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arch: arm: add explanatory comment for SPLIM_NS set functions

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This commit adds an inline explanatory comment in the API
for setting the non-secure stack-pointer limit registers, to
stress that the API is only applicable to Mainline ARMv8-M MCUs.

Signed-off-by: Ioannis Glaropoulos <Ioannis.Glaropoulos@nordicsemi.no>
This commit is contained in:
Ioannis Glaropoulos 2018-09-24 12:12:37 +02:00 • committed by Kumar Gala
commit 7d4339a920
1 changed files with 5 additions and 0 deletions
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5
arch/arm/core/cortex_m/tz/arm_core_tz.c
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@ -41,6 +41,11 @@ static void configure_nonsecure_control(u32_t spsel_ns, u32_t npriv_ns)
}
#if defined(CONFIG_ARMV8_M_MAINLINE)
/* Only ARMv8-M Mainline implementations have Non-Secure instances of
* Stack Pointer Limit registers.
*/
void tz_nonsecure_msplim_set(u32_t val)
{
__TZ_set_MSPLIM_NS(val);