1 // SPDX-License-Identifier: GPL-2.0+
4 * Denis Peter, MPL AG, d.peter@mpl.ch.
19 #define PRINTF(fmt,args...) printf (fmt ,##args)
21 #define PRINTF(fmt,args...)
24 /*#if defined(CONFIG_CMD_DATE) */
29 int flags
; /* connected drives ect */
30 unsigned long blnr
; /* Logical block nr */
31 uchar drive
; /* drive no */
32 uchar cmdlen
; /* cmd length */
33 uchar cmd
[16]; /* cmd desc */
34 uchar dma
; /* if > 0 dma enabled */
35 uchar result
[11]; /* status information */
36 uchar resultlen
; /* lenght of result */
39 /* flags: only the lower 8bit used:
40 * bit 0 if set drive 0 is present
41 * bit 1 if set drive 1 is present
42 * bit 2 if set drive 2 is present
43 * bit 3 if set drive 3 is present
44 * bit 4 if set disk in drive 0 is inserted
45 * bit 5 if set disk in drive 1 is inserted
46 * bit 6 if set disk in drive 2 is inserted
47 * bit 7 if set disk in drive 4 is inserted
70 #define STATUS_TRACK 3
73 #define STATUS_SECT_SIZE 6
76 /* Register addresses */
77 #define FDC_BASE 0x3F0
78 #define FDC_SRA FDC_BASE + 0 /* Status Register A */
79 #define FDC_SRB FDC_BASE + 1 /* Status Register B */
80 #define FDC_DOR FDC_BASE + 2 /* Digital Output Register */
81 #define FDC_TDR FDC_BASE + 3 /* Tape Drive Register */
82 #define FDC_DSR FDC_BASE + 4 /* Data rate Register */
83 #define FDC_MSR FDC_BASE + 4 /* Main Status Register */
84 #define FDC_FIFO FDC_BASE + 5 /* FIFO */
85 #define FDC_DIR FDC_BASE + 6 /* Digital Input Register */
86 #define FDC_CCR FDC_BASE + 7 /* Configuration Control */
88 #define FDC_CMD_SENSE_INT 0x08
89 #define FDC_CMD_CONFIGURE 0x13
90 #define FDC_CMD_SPECIFY 0x03
91 #define FDC_CMD_RECALIBRATE 0x07
92 #define FDC_CMD_READ 0x06
93 #define FDC_CMD_READ_TRACK 0x02
94 #define FDC_CMD_READ_ID 0x0A
95 #define FDC_CMD_DUMP_REG 0x0E
96 #define FDC_CMD_SEEK 0x0F
98 #define FDC_CMD_SENSE_INT_LEN 0x01
99 #define FDC_CMD_CONFIGURE_LEN 0x04
100 #define FDC_CMD_SPECIFY_LEN 0x03
101 #define FDC_CMD_RECALIBRATE_LEN 0x02
102 #define FDC_CMD_READ_LEN 0x09
103 #define FDC_CMD_READ_TRACK_LEN 0x09
104 #define FDC_CMD_READ_ID_LEN 0x02
105 #define FDC_CMD_DUMP_REG_LEN 0x01
106 #define FDC_CMD_SEEK_LEN 0x03
108 #define FDC_FIFO_THR 0x0C
109 #define FDC_FIFO_DIS 0x00
110 #define FDC_IMPLIED_SEEK 0x01
111 #define FDC_POLL_DIS 0x00
112 #define FDC_PRE_TRK 0x00
113 #define FDC_CONFIGURE FDC_FIFO_THR | (FDC_POLL_DIS<<4) | (FDC_FIFO_DIS<<5) | (FDC_IMPLIED_SEEK << 6)
114 #define FDC_MFM_MODE 0x01 /* MFM enable */
115 #define FDC_SKIP_MODE 0x00 /* skip enable */
117 #define FDC_TIME_OUT 100000 /* time out */
118 #define FDC_RW_RETRIES 3 /* read write retries */
119 #define FDC_CAL_RETRIES 3 /* calibration and seek retries */
124 unsigned int size
; /* nr of sectors total */
125 unsigned int sect
