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 /plat/common | |
| 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 'plat/common')
| -rw-r--r-- | plat/common/aarch64/plat_common.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/plat/common/aarch64/plat_common.c b/plat/common/aarch64/plat_common.c index 7a2f38cb..c4531565 100644 --- a/plat/common/aarch64/plat_common.c +++ b/plat/common/aarch64/plat_common.c @@ -28,6 +28,8 @@ #pragma weak plat_sdei_validate_entry_point #endif +#pragma weak plat_ea_handler + void bl31_plat_enable_mmu(uint32_t flags) { enable_mmu_el3(flags); @@ -105,3 +107,13 @@ int plat_sdei_validate_entry_point(uintptr_t ep, unsigned int client_mode) return 0; } #endif + +/* RAS functions common to AArch64 ARM platforms */ +void plat_ea_handler(unsigned int ea_reason, uint64_t syndrome, void *cookie, + void *handle, uint64_t flags) +{ + ERROR("Unhandled External Abort received on 0x%lx at EL3!\n", + read_mpidr_el1()); + ERROR(" exception reason=%u syndrome=0x%lx\n", ea_reason, syndrome); + panic(); +} |