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Diffstat (limited to 'docs/user-guide.rst')
| -rw-r--r-- | docs/user-guide.rst | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/docs/user-guide.rst b/docs/user-guide.rst index 70c1d5a9..b4201275 100644 --- a/docs/user-guide.rst +++ b/docs/user-guide.rst @@ -362,7 +362,7 @@ Common build options the ARMv8.3-PAuth registers to be included when saving and restoring the CPU context. Note that if the hardware supports this extension and this option is set to 0 the value of the registers will be leaked between Secure and - Non-secure worlds. The default is 0. + Non-secure worlds if PAuth is used on both sides. The default is 0. - ``DEBUG``: Chooses between a debug and release build. It can take either 0 (release) or 1 (debug) as values. 0 is the default. @@ -411,6 +411,13 @@ Common build options partitioning in EL3, however. Platform initialisation code should configure and use partitions in EL3 as required. This option defaults to ``0``. +- ``ENABLE_PAUTH``: Boolean option to enable ARMv8.3 Pointer Authentication + (``ARMv8.3-PAuth``) support in the Trusted Firmware itself. Note that this + option doesn't affect the saving of the registers introduced with this + extension, they are always saved if they are detected regardless of the value + of this option. If enabled, it is needed to use a compiler that supports the + option ``-msign-return-address``. It defaults to 0. + - ``ENABLE_PIE``: Boolean option to enable Position Independent Executable(PIE) support within generic code in TF-A. This option is currently only supported in BL31. Default is 0. |