mirror of
https://github.com/projectacrn/acrn-hypervisor.git
synced 2025-08-18 08:11:07 +00:00
63dd23bc9e
The TPM information in ACPI table is for both VPTM and passthough TPM, so only one TPM device is allowed. Tracked-On: #5913 Signed-off-by: Tao Yuhong <yuhong.tao@intel.com> Acked-by: Wang, Yu1 <yu1.wang@intel.com>
111 lines
1.9 KiB
C
111 lines
1.9 KiB
C
/*
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* Copyright (C) 2018 Intel Corporation
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* All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdbool.h>
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#include "vmmapi.h"
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#include "tpm.h"
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#include "tpm_internal.h"
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#include "log.h"
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#include "mmio_dev.h"
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#include "dm.h"
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static int tpm_debug;
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#define LOG_TAG "tpm: "
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#define DPRINTF(fmt, args...) \
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do { if (tpm_debug) pr_dbg(LOG_TAG "%s:" fmt, __func__, ##args); } while (0)
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#define WPRINTF(fmt, args...) \
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do { pr_err(LOG_TAG "%s:" fmt, __func__, ##args); } while (0)
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#define STR_MAX_LEN 1024U
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static char *sock_path = NULL;
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static uint32_t vtpm_crb_mmio_addr = 0U;
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uint32_t get_vtpm_crb_mmio_addr(void) {
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return vtpm_crb_mmio_addr;
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}
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uint32_t get_tpm_crb_mmio_addr(void)
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{
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uint32_t base;
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if (pt_tpm2) {
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base = (uint32_t)get_mmio_dev_tpm2_base_gpa();
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} else {
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base = get_vtpm_crb_mmio_addr();
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}
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return base;
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}
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enum {
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SOCK_PATH_OPT = 0
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};
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char *const token[] = {
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[SOCK_PATH_OPT] = "sock_path",
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NULL
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};
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int acrn_parse_vtpm2(char *arg)
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{
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char *value;
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size_t len = strnlen(arg, STR_MAX_LEN);
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if (len == STR_MAX_LEN)
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return -1;
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if (SOCK_PATH_OPT == getsubopt(&arg, token, &value)) {
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if (value == NULL) {
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DPRINTF("Invalid vtpm socket path\n");
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return -1;
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}
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sock_path = calloc(len + 1, 1);
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if (!sock_path)
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return -1;
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strncpy(sock_path, value, len + 1);
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}
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vtpm2 = true;
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return 0;
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}
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void init_vtpm2(struct vmctx *ctx)
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{
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if (!sock_path) {
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WPRINTF("Invalid socket path!\n");
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return;
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}
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if (init_tpm_emulator(sock_path) < 0) {
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WPRINTF("Failed init tpm emulator!\n");
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return;
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}
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if (mmio_dev_alloc_gpa_resource32(&vtpm_crb_mmio_addr, TPM_CRB_MMIO_SIZE) < 0) {
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WPRINTF("Failed allocate gpa resorce!\n");
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return;
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}
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if (init_tpm_crb(ctx) < 0) {
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WPRINTF("Failed init tpm emulator!\n");
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}
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}
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void deinit_vtpm2(struct vmctx *ctx)
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{
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if (ctx->tpm_dev) {
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deinit_tpm_crb(ctx);
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deinit_tpm_emulator();
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}
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}
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