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author | Jeenu Viswambharan <jeenu.viswambharan@arm.com> | 2017-11-30 12:54:15 +0000 |
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committer | Jeenu Viswambharan <jeenu.viswambharan@arm.com> | 2018-05-04 08:32:42 +0100 |
commit | 76454abf4a2a5df482a753fc435b2de0219659bf (patch) | |
tree | 8195331234b5517463c1b60eafc6d56a7a134449 /include/bl31 | |
parent | ef653d93ccd6ba1888c61706469021fc623c3318 (diff) | |
download | trusted-firmware-a-76454abf4a2a5df482a753fc435b2de0219659bf.tar.gz |
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 'include/bl31')
-rw-r--r-- | include/bl31/ea_handle.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/include/bl31/ea_handle.h b/include/bl31/ea_handle.h new file mode 100644 index 0000000000..285132b7eb --- /dev/null +++ b/include/bl31/ea_handle.h @@ -0,0 +1,18 @@ +/* + * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#ifndef __EA_HANDLE_H__ +#define __EA_HANDLE_H__ + +/* Constants indicating the reason for an External Abort */ + +/* External Abort received at SError vector */ +#define ERROR_EA_ASYNC 0 + +/* Synchronous External Abort received at Synchronous exception vector */ +#define ERROR_EA_SYNC 1 + +#endif /* __EA_HANDLE_H__ */ |