NetBSD-5.0.2/usr.sbin/eeprom/ofhandlers.c
/* $NetBSD: ofhandlers.c,v 1.4 2008/04/28 20:24:15 martin Exp $ */
/*-
* Copyright (c) 1996 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/types.h>
#include <sys/ioctl.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <dev/ofw/openfirmio.h>
#include "defs.h"
extern char *path_openfirm;
extern int eval;
extern int verbose;
static char err_str[BUFSIZE];
static void of_notsupp (struct extabent *, struct ofiocdesc *, char *);
static void of_uint32h (struct extabent *, struct ofiocdesc *, char *);
static void of_uint32d (struct extabent *, struct ofiocdesc *, char *);
/*
* There are several known fields that I either don't know how to
* deal with or require special treatment.
*/
static struct extabent ofextab[] = {
{ "security-password", of_notsupp },
{ "security-mode", of_notsupp },
{ "oem-logo", of_notsupp },
{ "oem-banner", of_notsupp },
{ "real-base", of_uint32h },
{ "real-size", of_uint32h },
{ "load-base", of_uint32h },
{ "virt-base", of_uint32h },
{ "virt-size", of_uint32h },
{ "screen-#columns", of_uint32d },
{ "screen-#rows", of_uint32d },
{ "selftest-#megs", of_uint32d },
{ NULL, of_notsupp },
};
#define BARF(str1, str2) { \
snprintf(err_str, sizeof err_str, "%s: %s", (str1), (str2)); \
++eval; \
return (err_str); \
};
void
of_action(keyword, arg)
char *keyword, *arg;
{
char *cp;
if ((cp = of_handler(keyword, arg)) != NULL)
warnx("%s", cp);
return;
}
char *
of_handler(keyword, arg)
char *keyword, *arg;
{
struct ofiocdesc ofio;
struct extabent *ex;
char ofio_buf[BUFSIZE];
int fd, optnode;
if ((fd = open(path_openfirm, arg ? O_RDWR : O_RDONLY, 0640)) < 0)
BARF(path_openfirm, strerror(errno));
/* Check to see if it's a special-case keyword. */
for (ex = ofextab; ex->ex_keyword != NULL; ++ex)
if (strcmp(ex->ex_keyword, keyword) == 0)
break;
if (ioctl(fd, OFIOCGETOPTNODE, (char *)&optnode) < 0)
BARF("OFIOCGETOPTNODE", strerror(errno));
memset(&ofio_buf[0], 0, sizeof(ofio_buf));
memset(&ofio, 0, sizeof(ofio));
ofio.of_nodeid = optnode;
ofio.of_name = keyword;
ofio.of_namelen = strlen(ofio.of_name);
if (arg) {
if (verbose) {
printf("old: ");
ofio.of_buf = &ofio_buf[0];
ofio.of_buflen = sizeof(ofio_buf);
if (ioctl(fd, OFIOCGET, (char *)&ofio) < 0)
BARF("OFIOCGET", strerror(errno));
if (ofio.of_buflen <= 0) {
printf("nothing available for %s\n", keyword);
goto out;
}
if (ex->ex_keyword != NULL)
(*ex->ex_handler)(ex, &ofio, NULL);
else
printf("%s\n", ofio.of_buf);
}
out:
if (ex->ex_keyword != NULL)
(*ex->ex_handler)(ex, &ofio, arg);
else {
ofio.of_buf = arg;
ofio.of_buflen = strlen(arg);
}
if (ioctl(fd, OFIOCSET, (char *)&ofio) < 0)
BARF("invalid keyword", keyword);
if (verbose) {
printf("new: ");
if (ex->ex_keyword != NULL)
(*ex->ex_handler)(ex, &ofio, NULL);
else
printf("%s\n", ofio.of_buf);
}
} else {
ofio.of_buf = &ofio_buf[0];
ofio.of_buflen = sizeof(ofio_buf);
if (ioctl(fd, OFIOCGET, (char *)&ofio) < 0)
BARF("OFIOCGET", strerror(errno));
if (ofio.of_buflen <= 0) {
(void)snprintf(err_str, sizeof err_str,
"nothing available for %s", keyword);
return (err_str);
}
if (ex->ex_keyword != NULL)
(*ex->ex_handler)(ex, &ofio, NULL);
else
printf("%s=%s\n", keyword, ofio.of_buf);
}
(void)close(fd);
return (NULL);
}
/* ARGSUSED */
static void
of_notsupp(exent, ofiop, arg)
struct extabent *exent;
struct ofiocdesc *ofiop;
char *arg;
{
warnx("property `%s' not yet supported", exent->ex_keyword);
}
static void
of_uint32h(exent, ofiop, arg)
struct extabent *exent;
struct ofiocdesc *ofiop;
char *arg;
{
printf("%s=0x%08x\n", exent->ex_keyword, *(uint32_t *)ofiop->of_buf);
}
static void
of_uint32d(exent, ofiop, arg)
struct extabent *exent;
struct ofiocdesc *ofiop;
char *arg;
{
printf("%s=%d\n", exent->ex_keyword, *(uint32_t *)ofiop->of_buf);
}
/*
* XXX: This code is quite ugly. You have been warned.
