freebsd-dev/usr.sbin/bhyve/qemu_fwcfg.h
Corvin Köhne 34f804e547
bhyve: add common fwcfg items
Qemu defines some common fwcfg items. We don't need to support all of
them. Only a subset needs to be present for fwcfg to work properly.

- signature
  The signature is used by the guest to check if qemu's fwcfg is
  available or not.
- id
  The id is used by the guest to check which features are supported by
  the fwcfg implementation of the hypervisor.
- file_dir
  The file dir reports all fwcfg items which don't have a fixed index.
  These are mostly user defined fwcfg items.

Reviewed by:		<If someone else reviewed your modification.>
MFC after:		1 week
Sponsored by:		Beckhoff Automation GmbH & Co. KG
Differential Revision:	https://reviews.freebsd.org/D38335
2023-02-28 13:37:12 +01:00

22 lines
411 B
C

/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2021 Beckhoff Automation GmbH & Co. KG
* Author: Corvin Köhne <c.koehne@beckhoff.com>
*/
#pragma once
#include <vmmapi.h>
#define QEMU_FWCFG_MAX_ARCHS 0x2
#define QEMU_FWCFG_MAX_ENTRIES 0x4000
#define QEMU_FWCFG_MAX_NAME 56
struct qemu_fwcfg_item {
uint32_t size;
uint8_t *data;
};
int qemu_fwcfg_init(struct vmctx *const ctx);