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4532588625
Kill our own hand-rolled (and somewhat flawed) devpath_str in favor of the recently added efi_devpath_str in libefi. This gives us much better names at the expense of not being able to debug on EFI 1.2 machines (since the UEFI protocol efi_devpath_str depends on was added in UEFI 2.0). However, this isn't the first thing that requires newer than EFI 1.2, so it's quite possible that this doesn't change the universe of machines we can EFI boot from. This will now give us the full UEFI path, even for devices we don't yet know about. More importantly, it gives us the full HD(...) part of the path, which is sufficient by itself to locate disks that follow the rules (dd one disk (but not partition) to another still needs the rest of the path to disambiguate, but that isn't following the rules that require every GPT table to have globally unique GUIDs for every partion). This also has the side effect of shrinking boot1.efi by ~3k. Sponsored by: Netflix
109 lines
3.2 KiB
C
109 lines
3.2 KiB
C
/*-
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* Copyright (c) 2015 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 _BOOT_MODULE_H_
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#define _BOOT_MODULE_H_
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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 <eficonsctl.h>
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#ifdef EFI_DEBUG
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#define DPRINTF(fmt, args...) printf(fmt, ##args)
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#define DSTALL(d) BS->Stall(d)
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#else
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#define DPRINTF(fmt, ...) {}
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#define DSTALL(d) {}
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#endif
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/* EFI device info */
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typedef struct dev_info
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{
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EFI_BLOCK_IO *dev;
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EFI_DEVICE_PATH *devpath;
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EFI_HANDLE *devhandle;
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void *devdata;
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BOOLEAN preferred;
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struct dev_info *next;
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} dev_info_t;
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/*
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* A boot loader module.
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*
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* This is a standard interface for filesystem modules in the EFI system.
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*/
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typedef struct boot_module_t
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{
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const char *name;
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/* init is the optional initialiser for the module. */
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void (*init)(void);
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/*
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* probe checks to see if the module can handle dev.
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*
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* Return codes:
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* EFI_SUCCESS = The module can handle the device.
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* EFI_NOT_FOUND = The module can not handle the device.
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* Other = The module encountered an error.
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*/
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EFI_STATUS (*probe)(dev_info_t* dev);
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/*
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* load should select the best out of a set of devices that probe
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* indicated were loadable and load the specified file.
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*
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* Return codes:
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* EFI_SUCCESS = The module can handle the device.
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* EFI_NOT_FOUND = The module can not handle the device.
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* Other = The module encountered an error.
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*/
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EFI_STATUS (*load)(const char *filepath, dev_info_t *devinfo,
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void **buf, size_t *bufsize);
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/* status outputs information about the probed devices. */
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void (*status)(void);
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/* valid devices as found by probe. */
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dev_info_t *(*devices)(void);
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} boot_module_t;
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/* Standard boot modules. */
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#ifdef EFI_UFS_BOOT
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extern const boot_module_t ufs_module;
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#endif
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#ifdef EFI_ZFS_BOOT
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extern const boot_module_t zfs_module;
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#endif
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/* Functions available to modules. */
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extern void add_device(dev_info_t **devinfop, dev_info_t *devinfo);
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extern int vsnprintf(char *str, size_t sz, const char *fmt, va_list ap);
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#endif
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