blob: d15b567dbb2411225c99b77eef0108f6a2e638b1 [file] [log] [blame]
/*
* (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 <asm/processor.h>
#include <scsi.h>
#include <image.h>
#include <pci.h>
#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
#elif defined CONFIG_SATA_ULI5288
#define SCSI_VEND_ID 0x10b9
#define SCSI_DEV_ID 0x5288
#elif !defined(CONFIG_SCSI_AHCI_PLAT)
#error no scsi device 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[CONFIG_SYS_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, void *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<CONFIG_SYS_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<CONFIG_SYS_SCSI_MAX_SCSI_ID;i++) {
pccb->target=i;
for(lun=0;lun<CONFIG_SYS_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) {
debug ("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((unsigned char *)&scsi_dev_desc[scsi_max_devs].vendor[0],
&tempbuff[8], 8);
scsi_ident_cpy((unsigned char *)&scsi_dev_desc[scsi_max_devs].product[0],
&tempbuff[16], 16);
scsi_ident_cpy((unsigned char *)&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;
}
#ifdef CONFIG_PCI
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);
}
#endif
#ifdef CONFIG_PARTITIONS
block_dev_desc_t * scsi_get_dev(int dev)
{
return (dev < CONFIG_SYS_SCSI_MAX_DEVICE) ? &scsi_dev_desc[dev] : NULL;
}
#endif
/******************************************************************************
* scsi boot command intepreter. Derived from diskboot
*/
int do_scsiboot (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
char *boot_device = NULL;
char *ep;
int dev, part = 0;
ulong addr, cnt;
disk_partition_t info;
image_header_t *hdr;
#if defined(CONFIG_FIT)
const void *fit_hdr = NULL;
#endif
switch (argc) {
case 1:
addr = CONFIG_SYS_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:
return CMD_RET_USAGE;
}
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((char *)(info.type), BOOT_PART_TYPE, sizeof(info.type)) != 0) &&
(strncmp((char *)(info.type), BOOT_PART_COMP, 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);
debug ("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;
}
switch (genimg_get_format ((void *)addr)) {
case IMAGE_FORMAT_LEGACY:
hdr = (image_header_t *)addr;
if (!image_check_hcrc (hdr)) {
puts ("\n** Bad Header Checksum **\n");
return 1;
}
image_print_contents (hdr);
cnt = image_get_image_size (hdr);
break;
#if defined(CONFIG_FIT)
case IMAGE_FORMAT_FIT:
fit_hdr = (const void *)addr;
puts ("Fit image detected...\n");
cnt = fit_get_size (fit_hdr);
break;
#endif
default:
puts ("** Unknown image type\n");
return 1;
}
cnt += info.blksz - 1;
cnt /= info.blksz;
cnt -= 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;
}
#if defined(CONFIG_FIT)
/* This cannot be done earlier, we need complete FIT image in RAM first */
if (genimg_get_format ((void *)addr) == IMAGE_FORMAT_FIT) {
if (!fit_check_format (fit_hdr)) {
puts ("** Bad FIT image format\n");
return 1;
}
fit_print_contents (fit_hdr);
}
#endif
/* Loading ok, update default load address */
load_addr = addr;
flush_cache (addr, (cnt+1)*info.blksz);
return bootm_maybe_autostart(cmdtp, argv[0]);
}
/*********************************************************************************
* scsi command intepreter
*/
int do_scsi (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
switch (argc) {
case 0:
case 1:
return CMD_RET_USAGE;
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<CONFIG_SYS_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 >= CONFIG_SYS_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<CONFIG_SYS_SCSI_MAX_DEVICE; ++dev) {
if (scsi_dev_desc[dev].type!=DEV_TYPE_UNKNOWN) {
ok++;
if (dev)
printf("\n");
debug ("print_part of %x\n",dev);
print_part(&scsi_dev_desc[dev]);
}
}
if (!ok)
printf("\nno SCSI devices available\n");
return 1;
}
return CMD_RET_USAGE;
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 >= CONFIG_SYS_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;
}
return CMD_RET_USAGE;
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 */
return CMD_RET_USAGE;
}
/****************************************************************************************
* 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, void *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;
debug ("\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;
}
debug ("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);
debug ("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 */
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 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'"
);
U_BOOT_CMD(
scsiboot, 3, 1, do_scsiboot,
"boot from SCSI device",
"loadAddr dev:part"
);