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