x86: flatten hierarchy

It never made sense to have bootblock_* in init, but
pirq_routing.c in boot, and some ld scripts on the main
level while others live in subdirectories.

This patch flattens the directory hierarchy and makes
x86 more similar to the other architectures.

Change-Id: I4056038fe7813e4d3d3042c441e7ab6076a36384
Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-on: http://review.coreboot.org/10901
Tested-by: build bot (Jenkins)
Tested-by: Raptor Engineering Automated Test Stand <noreply@raptorengineeringinc.com>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>

src/arch/x86/bootblock_normal.c

@@ -0,0 +1,52 @@
+#include <smp/node.h>
+#include <bootblock_common.h>
+#include <pc80/mc146818rtc.h>
+#include <halt.h>
+
+static const char *get_fallback(const char *stagelist) {
+	while (*stagelist) stagelist++;
+	return ++stagelist;
+}
+
+static void main(unsigned long bist)
+{
+	unsigned long entry;
+	int boot_mode;
+	const char *default_filenames = "normal/romstage\0fallback/romstage";
+
+	if (boot_cpu()) {
+		bootblock_mainboard_init();
+
+#if CONFIG_USE_OPTION_TABLE
+		sanitize_cmos();
+#endif
+		boot_mode = do_normal_boot();
+	} else {
+
+		/* Questionable single byte read from CMOS.
+		 * Do not add any other CMOS access in the
+		 * bootblock for AP CPUs.
+		 */
+		boot_mode = last_boot_normal();
+	}
+
+	char *filenames = (char *)walkcbfs("coreboot-stages");
+	if (!filenames) {
+		filenames = default_filenames;
+	}
+	char *normal_candidate = filenames;
+
+	if (boot_mode)
+		entry = findstage(normal_candidate);
+	else
+		entry = findstage(get_fallback(normal_candidate));
+
+	if (entry) call(entry, bist);
+
+	/* run fallback if normal can't be found */
+	entry = findstage(get_fallback(normal_candidate));
+	if (entry) call(entry, bist);
+
+	/* duh. we're stuck */
+	halt();
+}