tyler.durden
/
audk
mirror of https://github.com/acidanthera/audk.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

OvmfPkg: PlatformDxe: connect RouteConfig() to platform data 

Establish the full stack of conversions when modifying the platform
configuration:

       ConfigResp            -- form engine / HII communication
            |
     [ConfigToBlock]
            |
            v
     MAIN_FORM_STATE         -- binary representation of form/widget state
            |
[FormStateToPlatformConfig]
            |
            v
     PLATFORM_CONFIG         -- accessible to DXE and UEFI drivers
            |
   [PlatformConfigSave]
            |
            v
  UEFI non-volatile variable -- accessible to external utilities

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15375 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Laszlo Ersek 2014-03-22 07:14:09 +00:00 committed by jljusten
parent cbd08bcc17
commit ddb2c493f7
1 changed files with 94 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

95
OvmfPkg/PlatformDxe/Platform.c
View File

@ -258,6 +258,62 @@ ExtractConfig (
}
/**
Interpret the binary form state and save it as persistent platform
configuration.
@param[in] MainFormState Binary form/widget state to verify and save.
@retval EFI_SUCCESS Platform configuration saved.
@return Error codes from underlying functions.
**/
STATIC
EFI_STATUS
EFIAPI
FormStateToPlatformConfig (
IN CONST MAIN_FORM_STATE *MainFormState
)
{
EFI_STATUS Status;
PLATFORM_CONFIG PlatformConfig;
CONST GOP_MODE *GopMode;
//
// There's nothing to do with the textual CurrentPreferredResolution field.
// We verify and translate the selection in the drop-down list.
//
if (MainFormState->NextPreferredResolution >= mNumGopModes) {
return EFI_INVALID_PARAMETER;
}
GopMode = mGopModes + MainFormState->NextPreferredResolution;
ZeroMem (&PlatformConfig, sizeof PlatformConfig);
PlatformConfig.HorizontalResolution = GopMode->X;
PlatformConfig.VerticalResolution = GopMode->Y;
Status = PlatformConfigSave (&PlatformConfig);
return Status;
}
/**
This function is called by the HII machinery when it wants the driver to
interpret and persist the form state.
See the precise documentation in the UEFI spec.
@param[in] This The Config Access Protocol instance.
@param[in] Configuration A <ConfigResp> format UCS-2 string describing the
form state.
@param[out] Progress A pointer into Configuration on output,
identifying the element where processing failed.
@retval EFI_SUCCESS Configuration verified, state permanent.
@return Status codes from underlying functions.
**/
STATIC
EFI_STATUS
EFIAPI
@ -267,9 +323,46 @@ RouteConfig (
OUT EFI_STRING *Progress
)
{
MAIN_FORM_STATE MainFormState;
UINTN BlockSize;
EFI_STATUS Status;
DEBUG ((EFI_D_VERBOSE, "%a: Configuration=\"%s\"\n", __FUNCTION__,
Configuration));
return EFI_SUCCESS;
//
// the "read" step in RMW
//
Status = PlatformConfigToFormState (&MainFormState);
if (EFI_ERROR (Status)) {
*Progress = Configuration;
return Status;
}
//
// the "modify" step in RMW
//
// (Update the binary form state. This update may be partial, which is why in
// general we must pre-load the form state from the platform config.)
//
BlockSize = sizeof MainFormState;
Status = gHiiConfigRouting->ConfigToBlock (gHiiConfigRouting, Configuration,
(VOID *) &MainFormState, &BlockSize, Progress);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "%a: ConfigToBlock(): %r, Progress=\"%s\"\n",
__FUNCTION__, Status,
(Status == EFI_BUFFER_TOO_SMALL) ? NULL : *Progress));
return Status;
}
//
// the "write" step in RMW
//
Status = FormStateToPlatformConfig (&MainFormState);
if (EFI_ERROR (Status)) {
*Progress = Configuration;
}
return Status;
}