Add definitions and utilities for EFI drivers
This patch adds definitions and utility code for creating EFI drivers using the EFI_DRIVER_BINDING_PROTOCOL. Submitted by: Eric McCorkle Differential Revision: https://reviews.freebsd.org/D11852
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Warner Losh
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38
sys/boot/efi/include/efi_driver_utils.h
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38
sys/boot/efi/include/efi_driver_utils.h
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@ -0,0 +1,38 @@
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/*-
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* Copyright (c) 2017 Eric McCorkle
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _EFI_DRIVER_UTILS_H_
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#define _EFI_DRIVER_UTILS_H_
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#include <efi.h>
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#include <efiprot.h>
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extern EFI_STATUS install_driver(EFI_DRIVER_BINDING *driver);
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extern EFI_STATUS connect_controllers(EFI_GUID *filter);
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#endif
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45
sys/boot/efi/include/efi_drivers.h
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45
sys/boot/efi/include/efi_drivers.h
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@ -0,0 +1,45 @@
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/*-
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* Copyright (c) 2016 Eric McCorkle
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _EFI_DRIVERS_H_
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#define _EFI_DRIVERS_H_
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#include <bootstrap.h>
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typedef struct efi_driver_t {
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const char *name;
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void (*init)(void);
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} efi_driver_t;
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extern struct devsw efipart_dev;
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extern int efipart_getdesc(struct devdesc *dev, char **out);
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/* EFI drivers. */
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extern const efi_driver_t fs_driver;
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#endif
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@ -27,6 +27,8 @@ Revision History
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--*/
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#include <efidef.h>
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//
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// Device Path protocol
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//
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@ -555,4 +557,80 @@ typedef struct _EFI_UNICODE_COLLATION_INTERFACE {
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CHAR8 *SupportedLanguages;
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} EFI_UNICODE_COLLATION_INTERFACE;
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//
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// Driver Binding protocol
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//
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#define DRIVER_BINDING_PROTOCOL \
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{ 0x18a031ab, 0xb443, 0x4d1a, {0xa5, 0xc0, 0x0c, 0x09, 0x26, 0x1e, 0x9f, 0x71} }
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INTERFACE_DECL(_EFI_DRIVER_BINDING);
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typedef
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EFI_STATUS
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(EFIAPI *EFI_DRIVER_BINDING_SUPPORTED) (
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IN struct _EFI_DRIVER_BINDING *This,
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IN EFI_HANDLE ControllerHandle,
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IN EFI_DEVICE_PATH *RemainingPath
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);
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typedef
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EFI_STATUS
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(EFIAPI *EFI_DRIVER_BINDING_START) (
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IN struct _EFI_DRIVER_BINDING *This,
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IN EFI_HANDLE ControllerHandle,
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IN EFI_DEVICE_PATH *RemainingPath
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);
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typedef
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EFI_STATUS
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(EFIAPI *EFI_DRIVER_BINDING_STOP) (
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IN struct _EFI_DRIVER_BINDING *This,
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IN EFI_HANDLE ControllerHandle,
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IN UINTN NumberOfChildren,
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IN EFI_HANDLE *ChildHandleBuffer
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);
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typedef struct _EFI_DRIVER_BINDING {
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EFI_DRIVER_BINDING_SUPPORTED Supported;
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EFI_DRIVER_BINDING_START Start;
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EFI_DRIVER_BINDING_STOP Stop;
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UINT32 Version;
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EFI_HANDLE ImageHandle;
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EFI_HANDLE DriverBindingHandle;
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} EFI_DRIVER_BINDING;
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//
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// Component Name Protocol 2
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//
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#define COMPONENT_NAME2_PROTOCOL \
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{ 0x6a7a5cff, 0xe8d9, 0x4f70, {0xba, 0xda, 0x75, 0xab, 0x30, 0x25, 0xce, 0x14 } }
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INTERFACE_DECL(_EFI_COMPONENT_NAME2);
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typedef
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EFI_STATUS
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(EFIAPI *EFI_COMPONENT_NAME_GET_DRIVER_NAME) (
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IN struct _EFI_COMPONENT_NAME2 *This,
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IN CHAR8 * Language,
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OUT CHAR16 **DriverName
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);
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typedef
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EFI_STATUS
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(EFIAPI *EFI_COMPONENT_NAME_GET_CONTROLLER_NAME) (
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IN struct _EFI_COMPONENT_NAME2 *This,
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IN EFI_HANDLE ControllerHandle,
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IN EFI_HANDLE ChildHandle OPTIONAL,
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IN CHAR8 *Language,
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OUT CHAR16 **ControllerName
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);
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typedef struct _EFI_COMPONENT_NAME2 {
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EFI_COMPONENT_NAME_GET_DRIVER_NAME GetDriverName;
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EFI_COMPONENT_NAME_GET_CONTROLLER_NAME GetControllerName;
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CHAR8 **SupportedLanguages;
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} EFI_COMPONENT_NAME2;
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#endif
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@ -12,7 +12,7 @@ INTERNALLIB=
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WARNS?= 2
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SRCS= delay.c devpath.c efi_console.c efinet.c efipart.c env.c errno.c \
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handles.c wchar.c libefi.c
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handles.c wchar.c libefi.c efi_driver_utils.c
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.if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386"
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SRCS+= time.c
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91
sys/boot/efi/libefi/efi_driver_utils.c
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91
sys/boot/efi/libefi/efi_driver_utils.c
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@ -0,0 +1,91 @@
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/*-
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* Copyright (c) 2017 Eric McCorkle
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <stdbool.h>
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#include <efi.h>
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#include <efilib.h>
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#include "efi_driver_utils.h"
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static EFI_GUID DriverBindingProtocolGUID = DRIVER_BINDING_PROTOCOL;
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EFI_STATUS
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connect_controllers(EFI_GUID *filter)
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{
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EFI_STATUS status;
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EFI_HANDLE *handles;
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UINTN nhandles, i, hsize;
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nhandles = 0;
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hsize = 0;
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status = BS->LocateHandle(ByProtocol, filter, NULL,
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&hsize, NULL);
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if(status != EFI_BUFFER_TOO_SMALL) {
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return (status);
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}
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handles = malloc(hsize);
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nhandles = hsize / sizeof(EFI_HANDLE);
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status = BS->LocateHandle(ByProtocol, filter, NULL,
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&hsize, handles);
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if(EFI_ERROR(status)) {
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return (status);
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}
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for(i = 0; i < nhandles; i++) {
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BS->ConnectController(handles[i], NULL, NULL, true);
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}
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free(handles);
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return (status);
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}
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EFI_STATUS
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install_driver(EFI_DRIVER_BINDING *driver)
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{
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EFI_STATUS status;
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driver->ImageHandle = IH;
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driver->DriverBindingHandle = NULL;
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status = BS->InstallMultipleProtocolInterfaces(
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&(driver->DriverBindingHandle),
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&DriverBindingProtocolGUID, driver,
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NULL);
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if (EFI_ERROR(status)) {
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printf("Failed to install driver (%ld)!\n",
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EFI_ERROR_CODE(status));
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}
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return (status);
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}
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