608 lines
16 KiB
C
608 lines
16 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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#if (CONFIG_COMMANDS & CFG_CMD_SCSI)
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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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#else
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#error CONFIG_SCSI_SYM53C8XX must be defined
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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[CFG_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_read_capacity(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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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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ulong scsi_read(int device, ulong blknr, ulong blkcnt, ulong *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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unsigned long capacity,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<CFG_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].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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}
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scsi_max_devs=0;
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for(i=0;i<CFG_SCSI_MAX_SCSI_ID;i++) {
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pccb->target=i;
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for(lun=0;lun<CFG_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(&scsi_dev_desc[scsi_max_devs].vendor[0],&tempbuff[8],8);
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scsi_ident_cpy(&scsi_dev_desc[scsi_max_devs].product[0],&tempbuff[16],16);
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scsi_ident_cpy(&scsi_dev_desc[scsi_max_devs].revision[0],&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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pccb->datalen=8;
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scsi_setup_read_capacity(pccb);
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if(scsi_exec(pccb)!=TRUE) {
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scsi_print_error(pccb);
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continue;
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}
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capacity=((unsigned long)tempbuff[0]<<24)|((unsigned long)tempbuff[1]<<16)|
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((unsigned long)tempbuff[2]<<8)|((unsigned long)tempbuff[3]);
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blksz=((unsigned long)tempbuff[4]<<24)|((unsigned long)tempbuff[5]<<16)|
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((unsigned long)tempbuff[6]<<8)|((unsigned long)tempbuff[7]);
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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].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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}
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void scsi_init(void)
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{
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int busdevfunc;
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busdevfunc=pci_find_device(SCSI_VEND_ID,SCSI_DEV_ID,0); /* get PCI Device ID */
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if(busdevfunc==-1) {
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printf("Error SCSI Controller (%04X,%04X) not found\n",SCSI_VEND_ID,SCSI_DEV_ID);
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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",SCSI_VEND_ID,SCSI_DEV_ID,(busdevfunc>>16)&0xFF,(busdevfunc>>11)&0x1F,(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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block_dev_desc_t * scsi_get_dev(int dev)
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{
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return((block_dev_desc_t *)&scsi_dev_desc[dev]);
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}
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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 *argv[])
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{
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char *boot_device = NULL;
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char *ep;
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int dev, part = 0;
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ulong addr, cnt, checksum;
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disk_partition_t info;
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image_header_t *hdr;
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int rcode = 0;
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switch (argc) {
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case 1:
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addr = CFG_LOAD_ADDR;
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boot_device = getenv ("bootdevice");
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break;
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case 2:
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addr = simple_strtoul(argv[1], NULL, 16);
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boot_device = getenv ("bootdevice");
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break;
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case 3:
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addr = simple_strtoul(argv[1], NULL, 16);
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boot_device = argv[2];
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break;
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default:
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printf ("Usage:\n%s\n", cmdtp->usage);
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return 1;
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}
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if (!boot_device) {
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puts ("\n** No boot device **\n");
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return 1;
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}
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dev = simple_strtoul(boot_device, &ep, 16);
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printf("booting from dev %d\n",dev);
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if (scsi_dev_desc[dev].type == DEV_TYPE_UNKNOWN) {
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printf ("\n** Device %d not available\n", dev);
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return 1;
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}
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if (*ep) {
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if (*ep != ':') {
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puts ("\n** Invalid boot device, use `dev[:part]' **\n");
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return 1;
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}
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part = simple_strtoul(++ep, NULL, 16);
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}
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if (get_partition_info (scsi_dev_desc, part, &info)) {
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printf("error reading partinfo\n");
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return 1;
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}
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if ((strncmp((char *)(info.type), BOOT_PART_TYPE, sizeof(info.type)) != 0) &&
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(strncmp((char *)(info.type), BOOT_PART_COMP, sizeof(info.type)) != 0)) {
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printf ("\n** Invalid partition type \"%.32s\""
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" (expect \"" BOOT_PART_TYPE "\")\n",
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info.type);
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return 1;
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}
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printf ("\nLoading from SCSI device %d, partition %d: "
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"Name: %.32s Type: %.32s\n",
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dev, part, info.name, info.type);
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debug ("First Block: %ld, # of blocks: %ld, Block Size: %ld\n",
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info.start, info.size, info.blksz);
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if (scsi_read (dev, info.start, 1, (ulong *)addr) != 1) {
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printf ("** Read error on %d:%d\n", dev, part);
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return 1;
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}
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hdr = (image_header_t *)addr;
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if (ntohl(hdr->ih_magic) == IH_MAGIC) {
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printf("\n** Bad Magic Number **\n");
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return 1;
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}
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checksum = ntohl(hdr->ih_hcrc);
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hdr->ih_hcrc = 0;
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if (crc32 (0, (uchar *)hdr, sizeof(image_header_t)) != checksum) {
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puts ("\n** Bad Header Checksum **\n");
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return 1;
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}
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hdr->ih_hcrc = htonl(checksum); /* restore checksum for later use */
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print_image_hdr (hdr);
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cnt = (ntohl(hdr->ih_size) + sizeof(image_header_t));
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cnt += info.blksz - 1;
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cnt /= info.blksz;
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cnt -= 1;
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if (scsi_read (dev, info.start+1, cnt,
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(ulong *)(addr+info.blksz)) != cnt) {
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printf ("** Read error on %d:%d\n", dev, part);
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return 1;
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}
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/* Loading ok, update default load address */
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load_addr = addr;
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flush_cache (addr, (cnt+1)*info.blksz);
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/* Check if we should attempt an auto-start */
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if (((ep = getenv("autostart")) != NULL) && (strcmp(ep,"yes") == 0)) {
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char *local_args[2];
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extern int do_bootm (cmd_tbl_t *, int, int, char *[]);
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local_args[0] = argv[0];
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local_args[1] = NULL;
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printf ("Automatic boot of image at addr 0x%08lX ...\n", addr);
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rcode = do_bootm (cmdtp, 0, 1, local_args);
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}
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return rcode;
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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 *argv[])
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{
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switch (argc) {
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case 0:
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case 1: printf ("Usage:\n%s\n", cmdtp->usage); return 1;
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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<CFG_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 >= CFG_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<CFG_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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printf ("Usage:\n%s\n", cmdtp->usage);
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return 1;
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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 >= CFG_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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printf ("Usage:\n%s\n", cmdtp->usage);
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return 1;
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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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}
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} /* switch */
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printf ("Usage:\n%s\n", cmdtp->usage);
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return 1;
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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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ulong scsi_read(int device, ulong blknr, ulong blkcnt, ulong *buffer)
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{
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ulong start,blks, 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 %lx, blccnt %lx buffer %lx\n",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 %lx, blccnt %x buffer %lx\n",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 %lx, blccnt %x buffer %lx\n",start,smallblks,buf_addr);
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return(blkcnt);
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}
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/* copy src to dest, skipping leading and trailing blanks
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* 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 */
|
|
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_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 - SCSI sub-system\n",
|
|
"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"
|
|
);
|
|
|
|
U_BOOT_CMD(
|
|
scsiboot, 3, 1, do_scsiboot,
|
|
"scsiboot- boot from SCSI device\n",
|
|
"loadAddr dev:part\n"
|
|
);
|
|
|
|
#endif /* #if (CONFIG_COMMANDS & CFG_CMD_SCSI) */
|