; /* sectors per track */
126 unsigned int head
; /* nr of heads */
127 unsigned int track
; /* nr of tracks */
128 unsigned int stretch
; /* !=0 means double track steps */
129 unsigned char gap
; /* gap1 size */
130 unsigned char rate
; /* data rate. |= 0x40 for perpendicular */
131 unsigned char spec1
; /* stepping rate, head unload time */
132 unsigned char fmt_gap
;/* gap2 size */
133 unsigned char hlt
; /* head load time */
134 unsigned char sect_code
;/* Sector Size code */
135 const char * name
; /* used only for predefined formats */
139 /* supported Floppy types (currently only one) */
140 const static FD_GEO_STRUCT floppy_type
[2] = {
141 { 2880,18,2,80,0,0x1B,0x00,0xCF,0x6C,16,2,"H1440" }, /* 7 1.44MB 3.5" */
142 { 0, 0,0, 0,0,0x00,0x00,0x00,0x00, 0,0,NULL
}, /* end of table */
145 static FDC_COMMAND_STRUCT cmd
; /* global command struct */
147 /* If the boot drive number is undefined, we assume it's drive 0 */
148 #ifndef CONFIG_SYS_FDC_DRIVE_NUMBER
149 #define CONFIG_SYS_FDC_DRIVE_NUMBER 0
152 /* Hardware access */
153 #ifndef CONFIG_SYS_ISA_IO_STRIDE
154 #define CONFIG_SYS_ISA_IO_STRIDE 1
157 #ifndef CONFIG_SYS_ISA_IO_OFFSET
158 #define CONFIG_SYS_ISA_IO_OFFSET 0
161 /* Supporting Functions */
162 /* reads a Register of the FDC */
163 unsigned char read_fdc_reg(unsigned int addr
)
165 volatile unsigned char *val
=
166 (volatile unsigned char *)(CONFIG_SYS_ISA_IO_BASE_ADDRESS
+
167 (addr
* CONFIG_SYS_ISA_IO_STRIDE
) +
168 CONFIG_SYS_ISA_IO_OFFSET
);
173 /* writes a Register of the FDC */
174 void write_fdc_reg(unsigned int addr
, unsigned char val
)
176 volatile unsigned char *tmp
=
177 (volatile unsigned char *)(CONFIG_SYS_ISA_IO_BASE_ADDRESS
+
178 (addr
* CONFIG_SYS_ISA_IO_STRIDE
) +
179 CONFIG_SYS_ISA_IO_OFFSET
);
183 /* waits for an interrupt (polling) */
184 int wait_for_fdc_int(void)
186 unsigned long timeout
;
187 timeout
= FDC_TIME_OUT
;
188 while((read_fdc_reg(FDC_SRA
)&0x80)==0) {
191 if(timeout
==0) /* timeout occurred */
197 /* reads a byte from the FIFO of the FDC and checks direction and RQM bit
198 of the MSR. returns -1 if timeout, or byte if ok */
199 int read_fdc_byte(void)
201 unsigned long timeout
;
202 timeout
= FDC_TIME_OUT
;
203 while((read_fdc_reg(FDC_MSR
)&0xC0)!=0xC0) {
204 /* direction out and ready */
207 if(timeout
==0) /* timeout occurred */
210 return read_fdc_reg(FDC_FIFO
);
213 /* if the direction of the FIFO is wrong, this routine is used to
214 empty the FIFO. Should _not_ be used */
215 int fdc_need_more_output(void)
218 while((read_fdc_reg(FDC_MSR
)&0xC0)==0xC0) {
219 c
=(unsigned char)read_fdc_byte();
220 printf("Error: more output: %x\n",c
);
226 /* writes a byte to the FIFO of the FDC and checks direction and RQM bit
228 int write_fdc_byte(unsigned char val
