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/*
* VME Linux/m68k Loader
*
* (c) Copyright 1997 by Nick Holgate
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file COPYING for more details.
*/
/*--------------------------------------------------------------------------*/
#define BVMBugEntry (0xE8000404)
#define BB_PUTCHAR 0
#define BB_PUTSTR 1
#define BB_PRINT 2
#define BB_FORMAT 3
#define BB_GETCHAR 4
#define BB_GETCHAR_NW 5
#define BB_GETSTR 6
#define BB_ATOI 7
#define BB_MALLOC 8
#define BB_FREE 9
#define BB_MEMCMP 10
#define BB_MEMSET 11
#define BB_MEMMOVE 12
#define BB_DISK_OPEN 13
#define BB_DISK_READ 14
#define BB_DISK_CLOSE 15
#define BB_FILE_OPEN 16
#define BB_FILE_READ 17
#define BB_FILE_CLOSE 18
#define BB_GETTIME 19
#define BB_DEFINE_SYM 20
#define BB_DELETE_SYM 21
#define BB_ENTER 22
#define BB_TFTP_READ 23
#define BB_NETBOOTINFO 24
#define BB_BOOTARGS 25
#define BB_BRD_ID 26
/*--------------------------------------------------------------------------*/
/* BVMBug error codes
*/
#define DISK_READ_ERROR 1 /* Disk Read Error */
#define OUT_OF_MEMORY 2 /* Out of memory */
#define INVALID_FILE_MAP 3 /* File map array contains invalid data */
#define ILLEGAL_SYMBOL_NAME 4 /* Illegal symbol name */
#define FILE_NOT_FOUND 5 /* Illegal or missing file */
#define NET_READ_ERROR 6 /* Network Read Error */
#define USER_ABORTED 7 /* Aborted by user */
/*--------------------------------------------------------------------------*/
typedef struct {
char boot_id[8]; /* id string "BVM LTD" */
#define BOOT_BLOCK_ID "BVM LTD"
unsigned long boot_start_block; /* linear bootfile start block addr */
/* if zero boot_data[] holds user */
/* code or file map of non-linear */
/* bootfile */
unsigned long boot_block_count; /* number of blocks in linear and */
/* non-linear bootfiles */
/* zero indicates boot_data[] holds */
/* machine instructions which are */
/* moved to the load address and */
/* executed */
unsigned long boot_load_address; /* address to load bootfile or user */
/* code, if -1 the data is stored */
/* in memory allocated from BVMBug's*/
/* local memory pool */
#define BOOT_ALLOC_MEM (0xffffffff)
unsigned long boot_run_offset; /* offset from load address to */
/* begin execution */
/* if -1 take SP and PC from start */
/* of loaded data */
#define BOOT_RUN_VECTORED (0xffffffff)
char boot_message[32]; /* message to display */
#define BOOT_DATA_SZ (390)
unsigned char boot_data[BOOT_DATA_SZ];
/* boot data area: */
/* may contain a file map describing*/
/* the location of the bootfile or */
/* it may contain user startup code */
} BOOTBLOCK;
/*--------------------------------------------------------------------------*/
typedef struct netbootinfo {
unsigned long cipa; /* client IP address */
unsigned long sipa; /* server IP address */
unsigned long gipa; /* gateway IP address */
unsigned long subnetmask; /* subnet IP address mask */
unsigned long reserved; /* reserved for broadcast IP */
char bootfile[128]; /* bootfile name */
} NETBOOTINFO;
/*--------------------------------------------------------------------------*/
/* Call BVMBug putchar subroutine.
*/
static
__inline__
void
BVMBug_putchar
( int c
)
{ register unsigned long d0 asm("d0") = (unsigned long) BB_PUTCHAR;
register unsigned long d1 asm("d1") = (unsigned long) c;
asm volatile ( "trap #15"
: /* no outputs */
: "r" (d0), "r" (d1)
: "d0", "d1"
);
}
/*--------------------------------------------------------------------------*/
/* Call BVMBug putstr subroutine.
*/
static
__inline__
void
BVMBug_putstr
( const char *str
)
{ register unsigned long d0 asm("d0") = (unsigned long) BB_PUTSTR;
register void *a0 asm("a0") = (void *) str;
asm volatile ( "trap #15"
: /* no outputs */
: "r" (d0), "r" (a0)
: "d0", "a0"
);
}
/*--------------------------------------------------------------------------*/
/* Call BVMBug print subroutine.
