Improve download speed, and adaption for new pm command about BK7239N #7099

ziliguo · 2025-12-26T04:16:16Z

HW checksum for T-Put further optimization;
Improve the download speed;
adaption for "power start -l"
Support of image encryption.

sunghan-chang · 2025-12-26T05:13:24Z

@ewoodev @hk-gwak @jylee9613 Could you review this?

sunghan-chang · 2025-12-26T05:15:06Z

@ziliguo Could you let us know details of 2. Improve the download speed;?
How did you improve and speed change from to ? With higher speed, we can get more noise. If it gets noise and data is corrupted, then how does downloader work? Is it possible to detect corruption? If it checks, and then?

ziliguo · 2025-12-26T06:29:25Z

@ziliguo Could you let us know details of 2. Improve the download speed;? How did you improve and speed change from to ? With higher speed, we can get more noise. If it gets noise and data is corrupted, then how does downloader work? Is it possible to detect corruption? If it checks, and then?

Hi @sunghan-chang ,
For the download speed improvement, we mainly modify the two points below, thus total download time improve from 26s to 15s.

Improve UART download baudrate configuration(from 2M to 4M/6M): The baud rate configuration only needs to be changed in the beken download tool ( also named MP tool in the production line ) configuration;
The high-speed serial port configuration in PC: This requires changing the serial port settings in the PC's Device Manager, changing the delay time from 16ms to 2ms.

For the noise issue with high-speed you have mentioned, we use flow below to keep stability：
By default, every 4K flash download, download flow:

The beken download tool ( also named MP tool in the production line ) calc CRC1 for 4K data;
Write to BK7239N by UART;
Download tool send a cmd to get the CRC2 result, which BK7239N will calc after reading the 4K data from Flash;
Download tool check CRC1=CRC2, if yes, go to next 4K bytes, else, try again.
The download tool ensures that the content programmed into the Flash matches the original programming file.

amandeep-samsung · 2025-12-26T06:57:38Z

build/tools/armino/bkfil_pack_tool/bkfil_bin_pack.py

        required = ["kernel", "bootparam"]
        optional = ["app1", "app2", "userfs"]
-        if self.config.get("CONFIG_BINARY_SIGNING", "n") != "y":
+        if self.config.get("CONFIG_TFM", "n") != "y":


@ziliguo : Please explain what is effect of this change ?

Hi @amandeep-samsung ,
Before this modification was added, the bootloader was packaged within all-app.bin. After this modification, the bootloader can be separated from all-app.bin. This allows all-app.bin to be downloaded via the bootloader, and the bootloader includes optimizations for download speed.

amandeep-samsung · 2025-12-26T08:10:10Z

@ziliguo Could you let us know details of 2. Improve the download speed;? How did you improve and speed change from to ? With higher speed, we can get more noise. If it gets noise and data is corrupted, then how does downloader work? Is it possible to detect corruption? If it checks, and then?

Hi @sunghan-chang , For the download speed improvement, we mainly modify the two points below, thus total download time improve from 26s to 15s.

Improve UART download baudrate configuration(from 2M to 4M/6M): The baud rate configuration only needs to be changed in the beken download tool ( also named MP tool in the production line ) configuration;

The high-speed serial port configuration in PC: This requires changing the serial port settings in the PC's Device Manager, changing the delay time from 16ms to 2ms.

For the noise issue with high-speed you have mentioned, we use flow below to keep stability： By default, every 4K flash download, download flow:

The beken download tool ( also named MP tool in the production line ) calc CRC1 for 4K data;

Write to BK7239N by UART;

Download tool send a cmd to get the CRC2 result, which BK7239N will calc after reading the 4K data from Flash;

Download tool check CRC1=CRC2, if yes, go to next 4K bytes, else, try again.
The download tool ensures that the content programmed into the Flash matches the original programming file.

@ziliguo Latency Timer (msec) value is not changed in Realtek case, and we use same settings as 16 msec for it.
I have 2 questions for it.

can Beken MP tool handle reading this responsive data faster by its own instead of changing Timer value ? Or
tuning latency timer during download usage time only instead of changing driver level Latency Timer value for all time. ?

seokhun-eom24 · 2025-12-29T01:09:42Z

apps/examples/power/power_main.c

Thank you for find this issue.

We'll fix this issue for master branch.
For now use power start -l -t.
And when master branch is updated, you can cherry-pick that code.

#7101

Hi @seokhun-eom24, got it. Once you update to the master branch, we will sync the PM changes to this BK7239N_Support branch. We will revert this commit for now. Thank you.

It's merged now. you can revert this commit.

okay. It has already been reverted now.

jylee9613 · 2025-12-29T03:02:16Z

os/arch/arm/src/armino/armino_signature.c

    return status;
 }

 int verify_firmware_signature(uint32_t address)


verify_firmware_signature seems verify only app binary signature.
How can we verify kernel binary? Would you please add up_verify_usersignature too?

