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...)
42 /*#if defined(CONFIG_CMD_DATE) */
47 int flags
; /* connected drives ect */
48 unsigned long blnr
; /* Logical block nr */
49 uchar drive
; /* drive no */
50 uchar cmdlen
; /* cmd length */
51 uchar cmd
[16]; /* cmd desc */
52 uchar dma
; /* if > 0 dma enabled */
53 uchar result
[11]; /* status information */
54 uchar resultlen
; /* lenght of result */
57 /* flags: only the lower 8bit used:
58 * bit 0 if set drive 0 is present
59 * bit 1 if set drive 1 is present
60 * bit 2 if set drive 2 is present
61 * bit 3 if set drive 3 is present
62 * bit 4 if set disk in drive 0 is inserted
63 * bit 5 if set disk in drive 1 is inserted
64 * bit 6 if set disk in drive 2 is inserted
65 * bit 7 if set disk in drive 4 is inserted
88 #define STATUS_TRACK 3
91 #define STATUS_SECT_SIZE 6
94 /* Register addresses */
95 #define FDC_BASE 0x3F0
96 #define FDC_SRA FDC_BASE + 0 /* Status Register A */
97 #define FDC_SRB FDC_BASE + 1 /* Status Register B */
98 #define FDC_DOR FDC_BASE + 2 /* Digital Output Register */
99 #define FDC_TDR FDC_BASE + 3 /* Tape Drive Register */
100 #define FDC_DSR FDC_BASE + 4 /* Data rate Register */
101 #define FDC_MSR FDC_BASE + 4 /* Main Status Register */
102 #define FDC_FIFO FDC_BASE + 5 /* FIFO */
103 #define FDC_DIR FDC_BASE + 6 /* Digital Input Register */
104 #define FDC_CCR FDC_BASE + 7 /* Configuration Control */
106 #define FDC_CMD_SENSE_INT 0x08
107 #define FDC_CMD_CONFIGURE 0x13
108 #define FDC_CMD_SPECIFY 0x03
109 #define FDC_CMD_RECALIBRATE 0x07
110 #define FDC_CMD_READ 0x06
111 #define FDC_CMD_READ_TRACK 0x02
112 #define FDC_CMD_READ_ID 0x0A
113 #define FDC_CMD_DUMP_REG 0x0E
114 #define FDC_CMD_SEEK 0x0F
116 #define FDC_CMD_SENSE_INT_LEN 0x01
117 #define FDC_CMD_CONFIGURE_LEN 0x04
118 #define FDC_CMD_SPECIFY_LEN 0x03
119 #define FDC_CMD_RECALIBRATE_LEN 0x02
120 #define FDC_CMD_READ_LEN 0x09
121 #define FDC_CMD_READ_TRACK_LEN 0x09
122 #define FDC_CMD_READ_ID_LEN 0x02
123 #define FDC_CMD_DUMP_REG_LEN 0x01
124 #define FDC_CMD_SEEK_LEN 0x03
126 #define FDC_FIFO_THR 0x0C
127 #define FDC_FIFO_DIS 0x00
128 #define FDC_IMPLIED_SEEK 0x01
129 #define FDC_POLL_DIS 0x00
130 #define FDC_PRE_TRK 0x00
131 #define FDC_CONFIGURE FDC_FIFO_THR | (FDC_POLL_DIS<<4) | (FDC_FIFO_DIS<<5) | (FDC_IMPLIED_SEEK << 6)
132 #define FDC_MFM_MODE 0x01 /* MFM enable */
133 #define FDC_SKIP_MODE 0x00 /* skip enable */
135 #define FDC_TIME_OUT 100000 /* time out */
136 #define FDC_RW_RETRIES 3 /* read write retries */
137 #define FDC_CAL_RETRIES 3 /* calibration and seek retries */
142 unsigned int size
; /* nr of sectors total */
143 unsigned int sect
; /* sectors per track */
144 unsigned int head
; /* nr of heads */
