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Support multiple file open attempts without closing and reopening

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the underlying raw device (which is expensive and causes problems).
This allows the boot program to try a sequence of names by default,
which is used to support common boot media for sun3 and sun3x.
(Now tries "netbsd.$arch" before "netbsd")
This commit is contained in:
gwr 1998-06-29 20:17:03 +00:00
parent 8261ec142f
commit b339af5461
2 changed files with 128 additions and 20 deletions
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74
sys/arch/sun3/stand/netboot/boot.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: boot.c,v 1.3 1998/02/05 04:57:19 gwr Exp $ */
/* $NetBSD: boot.c,v 1.4 1998/06/29 20:17:03 gwr Exp $ */
/*-
* Copyright (c) 1982, 1986, 1990, 1993
@ -42,22 +42,44 @@
#include <stand.h>
#include "libsa.h"
char defname[32] = "netbsd.sun3";
#define XX "net"
/*
* If the kernel name was not specified, try the extended name,
* and if that is not found, try the default name, and if that
* is not found, ask the user for help.
*/
char defname[32] = "netbsd";
char extname[32] = "netbsd.sun3";
char line[80];
main()
{
struct open_file f;
char *cp, *file;
int io;
char *entry;
int io, x;
printf(">> NetBSD netboot [%s]\n", version);
printf(">> NetBSD " XX "boot [%s]\n", version);
prom_get_boot_info();
/*
* Hold the raw device open so it will not be
* closed and reopened on every attempt to
* load files that did not exist.
*/
f.f_flags = F_RAW;
if (devopen(&f, 0, &file)) {
printf(XX "boot: devopen failed\n");
return;
}
/* If running on a Sun3X, append an x. */
if (_is3x)
defname[11] = 'x';
file = defname;
extname[11] = 'x';
file = extname;
/* If the PROM gave us a file name, use it. */
cp = prom_bootfile;
if (cp && *cp)
file = cp;
@ -70,11 +92,43 @@ main()
file = line;
else
file = defname;
} else
printf("netboot: loading %s\n", file);
}
exec_sun(file, (char *)LOADADDR);
printf("netboot: %s: %s\n", file, strerror(errno));
#ifdef DEBUG
printf(XX "boot: trying \"%s\"\n", file);
#endif
/* Can we open the file? */
io = open(file, 0);
if (io < 0) {
/*
* Failed to open the file. If we were
* trying the extended name (first time)
* then quietly retry with the plain name.
*/
if (file == extname) {
file = defname;
continue;
}
goto err;
}
/* The open succeeded. Try loading. */
if (file != line)
printf(XX "boot: loading %s\n", file);
x = load_sun(io, (char *)LOADADDR, &entry);
close(io);
if (x == 0)
break;
err:
printf(XX "boot: %s: %s\n", file, strerror(errno));
prom_boothow |= RB_ASKNAME;
}
/* Do the "last close" on the underlying device. */
f.f_dev->dv_close(&f);
printf("Starting program at 0x%x\n", entry);
chain_to((void*)entry);
}

74
sys/arch/sun3/stand/ufsboot/boot.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: boot.c,v 1.3 1998/02/05 04:57:24 gwr Exp $ */
/* $NetBSD: boot.c,v 1.4 1998/06/29 20:17:03 gwr Exp $ */
/*-
* Copyright (c) 1982, 1986, 1990, 1993
@ -42,22 +42,44 @@
#include <stand.h>
#include "libsa.h"
char defname[32] = "netbsd.sun3";
#define XX "ufs"
/*
* If the kernel name was not specified, try the extended name,
* and if that is not found, try the default name, and if that
* is not found, ask the user for help.
*/
char defname[32] = "netbsd";
char extname[32] = "netbsd.sun3";
char line[80];
main()
{
struct open_file f;
char *cp, *file;
int io;
char *entry;
int io, x;
printf(">> NetBSD ufsboot [%s]\n", version);
printf(">> NetBSD " XX "boot [%s]\n", version);
prom_get_boot_info();
/*
* Hold the raw device open so it will not be
* closed and reopened on every attempt to
* load files that did not exist.
*/
f.f_flags = F_RAW;
if (devopen(&f, 0, &file)) {
printf(XX "boot: devopen failed\n");
return;
}
/* If running on a Sun3X, append an x. */
if (_is3x)
defname[11] = 'x';
file = defname;
extname[11] = 'x';
file = extname;
/* If the PROM gave us a file name, use it. */
cp = prom_bootfile;
if (cp && *cp)
file = cp;
@ -70,11 +92,43 @@ main()
file = line;
else
file = defname;
} else
printf("ufsboot: loading %s\n", file);
}
exec_sun(file, (char *)LOADADDR);
printf("ufsboot: %s: %s\n", file, strerror(errno));
#ifdef DEBUG
printf(XX "boot: trying \"%s\"\n", file);
#endif
/* Can we open the file? */
io = open(file, 0);
if (io < 0) {
/*
* Failed to open the file. If we were
* trying the extended name (first time)
* then quietly retry with the plain name.
*/
if (file == extname) {
file = defname;
continue;
}
goto err;
}
/* The open succeeded. Try loading. */
if (file != line)
printf(XX "boot: loading %s\n", file);
x = load_sun(io, (char *)LOADADDR, &entry);
close(io);
if (x == 0)
break;
err:
printf(XX "boot: %s: %s\n", file, strerror(errno));
prom_boothow |= RB_ASKNAME;
}
/* Do the "last close" on the underlying device. */
f.f_dev->dv_close(&f);
printf("Starting program at 0x%x\n", entry);
chain_to((void*)entry);
}