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

Dmitry Osipenko
2018-06-19T11:03:02Z

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(+)

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
--
2.17.1