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| author | Achin Gupta <achin.gupta@arm.com> | 2019-10-11 14:44:05 +0100 |
|---|---|---|
| committer | Artsem Artsemenka <artsem.artsemenka@arm.com> | 2019-12-06 17:42:45 +0000 |
| commit | 0376e7c4aa2ce9ae94d72555cea27cd7aff8e32a (patch) | |
| tree | e1e124d22ba67e58daa92a20d101302bb2071c54 /lib | |
| parent | 87b582ef5b31c5893a470b61c217931fc7602da3 (diff) | |
| download | platform_external_arm-trusted-firmware-0376e7c4aa2ce9ae94d72555cea27cd7aff8e32a.tar.gz platform_external_arm-trusted-firmware-0376e7c4aa2ce9ae94d72555cea27cd7aff8e32a.tar.bz2 platform_external_arm-trusted-firmware-0376e7c4aa2ce9ae94d72555cea27cd7aff8e32a.zip | |
Add support for enabling S-EL2
This patch adds support for enabling S-EL2 if this EL is specified in the entry
point information being used to initialise a secure context. It is the caller's
responsibility to check if S-EL2 is available on the system before requesting
this EL through the entry point information.
Signed-off-by: Achin Gupta <achin.gupta@arm.com>
Change-Id: I2752964f078ab528b2e80de71c7d2f35e60569e1
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/el3_runtime/aarch64/context_mgmt.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/el3_runtime/aarch64/context_mgmt.c b/lib/el3_runtime/aarch64/context_mgmt.c index d65e02d5e..752a2606e 100644 --- a/lib/el3_runtime/aarch64/context_mgmt.c +++ b/lib/el3_runtime/aarch64/context_mgmt.c @@ -181,6 +181,10 @@ void cm_setup_context(cpu_context_t *ctx, const entry_point_info_t *ep) scr_el3 |= SCR_HCE_BIT; } + /* Enable S-EL2 if the next EL is EL2 and security state is secure */ + if ((security_state == SECURE) && (GET_EL(ep->spsr) == MODE_EL2)) + scr_el3 |= SCR_EEL2_BIT; + /* * Initialise SCTLR_EL1 to the reset value corresponding to the target * execution state setting all fields rather than relying of the hw. |