[2], NULL, 10);
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if(scsi_dev_desc[dev].type != DEV_TYPE_UNKNOWN) {
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print_part(&scsi_dev_desc[dev]);
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}
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else {
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printf ("\nSCSI device %d not available\n", dev);
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}
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return 1;
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}
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return CMD_RET_USAGE;
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default:
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/* at least 4 args */
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if (strcmp(argv[1],"read") == 0) {
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ulong addr = simple_strtoul(argv[2], NULL, 16);
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ulong blk = simple_strtoul(argv[3], NULL, 16);
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ulong cnt = simple_strtoul(argv[4], NULL, 16);
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ulong n;
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printf ("\nSCSI read: device %d block # %ld, count %ld ... ",
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scsi_curr_dev, blk, cnt);
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n = scsi_read(scsi_curr_dev, blk, cnt, (ulong *)addr);
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printf ("%ld blocks read: %s\n",n,(n==cnt) ? "OK" : "ERROR");
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return 0;
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} else if (strcmp(argv[1], "write") == 0) {
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ulong addr = simple_strtoul(argv[2], NULL, 16);
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ulong blk = simple_strtoul(argv[3], NULL, 16);
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ulong cnt = simple_strtoul(argv[4], NULL, 16);
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ulong n;
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printf("\nSCSI write: device %d block # %ld, "
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"count %ld ... ",
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scsi_curr_dev, blk, cnt);
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n = scsi_write(scsi_curr_dev, blk, cnt,
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(ulong *)addr);
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printf("%ld blocks written: %s\n", n,
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(n == cnt) ? "OK" : "ERROR");
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return 0;
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}
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} /* switch */
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return CMD_RET_USAGE;
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}
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/****************************************************************************************
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* scsi_read
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*/
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#define SCSI_MAX_READ_BLK 0xFFFF /* almost the maximum amount of the scsi_ext command.. */
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static ulong scsi_read(int device, ulong blknr, lbaint_t blkcnt, void *buffer)
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{
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lbaint_t start, blks;
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uintptr_t buf_addr;
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unsigned short smallblks;
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ccb* pccb=(ccb *)&tempccb;
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device&=0xff;
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/* Setup device
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*/
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pccb->target=scsi_dev_desc[device].target;
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pccb->lun=scsi_dev_desc[device].lun;
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buf_addr=(unsigned long)buffer;
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start=blknr;
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blks=blkcnt;
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debug("\nscsi_read: dev %d startblk " LBAF
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", blccnt " LBAF " buffer %lx\n",
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device, start, blks, (unsigned long)buffer);
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do {
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pccb->pdata=(unsigned char *)buf_addr;
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if(blks>SCSI_MAX_READ_BLK) {
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pccb->datalen=scsi_dev_desc[device].blksz * SCSI_MAX_READ_BLK;
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smallblks=SCSI_MAX_READ_BLK;
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scsi_setup_read_ext(pccb,start,smallblks);
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start+=SCSI_MAX_READ_BLK;
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blks-=SCSI_MAX_READ_BLK;
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}
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else {
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pccb->datalen=scsi_dev_desc[device].blksz * blks;
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smallblks=(unsigned short) blks;
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scsi_setup_read_ext(pccb,start,smallblks);
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start+=blks;
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blks=0;
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}
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debug("scsi_read_ext: startblk " LBAF
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", blccnt %x buffer %lx\n",
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start, smallblks, buf_addr);
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if (scsi_exec(pccb) != true) {
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scsi_print_error(pccb);
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blkcnt-=blks;
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break;
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}
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buf_addr+=pccb->datalen;
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} while(blks!=0);
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debug("scsi_read_ext: end startblk " LBAF
