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Enable write-implies-execute-never when applicable #1550

Merged
merged 2 commits into from
May 29, 2017
Merged

Enable write-implies-execute-never when applicable #1550

merged 2 commits into from
May 29, 2017

Commits on May 29, 2017

  1. core: enable write-implies-execute-never when applicable 

    HW may or may not support STCLR "WXN" configuration field.
CFG_HWSUPP_MEM_PERM_WXN reflects this state. AArch64 is assumed to
always support this field.

Enable the "WXN" (and UWXN) bits in STCLR upon configuration directive
CFG_CORE_RWDATA_NOEXEC.

Signed-off-by: Etienne Carriere <[email protected]>
Acked-by: Jerome Forissier <[email protected]>
    @etienne-lms
    etienne-lms committed May 29, 2017
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  2. core: factorize cpu support 

    Create core/arch/arm/cpu/<cpu-name>.mk to store CPU generic configurations
settings. Update supported platforms to rely on the generic CPU support.

Platform shall still specify whether they support or not the NEON
extension.

Cortex-A53 and Cortex-A57 are all ARMv8.0 compliant. For ARMv8 core,
we will use ARMv8-A architecture minor version configuration files.

Signed-off-by: Etienne Carriere <[email protected]>
Acked-by: Jerome Forissier <[email protected]>
    @etienne-lms
    etienne-lms committed May 29, 2017
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