3 * Denis Peter, MPL AG, d.peter@mpl.ch.
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
37 #define PRINTF(fmt,args...) printf (fmt ,##args)
39 #define PRINTF(fmt,args...)
50 /*#if defined(CONFIG_CMD_DATE) */
54 #if defined(CONFIG_CMD_FDC) || defined(CONFIG_CMD_FDOS)
58 int flags; /* connected drives ect */
59 unsigned long blnr; /* Logical block nr */
60 uchar drive; /* drive no */
61 uchar cmdlen; /* cmd length */
62 uchar cmd[16]; /* cmd desc */
63 uchar dma; /* if > 0 dma enabled */
64 uchar result[11];/* status information */
65 uchar resultlen; /* lenght of result */
67 /* flags: only the lower 8bit used:
68 * bit 0 if set drive 0 is present
69 * bit 1 if set drive 1 is present
70 * bit 2 if set drive 2 is present
71 * bit 3 if set drive 3 is present
72 * bit 4 if set disk in drive 0 is inserted
73 * bit 5 if set disk in drive 1 is inserted
74 * bit 6 if set disk in drive 2 is inserted
75 * bit 7 if set disk in drive 4 is inserted
99 #define STATUS_TRACK 3
100 #define STATUS_HEAD 4
101 #define STATUS_SECT 5
102 #define STATUS_SECT_SIZE 6
105 /* Register addresses */
106 #define FDC_BASE 0x3F0
107 #define FDC_SRA FDC_BASE + 0 /* Status Register A */
108 #define FDC_SRB FDC_BASE + 1 /* Status Register B */
109 #define FDC_DOR FDC_BASE + 2 /* Digital Output Register */
110 #define FDC_TDR FDC_BASE + 3 /* Tape Drive Register */
111 #define FDC_DSR FDC_BASE + 4 /* Data rate Register */
112 #define FDC_MSR FDC_BASE + 4 /* Main Status Register */
113 #define FDC_FIFO FDC_BASE + 5 /* FIFO */
114 #define FDC_DIR FDC_BASE + 6 /* Digital Input Register */
115 #define FDC_CCR FDC_BASE + 7 /* Configuration Control */
117 #define FDC_CMD_SENSE_INT 0x08
118 #define FDC_CMD_CONFIGURE 0x13
119 #define FDC_CMD_SPECIFY 0x03
120 #define FDC_CMD_RECALIBRATE 0x07
121 #define FDC_CMD_READ 0x06
122 #define FDC_CMD_READ_TRACK 0x02
123 #define FDC_CMD_READ_ID 0x0A
124 #define FDC_CMD_DUMP_REG 0x0E
125 #define FDC_CMD_SEEK 0x0F
127 #define FDC_CMD_SENSE_INT_LEN 0x01
128 #define FDC_CMD_CONFIGURE_LEN 0x04
129 #define FDC_CMD_SPECIFY_LEN 0x03
130 #define FDC_CMD_RECALIBRATE_LEN 0x02
131 #define FDC_CMD_READ_LEN 0x09
132 #define FDC_CMD_READ_TRACK_LEN 0x09
133 #define FDC_CMD_READ_ID_LEN 0x02
134 #define FDC_CMD_DUMP_REG_LEN 0x01
135 #define FDC_CMD_SEEK_LEN 0x03
137 #define FDC_FIFO_THR 0x0C
138 #define FDC_FIFO_DIS 0x00
139 #define FDC_IMPLIED_SEEK 0x01
140 #define FDC_POLL_DIS 0x00
141 #define FDC_PRE_TRK 0x00
142 #define FDC_CONFIGURE FDC_FIFO_THR | (FDC_POLL_DIS<<4) | (FDC_FIFO_DIS<<5) | (FDC_IMPLIED_SEEK << 6)
143 #define FDC_MFM_MODE 0x01 /* MFM enable */
144 #define FDC_SKIP_MODE 0x00 /* skip enable */
146 #define FDC_TIME_OUT 100000 /* time out */
147 #define FDC_RW_RETRIES 3 /* read write retries */
148 #define FDC_CAL_RETRIES 3 /* calibration and seek retries */
153 unsigned int size; /* nr of sectors total */