*/
static
__inline__
int
BVMBug_print
( const char *str,
void *vap
)
{ register unsigned long d0 asm("d0") = (unsigned long) BB_PRINT;
register void *a0 asm("a0") = (void *) str;
register void *a1 asm("a1") = (void *) vap;
asm volatile ( "trap #15"
: "=r" (d0)
: "r" (d0), "r" (a0), "r" (a1)
: "d0", "a0", "a1"
);
return d0;
}
/*--------------------------------------------------------------------------*/
/* Call BVMBug format subroutine.
*/
static
__inline__
int
BVMBug_format
( char *buf,
const char *str,
void *vap
)
{ register unsigned long d0 asm("d0") = (unsigned long) BB_FORMAT;
register void *a0 asm("a0") = (void *) str;
register void *a1 asm("a1") = (void *) vap;
register void *a2 asm("a2") = (void *) buf;
asm volatile ( "trap #15"
: "=r" (d0)
: "r" (d0), "r" (a0), "r" (a1), "r" (a2)
: "d0", "a0", "a1", "a2", "memory"
);
return d0;
}
/*--------------------------------------------------------------------------*/
/* Call BVMBug getchar subroutine.
*/
static
__inline__
int
BVMBug_getchar
( void
)
{ register unsigned long d0 asm("d0") = (unsigned long) BB_GETCHAR;
asm volatile ( "trap #15"
: "=r" (d0)
: "r" (d0)
: "d0"
);
return d0;
}
/*--------------------------------------------------------------------------*/
/* Call BVMBug getchar_nowait subroutine.
*/
static
__inline__
int
BVMBug_getchar_nowait
( void
)
{ register unsigned long d0 asm("d0") = (unsigned long) BB_GETCHAR_NW;
asm volatile ( "trap #15"
: "=r" (d0)
: "r" (d0)
: "d0"
);
return d0;
}
/*--------------------------------------------------------------------------*/
/* Call BVMBug getstr subroutine.
*/
static
__inline__
int
BVMBug_getstr
( void *buffer,
int maxlen
)
{ register unsigned long d0 asm("d0") = (unsigned long) BB_GETSTR;
register unsigned long d1 asm("d1") = (unsigned long) maxlen;
register void* a0 asm("a0") = (void *) buffer;
asm volatile ( "trap #15"
: "=r" (d0)
: "r" (d0), "r" (d1), "r" (a0)
: "d0", "d1", "a0"
);
return d0;
}
/*--------------------------------------------------------------------------*/
/* Call BVMBug atoi subroutine.
*/
static
__inline__
int
BVMBug_atoi
( char *string,
int base,
unsigned long *result
)
{ register unsigned long d0 asm("d0") = (unsigned long) BB_ATOI;
register unsigned long d1 asm("d1");
register unsigned long d2 asm("d2") = (unsigned long) base;
register void * a0 asm("a0") = (void *) string;
asm volatile ( "trap #15"
: "=r" (d0), "=r" (d1)
: "r" (d0), "r" (d2), "r" (a0)
: "d0", "d1", "d2", "a0"
);
*result = d1;
return d0;
}
/*--------------------------------------------------------------------------*/
/* Call BVMBug malloc subroutine.
*/
static
__inline__
void *
BVMBug_malloc
( unsigned long count
)
{ register unsigned long d0 asm("d0") = (unsigned long) BB_MALLOC;
register unsigned long d1 asm("d1") = (unsigned long) count;
register void * a0 asm("a0");
asm volatile ( "trap #15"
: "=r" (a0)
: "r" (d0), "r" (d1)
: "d0", "d1", "a0"
);
return a0;
}
/*--------------------------------------------------------------------------*/
/* Call BVMBug free subroutine.
*/
static
__inline__
void
BVMBug_free
( void *memptr
)
{ register unsigned long d0 asm("d0") = (unsigned long) BB_FREE;
register void * a0 asm("a0") = (void *) memptr;
asm volatile ( "trap #15"
: /* no outputs */
: "r" (d0), "r" (a0)
: "d0", "a0"
);
}
/*--------------------------------------------------------------------------*/
/* Call BVMBug memcmp subroutine.
*/
static
__inline__
int
BVMBug_memcmp
( void *ptr1,
void *ptr2,
unsigned long siz
)
{ register unsigned long d0 asm("d0") = (unsigned long) BB_MEMCMP;
register unsigned long d1 asm("d1") = (unsigned long) siz;
register void * a0 asm("a0") = (void *) ptr1;
register void * a1 asm("a1") = (void *) ptr2;
asm volatile ( "trap #15"
: "=r" (d0)
: "r" (d0), "r" (d1), "r" (a0), "r" (a1)
: "d0", "d1", "a0", "a1", "memory"
);
return d0;
}
/*--------------------------------------------------------------------------*/
/* Call BVMBug memset subroutine.
