Add a plug-in library for UiApp that creates a 'UEFI Shell' menu
option at the root level which gives access to a form that allows
the UEFI Shell to be launched.
This gives the PlatformBootManagerLib implementation of the platform
more flexibility in the way it handles boot options pointing to the
UEFI Shell, which will typically be invoked with only the boot path
connected on fast boots.
This library may be incorporated to a platform build by adding a
NULL resolution to the <LibraryClasses> section of the UiApp.inf
{} block in the platform .DSC
Signed-off-by: Ard Biesheuvel <ard.biesheu...@arm.com>
---
ShellPkg/Library/ShellBootManagerLib/ShellBootManagerLib.inf | 45 ++++
ShellPkg/Library/ShellBootManagerLib/ShellBootManagerLib.h | 44 ++++
ShellPkg/Library/ShellBootManagerLib/ShellBootManagerLib.c | 258
++++++++++++++++++++
ShellPkg/Library/ShellBootManagerLib/ShellBmStrings.uni | 17 ++
ShellPkg/Library/ShellBootManagerLib/ShellBmVfr.Vfr | 37 +++
5 files changed, 401 insertions(+)
diff --git a/ShellPkg/Library/ShellBootManagerLib/ShellBootManagerLib.inf
b/ShellPkg/Library/ShellBootManagerLib/ShellBootManagerLib.inf
new file mode 100644
index 000000000000..d8b56268c08f
--- /dev/null
+++ b/ShellPkg/Library/ShellBootManagerLib/ShellBootManagerLib.inf
@@ -0,0 +1,45 @@
+## @file
+#
+# Boot Maintenance Manager Library to add a 'UEFI Shell' option to UiApp
+#
+# Copyright (c) 2020, Arm Ltd. All rights reserved.<BR>
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+
+[Defines]
+ INF_VERSION = 1.27
+ BASE_NAME = ShellBootManagerLib
+ FILE_GUID = f84d949a-1ffd-447e-903d-5def3c34040b
+ MODULE_TYPE = DXE_DRIVER
+ VERSION_STRING = 1.0
+ LIBRARY_CLASS = NULL|DXE_DRIVER UEFI_APPLICATION
+ CONSTRUCTOR = ShellBootManagerLibConstructor
+ DESTRUCTOR = ShellBootManagerLibDestructor
+
+[Sources]
+ ShellBootManagerLib.c
+ ShellBootManagerLib.h
+ ShellBmVfr.Vfr
+ ShellBmStrings.uni
+
+[Packages]
+ MdePkg/MdePkg.dec
+ MdeModulePkg/MdeModulePkg.dec
+ ShellPkg/ShellPkg.dec
+
+[LibraryClasses]
+ DebugLib
+ DevicePathLib
+ DxeServicesLib
+ HiiLib
+ MemoryAllocationLib
+ UefiBootServicesTableLib
+
+[Guids]
+ gEfiIfrFrontPageGuid ## CONSUMES ## GUID
+ gUefiShellFileGuid ## CONSUMES ## GUID
+
+[Protocols]
+ gEfiHiiConfigAccessProtocolGuid ## PRODUCES
+ gEfiDevicePathProtocolGuid ## PRODUCES
diff --git a/ShellPkg/Library/ShellBootManagerLib/ShellBootManagerLib.h
b/ShellPkg/Library/ShellBootManagerLib/ShellBootManagerLib.h
new file mode 100644
index 000000000000..e9cdfb6a8a64
--- /dev/null
+++ b/ShellPkg/Library/ShellBootManagerLib/ShellBootManagerLib.h
@@ -0,0 +1,44 @@
+/** @file
+
+ Boot Maintenance Manager Library to add a 'UEFI Shell' option to UiApp
+
+ Copyright (c) 2020, Arm Ltd. All rights reserved.<BR>
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <Uefi/UefiBaseType.h>
+
+#include <Protocol/DevicePath.h>
+#include <Protocol/HiiConfigAccess.h>
+
+extern UINT8 ShellBmVfrBin[];
+
+#define FORMSET_GUID { 0x54335e64, 0x4ebc, 0x4f7d, { 0x8a, 0x9a, 0x94, 0x10,
0xf5, 0x53, 0xae, 0x9d } }
+
+///
+/// HII specific Vendor Device Path definition.
