Compile u-boot source code for stm32p157 development board

1 Add your own platform

Use command “cd u-boot-stm32mp-2020.01”, Get into uboot Catalog , As shown in the figure below ：

 

Use the following command

cp configs/stm32mp15_trusted_defconfig configs/stm32mp15_itop_trusted_defconfig

Create your own default configuration file , As shown in the figure below ：

Then we use the command “cd arch/arm/dts/” Enter the device tree file storage directory , You can see ST Device tree of official development board

Pieces of , Our board is also designed with reference to the official development board , So for our convenience, we directly modify the official development board

Device tree file to fit our own development board .

Use the following command , Copy the official device tree file and modify the file name , As shown in the figure below

cp stm32mp15xx-dkx.dtsi stm32mp15xx-itop.dtsi

cp stm32mp157a-dk1.dts stm32mp157a-itop.dts

cp stm32mp157a-dk1-u-boot.dtsi stm32mp157a-itop-u-boot.dtsi

Use command “vim stm32mp157a-itop.dts” Get into stm32mp157a-itop.dts file , Put... In the header file

#include "stm32mp15xx-dkx.dtsi" It is amended as follows

#include "stm32mp15xx-itop.dtsi" The modification is completed as shown in the figure below ：

and take model from STMicroelectronics STM32MP157A-DK1 Discovery Board repair Change by STMicroelectronics

STM32MP157A-iTOP Discovery Board, The modification is completed as shown in the figure below ：

After saving and exiting, use the following command to enter stm32mp15xx-itop.dtsi Folder

vim stm32mp15xx-itop.dtsi

As a result of official DK1 The default memory of the development board is 512MB And our memory is 1G, So we're going to memory Property values are set by

0xc0000000 0x20000000

It is amended as follows

0xc0000000 0x40000000

The modification is completed as shown in the figure below :

After saving and exiting , Use command “vim stm32mp157a-itop-u-boot.dtsi” Get into stm32mp157a-itop-u-boot.dtsi The file will be

#include "stm32mp15-ddr3-1x4Gb-1066-binG.dtsi" It is amended as follows

#include "stm32mp15-ddr3-2x4Gb-1066-binG.dtsi" The modification is completed as shown in the figure below ：

After saving and exiting , Continue to use the command under the device tree “ vim Makefile” Modify the compilation configuration file , After opening, as shown in the figure below ：

Use the find command to find “stm32mp157a-dk1.dtb”, Then add our own device tree file below

stm32mp157a-itop.dtb \

After adding, it is shown in the figure below ：

Save and exit , So far, our own platform has been added .