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MdeModulePkg: Update the device path info for the storage when former drivers not provide it. 

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Eric Dong <eric.dong@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16499 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Eric Dong 2014-12-11 08:03:19 +00:00 committed by ydong10
parent 5789fe3587
commit 300c1f0d35
1 changed files with 47 additions and 0 deletions
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47
MdeModulePkg/Universal/SetupBrowserDxe/IfrParse.c
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@ -451,6 +451,42 @@ IntializeBrowserStorage (
}
}
/**
Check whether exist device path info in the ConfigHdr string.
@param String UEFI configuration string
@retval TRUE Device Path exist.
@retval FALSE Not exist device path info.
**/
BOOLEAN
IsDevicePathExist (
IN EFI_STRING String
)
{
UINTN Length;
EFI_STRING PathHdr;
for (; (*String != 0 && StrnCmp (String, L"PATH=", StrLen (L"PATH=")) != 0); String++);
if (*String == 0) {
return FALSE;
}
String += StrLen (L"PATH=");
if (*String == 0) {
return FALSE;
}
PathHdr = String;
for (Length = 0; *String != 0 && *String != L'&'; String++, Length++);
if (((Length + 1) / 2) < sizeof (EFI_DEVICE_PATH_PROTOCOL)) {
return FALSE;
}
return TRUE;
}
/**
Allocate a FORMSET_STORAGE data structure and insert to FormSet Storage List.
@ -528,6 +564,17 @@ CreateStorage (
InitializeConfigHdr (FormSet, BrowserStorage);
BrowserStorage->Initialized = FALSE;
} else {
if ((StorageType == EFI_HII_VARSTORE_EFI_VARIABLE_BUFFER) &&
(FormSet->DriverHandle != NULL) &&
(!IsDevicePathExist (BrowserStorage->ConfigHdr))) {
//
// If this storage not has device path info but new formset has,
// update the device path info.
//
FreePool (BrowserStorage->ConfigHdr);
InitializeConfigHdr (FormSet, BrowserStorage);
}
}
Storage->BrowserStorage = BrowserStorage;