)
230 unsigned long timeout
;
231 timeout
= FDC_TIME_OUT
;
232 while((read_fdc_reg(FDC_MSR
)&0xC0)!=0x80) {
233 /* direction in and ready for byte */
236 fdc_need_more_output();
237 if(timeout
==0) /* timeout occurred */
240 write_fdc_reg(FDC_FIFO
,val
);
244 /* sets up all FDC commands and issues it to the FDC. If
245 the command causes direct results (no Execution Phase)
246 the result is be read as well. */
248 int fdc_issue_cmd(FDC_COMMAND_STRUCT
*pCMD
,FD_GEO_STRUCT
*pFG
)
251 unsigned long head
,track
,sect
,timeout
;
252 track
= pCMD
->blnr
/ (pFG
->sect
* pFG
->head
); /* track nr */
253 sect
= pCMD
->blnr
% (pFG
->sect
* pFG
->head
); /* remaining blocks */
254 head
= sect
/ pFG
->sect
; /* head nr */
255 sect
= sect
% pFG
->sect
; /* remaining blocks */
256 sect
++; /* sectors are 1 based */
257 PRINTF("Cmd 0x%02x Track %ld, Head %ld, Sector %ld, Drive %d (blnr %ld)\n",
258 pCMD
->cmd
[0],track
,head
,sect
,pCMD
->drive
,pCMD
->blnr
);
260 if(head
|=0) { /* max heads = 2 */
261 pCMD
->cmd
[DRIVE
]=pCMD
->drive
| 0x04; /* head 1 */
262 pCMD
->cmd
[HEAD
]=(unsigned char) head
; /* head register */
265 pCMD
->cmd
[DRIVE
]=pCMD
->drive
; /* head 0 */
266 pCMD
->cmd
[HEAD
]=(unsigned char) head
; /* head register */
268 pCMD
->cmd
[TRACK
]=(unsigned char) track
; /* track */
269 switch (pCMD
->cmd
[COMMAND
]) {
271 pCMD
->cmd
[SECTOR
]=(unsigned char) sect
; /* sector */
272 pCMD
->cmd
[SECTOR_SIZE
]=pFG
->sect_code
; /* sector size code */
273 pCMD
->cmd
[LAST_TRACK
]=pFG
->sect
; /* End of track */
274 pCMD
->cmd
[GAP
]=pFG
->gap
; /* gap */
275 pCMD
->cmd
[DTL
]=0xFF; /* DTL */
276 pCMD
->cmdlen
=FDC_CMD_READ_LEN
;
277 pCMD
->cmd
[COMMAND
]|=(FDC_MFM_MODE
<<6); /* set MFM bit */
278 pCMD
->cmd
[COMMAND
]|=(FDC_SKIP_MODE
<<5); /* set Skip bit */
279 pCMD
->resultlen
=0; /* result only after execution */
282 pCMD
->cmdlen
=FDC_CMD_SEEK_LEN
;
283 pCMD
->resultlen
=0; /* no result */
285 case FDC_CMD_CONFIGURE
:
286 pCMD
->cmd
[CONFIG0
]=0;
287 pCMD
->cmd
[CONFIG1
]=FDC_CONFIGURE
; /* FIFO Threshold, Poll, Enable FIFO */
288 pCMD
->cmd
[CONFIG2
]=FDC_PRE_TRK
; /* Precompensation Track */
289 pCMD
->cmdlen
=FDC_CMD_CONFIGURE_LEN
;
290 pCMD
->resultlen
=0; /* no result */
292 case FDC_CMD_SPECIFY
:
293 pCMD
->cmd
[SPEC_HUTSRT
]=pFG
->spec1
;
294 pCMD
->cmd
[SPEC_HLT
]=(pFG
->hlt
)<<1; /* head load time */
296 pCMD
->cmd
[SPEC_HLT
]|=0x1; /* no dma */
297 pCMD
->cmdlen
=FDC_CMD_SPECIFY_LEN
;
298 pCMD
->resultlen
=0; /* no result */
300 case FDC_CMD_DUMP_REG
:
301 pCMD
->cmdlen
=FDC_CMD_DUMP_REG_LEN
;
302 pCMD
->resultlen
=10; /* 10 byte result */
304 case FDC_CMD_READ_ID
:
305 pCMD
->cmd
[COMMAND
]|=(FDC_MFM_MODE
<<6); /* set MFM bit */
306 pCMD
->cmdlen
=FDC_CMD_READ_ID_LEN
;
307 pCMD
