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54f97d1eef
The EFI memory map may change before or during the first ExitBootServices call. In that case ExitBootServices returns an error, and GetMemoryMap and ExitBootServices must be retried. Glue together calls to GetMemoryMap(), ExitBootServices() and storage of (now up-to-date) MODINFOMD_EFI_MAP metadata within a single function. That new function - bi_add_efi_data_and_exit() - uses space previously allocated in bi_load_efi_data() to store the memory map (it will fail if that space is too short). It handles re-calling GetMemoryMap() once to update the map key if necessary. Finally, if ExitBootServices() is successful, it stores the memory map and its header as MODINFOMD_EFI_MAP metadata. ExitBootServices() calls are now done earlier, from within arch- independent bi_load() code. PR: 202455 Submitted by: Ganael LAPLANCHE Reviewed by: kib MFC after: 2 weeks Relnotes: Yes Differential Revision: https://reviews.freebsd.org/D4296
49 lines
2 KiB
C
49 lines
2 KiB
C
/*-
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* Copyright (c) 2013 The FreeBSD Foundation
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* All rights reserved.
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*
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* This software was developed by Benno Rice under sponsorship from
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* the FreeBSD Foundation.
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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 _LOADER_EFI_COPY_H_
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#define _LOADER_EFI_COPY_H_
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int efi_autoload(void);
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int efi_getdev(void **vdev, const char *devspec, const char **path);
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char *efi_fmtdev(void *vdev);
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int efi_setcurrdev(struct env_var *ev, int flags, const void *value);
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int efi_copy_init(void);
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ssize_t efi_copyin(const void *src, vm_offset_t dest, const size_t len);
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ssize_t efi_copyout(const vm_offset_t src, void *dest, const size_t len);
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ssize_t efi_readin(const int fd, vm_offset_t dest, const size_t len);
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void * efi_translate(vm_offset_t ptr);
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void efi_copy_finish(void);
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#endif /* _LOADER_EFI_COPY_H_ */
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