Date: Wed, 30 Jan 2002 22:37:10 -0700 (MST) From: "M. Warner Losh" <imp@village.org> To: obrien@FreeBSD.ORG Cc: hackers@FreeBSD.ORG Subject: Re: JKH - Jr. Kernel Hacker task Message-ID: <20020130.223710.28874835.imp@village.org> In-Reply-To: <20020130175612.A81402@dragon.nuxi.com> References: <20020130175612.A81402@dragon.nuxi.com>
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In message: <20020130175612.A81402@dragon.nuxi.com>
"David O'Brien" <obrien@FreeBSD.ORG> writes:
: Right now one must hardcode compile the BPS rate into the kernel for
: serial consoles. This is just ridden with problems when machines move,
: or configurations shared.
:
: It would be really nice if the kernel would get the BPS rate from a
: loader environmental var instead of having it hard coded.
Does this patch work:
Index: sio.c
===================================================================
RCS file: /cache/ncvs/src/sys/dev/sio/sio.c,v
retrieving revision 1.362
diff -u -r1.362 sio.c
--- sio.c 17 Jan 2002 20:05:47 -0000 1.362
+++ sio.c 31 Jan 2002 05:35:16 -0000
@@ -431,6 +431,7 @@
SYSCTL_PROC(_machdep, OID_AUTO, conspeed, CTLTYPE_INT | CTLFLAG_RW,
0, 0, sysctl_machdep_comdefaultrate, "I", "");
+TUNABLE_INT("machdep.conspeed", &comdefaultrate);
#define SET_FLAG(dev, bit) device_set_flags(dev, device_get_flags(dev) | (bit))
#define CLR_FLAG(dev, bit) device_set_flags(dev, device_get_flags(dev) & ~(bit))
Warner
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