->resultlen
=7; /* 7 byte result */
309 case FDC_CMD_RECALIBRATE
:
310 pCMD
->cmd
[DRIVE
]&=0x03; /* don't set the head bit */
311 pCMD
->cmdlen
=FDC_CMD_RECALIBRATE_LEN
;
312 pCMD
->resultlen
=0; /* no result */
315 case FDC_CMD_SENSE_INT
:
316 pCMD
->cmdlen
=FDC_CMD_SENSE_INT_LEN
;
320 for(i
=0;i
<pCMD
->cmdlen
;i
++) {
321 /* PRINTF("write cmd%d = 0x%02X\n",i,pCMD->cmd[i]); */
322 if (write_fdc_byte(pCMD
->cmd
[i
]) == false) {
323 PRINTF("Error: timeout while issue cmd%d\n",i
);
327 timeout
=FDC_TIME_OUT
;
328 for(i
=0;i
<pCMD
->resultlen
;i
++) {
329 while((read_fdc_reg(FDC_MSR
)&0xC0)!=0xC0) {
332 PRINTF(" timeout while reading result%d MSR=0x%02X\n",i
,read_fdc_reg(FDC_MSR
));
336 pCMD
->result
[i
]=(unsigned char)read_fdc_byte();
341 /* selects the drive assigned in the cmd structur and
342 switches on the Motor */
343 void select_fdc_drive(FDC_COMMAND_STRUCT
*pCMD
)
347 val
=(1<<(4+pCMD
->drive
))|pCMD
->drive
|0xC; /* set reset, dma gate and motor bits */
348 if((read_fdc_reg(FDC_DOR
)&val
)!=val
) {
349 write_fdc_reg(FDC_DOR
,val
);
350 for(val
=0;val
<255;val
++)
351 udelay(500); /* wait some time to start motor */
355 /* switches off the Motor of the specified drive */
356 void stop_fdc_drive(FDC_COMMAND_STRUCT
*pCMD
)
360 val
=(1<<(4+pCMD
->drive
))|pCMD
->drive
; /* sets motor bits */
361 write_fdc_reg(FDC_DOR
,(read_fdc_reg(FDC_DOR
)&~val
));
364 /* issues a recalibrate command, waits for interrupt and
365 * issues a sense_interrupt */
366 int fdc_recalibrate(FDC_COMMAND_STRUCT
*pCMD
,FD_GEO_STRUCT
*pFG
)
368 pCMD
->cmd
[COMMAND
]=FDC_CMD_RECALIBRATE
;
369 if (fdc_issue_cmd(pCMD
, pFG
) == false)
371 while (wait_for_fdc_int() != true);
373 pCMD
->cmd
[COMMAND
]=FDC_CMD_SENSE_INT
;
374 return(fdc_issue_cmd(pCMD
,pFG
));
377 /* issues a recalibrate command, waits for interrupt and
378 * issues a sense_interrupt */
379 int fdc_seek(FDC_COMMAND_STRUCT
*pCMD
,FD_GEO_STRUCT
*pFG
)
381 pCMD
->cmd
[COMMAND
]=FDC_CMD_SEEK
;
382 if (fdc_issue_cmd(pCMD
, pFG
) == false)
384 while (wait_for_fdc_int() != true);
386 pCMD
->cmd
[COMMAND
]=FDC_CMD_SENSE_INT
;
387 return(fdc_issue_cmd(pCMD
,pFG
));
390 /* terminates current command, by not servicing the FIFO
391 * waits for interrupt and fills in the result bytes */
392 int fdc_terminate(FDC_COMMAND_STRUCT
*pCMD
)
396 udelay(500); /* wait 500usec for fifo overrun */
397 while((read_fdc_reg(FDC_SRA
)&0x80)==0x00); /* wait as long as no int has occurred */
399 pCMD
->result
[i
]=(unsigned char)read_fdc_byte();
404 /* reads data from FDC, seek commands are issued automatic */
405 int fdc_read_data(unsigned char *buffer
, unsigned long blocks
,FDC_COMMAND_STRUCT
*pCMD
, FD_GEO_STRUCT
*pFG
)
407 /* first seek to start address */
408 unsigned long len