+///
+#pragma pack(1)
+typedef struct {
+ VENDOR_DEVICE_PATH VendorDevicePath;
+ EFI_DEVICE_PATH_PROTOCOL End;
+} HII_VENDOR_DEVICE_PATH;
+#pragma pack()
+
+#define SHELL_BM_CALLBACK_DATA_SIGNATURE SIGNATURE_32 ('S', 'B', 'C', 'D')
+
+typedef struct {
+ UINTN Signature;
+
+ //
+ // HII relative handles
+ //
+ EFI_HII_HANDLE HiiHandle;
+ EFI_HANDLE DriverHandle;
+
+ //
+ // Produced protocols
+ //
+ EFI_HII_CONFIG_ACCESS_PROTOCOL ConfigAccess;
+} SHELL_BM_CALLBACK_DATA;
diff --git a/ShellPkg/Library/ShellBootManagerLib/ShellBootManagerLib.c
b/ShellPkg/Library/ShellBootManagerLib/ShellBootManagerLib.c
new file mode 100644
index 000000000000..195f50601dc0
--- /dev/null
+++ b/ShellPkg/Library/ShellBootManagerLib/ShellBootManagerLib.c
@@ -0,0 +1,258 @@
+/** @file
+
+ Boot Maintenance Manager Library to add a 'UEFI Shell' option to UiApp
+
+ Copyright (c) 2020, Arm Ltd. All rights reserved.<BR>
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <PiDxe.h>
+
+#include <Library/DebugLib.h>
+#include <Library/DevicePathLib.h>
+#include <Library/DxeServicesLib.h>
+#include <Library/HiiLib.h>
+#include <Library/MemoryAllocationLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+
+#include "ShellBootManagerLib.h"
+
+STATIC CONST EFI_GUID mFormsetGuid = FORMSET_GUID;
+STATIC EFI_DEVICE_PATH_PROTOCOL *mShellFileDevicePath;
+
+STATIC HII_VENDOR_DEVICE_PATH mShellBmHiiVendorDevicePath = {
+ {
+ {
+ HARDWARE_DEVICE_PATH,
+ HW_VENDOR_DP,
+ {
+ (UINT8) (sizeof (VENDOR_DEVICE_PATH)),
+ (UINT8) ((sizeof (VENDOR_DEVICE_PATH)) >> 8)
+ }
+ },
+ //
+ // File GUID: f84d949a-1ffd-447e-903d-5def3c34040b
+ //
+ { 0xf84d949a, 0x1ffd, 0x447e, { 0x90, 0x3d, 0x5d, 0xef, 0x3c, 0x34, 0x04,
0x0b } }
+ },
+ {
+ END_DEVICE_PATH_TYPE,
+ END_ENTIRE_DEVICE_PATH_SUBTYPE,
+ {
+ (UINT8) (END_DEVICE_PATH_LENGTH),
+ (UINT8) ((END_DEVICE_PATH_LENGTH) >> 8)
+ }
+ }
+};
+
+/**
+ This function allows a caller to extract the current configuration for one
+ or more named elements from the target driver.
+
+
+ @param This Points to the EFI_HII_CONFIG_ACCESS_PROTOCOL.
+ @param Request A null-terminated Unicode string in <ConfigRequest>
format.
+ @param Progress On return, points to a character in the Request
string.
+ Points to the string's null terminator if request was
successful.
+ Points to the most recent '&' before the first
failing name/value
+ pair (or the beginning of the string if the failure
is in the
+ first name/value pair) if the request was not
successful.
+ @param Results A null-terminated Unicode string in <ConfigAltResp>
format which
+ has all values filled in for the names in the Request
string.
+ String to be allocated by the called function.
+
+ @retval EFI_SUCCESS The Results is filled with the requested
values.
+ @retval EFI_OUT_OF_RESOURCES Not enough memory to store the results.
+ @retval EFI_INVALID_PARAMETER Request is illegal syntax, or unknown name.
+ @retval EFI_NOT_FOUND Routing data doesn't match any storage in
this driver.
+
+**/
+STATIC
+EFI_STATUS
+EFIAPI
+ShellBmExtractConfig (
+ IN CONST EFI_HII_CONFIG_ACCESS_PROTOCOL *This,
+ IN CONST EFI_STRING Request,
+ OUT EFI_STRING *Progress,
+ OUT EFI_STRING *Results
+ )
+{
+ if (Progress == NULL || Results == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+ *Progress = Request;
+ return EFI_NOT_FOUND;
+}
+
+/**
+ This function processes the results of changes in configuration.
+
+
+ @param This Points to the EFI_HII_CONFIG_ACCESS_PROTOCOL.
+ @param Configuration A null-terminated Unicode string in <ConfigResp>
format.
+ @param Progress A pointer to a string filled in with the offset of
the most
+ recent '&' before the first failing name/value pair
(or the
+ beginning of the string if the failure is in the first
+ name/value pair) or the terminating NULL if all was
successful.
