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cros-ec: Add cros-ec-firmware
cros-ec firmware are in fmap layout, and have two sections that this plugin will look for, the EC_RO, and EC_RW sections. Tested using a servo_micro firmware: $ fwupdtool firmware-parse servo_micro_v2.4.17-df61092c3.bin <select fmap option> FuCrosEcFirmware: Version: 2.4.17 FuFirmwareImage: ID: EC_RO Index: 0x1 Version: servo_micro_v2.4.17-df61092c3 Data: 0xf000 FuFirmwareImage: ID: FR_MAIN Index: 0x2 Data: 0xf000 FuFirmwareImage: ID: RO_FRID Index: 0x3 Address: 0xc4 Data: 0x20 FuFirmwareImage: ID: FMAP Index: 0x4 Address: 0x9a40 Version: 1.0 Data: 0x15e FuFirmwareImage: ID: WP_RO Index: 0x5 Data: 0x10000 FuFirmwareImage: ID: EC_RW Index: 0x6 Address: 0x10000 Version: servo_micro_v2.4.17-df61092c3 Data: 0x10000 FuFirmwareImage: ID: RW_FWID Index: 0x7 Address: 0x100c4 Data: 0x20
This commit is contained in:
Benson Leung
Richard Hughes
parent
23ca19acf8
commit
3a02ad5129
136
plugins/cros-ec/fu-cros-ec-firmware.c
Normal file
136
plugins/cros-ec/fu-cros-ec-firmware.c
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@ -0,0 +1,136 @@
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/*
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* Copyright (C) 2020 Benson Leung <bleung@chromium.org>
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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-fmap-firmware.h"
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#include "fu-cros-ec-common.h"
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#include "fu-cros-ec-firmware.h"
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#define MAXSECTIONS 2
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struct _FuCrosEcFirmware {
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FuFmapFirmware parent_instance;
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struct cros_ec_version version;
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FuCrosEcFirmwareSection sections[MAXSECTIONS];
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};
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G_DEFINE_TYPE (FuCrosEcFirmware, fu_cros_ec_firmware, FU_TYPE_FMAP_FIRMWARE)
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static gboolean
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fu_cros_ec_firmware_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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FuCrosEcFirmware *self = FU_CROS_EC_FIRMWARE (firmware);
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FuFirmware *fmap_firmware = FU_FIRMWARE (firmware);
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self->sections[0].name = "RO";
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self->sections[1].name = "RW";
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for (gsize i = 0; i < G_N_ELEMENTS (self->sections); i++) {
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gboolean rw = FALSE;
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FuCrosEcFirmwareSection *section = &self->sections[i];
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const gchar *fmap_name;
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const gchar *fmap_fwid_name;
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g_autoptr(FuFirmwareImage) img = NULL;
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g_autoptr(FuFirmwareImage) fwid_img = NULL;
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g_autoptr(GBytes) payload_bytes = NULL;
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g_autoptr(GBytes) fwid_bytes = NULL;
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if (g_strcmp0 (section->name, "RO") == 0) {
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fmap_name = "EC_RO";
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fmap_fwid_name = "RO_FRID";
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} else if (g_strcmp0 (section->name, "RW") == 0) {
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rw = TRUE;
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fmap_name = "EC_RW";
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fmap_fwid_name = "RW_FWID";
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} else {
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g_set_error_literal (error,
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G_IO_ERROR,
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G_IO_ERROR_INVALID_DATA,
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"incorrect section name");
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return FALSE;
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}
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img = fu_firmware_get_image_by_id (fmap_firmware,
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fmap_name, error);
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if (img == NULL) {
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g_prefix_error (error, "%s image not found: ",
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fmap_name);
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return FALSE;
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}
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fwid_img = fu_firmware_get_image_by_id (fmap_firmware,
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fmap_fwid_name, error);
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if (fwid_img == NULL) {
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g_prefix_error (error, "%s image not found: ",
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fmap_fwid_name);
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return FALSE;
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}
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fwid_bytes = fu_firmware_image_write (fwid_img, error);
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if (fwid_bytes == NULL) {
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g_prefix_error (error,
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"unable to get bytes from %s: ",
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fmap_fwid_name);
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return FALSE;
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}
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if (!fu_memcpy_safe ((guint8 *) section->version,
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FMAP_STRLEN, 0x0,
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g_bytes_get_data (fwid_bytes, NULL),
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g_bytes_get_size (fwid_bytes), 0x0,
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g_bytes_get_size (fwid_bytes), error))
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return FALSE;
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payload_bytes = fu_firmware_image_write (img, error);
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if (payload_bytes == NULL) {
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g_prefix_error (error,
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"unable to get bytes from %s: ",
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fmap_name);
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return FALSE;
