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  1. 21 Sep, 2018 1 commit
    • Daniel Boulby's avatar
      Ensure the flow through switch statements is clear · a08a2014
      Daniel Boulby authored 
      

Ensure case clauses:
*   Terminate with an unconditional break, return or goto statement.
*   Use conditional break, return or goto statements as long as the end
    of the case clause is unreachable; such case clauses must terminate
    with assert(0) /* Unreachable */ or an unconditional  __dead2 function
    call
*   Only fallthough when doing otherwise would result in less
    readable/maintainable code; such case clauses must terminate with a
    /* Fallthrough */ comment to make it clear this is the case and
    indicate that a fallthrough is intended.

This reduces the chance of bugs appearing due to unintended flow through a
switch statement

Change-Id: I70fc2d1f4fd679042397dec12fd1982976646168
Signed-off-by: default avatarDaniel Boulby <daniel.boulby@arm.com>
      a08a2014
  3. 30 Aug, 2018 1 commit
  5. 26 Mar, 2018 2 commits
  7. 13 Nov, 2017 1 commit
    • Jeenu Viswambharan's avatar
      GIC: Introduce API to get interrupt ID · 4ee8d0be
      Jeenu Viswambharan authored 
      

Acknowledging interrupt shall return a raw value from the interrupt
controller in which the actual interrupt ID may be encoded. Add a
platform API to extract the actual interrupt ID from the raw value
obtained from interrupt controller.

Document the new function. Also clarify the semantics of interrupt
acknowledge.

Change-Id: I818dad7be47661658b16f9807877d259eb127405
Signed-off-by: default avatarJeenu Viswambharan <jeenu.viswambharan@arm.com>
      4ee8d0be
  9. 16 Oct, 2017 10 commits
  11. 03 May, 2017 1 commit
  13. 23 Jan, 2017 1 commit
    • Masahiro Yamada's avatar
      Use #ifdef for IMAGE_BL* instead of #if · 3d8256b2
      Masahiro Yamada authored 
      

One nasty part of ATF is some of boolean macros are always defined
as 1 or 0, and the rest of them are only defined under certain
conditions.

For the former group, "#if FOO" or "#if !FOO" must be used because
"#ifdef FOO" is always true.  (Options passed by $(call add_define,)
are the cases.)

For the latter, "#ifdef FOO" or "#ifndef FOO" should be used because
checking the value of an undefined macro is strange.

Here, IMAGE_BL* is handled by make_helpers/build_macro.mk like
follows:

  $(eval IMAGE := IMAGE_BL$(call uppercase,$(3)))

  $(OBJ): $(2)
          @echo "  CC      $$<"
          $$(Q)$$(CC) $$(TF_CFLAGS) $$(CFLAGS) -D$(IMAGE) -c $$< -o $$@

This means, IMAGE_BL* is defined when building the corresponding
image, but *undefined* for the other images.

So, IMAGE_BL* belongs to the latter group where we should use #ifdef
or #ifndef.
Signed-off-by: default avatarMasahiro Yamada <yamada.masahiro@socionext.com>
      3d8256b2
  15. 10 Aug, 2016 1 commit
    • Soby Mathew's avatar
      AArch32: Add essential ARM platform and FVP support · 877cf3ff
      Soby Mathew authored 
      This patch adds AArch32 support for FVP and implements common platform APIs
like `plat_get_my_stack`, `plat_set_my_stack`, `plat_my_core_cos` for AArch32.
Only Multi Processor(MP) implementations of these functions are considered in
this patch. The ARM Standard platform layer helpers are implemented for
AArch32 and the common makefiles are modified to cater for both AArch64 and
AArch32 builds. Compatibility with the deprecated platform API is not
supported for AArch32.

Change-Id: Iad228400613eec91abf731b49e21a15bcf2833ea
      877cf3ff
  17. 09 Dec, 2015 1 commit
    • Soby Mathew's avatar
      Prepare platforms to use refactored ARM GIC drivers · f14d1886
      Soby Mathew authored 
      This patch adds platform helpers for the new GICv2 and GICv3 drivers in
plat_gicv2.c and plat_gicv3.c. The platforms can include the appropriate
file in their build according to the GIC driver to be used. The existing
plat_gic.c is only meant for the legacy GIC driver.

In the case of ARM platforms, the major changes are as follows:

1. The crash reporting helper macro `arm_print_gic_regs` that prints the GIC CPU
   interface register values has been modified to detect the type of CPU
   interface being used (System register or memory mappped interface) before
   using the right interface to print the registers.

2. The power management helper function that is called after a core is powered
   up has been further refactored. This is to highlight that the per-cpu
   distributor interface should be initialised only when the core was originally
   powered down using the CPU_OFF PSCI API and not when the CPU_SUSPEND PSCI API
   was used.

3. In the case of CSS platforms, the system power domain restore helper
   `arm_system_pwr_domain_resume()` is now only invoked in the `suspend_finish`
   handler as the system power domain is always expected to be initialized when
   the `on_finish` handler is invoked.

Change-Id: I7fc27d61fc6c2a60cea2436b676c5737d0257df6
      f14d1886