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-rw-r--r--arch/arm64/include/asm/archrandom.h14
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/archrandom.h b/arch/arm64/include/asm/archrandom.h
index 3fe02da70004..fc1594a0710e 100644
--- a/arch/arm64/include/asm/archrandom.h
+++ b/arch/arm64/include/asm/archrandom.h
@@ -4,6 +4,8 @@
#ifdef CONFIG_ARCH_RANDOM
+#include <linux/bug.h>
+#include <linux/kernel.h>
#include <linux/random.h>
#include <asm/cpufeature.h>
@@ -66,6 +68,18 @@ static inline bool __init __early_cpu_has_rndr(void)
return (ftr >> ID_AA64ISAR0_RNDR_SHIFT) & 0xf;
}
+static inline bool __init __must_check
+arch_get_random_seed_long_early(unsigned long *v)
+{
+ WARN_ON(system_state != SYSTEM_BOOTING);
+
+ if (!__early_cpu_has_rndr())
+ return false;
+
+ return __arm64_rndr(v);
+}
+#define arch_get_random_seed_long_early arch_get_random_seed_long_early
+
#else
static inline bool __arm64_rndr(unsigned long *v) { return false; }