Change the following kernel options to environment variables:

    BOOTP -> bootp
    BOOTP_NFSROOT -> bootp.nfsroot
    BOOTP_NFSV3 -> bootp.nfsv3
    BOOTP_COMPAT -> bootp.compat
    BOOTP_WIRED_TO -> bootp.wired_to

This lets you PXE boot with a GENERIC kernel by putting this sort of thing
in loader.conf:

    bootp="YES"
    bootp.nfsroot="YES"
    bootp.nfsv3="YES"
    bootp.wired_to="bge1"

or even setting the variables manually from the OK prompt.

1 files changed, 11 insertions, 8 deletions

diff --git a/sys/amd64/amd64/autoconf.c b/sys/amd64/amd64/autoconf.c
index c646741..f5a4164 100644
--- a/sys/amd64/amd64/autoconf.c
+++ b/sys/amd64/amd64/autoconf.c
@@ -43,7 +43,6 @@ __FBSDID("$FreeBSD$");
  * devices are determined (from possibilities mentioned in ioconf.c),
  * and the drivers are initialized.
  */
-#include "opt_bootp.h"
 #include "opt_isa.h"
 #include "opt_nfs.h"
 #include "opt_nfsroot.h"
@@ -143,15 +142,19 @@ configure_final(dummy)
 void
 cpu_rootconf()
 {
-#ifdef BOOTP
-        bootpc_init();
-#endif
+	char	*cp;
+
+	if ((cp = getenv("bootp")) != NULL) {
+        	bootpc_init();
+		freeenv(cp);
+	}
 #if defined(NFSCLIENT) && defined(NFS_ROOT)
-#if !defined(BOOTP_NFSROOT)
-	nfs_setup_diskless();
-	if (nfs_diskless_valid)
-#endif
+	if ((cp = getenv("bootp.nfsroot")) == NULL)
+		nfs_setup_diskless();
+	if (cp != NULL || nfs_diskless_valid)
 		rootdevnames[0] = "nfs:";
+	if (cp != NULL)
+		freeenv(cp);
 #endif
 }
 SYSINIT(cpu_rootconf, SI_SUB_ROOT_CONF, SI_ORDER_FIRST, cpu_rootconf, NULL)