diff options
| author | Andrei Warkentin <andrey.warkentin@gmail.com> | 2020-03-03 13:08:12 +0000 |
|---|---|---|
| committer | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2020-03-03 15:06:43 +0100 |
| commit | 874750ae77f77957a107ad41d716a23c6b697a31 (patch) | |
| tree | 599e30e0e76a7fa7bd5785970c7b2be05ecbb00f /Platform/RaspberryPi/RPi3 | |
| parent | 4fb91581cfdae28d4a5e81a8dc164ca11b6f0922 (diff) | |
Platform/RPi: Make 3GB/4GB a runtime (BIOS setup) choice
Currently some OSes (e.g FreeBSD) can make full use of the maximum
4 GB of RAM a Raspberry Pi 4 can offer, whereas others (e.g. Linux)
must be restricted to only the first 3 GB.
Previously this was a compile-time choice chosen by PcdAcpiBasicMode,
and now we make it user-selectable. The default is a 3 GB limit.
Signed-off-by: Pete Batard <pete@akeo.ie>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Diffstat (limited to 'Platform/RaspberryPi/RPi3')
| -rw-r--r-- | Platform/RaspberryPi/RPi3/RPi3.dsc | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/Platform/RaspberryPi/RPi3/RPi3.dsc b/Platform/RaspberryPi/RPi3/RPi3.dsc index df5b246a..48e1a32e 100644 --- a/Platform/RaspberryPi/RPi3/RPi3.dsc +++ b/Platform/RaspberryPi/RPi3/RPi3.dsc @@ -440,6 +440,12 @@ gRaspberryPiTokenSpaceGuid.PcdDisplayEnableSShot|L"DisplayEnableSShot"|gConfigDxeFormSetGuid|0x0|1
#
+ # Supporting > 3GB of memory.
+ #
+ gRaspberryPiTokenSpaceGuid.PcdRamMoreThan3GB|L"RamMoreThan3GB"|gConfigDxeFormSetGuid|0x0|0
+ gRaspberryPiTokenSpaceGuid.PcdRamLimitTo3GB|L"RamLimitTo3GB"|gConfigDxeFormSetGuid|0x0|0
+
+ #
# Common UEFI ones.
#
|