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Add SetDeviceAddr() for device table update

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Currently SBL library has GetDeviceAddr() to get the device
address based on device type and instance. This patch adds
SetDeviceAddr() to update a given device type and address so
that platform could update the device table dynamically.

Signed-off-by: Guo Dong <guo.dong@intel.com>
This commit is contained in:
Guo Dong
2020-09-17 22:16:54 -07:00
committed by Maurice Ma
parent e6935143a4
commit d9feb94de3
2 changed files with 68 additions and 0 deletions
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23
BootloaderCommonPkg/Include/Library/BootloaderCommonLib.h
View File

@@ -559,6 +559,29 @@ GetDeviceAddr (
IN UINT8 DeviceInstance
);
/**
Set device address in device table
If the device is PCI device, the device address format is 0x00BBDDFF, where
BB, DD and FF are PCI bus, device and function number.
If the device is MMIO device, the device address format is 0xMMxxxxxx, where
MM should be non-zero value, xxxxxx could be any value.
@param[in] DeviceType The device type, refer OS_BOOT_MEDIUM_TYPE.
@param[in] DeviceInstance The device instance number starting from 0.
@param[in] DeviceAddr The device address.
@retval EFI_SUCCESS If the given device type and instance are found and set.
EFI_NOT_FOUND The given device type and instance are not found.
**/
EFI_STATUS
EFIAPI
SetDeviceAddr (
IN UINT8 DeviceType,
IN UINT8 DeviceInstance,
IN UINT32 DeviceAddr
);
/**
This function retrieves container list pointer.

45
BootloaderCommonPkg/Library/BootloaderCommonLib/BootloaderCommonLib.c
View File

@@ -677,6 +677,51 @@ GetDeviceAddr (
return DeviceBase;
}
/**
Set device address in the device table
If the device is PCI device, the device address format is 0x00BBDDFF, where
BB, DD and FF are PCI bus, device and function number.
If the device is MMIO device, the device address format is 0xMMxxxxxx, where
MM should be non-zero value, xxxxxx could be any value.
@param[in] DeviceType The device type, refer OS_BOOT_MEDIUM_TYPE.
@param[in] DeviceInstance The device instance number starting from 0.
@param[in] DeviceAddr The device address.
@retval EFI_SUCCESS If the given device type and instance are found and set.
EFI_NOT_FOUND The given device type and instance are not found.
**/
EFI_STATUS
EFIAPI
SetDeviceAddr (
IN UINT8 DeviceType,
IN UINT8 DeviceInstance,
IN UINT32 DeviceAddr
)
{
PLT_DEVICE_TABLE *DeviceTable;
PLT_DEVICE *Device;
UINT32 Index;
Device = NULL;
DeviceTable = (PLT_DEVICE_TABLE *)GetDeviceTable();
for (Index = 0; Index < DeviceTable->DeviceNumber; Index++) {
Device = &DeviceTable->Device[Index];
if ((Device->Type == DeviceType) && (Device->Instance == DeviceInstance)){
if (Device->Dev.DevAddr != DeviceAddr) {
DEBUG ((DEBUG_INFO, "Update device table: type (0x%x) instance (%x) from 0x%x to 0x%x\n", \
DeviceType, DeviceInstance, Device->Dev.DevAddr, DeviceAddr));
Device->Dev.DevAddr = DeviceAddr;
}
return EFI_SUCCESS;
}
}
return EFI_NOT_FOUND;
}
/**
Match a given hash with the ones in hash store.