mirror of
https://git.proxmox.com/git/fwupd
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82 lines
2.0 KiB
C
82 lines
2.0 KiB
C
/*
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* Copyright (C) 2020 Richard Hughes <richard@hughsie.com>
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*
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* SPDX-License-Identifier: LGPL-2.1+
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*/
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#include "config.h"
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#include "fu-plugin-vfuncs.h"
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#include "fu-hash.h"
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struct FuPluginData {
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gboolean has_device;
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guint8 mei_cfg;
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};
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#define PCI_CFG_HFS_1 0x40
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void
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fu_plugin_init (FuPlugin *plugin)
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{
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fu_plugin_alloc_data (plugin, sizeof (FuPluginData));
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fu_plugin_set_build_hash (plugin, FU_BUILD_HASH);
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fu_plugin_add_udev_subsystem (plugin, "pci");
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}
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gboolean
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fu_plugin_udev_device_added (FuPlugin *plugin, FuUdevDevice *device, GError **error)
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{
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FuPluginData *priv = fu_plugin_get_data (plugin);
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g_autoptr(FuDeviceLocker) locker = NULL;
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/* interesting device? */
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if (g_strcmp0 (fu_udev_device_get_subsystem (device), "pci") != 0)
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return TRUE;
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/* open the config */
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fu_udev_device_set_flags (device, FU_UDEV_DEVICE_FLAG_USE_CONFIG);
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if (!fu_udev_device_set_physical_id (device, "pci", error))
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return FALSE;
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locker = fu_device_locker_new (device, error);
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if (locker == NULL)
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return FALSE;
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/* grab MEI config Register */
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if (!fu_udev_device_pread (device, PCI_CFG_HFS_1, &priv->mei_cfg, error)) {
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g_prefix_error (error, "could not read MEI");
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return FALSE;
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}
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priv->has_device = TRUE;
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return TRUE;
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}
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void
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fu_plugin_add_security_attrs (FuPlugin *plugin, FuSecurityAttrs *attrs)
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{
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FuPluginData *priv = fu_plugin_get_data (plugin);
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g_autoptr(FwupdSecurityAttr) attr = NULL;
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/* only Intel */
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if (!fu_common_is_cpu_intel ())
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return;
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if (!priv->has_device)
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return;
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/* create attr */
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attr = fwupd_security_attr_new ("com.intel.MEI");
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fwupd_security_attr_set_plugin (attr, fu_plugin_get_name (plugin));
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fwupd_security_attr_set_level (attr, FWUPD_SECURITY_ATTR_LEVEL_CRITICAL);
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fwupd_security_attr_set_name (attr, "MEI");
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fu_security_attrs_append (attrs, attr);
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/* load file */
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if ((priv->mei_cfg & (1 << 4)) != 0) {
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fwupd_security_attr_set_result (attr, "Manufacturing Mode");
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return;
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}
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/* success */
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fwupd_security_attr_add_flag (attr, FWUPD_SECURITY_ATTR_FLAG_SUCCESS);
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}
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