[RFC/PATCH 2/3] arm: Add ARCH_WANT_OF_RANDOMNESS

[Laura Abbott]

The stack canary for ARM is currently the same across reboots
due to lack of randomness early enough. Add ARCH_WANT_OF_RANDOMNESS
to allow devices to add whatever randomness they need.

Signed-off-by: Laura Abbott <lauraa@xxxxxxxxxxxxxx>
---
 arch/arm/Kconfig              |    3 +++
 arch/arm/kernel/vmlinux.lds.S |    1 +
 2 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index e254198..7ab0db1 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -222,6 +222,9 @@ config NEED_RET_TO_USER
 config ARCH_MTD_XIP
 	bool
 
+config ARCH_WANT_OF_RANDOMNESS
+	def_bool n
+
 config VECTORS_BASE
 	hex
 	default 0xffff0000 if MMU || CPU_HIGH_VECTOR
diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S
index 7bcee5c..2198258 100644
--- a/arch/arm/kernel/vmlinux.lds.S
+++ b/arch/arm/kernel/vmlinux.lds.S
@@ -202,6 +202,7 @@ SECTIONS
 		INIT_SETUP(16)
 		INIT_CALLS
 		CON_INITCALL
+		EARLY_RANDOM_FUNCS
 		SECURITY_INITCALL
 		INIT_RAM_FS
 	}
-- 
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