LXR qemu/hw/acpi/utils.c

   1/*
   2 * Utilities for generating ACPI tables and passing them to Guests
   3 *
   4 * Copyright (C) 2019 Intel Corporation
   5 * Copyright (C) 2019 Red Hat Inc
   6 *
   7 * Author: Wei Yang <richardw.yang@linux.intel.com>
   8 * Author: Michael S. Tsirkin <mst@redhat.com>
   9 *
  10 * This program is free software; you can redistribute it and/or modify
  11 * it under the terms of the GNU General Public License as published by
  12 * the Free Software Foundation; either version 2 of the License, or
  13 * (at your option) any later version.
  14
  15 * This program is distributed in the hope that it will be useful,
  16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 * GNU General Public License for more details.
  19
  20 * You should have received a copy of the GNU General Public License along
  21 * with this program; if not, see <http://www.gnu.org/licenses/>.
  22 */
  23
  24#include "qemu/osdep.h"
  25#include "hw/acpi/aml-build.h"
  26#include "hw/acpi/utils.h"
  27#include "hw/loader.h"
  28
  29MemoryRegion *acpi_add_rom_blob(FWCfgCallback update, void *opaque,
  30                                GArray *blob, const char *name)
  31{
  32    uint64_t max_size;
  33
  34    /* Reserve RAM space for tables: add another order of magnitude. */
  35    if (!strcmp(name, ACPI_BUILD_TABLE_FILE)) {
  36        max_size = 0x200000;
  37    } else if (!strcmp(name, ACPI_BUILD_LOADER_FILE)) {
  38        max_size = 0x10000;
  39    } else if (!strcmp(name, ACPI_BUILD_RSDP_FILE)) {
  40        max_size = 0x1000;
  41    } else {
  42        g_assert_not_reached();
  43    }
  44    g_assert(acpi_data_len(blob) <= max_size);
  45
  46    return rom_add_blob(name, blob->data, acpi_data_len(blob), max_size, -1,
  47                        name, update, opaque, NULL, true);
  48}
  49