program loading: provide one cache maintenance callback

Instead of having 2 different functions to call when a program
is loaded provide a single callback with flags parameter. The
previous callbacks for cache management routines did this:

for_each_program_segment:
	arch_program_segment_loaded(start, size);
arch_program_loaded();

Now, use one callback instead:
for_each_program_segment:
	arch_segment_loaded(start, size, SEG_FINAL?);

Change-Id: I3811cba92e3355d172f605e4444f053321b07a2a
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/8838
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

src/lib/selfboot.c

@@ -314,9 +314,16 @@ static int load_self_segments(
 	struct payload *payload)
 {
 	struct segment *ptr;
+	struct segment *last_non_empty;
 	const unsigned long one_meg = (1UL << 20);
 	unsigned long bounce_high = lb_end;
 
+	/* Determine last non-empty loaded segment. */
+	last_non_empty = NULL;
+	for(ptr = head->next; ptr != head; ptr = ptr->next)
+		if (ptr->s_filesz != 0)
+			last_non_empty = ptr;
+
 	for(ptr = head->next; ptr != head; ptr = ptr->next) {
 		if (bootmem_region_targets_usable_ram(ptr->s_dstaddr,
 							ptr->s_memsz))
@@ -442,17 +449,11 @@ static int load_self_segments(
 			 * Each architecture can perform additonal operations
 			 * on the loaded segment
 			 */
-			arch_program_segment_loaded((uintptr_t)dest,
-							ptr->s_memsz);
+			arch_segment_loaded((uintptr_t)dest, ptr->s_memsz,
+					last_non_empty == ptr ? SEG_FINAL : 0);
 		}
 	}
 
-	/*
-	 * Each architecture can perform additonal operations once the entire
-	 * program is loaded
-	 */
-	arch_program_loaded();
-
 	return 1;
 }