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  1. 09 Jan, 2020 2 commits
  3. 08 Jan, 2020 1 commit
  5. 07 Jan, 2020 2 commits
  7. 06 Jan, 2020 1 commit
  9. 03 Jan, 2020 1 commit
    • Vishnu Banavath's avatar
      drivers: add a driver for snoop control unit · c20c0525
      Vishnu Banavath authored 
      

The SCU connects one to four Cortex-A5/Cortex-A9 processors
to the memory system through the AXI interfaces.

The SCU functions are to:
- maintain data cache coherency between the Cortex-A5/Cortex-A9
  processors
- initiate L2 AXI memory accesses
- arbitrate between Cortex-A5/Cortex-A9 processors requesting
  L2 accesses
- manage ACP accesses.

Snoop Control Unit will enable to snoop on other CPUs caches.
This is very important when it comes to synchronizing data between
CPUs. As an example, there is a high chance that data might be
cache'd and other CPUs can't see the change. In such cases,
if snoop control unit is enabled, data is synchoronized immediately
between CPUs and the changes are visible to other CPUs.

This driver provides functionality to enable SCU as well as enabling
user to know the following
- number of CPUs present
- is a particular CPU operating in SMP mode or AMP mode
- data cache size of a particular CPU
- does SCU has ACP port
- is L2CPRESENT

Change-Id: I0d977970154fa60df57caf449200d471f02312a0
Signed-off-by: default avatarVishnu Banavath <vishnu.banavath@arm.com>
      c20c0525
  11. 29 Dec, 2019 1 commit
  13. 26 Dec, 2019 2 commits
  15. 20 Dec, 2019 5 commits
    • Paul Beesley's avatar
      spm-mm: Remove mm_svc.h header · 962c44e7
      Paul Beesley authored 
      

The contents of this header have been merged into the spm_mm_svc.h
header file.

Change-Id: I01530b2e4ec1b4c091ce339758025e2216e740a4
Signed-off-by: default avatarPaul Beesley <paul.beesley@arm.com>
      962c44e7
    • Paul Beesley's avatar
      spm-mm: Refactor spm_svc.h and its contents · 0bf9f567
      Paul Beesley authored 
      

Change-Id: I91c192924433226b54d33e57d56d146c1c6df81b
Signed-off-by: default avatarPaul Beesley <paul.beesley@arm.com>
      0bf9f567
    • Paul Beesley's avatar
      spm-mm: Refactor secure_partition.h and its contents · aeaa225c
      Paul Beesley authored 
      

Before adding any new SPM-related components we should first do
some cleanup around the existing SPM-MM implementation. The aim
is to make sure that any SPM-MM components have names that clearly
indicate that they are MM-related. Otherwise, when adding new SPM
code, it could quickly become confusing as it would be unclear to
which component the code belongs.

The secure_partition.h header is a clear example of this, as the
name is generic so it could easily apply to any SPM-related code,
when it is in fact SPM-MM specific.

This patch renames the file and the two structures defined within
it, and then modifies any references in files that use the header.

Change-Id: I44bd95fab774c358178b3e81262a16da500fda26
Signed-off-by: default avatarPaul Beesley <paul.beesley@arm.com>
      aeaa225c
    • Paul Beesley's avatar
      spm: Remove SPM Alpha 1 prototype and support files · 538b0020
      Paul Beesley authored 
      

The Secure Partition Manager (SPM) prototype implementation is
being removed. This is preparatory work for putting in place a
dispatcher component that, in turn, enables partition managers
at S-EL2 / S-EL1.

This patch removes:

- The core service files (std_svc/spm)
- The Resource Descriptor headers (include/services)
- SPRT protocol support and service definitions
- SPCI protocol support and service definitions

Change-Id: Iaade6f6422eaf9a71187b1e2a4dffd7fb8766426
Signed-off-by: default avatarPaul Beesley <paul.beesley@arm.com>
Signed-off-by: default avatarArtsem Artsemenka <artsem.artsemenka@arm.com>
      538b0020
    • Paul Beesley's avatar
      Remove dependency between SPM_MM and ENABLE_SPM build flags · 3f3c341a
      Paul Beesley authored 
      

There are two different implementations of Secure Partition
management in TF-A. One is based on the "Management Mode" (MM)
design, the other is based on the Secure Partition Client Interface
(SPCI) specification. Currently there is a dependency between their
build flags that shouldn't exist, making further development
harder than it should be. This patch removes that
dependency, making the two flags function independently.

Before: ENABLE_SPM=1 is required for using either implementation.
        By default, the SPCI-based implementation is enabled and
        this is overridden if SPM_MM=1.

After: ENABLE_SPM=1 enables the SPCI-based implementation.
       SPM_MM=1 enables the MM-based implementation.
       The two build flags are mutually exclusive.

Note that the name of the ENABLE_SPM flag remains a bit
ambiguous - this will be improved in a subsequent patch. For this
patch the intention was to leave the name as-is so that it is
easier to track the changes that were made.

Change-Id: I8e64ee545d811c7000f27e8dc8ebb977d670608a
Signed-off-by: default avatarPaul Beesley <paul.beesley@arm.com>
      3f3c341a
  17. 19 Dec, 2019 1 commit
  19. 18 Dec, 2019 2 commits
  21. 17 Dec, 2019 20 commits
  23. 14 Dec, 2019 2 commits
    • Samuel Holland's avatar
      allwinner: h6: power: Switch to using the AXP driver · fb23b104
      Samuel Holland authored 
      

Chip ID checking and poweroff work just like they did before.
Regulators are now enabled just like on A64/H5.

This changes the signatures of the low-level register read/write
functions to match the interface expected by the common driver.
Signed-off-by: default avatarSamuel Holland <samuel@sholland.org>
Change-Id: I14d63d171a094fa1375904928270fa3e21761646
      fb23b104
    • Samuel Holland's avatar
      allwinner: Convert AXP803 regulator setup code into a driver · 0bc752c9
      Samuel Holland authored 
      

Previously, the A64/H5 and H6 platforms' PMIC setup code was entirely
independent. However, some H6 boards also need early regulator setup.

Most of the register interface and all of the device tree traversal code
can be reused between the AXP803 and AXP805. The main difference is the
hardware bus interface, so that part is left to the platforms. The
remainder is moved into a driver.

I factored out the bits that were obviously specific to the AXP803;
additional changes for compatibility with other PMICs can be made as
needed.

The only functional change is that rsb_init() now checks the PMIC's chip
ID register against the expected value. This was already being done in
the H6 version of the code.
Signed-off-by: default avatarSamuel Holland <samuel@sholland.org>
Change-Id: Icdcf9edd6565f78cccc503922405129ac27e08a2
      0bc752c9