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Merge pull request #351 from davwan01/davwan01/docs-update

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Some minor fixes to interrupt-framework-design.md
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danh-arm 2015-08-04 09:13:53 +01:00
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14
docs/interrupt-framework-design.md
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@ -629,11 +629,13 @@ for the following:
When an interrupt is received by the handler, it could check its id When an interrupt is received by the handler, it could check its id
to ensure it has been configured as a secure interrupt at the to ensure it has been configured as a secure interrupt at the
interrupt controller. A non-secure interrupt should never be handed interrupt controller. A non-secure interrupt should never be handed
to the secure interrupt handler. If the routing model chosen is such to the secure interrupt handler. A routing model could be chosen
that Secure-EL1 interrupts are not routed to EL3 when execution is where Secure-EL1 interrupts are routed to S-EL1 instead of EL3 when
in non-secure state, then a Secure-EL1 interrupt generated in the execution is in secure state. If the handler receives a Secure-EL1
secure state would be invalid. The handler could use the security interrupt it should check which security state has the interrupt
state flag to check this. originated from. A Secure-EL1 interrupt generated when execution is in
secure state would be invalid in this routing model. The handler could
use the security state flag to check this.
The SPD service should use the platform API: The SPD service should use the platform API:
`plat_ic_get_interrupt_type()` to determine the type of interrupt for the `plat_ic_get_interrupt_type()` to determine the type of interrupt for the
@ -770,7 +772,7 @@ in `tspd_smc_handler()` function upon receiving this SMC:
assertion is raised otherwise. assertion is raised otherwise.
2. Checks whether the TSP needs a resume i.e check if it was preempted. It 2. Checks whether the TSP needs a resume i.e check if it was preempted. It
then saves the system register context for the secure state by calling then saves the system register context for the non-secure state by calling
`cm_el1_sysregs_context_save(NON_SECURE)`. `cm_el1_sysregs_context_save(NON_SECURE)`.
3. Restores the secure context by calling 3. Restores the secure context by calling