+
+ @retval EFI_SUCCESS The Results is processed successfully.
+ @retval EFI_INVALID_PARAMETER Configuration is NULL.
+ @retval EFI_NOT_FOUND Routing data doesn't match any storage in
this driver.
+
+**/
+STATIC
+EFI_STATUS
+EFIAPI
+ShellBmRouteConfig (
+ IN CONST EFI_HII_CONFIG_ACCESS_PROTOCOL *This,
+ IN CONST EFI_STRING Configuration,
+ OUT EFI_STRING *Progress
+ )
+{
+ if (Configuration == NULL || Progress == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ *Progress = Configuration;
+
+ return EFI_NOT_FOUND;
+}
+
+/**
+ This function processes the results of changes in configuration.
+
+
+ @param This Points to the EFI_HII_CONFIG_ACCESS_PROTOCOL.
+ @param Action Specifies the type of action taken by the browser.
+ @param QuestionId A unique value which is sent to the original
exporting driver
+ so that it can identify the type of data to expect.
+ @param Type The type of value for the question.
+ @param Value A pointer to the data being sent to the original
exporting driver.
+ @param ActionRequest On return, points to the action requested by the
callback function.
+
+ @retval EFI_SUCCESS The callback successfully handled the action.
+ @retval EFI_OUT_OF_RESOURCES Not enough storage is available to hold the
variable and its data.
+ @retval EFI_DEVICE_ERROR The variable could not be saved.
+ @retval EFI_UNSUPPORTED The specified Action is not supported by the
callback.
+
+**/
+STATIC
+EFI_STATUS
+EFIAPI
+ShellBmHiiCallback (
+ IN CONST EFI_HII_CONFIG_ACCESS_PROTOCOL *This,
+ IN EFI_BROWSER_ACTION Action,
+ IN EFI_QUESTION_ID QuestionId,
+ IN UINT8 Type,
+ IN EFI_IFR_TYPE_VALUE *Value,
+ OUT EFI_BROWSER_ACTION_REQUEST *ActionRequest
+ )
+{
+ EFI_HANDLE ImageHandle;
+ EFI_STATUS Status;
+
+ if (Action != EFI_BROWSER_ACTION_CHANGED) {
+ return EFI_SUCCESS;
+ }
+
+ Status = gBS->LoadImage (TRUE, gImageHandle, mShellFileDevicePath, NULL, 0,
+ &ImageHandle);
+ ASSERT_EFI_ERROR (Status);
+
+ //
+ // Clear the screen before.
+ //
+ gST->ConOut->SetAttribute (gST->ConOut, EFI_TEXT_ATTR (EFI_LIGHTGRAY,
EFI_BLACK));
+ gST->ConOut->ClearScreen (gST->ConOut);
+
+ Status = gBS->StartImage (ImageHandle, NULL, NULL);
+ ASSERT_EFI_ERROR (Status);
+ if (EFI_ERROR (Status)) {
+ DEBUG ((DEBUG_WARN, "%a: UEFI Shell returned with status %r\n",
+ __FUNCTION__, Status));
+ }
+ return EFI_SUCCESS;
+}
+
+STATIC SHELL_BM_CALLBACK_DATA mShellBmPrivate = {
+ SHELL_BM_CALLBACK_DATA_SIGNATURE,
+ NULL,
+ NULL,
+ {
+ ShellBmExtractConfig,
+ ShellBmRouteConfig,
+ ShellBmHiiCallback
+ }
+};
+
+EFI_STATUS
+EFIAPI
+ShellBootManagerLibConstructor (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+{
+ EFI_STATUS Status;
+
+ Status = GetFileDevicePathFromAnyFv (&gUefiShellFileGuid, EFI_SECTION_PE32,
+ 0, &mShellFileDevicePath);
+ if (EFI_ERROR (Status)) {
+ DEBUG ((DEBUG_WARN, "%a: failed to locate UEFI shell by GUID %g - %r\n",
+ __FUNCTION__, &gUefiShellFileGuid, Status));
+ return EFI_SUCCESS;
+ }
+
+ //
+ // Install Device Path Protocol and Config Access protocol to driver handle
+ //
+ mShellBmPrivate.DriverHandle = NULL;
+ Status = gBS->InstallMultipleProtocolInterfaces (
+ &mShellBmPrivate.DriverHandle,
