mirror of
https://github.com/projectacrn/acrn-hypervisor.git
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DM: RPMB virtualization
Full logic to supprot vRPMB: 1. Automatic switch between physical or simulated RPMB. But hardcode to use simulated one. 2. Parse RPMB cmd to basic APIs to: 2.1 check request frame HMAC with uos vkey 2.2 replace RPMB frame with real values. 3. RPMB partitioning for multiple UOS. It's hardcoded for coming config file support. Signed-off-by: Huang Yang <yang.huang@intel.com> Signed-off-by: Du Min <minx.du@intel.com> Acked-by: Zhu Bing <bing.zhu@intel.com>
This commit is contained in:
Huang, Yang
lijinxia
parent
e6d57f439f
commit
8db85ecb25
@ -82,6 +82,7 @@ SRCS += hw/pci/virtio/virtio_hyper_dmabuf.c
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SRCS += hw/pci/virtio/virtio_heci.c
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SRCS += hw/pci/virtio/virtio_rpmb.c
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SRCS += hw/pci/virtio/rpmb_sim.c
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SRCS += hw/pci/virtio/rpmb_backend.c
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SRCS += hw/pci/irq.c
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SRCS += hw/pci/uart.c
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SRCS += hw/pci/gvt.c
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535
devicemodel/hw/pci/virtio/rpmb_backend.c
Normal file
535
devicemodel/hw/pci/virtio/rpmb_backend.c
Normal file
@ -0,0 +1,535 @@
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/*
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* Copyright (C) 2018 Intel Corporation
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer in
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* this position and unchanged.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <string.h>
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#include <stdio.h>
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#include <stdint.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <sys/ioctl.h>
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#include <stdbool.h>
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#include "rpmb.h"
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#include "rpmb_sim.h"
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#include "vrpmb.h"
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#include "rpmb_backend.h"
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static int virtio_rpmb_debug = 1;
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#define DPRINTF(params) do { if (virtio_rpmb_debug) printf params; } while (0)
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#define WPRINTF(params) (printf params)
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static uint32_t phy_counter = 0;
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static uint32_t virt_counter = 0;
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static uint8_t rpmb_key[RPMB_KEY_32_LEN] = {0};
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static uint8_t virt_rpmb_key[RPMB_KEY_32_LEN] = {0};
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static uint16_t g_rpmb_mode = RPMB_SIM_MODE;
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static const char READ_DATA_STR[] = "read data";
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static const char WRITE_DATA_STR[] = "write data";
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//TODO: will be read from config file.
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static uint16_t get_uos_count(void)
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{
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return 1;
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}
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//TODO: will be predefined and read from config file.
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static uint16_t get_rpmb_blocks(void)
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{
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return rpmb_get_blocks();
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}
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//TODO: hardcode keybox size. It will be read from keybox header from RPMB.
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static uint16_t get_common_blocks(void)
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{
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uint16_t kb_blocks;
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uint32_t kb_size = 15872;
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kb_blocks = (kb_size + (RPMB_BLOCK_SIZE -1)) / RPMB_BLOCK_SIZE;
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//reserve for simulated rpmb + KBox header + padding
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return kb_blocks + 1 + 1 + 1;
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}
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static uint16_t get_accessible_blocks(void)
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{
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return (get_rpmb_blocks() - get_common_blocks()) /
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get_uos_count() + get_common_blocks();
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}
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/* Todo: To get the uos number, e.g. No.0 or No.1, which is
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used for calculating UOS RPMB range address.
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But this will be removed after config file is supported.
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We plan to predefine such info and save to config file.
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*/
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static uint8_t get_uos_id(void)
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{
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return (get_uos_count() - 1);
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}
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void rpmb_mode_init(uint16_t mode)
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{
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g_rpmb_mode = mode;
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DPRINTF(("%s: rpmb mode is %d\n", __func__, g_rpmb_mode));
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}
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void rpmb_counter_init(uint32_t counter)
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{
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phy_counter = counter;
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}
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static bool is_key_programmed(void)
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{
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if (g_rpmb_mode == RPMB_PHY_MODE) {
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return true;
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} else if (g_rpmb_mode == RPMB_SIM_MODE) {
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if (is_use_sim_rpmb())
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return true;
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}
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DPRINTF(("%s: rpmb mode 0x%x is unsupported\n", __func__, g_rpmb_mode));
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return false;
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}
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static uint16_t get_phy_addr(uint8_t uos_id, uint16_t vaddr)
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{
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uint16_t common_blocks = get_common_blocks();
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uint16_t accessible_blocks = get_accessible_blocks();
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if (vaddr < get_common_blocks()) {
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return vaddr;
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} else {
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return (((accessible_blocks - common_blocks) * uos_id) + vaddr);
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}
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}