,readblk
,i
,timeout
,ii
,offset
;
409 unsigned char c
,retriesrw
,retriescal
;
410 unsigned char *bufferw
; /* working buffer */
414 flags
=disable_interrupts(); /* switch off all Interrupts */
415 select_fdc_drive(pCMD
); /* switch on drive */
416 sect_size
=0x080<<pFG
->sect_code
;
420 if (fdc_seek(pCMD
, pFG
) == false) {
421 stop_fdc_drive(pCMD
);
426 if((pCMD
->result
[STATUS_0
]&0x20)!=0x20) {
427 printf("Seek error Status: %02X\n",pCMD
->result
[STATUS_0
]);
428 stop_fdc_drive(pCMD
);
433 /* now determine the next seek point */
434 /* lastblk=pCMD->blnr + blocks; */
435 /* readblk=(pFG->head*pFG->sect)-(pCMD->blnr%(pFG->head*pFG->sect)); */
436 readblk
=pFG
->sect
-(pCMD
->blnr
%pFG
->sect
);
437 PRINTF("1st nr of block possible read %ld start %ld\n",readblk
,pCMD
->blnr
);
438 if(readblk
>blocks
) /* is end within 1st track */
439 readblk
=blocks
; /* yes, correct it */
440 PRINTF("we read %ld blocks start %ld\n",readblk
,pCMD
->blnr
);
441 bufferw
= &buffer
[0]; /* setup working buffer */
444 len
=sect_size
* readblk
;
445 pCMD
->cmd
[COMMAND
]=FDC_CMD_READ
;
446 if (fdc_issue_cmd(pCMD
, pFG
) == false) {
447 stop_fdc_drive(pCMD
);
452 for (i
=0;i
<len
;i
++) {
453 timeout
=FDC_TIME_OUT
;
455 c
=read_fdc_reg(FDC_MSR
);
457 bufferw
[i
]=read_fdc_reg(FDC_FIFO
);
460 if((c
&0xC0)==0x80) { /* output */
461 PRINTF("Transfer error transferred: at %ld, MSR=%02X\n",i
,c
);
463 for(ii
=0;ii
<7;ii
++) {
464 pCMD
->result
[ii
]=bufferw
[(i
-7+ii
)];
467 if(retriesrw
++>FDC_RW_RETRIES
) {
468 if (retriescal
++>FDC_CAL_RETRIES
) {
469 stop_fdc_drive(pCMD
);
475 PRINTF(" trying to recalibrate Try %d\n",retriescal
);
476 if (fdc_recalibrate(pCMD
, pFG
) == false) {
477 stop_fdc_drive(pCMD
);
484 } /* else >FDC_CAL_RETRIES */
487 PRINTF("Read retry %d\n",retriesrw
);
489 } /* else >FDC_RW_RETRIES */
494 /* the last sector of a track or all data has been read,
495 * we need to get the results */
497 offset
+=(sect_size
*readblk
); /* set up buffer pointer */
498 bufferw
= &buffer
[offset
];
499 pCMD
->blnr
+=readblk
; /* update current block nr */
500 blocks
-=readblk
; /* update blocks */
502 break; /* we are finish */
503 /* setup new read blocks */
504 /* readblk=pFG->head*pFG->sect; */
509 /* a seek is necessary */
510 if (fdc_seek(pCMD
, pFG
) == false) {
511 stop_fdc_drive(pCMD
);
516 if((pCMD
->result
[STATUS_0
]&0x20)!=0x20) {
517 PRINTF("Seek error Status: %02X\n",pCMD
->result
[STATUS_0
]);
518 stop_fdc_drive(pCMD
);
521 } while (true); /* start over */
522 stop_fdc_drive(pCMD
); /* switch off drive */
528 /* Scan all drives and check if drive is present and disk is inserted */
529 int fdc_check_drive(FDC_COMMAND_STRUCT
*pCMD
, FD_GEO_STRUCT
*pFG
)
532 /* OK procedure of data book is satisfied.
