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image: add additional fields to Netgear encrypted image

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These fields are used for EAX12 and EX6250v2 series, and perhaps other
devices. Compatibility is preserved with the WAX202 and WAX206.

In addition, adds the related vars to DEVICE_VARS so that the variables
work correctly with multiple devices.

References in GPL source:
https://www.downloads.netgear.com/files/GPL/EAX12_EAX11v2_EAX15v2_GPL_V1.0.3.34_src.tar.gz

* tools/imgencoder/src/gj_enc.c
  Contains code that generates the encrypted image.

Signed-off-by: Wenli Looi <wlooi@ucalgary.ca>
This commit is contained in:
Wenli Looi 2023-03-30 22:27:11 +00:00 committed by Hauke Mehrtens
parent b20be1e41e
commit 0a1ebccc87
4 changed files with 26 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
include/image-commands.mk
View File

@ -432,6 +432,8 @@ define Build/netgear-encrypted-factory
--output-file $@ \
--model $(NETGEAR_ENC_MODEL) \
--region $(NETGEAR_ENC_REGION) \
$(if $(NETGEAR_ENC_HW_ID_LIST),--hw-id-list "$(NETGEAR_ENC_HW_ID_LIST)") \
$(if $(NETGEAR_ENC_MODEL_LIST),--model-list "$(NETGEAR_ENC_MODEL_LIST)") \
--version V1.0.0.0.$(shell cat $(VERSION_DIST)| sed -e 's/[[:space:]]/-/g').$(firstword $(subst -, ,$(REVISION))) \
--encryption-block-size 0x20000 \
--openssl-bin "$(STAGING_DIR_HOST)/bin/openssl" \

15
scripts/netgear-encrypted-factory.py
View File

@ -14,6 +14,8 @@ def main():
parser.add_argument('--model', type=str, required=True)
parser.add_argument('--region', type=str, required=True)
parser.add_argument('--version', type=str, required=True)
parser.add_argument('--hw-id-list', type=str)
parser.add_argument('--model-list', type=str)
parser.add_argument('--encryption-block-size', type=str, required=True)
parser.add_argument('--openssl-bin', type=str, required=True)
parser.add_argument('--key', type=str, required=True)
@ -26,6 +28,10 @@ def main():
assert (encryption_block_size > 0 and encryption_block_size % 16 ==
0), 'Encryption block size must be a multiple of the AES block size (16)'
hw_id_list = args.hw_id_list.split(';') if args.hw_id_list else []
model_list = args.model_list.split(';') if args.model_list else []
hw_info = ';'.join(hw_id_list + model_list)
image = open(args.input_file, 'rb').read()
image_enc = []
for i in range(0, len(image), encryption_block_size):
@ -45,13 +51,18 @@ def main():
image_enc = b''.join(image_enc)
image_with_header = struct.pack(
'>32s32s64s64s64s256s12sII',
'>32s32s64s64sIBBB13s200s100s12sII',
args.model.encode('ascii'),
args.region.encode('ascii'),
args.version.encode('ascii'),
b'Thu Jan 1 00:00:00 1970', # static date for reproducibility
0, # product hw model
0, # model index
len(hw_id_list),
len(model_list),
b'', # reserved
hw_info.encode('ascii'),
b'', # reserved
b'', # RSA signature - omitted for now
b'encrpted_img',
len(image_enc),
encryption_block_size,

6
target/linux/mediatek/image/Makefile
View File

@ -6,6 +6,8 @@
include $(TOPDIR)/rules.mk
include $(INCLUDE_DIR)/image.mk
DEVICE_VARS += NETGEAR_ENC_MODEL NETGEAR_ENC_REGION NETGEAR_ENC_HW_ID_LIST NETGEAR_ENC_MODEL_LIST
loadaddr-$(CONFIG_TARGET_mediatek_mt7622) := 0x44000000
loadaddr-$(CONFIG_TARGET_mediatek_mt7623) := 0x80008000
loadaddr-$(CONFIG_TARGET_mediatek_mt7629) := 0x40008000
@ -22,6 +24,10 @@ define Device/Default
KERNEL_LOADADDR = $(loadaddr-y)
FILESYSTEMS := squashfs
DEVICE_DTS_DIR := $(DTS_DIR)
NETGEAR_ENC_MODEL :=
NETGEAR_ENC_REGION :=
NETGEAR_ENC_HW_ID_LIST :=
NETGEAR_ENC_MODEL_LIST :=
IMAGES := sysupgrade.bin
IMAGE/sysupgrade.bin := append-kernel | pad-to 128k | append-rootfs | \
pad-rootfs | append-metadata

5
target/linux/ramips/image/Makefile
View File

@ -7,6 +7,7 @@ include $(INCLUDE_DIR)/image.mk
DEVICE_VARS += LOADER_TYPE LOADER_FLASH_OFFS LZMA_TEXT_START
DEVICE_VARS += NETGEAR_BOARD_ID NETGEAR_HW_ID
DEVICE_VARS += NETGEAR_ENC_MODEL NETGEAR_ENC_REGION NETGEAR_ENC_HW_ID_LIST NETGEAR_ENC_MODEL_LIST
DEVICE_VARS += BUFFALO_TAG_PLATFORM BUFFALO_TAG_VERSION BUFFALO_TAG_MINOR
DEVICE_VARS += SEAMA_SIGNATURE SEAMA_MTDBLOCK
DEVICE_VARS += SERCOMM_HWNAME SERCOMM_HWID SERCOMM_HWVER SERCOMM_SWVER
@ -179,6 +180,10 @@ define Device/Default
SOC := $(DEFAULT_SOC)
DEVICE_DTS_DIR := ../dts
DEVICE_DTS = $$(SOC)_$(1)
NETGEAR_ENC_MODEL :=
NETGEAR_ENC_REGION :=
NETGEAR_ENC_HW_ID_LIST :=
NETGEAR_ENC_MODEL_LIST :=
IMAGES := sysupgrade.bin
COMPILE :=
sysupgrade_bin := append-kernel | append-rootfs | pad-rootfs