[v2,2/5] ARM: trusted_foundations: Provide information about whether firmware is registered

Message ID 20180619110027.16935-3-digetx@gmail.com
State New
Headers show
Series
  • Initial support of Trusted Foundations on Tegra30
Related show

Commit Message

Dmitry Osipenko June 19, 2018, 11 a.m.
Add a helper that provides information about whether Trusted Foundations
firmware operations have been registered.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
 arch/arm/firmware/trusted_foundations.c    | 5 +++++
 arch/arm/include/asm/trusted_foundations.h | 7 +++++++
 2 files changed, 12 insertions(+)

Patch

diff --git a/arch/arm/firmware/trusted_foundations.c b/arch/arm/firmware/trusted_foundations.c
index 30df6547020f..f6eeb67de217 100644
--- a/arch/arm/firmware/trusted_foundations.c
+++ b/arch/arm/firmware/trusted_foundations.c
@@ -124,3 +124,8 @@  void of_register_trusted_foundations(void)
 		panic("Trusted Foundation: missing version-minor property\n");
 	register_trusted_foundations(&pdata);
 }
+
+bool trusted_foundations_registered(void)
+{
+	return firmware_ops == &trusted_foundations_ops;
+}
diff --git a/arch/arm/include/asm/trusted_foundations.h b/arch/arm/include/asm/trusted_foundations.h
index 00748350cf72..bfd0d780824b 100644
--- a/arch/arm/include/asm/trusted_foundations.h
+++ b/arch/arm/include/asm/trusted_foundations.h
@@ -31,6 +31,7 @@ 
 #include <linux/of.h>
 #include <linux/cpu.h>
 #include <linux/smp.h>
+#include <linux/types.h>
 
 struct trusted_foundations_platform_data {
 	unsigned int version_major;
@@ -41,6 +42,7 @@  struct trusted_foundations_platform_data {
 
 void register_trusted_foundations(struct trusted_foundations_platform_data *pd);
 void of_register_trusted_foundations(void);
+bool trusted_foundations_registered(void);
 
 #else /* CONFIG_TRUSTED_FOUNDATIONS */
 
@@ -68,6 +70,11 @@  static inline void of_register_trusted_foundations(void)
 	if (of_find_compatible_node(NULL, NULL, "tlm,trusted-foundations"))
 		register_trusted_foundations(NULL);
 }
+
+static inline bool trusted_foundations_registered(void)
+{
+	return false;
+}
 #endif /* CONFIG_TRUSTED_FOUNDATIONS */
 
 #endif