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int get_virt_rpmb_key(void)
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{
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int rc = -1;
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uint8_t key[RPMB_KEY_LEN];
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rc = get_vrpmb_key(key, sizeof(key));
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if (rc == 0){
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DPRINTF(("%s: get uos key fail\n", __func__));
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}
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memcpy(virt_rpmb_key, key, RPMB_KEY_32_LEN);
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memset(key, 0, RPMB_KEY_LEN);
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return rc;
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}
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static int rpmb_replace_frame(struct rpmb_frame *frames, uint32_t frame_cnt,
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const uint8_t *key, const uint8_t *nonce, const uint32_t *write_counter,
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const uint16_t *addr, const uint16_t *block_count, const int *result, const int *req_resp)
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{
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uint32_t i;
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for (i = 0; i < frame_cnt; i++) {
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if (nonce)
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memcpy(frames[i].nonce, nonce, sizeof(frames[i].nonce));
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if (write_counter)
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frames[i].write_counter = swap32(*write_counter);
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if (addr)
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frames[i].addr = swap16(*addr);
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if (block_count)
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frames[i].block_count = swap16(*block_count);
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if (result)
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frames[i].result = swap16(*result);
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if (req_resp)
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frames[i].req_resp = swap16(*req_resp);
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}
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if (key) {
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if (rpmb_mac(key, frames, frame_cnt, frames[frame_cnt - 1].key_mac)) {
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DPRINTF(("%s: rpmb_mac failed\n", __func__));
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return -1;
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}
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}
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return 0;
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}
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static int rpmb_check_frame(const char *cmd_str, int *err,
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const struct rpmb_frame *frames, uint32_t frame_cnt,
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const uint8_t *key, const uint32_t *write_counter,
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const uint16_t *addr, const uint16_t *block_count)
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{
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uint32_t i;
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uint8_t mac[32];
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for (i = 0; i < frame_cnt; i++) {
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if (write_counter && *write_counter != swap32(frames[i].write_counter)) {
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*err = RPMB_RES_COUNT_FAILURE;
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DPRINTF(("%s: Bad write counter %u\n", cmd_str, *write_counter));
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return -1;
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}
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}
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if (addr && *addr >= get_accessible_blocks()) {
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*err = RPMB_RES_ADDR_FAILURE;
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DPRINTF(("%s: Bad addr, got %u, expected %u\n",
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cmd_str, swap16(frames[i].addr), *addr));
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return -1;
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}
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if (addr && block_count && (*addr + *block_count) > get_accessible_blocks()) {
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*err = RPMB_RES_GENERAL_FAILURE;
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DPRINTF(("%s: Bad block count %u\n",
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cmd_str, *block_count));
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return -1;
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}
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if (addr && !memcmp(cmd_str, WRITE_DATA_STR, sizeof(WRITE_DATA_STR))) {
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if (*addr < get_common_blocks()) {
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*err = RPMB_RES_WRITE_FAILURE;
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DPRINTF(("%s: Common block is readed only\n", cmd_str));
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return -1;
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}
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}
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if (key) {
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if (rpmb_mac(key, frames, frame_cnt, mac)) {
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*err = RPMB_RES_GENERAL_FAILURE;
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DPRINTF(("%s: rpmb_mac failed\n", cmd_str));
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return -1;
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}
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if (memcmp(frames[frame_cnt - 1].key_mac, mac, sizeof(mac))) {
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*err = RPMB_RES_AUTH_FAILURE;
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DPRINTF(("%s: Bad MAC\n", cmd_str));
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return -1;
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}
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}
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return 0;
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}
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static int rpmb_phy_ioctl(uint32_t ioc_cmd, void* seq_data)
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{
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int rc = -1;
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int fd;
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if (seq_data == NULL) {
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DPRINTF(("%s: seq_data is NULL\n", __func__));
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return rc;
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}
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/* open rpmb device.*/
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fd = open(RPMB_PHY_PATH_NAME, O_RDWR | O_NONBLOCK);
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if (fd < 0) {
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DPRINTF(("%s: failed to open %s.\n", __func__, RPMB_PHY_PATH_NAME));
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return fd;
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}
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/* send ioctl cmd.*/
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rc = ioctl(fd, ioc_cmd, seq_data);
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if (rc)
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DPRINTF(("%s: seq ioctl cmd failed(%d).\n", __func__, rc));
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/* close rpmb device.*/
