mirror of
https://github.com/projectacrn/acrn-hypervisor.git
synced 2025-09-15 22:09:06 +00:00
DM: Enable vsbl boot path.
There are two things here: 1. Enable basic vsbl boot functionality. 2. add long option to DM to specific vsbl file. So DM could choice to boot guest with vsbl. It's hard to find a suitable short option. So only long option is supported for vsbl file name option. If long option "--vsbl='vsbl_file_name'" is given in DM commandline, the "vsbl_file_name" will be loaded by DM first and running. vsbl will be response to lead guest to next boot stage. Signed-off-by: Yin Fengwei <fengwei.yin@intel.com> Acked-by: Anthony Xu <anthony.xu@intel.com>
This commit is contained in:
Yin Fengwei
Jack Ren
287
devicemodel/core/sw_load_vsbl.c
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287
devicemodel/core/sw_load_vsbl.c
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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.
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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 NETAPP, INC ``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 NETAPP, INC 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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*/
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#include <string.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <assert.h>
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#include <stdbool.h>
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#include <stdint.h>
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#include "dm.h"
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#include "acrn_common.h"
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#include "vmmapi.h"
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#include "sw_load.h"
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#include "acpi.h"
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/* If the vsbl is loaded by DM, the UOS memory layout will be like:
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*
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* | ... |
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* +--------------------------------------------------+
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* | offset: 0xf2400 (ACPI table) |
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* +--------------------------------------------------+
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* | ... |
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* +--------------------------------------------------+
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* | offset: 16MB (vsbl image) |
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* +--------------------------------------------------+
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* | ... |
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* +--------------------------------------------------+
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* | offset: lowmem - 16K (partition blob) |
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* +--------------------------------------------------+
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* | offset: lowmem - 12K (e820 table) |
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* +--------------------------------------------------+
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* | offset: lowmem - 8K (boot_args_address) |
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* +--------------------------------------------------+
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* | offset: lowmem - 6K (vsbl entry address) |
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* +--------------------------------------------------+
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* | offset: lowmem - 4K (config_page with e820 table)|
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* +--------------------------------------------------+
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*/
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/* Check default e820 table in sw_load_common.c for info about ctx->lowmem */
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#define CONFIGPAGE_OFF(ctx) ((ctx)->lowmem - 4*KB)
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#define VSBL_ENTRY_OFF(ctx) ((ctx)->lowmem - 6*KB)
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#define BOOTARGS_OFF(ctx) ((ctx)->lowmem - 8*KB)
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#define E820_TABLE_OFF(ctx) ((ctx)->lowmem - 12*KB)
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#define GUEST_PART_INFO_OFF(ctx) ((ctx)->lowmem - 16*KB)
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/* vsbl real entry is saved in the first 4 bytes of vsbl image */
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#define VSBL_OFF(ctx) (16*MB)
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struct vsbl_para {
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uint64_t e820_table_address;
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uint64_t e820_entries;
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uint64_t acpi_table_address;
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uint64_t acpi_table_size;
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uint64_t guest_part_info_address;
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uint64_t guest_part_info_size;
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uint64_t vsbl_address;
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uint64_t vsbl_size;
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uint64_t bootargs_address;
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uint32_t trusty_enabled;
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uint32_t key_info_lock;
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uint32_t watchdog_reset;
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uint32_t boot_device_address;
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};
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static char guest_part_info_path[STR_LEN];
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static int guest_part_info_size;
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static bool with_guest_part_info;
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static char vsbl_path[STR_LEN];
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static int vsbl_size;
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static int boot_blk_bdf;
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#define LOW_8BIT(x) ((x) & 0xFF)
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void
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vsbl_set_bdf(int bnum, int snum, int fnum)
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{
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boot_blk_bdf = (LOW_8BIT(bnum) << 16) | (LOW_8BIT(snum) << 8) |
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LOW_8BIT(fnum);
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}
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int
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acrn_parse_guest_part_info(char *arg)
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{
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int len = strlen(arg);
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if (len < STR_LEN) {
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strncpy(guest_part_info_path, arg, len);
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guest_part_info_path[len] = '\0';
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assert(check_image(guest_part_info_path) == 0);
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with_guest_part_info = true;
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printf("SW_LOAD: get partition blob path %s\n",
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guest_part_info_path);
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return 0;
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} else
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return -1;
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}
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static int
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acrn_prepare_guest_part_info(struct vmctx *ctx)
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{
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FILE *fp;
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int len, read;
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fp = fopen(guest_part_info_path, "r");
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if (fp == NULL) {
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fprintf(stderr,
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"SW_LOAD ERR: could not open partition blob %s\n",
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guest_part_info_path);
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return -1;
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}
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fseek(fp, 0, SEEK_END);
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len = ftell(fp);
