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Thunderbolt images brought in from the SPI don't have a FARB header. Thunderbolt update images do. So these two types of images need to be handled separately from the firmware parser.
109 lines
2.9 KiB
C
109 lines
2.9 KiB
C
/*
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* Copyright (C) 2020 Mario Limonciello <mario.limonciello@dell.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 <libfwupd/fwupd-error.h>
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#include "fu-common.h"
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#include "fu-thunderbolt-firmware.h"
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#include "fu-thunderbolt-firmware-update.h"
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struct _FuThunderboltFirmwareUpdate {
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FuThunderboltFirmwareClass parent_instance;
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};
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G_DEFINE_TYPE (FuThunderboltFirmwareUpdate, fu_thunderbolt_firmware_update, FU_TYPE_THUNDERBOLT_FIRMWARE)
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static inline gboolean
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fu_thunderbolt_firmware_valid_farb_pointer (guint32 pointer)
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{
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return pointer != 0 && pointer != 0xFFFFFF;
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}
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static gboolean
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fu_thunderbolt_firmware_read_farb_pointer_impl (FuThunderboltFirmwareUpdate *self,
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FuThunderboltSection section,
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guint32 offset,
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guint32 *value,
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GError **error)
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{
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FuThunderboltFirmware *tbt = FU_THUNDERBOLT_FIRMWARE (self);
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guint32 tmp = 0;
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if (!fu_thunderbolt_firmware_read_location (tbt, section, offset,
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(guint8 *) &tmp, 3, /* 24 bits */
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error)) {
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g_prefix_error (error, "failed to read farb pointer: ");
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return FALSE;
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}
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*value = GUINT32_FROM_LE (tmp);
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return TRUE;
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}
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/* returns invalid FARB pointer on error */
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static guint32
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fu_thunderbolt_firmware_read_farb_pointer (FuThunderboltFirmwareUpdate *self, GError **error)
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{
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guint32 value;
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if (!fu_thunderbolt_firmware_read_farb_pointer_impl (self,
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_SECTION_DIGITAL,
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0x0, &value, error))
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return 0;
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if (fu_thunderbolt_firmware_valid_farb_pointer (value))
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return value;
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if (!fu_thunderbolt_firmware_read_farb_pointer_impl (self,
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_SECTION_DIGITAL,
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0x1000, &value, error))
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return 0;
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if (!fu_thunderbolt_firmware_valid_farb_pointer (value)) {
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g_set_error_literal (error,
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FWUPD_ERROR,
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FWUPD_ERROR_INVALID_FILE,
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"Invalid FW image file format");
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return 0;
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}
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return value;
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}
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static gboolean
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fu_thunderbolt_firmware_update_parse (FuFirmware *firmware,
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GBytes *fw,
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guint64 addr_start,
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guint64 addr_end,
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FwupdInstallFlags flags,
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GError **error)
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{
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FuThunderboltFirmwareUpdate *self = FU_THUNDERBOLT_FIRMWARE_UPDATE (firmware);
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guint32 offset = fu_thunderbolt_firmware_read_farb_pointer (self, error);
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if (offset == 0)
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return FALSE;
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g_debug ("detected digital section begins at 0x%x", offset);
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fu_thunderbolt_firmware_set_digital (FU_THUNDERBOLT_FIRMWARE (firmware), offset);
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return TRUE;
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}
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static void
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fu_thunderbolt_firmware_update_init (FuThunderboltFirmwareUpdate *self)
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{
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}
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static void
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fu_thunderbolt_firmware_update_class_init (FuThunderboltFirmwareUpdateClass *klass)
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{
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FuThunderboltFirmwareClass *klass_firmware = FU_THUNDERBOLT_FIRMWARE_CLASS (klass);
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klass_firmware->parse = fu_thunderbolt_firmware_update_parse;
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}
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FuThunderboltFirmwareUpdate *
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fu_thunderbolt_firmware_update_new (void)
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{
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return g_object_new (FU_TYPE_THUNDERBOLT_FIRMWARE_UPDATE, NULL);
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}
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