Add parameter checking for PEI service AllocatePages(), according to PI1.2 errata A.

[mirror_edk2.git] / MdePkg / Include / Protocol / HiiConfigAccess.h

/** @file\r
\r
  The EFI HII results processing protocol invokes this type of protocol \r
  when it needs to forward results to a driver's configuration handler. \r
  This protocol is published by drivers providing and requesting \r
  configuration data from HII. It may only be invoked by HII.\r
  \r
  Copyright (c) 2006 - 2009, Intel Corporation\r
  All rights reserved. This program and the accompanying materials                          \r
  are licensed and made available under the terms and conditions of the BSD License         \r
  which accompanies this distribution.  The full text of the license may be found at        \r
  http://opensource.org/licenses/bsd-license.php                                            \r
\r
  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,                     \r
  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.             \r
\r
**/\r
\r
\r
#ifndef __EFI_HII_CONFIG_ACCESS_H__\r
#define __EFI_HII_CONFIG_ACCESS_H__\r
\r
#include <Protocol/FormBrowser2.h>\r
\r
#define EFI_HII_CONFIG_ACCESS_PROTOCOL_GUID  \\r
  { 0x330d4706, 0xf2a0, 0x4e4f, { 0xa3, 0x69, 0xb6, 0x6f, 0xa8, 0xd5, 0x43, 0x85 } }\r
\r
typedef struct _EFI_HII_CONFIG_ACCESS_PROTOCOL  EFI_HII_CONFIG_ACCESS_PROTOCOL;\r
\r
typedef UINTN EFI_BROWSER_ACTION;\r
\r
#define EFI_BROWSER_ACTION_CHANGING   0\r
#define EFI_BROWSER_ACTION_CHANGED    1\r
#define EFI_BROWSER_ACTION_RETRIEVE   2\r
#define EFI_BROWSER_ACTION_FORM_OPEN  3\r
#define EFI_BROWSER_ACTION_FORM_CLOSE 4\r
\r
/**\r
   \r
  This function allows the caller to request the current\r
  configuration for one or more named elements. The resulting\r
  string is in <ConfigAltResp> format. Any and all alternative\r
  configuration strings shall also be appended to the end of the\r
  current configuration string. If they are, they must appear\r
  after the current configuration. They must contain the same\r
  routing (GUID, NAME, PATH) as the current configuration string.\r
  They must have an additional description indicating the type of\r
  alternative configuration the string represents,\r
  "ALTCFG=<StringToken>". That <StringToken> (when\r
  converted from Hex UNICODE to binary) is a reference to a\r
  string in the associated string pack.\r
\r
  @param This       Points to the EFI_HII_CONFIG_ACCESS_PROTOCOL.\r
\r
  @param Request    A null-terminated Unicode string in\r
                    <ConfigRequest> format. Note that this\r
                    includes the routing information as well as\r
                    the configurable name / value pairs. It is\r
                    invalid for this string to be in\r
                    <MultiConfigRequest> format.\r
\r
  @param Progress   On return, points to a character in the\r
                    Request string. Points to the string's null\r
                    terminator if request was successful. Points\r
                    to the most recent "&" before the first\r
                    failing name / value pair (or the beginning\r
                    of the string if the failure is in the first\r
                    name / value pair) if the request was not\r
                    successful\r
\r
  @param Results    A null-terminated Unicode string in\r
                    <ConfigAltResp> format which has all values\r
                    filled in for the names in the Request string.\r
                    String to be allocated by the called function.\r
\r
  @retval EFI_SUCCESS             The Results string is filled with the\r
                                  values corresponding to all requested\r
                                  names.\r
\r
  @retval EFI_OUT_OF_RESOURCES    Not enough memory to store the\r
                                  parts of the results that must be\r
                                  stored awaiting possible future\r
                                  protocols.\r
\r
  @retval EFI_INVALID_PARAMETER   For example, passing in a NULL\r
                                  for the Request parameter\r
                                  would result in this type of\r
                                  error. In this case, the\r
                                  Progress parameter would be\r
                                  set to NULL. \r
\r
  @retval EFI_NOT_FOUND           Routing data doesn't match any\r
                                  known driver. Progress set to the\r
                                  first character in the routing header.\r
                                  Note: There is no requirement that the\r
                                  driver validate the routing data. It\r
                                  must skip the <ConfigHdr> in order to\r
                                  process the names.\r
\r
  @retval EFI_INVALID_PARAMETER   Illegal syntax. Progress set\r
                                  to most recent "&" before the\r
                                  error or the beginning of the\r
