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Add special code for recognising a floppy drive as the boot device.

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Sun's PROMs don't co-operate here, so there are _hacks_ involved...
This commit is contained in:
pk 2000-01-09 20:53:30 +00:00
parent 0e7337b60e
commit 20018b9be8
1 changed files with 29 additions and 2 deletions
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31
sys/arch/sparc/sparc/autoconf.c
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@ -1,4 +1,4 @@
/* $NetBSD: autoconf.c,v 1.126 1999/11/13 00:32:13 thorpej Exp $ */
/* $NetBSD: autoconf.c,v 1.127 2000/01/09 20:53:30 pk Exp $ */
/*
* Copyright (c) 1996
@ -576,8 +576,11 @@ bootpath_fake(bp, cp)
/*
* Assume `fd(c,u,p)' means:
* partition `p' on floppy drive `u' on controller `c'
* Yet, for the purpose of determining the boot device,
* we support only one controller, so we encode the
* bootpath component by unit number, as on a v2 prom.
*/
BP_APPEND(bp, "fd", v0val[0], v0val[1], v0val[2]);
BP_APPEND(bp, "fd", -1, v0val[1], v0val[2]);
return;
}
@ -1695,6 +1698,7 @@ device_register(dev, aux)
strcmp(dvname, "espdma") == 0 ||
strcmp(dvname, "esp") == 0 ||
strcmp(dvname, "isp") == 0 ||
strcmp(dvname, "fdc") == 0 ||
strcmp(dvname, "xdc") == 0 ||
strcmp(dvname, "xyc") == 0 ) {
/*
@ -1702,6 +1706,19 @@ device_register(dev, aux)
* parameters and advance boot path on match.
*/
if (instance_match(dev, aux, bp) != 0) {
if (strcmp(dvname, "fdc") == 0) {
/*
* XXX - HACK ALERT
* Sun PROMs don't really seem to support
* multiple floppy drives. So we aren't
* going to, either. Since the PROM
* only provides a node for the floppy
* controller, we sneakily add a drive to
* the bootpath here.
*/
strcpy(bootpath[nbootpath].name, "fd");
nbootpath++;
}
altbootpath_store(1, bp + 1);
return;
}
@ -1767,6 +1784,16 @@ device_register(dev, aux)
nail_bootdev(dev, bp);
return;
}
} else if (strcmp("fd", dvname) == 0) {
/*
* Sun PROMs don't really seem to support multiple
* floppy drives. So we aren't going to, either.
* If we get this far, the `fdc controller' has
* already matched and has appended a fake `fd' entry
* to the bootpath, so just accept that as the boot device.
*/
nail_bootdev(dev, bp);
return;
} else {
/*
* Generic match procedure.