diff options
Diffstat (limited to 'docs/user-guide.rst')
| -rw-r--r-- | docs/user-guide.rst | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/docs/user-guide.rst b/docs/user-guide.rst index 67af4256..80273be2 100644 --- a/docs/user-guide.rst +++ b/docs/user-guide.rst @@ -386,6 +386,19 @@ Common build options images will include support for Trusted Board Boot, but the FIP and FWU\_FIP will not include the corresponding certificates, causing a boot failure. +- ``GICV2_G0_FOR_EL3``: Unlike GICv3, the GICv2 architecture doesn't have + inherent support for specific EL3 type interrupts. Setting this build option + to ``1`` assumes GICv2 *Group 0* interrupts are expected to target EL3, both + by `platform abstraction layer`__ and `Interrupt Management Framework`__. + This allows GICv2 platforms to enable features requiring EL3 interrupt type. + This also means that all GICv2 Group 0 interrupts are delivered to EL3, and + the Secure Payload interrupts needs to be synchronously handed over to Secure + EL1 for handling. The default value of this option is ``0``, which means the + Group 0 interrupts are assumed to be handled by Secure EL1. + + .. __: `platform-interrupt-controller-API.rst` + .. __: `interrupt-framework-design.rst` + - ``HANDLE_EA_EL3_FIRST``: When defined External Aborts and SError Interrupts will be always trapped in EL3 i.e. in BL31 at runtime. |