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close(fd);
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return rc;
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}
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static int rpmb_sim_ioctl(uint32_t ioc_cmd, void* seq_data)
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{
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if (seq_data == NULL) {
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DPRINTF(("%s: seq_data is NULL\n", __func__));
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return -1;
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}
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switch (ioc_cmd) {
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case RPMB_IOC_REQ_CMD:
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case RPMB_IOC_SEQ_CMD:
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return rpmb_sim_send(seq_data);
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default:
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DPRINTF(("%s: ioctl 0x%x is unsupported\n", __func__, ioc_cmd));
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return -1;
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}
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}
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static int rpmb_virt_ioctl(uint32_t ioc_cmd, void* seq_data)
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{
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if (g_rpmb_mode == RPMB_PHY_MODE) {
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return rpmb_phy_ioctl(ioc_cmd, seq_data);
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} else if (g_rpmb_mode == RPMB_SIM_MODE) {
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return rpmb_sim_ioctl(ioc_cmd, seq_data);
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}
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DPRINTF(("%s: rpmb mode 0x%x is unsupported\n", __func__, g_rpmb_mode));
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return -1;
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}
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static int rpmb_virt_write(uint32_t ioc_cmd, void* seq_data,
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struct rpmb_frame* in_frame, uint32_t in_cnt,
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struct rpmb_frame* out_frame, uint32_t out_cnt)
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{
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int err = RPMB_RES_WRITE_FAILURE;
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int resp = RPMB_RESP_DATA_WRITE;
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uint16_t vaddr;
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uint16_t paddr;
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uint16_t block_count;
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uint8_t uos_id;
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__u16 rpmb_result = 0;
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int rc;
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DPRINTF(("enter to %s\n", __func__));
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if (in_cnt == 0 || in_frame == NULL || seq_data == NULL) {
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DPRINTF(("%s: in_frame, in_cnt or seq_data is not available.\n", __func__));
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return -1;
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}
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if (out_cnt > 0 && out_frame != NULL) {
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memset(out_frame, 0, out_cnt * RPMB_FRAME_SIZE);
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} else {
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DPRINTF(("%s: vrpmb must be aware of the result in out_frame.\n", __func__));
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return -1;
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}
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uos_id = get_uos_id();
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vaddr = swap16(in_frame->addr);
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block_count = in_cnt;
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if (rpmb_check_frame(WRITE_DATA_STR, &err, in_frame, in_cnt,
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virt_rpmb_key, &virt_counter, &vaddr, &block_count))
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goto out;
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paddr = get_phy_addr(uos_id, vaddr);
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if (rpmb_replace_frame(in_frame, in_cnt, rpmb_key, NULL,
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&phy_counter, &paddr, NULL, NULL, NULL))
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{
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err = RPMB_RES_GENERAL_FAILURE;
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goto out;
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}
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if (rpmb_virt_ioctl(ioc_cmd, seq_data)) {
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DPRINTF(("%s: rpmb virt ioctl failed.\n", __func__));
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return -1;
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}
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if (out_frame->result == swap16(RPMB_RES_COUNT_FAILURE)) {
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memset(out_frame, 0, out_cnt * RPMB_FRAME_SIZE);
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rc = rpmb_get_counter(g_rpmb_mode, rpmb_key, &phy_counter, &rpmb_result);
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if (rc) {
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DPRINTF(("%s: rpmb_get_counter failed(0x%x)\n", __func__, rpmb_result));
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return -1;
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}
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/* Since phy_counter has changed, so we have to generate mac again*/
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if (rpmb_replace_frame(in_frame, in_cnt, rpmb_key, NULL,
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&phy_counter, &paddr, NULL, NULL, NULL))
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{
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err = RPMB_RES_GENERAL_FAILURE;
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goto out;
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}
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if (rpmb_virt_ioctl(ioc_cmd, seq_data)) {
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DPRINTF(("%s: rpmb virt retry ioctl failed.\n", __func__));
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return -1;
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}
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}
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|
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if (out_frame->result == RPMB_RES_OK) {
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phy_counter++;
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virt_counter++;
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DPRINTF(("%s: rpmb virt ioctl result is ok.\n", __func__));
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}
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rpmb_replace_frame(out_frame, out_cnt, virt_rpmb_key, NULL,
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&virt_counter, &vaddr, NULL, NULL, NULL);
|
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return 0;
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out:
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rpmb_replace_frame(out_frame, out_cnt, virt_rpmb_key, in_frame[0].nonce,
|
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&virt_counter, &vaddr, &block_count, &err, &resp);
|
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|
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return 0;
|
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}
|
||||
|
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static int rpmb_virt_read(uint32_t ioc_cmd, void* seq_data,
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struct rpmb_frame* in_frame, uint32_t in_cnt,
