prom_efcode.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 2000 by Sun Microsystems, Inc.
* All rights reserved.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* Embedded Fcode Interpreter "get-fcode" client interfaces.
*/
#include <sys/promif.h>
#include <sys/promimpl.h>
/*
* Get Fcode size, test if OBP supports this interface.
*/
int
prom_get_fcode_size(char *str)
{
cell_t ci[5];
int rv;
if (prom_test("SUNW,get-fcode-size") != 0) {
return (0);
}
ci[0] = p1275_ptr2cell("SUNW,get-fcode-size");
ci[1] = (cell_t)1; /* 1 input arg: str */
ci[2] = (cell_t)1; /* 1 output result: len or zero */
ci[3] = p1275_ptr2cell(str);
ci[4] = (cell_t)0;
promif_preprom();
rv = p1275_cif_handler(&ci);
promif_postprom();
if (rv == 0)
return (p1275_cell2int(ci[4]));
return (0);
}
/*
* Get Fcode into supplied buffer.
*/
int
prom_get_fcode(char *str, char *buf)
{
cell_t ci[6];
int rv;
if (prom_test("SUNW,get-fcode") != 0) {
return (0);
}
ci[0] = p1275_ptr2cell("SUNW,get-fcode");
ci[1] = (cell_t)2; /* 2 input args: str + buf */
ci[2] = (cell_t)1; /* 1 output result: true or false */
ci[3] = p1275_ptr2cell(buf); /* Arg#1: buffer to put fcode */
ci[4] = p1275_ptr2cell(str); /* Arg#2: name of drop-in */
ci[5] = (cell_t)0;
promif_preprom();
rv = p1275_cif_handler(&ci);
promif_postprom();
if (rv == 0)
return (p1275_cell2int(ci[5]));
return (0);
}