arm64: efi: add EFI stub

[firefly-linux-kernel-4.4.55.git] / arch / arm64 / Kconfig

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 9711a5fd948d126f3c457d1edc7ac720bd3c63b4..6c71f122638da90243d06de8542eeb5c3b9ba090 100644 (file)
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -17,6 +17,7 @@ config ARM64
        select GENERIC_CLOCKEVENTS
        select GENERIC_CLOCKEVENTS_BROADCAST if SMP
        select GENERIC_CPU_AUTOPROBE
+       select GENERIC_EARLY_IOREMAP
        select GENERIC_IOMAP
        select GENERIC_IRQ_PROBE
        select GENERIC_IRQ_SHOW
@@ -66,7 +67,7 @@ config ARCH_PHYS_ADDR_T_64BIT
 config MMU
        def_bool y
 
-config NO_IOPORT
+config NO_IOPORT_MAP
        def_bool y
 
 config STACKTRACE_SUPPORT
@@ -279,6 +280,20 @@ config CMDLINE_FORCE
          This is useful if you cannot or don't want to change the
          command-line options your boot loader passes to the kernel.
 
+config EFI
+       bool "UEFI runtime support"
+       depends on OF && !CPU_BIG_ENDIAN
+       select LIBFDT
+       select UCS2_STRING
+       select EFI_PARAMS_FROM_FDT
+       default y
+       help
+         This option provides support for runtime services provided
+         by UEFI firmware (such as non-volatile variables, realtime
+          clock, and platform reset). A UEFI stub is also provided to
+         allow the kernel to be booted as an EFI application. This
+         is only useful on systems that have UEFI firmware.
+
 endmenu
 
 menu "Userspace binary formats"
@@ -332,6 +347,8 @@ source "net/Kconfig"
 
 source "drivers/Kconfig"
 
+source "drivers/firmware/Kconfig"
+
 source "fs/Kconfig"
 
 source "arch/arm64/kvm/Kconfig"