145 unsigned int track
; /* nr of tracks */
146 unsigned int stretch
; /* !=0 means double track steps */
147 unsigned char gap
; /* gap1 size */
148 unsigned char rate
; /* data rate. |= 0x40 for perpendicular */
149 unsigned char spec1
; /* stepping rate, head unload time */
150 unsigned char fmt_gap
;/* gap2 size */
151 unsigned char hlt
; /* head load time */
152 unsigned char sect_code
;/* Sector Size code */
153 const char * name
; /* used only for predefined formats */
157 /* supported Floppy types (currently only one) */
158 const static FD_GEO_STRUCT floppy_type
[2] = {
159 { 2880,18,2,80,0,0x1B,0x00,0xCF,0x6C,16,2,"H1440" }, /* 7 1.44MB 3.5" */
160 { 0, 0,0, 0,0,0x00,0x00,0x00,0x00, 0,0,NULL
}, /* end of table */
163 static FDC_COMMAND_STRUCT cmd
; /* global command struct */
165 /* If the boot drive number is undefined, we assume it's drive 0 */
166 #ifndef CONFIG_SYS_FDC_DRIVE_NUMBER
167 #define CONFIG_SYS_FDC_DRIVE_NUMBER 0
170 /* Hardware access */
171 #ifndef CONFIG_SYS_ISA_IO_STRIDE
172 #define CONFIG_SYS_ISA_IO_STRIDE 1
175 #ifndef CONFIG_SYS_ISA_IO_OFFSET
176 #define CONFIG_SYS_ISA_IO_OFFSET 0
179 /* Supporting Functions */
180 /* reads a Register of the FDC */
181 unsigned char read_fdc_reg(unsigned int addr
)
183 volatile unsigned char *val
=
184 (volatile unsigned char *)(CONFIG_SYS_ISA_IO_BASE_ADDRESS
+
185 (addr
* CONFIG_SYS_ISA_IO_STRIDE
) +
186 CONFIG_SYS_ISA_IO_OFFSET
);
191 /* writes a Register of the FDC */
192 void write_fdc_reg(unsigned int addr
, unsigned char val
)
194 volatile unsigned char *tmp
=
195 (volatile unsigned char *)(CONFIG_SYS_ISA_IO_BASE_ADDRESS
+
196 (addr
* CONFIG_SYS_ISA_IO_STRIDE
) +
197 CONFIG_SYS_ISA_IO_OFFSET
);
201 /* waits for an interrupt (polling) */
202 int wait_for_fdc_int(void)
204 unsigned long timeout
;
205 timeout
= FDC_TIME_OUT
;
206 while((read_fdc_reg(FDC_SRA
)&0x80)==0) {
209 if(timeout
==0) /* timeout occured */
215 /* reads a byte from the FIFO of the FDC and checks direction and RQM bit
216 of the MSR. returns -1 if timeout, or byte if ok */
217 int read_fdc_byte(void)
219 unsigned long timeout
;
220 timeout
= FDC_TIME_OUT
;
221 while((read_fdc_reg(FDC_MSR
)&0xC0)!=0xC0) {
222 /* direction out and ready */
225 if(timeout
==0) /* timeout occured */
228 return read_fdc_reg(FDC_FIFO
);
231 /* if the direction of the FIFO is wrong, this routine is used to
232 empty the FIFO. Should _not_ be used */
233 int fdc_need_more_output(void)
236 while((read_fdc_reg(FDC_MSR
)&0xC0)==0xC0) {
237 c
=(unsigned char)read_fdc_byte();
238 printf("Error: more output: %x\n",c
);
244 /* writes a byte to the FIFO of the FDC and checks direction and RQM bit
246 int write_fdc_byte(unsigned char val
)
248 unsigned long timeout
;
249 timeout
