DHCOM STM32MP1 Bootloader U-Boot: Difference between revisions
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1. Start the Console on Linux<br/> | 1. Start the Console on Linux<br/> | ||
2. <tt>''git clone https://github.com/dh-electronics/u-boot-stm32mp1.git --branch | 2. <tt>''git clone https://github.com/dh-electronics/u-boot-stm32mp1.git --branch <<branche-name>>''</tt><br/> | ||
3. <tt>''cd u-boot-stm32mp1''</tt> | 3. <tt>''cd u-boot-stm32mp1''</tt> | ||
|} | |} | ||
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==U-boot console commands== | ==U-boot console commands== | ||
=== | === loady - serial load command === | ||
:'''SPI Flash Init''' | :'''SPI Flash Init''' | ||
:{| class="wikitable" | :{| class="wikitable" | ||
|''<code> | |''<code>loady [addr [baud]]</code>'' | ||
|} | |} | ||
: | :Description: | ||
:The loady command is used to transfer a file to the device via the serial line using the YMODEM protocol. | |||
:The number of transferred bytes is saved in environment variable filesize. | |||
:<code>addr</code> = load address, defaults to environment variable loadaddr or if loadaddr is not set to configuration variable CONFIG_SYS_LOAD_ADDR | |||
:<code>baud</code> = baud rate for the ymodem transmission. After the transmission the baud rate is reset to the original value. | |||
: | :Example: | ||
:In the example below the terminal emulation program picocom was used to transfer a file to the device. | |||
:After entering the loady command the key sequence <CTRL-A><CTRL-S> is used to let picocom prompt for the file name. Picocom invokes the program sz for the file transfer. | |||
:How to start picocom on your PC: <code>picocom --baud 115200 /dev/ttyUSB0</code> | |||
:How to exit picocom on your PC: Entering the key sequence <CTRL-A><CTRL-X> | |||
: | STM32MP> loady $loadaddr 115200 | ||
## Ready for binary (ymodem) download to 0xC2000000 at 115200 bps... | |||
: | CC | ||
*** file: Test_3444bytes.bin | |||
$ sz -vv Test_3444bytes.bin | |||
Sending: Test_3444bytes.bin | |||
Bytes Sent: 3456 BPS:467 | |||
Sending: | |||
Ymodem sectors/kbytes sent: 0/ 0k | |||
Transfer complete | |||
*** exit status: 0 | |||
## Total Size = 0x00000d74 = 3444 Bytes | |||
STM32MP> | |||
Latest revision as of 13:17, 28 November 2022
How to build U-Boot
|
Get sources from Github
Configure and build the Device Tree + Kernel
|
U-boot console commands
loady - serial load command
- SPI Flash Init
loady [addr [baud]]
- Description:
- The loady command is used to transfer a file to the device via the serial line using the YMODEM protocol.
- The number of transferred bytes is saved in environment variable filesize.
addr= load address, defaults to environment variable loadaddr or if loadaddr is not set to configuration variable CONFIG_SYS_LOAD_ADDRbaud= baud rate for the ymodem transmission. After the transmission the baud rate is reset to the original value.
- Example:
- In the example below the terminal emulation program picocom was used to transfer a file to the device.
- After entering the loady command the key sequence <CTRL-A><CTRL-S> is used to let picocom prompt for the file name. Picocom invokes the program sz for the file transfer.
- How to start picocom on your PC:
picocom --baud 115200 /dev/ttyUSB0 - How to exit picocom on your PC: Entering the key sequence <CTRL-A><CTRL-X>
STM32MP> loady $loadaddr 115200 ## Ready for binary (ymodem) download to 0xC2000000 at 115200 bps... CC *** file: Test_3444bytes.bin $ sz -vv Test_3444bytes.bin Sending: Test_3444bytes.bin Bytes Sent: 3456 BPS:467 Sending: Ymodem sectors/kbytes sent: 0/ 0k Transfer complete *** exit status: 0 ## Total Size = 0x00000d74 = 3444 Bytes STM32MP>
