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  1. 04 Mar, 2019 1 commit
  3. 01 Mar, 2019 1 commit
  5. 28 Feb, 2019 2 commits
  7. 27 Feb, 2019 2 commits
    • Antonio Nino Diaz's avatar
      Add support for pointer authentication · b86048c4
      Antonio Nino Diaz authored 
      

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: default avatarAntonio Nino Diaz <antonio.ninodiaz@arm.com>
      b86048c4
    • Antonio Nino Diaz's avatar
      Add ARMv8.3-PAuth registers to CPU context · 5283962e
      Antonio Nino Diaz authored 
      

ARMv8.3-PAuth adds functionality that supports address authentication of
the contents of a register before that register is used as the target of
an indirect branch, or as a load.

This feature is supported only in AArch64 state.

This feature is mandatory in ARMv8.3 implementations.

This feature adds several registers to EL1. A new option called
CTX_INCLUDE_PAUTH_REGS has been added to select if the TF needs to save
them during Non-secure <-> Secure world switches. This option must be
enabled if the hardware has the registers or the values will be leaked
during world switches.

To prevent leaks, this patch also disables pointer authentication in the
Secure world if CTX_INCLUDE_PAUTH_REGS is 0. Any attempt to use it will
be trapped in EL3.

Change-Id: I27beba9907b9a86c6df1d0c5bf6180c972830855
Signed-off-by: default avatarAntonio Nino Diaz <antonio.ninodiaz@arm.com>
      5283962e
  9. 26 Feb, 2019 1 commit
  11. 19 Feb, 2019 2 commits
  13. 18 Feb, 2019 1 commit
    • Antonio Nino Diaz's avatar
      Disable processor Cycle Counting in Secure state · ed4fc6f0
      Antonio Nino Diaz authored 
      

In a system with ARMv8.5-PMU implemented:

- If EL3 is using AArch32, setting MDCR_EL3.SCCD to 1 disables counting
  in Secure state in PMCCNTR.

- If EL3 is using AArch64, setting SDCR.SCCD to 1 disables counting in
  Secure state in PMCCNTR_EL0.

So far this effect has been achieved by setting PMCR_EL0.DP (in AArch64)
or PMCR.DP (in AArch32) to 1 instead, but this isn't considered secure
as any EL can change that value.

Change-Id: I82cbb3e48f2e5a55c44d9c4445683c5881ef1f6f
Signed-off-by: default avatarAntonio Nino Diaz <antonio.ninodiaz@arm.com>
      ed4fc6f0
  15. 08 Feb, 2019 2 commits
  17. 06 Feb, 2019 1 commit
  19. 30 Jan, 2019 1 commit
    • Sathees Balya's avatar
      lib/xlat_tables: Add support for ARMv8.4-TTST · cedfa04b
      Sathees Balya authored 
      

ARMv8.4-TTST (Small Translation tables) relaxes the lower limit on the
size of translation tables by increasing the maximum permitted value
of the T1SZ and T0SZ fields in TCR_EL1, TCR_EL2, TCR_EL3, VTCR_EL2 and
VSTCR_EL2.

This feature is supported in AArch64 state only.

This patch adds support for this feature to both versions of the
translation tables library. It also removes the static build time
checks for virtual address space size checks to runtime assertions.

Change-Id: I4e8cebc197ec1c2092dc7d307486616786e6c093
Signed-off-by: default avatarSathees Balya <sathees.balya@arm.com>
      cedfa04b
  21. 23 Jan, 2019 1 commit
  23. 11 Jan, 2019 1 commit
    • Antonio Nino Diaz's avatar
      xlat v2: Dynamically detect need for CnP bit · 2559b2c8
      Antonio Nino Diaz authored 
      

ARMv8.2-TTCNP is mandatory from ARMv8.2 onwards, but it can be implemented
in CPUs that don't implement all mandatory 8.2 features (and so have to
claim to be a lower version).

This patch removes usage of the ARM_ARCH_AT_LEAST() macro and uses system
ID registers to detect whether it is needed to set the bit or not.

Change-Id: I7bcbf0c7c937590dfc2ca668cfd9267c50f7d52c
Signed-off-by: default avatarAntonio Nino Diaz <antonio.ninodiaz@arm.com>
      2559b2c8
  25. 04 Jan, 2019 2 commits
    • Antonio Nino Diaz's avatar
      Sanitise includes across codebase · 09d40e0e
      Antonio Nino Diaz authored 
      Enforce full include path for includes. Deprecate old paths.

The following folders inside include/lib have been left unchanged:

- include/lib/cpus/${ARCH}
- include/lib/el3_runtime/${ARCH}

The reason for this change is that having a global namespace for
includes isn't a good idea. It defeats one of the advantages of having
folders and it introduces problems that are sometimes subtle (because
you may not know the header you are actually including if there are two
of them).

For example, this patch had to be created because two headers were
called the same way: e0ea0928 ("Fix gpio includes of mt8173 platform
to avoid collision."). More recently, this patch has had similar
problems: 46f9b2c3 ("drivers: add tzc380 support").

This problem was introduced in commit 4ecca339

 ("Move include and
source files to logical locations"). At that time, there weren't too
many headers so it wasn't a real issue. However, time has shown that
this creates problems.

Platforms that want to preserve the way they include headers may add the
removed paths to PLAT_INCLUDES, but this is discouraged.

Change-Id: I39dc53ed98f9e297a5966e723d1936d6ccf2fc8f
Signed-off-by: default avatarAntonio Nino Diaz <antonio.ninodiaz@arm.com>
      09d40e0e
    • Antonio Nino Diaz's avatar
      Reorganize architecture-dependent header files · f5478ded
      Antonio Nino Diaz authored 
      

The architecture dependant header files in include/lib/${ARCH} and
include/common/${ARCH} have been moved to /include/arch/${ARCH}.

Change-Id: I96f30fdb80b191a51448ddf11b1d4a0624c03394
Signed-off-by: default avatarAntonio Nino Diaz <antonio.ninodiaz@arm.com>
      f5478ded