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struct rpmb_frame* out_frame, uint32_t out_cnt)
|
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{
|
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int err = RPMB_RES_READ_FAILURE;
|
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int resp = RPMB_RESP_DATA_READ;
|
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uint16_t vaddr;
|
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uint16_t paddr;
|
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uint16_t block_count;
|
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uint8_t uos_id;
|
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|
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DPRINTF(("enter to %s\n", __func__));
|
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if (in_cnt == 0 || in_frame == NULL) {
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DPRINTF(("%s: in_frame, in_cnt or seq_data is not available\n", __func__));
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return -1;
|
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}
|
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|
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if (out_cnt == 0 || out_frame == NULL) {
|
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DPRINTF(("%s: out_frame or out_cnt is not available\n", __func__));
|
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return -1;
|
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}
|
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|
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uos_id = get_uos_id();
|
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|
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memset(out_frame, 0, out_cnt * RPMB_FRAME_SIZE);
|
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vaddr = swap16(in_frame->addr);
|
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block_count = out_cnt;
|
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|
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if (rpmb_check_frame(READ_DATA_STR, &err, in_frame,
|
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in_cnt, NULL, NULL, &vaddr, &block_count))
|
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goto out;
|
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|
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paddr = get_phy_addr(uos_id, vaddr);
|
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if (rpmb_replace_frame(in_frame, in_cnt, NULL,
|
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NULL, NULL, &paddr, NULL, NULL, NULL )) {
|
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err = RPMB_RES_GENERAL_FAILURE;
|
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goto out;
|
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}
|
||||
|
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if (rpmb_virt_ioctl(ioc_cmd, seq_data)) {
|
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DPRINTF(("%s: rpmb ioctl failed\n", __func__));
|
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return -1;
|
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}
|
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|
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rpmb_replace_frame(out_frame, out_cnt, virt_rpmb_key, NULL,
|
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NULL, &vaddr, NULL, NULL, NULL);
|
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|
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return 0;
|
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out:
|
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rpmb_replace_frame(out_frame, out_cnt, virt_rpmb_key, in_frame[0].nonce,
|
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NULL, &vaddr, &block_count, &err, &resp);
|
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|
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return 0;
|
||||
}
|
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|
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static int rpmb_virt_get_counter(struct rpmb_frame* in_frame, uint32_t in_cnt,
|
||||
struct rpmb_frame* out_frame, uint32_t out_cnt)
|
||||
{
|
||||
int err = RPMB_RES_OK;
|
||||
int resp = RPMB_RESP_GET_COUNTER;
|
||||
|
||||
DPRINTF(("enter to %s\n", __func__));
|
||||
|
||||
if (in_cnt == 0 || in_frame == NULL) {
|
||||
DPRINTF(("%s: in_frame or in_cnt is not available\n", __func__));
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (out_cnt == 0 || out_frame == NULL) {
|
||||
DPRINTF(("%s: out_frame or out_cnt is not available\n", __func__));
|
||||
return -1;
|
||||
}
|
||||
|
||||
memset(out_frame, 0, out_cnt * RPMB_FRAME_SIZE);
|
||||
|
||||
if (!is_key_programmed()) {
|
||||
DPRINTF(("%s: rpmb key is not programmed\n", __func__));
|
||||
err = RPMB_RES_NO_AUTH_KEY;
|
||||
goto out;
|
||||
}
|
||||
|
||||
rpmb_replace_frame(out_frame, out_cnt, virt_rpmb_key,
|
||||
in_frame[0].nonce, &virt_counter, NULL, NULL, &err, &resp);
|
||||
|
||||
return 0;
|
||||
|
||||
out:
|
||||
rpmb_replace_frame(out_frame, out_cnt, virt_rpmb_key,
|
||||
in_frame[0].nonce, NULL, NULL, NULL, &err, &resp);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int rpmb_handler(uint32_t cmd, void *r)
|
||||
{
|
||||
int rc = -1;
|
||||
uint16_t i;
|
||||
uint32_t write_cnt = 0;
|
||||
uint32_t rel_write_cnt = 0;
|
||||
uint32_t read_cnt = 0;
|
||||
struct rpmb_frame *frame_write = NULL;
|
||||
struct rpmb_frame *frame_rel_write = NULL;
|
||||
struct rpmb_frame *frame_read = NULL;
|
||||
struct rpmb_ioc_cmd *ioc_cmd = NULL;
|
||||
struct rpmb_ioc_seq_data *iseq = r;
|
||||
|
||||
if (r == NULL) {
|
||||
DPRINTF(("%s: rpmb iocctl seq data is NULL\n", __func__));
|
||||
goto err_response;
|
||||
}
|
||||
|
||||
for (i = 0; i < iseq->h.num_of_cmds; i++) {
|
||||
ioc_cmd = (struct rpmb_ioc_cmd *)(&iseq->cmd[i]);
|
||||
if (ioc_cmd->flags == 0) {
|
||||
frame_read = (struct rpmb_frame *)ioc_cmd->frames_ptr;
|
||||
read_cnt = ioc_cmd->nframes;
|
||||
} else if (ioc_cmd->flags == RPMB_F_WRITE) {
|
||||
frame_write = (struct rpmb_frame *)ioc_cmd->frames_ptr;
|
||||
write_cnt = ioc_cmd->nframes;
|
||||
} else if (ioc_cmd->flags == (RPMB_F_WRITE | RPMB_F_REL_WRITE)) {
|
||||
frame_rel_write = (struct rpmb_frame *)ioc_cmd->frames_ptr;
|
||||
rel_write_cnt = ioc_cmd->nframes;
|
||||
} else {
|
||||
DPRINTF(("%s: rpmb_ioc_cmd is invalid in the rpmb_ioc_seq_data\n", __func__));
|
||||
goto err_response;
|
||||
}
|
||||
}
|
||||
|
||||
if (rel_write_cnt) {
|
||||
if (frame_rel_write[0].req_resp == swap16(RPMB_REQ_DATA_WRITE)) {
|
||||
if (write_cnt && (frame_write->req_resp == swap16(RPMB_REQ_RESULT_READ)))
|
||||
rc = rpmb_virt_write(cmd, r, frame_rel_write,
|
||||
rel_write_cnt, frame_read, read_cnt);
|
||||
else
|
||||
rc = rpmb_virt_write(cmd, r, frame_rel_write, rel_write_cnt, NULL, 0);
|
||||
} else if (frame_rel_write[0].req_resp == swap16(RPMB_REQ_PROGRAM_KEY)) {
|
||||
DPRINTF(("%s: rpmb grogram key is unsupported\n", __func__));
|
||||
goto err_response;
|
||||
} else {
|
||||
DPRINTF(("%s: rpmb ioctl frame is invalid\n", __func__));
|
||||
goto err_response;
|
||||
}
|
||||
} else if (write_cnt) {
|
||||
if (frame_write[0].req_resp == swap16(RPMB_REQ_DATA_READ)) {
|
||||
rc = rpmb_virt_read(cmd, r, frame_write, 1, frame_read, read_cnt);
|
||||
} else if (frame_write[0].req_resp == swap16(RPMB_REQ_GET_COUNTER)) {
|
||||
rc = rpmb_virt_get_counter(frame_write, 1, frame_read, 1);
|
||||
} else {
|
||||
DPRINTF(("%s: rpmb get counter frame is invalid\n", __func__));
|
||||
goto err_response;
|
||||
}
|
||||
} else {
|
||||
DPRINTF(("%s: rpmb ioctl frame is invalid\n", __func__));
|
||||
goto err_response;
|
||||
}
|
||||
|
||||
return rc;
|
||||
|
||||
err_response:
|
||||
return -1;
|
||||
}
|
||||
@ -19,7 +19,7 @@
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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
|
||||
* 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)
|
||||
@ -31,7 +31,7 @@
|
||||
* Create virtio rpmb backend VBS-U. This component will work with RPMB FE
|
||||
* driver to provide one communication channel between UOS and SOS.
|
||||
* The message from RPMB daemon in Android will be transferred over the
|
||||
* channel and finally arrived RPMB physical driver on SOS kernel.
|
||||
* channel and finally arrived RPMB physical driver on SOS kernel.