154 unsigned int sect; /* sectors per track */
155 unsigned int head; /* nr of heads */
156 unsigned int track; /* nr of tracks */
157 unsigned int stretch; /* !=0 means double track steps */
158 unsigned char gap; /* gap1 size */
159 unsigned char rate; /* data rate. |= 0x40 for perpendicular */
160 unsigned char spec1; /* stepping rate, head unload time */
161 unsigned char fmt_gap; /* gap2 size */
162 unsigned char hlt; /* head load time */
163 unsigned char sect_code; /* Sector Size code */
164 const char * name; /* used only for predefined formats */
168 /* supported Floppy types (currently only one) */
169 const static FD_GEO_STRUCT floppy_type[2] = {
170 { 2880,18,2,80,0,0x1B,0x00,0xCF,0x6C,16,2,"H1440" }, /* 7 1.44MB 3.5" */
171 { 0, 0,0, 0,0,0x00,0x00,0x00,0x00, 0,0,NULL }, /* end of table */
174 static FDC_COMMAND_STRUCT cmd; /* global command struct */
176 /* If the boot drive number is undefined, we assume it's drive 0 */
177 #ifndef CFG_FDC_DRIVE_NUMBER
178 #define CFG_FDC_DRIVE_NUMBER 0
181 /* Hardware access */
182 #ifndef CFG_ISA_IO_STRIDE
183 #define CFG_ISA_IO_STRIDE 1
186 #ifndef CFG_ISA_IO_OFFSET
187 #define CFG_ISA_IO_OFFSET 0
191 #ifdef CONFIG_AMIGAONEG3SE
192 unsigned char INT6_Status;
194 void fdc_interrupt(void)
199 /* waits for an interrupt (polling) */
200 int wait_for_fdc_int(void)
202 unsigned long timeout;
203 timeout = FDC_TIME_OUT;
204 while(((volatile)INT6_Status & 0x80) == 0) {
207 if(timeout == 0) /* timeout occured */
215 /* Supporting Functions */
216 /* reads a Register of the FDC */
217 unsigned char read_fdc_reg(unsigned int addr)
219 volatile unsigned char *val =
220 (volatile unsigned char *)(CFG_ISA_IO_BASE_ADDRESS +
221 (addr * CFG_ISA_IO_STRIDE) +
227 /* writes a Register of the FDC */
228 void write_fdc_reg(unsigned int addr, unsigned char val)
230 volatile unsigned char *tmp =
231 (volatile unsigned char *)(CFG_ISA_IO_BASE_ADDRESS +
232 (addr * CFG_ISA_IO_STRIDE) +
237 #ifndef CONFIG_AMIGAONEG3SE
238 /* waits for an interrupt (polling) */
239 int wait_for_fdc_int(void)
241 unsigned long timeout;
242 timeout = FDC_TIME_OUT;
243 while((read_fdc_reg(FDC_SRA)&0x80)==0) {
246 if(timeout==0) /* timeout occured */
254 /* reads a byte from the FIFO of the FDC and checks direction and RQM bit
255 of the MSR. returns -1 if timeout, or byte if ok */
256 int read_fdc_byte(void)
258 unsigned long timeout;
259 timeout = FDC_TIME_OUT;
260 while((read_fdc_reg(FDC_MSR)&0xC0)!=0xC0) {
261 /* direction out and ready */
264 if(timeout==0) /* timeout occured */
267 return read_fdc_reg(FDC_FIFO);
270 /* if the direction of the FIFO is wrong, this routine is used to
271 empty the FIFO. Should _not_ be used */
272 int fdc_need_more_output(void)
275 while((read_fdc_reg(FDC_MSR)&0xC0)==0xC0) {
276 c=(unsigned char)read_fdc_byte();
277 printf("Error: more output: %x\n",c);
