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  1. 25 Aug, 2017 3 commits
  3. 24 Aug, 2017 4 commits
  5. 23 Aug, 2017 5 commits
  7. 22 Aug, 2017 6 commits
  9. 21 Aug, 2017 1 commit
    • Julius Werner's avatar
      Fix x30 reporting for unhandled exceptions · 4d91838b
      Julius Werner authored 
      

Some error paths that lead to a crash dump will overwrite the value in
the x30 register by calling functions with the no_ret macro, which
resolves to a BL instruction. This is not very useful and not what the
reader would expect, since a crash dump should usually show all
registers in the state they were in when the exception happened. This
patch replaces the offending function calls with a B instruction to
preserve the value in x30.

Change-Id: I2a3636f2943f79bab0cd911f89d070012e697c2a
Signed-off-by: default avatarJulius Werner <jwerner@chromium.org>
      4d91838b
  11. 17 Aug, 2017 3 commits
  13. 16 Aug, 2017 2 commits
  15. 15 Aug, 2017 1 commit
    • Julius Werner's avatar
      Add new alignment parameter to func assembler macro · 64726e6d
      Julius Werner authored 
      

Assembler programmers are used to being able to define functions with a
specific aligment with a pattern like this:

    .align X
  myfunction:

However, this pattern is subtly broken when instead of a direct label
like 'myfunction:', you use the 'func myfunction' macro that's standard
in Trusted Firmware. Since the func macro declares a new section for the
function, the .align directive written above it actually applies to the
*previous* section in the assembly file, and the function it was
supposed to apply to is linked with default alignment.

An extreme case can be seen in Rockchip's plat_helpers.S which contains
this code:

  [...]
  endfunc plat_crash_console_putc

  .align 16
  func platform_cpu_warmboot
  [...]

This assembles into the following plat_helpers.o:

  Sections:
  Idx Name                             Size  [...]  Algn
   9 .text.plat_crash_console_putc 00010000  [...]  2**16
  10 .text.platform_cpu_warmboot   00000080  [...]  2**3

As can be seen, the *previous* function actually got the alignment
constraint, and it is also 64KB big even though it contains only two
instructions, because the .align directive at the end of its section
forces the assembler to insert a giant sled of NOPs. The function we
actually wanted to align has the default constraint. This code only
works at all because the linker just happens to put the two functions
right behind each other when linking the final image, and since the end
of plat_crash_console_putc is aligned the start of platform_cpu_warmboot
will also be. But it still wastes almost 64KB of image space
unnecessarily, and it will break under certain circumstances (e.g. if
the plat_crash_console_putc function becomes unused and its section gets
garbage-collected out).

There's no real way to fix this with the existing func macro. Code like

 func myfunc
 .align X

happens to do the right thing, but is still not really correct code
(because the function label is inserted before the .align directive, so
the assembler is technically allowed to insert padding at the beginning
of the function which would then get executed as instructions if the
function was called). Therefore, this patch adds a new parameter with a
default value to the func macro that allows overriding its alignment.

Also fix up all existing instances of this dangerous antipattern.

Change-Id: I5696a07e2fde896f21e0e83644c95b7b6ac79a10
Signed-off-by: default avatarJulius Werner <jwerner@chromium.org>
      64726e6d
  17. 14 Aug, 2017 5 commits
  19. 09 Aug, 2017 4 commits
    • Etienne Carriere's avatar
      bl32: add secure interrupt handling in AArch32 sp_min · 71816096
      Etienne Carriere authored 
      

Add support for a minimal secure interrupt service in sp_min for
the AArch32 implementation. Hard code that only FIQs are handled.

Introduce bolean build directive SP_MIN_WITH_SECURE_FIQ to enable
FIQ handling from SP_MIN.

Configure SCR[FIQ] and SCR[FW] from generic code for both cold and
warm boots to handle FIQ in secure state from monitor.

Since SP_MIN architecture, FIQ are always trapped when system executes
in non secure state. Hence discard relay of the secure/non-secure
state in the FIQ handler.

Change-Id: I1f7d1dc7b21f6f90011b7f3fcd921e455592f5e7
Signed-off-by: default avatarEtienne Carriere <etienne.carriere@st.com>
      71816096
    • Edison Ai's avatar
      Support paging function for OPTEE. · d59a6acc
      Edison Ai authored 
      

ARM TF need transfer information about pageable image load address
and memory limit to OPTEE. OPTEE will relocate the pageable image
to where it's needed.
The legacy OP-TEE images that do not include header information
are not affected.

Change-Id: Id057efbbc894de7c36b2209b391febea4729c455
Signed-off-by: default avatarEdison Ai <edison.ai@arm.com>
      d59a6acc
    • Summer Qin's avatar
      Add Trusted OS extra image parsing support for ARM standard platforms · 54661cd2
      Summer Qin authored 
      

Trusted OS may have extra images to be loaded. Load them one by one
and do the parsing. In this patch, ARM TF need to load up to 3 images
for optee os: header, pager and paged images. Header image is the info
about optee os and images. Pager image include pager code and data.
Paged image include the paging parts using virtual memory.

Change-Id: Ia3bcfa6d8a3ed7850deb5729654daca7b00be394
Signed-off-by: default avatarSummer Qin <summer.qin@arm.com>
      54661cd2
    • Summer Qin's avatar
      Support Trusted OS firmware extra images in TF tools · 71fb3964
      Summer Qin authored 
      

Since Trusted OS firmware may have extra images, need to
assign new uuid and image id for them.
The TBBR chain of trust has been extended to add support
for the new images within the existing Trusted OS firmware
content certificate.

Change-Id: I678dac7ba1137e85c5779b05e0c4331134c10e06
Signed-off-by: default avatarSummer Qin <summer.qin@arm.com>
      71fb3964
  21. 08 Aug, 2017 1 commit
  23. 04 Aug, 2017 1 commit
  25. 03 Aug, 2017 2 commits
  27. 02 Aug, 2017 2 commits
    • Douglas Raillard's avatar
      Fix BL2U entrypoint possible parameter corruption · 5c2c88b5
      Douglas Raillard authored 
      

Replace the use of r12 by r10 to save the value of a parameter of
bl2u_entrypoint to pass it to bl2u_early_platform_setup at the end of
the function. r10 is a callee saved register so it will not become
corrupted by C code, whereas r12 is the The Intra-Procedure-call scratch
register potentially used by veneers. See the ARM AAPCS document (ARM
IHI 0042F).

Change-Id: I4f37e54a6b550719edb40bb24cd8f498827e2749
Signed-off-by: default avatarDouglas Raillard <douglas.raillard@arm.com>
      5c2c88b5
    • Jeenu Viswambharan's avatar
      FVP: Support Base FVP RevC · 955242d8
      Jeenu Viswambharan authored 
      

Revision C of the Base FVP has the same memory map as earlier revisions,
but has the following differences:

  - Implements CCI550 instead of CCI400,
  - Has a single instantiation of SMMUv3,
  - CPU MPIDs are shifted left by one level, and has MT bit set in them.

The correct interconnect to program is chosen at run time based on the
FVP revision. Therefore, this patch implements FVP functions for
interconnect programming, rather than depending on ARM generic ones. The
macros used have been renamed to reflect this change.

Additionally, this patch initializes SMMUv3 as part of FVP early
platform setup.

New ARM config flags are introduced for feature queries at run time.

Change-Id: Ic7b7f080953a51fceaf62ce7daa6de0573801f09
Signed-off-by: default avatarJeenu Viswambharan <jeenu.viswambharan@arm.com>
      955242d8