x86: unify include/asm/dmi_32/64.h

Unification, so we have these things in one file.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

include/asm-x86/dmi.h

@@ -1,5 +1,35 @@
+#ifndef _ASM_X86_DMI_H
+#define _ASM_X86_DMI_H
+
+#include <asm/io.h>
+
 #ifdef CONFIG_X86_32
-# include "dmi_32.h"
-#else
-# include "dmi_64.h"
+
+/* Use early IO mappings for DMI because it's initialized early */
+#define dmi_ioremap bt_ioremap
+#define dmi_iounmap bt_iounmap
+#define dmi_alloc alloc_bootmem
+
+#else /* CONFIG_X86_32 */
+
+#define DMI_MAX_DATA 2048
+
+extern int dmi_alloc_index;
+extern char dmi_alloc_data[DMI_MAX_DATA];
+
+/* This is so early that there is no good way to allocate dynamic memory.
+   Allocate data in an BSS array. */
+static inline void *dmi_alloc(unsigned len)
+{
+	int idx = dmi_alloc_index;
+	if ((dmi_alloc_index += len) > DMI_MAX_DATA)
+		return NULL;
+	return dmi_alloc_data + idx;
+}
+
+#define dmi_ioremap early_ioremap
+#define dmi_iounmap early_iounmap
+
+#endif
+
 #endif