On 6 July 2015 at 20:26, Ard Biesheuvel <ard.biesheu...@linaro.org> wrote:
> This fixes an issue reported by Ryan Harkin where 32-bit ARM platforms without
> PSCI compliant firmware cannot be rebooted or powered off successfully at
> boot time.
>
> This is caused by a change which aimed to prevent system register accesses at
> runtime. These registers are not virtually remapped, so their availability is
> not guaranteed in that case. However, since the reboot/poweroff driver now
> uses PSCI unconditionally, these non-PSCI platforms break.
>
> This series addresses this regression by introducing a new system register
> access library which switches into a non-functional mode at runtime, and
> wiring
> it up for 32-bit VExpress platforms.
>
OK, I have tested these changes myself using the RTSM-A15 build under QEMU.
@Ryan: it would be helpful if you could verify that it fixes the
original problem as well.
Thanks,
Ard.
>
> Ard Biesheuvel (3):
> ArmPlatformPkg/ArmVExpressPkg: add ArmPlatformSysConfigLib for runtime
> ArmVExpressPkg: use ArmVExpressSysConfigRuntimeLib by default
> ArmVExpressPkg: use PSCI for system reset only on AARCH64 platforms
>
> ArmPlatformPkg/ArmVExpressPkg/ArmVExpress.dsc.inc
>
> | 3 ++-
>
> ArmPlatformPkg/ArmVExpressPkg/Library/{ArmVExpressSysConfigLib/ArmVExpressSysConfig.c
> => ArmVExpressSysConfigRuntimeLib/ArmVExpressSysConfigRuntimeLib.c} |
> 10 ++++++++++
>
> ArmPlatformPkg/ArmVExpressPkg/Library/{ArmVExpressSysConfigLib/ArmVExpressSysConfigLib.inf
> => ArmVExpressSysConfigRuntimeLib/ArmVExpressSysConfigRuntimeLib.inf} | 12
> +++++++-----
> 3 files changed, 19 insertions(+), 6 deletions(-)
> copy
> ArmPlatformPkg/ArmVExpressPkg/Library/{ArmVExpressSysConfigLib/ArmVExpressSysConfig.c
> => ArmVExpressSysConfigRuntimeLib/ArmVExpressSysConfigRuntimeLib.c} (93%)
> copy
> ArmPlatformPkg/ArmVExpressPkg/Library/{ArmVExpressSysConfigLib/ArmVExpressSysConfigLib.inf
> => ArmVExpressSysConfigRuntimeLib/ArmVExpressSysConfigRuntimeLib.inf} (65%)
>
> --
> 1.9.1
>
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