|
||||
*
|
||||
*/
|
||||
|
||||
@ -56,16 +56,18 @@
|
||||
#include <fcntl.h>
|
||||
#include <sys/ioctl.h>
|
||||
#include <linux/types.h>
|
||||
#include <rpmb.h>
|
||||
#include "rpmb.h"
|
||||
#include "rpmb_sim.h"
|
||||
#include "rpmb_backend.h"
|
||||
|
||||
#define VIRTIO_RPMB_RINGSZ 64
|
||||
#define ADDR_NOT_PRESENT -2
|
||||
|
||||
static int virtio_rpmb_debug;
|
||||
static int virtio_rpmb_debug = 1;
|
||||
#define DPRINTF(params) do { if (virtio_rpmb_debug) printf params; } while (0)
|
||||
#define WPRINTF(params) (printf params)
|
||||
|
||||
#define SEQ_CMD_MAX 3 /*support up to 3 cmds*/
|
||||
|
||||
static __u16 rpmb_block_count = 0;
|
||||
/*
|
||||
* virtio-rpmb struct
|
||||
*/
|
||||
@ -236,11 +238,373 @@ virtio_rpmb_map_seq_frames(struct iovec *iov)
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
rpmb_check_mac(__u8 *key, struct rpmb_frame *frames, __u8 frame_cnt)
|
||||
{
|
||||
int rc = -1;
|
||||
__u8 mac[32];
|
||||
|
||||
if (!key || !frames) {
|
||||
DPRINTF(("key or frames is NULL\n"));
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (frame_cnt == 0) {
|
||||
DPRINTF(("frame count is zero\n"));
|
||||
return -1;
|
||||
}
|
||||
|
||||
rc = rpmb_mac(key, frames, frame_cnt, mac);
|
||||
if (rc < 0) {
|
||||
DPRINTF(("rpmb_calc_mac failed\n"));
|
||||
return rc;
|
||||
}
|
||||
|
||||
if (memcmp(mac, frames[frame_cnt - 1].key_mac, 32)) {
|
||||
DPRINTF(("rpmb mac mismatch:\n"));
|
||||
return -1;
|
||||
}
|
||||
|
||||
return rc;
|
||||
}
|
||||
|
||||
static int
|
||||
rpmb_check_response(const char *cmd_str, enum rpmb_response response_type,
|
||||
const struct rpmb_frame *frames, __u32 frame_cnt,
|
||||
const __u8 *key, const __u8 *nonce, const __u16 *addr)
|
||||
{
|
||||
__u32 i;
|
||||
__u8 mac[32];
|
||||
|
||||
for (i = 0; i < frame_cnt; i++) {
|
||||
if (swap16(frames[i].req_resp) != response_type) {
|
||||
DPRINTF(("%s: Bad response type, 0x%x, expected 0x%x\n",
|
||||
cmd_str, swap16(frames[i].req_resp), response_type));
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (swap16(frames[i].result) != RPMB_RES_OK) {
|
||||
if (swap16(frames[i].result) == RPMB_RES_ADDR_FAILURE) {
|
||||
DPRINTF(("%s: Addr failure, %u\n", cmd_str, swap16(frames[i].addr)));
|
||||
return ADDR_NOT_PRESENT;
|
||||
}
|
||||
DPRINTF(("%s: Bad result, 0x%x\n", cmd_str, swap16(frames[i].result)));
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (nonce && memcmp(frames[i].nonce, nonce, sizeof(frames[i].nonce))) {
|
||||
DPRINTF(("%s: Bad nonce\n", cmd_str));
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (addr && *addr != swap16(frames[i].addr)) {
|
||||
DPRINTF(("%s: Bad addr, got %u, expected %u\n",
|
||||
cmd_str, swap16(frames[i].addr), *addr));
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
|
||||
if (key) {
|
||||
if (rpmb_mac(key, frames, frame_cnt, mac)) {
|
||||
DPRINTF(("%s: rpmb_mac failed\n", cmd_str));
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (memcmp(frames[frame_cnt - 1].key_mac, mac, sizeof(mac))) {
|
||||
DPRINTF(("%s: Bad MAC\n", cmd_str));
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int
|
||||
rpmb_get_counter(__u8 mode, __u8 *key, __u32 *counter, __u16 *result)
|
||||
{
|
||||
int rc;
|
||||
int fd;
|
||||
struct {
|
||||
struct rpmb_ioc_seq_cmd h;
|
||||
struct rpmb_ioc_cmd cmd[3];
|
||||
} iseq = {};
|
||||
struct rpmb_frame frame_in;
|
||||
struct rpmb_frame frame_out;
|
||||
|
||||
if (!key || !counter || !result) {
|
||||
DPRINTF(("key, counter or result is NULL!\n"));
|
||||
return -1;
|
||||
}
|
||||
|
||||
frame_in.req_resp = swap16(RPMB_REQ_GET_COUNTER);
|
||||
|
||||
iseq.cmd[0].flags = RPMB_F_WRITE;
|
||||
iseq.cmd[0].nframes = 1;
|
||||