= FDC_TIME_OUT
;
250 while((read_fdc_reg(FDC_MSR
)&0xC0)!=0x80) {
251 /* direction in and ready for byte */
254 fdc_need_more_output();
255 if(timeout
==0) /* timeout occured */
258 write_fdc_reg(FDC_FIFO
,val
);
262 /* sets up all FDC commands and issues it to the FDC. If
263 the command causes direct results (no Execution Phase)
264 the result is be read as well. */
266 int fdc_issue_cmd(FDC_COMMAND_STRUCT
*pCMD
,FD_GEO_STRUCT
*pFG
)
269 unsigned long head
,track
,sect
,timeout
;
270 track
= pCMD
->blnr
/ (pFG
->sect
* pFG
->head
); /* track nr */
271 sect
= pCMD
->blnr
% (pFG
->sect
* pFG
->head
); /* remaining blocks */
272 head
= sect
/ pFG
->sect
; /* head nr */
273 sect
= sect
% pFG
->sect
; /* remaining blocks */
274 sect
++; /* sectors are 1 based */
275 PRINTF("Cmd 0x%02x Track %ld, Head %ld, Sector %ld, Drive %d (blnr %ld)\n",
276 pCMD
->cmd
[0],track
,head
,sect
,pCMD
->drive
,pCMD
->blnr
);
278 if(head
|=0) { /* max heads = 2 */
279 pCMD
->cmd
[DRIVE
]=pCMD
->drive
| 0x04; /* head 1 */
280 pCMD
->cmd
[HEAD
]=(unsigned char) head
; /* head register */
283 pCMD
->cmd
[DRIVE
]=pCMD
->drive
; /* head 0 */
284 pCMD
->cmd
[HEAD
]=(unsigned char) head
; /* head register */
286 pCMD
->cmd
[TRACK
]=(unsigned char) track
; /* track */
287 switch (pCMD
->cmd
[COMMAND
]) {
289 pCMD
->cmd
[SECTOR
]=(unsigned char) sect
; /* sector */
290 pCMD
->cmd
[SECTOR_SIZE
]=pFG
->sect_code
; /* sector size code */
291 pCMD
->cmd
[LAST_TRACK
]=pFG
->sect
; /* End of track */
292 pCMD
->cmd
[GAP
]=pFG
->gap
; /* gap */
293 pCMD
->cmd
[DTL
]=0xFF; /* DTL */
294 pCMD
->cmdlen
=FDC_CMD_READ_LEN
;
295 pCMD
->cmd
[COMMAND
]|=(FDC_MFM_MODE
<<6); /* set MFM bit */
296 pCMD
->cmd
[COMMAND
]|=(FDC_SKIP_MODE
<<5); /* set Skip bit */
297 pCMD
->resultlen
=0; /* result only after execution */
300 pCMD
->cmdlen
=FDC_CMD_SEEK_LEN
;
301 pCMD
->resultlen
=0; /* no result */
303 case FDC_CMD_CONFIGURE
:
304 pCMD
->cmd
[CONFIG0
]=0;
305 pCMD
->cmd
[CONFIG1
]=FDC_CONFIGURE
; /* FIFO Threshold, Poll, Enable FIFO */
306 pCMD
->cmd
[CONFIG2
]=FDC_PRE_TRK
; /* Precompensation Track */
307 pCMD
->cmdlen
=FDC_CMD_CONFIGURE_LEN
;
308 pCMD
->resultlen
=0; /* no result */
310 case FDC_CMD_SPECIFY
:
311 pCMD
->cmd
[SPEC_HUTSRT
]=pFG
->spec1
;
312 pCMD
->cmd
[SPEC_HLT
]=(pFG
->hlt
)<<1; /* head load time */
314 pCMD
->cmd
[SPEC_HLT
]|=0x1; /* no dma */
315 pCMD
->cmdlen
=FDC_CMD_SPECIFY_LEN
;
316 pCMD
->resultlen
=0; /* no result */
318 case FDC_CMD_DUMP_REG
:
319 pCMD
->cmdlen
=FDC_CMD_DUMP_REG_LEN
;
320 pCMD
->resultlen
=10; /* 10 byte result */
322 case FDC_CMD_READ_ID
:
323 pCMD
->cmd
[COMMAND
]|=(FDC_MFM_MODE
<<6); /* set MFM bit */
324 pCMD
->cmdlen
=FDC_CMD_READ_ID_LEN
;
325 pCMD
->resultlen
=7; /* 7 byte result */