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if ((len + GUEST_PART_INFO_OFF(ctx)) > BOOTARGS_OFF(ctx)) {
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fprintf(stderr,
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"SW_LOAD ERR: too large partition blob\n");
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fclose(fp);
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return -1;
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}
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guest_part_info_size = len;
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fseek(fp, 0, SEEK_SET);
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read = fread(ctx->baseaddr + GUEST_PART_INFO_OFF(ctx),
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sizeof(char), len, fp);
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if (read < len) {
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fprintf(stderr,
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"SW_LOAD ERR: could not read whole partition blob\n");
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fclose(fp);
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return -1;
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}
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fclose(fp);
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printf("SW_LOAD: partition blob %s size %d copy to guest 0x%lx\n",
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guest_part_info_path, guest_part_info_size,
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GUEST_PART_INFO_OFF(ctx));
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return 0;
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}
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int
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acrn_parse_vsbl(char *arg)
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{
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int len = strlen(arg);
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if (len < STR_LEN) {
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strncpy(vsbl_path, arg, len);
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vsbl_path[len] = '\0';
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assert(check_image(vsbl_path) == 0);
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vsbl_file_name = vsbl_path;
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printf("SW_LOAD: get vsbl path %s\n",
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vsbl_path);
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return 0;
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} else
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return -1;
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}
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static int
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acrn_prepare_vsbl(struct vmctx *ctx)
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{
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FILE *fp;
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int len, read;
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fp = fopen(vsbl_path, "r");
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if (fp == NULL) {
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fprintf(stderr,
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"SW_LOAD ERR: could not open vsbl file: %s\n",
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vsbl_path);
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return -1;
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}
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fseek(fp, 0, SEEK_END);
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len = ftell(fp);
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if ((len + VSBL_OFF(ctx)) > GUEST_PART_INFO_OFF(ctx)) {
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fprintf(stderr,
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"SW_LOAD ERR: too large vsbl file\n");
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fclose(fp);
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return -1;
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}
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vsbl_size = len;
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fseek(fp, 0, SEEK_SET);
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read = fread(ctx->baseaddr + VSBL_OFF(ctx),
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sizeof(char), len, fp);
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if (read < len) {
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fprintf(stderr,
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"SW_LOAD ERR: could not read whole partition blob\n");
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fclose(fp);
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return -1;
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}
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fclose(fp);
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printf("SW_LOAD: partition blob %s size %d copy to guest 0x%lx\n",
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vsbl_path, vsbl_size, VSBL_OFF(ctx));
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return 0;
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}
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int
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acrn_sw_load_vsbl(struct vmctx *ctx)
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{
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int ret;
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struct e820_entry *e820;
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struct vsbl_para *vsbl_para;
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uint64_t vsbl_start_addr =
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(uint64_t)ctx->baseaddr + VSBL_OFF(ctx);
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uint64_t *vsbl_entry =
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(uint64_t *)(ctx->baseaddr + VSBL_ENTRY_OFF(ctx));
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uint64_t *cfg_offset =
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(uint64_t *)(ctx->baseaddr + GUEST_CFG_OFFSET);
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*cfg_offset = ctx->lowmem;
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vsbl_para = (struct vsbl_para *)
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(ctx->baseaddr + CONFIGPAGE_OFF(ctx));
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memset(vsbl_para, 0x0, sizeof(struct vsbl_para));
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e820 = (struct e820_entry *)
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(ctx->baseaddr + E820_TABLE_OFF(ctx));
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vsbl_para->e820_entries = acrn_create_e820_table(ctx, e820);
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vsbl_para->e820_table_address = E820_TABLE_OFF(ctx);
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vsbl_para->acpi_table_address = get_acpi_base();
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vsbl_para->acpi_table_size = get_acpi_table_length();
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if (with_bootargs) {
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strcpy(ctx->baseaddr + BOOTARGS_OFF(ctx), get_bootargs());
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vsbl_para->bootargs_address = BOOTARGS_OFF(ctx);
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} else {
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vsbl_para->bootargs_address = 0;
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}
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if (with_guest_part_info) {
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ret = acrn_prepare_guest_part_info(ctx);
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if (ret)
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return ret;
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vsbl_para->guest_part_info_address = GUEST_PART_INFO_OFF(ctx);
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vsbl_para->guest_part_info_size = guest_part_info_size;
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} else {
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vsbl_para->guest_part_info_address = 0;
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vsbl_para->guest_part_info_size = 0;
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}
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ret = acrn_prepare_vsbl(ctx);
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if (ret)
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return ret;
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vsbl_para->vsbl_address = VSBL_OFF(ctx);
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vsbl_para->vsbl_size = vsbl_size;
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*vsbl_entry = *((uint32_t *) vsbl_start_addr);
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vsbl_para->boot_device_address = boot_blk_bdf;
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return 0;
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}
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