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Moved disk functions to drivers/bus/bios_disks.c

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This commit is contained in:
Michael Brown 2005-04-18 15:35:39 +00:00
parent 641596e6ba
commit c245ab75ad
2 changed files with 0 additions and 59 deletions
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56
src/arch/i386/firmware/pcbios/bios.c
View File

@ -64,59 +64,3 @@ void cpu_nap ( void ) {
IN_CONSTRAINTS (),
CLOBBER ( "eax" ) ); /* can't have an empty clobber list */
}
#if (TRY_FLOPPY_FIRST > 0)
/**************************************************************************
DISK_INIT - Initialize the disk system
**************************************************************************/
void disk_init ( void ) {
REAL_EXEC ( rm_disk_init,
"sti\n\t"
"xorw %ax,%ax\n\t"
"movb $0x80,%dl\n\t"
"int $0x13\n\t"
"cli\n\t",
0,
OUT_CONSTRAINTS (),
IN_CONSTRAINTS (),
CLOBBER ( "eax", "ebx", "ecx", "edx",
"ebp", "esi", "edi" ) );
}
/**************************************************************************
DISK_READ - Read a sector from disk
**************************************************************************/
unsigned int pcbios_disk_read ( int drive, int cylinder, int head, int sector,
char *fixme_buf ) {
uint16_t ax, flags, discard_c, discard_d;
segoff_t buf = SEGOFF ( fixme_buf );
/* FIXME: buf should be passed in as a segoff_t rather than a
* char *
*/
REAL_EXEC ( rm_pcbios_disk_read,
"sti\n\t"
"pushl %%ebx\n\t" /* Convert %ebx to %es:bx */
"popl %%bx\n\t"
"popl %%es\n\t"
"movb $0x02, %%ah\n\t" /* INT 13,2 - Read disk sector */
"movb $0x01, %%al\n\t" /* Read one sector */
"int $0x13\n\t"
"pushfw\n\t"
"popw %%bx\n\t"
"cli\n\t",
4,
OUT_CONSTRAINTS ( "=a" ( ax ), "=b" ( flags ),
"=c" ( discard_c ), "=d" ( discard_d ) ),
IN_CONSTRAINTS ( "c" ( ( ( cylinder & 0xff ) << 8 ) |
( ( cylinder >> 8 ) & 0x3 ) |
sector ),
"d" ( ( head << 8 ) | drive ),
"b" ( buf ) ),
CLOBBER ( "ebp", "esi", "edi" ) );
);
return ( flags & CF ) ? ax : 0;
}
#endif /* TRY_FLOPPY_FIRST */

3
src/arch/i386/include/bios.h
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@ -3,8 +3,5 @@
extern unsigned long currticks ( void );
extern void cpu_nap ( void );
extern void disk_init ( void );
extern unsigned int pcbios_disk_read ( int drive, int cylinder, int head,
int sector, char *fixme_buf );
#endif /* BIOS_H */