diff options
| author | Pete Batard <pete@akeo.ie> | 2020-03-10 23:31:11 +0000 |
|---|---|---|
| committer | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2020-03-25 19:47:24 +0100 |
| commit | c9f3f689baa68aa0185f05b40702c1e9d6c1009b (patch) | |
| tree | 3ecc3fe1c8097850ebfb4bec3659353f6367ac92 /Platform/RaspberryPi/RPi3 | |
| parent | 79c06cfaeaee7dcd2682702998d168f1ec68d811 (diff) | |
Platform/RPi/ConfigDxe: Improve CPU Frequency configuration
Improve the CPU frequency settings of the platforms by:
- Adding a "Default" option that sets the frequency to the
official default for each model/submodel.
- Adding a "Low" option, that sets the frequency to a fixed
PCD, custom to each platform.
- Using fixed PCDs to set the maximum and default values for
the custom frequency range, according to the overclocking
capabilities of the platform.
- Ensuring that the firmware defaults to using the platform's
default frequency, instead of a low arbitrary value.
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 | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/Platform/RaspberryPi/RPi3/RPi3.dsc b/Platform/RaspberryPi/RPi3/RPi3.dsc index 8266a92f..7fb9a41f 100644 --- a/Platform/RaspberryPi/RPi3/RPi3.dsc +++ b/Platform/RaspberryPi/RPi3/RPi3.dsc @@ -396,6 +396,13 @@ gEfiMdePkgTokenSpaceGuid.PcdUartDefaultBaudRate|115200
gEfiMdePkgTokenSpaceGuid.PcdUartDefaultReceiveFifoDepth|0
+ #
+ # Fixed CPU settings.
+ #
+ gRaspberryPiTokenSpaceGuid.PcdCpuLowSpeedMHz|600
+ gRaspberryPiTokenSpaceGuid.PcdCpuDefSpeedMHz|1200
+ gRaspberryPiTokenSpaceGuid.PcdCpuMaxSpeedMHz|1500
+
## Default Terminal Type
## 0-PCANSI, 1-VT100, 2-VT00+, 3-UTF8, 4-TTYTERM
gEfiMdePkgTokenSpaceGuid.PcdDefaultTerminalType|4
@@ -412,8 +419,8 @@ # Clock overrides.
#
- gRaspberryPiTokenSpaceGuid.PcdCpuClock|L"CpuClock"|gConfigDxeFormSetGuid|0x0|0
- gRaspberryPiTokenSpaceGuid.PcdCustomCpuClock|L"CustomCpuClock"|gConfigDxeFormSetGuid|0x0|600
+ gRaspberryPiTokenSpaceGuid.PcdCpuClock|L"CpuClock"|gConfigDxeFormSetGuid|0x0|1
+ gRaspberryPiTokenSpaceGuid.PcdCustomCpuClock|L"CustomCpuClock"|gConfigDxeFormSetGuid|0x0|gRaspberryPiTokenSpaceGuid.PcdCpuDefSpeedMHz
#
# SD-related.
|