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  1. 15 Jun, 2018 1 commit
  3. 13 Jun, 2018 2 commits
    • Antonio Nino Diaz's avatar
      xlat v2: Introduce xlat granule size helpers · a0b9bb79
      Antonio Nino Diaz authored 
      

The function xlat_arch_is_granule_size_supported() can be used to check
if a specific granule size is supported. In Armv8, AArch32 only supports
4 KiB pages. AArch64 supports 4 KiB, 16 KiB or 64 KiB depending on the
implementation, which is detected at runtime.

The function xlat_arch_get_max_supported_granule_size() returns the max
granule size supported by the implementation.

Even though right now they are only used by SPM, they may be useful in
other places in the future. This patch moves the code currently in SPM
to the xlat tables lib so that it can be reused.

Change-Id: If54624a5ecf20b9b9b7f38861b56383a03bbc8a4
Signed-off-by: default avatarAntonio Nino Diaz <antonio.ninodiaz@arm.com>
      a0b9bb79
    • Antonio Nino Diaz's avatar
      SPM: Initialize SP args as expected by cm library · 83a393ba
      Antonio Nino Diaz authored 
      

In the context management library, cm_setup_context() takes the
information in ep_info to fill the registers x0-x7. This patch replaces
the current code that sets them manually by the correct initialization
code.

Change-Id: Id1fdf4681b154026c2e3af1f9b05b19582b7d16d
Signed-off-by: default avatarAntonio Nino Diaz <antonio.ninodiaz@arm.com>
      83a393ba
  5. 23 May, 2018 5 commits
  7. 15 May, 2018 1 commit
    • Sandrine Bailleux's avatar
      SPM: Do not trap S-EL0 access to SVE/SIMD/FP regs · 39848945
      Sandrine Bailleux authored 
      

This allows secure partitions to access these registers. This is
needed in some cases. For example, it has been reported that in order
to implement secure storage services, a secure partition needs to
encrypt/decrypt some authentication variables, which requires FP/SIMD
support.

Note that SPM will not do any saving/restoring of these registers on
behalf of the SP. This falls under the SP's responsibility.

Also note that if the SP gets preempted, it might not get a chance to
save/restore FP/SIMD registers first. This patch does not address this
problem. It only serves as a temporary solution to unblock development
on the secure partition side.

Change-Id: I3b8ccdebdac0219f6ac96ad66ab2be0be8374ad3
Signed-off-by: default avatarSandrine Bailleux <sandrine.bailleux@arm.com>
      39848945
  9. 17 Apr, 2018 1 commit
  11. 27 Mar, 2018 1 commit
    • Joel Hutton's avatar
      Clean usage of void pointers to access symbols · 9f85f9e3
      Joel Hutton authored 
      

Void pointers have been used to access linker symbols, by declaring an
extern pointer, then taking the address of it. This limits symbols
values to aligned pointer values. To remove this restriction an
IMPORT_SYM macro has been introduced, which declares it as a char
pointer and casts it to the required type.

Change-Id: I89877fc3b13ed311817bb8ba79d4872b89bfd3b0
Signed-off-by: default avatarJoel Hutton <Joel.Hutton@Arm.com>
      9f85f9e3
  13. 21 Mar, 2018 1 commit
    • Antonio Nino Diaz's avatar
      Rename 'smcc' to 'smccc' · 085e80ec
      Antonio Nino Diaz authored 
      

When the source code says 'SMCC' it is talking about the SMC Calling
Convention. The correct acronym is SMCCC. This affects a few definitions
and file names.

Some files have been renamed (smcc.h, smcc_helpers.h and smcc_macros.S)
but the old files have been kept for compatibility, they include the
new ones with an ERROR_DEPRECATED guard.

