Revert "Use broadcast SIPI to startup siblings"

This reverts commit 042c1461fb.

It turned out that sending IPIs via broadcast doesn't work on
Sandybridge. We tried to come up with a solution, but didn't
found any so far. So revert the code for now until we have
a working solution.

Change-Id: I7dd1cba5a4c1e4b0af366b20e8263b1f6f4b9714
Signed-off-by: Sven Schnelle <svens@stackframe.org>
Reviewed-on: http://review.coreboot.org/1381
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>

src/include/cpu/cpu.h

@@ -4,12 +4,10 @@
 #include <arch/cpu.h>
 
 #if !defined(__ROMCC__)
-void cpu_initialize(struct bus *cpu_bus, int index);
+void cpu_initialize(void);
 struct bus;
 void initialize_cpus(struct bus *cpu_bus);
-void secondary_cpu_init(int index);
-
-extern unsigned int cpucount;
+void secondary_cpu_init(void);
 
 #if !CONFIG_WAIT_BEFORE_CPUS_INIT
 	#define cpus_ready_for_init() do {} while(0)

src/include/cpu/x86/lapic.h

@@ -52,13 +52,20 @@ static inline __attribute__((always_inline)) unsigned long lapicid(void)
 }
 
 #ifndef __ROMCC__
+#if CONFIG_AP_IN_SIPI_WAIT != 1
+/* If we need to go back to sipi wait, we use the long non-inlined version of
+ * this function in lapic_cpu_init.c
+ */
 static inline __attribute__((always_inline)) void stop_this_cpu(void)
 {
-       /* Called by an AP when it is ready to halt and wait for a new task */
-       for(;;) {
-               hlt();
-       }
+	/* Called by an AP when it is ready to halt and wait for a new task */
+	for(;;) {
+		hlt();
+	}
 }
+#else
+void stop_this_cpu(void);
+#endif
 
 #if !defined(__PRE_RAM__)
 

src/include/device/path.h

@@ -41,7 +41,6 @@ struct apic_path
 	unsigned apic_id;
 	unsigned node_id;
 	unsigned core_id;
-	unsigned index;
 };
 
 struct ioapic_path