283 /* writes a byte to the FIFO of the FDC and checks direction and RQM bit
285 int write_fdc_byte(unsigned char val)
287 unsigned long timeout;
288 timeout = FDC_TIME_OUT;
289 while((read_fdc_reg(FDC_MSR)&0xC0)!=0x80) {
290 /* direction in and ready for byte */
293 fdc_need_more_output();
294 if(timeout==0) /* timeout occured */
297 write_fdc_reg(FDC_FIFO,val);
301 /* sets up all FDC commands and issues it to the FDC. If
302 the command causes direct results (no Execution Phase)
303 the result is be read as well. */
305 int fdc_issue_cmd(FDC_COMMAND_STRUCT *pCMD,FD_GEO_STRUCT *pFG)
308 unsigned long head,track,sect,timeout;
309 track = pCMD->blnr / (pFG->sect * pFG->head); /* track nr */
310 sect = pCMD->blnr % (pFG->sect * pFG->head); /* remaining blocks */
311 head = sect / pFG->sect; /* head nr */
312 sect = sect % pFG->sect; /* remaining blocks */
313 sect++; /* sectors are 1 based */
314 PRINTF("Cmd 0x%02x Track %ld, Head %ld, Sector %ld, Drive %d (blnr %ld)\n",
315 pCMD->cmd[0],track,head,sect,pCMD->drive,pCMD->blnr);
317 if(head|=0) { /* max heads = 2 */
318 pCMD->cmd[DRIVE]=pCMD->drive | 0x04; /* head 1 */
319 pCMD->cmd[HEAD]=(unsigned char) head; /* head register */
322 pCMD->cmd[DRIVE]=pCMD->drive; /* head 0 */
323 pCMD->cmd[HEAD]=(unsigned char) head; /* head register */
325 pCMD->cmd[TRACK]=(unsigned char) track; /* track */
326 switch (pCMD->cmd[COMMAND]) {
328 pCMD->cmd[SECTOR]=(unsigned char) sect; /* sector */
329 pCMD->cmd[SECTOR_SIZE]=pFG->sect_code; /* sector size code */
330 pCMD->cmd[LAST_TRACK]=pFG->sect; /* End of track */
331 pCMD->cmd[GAP]=pFG->gap; /* gap */
332 pCMD->cmd[DTL]=0xFF; /* DTL */
333 pCMD->cmdlen=FDC_CMD_READ_LEN;
334 pCMD->cmd[COMMAND]|=(FDC_MFM_MODE<<6); /* set MFM bit */
335 pCMD->cmd[COMMAND]|=(FDC_SKIP_MODE<<5); /* set Skip bit */
336 pCMD->resultlen=0; /* result only after execution */
339 pCMD->cmdlen=FDC_CMD_SEEK_LEN;
340 pCMD->resultlen=0; /* no result */
342 case FDC_CMD_CONFIGURE:
343 pCMD->cmd[CONFIG0]=0;
344 pCMD->cmd[CONFIG1]=FDC_CONFIGURE; /* FIFO Threshold, Poll, Enable FIFO */
345 pCMD->cmd[CONFIG2]=FDC_PRE_TRK; /* Precompensation Track */
346 pCMD->cmdlen=FDC_CMD_CONFIGURE_LEN;
347 pCMD->resultlen=0; /* no result */
349 case FDC_CMD_SPECIFY:
350 pCMD->cmd[SPEC_HUTSRT]=pFG->spec1;
351 pCMD->cmd[SPEC_HLT]=(pFG->hlt)<<1; /* head load time */
353 pCMD->cmd[SPEC_HLT]|=0x1; /* no dma */
354 pCMD->cmdlen=FDC_CMD_SPECIFY_LEN;
355 pCMD->resultlen=0; /* no result */
357 case FDC_CMD_DUMP_REG:
358 pCMD->cmdlen=FDC_CMD_DUMP_REG_LEN;
359 pCMD->resultlen=10; /* 10 byte result */
361 case FDC_CMD_READ_ID:
362 pCMD->cmd[COMMAND]|=(FDC_MFM_MODE<<6); /* set MFM bit */
363 pCMD->cmdlen=FDC_CMD_READ_ID_LEN;
364 pCMD->resultlen=7; /* 7 byte result */
366 case FDC_CMD_RECALIBRATE:
367 pCMD->cmd[DRIVE]&=0x03; /* don't set the head bit */
368 pCMD->cmdlen=FDC_CMD_RECALIBRATE_LEN;
