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| author | Ronald Cron <Ronald.Cron@arm.com> | 2015-05-05 15:24:17 +0000 |
|---|---|---|
| committer | oliviermartin <oliviermartin@Edk2> | 2015-05-05 15:24:17 +0000 |
| commit | bbd6a1617fe08493ef4ac5a952bb9613c1164157 (patch) | |
| tree | ad033be7ae191f14dd86898d14b7bf20df814c53 /EmbeddedPkg | |
| parent | 4589ffaa85551193ef541fc31dc436281005f0d5 (diff) | |
| download | edk2-bbd6a1617fe08493ef4ac5a952bb9613c1164157.tar.gz edk2-bbd6a1617fe08493ef4ac5a952bb9613c1164157.tar.bz2 edk2-bbd6a1617fe08493ef4ac5a952bb9613c1164157.zip | |
EmbeddedPkg/FdtPlatformDxe: 'setfdt' command, add deletion of the UEFI variable "Fdt"
Add deletion of the "Fdt" UEFI variable used to specify
a development FDT device path when the 'setfdt' command
is called with an empty string as file path.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ronald Cron <Ronald.Cron@arm.com>
Reviewed-by: Olivier Martin <olivier.martin@arm.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17300 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'EmbeddedPkg')
| -rw-r--r-- | EmbeddedPkg/Drivers/FdtPlatformDxe/FdtPlatform.c | 107 |
1 files changed, 60 insertions, 47 deletions
diff --git a/EmbeddedPkg/Drivers/FdtPlatformDxe/FdtPlatform.c b/EmbeddedPkg/Drivers/FdtPlatformDxe/FdtPlatform.c index b5ae8c0bb5..eb4f554621 100644 --- a/EmbeddedPkg/Drivers/FdtPlatformDxe/FdtPlatform.c +++ b/EmbeddedPkg/Drivers/FdtPlatformDxe/FdtPlatform.c @@ -747,52 +747,55 @@ UpdateFdtTextDevicePath ( SHELL_STATUS ShellStatus;
ASSERT (FilePath != NULL);
+ DevicePath = NULL;
TextDevicePath = NULL;
FdtVariableValue = NULL;
- DevicePath = Shell->GetDevicePathFromFilePath (FilePath);
- if (DevicePath != NULL) {
- Status = gBS->LocateProtocol (
- &gEfiDevicePathToTextProtocolGuid,
- NULL,
- (VOID **)&EfiDevicePathToTextProtocol
- );
- if (EFI_ERROR (Status)) {
- goto Error;
- }
+ if (*FilePath != L'\0') {
+ DevicePath = Shell->GetDevicePathFromFilePath (FilePath);
+ if (DevicePath != NULL) {
+ Status = gBS->LocateProtocol (
+ &gEfiDevicePathToTextProtocolGuid,
+ NULL,
+ (VOID **)&EfiDevicePathToTextProtocol
+ );
+ if (EFI_ERROR (Status)) {
+ goto Error;
+ }
- TextDevicePath = EfiDevicePathToTextProtocol->ConvertDevicePathToText (
- DevicePath,
- FALSE,
- FALSE
- );
- if (TextDevicePath == NULL) {
- Status = EFI_OUT_OF_RESOURCES;
- goto Error;
- }
- FdtVariableValue = TextDevicePath;
- } else {
- //
- // Try to convert back the EFI Device Path String into a EFI device Path
- // to ensure the format is valid
- //
- Status = gBS->LocateProtocol (
- &gEfiDevicePathFromTextProtocolGuid,
- NULL,
- (VOID **)&EfiDevicePathFromTextProtocol
- );
- if (EFI_ERROR (Status)) {
- goto Error;
- }
+ TextDevicePath = EfiDevicePathToTextProtocol->ConvertDevicePathToText (
+ DevicePath,
+ FALSE,
+ FALSE
+ );
+ if (TextDevicePath == NULL) {
+ Status = EFI_OUT_OF_RESOURCES;
+ goto Error;
+ }
+ FdtVariableValue = TextDevicePath;
+ } else {
+ //
+ // Try to convert back the EFI Device Path String into a EFI device Path
+ // to ensure the format is valid
+ //
+ Status = gBS->LocateProtocol (
+ &gEfiDevicePathFromTextProtocolGuid,
+ NULL,
+ (VOID **)&EfiDevicePathFromTextProtocol
+ );
+ if (EFI_ERROR (Status)) {
+ goto Error;
+ }
- DevicePath = EfiDevicePathFromTextProtocol->ConvertTextToDevicePath (
- FilePath
- );
- if (DevicePath == NULL) {
- Status = EFI_INVALID_PARAMETER;
- goto Error;
+ DevicePath = EfiDevicePathFromTextProtocol->ConvertTextToDevicePath (
+ FilePath
+ );
+ if (DevicePath == NULL) {
+ Status = EFI_INVALID_PARAMETER;
+ goto Error;
+ }
+ FdtVariableValue = (CHAR16*)FilePath;
}
- FdtVariableValue = (CHAR16*)FilePath;
}
Status = gRT->SetVariable (
@@ -801,19 +804,29 @@ UpdateFdtTextDevicePath ( EFI_VARIABLE_RUNTIME_ACCESS |
EFI_VARIABLE_NON_VOLATILE |
EFI_VARIABLE_BOOTSERVICE_ACCESS ,
- StrSize (FdtVariableValue),
+ (FdtVariableValue != NULL) ?
+ StrSize (FdtVariableValue) : 0,
FdtVariableValue
);
Error:
ShellStatus = EfiCodeToShellCode (Status);
if (!EFI_ERROR (Status)) {
- ShellPrintHiiEx (
- -1, -1, NULL,
- STRING_TOKEN (STR_SETFDT_UPDATE_SUCCEEDED),
- mFdtPlatformDxeHiiHandle,
- FdtVariableValue
- );
+ if (FdtVariableValue != NULL) {
+ ShellPrintHiiEx (
+ -1, -1, NULL,
+ STRING_TOKEN (STR_SETFDT_UPDATE_SUCCEEDED),
+ mFdtPlatformDxeHiiHandle,
+ FdtVariableValue
+ );
+ } else {
+ ShellPrintHiiEx (
+ -1, -1, NULL,
+ STRING_TOKEN (STR_SETFDT_UPDATE_DELETED),
+ mFdtPlatformDxeHiiHandle,
+ FdtVariableValue
+ );
+ }
} else {
if (Status == EFI_INVALID_PARAMETER) {
ShellPrintHiiEx (
|