arm-trusted-firmware/common
Gerald Lejeune adb4fcfb4c Enable asynchronous abort exceptions during boot
Asynchronous abort exceptions generated by the platform during cold boot are
not taken in EL3 unless SCR_EL3.EA is set.

Therefore EA bit is set along with RES1 bits in early BL1 and BL31 architecture
initialisation. Further write accesses to SCR_EL3 preserve these bits during
cold boot.

A build flag controls SCR_EL3.EA value to keep asynchronous abort exceptions
being trapped by EL3 after cold boot or not.

For further reference SError Interrupts are also known as asynchronous external
aborts.

On Cortex-A53 revisions below r0p2, asynchronous abort exceptions are taken in
EL3 whatever the SCR_EL3.EA value is.

Fixes arm-software/tf-issues#368

Signed-off-by: Gerald Lejeune <gerald.lejeune@st.com>
2016-03-30 17:26:23 +02:00
..
aarch64 Remove all non-configurable dead loops 2016-03-14 16:41:18 +00:00
bl_common.c Add support for %p in tf_printf() 2016-02-18 09:45:39 +00:00
context_mgmt.c Enable asynchronous abort exceptions during boot 2016-03-30 17:26:23 +02:00
tf_printf.c Add support for %p in tf_printf() 2016-02-18 09:45:39 +00:00