327 case FDC_CMD_RECALIBRATE
:
328 pCMD
->cmd
[DRIVE
]&=0x03; /* don't set the head bit */
329 pCMD
->cmdlen
=FDC_CMD_RECALIBRATE_LEN
;
330 pCMD
->resultlen
=0; /* no result */
333 case FDC_CMD_SENSE_INT
:
334 pCMD
->cmdlen
=FDC_CMD_SENSE_INT_LEN
;
338 for(i
=0;i
<pCMD
->cmdlen
;i
++) {
339 /* PRINTF("write cmd%d = 0x%02X\n",i,pCMD->cmd[i]); */
340 if (write_fdc_byte(pCMD
->cmd
[i
]) == false) {
341 PRINTF("Error: timeout while issue cmd%d\n",i
);
345 timeout
=FDC_TIME_OUT
;
346 for(i
=0;i
<pCMD
->resultlen
;i
++) {
347 while((read_fdc_reg(FDC_MSR
)&0xC0)!=0xC0) {
350 PRINTF(" timeout while reading result%d MSR=0x%02X\n",i
,read_fdc_reg(FDC_MSR
));
354 pCMD
->result
[i
]=(unsigned char)read_fdc_byte();
359 /* selects the drive assigned in the cmd structur and
360 switches on the Motor */
361 void select_fdc_drive(FDC_COMMAND_STRUCT
*pCMD
)
365 val
=(1<<(4+pCMD
->drive
))|pCMD
->drive
|0xC; /* set reset, dma gate and motor bits */
366 if((read_fdc_reg(FDC_DOR
)&val
)!=val
) {
367 write_fdc_reg(FDC_DOR
,val
);
368 for(val
=0;val
<255;val
++)
369 udelay(500); /* wait some time to start motor */
373 /* switches off the Motor of the specified drive */
374 void stop_fdc_drive(FDC_COMMAND_STRUCT
*pCMD
)
378 val
=(1<<(4+pCMD
->drive
))|pCMD
->drive
; /* sets motor bits */
379 write_fdc_reg(FDC_DOR
,(read_fdc_reg(FDC_DOR
)&~val
));
382 /* issues a recalibrate command, waits for interrupt and
383 * issues a sense_interrupt */
384 int fdc_recalibrate(FDC_COMMAND_STRUCT
*pCMD
,FD_GEO_STRUCT
*pFG
)
386 pCMD
->cmd
[COMMAND
]=FDC_CMD_RECALIBRATE
;
387 if (fdc_issue_cmd(pCMD
, pFG
) == false)
389 while (wait_for_fdc_int() != true);
391 pCMD
->cmd
[COMMAND
]=FDC_CMD_SENSE_INT
;
392 return(fdc_issue_cmd(pCMD
,pFG
));
395 /* issues a recalibrate command, waits for interrupt and
396 * issues a sense_interrupt */
397 int fdc_seek(FDC_COMMAND_STRUCT
*pCMD
,FD_GEO_STRUCT
*pFG
)
399 pCMD
->cmd
[COMMAND
]=FDC_CMD_SEEK
;
400 if (fdc_issue_cmd(pCMD
, pFG
) == false)
402 while (wait_for_fdc_int() != true);
404 pCMD
->cmd
[COMMAND
]=FDC_CMD_SENSE_INT
;
405 return(fdc_issue_cmd(pCMD
,pFG
));
408 /* terminates current command, by not servicing the FIFO
409 * waits for interrupt and fills in the result bytes */
410 int fdc_terminate(FDC_COMMAND_STRUCT
*pCMD
)
414 udelay(500); /* wait 500usec for fifo overrun */
415 while((read_fdc_reg(FDC_SRA
)&0x80)==0x00); /* wait as long as no int has occured */
417 pCMD
->result
[i
]=(unsigned char)read_fdc_byte();
422 /* reads data from FDC, seek commands are issued automatic */
423 int fdc_read_data(unsigned char *buffer
, unsigned long blocks
,FDC_COMMAND_STRUCT
*pCMD
, FD_GEO_STRUCT
*pFG
)
425 /* first seek to start address */
426 unsigned long len
,readblk
,i
,timeout
