Commit cf074402 authored by Ard Biesheuvel's avatar Ard Biesheuvel Committed by Linus Torvalds
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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: default avatarArd Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: default avatarGrant Likely <grant.likely@linaro.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc "Luck, Tony" <tony.luck@intel.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 3e2a4c18

arch/ia64/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -104,6 +104,7 @@ config HAVE_SETUP_PER_CPU_AREA 
config DMI

	bool

	default y

	select DMI_SCAN_MACHINE_NON_EFI_FALLBACK



config EFI

	bool

arch/ia64/include/asm/dmi.h

+5 −3
Original line number Diff line number Diff line
@@ -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_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

arch/x86/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -731,6 +731,7 @@ config APB_TIMER 
# The code disables itself when not needed.

config DMI

	default y

	select DMI_SCAN_MACHINE_NON_EFI_FALLBACK

	bool "Enable DMI scanning" if EXPERT

	---help---

	  Enabled scanning of DMI to identify machine quirks. Say Y

arch/x86/include/asm/dmi.h

+4 −2
Original line number Diff line number Diff line
@@ -13,7 +13,9 @@ static __always_inline __init void *dmi_alloc(unsigned len) 
}



/* Use early IO mappings for DMI because it's initialized early */

#define dmi_ioremap early_ioremap

#define dmi_iounmap early_iounmap

#define dmi_early_remap		early_ioremap

#define dmi_early_unmap		early_iounmap

#define dmi_remap		ioremap

#define dmi_unmap		iounmap



#endif /* _ASM_X86_DMI_H */

drivers/firmware/Kconfig

+3 −0
Original line number Diff line number Diff line
@@ -108,6 +108,9 @@ config DMI_SYSFS 
	  under /sys/firmware/dmi when this option is enabled and

	  loaded.



config DMI_SCAN_MACHINE_NON_EFI_FALLBACK

	bool



config ISCSI_IBFT_FIND

	bool "iSCSI Boot Firmware Table Attributes"

	depends on X86

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