iseq.cmd[0].frames_ptr = (__aligned_u64)(intptr_t)(&frame_in);
|
||||
iseq.cmd[1].flags = 0;
|
||||
iseq.cmd[1].nframes = 1;
|
||||
iseq.cmd[1].frames_ptr = (__aligned_u64)(intptr_t)(&frame_out);
|
||||
iseq.h.num_of_cmds = 2;
|
||||
|
||||
if (mode == RPMB_PHY_MODE) {
|
||||
/* open rpmb device.*/
|
||||
fd = open(RPMB_PHY_PATH_NAME, O_RDWR | O_NONBLOCK);
|
||||
if (fd < 0) {
|
||||
DPRINTF(("failed to open %s.\n", RPMB_PHY_PATH_NAME));
|
||||
return fd;
|
||||
}
|
||||
|
||||
/* send ioctl cmd.*/
|
||||
rc = ioctl(fd, RPMB_IOC_SEQ_CMD, &iseq);
|
||||
|
||||
/* close rpmb device.*/
|
||||
close(fd);
|
||||
|
||||
if (rc) {
|
||||
DPRINTF(("get counter for physical rpmb failed.\n"));
|
||||
return rc;
|
||||
}
|
||||
} else {
|
||||
rc = rpmb_sim_send(&iseq);
|
||||
if (rc) {
|
||||
DPRINTF(("get counter for simulated rpmb failed.\n"));
|
||||
return rc;
|
||||
}
|
||||
}
|
||||
|
||||
*result = swap16(frame_out.result);
|
||||
if (*result != RPMB_RES_OK ) {
|
||||
DPRINTF(("get rpmb counter failed(0x%x).\n", *result));
|
||||
return -1;
|
||||
}
|
||||
|
||||
rc = rpmb_check_mac(key, &frame_out, 1);
|
||||
if (rc) {
|
||||
DPRINTF(("rpmb counter check mac failed.\n"));
|
||||
return rc;
|
||||
}
|
||||
|
||||
*counter = swap32(frame_out.write_counter);
|
||||
DPRINTF(("rpmb counter value: 0x%x.\n", *counter));
|
||||
|
||||
return rc;
|
||||
}
|
||||
|
||||
/* TODO: this function will be used for AttKB */
|
||||
#if 0
|
||||
static int
|
||||
rpmb_write_block(__u8 mode, __u8 *key, __u16 addr, void *buf, __u32 count)
|
||||
{
|
||||
int rc;
|
||||
int fd;
|
||||
__u32 i;
|
||||
__u32 write_counter;
|
||||
__u16 result;
|
||||
struct {
|
||||
struct rpmb_ioc_seq_cmd h;
|
||||
struct rpmb_ioc_cmd cmd[3];
|
||||
} iseq = {};
|
||||
struct rpmb_frame frame_write;
|
||||
struct rpmb_frame frame_rel[count];
|
||||
struct rpmb_frame frame_read;
|
||||
|
||||
if (!buf || count == 0) {
|
||||
DPRINTF(("%s:buf or count is invalid!\n", __func__));
|
||||
return -1;
|
||||
}
|
||||
|
||||
rc = rpmb_get_counter(mode, key, &write_counter, &result);
|
||||
if (rc) {
|
||||
DPRINTF(("%s: virtio_rpmb_get_counter failed\n", __func__));
|
||||
return -1;
|
||||
}
|
||||
|
||||
/*fill write frame*/
|
||||
frame_write.addr = swap16(addr);
|
||||
frame_write.req_resp = swap16(RPMB_REQ_RESULT_READ);
|
||||
frame_write.write_counter = swap32(write_counter);
|
||||
|
||||
/*fill rel write frame*/
|
||||
for (i = 0; i < count; i++) {
|
||||
memset(&frame_rel[i], 0, sizeof(frame_rel[i]));
|
||||
memcpy(frame_rel[i].data, buf + i * sizeof(frame_rel[i].data), sizeof(frame_rel[i].data));
|
||||
frame_rel[i].write_counter = swap32(write_counter);
|
||||
frame_rel[i].addr = swap16(addr);
|
||||
frame_rel[i].block_count = swap16(count);
|
||||
frame_rel[i].req_resp = swap16(RPMB_REQ_DATA_WRITE);
|
||||
}
|
||||
|
||||
/*generate rel frame mac*/
|
||||
if (rpmb_mac(key, frame_rel, count, frame_rel[count - 1].key_mac)) {
|
||||
DPRINTF(("%s: rel frame rpmb mac failed\n", __func__));
|
||||
return -1;
|
||||
}
|
||||
|
||||
/*fill io cmd*/
|
||||
iseq.cmd[0].flags = RPMB_F_WRITE | RPMB_F_REL_WRITE;
|
||||
iseq.cmd[0].nframes = count;
|
||||
iseq.cmd[0].frames_ptr = (__aligned_u64)(intptr_t)(frame_rel);
|
||||
iseq.cmd[1].flags = RPMB_F_WRITE;
|
||||
iseq.cmd[1].nframes = 1;
|
||||
iseq.cmd[1].frames_ptr = (__aligned_u64)(intptr_t)(&frame_write);
|
||||
iseq.cmd[2].flags = 0;
|
||||
iseq.cmd[2].nframes = 1;
|
||||
iseq.cmd[2].frames_ptr = (__aligned_u64)(intptr_t)(&frame_read);
|
||||
iseq.h.num_of_cmds = 3;
|
||||
|
||||
if (mode == RPMB_PHY_MODE) {
|
||||
/* open rpmb device.*/
|
||||
fd = open(RPMB_PHY_PATH_NAME, O_RDWR | O_NONBLOCK);
|
||||
if (fd < 0) {
|
||||