,ii
,offset
;
427 unsigned char c
,retriesrw
,retriescal
;
428 unsigned char *bufferw
; /* working buffer */
432 flags
=disable_interrupts(); /* switch off all Interrupts */
433 select_fdc_drive(pCMD
); /* switch on drive */
434 sect_size
=0x080<<pFG
->sect_code
;
438 if (fdc_seek(pCMD
, pFG
) == false) {
439 stop_fdc_drive(pCMD
);
444 if((pCMD
->result
[STATUS_0
]&0x20)!=0x20) {
445 printf("Seek error Status: %02X\n",pCMD
->result
[STATUS_0
]);
446 stop_fdc_drive(pCMD
);
451 /* now determine the next seek point */
452 /* lastblk=pCMD->blnr + blocks; */
453 /* readblk=(pFG->head*pFG->sect)-(pCMD->blnr%(pFG->head*pFG->sect)); */
454 readblk
=pFG
->sect
-(pCMD
->blnr
%pFG
->sect
);
455 PRINTF("1st nr of block possible read %ld start %ld\n",readblk
,pCMD
->blnr
);
456 if(readblk
>blocks
) /* is end within 1st track */
457 readblk
=blocks
; /* yes, correct it */
458 PRINTF("we read %ld blocks start %ld\n",readblk
,pCMD
->blnr
);
459 bufferw
= &buffer
[0]; /* setup working buffer */
462 len
=sect_size
* readblk
;
463 pCMD
->cmd
[COMMAND
]=FDC_CMD_READ
;
464 if (fdc_issue_cmd(pCMD
, pFG
) == false) {
465 stop_fdc_drive(pCMD
);
470 for (i
=0;i
<len
;i
++) {
471 timeout
=FDC_TIME_OUT
;
473 c
=read_fdc_reg(FDC_MSR
);
475 bufferw
[i
]=read_fdc_reg(FDC_FIFO
);
478 if((c
&0xC0)==0x80) { /* output */
479 PRINTF("Transfer error transfered: at %ld, MSR=%02X\n",i
,c
);
481 for(ii
=0;ii
<7;ii
++) {
482 pCMD
->result
[ii
]=bufferw
[(i
-7+ii
)];
485 if(retriesrw
++>FDC_RW_RETRIES
) {
486 if (retriescal
++>FDC_CAL_RETRIES
) {
487 stop_fdc_drive(pCMD
);
493 PRINTF(" trying to recalibrate Try %d\n",retriescal
);
494 if (fdc_recalibrate(pCMD
, pFG
) == false) {
495 stop_fdc_drive(pCMD
);
502 } /* else >FDC_CAL_RETRIES */
505 PRINTF("Read retry %d\n",retriesrw
);
507 } /* else >FDC_RW_RETRIES */
512 /* the last sector of a track or all data has been read,
513 * we need to get the results */
515 offset
+=(sect_size
*readblk
); /* set up buffer pointer */
516 bufferw
= &buffer
[offset
];
517 pCMD
->blnr
+=readblk
; /* update current block nr */
518 blocks
-=readblk
; /* update blocks */
520 break; /* we are finish */
521 /* setup new read blocks */
522 /* readblk=pFG->head*pFG->sect; */
527 /* a seek is necessary */
528 if (fdc_seek(pCMD
, pFG
) == false) {
529 stop_fdc_drive(pCMD
);
534 if((pCMD
->result
[STATUS_0
]&0x20)!=0x20) {
535 PRINTF("Seek error Status: %02X\n",pCMD
->result
[STATUS_0
]);
536 stop_fdc_drive(pCMD
);
539 } while (true); /* start over */
540 stop_fdc_drive(pCMD
); /* switch off drive */
546 /* Scan all drives and check if drive is present and disk is inserted */
547 int fdc_check_drive(FDC_COMMAND_STRUCT
*pCMD
, FD_GEO_STRUCT
*pFG
)
550 /* OK procedure of data book is satisfied.
