The firmware revision that is queried through the VideoCore mailbox
is really the 32-bit timestamp of when the VideoCore firmware was
generated.
To make this more palatable for human reporting, convert it to a
YY.MM firmware revision, so that end-users can get an approximative
idea of how old their VideoCore firmware is.
Signed-off-by: Pete Batard <p...@akeo.ie>
---
Platform/RaspberryPi/Drivers/PlatformSmbiosDxe/PlatformSmbiosDxe.c | 20
++++++++++++--------
Platform/RaspberryPi/Drivers/PlatformSmbiosDxe/PlatformSmbiosDxe.inf | 2 ++
2 files changed, 14 insertions(+), 8 deletions(-)
diff --git a/Platform/RaspberryPi/Drivers/PlatformSmbiosDxe/PlatformSmbiosDxe.c
b/Platform/RaspberryPi/Drivers/PlatformSmbiosDxe/PlatformSmbiosDxe.c
index 6aa68a0925ba..06c73d691f9d 100644
--- a/Platform/RaspberryPi/Drivers/PlatformSmbiosDxe/PlatformSmbiosDxe.c
+++ b/Platform/RaspberryPi/Drivers/PlatformSmbiosDxe/PlatformSmbiosDxe.c
@@ -38,6 +38,7 @@
#include <Library/PcdLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/MemoryAllocationLib.h>
+#include <Library/TimeBaseLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/PrintLib.h>
@@ -597,23 +598,26 @@ BIOSInfoUpdateSmbiosType0 (
VOID
)
{
- UINT32 FirmwareRevision = 0;
+ UINT32 EpochSeconds = 0;
EFI_STATUS Status = EFI_SUCCESS;
+ EFI_TIME Time;
INTN i;
INTN State = 0;
INTN Value[2];
// Populate the Firmware major and minor.
- Status = mFwProtocol->GetFirmwareRevision (&FirmwareRevision);
+ Status = mFwProtocol->GetFirmwareRevision (&EpochSeconds);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "Failed to get firmware revision: %r\n", Status));
} else {
- // This expects Broadcom / The Raspberry Pi Foundation to switch to
- // less nonsensical VideoCore firmware revisions in the future...
- mBIOSInfoType0.EmbeddedControllerFirmwareMajorRelease =
- (UINT8)((FirmwareRevision >> 16) & 0xFF);
- mBIOSInfoType0.EmbeddedControllerFirmwareMinorRelease =
- (UINT8)(FirmwareRevision & 0xFF);
+ // The firmware revision is really an epoch time which we convert to a
+ // YY.MM major.minor. This is good enough for our purpose, where this
+ // revision is merely provided as a loose indicator of when the
+ // VideoCore firmware was generated.
+ EpochToEfiTime (EpochSeconds, &Time);
+ ASSERT (Time.Year >= 2000 && Time.Year <= 2255);
+ mBIOSInfoType0.EmbeddedControllerFirmwareMajorRelease = (UINT8)(Time.Year
- 2000);
+ mBIOSInfoType0.EmbeddedControllerFirmwareMinorRelease = Time.Month;
}
// mBiosVendor and mBiosVersion, which are referenced in
mBIOSInfoType0Strings,
diff --git
a/Platform/RaspberryPi/Drivers/PlatformSmbiosDxe/PlatformSmbiosDxe.inf
b/Platform/RaspberryPi/Drivers/PlatformSmbiosDxe/PlatformSmbiosDxe.inf
index 0bd72c3ba6a1..9554c2e998f1 100644
--- a/Platform/RaspberryPi/Drivers/PlatformSmbiosDxe/PlatformSmbiosDxe.inf
+++ b/Platform/RaspberryPi/Drivers/PlatformSmbiosDxe/PlatformSmbiosDxe.inf
@@ -27,6 +27,7 @@ [Packages]
ArmPlatformPkg/ArmPlatformPkg.dec
ArmPkg/ArmPkg.dec
Platform/RaspberryPi/RaspberryPi.dec
+ EmbeddedPkg/EmbeddedPkg.dec
[LibraryClasses]
UefiBootServicesTableLib
@@ -37,6 +38,7 @@ [LibraryClasses]
UefiDriverEntryPoint
DebugLib
PrintLib
+ TimeBaseLib
[Protocols]
gEfiSmbiosProtocolGuid # PROTOCOL SOMETIMES_CONSUMED
--
2.21.0.windows.1
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