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[UPX] Add UPX board BomID detection through GPIOs 

UPX board has different memory configurations indicated by GPIO pins.
This patch added GPIO detections for these pins and set it as BomID.
It can be used to decide which SPD data to use later on.

Signed-off-by: Maurice Ma <maurice.ma@intel.com>
This commit is contained in:
Maurice Ma 2019-10-09 20:35:15 -07:00
parent 161271723b
commit eee6f98fc5
1 changed files with 47 additions and 2 deletions
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49
Platform/CoffeelakeBoardPkg/Library/Stage1BBoardInitLib/Stage1BBoardInitLib.c
View File

@ -49,8 +49,20 @@ CONST PLT_DEVICE mPlatformDevices[]= {
};
CONST UINT16 mRcompResistor[3] = { 121, 75, 100 };
CONST UINT16 mRcompTarget[5] = { 60, 26, 20, 20, 26 };
CONST UINT16 mRcompTarget[5] = { 60, 26, 20, 20, 26 };
CONST UINT32 mUpxGpioBomPad[] = {
GPIO_CNL_LP_GPP_C10,
GPIO_CNL_LP_GPP_C9,
GPIO_CNL_LP_GPP_C8,
GPIO_CNL_LP_GPP_A23,
GPIO_CNL_LP_GPP_A18,
GPIO_CNL_LP_GPP_C11
};
CONST GPIO_INIT_CONFIG mUpxBomGpioTemplate = {
GPIO_CNL_LP_GPP_C10, {GpioPadModeGpio, GpioHostOwnGpio, GpioDirIn, GpioOutDefault, GpioIntDis, GpioHostDeepReset, GpioTermNone}
};
/**
Set the debug print error level fron CFG data.
@ -241,10 +253,16 @@ PlatformIdInitialize (
IN VOID
)
{
UINT16 PlatformId;
UINT16 CpuDid;
UINT32 CpuFamilyModel;
UINT8 CpuStepping;
EFI_CPUID_REGISTER Cpuid;
EFI_STATUS Status;
UINT8 Idx;
UINT16 BomId;
UINT32 GpioData;
GPIO_INIT_CONFIG UpxBomGpioTemplate;
///
/// Read the CPUID & DID information
@ -255,7 +273,34 @@ PlatformIdInitialize (
CpuDid = PciRead16 (PCI_LIB_ADDRESS (SA_MC_BUS, SA_MC_DEV, SA_MC_FUN, R_SA_MC_DEVICE_ID));
DEBUG ((DEBUG_ERROR, "CpuFamilyModel 0x%X, CpuStepping 0x%X, CpuDid 0x%X\n", CpuFamilyModel, CpuStepping, CpuDid));
if (GetPlatformId () != 0) {
PlatformId = GetPlatformId();
if (PlatformId == PLATFORM_ID_UPXTREME) {
// For UPX, further detect the BOM ID
BomId = 0;
CopyMem (&UpxBomGpioTemplate, &mUpxBomGpioTemplate, sizeof(UpxBomGpioTemplate));
for (Idx = 0; Idx < ARRAY_SIZE(mUpxGpioBomPad); Idx++) {
UpxBomGpioTemplate.GpioPad = mUpxGpioBomPad[Idx];
GpioConfigurePads (1, &UpxBomGpioTemplate);
}
for (Idx = 0; Idx < ARRAY_SIZE(mUpxGpioBomPad); Idx++) {
Status = GpioGetInputValue (mUpxGpioBomPad[Idx], &GpioData);
DEBUG ((DEBUG_INFO, "Idx %d %r\n", Idx, Status));
if (EFI_ERROR(Status)) {
break;
}
BomId = (BomId << 1) + (GpioData & 1);
}
if (Idx == ARRAY_SIZE(mUpxGpioBomPad)) {
DEBUG ((DEBUG_INFO, "UPX BomID: 0x%02X\n", BomId));
SetPlatformBomId (BomId);
}
}
if (PlatformId != 0) {
// PlatformID is assigned already, don't detect again.
return;
}