commit b86048c40cb7d9ccd7aeac1681945676a6dc36ff
author Antonio Nino Diaz <antonio.ninodiaz@arm.com> Tue Feb 19 11:53:51 2019 +0000
committer Antonio Nino Diaz <antonio.ninodiaz@arm.com> Wed Feb 27 11:58:09 2019 +0000
tree 3a501b3395633ab07d312068c1dacd591493c7ac
parent 5283962ebaf77850d68bb457608ede5174e43159

Add support for pointer authentication

The previous commit added the infrastructure to load and save
ARMv8.3-PAuth registers during Non-secure <-> Secure world switches, but
didn't actually enable pointer authentication in the firmware.

This patch adds the functionality needed for platforms to provide
authentication keys for the firmware, and a new option (ENABLE_PAUTH) to
enable pointer authentication in the firmware itself. This option is
disabled by default, and it requires CTX_INCLUDE_PAUTH_REGS to be
enabled.

Change-Id: I35127ec271e1198d43209044de39fa712ef202a5
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>

include/arch/aarch64/arch_helpers.h

diff --git a/include/arch/aarch64/arch_helpers.h b/include/arch/aarch64/arch_helpers.h
index 4e459bb..e07db30 100644
--- a/include/arch/aarch64/arch_helpers.h
+++ b/include/arch/aarch64/arch_helpers.h
@@ -454,7 +454,8 @@
 DEFINE_RENAME_SYSREG_READ_FUNC(id_aa64mmfr2_el1, ID_AA64MMFR2_EL1)
 
 /* Armv8.3 Pointer Authentication Registers */
-DEFINE_RENAME_SYSREG_RW_FUNCS(apgakeylo_el1, APGAKeyLo_EL1)
+DEFINE_RENAME_SYSREG_RW_FUNCS(apiakeyhi_el1, APIAKeyHi_EL1)
+DEFINE_RENAME_SYSREG_RW_FUNCS(apiakeylo_el1, APIAKeyLo_EL1)
 
 #define IS_IN_EL(x) \
 	(GET_EL(read_CurrentEl()) == MODE_EL##x)