                                  string.\r
\r
  @retval EFI_INVALID_PARAMETER   Unknown name. Progress points\r
                                  to the & before the name in\r
                                  question.\r
\r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI * EFI_HII_ACCESS_EXTRACT_CONFIG)(\r
  IN CONST  EFI_HII_CONFIG_ACCESS_PROTOCOL  *This,\r
  IN CONST  EFI_STRING                      Request,\r
  OUT       EFI_STRING                      *Progress,\r
  OUT       EFI_STRING                      *Results\r
);\r
\r
\r
/**\r
   \r
  This function applies changes in a driver's configuration.\r
  Input is a Configuration, which has the routing data for this\r
  driver followed by name / value configuration pairs. The driver\r
  must apply those pairs to its configurable storage. If the\r
  driver's configuration is stored in a linear block of data\r
  and the driver's name / value pairs are in <BlockConfig>\r
  format, it may use the ConfigToBlock helper function (above) to\r
  simplify the job.\r
\r
  @param This           Points to the EFI_HII_CONFIG_ACCESS_PROTOCOL.\r
\r
  @param Configuration  A null-terminated Unicode string in\r
                        <ConfigString> format. \r
  \r
  @param Progress       A pointer to a string filled in with the\r
                        offset of the most recent '&' before the\r
                        first failing name / value pair (or the\r
                        beginn ing of the string if the failure\r
                        is in the first name / value pair) or\r
                        the terminating NULL if all was\r
                        successful.\r
\r
  @retval EFI_SUCCESS             The results have been distributed or are\r
                                  awaiting distribution.\r
  \r
  @retval EFI_OUT_OF_RESOURCES    Not enough memory to store the\r
                                  parts of the results that must be\r
                                  stored awaiting possible future\r
                                  protocols.\r
  \r
  @retval EFI_INVALID_PARAMETERS  Passing in a NULL for the\r
                                  Results parameter would result\r
                                  in this type of error.\r
  \r
  @retval EFI_NOT_FOUND           Target for the specified routing data\r
                                  was not found\r
\r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI * EFI_HII_ACCESS_ROUTE_CONFIG)(\r
  IN CONST  EFI_HII_CONFIG_ACCESS_PROTOCOL  *This,\r
  IN CONST  EFI_STRING                      Configuration,\r
  OUT       EFI_STRING                      *Progress\r
);\r
\r
/**\r
   \r
  This function is called to provide results data to the driver.\r
  This data consists of a unique key that is used to identify\r
  which data is either being passed back or being asked for.\r
\r
  @param  This                   Points to the EFI_HII_CONFIG_ACCESS_PROTOCOL.\r
  @param  Action                 Specifies the type of action taken by the browser.\r
  @param  QuestionId             A unique value which is sent to the original\r
                                 exporting driver so that it can identify the type\r
                                 of data to expect. The format of the data tends to \r
                                 vary based on the opcode that generated the callback.\r
  @param  Type                   The type of value for the question.\r
  @param  Value                  A pointer to the data being sent to the original\r
                                 exporting driver.\r
  @param  ActionRequest          On return, points to the action requested by the\r
                                 callback function.\r
\r
  @retval EFI_SUCCESS            The callback successfully handled the action.\r
  @retval EFI_OUT_OF_RESOURCES   Not enough storage is available to hold the\r
                                 variable and its data.\r
  @retval EFI_DEVICE_ERROR       The variable could not be saved.\r
  @retval EFI_UNSUPPORTED        The specified Action is not supported by the\r
                                 callback.\r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *EFI_HII_ACCESS_FORM_CALLBACK)(\r
  IN     CONST EFI_HII_CONFIG_ACCESS_PROTOCOL   *This,\r
  IN     EFI_BROWSER_ACTION                     Action,\r
  IN     EFI_QUESTION_ID                        QuestionId,\r
  IN     UINT8                                  Type,\r
  IN OUT EFI_IFR_TYPE_VALUE                     *Value,\r
  OUT    EFI_BROWSER_ACTION_REQUEST             *ActionRequest\r
  )\r
  ;\r
  \r
///\r
/// This protocol provides a callable interface between the HII and\r
/// drivers. Only drivers which provide IFR data to HII are required\r
/// to publish this protocol.\r
///\r
struct _EFI_HII_CONFIG_ACCESS_PROTOCOL {\r
  EFI_HII_ACCESS_EXTRACT_CONFIG     ExtractConfig;\r
  EFI_HII_ACCESS_ROUTE_CONFIG       RouteConfig;\r
  EFI_HII_ACCESS_FORM_CALLBACK      Callback;\r
} ;\r
\r
extern EFI_GUID gEfiHiiConfigAccessProtocolGuid;\r
\r
#endif\r
\r
\r