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}
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section->offset = fu_firmware_image_get_addr (img);
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section->size = g_bytes_get_size (payload_bytes);
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fu_firmware_image_set_version (img, section->version);
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if (rw) {
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if (!fu_cros_ec_parse_version (section->version,
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&self->version,
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error)) {
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g_prefix_error (error,
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"failed parsing firmware's version: %32s: ",
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section->version);
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return FALSE;
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}
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fu_firmware_set_version (firmware,
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self->version.triplet);
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}
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}
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/* success */
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return TRUE;
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}
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static void
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fu_cros_ec_firmware_init (FuCrosEcFirmware *self)
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{
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}
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static void
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fu_cros_ec_firmware_class_init (FuCrosEcFirmwareClass *klass)
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{
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FuFmapFirmwareClass *klass_firmware = FU_FMAP_FIRMWARE_CLASS (klass);
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klass_firmware->parse = fu_cros_ec_firmware_parse;
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}
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FuFirmware *
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fu_cros_ec_firmware_new (void)
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{
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return g_object_new (FU_TYPE_CROS_EC_FIRMWARE, NULL);
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}
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41
plugins/cros-ec/fu-cros-ec-firmware.h
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41
plugins/cros-ec/fu-cros-ec-firmware.h
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@ -0,0 +1,41 @@
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/*
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* Copyright (C) 2020 Benson Leung <bleung@chromium.org>
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*
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* SPDX-License-Identifier: LGPL-2.1+
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*/
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#pragma once
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#include "fu-firmware.h"
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#include "fu-fmap-firmware.h"
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#define FU_TYPE_CROS_EC_FIRMWARE (fu_cros_ec_firmware_get_type ())
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G_DECLARE_FINAL_TYPE (FuCrosEcFirmware, fu_cros_ec_firmware, FU, CROS_EC_FIRMWARE, FuFmapFirmware)
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/*
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* Each RO or RW section of the new image can be in one of the following
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* states.
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*/
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typedef enum {
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FU_CROS_EC_FW_NOT_NEEDED= 0, /* Version below or equal that on the target. */
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FU_CROS_EC_FW_NOT_POSSIBLE, /*
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* RO is newer, but can't be transferred due to
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* target RW shortcomings.
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*/
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FU_CROS_EC_FW_NEEDED /*
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* This section needs to be transferred to the
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* target.
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*/
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} FuCrosEcFirmwareUpgradeStatus;
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typedef struct {
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const gchar *name;
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guint32 offset;
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gsize size;
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FuCrosEcFirmwareUpgradeStatus ustatus;
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gchar version[FMAP_STRLEN];
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gint32 rollback;
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guint32 key_version;
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} FuCrosEcFirmwareSection;
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FuFirmware *fu_cros_ec_firmware_new (void);
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@ -10,10 +10,12 @@
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#include "fu-hash.h"
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#include "fu-cros-ec-usb-device.h"
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#include "fu-cros-ec-firmware.h"
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void
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fu_plugin_init (FuPlugin *plugin)
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{
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fu_plugin_set_build_hash (plugin, FU_BUILD_HASH);
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fu_plugin_set_device_gtype (plugin, FU_TYPE_CROS_EC_USB_DEVICE);
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fu_plugin_add_firmware_gtype (plugin, "cros-ec", FU_TYPE_CROS_EC_FIRMWARE);
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}
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@ -10,6 +10,7 @@ shared_module('fu_plugin_cros_ec',
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'fu-plugin-cros-ec.c',
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'fu-cros-ec-usb-device.c',
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'fu-cros-ec-common.c',
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'fu-cros-ec-firmware.c',
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],
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include_directories : [
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root_incdir,
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