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/*-
* Copyright (c) 2015 Eric McCorkle
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _BOOT_MODULE_H_
#define _BOOT_MODULE_H_
#include <stdbool.h>
#include <efi.h>
#include <efilib.h>
#include <eficonsctl.h>
#ifdef EFI_DEBUG
#define DPRINTF(fmt, args...) printf(fmt, ##args)
#define DSTALL(d) BS->Stall(d)
#else
#define DPRINTF(fmt, ...) {}
#define DSTALL(d) {}
#endif
/* EFI device info */
typedef struct dev_info
{
EFI_BLOCK_IO *dev;
EFI_DEVICE_PATH *devpath;
EFI_HANDLE devhandle;
void *devdata;
uint64_t partoff;
int preferred;
struct dev_info *next;
} dev_info_t;
/*
* A boot loader module.
*
* This is a standard interface for filesystem modules in the EFI system.
*/
typedef struct boot_module_t
{
const char *name;
/* init is the optional initialiser for the module. */
void (*init)(void);
/*
* probe checks to see if the module can handle dev.
*
* Return codes:
* EFI_SUCCESS = The module can handle the device.
* EFI_NOT_FOUND = The module can not handle the device.
* Other = The module encountered an error.
*/
EFI_STATUS (*probe)(dev_info_t* dev);
/*
* load should select the best out of a set of devices that probe
* indicated were loadable and load the specified file.
*
* Return codes:
* EFI_SUCCESS = The module can handle the device.
* EFI_NOT_FOUND = The module can not handle the device.
* Other = The module encountered an error.
*/
EFI_STATUS (*load)(const char *filepath, dev_info_t *devinfo,
void **buf, size_t *bufsize);
/* status outputs information about the probed devices. */
void (*status)(void);
/* valid devices as found by probe. */
dev_info_t *(*devices)(void);
} boot_module_t;
extern const boot_module_t *boot_modules[];
extern const UINTN num_boot_modules;
/* Standard boot modules. */
#ifdef EFI_UFS_BOOT
extern const boot_module_t ufs_module;
#endif
#ifdef EFI_ZFS_BOOT
extern const boot_module_t zfs_module;
#endif
/* Functions available to modules. */
extern void add_device(dev_info_t **devinfop, dev_info_t *devinfo);
#endif
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