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| author | Alexei Fedorov <Alexei.Fedorov@arm.com> | 2018-04-30 17:29:05 +0100 |
|---|---|---|
| committer | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2018-05-01 13:47:38 +0200 |
| commit | ada17bc975be79620c126ae9a856e45c866f5701 (patch) | |
| tree | 68b8a304cfda88cc2d5cc87aba11cb6d4aaf84a2 /Silicon/AMD/Styx/AcpiTables/Pptt.c | |
| parent | 0f980aeb3e4456668aa2c4092926a5303e242c0b (diff) | |
| download | edk2-platforms-ada17bc975be79620c126ae9a856e45c866f5701.tar.xz | |
Platform/ARM: Map Platform Boot Timeout PCD to global NV variable
Table 13 of UEFI Specification 2.7A describes Timeout global
variable as NV (non-volatile), however
gEfiMdePkgTokenSpaceGuid.PcdPlatformBootTimeOut
is defined in [PcdsFixedAtBuild.common] section of
Platform/ARM/VExpressPkg/ArmVExpress.dsc.inc.
This prevents the timeout value from being persistent across
resets and power cycles, see BdsEntry() code in
MdeModulePkg/Universal/BdsDxe/BdsEntry.c:
//
// Initialize L"Timeout" EFI global variable.
//
BootTimeOut = PcdGet16 (PcdPlatformBootTimeOut);
This patch fixes the above issue by mapping PcdPlatformBootTimeOut
to global NV variable "Timeout" as a PcdsDynamicHii PCD.
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Alexei Fedorov <Alexei.Fedorov@arm.com>
Reviewed-by: Evan Lloyd <Evan.Lloyd@arm.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Diffstat (limited to 'Silicon/AMD/Styx/AcpiTables/Pptt.c')
0 files changed, 0 insertions, 0 deletions