Change-Id: I78f94052a502436fdd97ca32c0fe86bd58173f2f
Signed-off-by: default avatarAntonio Nino Diaz <antonio.ninodiaz@arm.com>
      085e80ec
  15. 21 Feb, 2018 1 commit
  17. 10 Jan, 2018 1 commit
  19. 08 Jan, 2018 2 commits
  21. 12 Dec, 2017 1 commit
    • Sandrine Bailleux's avatar
      SPM: Fix MM_COMMUNICATE_AARCH32/64 parameters · 4d2787ce
      Sandrine Bailleux authored 
      This partially reverts commit d6b532b5

, keeping only the fixes to
the assertions. The changes related to the order of arguments passed
to the secure partition were not correct and violated the
specification of the SP_EVENT_COMPLETE SMC.

This patch also improves the MM_COMMUNICATE argument validation.  The
cookie argument, as it comes from normal world, can't be trusted and thus
needs to always be validated at run time rather than using an assertion.

Also validate the communication buffer address and return
INVALID_PARAMETER if it is zero, as per the MM specification.

Fix a few typos in comments and use the "secure partition" terminology
rather than "secure payload".

Change-Id: Ice6b7b5494b729dd44611f9a93d362c55ab244f7
Signed-off-by: default avatarSandrine Bailleux <sandrine.bailleux@arm.com>
      4d2787ce
  23. 06 Dec, 2017 2 commits
  25. 05 Dec, 2017 2 commits
  27. 15 Nov, 2017 2 commits
  29. 10 Nov, 2017 1 commit
    • Antonio Nino Diaz's avatar
      SPM: Fix pointer to MP info in boot info struct · ff7d0805
      Antonio Nino Diaz authored 
      

The MP info struct is placed right after the boot info struct. However,
when calculating the address of the MP info, the size of the boot info
struct was being multiplied by the size of the MP boot info. This left
a big gap of empty space between the structs.

This didn't break any code because the boot info struct has a pointer to
the MP info struct. It was just wasting space.

Change-Id: I1668e3540d9173261968f6740623549000bd48db
Signed-off-by: default avatarAntonio Nino Diaz <antonio.ninodiaz@arm.com>
      ff7d0805
  31. 08 Nov, 2017 1 commit
    • Antonio Nino Diaz's avatar
      SPM: Introduce Secure Partition Manager · 2fccb228
      Antonio Nino Diaz authored 
      

A Secure Partition is a software execution environment instantiated in
S-EL0 that can be used to implement simple management and security
services. Since S-EL0 is an unprivileged exception level, a Secure
Partition relies on privileged firmware e.g. ARM Trusted Firmware to be
granted access to system and processor resources. Essentially, it is a
software sandbox that runs under the control of privileged software in
the Secure World and accesses the following system resources:

- Memory and device regions in the system address map.
- PE system registers.
- A range of asynchronous exceptions e.g. interrupts.
- A range of synchronous exceptions e.g. SMC function identifiers.

A Secure Partition enables privileged firmware to implement only the
absolutely essential secure services in EL3 and instantiate the rest in
a partition. Since the partition executes in S-EL0, its implementation
cannot be overly complex.

The component in ARM Trusted Firmware responsible for managing a Secure
Partition is called the Secure Partition Manager (SPM). The SPM is
responsible for the following:

- Validating and allocating resources requested by a Secure Partition.
- Implementing a well defined interface that is used for initialising a
  Secure Partition.
- Implementing a well defined interface that is used by the normal world
  and other secure services for accessing the services exported by a
  Secure Partition.
- Implementing a well defined interface that is used by a Secure
  Partition to fulfil service requests.
- Instantiating the software execution environment required by a Secure
  Partition to fulfil a service request.

Change-Id: I6f7862d6bba8732db5b73f54e789d717a35e802f
Co-authored-by: default avatarDouglas Raillard <douglas.raillard@arm.com>
Co-authored-by: default avatarSandrine Bailleux <sandrine.bailleux@arm.com>
Co-authored-by: default avatarAchin Gupta <achin.gupta@arm.com>
Co-authored-by: default avatarAntonio Nino Diaz <antonio.ninodiaz@arm.com>
Signed-off-by: default avatarAntonio Nino Diaz <antonio.ninodiaz@arm.com>
      2fccb228