533 * trying to get some information over the drives */
534 state
=0; /* no drives, no disks */
535 for(drives
=0;drives
<4;drives
++) {
537 select_fdc_drive(pCMD
);
538 pCMD
->blnr
=0; /* set to the 1st block */
539 if (fdc_recalibrate(pCMD
, pFG
) == false)
541 if((pCMD
->result
[STATUS_0
]&0x10)==0x10)
543 /* ok drive connected check for disk */
545 pCMD
->blnr
=pFG
->size
; /* set to the last block */
546 if (fdc_seek(pCMD
, pFG
) == false)
548 pCMD
->blnr
=0; /* set to the 1st block */
549 if (fdc_recalibrate(pCMD
, pFG
) == false)
551 pCMD
->cmd
[COMMAND
]=FDC_CMD_READ_ID
;
552 if (fdc_issue_cmd(pCMD
, pFG
) == false)
554 state
|=(0x10<<drives
);
556 stop_fdc_drive(pCMD
);
558 PRINTF("Floppy Drive %d %sconnected %sDisk inserted %s\n",i
,
559 ((state
&(1<<i
))==(1<<i
)) ? "":"not ",
560 ((state
&(0x10<<i
))==(0x10<<i
)) ? "":"no ",
561 ((state
&(0x10<<i
))==(0x10<<i
)) ? pFG
->name
: "");
568 /**************************************************************************
570 * setup the fdc according the datasheet
571 * assuming in PS2 Mode
573 int fdc_setup(int drive
, FDC_COMMAND_STRUCT
*pCMD
, FD_GEO_STRUCT
*pFG
)
577 #ifdef CONFIG_SYS_FDC_HW_INIT
580 /* first, we reset the FDC via the DOR */
581 write_fdc_reg(FDC_DOR
,0x00);
582 for(i
=0; i
<255; i
++) /* then we wait some time */
584 /* then, we clear the reset in the DOR */
586 select_fdc_drive(pCMD
);
587 /* initialize the CCR */
588 write_fdc_reg(FDC_CCR
,pFG
->rate
);
589 /* then initialize the DSR */
590 write_fdc_reg(FDC_DSR
,pFG
->rate
);
591 if (wait_for_fdc_int() == false) {
592 PRINTF("Time Out after writing CCR\n");
595 /* now issue sense Interrupt and status command
596 * assuming only one drive present (drive 0) */
597 pCMD
->dma
=0; /* we don't use any dma at all */
599 /* issue sense interrupt for all 4 possible drives */
600 pCMD
->cmd
[COMMAND
]=FDC_CMD_SENSE_INT
;
601 if (fdc_issue_cmd(pCMD
, pFG
) == false) {
602 PRINTF("Sense Interrupt for drive %d failed\n",i
);
605 /* issue the configure command */
607 select_fdc_drive(pCMD
);
608 pCMD
->cmd
[COMMAND
]=FDC_CMD_CONFIGURE
;
609 if (fdc_issue_cmd(pCMD
, pFG
) == false) {
610 PRINTF(" configure timeout\n");
611 stop_fdc_drive(pCMD
);
614 /* issue specify command */
615 pCMD
->cmd
[COMMAND
]=FDC_CMD_SPECIFY
;
616 if (fdc_issue_cmd(pCMD
, pFG
) == false) {
617 PRINTF(" specify timeout\n");
618 stop_fdc_drive(pCMD
);
622 /* then, we clear the reset in the DOR */
623 /* fdc_check_drive(pCMD,pFG); */
624 /* write_fdc_reg(FDC_DOR,0x04); */
629 /****************************************************************************
630 * main routine do_fdcboot
632 int do_fdcboot (cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