551 * trying to get some information over the drives */
552 state
=0; /* no drives, no disks */
553 for(drives
=0;drives
<4;drives
++) {
555 select_fdc_drive(pCMD
);
556 pCMD
->blnr
=0; /* set to the 1st block */
557 if (fdc_recalibrate(pCMD
, pFG
) == false)
559 if((pCMD
->result
[STATUS_0
]&0x10)==0x10)
561 /* ok drive connected check for disk */
563 pCMD
->blnr
=pFG
->size
; /* set to the last block */
564 if (fdc_seek(pCMD
, pFG
) == false)
566 pCMD
->blnr
=0; /* set to the 1st block */
567 if (fdc_recalibrate(pCMD
, pFG
) == false)
569 pCMD
->cmd
[COMMAND
]=FDC_CMD_READ_ID
;
570 if (fdc_issue_cmd(pCMD
, pFG
) == false)
572 state
|=(0x10<<drives
);
574 stop_fdc_drive(pCMD
);
576 PRINTF("Floppy Drive %d %sconnected %sDisk inserted %s\n",i
,
577 ((state
&(1<<i
))==(1<<i
)) ? "":"not ",
578 ((state
&(0x10<<i
))==(0x10<<i
)) ? "":"no ",
579 ((state
&(0x10<<i
))==(0x10<<i
)) ? pFG
->name
: "");
586 /**************************************************************************
588 * setup the fdc according the datasheet
589 * assuming in PS2 Mode
591 int fdc_setup(int drive
, FDC_COMMAND_STRUCT
*pCMD
, FD_GEO_STRUCT
*pFG
)
595 #ifdef CONFIG_SYS_FDC_HW_INIT
598 /* first, we reset the FDC via the DOR */
599 write_fdc_reg(FDC_DOR
,0x00);
600 for(i
=0; i
<255; i
++) /* then we wait some time */
602 /* then, we clear the reset in the DOR */
604 select_fdc_drive(pCMD
);
605 /* initialize the CCR */
606 write_fdc_reg(FDC_CCR
,pFG
->rate
);
607 /* then initialize the DSR */
608 write_fdc_reg(FDC_DSR
,pFG
->rate
);
609 if (wait_for_fdc_int() == false) {
610 PRINTF("Time Out after writing CCR\n");
613 /* now issue sense Interrupt and status command
614 * assuming only one drive present (drive 0) */
615 pCMD
->dma
=0; /* we don't use any dma at all */
617 /* issue sense interrupt for all 4 possible drives */
618 pCMD
->cmd
[COMMAND
]=FDC_CMD_SENSE_INT
;
619 if (fdc_issue_cmd(pCMD
, pFG
) == false) {
620 PRINTF("Sense Interrupt for drive %d failed\n",i
);
623 /* issue the configure command */
625 select_fdc_drive(pCMD
);
626 pCMD
->cmd
[COMMAND
]=FDC_CMD_CONFIGURE
;
627 if (fdc_issue_cmd(pCMD
, pFG
) == false) {
628 PRINTF(" configure timeout\n");
629 stop_fdc_drive(pCMD
);
632 /* issue specify command */
633 pCMD
->cmd
[COMMAND
]=FDC_CMD_SPECIFY
;
634 if (fdc_issue_cmd(pCMD
, pFG
) == false) {
635 PRINTF(" specify timeout\n");
636 stop_fdc_drive(pCMD
);
640 /* then, we clear the reset in the DOR */
641 /* fdc_check_drive(pCMD,pFG); */
642 /* write_fdc_reg(FDC_DOR,0x04); */
647 #if defined(CONFIG_CMD_FDOS)
649 /* Low level functions for the Floppy-DOS layer */
651 /**************************************************************************
653 * initialize the FDC layer
656 int fdc_fdos_init (int drive
)
658 FD_GEO_STRUCT
*pFG
= (FD_GEO_STRUCT
*)floppy_type
;
659 FDC_COMMAND_STRUCT
*pCMD
= &cmd
;
661 /* setup FDC and scan for drives */
662 if (fdc_setup(drive
, pCMD
, pFG
) == false) {
663 printf("\n** Error in setup FDC **\n");
666 if (fdc_check_drive(pCMD
, pFG
) == false) {
667 printf("\n** Error in check_drives **\n");
670 if((pCMD
->flags
&(1<<drive
))==0) {
671 /* drive not available */
672 printf("\n** Drive %d not available **\n",drive
);
675 if((pCMD
->flags
&(0x10<<drive
))==0) {
676 /* no disk inserted */
677 printf("\n** No disk inserted in drive %d **\n",drive
);
680 /* ok, we have a valid source */
683 /* read first block */
