mirror of
https://gitlab.com/qemu-project/openbios.git
synced 2024-02-13 08:34:06 +08:00
5c9eb9b45b
git-svn-id: svn://coreboot.org/openbios/openbios-devel@1 f158a5a8-5612-0410-a976-696ce0be7e32
125 lines
2.6 KiB
C
125 lines
2.6 KiB
C
/*
|
|
* Creation Date: <2003/12/04 17:07:05 samuel>
|
|
* Time-stamp: <2004/01/07 19:36:09 samuel>
|
|
*
|
|
* <mac-parts.c>
|
|
*
|
|
* macintosh partition support
|
|
*
|
|
* Copyright (C) 2003, 2004 Samuel Rydh (samuel@ibrium.se)
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* version 2
|
|
*
|
|
*/
|
|
|
|
#include "openbios/config.h"
|
|
#include "openbios/bindings.h"
|
|
#include "mac-parts.h"
|
|
#include "modules.h"
|
|
|
|
typedef struct {
|
|
ullong offs;
|
|
ullong size;
|
|
} macparts_info_t;
|
|
|
|
DECLARE_NODE( macparts, INSTALL_OPEN, sizeof(macparts_info_t), "+/packages/mac-parts" );
|
|
|
|
|
|
#define SEEK( pos ) ({ DPUSH(pos); call_parent(seek_xt); POP(); })
|
|
#define READ( buf, size ) ({ PUSH((ucell)buf); PUSH(size); call_parent(read_xt); POP(); })
|
|
|
|
/* ( open -- flag ) */
|
|
static void
|
|
macparts_open( macparts_info_t *di )
|
|
{
|
|
char *str = my_args_copy();
|
|
xt_t seek_xt = find_parent_method("seek");
|
|
xt_t read_xt = find_parent_method("read");
|
|
int bs, parnum=-1;
|
|
desc_map_t dmap;
|
|
part_entry_t par;
|
|
|
|
/* printk("macparts_open '%s'\n", str ); */
|
|
|
|
if( str ) {
|
|
parnum = atol(str);
|
|
if( !strlen(str) )
|
|
parnum = 1;
|
|
free( str );
|
|
}
|
|
if( parnum < 0 )
|
|
parnum = 1;
|
|
|
|
SEEK( 0 );
|
|
if( READ(&dmap, sizeof(dmap)) != sizeof(dmap) )
|
|
RET(0);
|
|
|
|
/* partition maps might support multiple block sizes; in this case,
|
|
* pmPyPartStart is typically given in terms of 512 byte blocks.
|
|
*/
|
|
bs = dmap.sbBlockSize;
|
|
if( bs != 512 ) {
|
|
SEEK( 512 );
|
|
READ( &par, sizeof(par) );
|
|
if( par.pmSig == 0x504d /* 'PM' */ )
|
|
bs = 512;
|
|
}
|
|
SEEK( bs );
|
|
if( READ(&par, sizeof(par)) != sizeof(par) )
|
|
RET(0);
|
|
if( parnum > par.pmMapBlkCnt || par.pmSig != 0x504d /* 'PM' */ )
|
|
RET(0);
|
|
|
|
SEEK( (bs * parnum) );
|
|
READ( &par, sizeof(par) );
|
|
|
|
if( par.pmSig != 0x504d /* 'PM' */ || !par.pmPartBlkCnt )
|
|
RET(0);
|
|
|
|
di->offs = (llong)par.pmPyPartStart * bs;
|
|
di->size = (llong)par.pmPartBlkCnt * bs;
|
|
|
|
PUSH( -1 );
|
|
}
|
|
|
|
/* ( block0 -- flag? ) */
|
|
static void
|
|
macparts_probe( macparts_info_t *dummy )
|
|
{
|
|
desc_map_t *dmap = (desc_map_t*)POP();
|
|
|
|
if( dmap->sbSig != DESC_MAP_SIGNATURE )
|
|
RET(0);
|
|
RET(-1);
|
|
}
|
|
|
|
/* ( -- type offset.d size.d ) */
|
|
static void
|
|
macparts_get_info( macparts_info_t *di )
|
|
{
|
|
PUSH( -1 ); /* no type */
|
|
DPUSH( di->offs );
|
|
DPUSH( di->size );
|
|
}
|
|
|
|
static void
|
|
macparts_initialize( macparts_info_t *di )
|
|
{
|
|
fword("register-partition-package");
|
|
}
|
|
|
|
NODE_METHODS( macparts ) = {
|
|
{ "probe", macparts_probe },
|
|
{ "open", macparts_open },
|
|
{ "get-info", macparts_get_info },
|
|
{ NULL, macparts_initialize },
|
|
};
|
|
|
|
void
|
|
macparts_init( void )
|
|
{
|
|
REGISTER_NODE( macparts );
|
|
}
|