DPRINTF(("failed to open %s for read blocks.\n", RPMB_PHY_PATH_NAME));
|
||||
return fd;
|
||||
}
|
||||
|
||||
/* send ioctl cmd.*/
|
||||
rc = ioctl(fd, RPMB_IOC_SEQ_CMD, &iseq);
|
||||
|
||||
/* close rpmb device.*/
|
||||
close(fd);
|
||||
|
||||
if (rc) {
|
||||
DPRINTF(("read blocks for physical rpmb failed.\n"));
|
||||
return rc;
|
||||
}
|
||||
} else {
|
||||
rc = rpmb_sim_send(&iseq);
|
||||
if (rc) {
|
||||
DPRINTF(("read blocks for simulated rpmb failed.\n"));
|
||||
return rc;
|
||||
}
|
||||
}
|
||||
|
||||
rc = rpmb_check_response("write blocks", RPMB_RESP_DATA_WRITE,
|
||||
&frame_read, 1, key, NULL, &addr);
|
||||
return rc;
|
||||
}
|
||||
#endif
|
||||
|
||||
static int
|
||||
rpmb_read_block(__u8 mode, __u8 *key, __u16 addr, void *buf, __u32 count)
|
||||
{
|
||||
int rc;
|
||||
int fd;
|
||||
__u8 *bufp;
|
||||
__u32 i;
|
||||
struct {
|
||||
struct rpmb_ioc_seq_cmd h;
|
||||
struct rpmb_ioc_cmd cmd[3];
|
||||
} iseq = {};
|
||||
struct rpmb_frame frame_in;
|
||||
struct rpmb_frame frame_out[count];
|
||||
|
||||
if (!buf || count == 0) {
|
||||
DPRINTF(("buf or count is invalid!.\n"));
|
||||
return -1;
|
||||
}
|
||||
|
||||
frame_in.addr = swap16(addr);
|
||||
frame_in.req_resp = swap16(RPMB_REQ_DATA_READ);
|
||||
|
||||
iseq.cmd[0].flags = RPMB_F_WRITE;
|
||||
iseq.cmd[0].nframes = 1;
|
||||
iseq.cmd[0].frames_ptr = (__aligned_u64)(intptr_t)(&frame_in);
|
||||
iseq.cmd[1].flags = 0;
|
||||
iseq.cmd[1].nframes = count;
|
||||
iseq.cmd[1].frames_ptr = (__aligned_u64)(intptr_t)(frame_out);
|
||||
iseq.h.num_of_cmds = 2;
|
||||
|
||||
if (mode == RPMB_PHY_MODE) {
|
||||
/* open rpmb device.*/
|
||||
fd = open(RPMB_PHY_PATH_NAME, O_RDWR | O_NONBLOCK);
|
||||
if (fd < 0) {
|
||||
DPRINTF(("failed to open %s for read blocks.\n", RPMB_PHY_PATH_NAME));
|
||||
return fd;
|
||||
}
|
||||
|
||||
/* send ioctl cmd.*/
|
||||
rc = ioctl(fd, RPMB_IOC_SEQ_CMD, &iseq);
|
||||
|
||||
/* close rpmb device.*/
|
||||
close(fd);
|
||||
|
||||
if (rc) {
|
||||
DPRINTF(("read blocks for physical rpmb failed.\n"));
|
||||
return rc;
|
||||
}
|
||||
} else {
|
||||
rc = rpmb_sim_send(&iseq);
|
||||
if (rc) {
|
||||
DPRINTF(("read blocks for simulated rpmb failed.\n"));
|
||||
return rc;
|
||||
}
|
||||
}
|
||||
|
||||
rc = rpmb_check_response("read blocks", RPMB_RESP_DATA_READ,
|
||||
frame_out, count, key, NULL, &addr);
|
||||
|
||||
if (rc)
|
||||
return rc;
|
||||
|
||||
for (bufp = buf, i = 0; i < count; i++, bufp += sizeof(frame_out[i].data))
|
||||
memcpy(bufp, frame_out[i].data, sizeof(frame_out[i].data));
|
||||
|
||||
return rc;
|
||||
}
|
||||
|
||||
static int
|
||||
rpmb_check(__u8 mode, __u8 *key, __u16 block)
|
||||
{
|
||||
int rc;
|
||||
__u8 tmp[RPMB_BLOCK_SIZE];
|
||||
|
||||
rc = rpmb_read_block(mode, key, block, tmp, 1);
|
||||
DPRINTF(("check rpmb_block %d, ret %d\n", block, rc));
|
||||
|
||||
return rc;
|
||||
}
|
||||
|
||||
static __u32
|
||||
rpmb_search_size(__u8 mode, __u8 *key, __u16 hint)
|
||||
{
|
||||
int ret;
|
||||
__u32 low = 0;
|
||||
__u16 high = ~0;
|
||||
__u16 curr = hint - 1;
|
||||
|
||||
while (low <= high) {
|
||||
ret = rpmb_check(mode, key, curr);
|
||||
switch (ret) {
|
||||
case 0:
|
||||
low = curr + 1;
|
||||
break;
|
||||
case ADDR_NOT_PRESENT:
|
||||
high = curr - 1;
|
||||
break;
|
||||
default:
|
||||
return 0;
|
||||
};
|
||||
if (ret || curr != hint) {
|
||||
curr = low + (high - low) / 2;
|
||||
hint = curr;
|
||||
} else {
|
||||
curr = curr + 1;
|
||||
}
|
||||
}
|
||||
assert ((__u32)high + 1 == low);
|
||||
return low;
|
||||
}
|
||||
|
||||
__u16
|
||||
rpmb_get_blocks(void)
|
||||
{
|
||||
return rpmb_block_count;
|
||||
}
|
||||
|
||||
static int
|
||||
virtio_rpmb_seq_handler(struct virtio_rpmb *rpmb, struct iovec *iov)