369 pCMD->resultlen=0; /* no result */
372 case FDC_CMD_SENSE_INT:
373 pCMD->cmdlen=FDC_CMD_SENSE_INT_LEN;
377 for(i=0;i<pCMD->cmdlen;i++) {
378 /* PRINTF("write cmd%d = 0x%02X\n",i,pCMD->cmd[i]); */
379 if(write_fdc_byte(pCMD->cmd[i])==FALSE) {
380 PRINTF("Error: timeout while issue cmd%d\n",i);
384 timeout=FDC_TIME_OUT;
385 for(i=0;i<pCMD->resultlen;i++) {
386 while((read_fdc_reg(FDC_MSR)&0xC0)!=0xC0) {
389 PRINTF(" timeout while reading result%d MSR=0x%02X\n",i,read_fdc_reg(FDC_MSR));
393 pCMD->result[i]=(unsigned char)read_fdc_byte();
398 /* selects the drive assigned in the cmd structur and
399 switches on the Motor */
400 void select_fdc_drive(FDC_COMMAND_STRUCT *pCMD)
404 val=(1<<(4+pCMD->drive))|pCMD->drive|0xC; /* set reset, dma gate and motor bits */
405 if((read_fdc_reg(FDC_DOR)&val)!=val) {
406 write_fdc_reg(FDC_DOR,val);
407 for(val=0;val<255;val++)
408 udelay(500); /* wait some time to start motor */
412 /* switches off the Motor of the specified drive */
413 void stop_fdc_drive(FDC_COMMAND_STRUCT *pCMD)
417 val=(1<<(4+pCMD->drive))|pCMD->drive; /* sets motor bits */
418 write_fdc_reg(FDC_DOR,(read_fdc_reg(FDC_DOR)&~val));
421 /* issues a recalibrate command, waits for interrupt and
422 * issues a sense_interrupt */
423 int fdc_recalibrate(FDC_COMMAND_STRUCT *pCMD,FD_GEO_STRUCT *pFG)
425 pCMD->cmd[COMMAND]=FDC_CMD_RECALIBRATE;
426 if(fdc_issue_cmd(pCMD,pFG)==FALSE)
428 while(wait_for_fdc_int()!=TRUE);
429 pCMD->cmd[COMMAND]=FDC_CMD_SENSE_INT;
430 return(fdc_issue_cmd(pCMD,pFG));
433 /* issues a recalibrate command, waits for interrupt and
434 * issues a sense_interrupt */
435 int fdc_seek(FDC_COMMAND_STRUCT *pCMD,FD_GEO_STRUCT *pFG)
437 pCMD->cmd[COMMAND]=FDC_CMD_SEEK;
438 if(fdc_issue_cmd(pCMD,pFG)==FALSE)
440 while(wait_for_fdc_int()!=TRUE);
441 pCMD->cmd[COMMAND]=FDC_CMD_SENSE_INT;
442 return(fdc_issue_cmd(pCMD,pFG));
445 #ifndef CONFIG_AMIGAONEG3SE
446 /* terminates current command, by not servicing the FIFO
447 * waits for interrupt and fills in the result bytes */
448 int fdc_terminate(FDC_COMMAND_STRUCT *pCMD)
452 udelay(500); /* wait 500usec for fifo overrun */
453 while((read_fdc_reg(FDC_SRA)&0x80)==0x00); /* wait as long as no int has occured */
455 pCMD->result[i]=(unsigned char)read_fdc_byte();
460 #ifdef CONFIG_AMIGAONEG3SE
461 int fdc_terminate(FDC_COMMAND_STRUCT *pCMD)
465 udelay(500); /* wait 500usec for fifo overrun */
466 while((INT6_Status&0x80)==0x00); /* wait as long as no int has occured */
468 pCMD->result[i]=(unsigned char)read_fdc_byte();
476 #ifdef CONFIG_AMIGAONEG3SE
477 #define disable_interrupts() 0
478 #define enable_interrupts() (void)0
481 /* reads data from FDC, seek commands are issued automatic */
482 int fdc_read_data(unsigned char *buffer, unsigned long blocks,FDC_COMMAND_STRUCT *pCMD, FD_GEO_STRUCT *pFG)
484 /* first seek to start address */