Hello @jylee9613, during each startup, the bootloader verifies the signature of the kernel image, and only if the verification passes will it execute the kernel code; however, in the application code, the interface up_verify_kernelsignature has not been properly adapted yet. We will provide this interface in the future. Thank you.

It seems that verify_firmware_signature is used only in internal. How about change this API to static?
We only use up_verify_usersignature/up_verify_kernelsignature.

@jylee9613 Yes, of course. It has already been updated to static now.

ziliguo · 2025-12-29T03:38:39Z

@ziliguo Could you let us know details of 2. Improve the download speed;? How did you improve and speed change from to ? With higher speed, we can get more noise. If it gets noise and data is corrupted, then how does downloader work? Is it possible to detect corruption? If it checks, and then?

Hi @sunghan-chang , For the download speed improvement, we mainly modify the two points below, thus total download time improve from 26s to 15s.

Improve UART download baudrate configuration(from 2M to 4M/6M): The baud rate configuration only needs to be changed in the beken download tool ( also named MP tool in the production line ) configuration;

The high-speed serial port configuration in PC: This requires changing the serial port settings in the PC's Device Manager, changing the delay time from 16ms to 2ms.

For the noise issue with high-speed you have mentioned, we use flow below to keep stability： By default, every 4K flash download, download flow:

The beken download tool ( also named MP tool in the production line ) calc CRC1 for 4K data;

Write to BK7239N by UART;

Download tool send a cmd to get the CRC2 result, which BK7239N will calc after reading the 4K data from Flash;

Download tool check CRC1=CRC2, if yes, go to next 4K bytes, else, try again.
The download tool ensures that the content programmed into the Flash matches the original programming file.

@ziliguo Latency Timer (msec) value is not changed in Realtek case, and we use same settings as 16 msec for it. I have 2 questions for it.

can Beken MP tool handle reading this responsive data faster by its own instead of changing Timer value ? Or

tuning latency timer during download usage time only instead of changing driver level Latency Timer value for all time. ?

Hi @amandeep-samsung , thank you for your valuable suggestion. The MP Tools team will consider this request and conduct a feasibility assessment.

- Move WiFi APIs to RAM, thus to improve more transfer performance; - Allocate more flash partition size for kernel

- Before this modification was added, the bootloader was packaged within all-app.bin. - After this modification, the bootloader can be separated from all-app.bin. - This allows all-app.bin to be downloaded via the bootloader, and the bootloader includes optimizations for download speed.

…ature - Adapt for pm test cmd - Update the calculate_sha256 api about signature - Fix the verify_firmware_signature api static issue

- Added BLE CoC SDK interface - Supports dynamic parameter changes for multi-advertisement of BLE - Update tfm and wifi libs

- Add hardware checksum port interface for lwIP. - Introduce hardware checksum registration mechanism to allow vendors to register hardware checksum functions for improved performance. The system will use software checksum automatically when no hardware function is registered. - Usage: 1. Enable CONFIG_NET_LWIP_HW_CHKSUM_PORT 2. Implement vendor-specific hardware checksum function with the following format: uint16_t vendor_chksum_func(const void *dataptr, int len) 3. Register the vendor function during initialization: lwip_register_hw_chksum(vendor_chksum_func)

ziliguo changed the title ~~os: Improve download speed, and adaption for new pm command~~ Improve download speed, and adaption for new pm command about BK7239N Dec 26, 2025

sunghan-chang requested review from ewoodev and hk-gwak December 26, 2025 05:11

amandeep-samsung reviewed Dec 26, 2025

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seokhun-eom24 reviewed Dec 29, 2025

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jylee9613 reviewed Dec 29, 2025

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ziliguo force-pushed the BK7239N_dev branch from 77dbcbc to 133b521 Compare December 29, 2025 04:58

ziliguo added 5 commits December 30, 2025 23:03

build/configs/bk7239n: Update defconfig for bk7239n

99b3e44

- Move WiFi APIs to RAM, thus to improve more transfer performance; - Allocate more flash partition size for kernel

os/arch/arm/src/armino: Update the beken adapt driver code about sign…

15693ca

…ature - Adapt for pm test cmd - Update the calculate_sha256 api about signature - Fix the verify_firmware_signature api static issue

os/board/bk7239n: Update wifi, ble and pm driver code

5d4b91c

- Added BLE CoC SDK interface - Supports dynamic parameter changes for multi-advertisement of BLE - Update tfm and wifi libs

ziliguo force-pushed the BK7239N_dev branch from 133b521 to 70277af Compare December 30, 2025 15:16

amandeep-samsung approved these changes Dec 31, 2025

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Improve download speed, and adaption for new pm command about BK7239N #7099

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