1 files changed, 35 insertions, 0 deletions
diff --git a/include/asm-x86/dmi.h b/include/asm-x86/dmi.h
new file mode 100644
index 00000000000..8e2b0e6aa8e
--- /dev/null
+++ b/include/asm-x86/dmi.h
@@ -0,0 +1,35 @@
+#ifndef _ASM_X86_DMI_H
+#define _ASM_X86_DMI_H
+
+#include <asm/io.h>
+
+#ifdef CONFIG_X86_32
+
+/* 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