+ &gEfiDevicePathProtocolGuid,
+ &mShellBmHiiVendorDevicePath,
+ &gEfiHiiConfigAccessProtocolGuid,
+ &mShellBmPrivate.ConfigAccess,
+ NULL
+ );
+ ASSERT_EFI_ERROR (Status);
+
+ //
+ // Publish our HII data
+ //
+ mShellBmPrivate.HiiHandle = HiiAddPackages (
+ &mFormsetGuid,
+ mShellBmPrivate.DriverHandle,
+ ShellBmVfrBin,
+ ShellBootManagerLibStrings,
+ NULL
+ );
+ ASSERT (mShellBmPrivate.HiiHandle != NULL);
+
+ return EFI_SUCCESS;
+}
+
+EFI_STATUS
+EFIAPI
+ShellBootManagerLibDestructor (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+{
+ EFI_STATUS Status;
+
+ Status = gBS->UninstallMultipleProtocolInterfaces (
+ mShellBmPrivate.DriverHandle,
+ &gEfiDevicePathProtocolGuid,
+ &mShellBmHiiVendorDevicePath,
+ &gEfiHiiConfigAccessProtocolGuid,
+ &mShellBmPrivate.ConfigAccess,
+ NULL
+ );
+ ASSERT_EFI_ERROR (Status);
+
+ HiiRemovePackages (mShellBmPrivate.HiiHandle);
+
+ FreePool (mShellFileDevicePath);
+ return EFI_SUCCESS;
+}
diff --git a/ShellPkg/Library/ShellBootManagerLib/ShellBmStrings.uni
b/ShellPkg/Library/ShellBootManagerLib/ShellBmStrings.uni
new file mode 100644
index 000000000000..6e1962b6d0ec
--- /dev/null
+++ b/ShellPkg/Library/ShellBootManagerLib/ShellBmStrings.uni
@@ -0,0 +1,17 @@
+///** @file
+//
+// Copyright (c) 2020, Arm Ltd. All rights reserved.<BR>
+//
+// SPDX-License-Identifier: BSD-2-Clause-Patent
+//
+// --*/
+
+/=#
+#langdef en-US "English"
+
+#string STR_SHELL_BM_BANNER #language en-US "UEFI Shell"
+#string STR_SHELL_BM_HELP #language en-US "This selection will
take you to the UEFI Shell"
+#string STR_SHELL_BM_BANNER_FORM_TITLE #language en-US "UEFI Shell Menu"
+#string STR_SHELL_BM_ENTER_SHELL #language en-US "Enter the UEFI Shell"
+#string STR_SHELL_BM_ENTER_SHELL_HELP #language en-US "Select this option to
enter the UEFI Shell"
+#string STR_LAST_STRING #language en-US ""
diff --git a/ShellPkg/Library/ShellBootManagerLib/ShellBmVfr.Vfr
b/ShellPkg/Library/ShellBootManagerLib/ShellBmVfr.Vfr
new file mode 100644
index 000000000000..bdff98c7c07a
--- /dev/null
+++ b/ShellPkg/Library/ShellBootManagerLib/ShellBmVfr.Vfr
@@ -0,0 +1,37 @@
+///** @file
+//
+// UEFI Shell Boot Manager formset.
+//
+// Copyright (c) 2004 - 2015, Intel Corporation. All rights reserved.<BR>
+// Copyright (c) 2020, Arm Ltd. All rights reserved.<BR>
+//
+// SPDX-License-Identifier: BSD-2-Clause-Patent
+//
+//**/
+
+#define FORMSET_GUID { 0x54335e64, 0x4ebc, 0x4f7d, 0x8a, 0x9a, 0x94, 0x10,
0xf5, 0x53, 0xae, 0x9d }
+
+#define BOOT_MANAGER_FORM_ID 0x1000
+
+formset
+ guid = FORMSET_GUID,
+ title = STRING_TOKEN(STR_SHELL_BM_BANNER),
+ help = STRING_TOKEN(STR_SHELL_BM_HELP),
+ classguid = gEfiIfrFrontPageGuid,
+
+ form formid = BOOT_MANAGER_FORM_ID,
+ title = STRING_TOKEN(STR_SHELL_BM_BANNER);
+
+ subtitle text = STRING_TOKEN(STR_LAST_STRING);
+ subtitle text = STRING_TOKEN(STR_SHELL_BM_BANNER_FORM_TITLE);
+ subtitle text = STRING_TOKEN(STR_LAST_STRING);
+
+ text
+ help = STRING_TOKEN(STR_SHELL_BM_ENTER_SHELL_HELP),
+ text = STRING_TOKEN(STR_SHELL_BM_ENTER_SHELL),
+ flags = INTERACTIVE,
+ key = 0x1;
+
+ endform;
+
+endformset;
--
2.17.1
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