acrn-kernel/arch/ppc/boot/of1275/read.c

36 lines
760 B
C

/*
* Copyright (C) Paul Mackerras 1997.
* Copyright (C) Leigh Brown 2002.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#include "of1275.h"
int
read(ihandle instance, void *buf, int buflen)
{
struct prom_args {
char *service;
int nargs;
int nret;
ihandle instance;
void *buf;
int buflen;
int actual;
} args;
args.service = "read";
args.nargs = 3;
args.nret = 1;
args.instance = instance;
args.buf = buf;
args.buflen = buflen;
args.actual = -1;
(*of_prom_entry)(&args);
return args.actual;
}