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  1. 16 Oct, 2018 1 commit
  3. 15 Oct, 2018 1 commit
  5. 11 Oct, 2018 3 commits
    • Sathees Balya's avatar
      plat/arm: Fix misra warnings in platform code · 89509904
      Sathees Balya authored 
      

Change-Id: Ica944acc474a099219d50b041cfaeabd4f3d362f
Signed-off-by: default avatarSathees Balya <sathees.balya@arm.com>
      89509904
    • Sandrine Bailleux's avatar
      Introduce object pool allocator · 9cc4651c
      Sandrine Bailleux authored 
      

The object pool allocator provides a simplistic interface to manage
allocation in a fixed-size static array. The caller creates a static
"object pool" out of such an array and may then call pool_alloc() to
get the next available object within the pool. There is also a variant
to get multiple consecutive objects: pool_alloc_n().

Note that this interface does not provide any way to free the objects
afterwards. This is by design and it is not a limitation. We do not
want to introduce complexity induced by memory freeing, such as
use-after-free bugs, memory fragmentation and so on.

Change-Id: Iefc2e153767851fbde5841a295f92ae48adda71f
Signed-off-by: default avatarSandrine Bailleux <sandrine.bailleux@arm.com>
      9cc4651c
    • Antonio Nino Diaz's avatar
      plat/arm: Remove file arm_board_def.h · 0f58d4f2
      Antonio Nino Diaz authored 
      

This file is shared between FVP and all CSS platforms. While it may be
true that some definitions can be common, it doesn't make sense
conceptually. For example, the stack size depends on the platform and so
does the SRAM size.

After removing them, there are not enough common definitions to justify
having this header, so the other definitions have been moved to the
platform_def.h of FVP, board_css_def.h and arm_def.h.

Change-Id: Ifbf4b017227f9dfefa1a430f67d7d6baae6a4ba1
Signed-off-by: default avatarAntonio Nino Diaz <antonio.ninodiaz@arm.com>
      0f58d4f2
  7. 10 Oct, 2018 2 commits
  9. 09 Oct, 2018 1 commit
  11. 07 Oct, 2018 1 commit
  13. 04 Oct, 2018 1 commit
  15. 03 Oct, 2018 2 commits
    • Daniel Boulby's avatar
      FVP: Reclaim init code for the stack · cb4adb0d
      Daniel Boulby authored 
      

Map the initialization code for BL31 to overlap with the memory
required for the secondary cores stack. Once BL31 has been
initialized the memory can be remapped to RW data so that it can
be used for secondary cores stacks. By moving code from .text to
.text.init the size of the BL31 image is decreased by a page.

Split arm_common.ld.S into two linker scripts, one for tzc_dram
(arm_tzc_dram.ld.S) and one for reclaiming initialization code
(arm_reclaim_init.ld.S) so that platforms can chose which memory
regions they wish to include.

Change-Id: I648e88f3eda1aa71765744cf34343ecda9320b32
Signed-off-by: default avatarDaniel Boulby <daniel.boulby@arm.com>
      cb4adb0d
    • Daniel Boulby's avatar
      Introduce RECLAIM_INIT_CODE build flag · 1dcc28cf
      Daniel Boulby authored 
      

This patch introduces a build flag "RECLAIM_INIT_CODE" to mark boot time
code which allows platforms to place this memory in an appropriate
section to be reclaimed later. This features is primarily targeted for
BL31. Appropriate documentation updates are also done.

Change-Id: If0ca062851614805d769c332c771083d46599194
Signed-off-by: default avatarDaniel Boulby <daniel.boulby@arm.com>
      1dcc28cf
  17. 02 Oct, 2018 1 commit
    • Antonio Nino Diaz's avatar
      plat/arm: Remove option ARM_BOARD_OPTIMISE_MEM · c0740e4f
      Antonio Nino Diaz authored 
      

This option makes it hard to optimize the memory definitions of all Arm
platforms because any change in the common defines must work in all of
them. The best thing to do is to remove it and move the definition to
each platform's header.

FVP, SGI and SGM were using the definitions in board_arm_def.h. The
definitions have been copied to each platform's platform_def.h. Juno
was already using the ones in platform_def.h, so there have been no
changes.

Change-Id: I9aecd11bbc72a3d0d7aad1ef9934d8df21dcfaf2
Signed-off-by: default avatarAntonio Nino Diaz <antonio.ninodiaz@arm.com>
      c0740e4f
  19. 28 Sep, 2018 14 commits
  21. 25 Sep, 2018 1 commit
  23. 21 Sep, 2018 1 commit
  25. 20 Sep, 2018 1 commit
  27. 07 Sep, 2018 2 commits
    • Sathees Balya's avatar
      juno: Revert FWU update detect mechanism · 4da6f6cd
      Sathees Balya authored 
      The patch 7b56928a

 unified the FWU mechanism on FVP and Juno
platforms due to issues with MCC firmware not preserving the
NVFLAGS. With MCCv150 firmware, this issue is resolved. Also
writing to the NOR flash while executing from the same flash
in Bypass mode had some stability issues. Hence, since the
MCC firmware issue is resolved, this patch reverts to the
NVFLAGS mechanism to detect FWU. Also, with the introduction
of SDS (Shared Data Structure) by the SCP, the reset syndrome
needs to queried from the appropriate SDS field.

Change-Id: If9c08f1afaaa4fcf197f3186887068103855f554
Signed-off-by: default avatarSathees Balya <sathees.balya@arm.com>
Signed-off-by: default avatarSoby Mathew <Soby.Mathew@arm.com>
      4da6f6cd
    • John Tsichritzis's avatar
      Readjust BL2 size after sharing Mbed TLS heap · 2dac2c0b
      John Tsichritzis authored 
      

After introducing the Mbed TLS shared heap optimisation, reducing BL2
size by 3 pages didn't leave enough space for growth. We give 1 page
back to maximum BL2 size.

