A large reason for using the SPI flash on this platform is that
it can be updated without OS interference at rutime. In order for
that to happen we need both the SPI, as well as the GPIO
which is used to change the pinmux from the PWM device to SPI added
to the UEFI memory map as being used by the runtime service.
Signed-off-by: Jeremy Linton <jeremy.lin...@arm.com>
---
.../RaspberryPi/Drivers/ConfigDxe/ConfigDxe.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/Platform/RaspberryPi/Drivers/ConfigDxe/ConfigDxe.c
b/Platform/RaspberryPi/Drivers/ConfigDxe/ConfigDxe.c
index 151f3cd801..377ef438ff 100644
--- a/Platform/RaspberryPi/Drivers/ConfigDxe/ConfigDxe.c
+++ b/Platform/RaspberryPi/Drivers/ConfigDxe/ConfigDxe.c
@@ -504,6 +504,22 @@ ApplyVariables (
DEBUG ((DEBUG_INFO, "Current CPU speed is %u MHz\n", Rate / FREQ_1_MHZ));
}
+ if (mModelFamily == 4) {
+ Status = gDS->AddMemorySpace (EfiGcdMemoryTypeMemoryMappedIo,
BCM2836_SPI0_BASE_ADDRESS,
+ SIZE_4KB, EFI_MEMORY_UC |
EFI_MEMORY_RUNTIME);
+ ASSERT_EFI_ERROR (Status);
+ Status = gDS->SetMemorySpaceAttributes (BCM2836_SPI0_BASE_ADDRESS,
+ SIZE_4KB,
EFI_MEMORY_UC|EFI_MEMORY_RUNTIME);
+
+ Status = gDS->AddMemorySpace (EfiGcdMemoryTypeMemoryMappedIo,
GPIO_BASE_ADDRESS,
+ SIZE_4KB, EFI_MEMORY_UC |
EFI_MEMORY_RUNTIME);
+ ASSERT_EFI_ERROR (Status);
+ Status = gDS->SetMemorySpaceAttributes (GPIO_BASE_ADDRESS,
+ SIZE_4KB,
EFI_MEMORY_UC|EFI_MEMORY_RUNTIME);
+
+ ASSERT_EFI_ERROR (Status);
+ }
+
if (mModelFamily >= 4 && PcdGet32 (PcdRamMoreThan3GB) != 0 &&
PcdGet32 (PcdRamLimitTo3GB) == 0) {
UINT64 SystemMemorySize;
--
2.43.0
-=-=-=-=-=-=-=-=-=-=-=-
Groups.io Links: You receive all messages sent to this group.
View/Reply Online (#113554): https://edk2.groups.io/g/devel/message/113554
Mute This Topic: https://groups.io/mt/103653091/21656
Group Owner: devel+ow...@edk2.groups.io
Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com]
-=-=-=-=-=-=-=-=-=-=-=-
