diff options
| author | Soby Mathew <soby.mathew@arm.com> | 2019-07-12 09:23:38 +0100 |
|---|---|---|
| committer | Soby Mathew <soby.mathew@arm.com> | 2019-07-12 09:27:25 +0100 |
| commit | b7e398d64cc4d5bfe279f1a50b7c7e4ea9263534 (patch) | |
| tree | f863afea96c59705f84614baedc2e6ea145ffa49 /lib | |
| parent | 21bde92ff6d20ef2d3a2651fd729a1579232313b (diff) | |
Enable MTE support unilaterally for Normal World
This patch enables MTE for Normal world if the CPU suppors it. Enabling
MTE for secure world will be done later.
Change-Id: I9ef64460beaba15e9a9c20ab02da4fb2208b6f7d
Signed-off-by: Soby Mathew <soby.mathew@arm.com>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/el3_runtime/aarch64/context_mgmt.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/lib/el3_runtime/aarch64/context_mgmt.c b/lib/el3_runtime/aarch64/context_mgmt.c index 89d7ed68..05ba5ed6 100644 --- a/lib/el3_runtime/aarch64/context_mgmt.c +++ b/lib/el3_runtime/aarch64/context_mgmt.c @@ -12,6 +12,7 @@ #include <arch.h> #include <arch_helpers.h> +#include <arch_features.h> #include <bl31/interrupt_mgmt.h> #include <common/bl_common.h> #include <context.h> @@ -136,6 +137,18 @@ void cm_setup_context(cpu_context_t *ctx, const entry_point_info_t *ep) scr_el3 |= SCR_API_BIT | SCR_APK_BIT; #endif /* !CTX_INCLUDE_PAUTH_REGS */ + unsigned int mte = get_armv8_5_mte_support(); + + /* + * Enable MTE support unilaterally for normal world if the CPU supports + * it. + */ + if (mte != MTE_UNIMPLEMENTED) { + if (security_state == NON_SECURE) { + scr_el3 |= SCR_ATA_BIT; + } + } + #ifdef IMAGE_BL31 /* * SCR_EL3.IRQ, SCR_EL3.FIQ: Enable the physical FIQ and IRQ routing as |