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authorArd Biesheuvel <ardb@kernel.org>2020-09-23 11:20:10 +0300
committerArd Biesheuvel <ardb@kernel.org>2020-09-29 20:40:57 +0300
commit963fabf37f6a94214a823df0a785e653cb8ad6ea (patch)
tree580134c0c88daa1bc100ac9fd19810900130a0e7
parent5ee70cd60652e85e4e8ced99f58f2fcbab405110 (diff)
downloadlinux-963fabf37f6a94214a823df0a785e653cb8ad6ea.tar.xz
efi: efivars: limit availability to X86 builds
CONFIG_EFI_VARS controls the code that exposes EFI variables via sysfs entries, which was deprecated before support for non-Intel architectures was added to EFI. So let's limit its availability to Intel architectures for the time being, and hopefully remove it entirely in the not too distant future. While at it, let's remove the module alias so that the module is no longer loaded automatically. Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
-rw-r--r--Documentation/arm/uefi.rst2
-rw-r--r--drivers/firmware/efi/Kconfig13
-rw-r--r--drivers/firmware/efi/efivars.c1
3 files changed, 5 insertions, 11 deletions
diff --git a/Documentation/arm/uefi.rst b/Documentation/arm/uefi.rst
index f868330df6be..f732f957421f 100644
--- a/Documentation/arm/uefi.rst
+++ b/Documentation/arm/uefi.rst
@@ -23,7 +23,7 @@ makes it possible for the kernel to support additional features:
For actually enabling [U]EFI support, enable:
- CONFIG_EFI=y
-- CONFIG_EFI_VARS=y or m
+- CONFIG_EFIVAR_FS=y or m
The implementation depends on receiving information about the UEFI environment
in a Flattened Device Tree (FDT) - so is only available with CONFIG_OF.
diff --git a/drivers/firmware/efi/Kconfig b/drivers/firmware/efi/Kconfig
index 80f5c67e3638..da1887f72a51 100644
--- a/drivers/firmware/efi/Kconfig
+++ b/drivers/firmware/efi/Kconfig
@@ -4,20 +4,15 @@ menu "EFI (Extensible Firmware Interface) Support"
config EFI_VARS
tristate "EFI Variable Support via sysfs"
- depends on EFI
+ depends on EFI && (X86 || IA64)
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:
- <http://linux.dell.com/efibootmgr/testing/efibootmgr-0.5.0-test3.tar.gz>
-
- Subsequent efibootmgr releases may be found at:
- <http://github.com/vathpela/efibootmgr>
+ Note that this driver is only retained for compatibility with
+ legacy users: new users should use the efivarfs filesystem
+ instead.
config EFI_ESRT
bool
diff --git a/drivers/firmware/efi/efivars.c b/drivers/firmware/efi/efivars.c
index a76f50e15e6d..e6b16b3a17a8 100644
--- a/drivers/firmware/efi/efivars.c
+++ b/drivers/firmware/efi/efivars.c
@@ -22,7 +22,6 @@ MODULE_AUTHOR("Matt Domsch <Matt_Domsch@Dell.com>");
MODULE_DESCRIPTION("sysfs interface to EFI Variables");
MODULE_LICENSE("GPL");
MODULE_VERSION(EFIVARS_VERSION);
-MODULE_ALIAS("platform:efivars");
static LIST_HEAD(efivar_sysfs_list);