firmware/dmi_scan: generalize for use by other archs

This patch makes a couple of changes to the SMBIOS/DMI scanning
code so it can be used on other archs (such as ARM and arm64):
(a) wrap the calls to ioremap()/iounmap(), this allows the use of a
    flavor of ioremap() more suitable for random unaligned access;
(b) allow the non-EFI fallback probe into hardcoded physical address
    0xF0000 to be disabled.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Grant Likely <grant.likely@linaro.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc "Luck, Tony" <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 5 insertions, 3 deletions

diff --git a/arch/ia64/include/asm/dmi.h b/arch/ia64/include/asm/dmi.h
index 185d3d18d0ec..f365a61f5c71 100644
--- a/arch/ia64/include/asm/dmi.h
+++ b/arch/ia64/include/asm/dmi.h
@@ -5,8 +5,10 @@
 #include <asm/io.h>
 
 /* Use normal IO mappings for DMI */
-#define dmi_ioremap ioremap
-#define dmi_iounmap(x,l) iounmap(x)
-#define dmi_alloc(l) kzalloc(l, GFP_ATOMIC)
+#define dmi_early_remap         ioremap
+#define dmi_early_unmap(x, l)   iounmap(x)
+#define dmi_remap               ioremap
+#define dmi_unmap               iounmap
+#define dmi_alloc(l)            kzalloc(l, GFP_ATOMIC)
 
 #endif