36ff55f8c8
To allow more general use of the bootrom region, separate initialization from allocation, and allocation from loading a file. The bootrom segment is the high 16MB of the low 4GB region. Each allocation in the segment creates a new mapping with specified protection. By default, allocation begins at the low end of the range. However, the BOOTROM_ALLOC_TOP flag is provided to locate a provided bootrom in the high region it is expected to be in. The existing ROM-file loading code is refactored to use the new interface. Reviewed by: grehan (earlier version) Differential Revision: https://reviews.freebsd.org/D24422
51 lines
1.8 KiB
C
51 lines
1.8 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
|
|
*
|
|
* Copyright (c) 2015 Neel Natu <neel@freebsd.org>
|
|
* 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 ``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 _BOOTROM_H_
|
|
#define _BOOTROM_H_
|
|
|
|
#include <stdbool.h>
|
|
#include <stddef.h>
|
|
#include <stdint.h>
|
|
#include <limits.h>
|
|
|
|
struct vmctx;
|
|
|
|
void init_bootrom(struct vmctx *ctx);
|
|
enum {
|
|
BOOTROM_ALLOC_TOP = 0x80,
|
|
_FORCE_INT = INT_MIN,
|
|
};
|
|
int bootrom_alloc(struct vmctx *ctx, size_t len, int prot, int flags,
|
|
char **region_out, uint64_t *gpa_out);
|
|
int bootrom_loadrom(struct vmctx *ctx, const char *romfile);
|
|
|
|
#endif
|