Merge branch 'x86-efi-for-linus' of git://git.kernel.org/pub/scm/linu…

…x/kernel/git/tip/tip

Pull x86/efi changes from Peter Anvin:
 "The bulk of these changes are cleaning up the efivars handling and
  breaking it up into a tree of files.  There are a number of fixes as
  well.

  The entire changeset is pretty big, but most of it is code movement.

  Several of these commits are quite new; the history got very messed up
  due to a mismerge with the urgent changes for rc8 which completely
  broke IA64, and so Ingo requested that we rebase it to straighten it
  out."

* 'x86-efi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  efi: remove "kfree(NULL)"
  efi: locking fix in efivar_entry_set_safe()
  efi, pstore: Read data from variable store before memcpy()
  efi, pstore: Remove entry from list when erasing
  efi, pstore: Initialise 'entry' before iterating
  efi: split efisubsystem from efivars
  efivarfs: Move to fs/efivarfs
  efivars: Move pstore code into the new EFI directory
  efivars: efivar_entry API
  efivars: Keep a private global pointer to efivars
  efi: move utf16 string functions to efi.h
  x86, efi: Make efi_memblock_x86_reserve_range more readable
  efivarfs: convert to use simple_open()

MAINTAINERS

@@ -3025,9 +3025,18 @@ F:	arch/ia64/kernel/efi.c
 F:	arch/x86/boot/compressed/eboot.[ch]
 F:	arch/x86/include/asm/efi.h
 F:	arch/x86/platform/efi/*
-F:	drivers/firmware/efivars.c
+F:	drivers/firmware/efi/*
 F:	include/linux/efi*.h
 
+EFI VARIABLE FILESYSTEM
+M:	Matthew Garrett <matthew.garrett@nebula.com>
+M:	Jeremy Kerr <jk@ozlabs.org>
+M:	Matt Fleming <matt.fleming@intel.com>
+T:	git git://git.kernel.org/pub/scm/linux/kernel/git/mfleming/efi.git
+L:	linux-efi@vger.kernel.org
+S:	Maintained
+F:	fs/efivarfs/
+
 EFIFB FRAMEBUFFER DRIVER
 L:	linux-fbdev@vger.kernel.org
 M:	Peter Jones <pjones@redhat.com>
@@ -6391,7 +6400,7 @@ S:	Maintained
 T:	git git://git.infradead.org/users/cbou/linux-pstore.git
 F:	fs/pstore/
 F:	include/linux/pstore*
-F:	drivers/firmware/efivars.c
+F:	drivers/firmware/efi/efi-pstore.c
 F:	drivers/acpi/apei/erst.c
 
 PTP HARDWARE CLOCK SUPPORT

arch/ia64/Kconfig

@@ -110,6 +110,7 @@ config DMI
 
 config EFI
 	bool
+	select UCS2_STRING
 	default y
 
 config SCHED_OMIT_FRAME_POINTER

arch/x86/platform/efi/efi.c

@@ -453,24 +453,25 @@ static void __init do_add_efi_memmap(void)
 
 int __init efi_memblock_x86_reserve_range(void)
 {
+	struct efi_info *e = &boot_params.efi_info;
 	unsigned long pmap;
 
 #ifdef CONFIG_X86_32
 	/* Can't handle data above 4GB at this time */
-	if (boot_params.efi_info.efi_memmap_hi) {
+	if (e->efi_memmap_hi) {
 		pr_err("Memory map is above 4GB, disabling EFI.\n");
 		return -EINVAL;
 	}
-	pmap = boot_params.efi_info.efi_memmap;
+	pmap =  e->efi_memmap;
 #else
-	pmap = (boot_params.efi_info.efi_memmap |
-		((__u64)boot_params.efi_info.efi_memmap_hi<<32));
+	pmap = (e->efi_memmap |	((__u64)e->efi_memmap_hi << 32));
 #endif
-	memmap.phys_map = (void *)pmap;
-	memmap.nr_map = boot_params.efi_info.efi_memmap_size /
-		boot_params.efi_info.efi_memdesc_size;
-	memmap.desc_version = boot_params.efi_info.efi_memdesc_version;
-	memmap.desc_size = boot_params.efi_info.efi_memdesc_size;
+	memmap.phys_map		= (void *)pmap;
+	memmap.nr_map		= e->efi_memmap_size /
+				  e->efi_memdesc_size;
+	memmap.desc_size	= e->efi_memdesc_size;
+	memmap.desc_version	= e->efi_memdesc_version;
+
 	memblock_reserve(pmap, memmap.nr_map * memmap.desc_size);
 
 	return 0;

drivers/firmware/Kconfig

@@ -36,42 +36,6 @@ config FIRMWARE_MEMMAP
 
       See also Documentation/ABI/testing/sysfs-firmware-memmap.
 
