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ARM: trusted_foundations: Provide information about whether firmware is registered

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Add a helper that provides information about whether Trusted Foundations
firmware operations have been registered.

Tested-by: Robert Yang <decatf@gmail.com>
Tested-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Dmitry Osipenko 2019-03-18 01:52:06 +03:00 • committed by Thierry Reding
parent 96446e21d6
commit ebc7c1a265
2 changed files with 12 additions and 0 deletions
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5
arch/arm/firmware/trusted_foundations.c
View file

@ -167,3 +167,8 @@ 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;
}

7
arch/arm/include/asm/trusted_foundations.h
View file

@ -31,6 +31,7 @@
#include <linux/of.h>
#include <linux/cpu.h>
#include <linux/smp.h>
#include <linux/types.h>
#include <asm/hardware/cache-l2x0.h>
#include <asm/outercache.h>
@ -50,6 +51,7 @@ 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 */
static inline void tf_dummy_write_sec(unsigned long val, unsigned int reg)
@ -84,6 +86,11 @@ 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