The following patch appears to be needed:

--sjg

Index: sys/arch/sparc/sparc/cpu.c
===================================================================
RCS file: /cvsroot/src/sys/arch/sparc/sparc/cpu.c,v
retrieving revision 1.169
diff -u -p -r1.169 cpu.c
--- sys/arch/sparc/sparc/cpu.c	2003/01/20 20:51:33	1.169
+++ sys/arch/sparc/sparc/cpu.c	2003/01/21 05:26:04
@@ -133,12 +133,12 @@ void fpu_init __P((struct cpu_info *));
 #define SRMMU_IMPL(mmusr)	((u_int)(mmusr) >> 28)
 #define SRMMU_VERS(mmusr)	(((mmusr) >> 24) & 0xf)
 
+int bootmid;		/* Module ID of boot CPU */
 #if defined(MULTIPROCESSOR)
 void cpu_spinup __P((struct cpu_info *));
 struct cpu_info *alloc_cpuinfo_global_va __P((int, vsize_t *));
 struct cpu_info	*alloc_cpuinfo __P((void));
 
-int bootmid;		/* Module ID of boot CPU */
 int go_smp_cpus = 0;	/* non-primary cpu's wait for this to go */
 
 /* lock this to send IPI's */