- Use the generally more appropriate PROM base rather than the

kernel one as the non-faulting flush address in the loader so
  we can can change KERNBASE and VM_MIN_KERNEL_ADDRESS if we
  ever want to without needing to worry about using a compatible
  loader.
- Correctly check for LOADER_DEBUG.
- Add a missing const for page_sizes[].

sys/boot/sparc64/loader/main.c

@@ -383,7 +383,7 @@ __elfN(exec)(struct preloaded_file *fp)
 		return (error);
 
 	printf("jumping to kernel entry at %#lx.\n", e->e_entry);
-#if LOADER_DEBUG
+#ifdef LOADER_DEBUG
 	pmap_print_tlb_sun4u();
 #endif
 
@@ -499,7 +499,7 @@ itlb_enter_sun4u(u_long vpn, u_long data)
 			stxa(AA_IMMU_TAR, ASI_IMMU,
 			     TLB_TAR_VA(vpn) | TLB_TAR_CTX(TLB_CTX_KERNEL));
 			stxa(TLB_DAR_SLOT(i), ASI_ITLB_DATA_ACCESS_REG, data);
-			flush(KERNBASE);
+			flush(PROMBASE);
 			break;
 		}
 		wrpr(pstate, reg, 0);
@@ -511,7 +511,7 @@ itlb_enter_sun4u(u_long vpn, u_long data)
 	stxa(AA_IMMU_TAR, ASI_IMMU,
 	     TLB_TAR_VA(vpn) | TLB_TAR_CTX(TLB_CTX_KERNEL));
 	stxa(0, ASI_ITLB_DATA_IN_REG, data);
-	flush(KERNBASE);
+	flush(PROMBASE);
 	wrpr(pstate, reg, 0);
 }
 
@@ -837,7 +837,7 @@ exit(int code)
 }
 
 #ifdef LOADER_DEBUG
-static const char *page_sizes[] = {
+static const char *const page_sizes[] = {
 	"  8k", " 64k", "512k", "  4m"
 };
 

sys/sparc64/include/vmparam.h

@@ -40,7 +40,6 @@
  * $FreeBSD$
  */
 
-
 #ifndef	_MACHINE_VMPARAM_H_
 #define	_MACHINE_VMPARAM_H_
 
@@ -203,6 +202,7 @@
 #define	VM_MAXUSER_ADDRESS	(VM_MAX_USER_ADDRESS)
 
 #define	KERNBASE		(VM_MIN_KERNEL_ADDRESS)
+#define	PROMBASE		(VM_MIN_PROM_ADDRESS)
 #define	USRSTACK		(VM_MAX_USER_ADDRESS)
 
 /*