*/
static
__inline__
void
BVMBug_memset
( void *dst,
int val,
unsigned long siz
)
{ register unsigned long d0 asm("d0") = (unsigned long) BB_MEMSET;
register unsigned long d1 asm("d1") = (unsigned long) val;
register unsigned long d2 asm("d2") = (unsigned long) siz;
register void * a0 asm("a0") = (void *) dst;
asm volatile ( "trap #15"
: /* no outputs */
: "r" (d0), "r" (d1), "r" (d2), "r" (a0)
: "d0", "d1", "d2", "a0", "memory"
);
}
/*--------------------------------------------------------------------------*/
/* Call BVMBug memmove subroutine.
*/
static
__inline__
void
BVMBug_memmove
( void *dst,
const void *src,
unsigned long siz
)
{ register unsigned long d0 asm("d0") = (unsigned long) BB_MEMMOVE;
register unsigned long d1 asm("d1") = (unsigned long) siz;
register void * a0 asm("a0") = (void *) dst;
register void * a1 asm("a1") = (void *) src;
asm volatile ( "trap #15"
: /* no outputs */
: "r" (d0), "r" (d1), "r" (a0), "r" (a1)
: "d0", "d1", "a0", "a1", "memory"
);
}
/*--------------------------------------------------------------------------*/
/* Call BVMBug disk_open subroutine.
*/
static
__inline__
int
BVMBug_disk_open
( void
)
{ register unsigned long d0 asm("d0") = (unsigned long) BB_DISK_OPEN;
asm volatile ( "trap #15"
: "=r" (d0)
: "r" (d0)
: "d0"
);
return d0;
}
/*--------------------------------------------------------------------------*/
/* Call BVMBug disk_read subroutine.
*/
static
__inline__
int
BVMBug_disk_read
( void *buffer,
unsigned long block,
unsigned long count
)
{ register unsigned long d0 asm("d0") = (unsigned long) BB_DISK_READ;
register unsigned long d1 asm("d1") = (unsigned long) count;
register unsigned long d2 asm("d2") = (unsigned long) block;
register void * a0 asm("a0") = (void *) buffer;
asm volatile ( "trap #15"
: "=r" (d0)
: "r" (d0), "r" (d1), "r" (d2), "r" (a0)
: "d0", "d1", "d2", "a0", "memory"
);
return d0;
}
/*--------------------------------------------------------------------------*/
/* Call BVMBug disk_close subroutine.
*/
static
__inline__
void
BVMBug_disk_close
( void
)
{ register unsigned long d0 asm("d0") = (unsigned long) BB_DISK_CLOSE;
asm volatile ( "trap #15"
: /* no outputs */
: "r" (d0)
: "d0"
);
}
/*--------------------------------------------------------------------------*/
/* Call BVMBug file_open subroutine.
*/
static
__inline__
int
BVMBug_file_open
( unsigned long file_size,
unsigned long map_entries,
const void *map
)
{ register unsigned long d0 asm("d0") = (unsigned long) BB_FILE_OPEN;
register unsigned long d1 asm("d1") = (unsigned long) file_size;
register unsigned long d2 asm("d2") = (unsigned long) map_entries;
register void * a0 asm("a0") = (void *) map;
asm volatile ( "trap #15"
: "=r" (d0)
: "r" (d0), "r" (d1), "r" (d2), "r" (a0)
: "d0", "d1", "d2", "a0"
);
return d0;
}
/*--------------------------------------------------------------------------*/
/* Call BVMBug file_read subroutine.
*/
static
__inline__
int
BVMBug_file_read
( void *buffer,
unsigned long offset,
unsigned long count
)
{ register unsigned long d0 asm("d0") = (unsigned long) BB_FILE_READ;
register unsigned long d1 asm("d1") = (unsigned long) count;
register unsigned long d2 asm("d2") = (unsigned long) offset;
register void * a0 asm("a0") = (void *) buffer;
asm volatile ( "trap #15"
: "=r" (d0)
: "r" (d0), "r" (d1), "r" (d2), "r" (a0)
: "d0", "d1", "d2", "a0", "memory"
);
return d0;
}
/*--------------------------------------------------------------------------*/
/* Call BVMBug file_close subroutine.
*/
static
__inline__
void
BVMBug_file_close
( void
)
{ register unsigned long d0 asm("d0") = (unsigned long) BB_FILE_CLOSE;
asm volatile ( "trap #15"
: /* no outputs */
: "r" (d0)
: "d0"
);
}
/*--------------------------------------------------------------------------*/
/* Call BVMBug gettime subroutine.