Change-Id: I4f05432f00b923693160f69a4e4ec310a37a2b16
Signed-off-by: default avatarJohn Tsichritzis <john.tsichritzis@arm.com>
      2dac2c0b
  29. 05 Sep, 2018 4 commits
    • Icenowy Zheng's avatar
      drivers: mentor: extract MI2CV driver from Marvell driver · 7e4d5620
      Icenowy Zheng authored 
      

The Marvell A8K SoCs use the MI2CV IP core from Mentor Graphics, which
is also used by Allwinner.

As Mentor Graphics allows a lot of customization, the MI2CV in the two
SoC families are not compatible, and driver modifications are needed.

Extract the common code to a MI2CV driver.
Signed-off-by: default avatarIcenowy Zheng <icenowy@aosc.io>
      7e4d5620
    • Jeenu Viswambharan's avatar
      ARMv7: Alias dmbld() to dmb() · e43422b7
      Jeenu Viswambharan authored 
      

'dmb ld' is not a recognized instruction for ARMv7. Since generic code
may use 'dmb ld', alias it to 'dmb' when building for ARMv7.

Change-Id: I502f360cb6412897ca9580b725d9f79469a7612e
Signed-off-by: default avatarJeenu Viswambharan <jeenu.viswambharan@arm.com>
      e43422b7
    • Varun Wadekar's avatar
      cpus: denver: Implement static workaround for CVE-2018-3639 · 6cf8d65f
      Varun Wadekar authored 
      

For Denver CPUs, this approach enables the mitigation during EL3
initialization, following every PE reset. No mechanism is provided to
disable the mitigation at runtime.

This approach permanently mitigates the EL3 software stack only. Other
software components are responsible to enable it for their exception
levels.

TF-A implements this approach for the Denver CPUs with DENVER_MIDR_PN3
and earlier:

*   By setting bit 11 (Disable speculative store buffering) of
    `ACTLR_EL3`

*   By setting bit 9 (Disable speculative memory disambiguation) of
    `ACTLR_EL3`

TF-A implements this approach for the Denver CPUs with DENVER_MIDR_PN4
and later:

*   By setting bit 18 (Disable speculative store buffering) of
    `ACTLR_EL3`

*   By setting bit 17 (Disable speculative memory disambiguation) of
    `ACTLR_EL3`

Change-Id: If1de96605ce3f7b0aff5fab2c828e5aecb687555
Signed-off-by: default avatarVarun Wadekar <vwadekar@nvidia.com>
      6cf8d65f
    • Varun Wadekar's avatar
      cpus: denver: reset power state to 'C1' on boot · cf3ed0dc
      Varun Wadekar authored 
      

Denver CPUs expect the power state field to be reset to 'C1'
during boot. This patch updates the reset handler to reset the
ACTLR_.PMSTATE field to 'C1' state during CPU boot.

Change-Id: I7cb629627a4dd1a30ec5cbb3a5e90055244fe30c
Signed-off-by: default avatarVarun Wadekar <vwadekar@nvidia.com>
      cf3ed0dc
  31. 04 Sep, 2018 4 commits
    • Jun Nie's avatar
      drivers: emmc: dw_mmc: Add response flag into response ID definition · 2a82a9c9
      Jun Nie authored 
      

Add response flag into ID definition so that driver does not
need to handle it again.
Signed-off-by: default avatarJun Nie <jun.nie@linaro.org>
Signed-off-by: default avatarBryan O'Donoghue <bryan.odonoghue@linaro.org>
      2a82a9c9
    • John Tsichritzis's avatar
      Reduce BL2 size for FVP · 37574c56
      John Tsichritzis authored 
      

This patch reduces BL2 size by 12kB. Thanks to the shared Mbed TLS heap
between BL1 and BL2, BL2 now requires less memory since it doesn't need
to allocate a heap anymore.

Change-Id: I58a15f8c424273650c9f55112abe88105b6cdbae
Signed-off-by: default avatarJohn Tsichritzis <john.tsichritzis@arm.com>
      37574c56
    • John Tsichritzis's avatar
      Support shared Mbed TLS heap for FVP · ba597da7
      John Tsichritzis authored 
      

This patch introduces the shared Mbed TLS heap optimisation for Arm
platforms. The objective is the Mbed TLS heap to be shared between BL1
and BL2 so as to not allocate the heap memory twice. To achieve that,
the patch introduces all the necessary helpers for implementing this
optimisation. It also applies it for FVP.

Change-Id: I6d85eaa1361517b7490956b2ac50f5fa0d0bb008
Signed-off-by: default avatarJohn Tsichritzis <john.tsichritzis@arm.com>
      ba597da7
    • John Tsichritzis's avatar
      Prepare Mbed TLS drivers for shared heap · 6d01a463
      John Tsichritzis authored 
      

The Mbed TLS drivers, in order to work, need a heap for internal usage.
This heap, instead of being directly referenced by the drivers, now it
is being accessed indirectly through a pointer. Also, the heap, instead
of being part of the drivers, now it is being received through the
plat_get_mbedtls_heap() function. This function requests a heap from the
current BL image which utilises the Mbed TLS drivers.

Those changes create the opportunity for the Mbed TLS heap to be shared
among different images, thus saving memory. A default heap
implementation is provided but it can be overridden by a platform
specific, optimised implemenetation.

Change-Id: I286a1f10097a9cdcbcd312201eea576c18d157fa
Signed-off-by: default avatarJohn Tsichritzis <john.tsichritzis@arm.com>
      6d01a463