Messages in this thread | | | From | <> | Subject | Re: [PATCH 1/2] ARM: at91: add sam_linux_is_in_normal_world() function | Date | Mon, 4 Jul 2022 06:19:17 +0000 |
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Hi, Clement,
On 06.06.2022 17:57, Clément Léger wrote: > EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe > > Add sam_linux_is_in_normal_world() which allows to know if Linux is > running in the normal world or not. This function is used by code > which needs to differentiate the world in which Linux is running. > > Signed-off-by: Clément Léger <clement.leger@bootlin.com> > --- > arch/arm/mach-at91/sam_secure.c | 6 ++++++ > arch/arm/mach-at91/sam_secure.h | 1 + > 2 files changed, 7 insertions(+) > > diff --git a/arch/arm/mach-at91/sam_secure.c b/arch/arm/mach-at91/sam_secure.c > index 2a01f7a7d13f..1ec8c8b9d119 100644 > --- a/arch/arm/mach-at91/sam_secure.c > +++ b/arch/arm/mach-at91/sam_secure.c > @@ -27,6 +27,12 @@ struct arm_smccc_res sam_smccc_call(u32 fn, u32 arg0, u32 arg1) > return res; > } > > +bool sam_linux_is_in_normal_world(void) > +{ > + /* If optee has been detected, then we are running in normal world */
In case optee hasn't been detected don't we run also in normal world? What I want to say is that maybe you can change the function name to something like sam_linux_is_optee_available().
Thank you, Claudiu Beznea
> + return optee_available; > +} > + > void __init sam_secure_init(void) > { > struct device_node *np; > diff --git a/arch/arm/mach-at91/sam_secure.h b/arch/arm/mach-at91/sam_secure.h > index 1e7d8b20ba1e..6d8c01f9c5f0 100644 > --- a/arch/arm/mach-at91/sam_secure.h > +++ b/arch/arm/mach-at91/sam_secure.h > @@ -14,5 +14,6 @@ > > void __init sam_secure_init(void); > struct arm_smccc_res sam_smccc_call(u32 fn, u32 arg0, u32 arg1); > +bool sam_linux_is_in_normal_world(void); > > #endif /* SAM_SECURE_H */ > -- > 2.36.1 >
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