git: d5edf13d013f - main - bhyve: add basic TPM device
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Date: Mon, 12 Jun 2023 11:04:45 UTC
The branch main has been updated by corvink: URL: https://cgit.FreeBSD.org/src/commit/?id=d5edf13d013f3298e7f703c406223feb84810a73 commit d5edf13d013f3298e7f703c406223feb84810a73 Author: Corvin Köhne <corvink@FreeBSD.org> AuthorDate: 2023-05-15 11:00:06 +0000 Commit: Corvin Köhne <corvink@FreeBSD.org> CommitDate: 2023-06-12 11:04:35 +0000 bhyve: add basic TPM device Add an empty TPM device struct which will be used for TPM emulation in subsequent commits. Reviewed by: markj MFC after: 1 week Sponsored by: Beckhoff Automation GmbH & Co. KG Differential Revision: https://reviews.freebsd.org/D40452 --- usr.sbin/bhyve/Makefile | 1 + usr.sbin/bhyve/tpm_device.c | 68 +++++++++++++++++++++++++++++++++++++++++++++ usr.sbin/bhyve/tpm_device.h | 18 ++++++++++++ 3 files changed, 87 insertions(+) diff --git a/usr.sbin/bhyve/Makefile b/usr.sbin/bhyve/Makefile index 65a32d2fb0b9..ae1e82e7b828 100644 --- a/usr.sbin/bhyve/Makefile +++ b/usr.sbin/bhyve/Makefile @@ -72,6 +72,7 @@ SRCS= \ smbiostbl.c \ sockstream.c \ task_switch.c \ + tpm_device.c \ uart_emul.c \ usb_emul.c \ usb_mouse.c \ diff --git a/usr.sbin/bhyve/tpm_device.c b/usr.sbin/bhyve/tpm_device.c new file mode 100644 index 000000000000..77fd1ccf6a52 --- /dev/null +++ b/usr.sbin/bhyve/tpm_device.c @@ -0,0 +1,68 @@ +/*- + * SPDX-License-Identifier: BSD-2-Clause + * + * Copyright (c) 2023 Beckhoff Automation GmbH & Co. KG + * Author: Corvin Köhne <corvink@FreeBSD.org> + */ + +#include <sys/types.h> + +#include <err.h> +#include <errno.h> +#include <stdlib.h> +#include <string.h> +#include <vmmapi.h> + +#include "config.h" +#include "tpm_device.h" + +struct tpm_device { + struct vmctx *vm_ctx; +}; + +void +tpm_device_destroy(struct tpm_device *const dev) +{ + if (dev == NULL) + return; + + free(dev); +} + +int +tpm_device_create(struct tpm_device **const new_dev, struct vmctx *const vm_ctx, + nvlist_t *const nvl) +{ + struct tpm_device *dev = NULL; + const char *value; + int error; + + if (new_dev == NULL || vm_ctx == NULL) { + error = EINVAL; + goto err_out; + } + + value = get_config_value_node(nvl, "version"); + if (value == NULL || strcmp(value, "2.0")) { + warnx("%s: unsupported tpm version %s", __func__, value); + error = EINVAL; + goto err_out; + } + + dev = calloc(1, sizeof(*dev)); + if (dev == NULL) { + error = ENOMEM; + goto err_out; + } + + dev->vm_ctx = vm_ctx; + + *new_dev = dev; + + return (0); + +err_out: + tpm_device_destroy(dev); + + return (error); +} diff --git a/usr.sbin/bhyve/tpm_device.h b/usr.sbin/bhyve/tpm_device.h new file mode 100644 index 000000000000..a17c85c2ed47 --- /dev/null +++ b/usr.sbin/bhyve/tpm_device.h @@ -0,0 +1,18 @@ +/*- + * SPDX-License-Identifier: BSD-2-Clause + * + * Copyright (c) 2023 Beckhoff Automation GmbH & Co. KG + * Author: Corvin Köhne <corvink@FreeBSD.org> + */ + +#pragma once + +#include <vmmapi.h> + +#include "config.h" + +struct tpm_device; + +int tpm_device_create(struct tpm_device **new_dev, struct vmctx *vm_ctx, + nvlist_t *nvl); +void tpm_device_destroy(struct tpm_device *dev);