diff options
| author | Alexei Fedorov <Alexei.Fedorov@arm.com> | 2019-10-01 13:58:23 +0100 |
|---|---|---|
| committer | Alexei Fedorov <Alexei.Fedorov@arm.com> | 2019-10-03 14:43:55 +0100 |
| commit | 530ceda57288aa931d0c8ba7b3066340d587cc9b (patch) | |
| tree | 2dce6c07bcf6675c39b9455481f275f36f83b7e4 /bl1/aarch64 | |
| parent | ace23683beb81354d6edbc61c087ab8c384d0631 (diff) | |
TF-A: Add support for ARMv8.3-PAuth in BL1 SMC calls and BL2U
This patch adds support for ARMv8.3-PAuth in BL1 SMC calls and
BL2U image for firmware updates by programming APIAKey_EL1 registers
and enabling Pointer Authentication in EL3 and EL1 respectively.
Change-Id: I875d952aba8242caf74fb5f4f2d2af6f0c768c08
Signed-off-by: Alexei Fedorov <Alexei.Fedorov@arm.com>
Diffstat (limited to 'bl1/aarch64')
| -rw-r--r-- | bl1/aarch64/bl1_exceptions.S | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/bl1/aarch64/bl1_exceptions.S b/bl1/aarch64/bl1_exceptions.S index 3e72e39f..9bba6eef 100644 --- a/bl1/aarch64/bl1_exceptions.S +++ b/bl1/aarch64/bl1_exceptions.S @@ -226,6 +226,15 @@ smc_handler: */ bl save_gp_pmcr_pauth_regs +#if ENABLE_PAUTH + /* ----------------------------------------------------- + * Load and program stored APIAKey firmware key. + * Re-enable pointer authentication in EL3, as it was + * disabled before jumping to the next boot image. + * ----------------------------------------------------- + */ + bl pauth_load_bl1_apiakey_enable +#endif /* ----------------------------------------------------- * Populate the parameters for the SMC handler. We * already have x0-x4 in place. x5 will point to a |