Commit 94156675 authored by Will Deacon's avatar Will Deacon
Browse files

Revert "arm64: dmi: Add SMBIOS/DMI support" 



This reverts commit a28e3f4b.

Ard and Yi Li report that this patch is broken by design, so revert it
and let them sort it out for 3.18 instead.

Reported-by: default avatarArd Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: default avatarWill Deacon <will.deacon@arm.com>
parent e4aa297a

arch/arm64/Kconfig

+0 −11
Original line number Diff line number Diff line
@@ -360,17 +360,6 @@ config EFI 
	  allow the kernel to be booted as an EFI application. This

	  is only useful on systems that have UEFI firmware.



config DMI

	bool "Enable support for SMBIOS (DMI) tables"

	depends on EFI

	default y

	help

	  This enables SMBIOS/DMI feature for systems.



	  This option is only useful on systems that have UEFI firmware.

	  However, even with this option, the resultant kernel should

	  continue to boot on existing non-UEFI platforms.



endmenu



menu "Userspace binary formats"

arch/arm64/include/asm/dmi.h

deleted100644 → 0
+0 −41
Original line number Diff line number Diff line 
/*

 * arch/arm64/include/asm/dmi.h

 *

 * Copyright (C) 2013 Linaro Limited.

 * Written by: Yi Li (yi.li@linaro.org)

 *

 * based on arch/ia64/include/asm/dmi.h

 *

 * This file is subject to the terms and conditions of the GNU General Public

 * License.  See the file "COPYING" in the main directory of this archive

 * for more details.

 */



#ifndef __ASM_DMI_H

#define __ASM_DMI_H



#include <linux/slab.h>

#include <linux/efi.h>



static inline void __iomem *dmi_remap(u64 phys, u64 size)

{

	void __iomem *p = efi_lookup_mapped_addr(phys);



	/*

	 * If the mapping spans multiple pages, do a minimal check to ensure

	 * that the mapping returned by efi_lookup_mapped_addr() covers the

	 * whole requested range (but ignore potential holes)

	 */

	if ((phys & ~PAGE_MASK) + size > PAGE_SIZE

	    && (p + size - 1) != efi_lookup_mapped_addr(phys + size - 1))

		return NULL;

	return p;

}



/* Reuse existing UEFI mappings for DMI */

#define dmi_alloc(l)			kzalloc(l, GFP_KERNEL)

#define dmi_early_remap(x, l)		dmi_remap(x, l)

#define dmi_early_unmap(x, l)

#define dmi_unmap(x)



#endif

arch/arm64/kernel/setup.c

+0 −2
Original line number Diff line number Diff line
@@ -43,7 +43,6 @@ 
#include <linux/of_fdt.h>

#include <linux/of_platform.h>

#include <linux/efi.h>

#include <linux/dmi.h>



#include <asm/fixmap.h>

#include <asm/cpu.h>
@@ -414,7 +413,6 @@ void __init setup_arch(char **cmdline_p) 
static int __init arm64_device_init(void)

{

	of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);

	dmi_scan_machine();

	return 0;

}

arch_initcall_sync(arm64_device_init);