1 files changed, 18 insertions, 0 deletions
diff --git a/arch/x86/kernel/eisa.c b/arch/x86/kernel/eisa.c
new file mode 100644
index 000000000000..881f9236ebff
--- /dev/null
+++ b/arch/x86/kernel/eisa.c
@@ -0,0 +1,18 @@
+/*
+ * EISA specific code
+ *
+ * This file is licensed under the GPL V2
+ */
+#include <linux/ioport.h>
+#include <linux/eisa.h>
+
+static __init int eisa_bus_probe(void)
+{
+	void __iomem *p = ioremap(0x0FFFD9, 4);
+
+	if (readl(p) == 'E' + ('I'<<8) + ('S'<<16) + ('A'<<24))
+		EISA_bus = 1;
+	iounmap(p);
+	return 0;
+}
+subsys_initcall(eisa_bus_probe);