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Merge pull request #11 from system76/skip-console-vars

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MdeModulePkg/EmuRuntimeDxe: skip console NVRAM variables
This commit is contained in:
Jeremy Soller
2020-06-22 15:49:31 -06:00
committed by GitHub
parent e3e4f6ddd5 e10ad1c874
commit 0e66ac75c3
1 changed files with 22 additions and 17 deletions
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39
MdeModulePkg/Universal/Variable/EmuRuntimeDxe/EmuVariable.c
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@ -1100,13 +1100,14 @@ UpdateVariable (
Store:
// If the store is initialized
// And we are storing or deleting a non volatile variable
// And variable name doesn't start with 'Con'
// Send the new data to SMMSTORE
if (storeInitialized && (
(Attributes & EFI_VARIABLE_NON_VOLATILE) != 0 || (
Delete &&
(Variable->CurrPtr->Attributes & EFI_VARIABLE_NON_VOLATILE) != 0
)
)) {
)) && (StrnCmp(L"Con", VariableName, StrLen(L"Con")))
) {
/* TODO: add hook for logging nv changes here */
@ -1978,23 +1979,27 @@ VariableCommonInitialize (
EFI_GUID *guid = (EFI_GUID *)(buf + i + 8);
VOID *data = (VOID *)(buf + i + 8 + keysz);
DEBUG ((DEBUG_WARN, "Fetching variable: %s\n", varname));
DEBUG ((DEBUG_WARN, "buf: %p, buf+i: %p, guid: %p, varname: %p, data: %p\n", buf, buf + i, guid, varname, data));
VARIABLE_POINTER_TRACK Variable;
FindVariable (varname, guid, &Variable, (VARIABLE_GLOBAL *)mVariableModuleGlobal);
// don't update console variables
if (StrnCmp(L"Con", varname, StrLen(L"Con"))) {
DEBUG ((DEBUG_WARN, "Fetching variable: %s\n", varname));
DEBUG ((DEBUG_WARN, "buf: %p, buf+i: %p, guid: %p, varname: %p, data: %p\n", buf, buf + i, guid, varname, data));
VARIABLE_POINTER_TRACK Variable;
FindVariable (varname, guid, &Variable, (VARIABLE_GLOBAL *)mVariableModuleGlobal);
DEBUG ((DEBUG_WARN, "Updating variable: %s\n", varname));
UpdateVariable (
varname,
guid,
data,
valsz,
// all of these variables are nv
EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
&Variable
);
DEBUG ((DEBUG_WARN, "Updating variable: %s\n", varname));
UpdateVariable (
varname,
guid,
data,
valsz,
// all of these variables are nv
EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
&Variable
);
} else {
DEBUG ((DEBUG_WARN, "Skipping console variable: %s\n", varname));
}
}
DEBUG ((DEBUG_WARN, "Added variable: 0x%x, val size: %x\n", keysz, valsz));
// no UEFI variable since it's at most the GUID part, so skip
i += 8 + keysz + valsz + 1;
i = (i + 3) & ~3;