usr/src/psm/promif/ieee1275/sun4/prom_efcode.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright (c) 2000 by Sun Microsystems, Inc.
  24  * All rights reserved.
  25  */
  26
  27 #pragma ident   "%Z%%M% %I%     %E% SMI"
  28
  29 /*
  30  * Embedded Fcode Interpreter "get-fcode" client interfaces.
  31  */
  32
  33 #include <sys/promif.h>
  34 #include <sys/promimpl.h>
  35
  36 /*
  37  * Get Fcode size, test if OBP supports this interface.
  38  */
  39 int
  40 prom_get_fcode_size(char *str)
  41 {
  42         cell_t ci[5];
  43         int rv;
  44
  45         if (prom_test("SUNW,get-fcode-size") != 0) {
  46                 return (0);
  47         }
  48
  49         ci[0] = p1275_ptr2cell("SUNW,get-fcode-size");
  50         ci[1] = (cell_t)1;      /* 1 input arg: str */
  51         ci[2] = (cell_t)1;      /* 1 output result: len or zero */
  52         ci[3] = p1275_ptr2cell(str);
  53         ci[4] = (cell_t)0;
  54
  55         promif_preprom();
  56         rv = p1275_cif_handler(&ci);
  57         promif_postprom();
  58
  59         if (rv == 0)
  60                 return (p1275_cell2int(ci[4]));
  61         return (0);
  62 }
  63
  64 /*
  65  * Get Fcode into supplied buffer.
  66  */
  67 int
  68 prom_get_fcode(char *str, char *buf)
  69 {
  70         cell_t ci[6];
  71         int rv;
  72
  73         if (prom_test("SUNW,get-fcode") != 0) {
  74                 return (0);
  75         }
  76
  77         ci[0] = p1275_ptr2cell("SUNW,get-fcode");
  78         ci[1] = (cell_t)2;      /* 2 input args: str + buf */
  79         ci[2] = (cell_t)1;      /* 1 output result: true or false */
  80         ci[3] = p1275_ptr2cell(buf);    /* Arg#1: buffer to put fcode */
  81         ci[4] = p1275_ptr2cell(str);    /* Arg#2: name of drop-in */
  82         ci[5] = (cell_t)0;
  83
  84         promif_preprom();
  85         rv = p1275_cif_handler(&ci);
  86         promif_postprom();
  87
  88         if (rv == 0)
  89                 return (p1275_cell2int(ci[5]));
  90         return (0);
  91 }