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", blccnt %x buffer %lx\n", start, smallblks, buf_addr);
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return(blkcnt);
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}
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/*******************************************************************************
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* scsi_write
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*/
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/* Almost the maximum amount of the scsi_ext command.. */
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#define SCSI_MAX_WRITE_BLK 0xFFFF
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static ulong scsi_write(int device, ulong blknr,
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lbaint_t blkcnt, const void *buffer)
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{
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lbaint_t start, blks;
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uintptr_t buf_addr;
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unsigned short smallblks;
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ccb* pccb = (ccb *)&tempccb;
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device &= 0xff;
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/* Setup device
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*/
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pccb->target = scsi_dev_desc[device].target;
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pccb->lun = scsi_dev_desc[device].lun;
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buf_addr = (unsigned long)buffer;
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start = blknr;
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blks = blkcnt;
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debug("\n%s: dev %d startblk " LBAF ", blccnt " LBAF " buffer %lx\n",
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__func__, device, start, blks, (unsigned long)buffer);
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do {
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pccb->pdata = (unsigned char *)buf_addr;
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if (blks > SCSI_MAX_WRITE_BLK) {
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pccb->datalen = (scsi_dev_desc[device].blksz *
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SCSI_MAX_WRITE_BLK);
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smallblks = SCSI_MAX_WRITE_BLK;
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scsi_setup_write_ext(pccb, start, smallblks);
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start += SCSI_MAX_WRITE_BLK;
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blks -= SCSI_MAX_WRITE_BLK;
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} else {
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pccb->datalen = scsi_dev_desc[device].blksz * blks;
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smallblks = (unsigned short)blks;
|
|
scsi_setup_write_ext(pccb, start, smallblks);
|
|
start += blks;
|
|
blks = 0;
|
|
}
|
|
debug("%s: startblk " LBAF ", blccnt %x buffer %lx\n",
|
|
__func__, start, smallblks, buf_addr);
|
|
if (scsi_exec(pccb) != true) {
|
|
scsi_print_error(pccb);
|
|
blkcnt -= blks;
|
|
break;
|
|
}
|
|
buf_addr += pccb->datalen;
|
|
} while (blks != 0);
|
|
debug("%s: end startblk " LBAF ", blccnt %x buffer %lx\n",
|
|
__func__, 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;
|
|
}
|
|
}
|
|
}
|
|
|
|
int scsi_read_capacity(ccb *pccb, lbaint_t *capacity, unsigned long *blksz)
|
|
{
|
|
*capacity = 0;
|
|
|
|
memset(pccb->cmd, 0, sizeof(pccb->cmd));
|
|
pccb->cmd[0] = SCSI_RD_CAPAC10;
|
|
pccb->cmd[1] = pccb->lun << 5;
|
|
pccb->cmdlen = 10;
|
|
pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
|
|
|
|
pccb->datalen = 8;
|
|
if (scsi_exec(pccb) != true)
|
|
return 1;
|
|
|
|
*capacity = ((lbaint_t)pccb->pdata[0] << 24) |
|
|
((lbaint_t)pccb->pdata[1] << 16) |
|
|
((lbaint_t)pccb->pdata[2] << 8) |
|
|
((lbaint_t)pccb->pdata[3]);
|
|
|
|
if (*capacity != 0xffffffff) {
|
|
/* Read capacity (10) was sufficient for this drive. */
|
|
*blksz = ((unsigned long)pccb->pdata[4] << 24) |
|
|
((unsigned long)pccb->pdata[5] << 16) |
|
|
((unsigned long)pccb->pdata[6] << 8) |
|
|
((unsigned long)pccb->pdata[7]);
|
|
return 0;
|
|
}
|
|
|
|
/* Read capacity (10) was insufficient. Use read capacity (16). */
|
|
|
|
memset(pccb->cmd, 0, sizeof(pccb->cmd));
|
|
pccb->cmd[0] = SCSI_RD_CAPAC16;
|
|
pccb->cmd[1] = 0x10;
|
|
pccb->cmdlen = 16;
|
|
pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
|
|
|
|
pccb->datalen = 16;
|
|
if (scsi_exec(pccb) != true)
|
|
return 1;
|
|
|
|
*capacity = ((uint64_t)pccb->pdata[0] << 56) |
|
|
((uint64_t)pccb->pdata[1] << 48) |
|
|
((uint64_t)pccb->pdata[2] << 40) |
|
|
((uint64_t)pccb->pdata[3] << 32) |
|
|
((uint64_t)pccb->pdata[4] << 24) |
|
|
((uint64_t)pccb->pdata[5] << 16) |
|
|
((uint64_t)pccb->pdata[6] << 8) |
|
|
((uint64_t)pccb->pdata[7]);
|
|
|
|
*blksz = ((uint64_t)pccb->pdata[8] << 56) |
|
|
((uint64_t)pccb->pdata[9] << 48) |
|
|
((uint64_t)pccb->pdata[10] << 40) |
|
|
((uint64_t)pccb->pdata[11] << 32) |
|
|
((uint64_t)pccb->pdata[12] << 24) |
|
|
((uint64_t)pccb->pdata[13] << 16) |
|
|
((uint64_t)pccb->pdata[14] << 8) |
|
|
((uint64_t)pccb->pdata[15]);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/************************************************************************************
|
|
* 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_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 */
|
|
debug ("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_write_ext(ccb *pccb, unsigned long start, unsigned short blocks)
|
|
{
|
|
pccb->cmd[0] = SCSI_WRITE10;
|
|
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[9] = 0;
|
|
pccb->cmdlen = 10;
|
|
pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
|
|
debug("%s: cmd: %02X %02X startblk %02X%02X%02X%02X blccnt %02X%02X\n",
|
|
__func__,
|
|
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 */
|
|
debug ("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 */
|
|
}
|
|
|
|
|
|
U_BOOT_CMD(
|
|
scsi, 5, 1, do_scsi,
|
|
"SCSI sub-system",
|
|
"reset - reset SCSI controller\n"
|
|
"scsi info - show available SCSI devices\n"
|
|
"scsi scan - (re-)scan SCSI bus\n"
|
|
"scsi device [dev] - show or set current device\n"
|
|
"scsi part [dev] - print partition table of one or all SCSI devices\n"
|
|
"scsi read addr blk# cnt - read `cnt' blocks starting at block `blk#'\n"
|
|
" to memory address `addr'\n"
|
|
"scsi write addr blk# cnt - write `cnt' blocks starting at block\n"
|
|
" `blk#' from memory address `addr'"
|
|
);
|
|
|
|
U_BOOT_CMD(
|
|
scsiboot, 3, 1, do_scsiboot,
|
|
"boot from SCSI device",
|
|
"loadAddr dev:part"
|
|
);
|