mirror of
https://git.proxmox.com/git/fwupd
synced 2025-05-02 16:45:45 +00:00
103 lines
2.1 KiB
C
103 lines
2.1 KiB
C
/*
|
|
* Copyright (C) 2020 Richard Hughes <richard@hughsie.com>
|
|
*
|
|
* SPDX-License-Identifier: LGPL-2.1+
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include <fwupdplugin.h>
|
|
|
|
#include <string.h>
|
|
|
|
#include "fu-acpi-dmar.h"
|
|
|
|
struct _FuAcpiDmar {
|
|
GObject parent_instance;
|
|
gboolean opt_in;
|
|
};
|
|
|
|
G_DEFINE_TYPE(FuAcpiDmar, fu_acpi_dmar, G_TYPE_OBJECT)
|
|
|
|
#define DMAR_DMA_CTRL_PLATFORM_OPT_IN_FLAG 0x4
|
|
|
|
FuAcpiDmar *
|
|
fu_acpi_dmar_new(GBytes *blob, GError **error)
|
|
{
|
|
FuAcpiDmar *self = g_object_new(FU_TYPE_ACPI_DMAR, NULL);
|
|
gchar creator_id[5] = {'\0'};
|
|
gchar oem_table_id[9] = {'\0'};
|
|
gchar signature[5] = {'\0'};
|
|
gsize bufsz = 0;
|
|
guint8 flags = 0;
|
|
const guint8 *buf = g_bytes_get_data(blob, &bufsz);
|
|
|
|
/* parse table */
|
|
if (!fu_memcpy_safe((guint8 *)signature,
|
|
sizeof(signature),
|
|
0x0, /* dst */
|
|
buf,
|
|
bufsz,
|
|
0x00, /* src */
|
|
sizeof(signature) - 1,
|
|
error))
|
|
return NULL;
|
|
if (strcmp(signature, "DMAR") != 0) {
|
|
g_set_error(error,
|
|
G_IO_ERROR,
|
|
G_IO_ERROR_NOT_SUPPORTED,
|
|
"Not a DMAR table, got %s",
|
|
signature);
|
|
return NULL;
|
|
}
|
|
if (!fu_memcpy_safe((guint8 *)oem_table_id,
|
|
sizeof(oem_table_id),
|
|
0x0, /* dst */
|
|
buf,
|
|
bufsz,
|
|
0x10, /* src */
|
|
sizeof(oem_table_id) - 1,
|
|
error))
|
|
return NULL;
|
|
g_debug("OemTableId: %s", oem_table_id);
|
|
if (!fu_memcpy_safe((guint8 *)creator_id,
|
|
sizeof(creator_id),
|
|
0x0, /* dst */
|
|
buf,
|
|
bufsz,
|
|
0x1c, /* src */
|
|
sizeof(creator_id) - 1,
|
|
error))
|
|
return NULL;
|
|
g_debug("CreatorId: %s", creator_id);
|
|
if (!fu_memcpy_safe(&flags,
|
|
sizeof(flags),
|
|
0x0, /* dst */
|
|
buf,
|
|
bufsz,
|
|
0x25, /* src */
|
|
sizeof(flags),
|
|
error))
|
|
return NULL;
|
|
g_debug("Flags: 0x%02x", flags);
|
|
self->opt_in = (flags & DMAR_DMA_CTRL_PLATFORM_OPT_IN_FLAG) > 0;
|
|
return self;
|
|
}
|
|
|
|
gboolean
|
|
fu_acpi_dmar_get_opt_in(FuAcpiDmar *self)
|
|
{
|
|
g_return_val_if_fail(FU_IS_ACPI_DMAR(self), FALSE);
|
|
return self->opt_in;
|
|
}
|
|
|
|
static void
|
|
fu_acpi_dmar_class_init(FuAcpiDmarClass *klass)
|
|
{
|
|
}
|
|
|
|
static void
|
|
fu_acpi_dmar_init(FuAcpiDmar *self)
|
|
{
|
|
}
|