|
||||
{
|
||||
struct virtio_rpmb_ioctl_cmd *ioc = NULL;
|
||||
int fd;
|
||||
void *pdata;
|
||||
int rc;
|
||||
|
||||
@ -268,22 +632,10 @@ virtio_rpmb_seq_handler(struct virtio_rpmb *rpmb, struct iovec *iov)
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* open rpmb device.*/
|
||||
rc = open("/dev/rpmb0", O_RDWR | O_NONBLOCK);
|
||||
if (rc < 0) {
|
||||
DPRINTF(("failed to open /dev/rpmb0.\n"));
|
||||
return rc;
|
||||
}
|
||||
fd = rc;
|
||||
|
||||
/* send ioctl cmd.*/
|
||||
rc = ioctl(fd, ioc->cmd, pdata);
|
||||
rc = rpmb_handler(ioc->cmd, pdata);
|
||||
if (rc)
|
||||
DPRINTF(("seq ioctl cmd failed(%d).\n", rc));
|
||||
|
||||
/* close rpmb device.*/
|
||||
close(fd);
|
||||
|
||||
return rc;
|
||||
}
|
||||
|
||||
@ -292,7 +644,7 @@ virtio_rpmb_notify(void *base, struct virtio_vq_info *vq)
|
||||
{
|
||||
struct iovec iov;
|
||||
int len;
|
||||
uint16_t idx;
|
||||
__u16 idx;
|
||||
struct virtio_rpmb *rpmb = (struct virtio_rpmb *)base;
|
||||
struct virtio_rpmb_ioctl_cmd *ioc;
|
||||
|
||||
@ -358,6 +710,9 @@ virtio_rpmb_init(struct vmctx *ctx, struct pci_vdev *dev, char *opts)
|
||||
struct virtio_rpmb *rpmb;
|
||||
pthread_mutexattr_t attr;
|
||||
int rc;
|
||||
__u8 key[RPMB_KEY_32_LEN];
|
||||
__u32 rpmb_counter = 0;
|
||||
__u16 rpmb_result = 0;
|
||||
|
||||
rpmb = calloc(1, sizeof(struct virtio_rpmb));
|
||||
if (!rpmb) {
|
||||
@ -411,10 +766,51 @@ virtio_rpmb_init(struct vmctx *ctx, struct pci_vdev *dev, char *opts)
|
||||
|
||||
virtio_set_io_bar(&rpmb->base, 0);
|
||||
|
||||
rc = get_virt_rpmb_key();
|
||||
if (rc == 0) {
|
||||
DPRINTF(("%s: get uos key failed!\n", __func__));
|
||||
goto out;
|
||||
}
|
||||
|
||||
// TODO: keep it for self-adaption rpmb mode
|
||||
/*rc = rpmb_get_counter(RPMB_PHY_MODE, key, &rpmb_counter, &rpmb_result);
|
||||
if (rc) {
|
||||
DPRINTF(("rpmb_get_counter failed\n"));
|
||||
goto out;
|
||||
}*/
|
||||
|
||||
memset(key, 0, RPMB_KEY_32_LEN);
|
||||
/*TODO: hardcode rpmb mode to RPMB_SIM_MODE*/
|
||||
rpmb_result = RPMB_RES_GENERAL_FAILURE;
|
||||
if (rpmb_result == RPMB_RES_OK) {
|
||||
rpmb_mode_init(RPMB_PHY_MODE);
|
||||
rpmb_block_count = rpmb_search_size(RPMB_PHY_MODE, key, 0);
|
||||
} else {
|
||||
rc = rpmb_sim_key_init(key);
|
||||
if (rc) {
|
||||
DPRINTF(("rpmb_sim_key_init failed!\n"));
|
||||
goto out;
|
||||
}
|
||||
|
||||
rc = rpmb_get_counter(RPMB_SIM_MODE, key, &rpmb_counter, &rpmb_result);
|
||||
if (rc) {
|
||||
DPRINTF(("rpmb_get_counter failed\n"));
|
||||
goto out;
|
||||
}
|
||||
|
||||
rpmb_mode_init(RPMB_SIM_MODE);
|
||||
|
||||
rpmb_block_count = rpmb_search_size(RPMB_SIM_MODE, key, 0);
|
||||
}
|
||||
|
||||
memset(key, 0, RPMB_KEY_32_LEN);
|
||||
rpmb_counter_init(rpmb_counter);
|
||||
|
||||
return 0;
|
||||
|
||||
out:
|
||||
free(rpmb);
|
||||
memset(key, 0, RPMB_KEY_32_LEN);
|
||||
return rc;
|
||||
}
|
||||
|
||||
|
||||
38
devicemodel/include/rpmb_backend.h
Normal file
38
devicemodel/include/rpmb_backend.h
Normal file
@ -0,0 +1,38 @@
|
||||
/*
|
||||
* Copyright (c) 2018 Intel Corporation
|
||||
* 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 in
|
||||
* this position and unchanged.
|
||||
* 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 AND CONTRIBUTORS ``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.
|
||||
*/
|
||||
|
||||
#ifndef __RPMB_BACKEND_H__
|
||||
#define __RPMB_BACKEND_H__
|
||||
|
||||
#define RPMB_KEY_32_LEN 32
|
||||
|
||||
void rpmb_mode_init(uint16_t mode);
|
||||
void rpmb_counter_init(uint32_t counter);
|
||||
int rpmb_handler(uint32_t ioc_cmd, void *r);
|
||||
int get_virt_rpmb_key(void);
|
||||
|
||||
#endif /* __RPMB_BACKEND_H__ */
|
||||
Loading…
Reference in New Issue
Block a user