485 unsigned long len,lastblk,readblk,i,timeout,ii,offset;
486 unsigned char pcn,c,retriesrw,retriescal;
487 unsigned char *bufferw; /* working buffer */
491 flags=disable_interrupts(); /* switch off all Interrupts */
492 select_fdc_drive(pCMD); /* switch on drive */
493 sect_size=0x080<<pFG->sect_code;
497 if(fdc_seek(pCMD,pFG)==FALSE) {
498 stop_fdc_drive(pCMD);
502 if((pCMD->result[STATUS_0]&0x20)!=0x20) {
503 printf("Seek error Status: %02X\n",pCMD->result[STATUS_0]);
504 stop_fdc_drive(pCMD);
508 pcn=pCMD->result[STATUS_PCN]; /* current track */
509 /* now determine the next seek point */
510 lastblk=pCMD->blnr + blocks;
511 /* readblk=(pFG->head*pFG->sect)-(pCMD->blnr%(pFG->head*pFG->sect)); */
512 readblk=pFG->sect-(pCMD->blnr%pFG->sect);
513 PRINTF("1st nr of block possible read %ld start %ld\n",readblk,pCMD->blnr);
514 if(readblk>blocks) /* is end within 1st track */
515 readblk=blocks; /* yes, correct it */
516 PRINTF("we read %ld blocks start %ld\n",readblk,pCMD->blnr);
517 bufferw=&buffer[0]; /* setup working buffer */
520 len=sect_size * readblk;
521 pCMD->cmd[COMMAND]=FDC_CMD_READ;
522 if(fdc_issue_cmd(pCMD,pFG)==FALSE) {
523 stop_fdc_drive(pCMD);
527 for (i=0;i<len;i++) {
528 timeout=FDC_TIME_OUT;
530 c=read_fdc_reg(FDC_MSR);
532 bufferw[i]=read_fdc_reg(FDC_FIFO);
535 if((c&0xC0)==0x80) { /* output */
536 PRINTF("Transfer error transfered: at %ld, MSR=%02X\n",i,c);
538 for(ii=0;ii<7;ii++) {
539 pCMD->result[ii]=bufferw[(i-7+ii)];
542 if(retriesrw++>FDC_RW_RETRIES) {
543 if (retriescal++>FDC_CAL_RETRIES) {
544 stop_fdc_drive(pCMD);
549 PRINTF(" trying to recalibrate Try %d\n",retriescal);
550 if(fdc_recalibrate(pCMD,pFG)==FALSE) {
551 stop_fdc_drive(pCMD);
557 } /* else >FDC_CAL_RETRIES */
560 PRINTF("Read retry %d\n",retriesrw);
562 } /* else >FDC_RW_RETRIES */
567 /* the last sector of a track or all data has been read,
568 * we need to get the results */
570 offset+=(sect_size*readblk); /* set up buffer pointer */
571 bufferw=&buffer[offset];
572 pCMD->blnr+=readblk; /* update current block nr */
573 blocks-=readblk; /* update blocks */
575 break; /* we are finish */
576 /* setup new read blocks */
577 /* readblk=pFG->head*pFG->sect; */
582 /* a seek is necessary */
583 if(fdc_seek(pCMD,pFG)==FALSE) {
584 stop_fdc_drive(pCMD);
588 if((pCMD->result[STATUS_0]&0x20)!=0x20) {
589 PRINTF("Seek error Status: %02X\n",pCMD->result[STATUS_0]);
590 stop_fdc_drive(pCMD);
593 pcn=pCMD->result[STATUS_PCN]; /* current track */
594 }while(TRUE); /* start over */
595 stop_fdc_drive(pCMD); /* switch off drive */
600 #ifdef CONFIG_AMIGAONEG3SE
601 #undef disable_interrupts()
602 #undef enable_interrupts()
605 /* Scan all drives and check if drive is present and disk is inserted */
606 int fdc_check_drive(FDC_COMMAND_STRUCT *pCMD, FD_GEO_STRUCT *pFG)
609 /* OK procedure of data book is satisfied.
