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  1. 31 Jul, 2017 3 commits
  3. 26 Jul, 2017 3 commits
    • davidcunado-arm's avatar
      Merge pull request #1032 from soby-mathew/sm/css_scp_reorg · 401e4911
      davidcunado-arm authored 
      Reorganise CSS SCP bootloader layer
      401e4911
    • davidcunado-arm's avatar
      Merge pull request #1031 from robertovargas-arm/assert_format · 881cf374
      davidcunado-arm authored 
      Use standard UNIX file:line format in assert
      881cf374
    • David Cunado's avatar
      Address edge case for stale PSCI CPU data in cache · 71341d23
      David Cunado authored 
      

There is a theoretical edge case during CPU_ON where the cache
may contain stale data for the target CPU data - this can occur
under the following conditions:

- the target CPU is in another cluster from the current
- the target CPU was the last CPU to shutdown on its cluster
- the cluster was removed from coherency as part of the CPU shutdown

In this case the cache maintenace that was performed as part of the
target CPUs shutdown was not seen by the current CPU's cluster. And
so the cache may contain stale data for the target CPU.

This patch adds a cache maintenance operation (flush) for the
cache-line containing the target CPU data - this ensures that the
target CPU data is read from main memory.

Change-Id: If8cfd42639b03174f60669429b7f7a757027d0fb
Signed-off-by: default avatarDavid Cunado <david.cunado@arm.com>
      71341d23
  5. 25 Jul, 2017 2 commits
  7. 24 Jul, 2017 1 commit
  9. 20 Jul, 2017 4 commits
    • davidcunado-arm's avatar
      Merge pull request #1029 from islmit01/im/fix_includes · aa965e15
      davidcunado-arm authored 
      Fix order of includes
      aa965e15
    • Soby Mathew's avatar
      CSS: Prevent SCP_BL2/2U from overwriting BL1 RW data · 1ea63d77
      Soby Mathew authored 
      

On ARM CSS platforms, the SCP_BL2/2U image is loaded below
BL1 read-write data. This same memory is used to load BL31
later on. But sufficient checks were not done to ensure that the
SCP_BL2 would not overwrite BL1 rw data. This patch adds the
required CASSERT checks to prevent overwrite into BL1 or BL2
memory by load of SCP_BL2/2U. Also the size of BL31 is increased
and SCP_BL2/2U size is decreased to accomodate it within the
allocated region.

Change-Id: I23b28b5e1589e91150852a06452bd52b273216ee
Signed-off-by: default avatarSoby Mathew <soby.mathew@arm.com>
      1ea63d77
    • Soby Mathew's avatar
      CSS: Reorganize the SCP Image transfer functionality · 74d44a49
      Soby Mathew authored 
      

The SCP_BL2 is transferred to SCP during BL2 image load and authenticate
sequence. The Boot-Over-MHU (BOM) protocol is used as transport for this. After
the SCP boots using the transferred image, the AP CPU waits till the `READY`
message is received from SCP. This patch separates the API for transport of
image from the wait for `READY` message and also moves the related files to
the `css/drivers` folder. The previous API `scp_bootloader_transfer` is
renamed to `css_scp_boot_image_xfer` to reflect the css naming convention.
This reorganisation also allows easier switch to a different transport
(eg: Shared Data Structure based transfer) in future

Change-Id: I8a96f9c4616ffde6dbfdf7c18f6f6f8bfa40bbf0
Signed-off-by: default avatarSoby Mathew <soby.mathew@arm.com>
      74d44a49
    • Soby Mathew's avatar
      Resize the BL2 size limit for Juno · 6c401f31
      Soby Mathew authored 
      

Recent patches to reduce the memory footprint of BL images have
resulted in saving several pages of memory. This patch reduces
the BL2 size limit by 20KB for Juno when ARM_BOARD_OPTIMISE_MEM=1
so that more free space can be freed up for Trusted OS (BL32). Also
SCP_BL2/SCP_BL2U size is now restricted to 80K.

Change-Id: I1573d7a34e24d15e4abce8a14da40dbb5dc81e37
Signed-off-by: default avatarSoby Mathew <soby.mathew@arm.com>
      6c401f31
  11. 19 Jul, 2017 1 commit
  13. 17 Jul, 2017 1 commit
  15. 14 Jul, 2017 6 commits
  17. 12 Jul, 2017 8 commits
  19. 11 Jul, 2017 1 commit
  21. 10 Jul, 2017 4 commits
  23. 07 Jul, 2017 3 commits
  25. 06 Jul, 2017 3 commits