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Hypervisors, especially type-1 ones, need the firmware/bootcode to put
their initial guest somewhere in memory and pass the information to it
via platform data. The guest-loader is modelled after the generic
loader for exactly this sort of purpose:
$QEMU $ARGS -kernel ~/xen.git/xen/xen \
-append "dom0_mem=1G,max:1G loglvl=all guest_loglvl=all" \
-device guest-loader,addr=0x42000000,kernel=Image,bootargs="root=/dev/sda2 ro console=hvc0 earlyprintk=xen" \
-device guest-loader,addr=0x47000000,initrd=rootfs.cpio
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210303173642.3805-5-alex.bennee@linaro.org>
35 lines
734 B
C
35 lines
734 B
C
/*
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* Guest Loader
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*
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* Copyright (C) 2020 Linaro
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* Written by Alex Bennée <alex.bennee@linaro.org>
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* (based on the generic-loader by Li Guang <lig.fnst@cn.fujitsu.com>)
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*/
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#ifndef GUEST_LOADER_H
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#define GUEST_LOADER_H
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#include "hw/qdev-core.h"
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#include "qom/object.h"
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struct GuestLoaderState {
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/* <private> */
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DeviceState parent_obj;
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/* <public> */
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uint64_t addr;
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char *kernel;
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char *args;
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char *initrd;
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};
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#define TYPE_GUEST_LOADER "guest-loader"
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OBJECT_DECLARE_SIMPLE_TYPE(GuestLoaderState, GUEST_LOADER)
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#endif
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