610 * trying to get some information over the drives */
611 state=0; /* no drives, no disks */
612 for(drives=0;drives<4;drives++) {
614 select_fdc_drive(pCMD);
615 pCMD->blnr=0; /* set to the 1st block */
616 if(fdc_recalibrate(pCMD,pFG)==FALSE)
618 if((pCMD->result[STATUS_0]&0x10)==0x10)
620 /* ok drive connected check for disk */
622 pCMD->blnr=pFG->size; /* set to the last block */
623 if(fdc_seek(pCMD,pFG)==FALSE)
625 pCMD->blnr=0; /* set to the 1st block */
626 if(fdc_recalibrate(pCMD,pFG)==FALSE)
628 pCMD->cmd[COMMAND]=FDC_CMD_READ_ID;
629 if(fdc_issue_cmd(pCMD,pFG)==FALSE)
631 state|=(0x10<<drives);
633 stop_fdc_drive(pCMD);
635 PRINTF("Floppy Drive %d %sconnected %sDisk inserted %s\n",i,
636 ((state&(1<<i))==(1<<i)) ? "":"not ",
637 ((state&(0x10<<i))==(0x10<<i)) ? "":"no ",
638 ((state&(0x10<<i))==(0x10<<i)) ? pFG->name : "");
645 /**************************************************************************
647 * setup the fdc according the datasheet
648 * assuming in PS2 Mode
650 int fdc_setup(int drive, FDC_COMMAND_STRUCT *pCMD, FD_GEO_STRUCT *pFG)
654 #ifdef CONFIG_AMIGAONEG3SE
655 irq_install_handler(6, (interrupt_handler_t *)fdc_interrupt, NULL);
659 #ifdef CFG_FDC_HW_INIT
662 /* first, we reset the FDC via the DOR */
663 write_fdc_reg(FDC_DOR,0x00);
664 for(i=0; i<255; i++) /* then we wait some time */
666 /* then, we clear the reset in the DOR */
668 select_fdc_drive(pCMD);
669 /* initialize the CCR */
670 write_fdc_reg(FDC_CCR,pFG->rate);
671 /* then initialize the DSR */
672 write_fdc_reg(FDC_DSR,pFG->rate);
673 if(wait_for_fdc_int()==FALSE) {
674 PRINTF("Time Out after writing CCR\n");
677 /* now issue sense Interrupt and status command
678 * assuming only one drive present (drive 0) */
679 pCMD->dma=0; /* we don't use any dma at all */
681 /* issue sense interrupt for all 4 possible drives */
682 pCMD->cmd[COMMAND]=FDC_CMD_SENSE_INT;
683 if(fdc_issue_cmd(pCMD,pFG)==FALSE) {
684 PRINTF("Sense Interrupt for drive %d failed\n",i);
687 /* issue the configure command */
689 select_fdc_drive(pCMD);
690 pCMD->cmd[COMMAND]=FDC_CMD_CONFIGURE;
691 if(fdc_issue_cmd(pCMD,pFG)==FALSE) {
692 PRINTF(" configure timeout\n");
693 stop_fdc_drive(pCMD);
696 /* issue specify command */
697 pCMD->cmd[COMMAND]=FDC_CMD_SPECIFY;
698 if(fdc_issue_cmd(pCMD,pFG)==FALSE) {
699 PRINTF(" specify timeout\n");
700 stop_fdc_drive(pCMD);
704 /* then, we clear the reset in the DOR */
705 /* fdc_check_drive(pCMD,pFG); */
706 /* write_fdc_reg(FDC_DOR,0x04); */
712 #if defined(CONFIG_CMD_FDOS)
714 /* Low level functions for the Floppy-DOS layer */
716 /**************************************************************************
718 * initialize the FDC layer
721 int fdc_fdos_init (int drive)
723 FD_GEO_STRUCT *pFG = (FD_GEO_STRUCT *)floppy_type;
724 FDC_COMMAND_STRUCT *pCMD = &cmd;
726 /* setup FDC and scan for drives */
727 if(fdc_setup(drive,pCMD,pFG)==FALSE) {
728 printf("\n** Error in setup FDC **\n");
731 if(fdc_check_drive(pCMD,pFG)==FALSE) {
732 printf("\n** Error in check_drives **\n");
735 if((pCMD->flags&(1<<drive))==0) {
736 /* drive not available */
737 printf("\n** Drive %d not available **\n",drive);
740 if((pCMD->flags&(0x10<<drive))==0) {
741 /* no disk inserted */
742 printf("\n** No disk inserted in drive %d **\n",drive);
745 /* ok, we have a valid source */
748 /* read first block */
752 /**************************************************************************
754 * parameter is a block number
756 int fdc_fdos_seek (int where)
