Add initial framework for the Tyan S1846.

It's not fully working, among other things because the Intel
440BX northbridge isn't working, yet.

Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2580 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

1 files changed, 32 insertions, 0 deletions

diff --git a/src/mainboard/tyan/s1846/failover.c b/src/mainboard/tyan/s1846/failover.c
new file mode 100644
index 0000000000..bdcb9eaed2
--- /dev/null
+++ b/src/mainboard/tyan/s1846/failover.c
@@ -0,0 +1,32 @@
+#define ASSEMBLY 1
+#include <stdint.h>
+#include <device/pci_def.h>
+#include <device/pci_ids.h>
+#include <arch/io.h>
+#include "arch/romcc_io.h"
+#include "pc80/mc146818rtc_early.c"
+
+static unsigned long main(unsigned long bist)
+{
+	/* This is the primary cpu how should I boot? */
+	if (do_normal_boot()) {
+		goto normal_image;
+	}
+	else {
+		goto fallback_image;
+	}
+ normal_image:
+	asm volatile ("jmp __normal_image" 
+		: /* outputs */ 
+		: "a" (bist) /* inputs */
+		: /* clobbers */
+		);
+ cpu_reset:
+	asm volatile ("jmp __cpu_reset"
+		: /* outputs */ 
+		: "a"(bist) /* inputs */
+		: /* clobbers */
+		);
+ fallback_image:
+	return bist;
+}