*/
static
__inline__
void
BVMBug_gettime
( unsigned long *time,
unsigned long *date
)
{ register unsigned long d0 asm("d0") = (unsigned long) BB_GETTIME;
register unsigned long d1 asm("d1");
asm volatile ( "trap #15"
: "=r" (d0), "=r" (d1)
: "r" (d0)
: "d0", "d1"
);
if (time) *time = d0;
if (date) *date = d1;
}
/*--------------------------------------------------------------------------*/
/* Call BVMBug define symbol subroutine.
*/
static
__inline__
int
BVMBug_define_symbol
( const char *name,
unsigned long value,
unsigned long type /* 0 = code, 1 = data */
)
{ register unsigned long d0 asm("d0") = (unsigned long) BB_DEFINE_SYM;
register unsigned long d1 asm("d1") = (unsigned long) value;
register unsigned long d2 asm("d2") = (unsigned long) type;
register void * a0 asm("a0") = (void *) name;
asm volatile ( "trap #15"
: "=r" (d0)
: "r" (d0), "r" (d1), "r" (d2), "r" (a0)
: "d0", "d1", "d2", "a0"
);
return d0;
}
/*--------------------------------------------------------------------------*/
/* Call BVMBug delete symbol subroutine.
*/
static
__inline__
int
BVMBug_delete_symbol
( const char *name /* symbol name or NULL for all symbols */
)
{ register unsigned long d0 asm("d0") = (unsigned long) BB_DELETE_SYM;
register void * a0 asm("a0") = (void *) name;
asm volatile ( "trap #15"
: "=r" (d0)
: "r" (d0), "r" (a0)
: "d0", "a0"
);
return d0;
}
/*--------------------------------------------------------------------------*/
/* Call BVMBug.
*/
static
__inline__
void
BVMBug_enter
( void
)
{ register unsigned long d0 asm("d0") = (unsigned long) BB_ENTER;
asm volatile ( "trap #15"
: /* no outputs */
: "r" (d0)
: "d0", "d1", "d2", "d3", "d4", "d5", "d6",
"a0", "a1", "a2", "a3", "a4", "memory"
);
}
/*--------------------------------------------------------------------------*/
/* Call BVMBug reset entry.
*/
static __inline__ void BVMBug_reset(void) __attribute((noreturn));
static
__inline__
void
BVMBug_reset
( void
)
{
asm volatile (
"
move.w #0x2700,%%sr /* mask interrupts */
move.l 4(%0),%%a0 /* get reset PC */
move.l (%0),%%a7 /* get reset SP */
moveq #0,%%d0 /* clear cache control register */
movec %%d0,%%cacr
cinva %%bc /* invalidate data and instruction caches */
jmp (%%a0)
"
: /* no outputs */
: "a" (BVMBugEntry & 0xff000000)
: "a0", "d0"
);
/* stop compiler complaining that we will return */
while (1)
;
}
/*--------------------------------------------------------------------------*/
static
__inline__
int
BVMBug_tftp_read
( const char *filename,
unsigned long *count,
void *buffer,
unsigned long flags
)
{ register unsigned long d0 asm("d0") = (unsigned long) BB_TFTP_READ;
register unsigned long d1 asm("d1") = (unsigned long) *count;
register unsigned long d2 asm("d2") = (unsigned long) flags;
register void * a0 asm("a0") = (void *) filename;
register void * a1 asm("a1") = (void *) buffer;
asm volatile ( "trap #15"
: "=r" (d0), "=r" (d1)
: "r" (d0), "r" (d1), "r" (d2), "r" (a0), "r" (a1)
: "d0", "d1", "d2", "a0", "a1", "memory"
);
*count = d1;
return d0;
}
/*--------------------------------------------------------------------------*/
static
__inline__
const NETBOOTINFO *
BVMBug_netbootinfo
( void
)
{ register unsigned long d0 asm("d0") = (unsigned long) BB_NETBOOTINFO;
register NETBOOTINFO * a0 asm("a0");
asm volatile ( "trap #15"
: "=r" (a0)
: "r" (d0)
: "d0", "a0"
);
return a0;
}
/*--------------------------------------------------------------------------*/
static
__inline__
const char *
BVMBug_bootargs
( void
)
{ register unsigned long d0 asm("d0") = (unsigned long) BB_BOOTARGS;
register const char * a0 asm("a0");
asm volatile ( "trap #15"
: "=r" (a0)
: "r" (d0)
: "d0", "a0"
);
return a0;
}
/*-----------------------------< end of file >------------------------------*/
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