* (Really! This is the only way I could get it to work!)
*/
void
of_dump()
{
struct ofiocdesc ofio1, ofio2;
struct extabent *ex;
char buf1[BUFSIZE], buf2[BUFSIZE], buf3[BUFSIZE], buf4[BUFSIZE];
int fd, optnode;
if ((fd = open(path_openfirm, O_RDONLY, 0640)) < 0)
err(1, "open: %s", path_openfirm);
if (ioctl(fd, OFIOCGETOPTNODE, (char *)&optnode) < 0)
err(1, "OFIOCGETOPTNODE");
memset(&ofio1, 0, sizeof(ofio1));
/* This will grab the first property name from OPIOCNEXTPROP. */
memset(buf1, 0, sizeof(buf1));
memset(buf2, 0, sizeof(buf2));
ofio1.of_nodeid = ofio2.of_nodeid = optnode;
ofio1.of_name = buf1;
ofio1.of_buf = buf2;
ofio2.of_name = buf3;
ofio2.of_buf = buf4;
/*
* For reference: ofio1 is for obtaining the name. Pass the
* name of the last property read in of_name, and the next one
* will be returned in of_buf. To get the first name, pass
* an empty string. There are no more properties when an
* empty string is returned.
*
* ofio2 is for obtaining the value associated with that name.
* For some crazy reason, it seems as if we need to do all
* of that gratuitious zapping and copying. *sigh*
*/
for (;;) {
ofio1.of_namelen = strlen(ofio1.of_name);
ofio1.of_buflen = sizeof(buf2);
if (ioctl(fd, OFIOCNEXTPROP, (char *)&ofio1) < 0) {
close(fd);
return;
/* err(1, "ioctl: OFIOCNEXTPROP"); */
}
/*
* The name of the property we wish to get the
* value for has been stored in the value field
* of ofio1. If the length of the name is 0, there
* are no more properties left.
*/
strcpy(ofio2.of_name, ofio1.of_buf); /* XXX strcpy is safe */
ofio2.of_namelen = strlen(ofio2.of_name);
if (ofio2.of_namelen == 0) {
(void)close(fd);
return;
}
memset(ofio2.of_buf, 0, sizeof(buf4));
ofio2.of_buflen = sizeof(buf4);
if (ioctl(fd, OFIOCGET, (char *)&ofio2) < 0)
err(1, "ioctl: OFIOCGET");
for (ex = ofextab; ex->ex_keyword != NULL; ++ex)
if (strcmp(ex->ex_keyword, ofio2.of_name) == 0)
break;
if (ex->ex_keyword != NULL)
(*ex->ex_handler)(ex, &ofio2, NULL);
else
printf("%s=%s\n", ofio2.of_name, ofio2.of_buf);
/*
* Place the name of the last read value back into
* ofio1 so that we may obtain the next name.
*/
memset(ofio1.of_name, 0, sizeof(buf1));
memset(ofio1.of_buf, 0, sizeof(buf2));
strcpy(ofio1.of_name, ofio2.of_name); /* XXX strcpy is safe */
}
/* NOTREACHED */
}