-config EFI_VARS
-	tristate "EFI Variable Support via sysfs"
-	depends on EFI
-	select UCS2_STRING
-	default n
-	help
-	  If you say Y here, you are able to get EFI (Extensible Firmware
-	  Interface) variable information via sysfs.  You may read,
-	  write, create, and destroy EFI variables through this interface.
-
-	  Note that using this driver in concert with efibootmgr requires
-	  at least test release version 0.5.0-test3 or later, which is
-	  available from Matt Domsch's website located at:
-	  <http://linux.dell.com/efibootmgr/testing/efibootmgr-0.5.0-test3.tar.gz>
-
-	  Subsequent efibootmgr releases may be found at:
-	  <http://linux.dell.com/efibootmgr>
-
-config EFI_VARS_PSTORE
-	bool "Register efivars backend for pstore"
-	depends on EFI_VARS && PSTORE
-	default y
-	help
-	  Say Y here to enable use efivars as a backend to pstore. This
-	  will allow writing console messages, crash dumps, or anything
-	  else supported by pstore to EFI variables.
-
-config EFI_VARS_PSTORE_DEFAULT_DISABLE
-	bool "Disable using efivars as a pstore backend by default"
-	depends on EFI_VARS_PSTORE
-	default n
-	help
-	  Saying Y here will disable the use of efivars as a storage
-	  backend for pstore by default. This setting can be overridden
-	  using the efivars module's pstore_disable parameter.
-
 config EFI_PCDP
 	bool "Console device selection via EFI PCDP or HCDP table"
 	depends on ACPI && EFI && IA64
@@ -165,5 +129,6 @@ config ISCSI_IBFT
 	  Otherwise, say N.
 
 source "drivers/firmware/google/Kconfig"
+source "drivers/firmware/efi/Kconfig"
 
 endmenu

drivers/firmware/Makefile

@@ -4,7 +4,6 @@
 obj-$(CONFIG_DMI)		+= dmi_scan.o
 obj-$(CONFIG_DMI_SYSFS)		+= dmi-sysfs.o
 obj-$(CONFIG_EDD)		+= edd.o
-obj-$(CONFIG_EFI_VARS)		+= efivars.o
 obj-$(CONFIG_EFI_PCDP)		+= pcdp.o
 obj-$(CONFIG_DELL_RBU)          += dell_rbu.o
 obj-$(CONFIG_DCDBAS)		+= dcdbas.o
@@ -14,3 +13,4 @@ obj-$(CONFIG_ISCSI_IBFT)	+= iscsi_ibft.o
 obj-$(CONFIG_FIRMWARE_MEMMAP)	+= memmap.o
 
 obj-$(CONFIG_GOOGLE_FIRMWARE)	+= google/
+obj-$(CONFIG_EFI)		+= efi/

drivers/firmware/efi/Kconfig

@@ -0,0 +1,39 @@
+menu "EFI (Extensible Firmware Interface) Support"
+	depends on EFI
+
+config EFI_VARS
+	tristate "EFI Variable Support via sysfs"
+	depends on EFI
+	default n
+	help
+	  If you say Y here, you are able to get EFI (Extensible Firmware
+	  Interface) variable information via sysfs.  You may read,
+	  write, create, and destroy EFI variables through this interface.
+
+	  Note that using this driver in concert with efibootmgr requires
+	  at least test release version 0.5.0-test3 or later, which is
+	  available from Matt Domsch's website located at:
+	  <http://linux.dell.com/efibootmgr/testing/efibootmgr-0.5.0-test3.tar.gz>
+
+	  Subsequent efibootmgr releases may be found at:
+	  <http://linux.dell.com/efibootmgr>
+
+config EFI_VARS_PSTORE
+	tristate "Register efivars backend for pstore"
+	depends on EFI_VARS && PSTORE
+	default y
+	help
+	  Say Y here to enable use efivars as a backend to pstore. This
+	  will allow writing console messages, crash dumps, or anything
+	  else supported by pstore to EFI variables.
+
+config EFI_VARS_PSTORE_DEFAULT_DISABLE
+	bool "Disable using efivars as a pstore backend by default"
+	depends on EFI_VARS_PSTORE
+	default n
+	help
+	  Saying Y here will disable the use of efivars as a storage
+	  backend for pstore by default. This setting can be overridden
+	  using the efivars module's pstore_disable parameter.
+
+endmenu

drivers/firmware/efi/Makefile

@@ -0,0 +1,6 @@
+#
+# Makefile for linux kernel
+#
+obj-y					+= efi.o vars.o
+obj-$(CONFIG_EFI_VARS)			+= efivars.o
+obj-$(CONFIG_EFI_VARS_PSTORE)		+= efi-pstore.o