758 FD_GEO_STRUCT *pFG = (FD_GEO_STRUCT *)floppy_type;
759 FDC_COMMAND_STRUCT *pCMD = &cmd;
761 pCMD -> blnr = where ;
762 return (fdc_seek (pCMD, pFG));
764 /**************************************************************************
766 * the length is in block number
768 int fdc_fdos_read (void *buffer, int len)
770 FD_GEO_STRUCT *pFG = (FD_GEO_STRUCT *)floppy_type;
771 FDC_COMMAND_STRUCT *pCMD = &cmd;
773 return (fdc_read_data (buffer, len, pCMD, pFG));
777 #if defined(CONFIG_CMD_FDC)
778 /****************************************************************************
779 * main routine do_fdcboot
781 int do_fdcboot (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
783 FD_GEO_STRUCT *pFG = (FD_GEO_STRUCT *)floppy_type;
784 FDC_COMMAND_STRUCT *pCMD = &cmd;
785 unsigned long addr,imsize;
786 image_header_t *hdr; /* used for fdc boot */
787 unsigned char boot_drive;
791 #if defined(CONFIG_FIT)
797 addr = CFG_LOAD_ADDR;
798 boot_drive=CFG_FDC_DRIVE_NUMBER;
801 addr = simple_strtoul(argv[1], NULL, 16);
802 boot_drive=CFG_FDC_DRIVE_NUMBER;
805 addr = simple_strtoul(argv[1], NULL, 16);
806 boot_drive=simple_strtoul(argv[2], NULL, 10);
809 printf ("Usage:\n%s\n", cmdtp->usage);
812 /* setup FDC and scan for drives */
813 if(fdc_setup(boot_drive,pCMD,pFG)==FALSE) {
814 printf("\n** Error in setup FDC **\n");
817 if(fdc_check_drive(pCMD,pFG)==FALSE) {
818 printf("\n** Error in check_drives **\n");
821 if((pCMD->flags&(1<<boot_drive))==0) {
822 /* drive not available */
823 printf("\n** Drive %d not availabe **\n",boot_drive);
826 if((pCMD->flags&(0x10<<boot_drive))==0) {
827 /* no disk inserted */
828 printf("\n** No disk inserted in drive %d **\n",boot_drive);
831 /* ok, we have a valid source */
832 pCMD->drive=boot_drive;
833 /* read first block */
835 if(fdc_read_data((unsigned char *)addr,1,pCMD,pFG)==FALSE) {
836 printf("\nRead error:");
838 printf("result%d: 0x%02X\n",i,pCMD->result[i]);
842 switch (genimg_get_format ((void *)addr)) {
843 case IMAGE_FORMAT_LEGACY:
844 hdr = (image_header_t *)addr;
845 image_print_contents (hdr);
847 imsize = image_get_image_size (hdr);
849 #if defined(CONFIG_FIT)
850 case IMAGE_FORMAT_FIT:
851 fit_hdr = (const void *)addr;
852 if (!fit_check_format (fit_hdr)) {
853 puts ("** Bad FIT image format\n");
856 puts ("Fit image detected...\n");
858 imsize = fit_get_size (fit_hdr);
862 puts ("** Unknown image type\n");
869 printf("Loading %ld Bytes (%d blocks) at 0x%08lx..\n",imsize,nrofblk,addr);
871 if(fdc_read_data((unsigned char *)addr,nrofblk,pCMD,pFG)==FALSE) {
872 /* read image block */
873 printf("\nRead error:");
875 printf("result%d: 0x%02X\n",i,pCMD->result[i]);
878 printf("OK %ld Bytes loaded.\n",imsize);
880 flush_cache (addr, imsize);
882 #if defined(CONFIG_FIT)
883 /* This cannot be done earlier, we need complete FIT image in RAM first */
884 if (genimg_get_format ((void *)addr) == IMAGE_FORMAT_FIT)
885 fit_print_contents ((const void *)addr);
888 /* Loading ok, update default load address */
891 /* Check if we should attempt an auto-start */
892 if (((ep = getenv("autostart")) != NULL) && (strcmp(ep,"yes") == 0)) {
894 extern int do_bootm (cmd_tbl_t *, int, int, char *[]);
896 local_args[0] = argv[0];
897 local_args[1] = NULL;
899 printf ("Automatic boot of image at addr 0x%08lX ...\n", addr);
901 do_bootm (cmdtp, 0, 1, local_args);
911 /***************************************************/
914 #if defined(CONFIG_CMD_FDC)
917 fdcboot, 3, 1, do_fdcboot,
918 "fdcboot - boot from floppy device\n",