mirror of
https://github.com/NXP/imx-firmware.git
synced 2024-11-16 18:45:59 +00:00
9ba6bfbcda
Updated firmware: SDIO-UART W8987 Firmware version 16.92.21.p99 SDIO_UART IW612 Firmware version 18.99.2.p19.6 SDIO-UART W9098 Firmware version 17.92.1.p136.128 PCIE-UART W9098 Firmware version 17.92.1.p136.129 SDIO-UART W8801 Firmware version 14.92.36.p182 Unchanged firmware: PCIE-UART W8997 Firmware version 16.92.21.p84.4 SDIO-UART W8997 Firmware version 16.92.21.p84.4 SDIO-UART IW416 Firmware version 16.92.21.p84.3 Signed-off-by: Sherry Sun <sherry.sun@nxp.com>
65 lines
2.3 KiB
Text
65 lines
2.3 KiB
Text
The helper_uart is a UART download helper for boosting firmware UART
|
|
download speed.
|
|
|
|
Without such a helper, the normal firmware download baudrate is fixed
|
|
to 115200bps by bootrom code. When using the helper, the bootrom first
|
|
download the helper itself at the fixed baudrate. Then the helper
|
|
runs and changes the UART baudrate to a higher speed, say 3Mbps. And
|
|
finally the firmware is downloaded at this high speed to save the
|
|
total download time.
|
|
|
|
The helper is very small, less than 3KB. So it can be downloaded very
|
|
fast even at 115200bps baudrate. Time saved using higher baudrate for
|
|
downloading firmware easily compensate for the time in downloading
|
|
the small helper itself.
|
|
|
|
Uart download related files:
|
|
|-fw_loader_arm
|
|
|-fw_loader_linux
|
|
|-fw_loader_win.exe
|
|
|-helper_uart_115200.bin
|
|
|-helper_uart_230400.bin
|
|
|-helper_uart_921600.bin
|
|
|-helper_uart_2000000.bin
|
|
|-helper_uart_3000000.bin
|
|
|-helper_uart_3250000.bin
|
|
|
|
Eg: fw_loader.exe com1 115200 0 helper_uart_3000000.bin
|
|
|
|
How to download the FW image:
|
|
We use a marvell proprietary protocol to download the FW image.
|
|
Please refer to UART_HELPER.txt for more details on the protocol.
|
|
|
|
We use the new helper protocol to download both the helper and the FW image.
|
|
|
|
Once the FW is downloaded on the chip, it automatically starts running
|
|
from its entry point.
|
|
|
|
There are different fw_loader executables available depending on the
|
|
Platform on which it is to be run.
|
|
|
|
Boot ROM code does not enable UART HW flow control. This means that while
|
|
downloading the helper, Flow Control should be disabled. Once the helper
|
|
is downloaded, Flow Control should be set to 1, to download the FW.
|
|
|
|
<Format: fw_loader_win.exe ComPort BaudRate FlowControl FileName>
|
|
|
|
e.g.
|
|
Windows:
|
|
Download Helper:
|
|
fw_loader_win.exe com1 115200 0 helper_uart_3000000.bin
|
|
Download FW image at specified BaudRate:
|
|
fw_loader_win.exe com1 3000000 1 firmware.image
|
|
|
|
Linux:
|
|
Download Helper:
|
|
./fw_loader_linux /dev/ttyUSB# 115200 0 helper_uart_3000000.bin
|
|
Download FW image at specified BaudRate:
|
|
./fw_loader_linux /dev/ttyUSB# 3000000 1 firmware.image
|
|
|
|
Saar:
|
|
Download Helper:
|
|
./fw_loader_arm /dev/ttyUSB# 115200 0 helper_uart_3000000.bin
|
|
Download FW image at specified BaudRate:
|
|
./fw_loader_arm /dev/ttyUSB# 3000000 1 firmware.image
|
|
|