687 /**************************************************************************
689 * parameter is a block number
691 int fdc_fdos_seek (int where
)
693 FD_GEO_STRUCT
*pFG
= (FD_GEO_STRUCT
*)floppy_type
;
694 FDC_COMMAND_STRUCT
*pCMD
= &cmd
;
696 pCMD
-> blnr
= where
;
697 return (fdc_seek (pCMD
, pFG
));
699 /**************************************************************************
701 * the length is in block number
703 int fdc_fdos_read (void *buffer
, int len
)
705 FD_GEO_STRUCT
*pFG
= (FD_GEO_STRUCT
*)floppy_type
;
706 FDC_COMMAND_STRUCT
*pCMD
= &cmd
;
708 return (fdc_read_data (buffer
, len
, pCMD
, pFG
));
712 #if defined(CONFIG_CMD_FDC)
713 /****************************************************************************
714 * main routine do_fdcboot
716 int do_fdcboot (cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
718 FD_GEO_STRUCT
*pFG
= (FD_GEO_STRUCT
*)floppy_type
;
719 FDC_COMMAND_STRUCT
*pCMD
= &cmd
;
720 unsigned long addr
,imsize
;
721 image_header_t
*hdr
; /* used for fdc boot */
722 unsigned char boot_drive
;
724 #if defined(CONFIG_FIT)
725 const void *fit_hdr
= NULL
;
730 addr
= CONFIG_SYS_LOAD_ADDR
;
731 boot_drive
=CONFIG_SYS_FDC_DRIVE_NUMBER
;
734 addr
= simple_strtoul(argv
[1], NULL
, 16);
735 boot_drive
=CONFIG_SYS_FDC_DRIVE_NUMBER
;
738 addr
= simple_strtoul(argv
[1], NULL
, 16);
739 boot_drive
=simple_strtoul(argv
[2], NULL
, 10);
742 return CMD_RET_USAGE
;
744 /* setup FDC and scan for drives */
745 if (fdc_setup(boot_drive
, pCMD
, pFG
) == false) {
746 printf("\n** Error in setup FDC **\n");
749 if (fdc_check_drive(pCMD
, pFG
) == false) {
750 printf("\n** Error in check_drives **\n");
753 if((pCMD
->flags
&(1<<boot_drive
))==0) {
754 /* drive not available */
755 printf("\n** Drive %d not availabe **\n",boot_drive
);
758 if((pCMD
->flags
&(0x10<<boot_drive
))==0) {
759 /* no disk inserted */
760 printf("\n** No disk inserted in drive %d **\n",boot_drive
);
763 /* ok, we have a valid source */
764 pCMD
->drive
=boot_drive
;
765 /* read first block */
767 if (fdc_read_data((unsigned char *)addr
, 1, pCMD
, pFG
) == false) {
768 printf("\nRead error:");
770 printf("result%d: 0x%02X\n",i
,pCMD
->result
[i
]);
774 switch (genimg_get_format ((void *)addr
)) {
775 case IMAGE_FORMAT_LEGACY
:
776 hdr
= (image_header_t
*)addr
;
777 image_print_contents (hdr
);
779 imsize
= image_get_image_size (hdr
);
781 #if defined(CONFIG_FIT)
782 case IMAGE_FORMAT_FIT
:
783 fit_hdr
= (const void *)addr
;
784 puts ("Fit image detected...\n");
786 imsize
= fit_get_size (fit_hdr
);
790 puts ("** Unknown image type\n");
797 printf("Loading %ld Bytes (%d blocks) at 0x%08lx..\n",imsize
,nrofblk
,addr
);
799 if (fdc_read_data((unsigned char *)addr
, nrofblk
, pCMD
, pFG
) == false) {
800 /* read image block */
801 printf("\nRead error:");
803 printf("result%d: 0x%02X\n",i
,pCMD
->result
[i
]);
806 printf("OK %ld Bytes loaded.\n",imsize
);
808 flush_cache (addr
, imsize
);
810 #if defined(CONFIG_FIT)
811 /* This cannot be done earlier, we need complete FIT image in RAM first */
812 if (genimg_get_format ((void *)addr
) == IMAGE_FORMAT_FIT
) {
813 if (!fit_check_format (fit_hdr
)) {
814 puts ("** Bad FIT image format\n");
817 fit_print_contents (fit_hdr
);
821 /* Loading ok, update default load address */
824 return bootm_maybe_autostart(cmdtp
, argv
[0]);
828 fdcboot
, 3, 1, do_fdcboot
,
829 "boot from floppy device",