Revert "Use broadcast SIPI to startup siblings"

This reverts commit 042c1461fb777e583e5de48edf9326e47ee5595f.

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>

1 files changed, 24 insertions, 0 deletions

diff --git a/src/arch/x86/include/arch/cpu.h b/src/arch/x86/include/arch/cpu.h
index 0fe5ea58b7..0dc92fba9e 100644
--- a/src/arch/x86/include/arch/cpu.h
+++ b/src/arch/x86/include/arch/cpu.h
@@ -158,6 +158,30 @@ struct cpu_driver {
 struct device;
 struct cpu_driver *find_cpu_driver(struct device *cpu);
 
+struct cpu_info {
+	device_t cpu;
+	unsigned long index;
+};
+
+static inline struct cpu_info *cpu_info(void)
+{
+	struct cpu_info *ci;
+	__asm__("andl %%esp,%0; "
+		"orl  %2, %0 "
+		:"=r" (ci)
+		: "0" (~(CONFIG_STACK_SIZE - 1)),
+		"r" (CONFIG_STACK_SIZE - sizeof(struct cpu_info))
+	);
+	return ci;
+}
+
+static inline unsigned long cpu_index(void)
+{
+	struct cpu_info *ci;
+	ci = cpu_info();
+	return ci->index;
+}
+
 struct cpuinfo_x86 {
         uint8_t    x86;            /* CPU family */
         uint8_t    x86_vendor;     /* CPU vendor */