- Initial checkin of the freebios2 tree

git-svn-id: svn://svn.coreboot.org/coreboot/trunk@784 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

1 files changed, 25 insertions, 0 deletions

diff --git a/src/lib/fallback_boot.c b/src/lib/fallback_boot.c
new file mode 100644
index 000000000000..1bddd0a16922
--- /dev/null
+++ b/src/lib/fallback_boot.c
@@ -0,0 +1,25 @@
+#include <console/console.h>
+#include <part/fallback_boot.h>
+#include <pc80/mc146818rtc.h>
+#include <arch/io.h>
+
+void boot_successful(void)
+{
+	/* Remember I succesfully booted by setting
+	 * the initial boot direction
+	 * to the direction that I booted.
+	 */
+	unsigned char index, byte;
+	index = inb(RTC_PORT(0)) & 0x80;
+	index |= RTC_BOOT_BYTE;
+	outb(index, RTC_PORT(0));
+
+	byte = inb(RTC_PORT(1));
+	byte &= 0xfe;
+	byte |= (byte & 2) >> 1;
+
+	/* If we are in normal mode set the boot count to 0 */
+	if(byte & 1)
+		byte &= 0x0f;
+	outb(byte, RTC_PORT(1));
+}