diff options
| author | Jeenu Viswambharan <jeenu.viswambharan@arm.com> | 2017-11-30 12:54:15 +0000 |
|---|---|---|
| committer | Jeenu Viswambharan <jeenu.viswambharan@arm.com> | 2018-05-04 08:32:42 +0100 |
| commit | 76454abf4a2a5df482a753fc435b2de0219659bf (patch) | |
| tree | 8195331234b5517463c1b60eafc6d56a7a134449 /make_helpers | |
| parent | ef653d93ccd6ba1888c61706469021fc623c3318 (diff) | |
AArch64: Introduce External Abort handling
At present, any External Abort routed to EL3 is reported as an unhandled
exception and cause a panic. This patch enables ARM Trusted Firmware to
handle External Aborts routed to EL3.
With this patch, when an External Abort is received at EL3, its handling
is delegated to plat_ea_handler() function. Platforms can provide their
own implementation of this function. This patch adds a weak definition
of the said function that prints out a message and just panics.
In order to support handling External Aborts at EL3, the build option
HANDLE_EA_EL3_FIRST must be set to 1.
Before this patch, HANDLE_EA_EL3_FIRST wasn't passed down to
compilation; this patch fixes that too.
Change-Id: I4d07b7e65eb191ff72d63b909ae9512478cd01a1
Signed-off-by: Jeenu Viswambharan <jeenu.viswambharan@arm.com>
Diffstat (limited to 'make_helpers')
| -rw-r--r-- | make_helpers/defaults.mk | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/make_helpers/defaults.mk b/make_helpers/defaults.mk index 9e95cd5a..00ac1268 100644 --- a/make_helpers/defaults.mk +++ b/make_helpers/defaults.mk @@ -92,6 +92,10 @@ GENERATE_COT := 0 # default, they are for Secure EL1. GICV2_G0_FOR_EL3 := 0 +# Route External Aborts to EL3. Disabled by default; External Aborts are handled +# by lower ELs. +HANDLE_EA_EL3_FIRST := 0 + # Whether system coherency is managed in hardware, without explicit software # operations. HW_ASSISTED_COHERENCY := 0 |