ARM: add basic support for Trusted Foundations

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

diff --git a/arch/arm/firmware/Kconfig b/arch/arm/firmware/Kconfig
new file mode 100644 (file)
index 0000000..bb00ccf
--- /dev/null
+++ b/arch/arm/firmware/Kconfig
@@ -0,0 +1,28 @@
+config ARCH_SUPPORTS_FIRMWARE
+       bool
+
+config ARCH_SUPPORTS_TRUSTED_FOUNDATIONS
+       bool
+       select ARCH_SUPPORTS_FIRMWARE
+
+menu "Firmware options"
+       depends on ARCH_SUPPORTS_FIRMWARE
+
+config TRUSTED_FOUNDATIONS
+       bool "Trusted Foundations secure monitor support"
+       depends on ARCH_SUPPORTS_TRUSTED_FOUNDATIONS
+       help
+         Some devices (including most Tegra-based consumer devices on the
+         market) are booted with the Trusted Foundations secure monitor
+         active, requiring some core operations to be performed by the secure
+         monitor instead of the kernel.
+
+         This option allows the kernel to invoke the secure monitor whenever
+         required on devices using Trusted Foundations. See
+         arch/arm/include/asm/trusted_foundations.h or the
+         tl,trusted-foundations device tree binding documentation for details
+         on how to use it.
+
+         Say n if you don't know what this is about.
+
+endmenu