634 FD_GEO_STRUCT
*pFG
= (FD_GEO_STRUCT
*)floppy_type
;
635 FDC_COMMAND_STRUCT
*pCMD
= &cmd
;
636 unsigned long addr
,imsize
;
637 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
638 image_header_t
*hdr
; /* used for fdc boot */
640 unsigned char boot_drive
;
642 #if defined(CONFIG_FIT)
643 const void *fit_hdr
= NULL
;
648 addr
= CONFIG_SYS_LOAD_ADDR
;
649 boot_drive
=CONFIG_SYS_FDC_DRIVE_NUMBER
;
652 addr
= simple_strtoul(argv
[1], NULL
, 16);
653 boot_drive
=CONFIG_SYS_FDC_DRIVE_NUMBER
;
656 addr
= simple_strtoul(argv
[1], NULL
, 16);
657 boot_drive
=simple_strtoul(argv
[2], NULL
, 10);
660 return CMD_RET_USAGE
;
662 /* setup FDC and scan for drives */
663 if (fdc_setup(boot_drive
, pCMD
, pFG
) == false) {
664 printf("\n** Error in setup FDC **\n");
667 if (fdc_check_drive(pCMD
, pFG
) == false) {
668 printf("\n** Error in check_drives **\n");
671 if((pCMD
->flags
&(1<<boot_drive
))==0) {
672 /* drive not available */
673 printf("\n** Drive %d not availabe **\n",boot_drive
);
676 if((pCMD
->flags
&(0x10<<boot_drive
))==0) {
677 /* no disk inserted */
678 printf("\n** No disk inserted in drive %d **\n",boot_drive
);
681 /* ok, we have a valid source */
682 pCMD
->drive
=boot_drive
;
683 /* read first block */
685 if (fdc_read_data((unsigned char *)addr
, 1, pCMD
, pFG
) == false) {
686 printf("\nRead error:");
688 printf("result%d: 0x%02X\n",i
,pCMD
->result
[i
]);
692 switch (genimg_get_format ((void *)addr
)) {
693 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
694 case IMAGE_FORMAT_LEGACY
:
695 hdr
= (image_header_t
*)addr
;
696 image_print_contents (hdr
);
698 imsize
= image_get_image_size (hdr
);
701 #if defined(CONFIG_FIT)
702 case IMAGE_FORMAT_FIT
:
703 fit_hdr
= (const void *)addr
;
704 puts ("Fit image detected...\n");
706 imsize
= fit_get_size (fit_hdr
);
710 puts ("** Unknown image type\n");
717 printf("Loading %ld Bytes (%d blocks) at 0x%08lx..\n",imsize
,nrofblk
,addr
);
719 if (fdc_read_data((unsigned char *)addr
, nrofblk
, pCMD
, pFG
) == false) {
720 /* read image block */
721 printf("\nRead error:");
723 printf("result%d: 0x%02X\n",i
,pCMD
->result
[i
]);
726 printf("OK %ld Bytes loaded.\n",imsize
);
728 flush_cache (addr
, imsize
);
730 #if defined(CONFIG_FIT)
731 /* This cannot be done earlier, we need complete FIT image in RAM first */
732 if (genimg_get_format ((void *)addr
) == IMAGE_FORMAT_FIT
) {
733 if (!fit_check_format (fit_hdr
)) {
734 puts ("** Bad FIT image format\n");
737 fit_print_contents (fit_hdr
);
741 /* Loading ok, update default load address */
744 return bootm_maybe_autostart(cmdtp
, argv
[0]);
748 fdcboot
, 3, 1, do_fdcboot
,
749 "boot from floppy device",