STM32MP15 U-Boot

来自百问网嵌入式Linux wiki
Wiki讨论 | 贡献2020年11月3日 (二) 17:42的版本

This article briefly describes the support in U-Boot.

STM32MP15x lines support

For detailed information, please read the file in the delivered U-Boot code = board/st/stm32mp1/README| |}} board/st/stm32mp1/README

Also available in official U-Boot Git.

Code :

Configuration Files:

Selecting targets : choose defconfig and Device Tree

Each boot chain is supported by one U-Boot configuration with defconfig

Boot chain defconfig FSBL SSBL TEE support
Trusted Boot stm32mp15_trusted_defconfig TF-A U-Boot
u-boot.stm32
-
Trusted Boot with OP-TEE stm32mp15_optee_defconfig TF-A U-Boot
u-boot.stm32
yes
Basic Boot stm32mp15_basic_defconfig SPL
u-boot-spl.stm32
U-Boot
u-boot.img
-
Warning.png The basic boot chain is not supported/promoted by STMicroelectronics to make product (see Boot chains overview for details).

Several targets/ boards are supported with the associated device-tree (same name as kernel):

Board part number Description Device tree
}}{{#vardefine:typ|}}{{#vardefine:typ| Evaluation board}}{{#vardefine:info|More info green.png}}STM32MP157C-EV1{{#var:typ}} {{#var:info}} MB1262+MB1263 |}} stm32mp157c-ev1 ]
STM32MP157C-ED1 Evaluation daughterboard MB1263 |}} stm32mp157c-ed1 ]
}}{{#vardefine:typ|}}{{#vardefine:typ| Discovery kit}}{{#vardefine:info|More info green.png}}STM32MP157A-DK1{{#var:typ}} {{#var:info}} MB1272 |}} stm32mp157a-dk1 ]
}}{{#vardefine:typ|}}{{#vardefine:typ| Discovery kit}}{{#vardefine:info|More info green.png}}STM32MP157C-DK2{{#var:typ}} {{#var:info}} MB1272+MB1407 |}} stm32mp157c-dk2 ]

Compilation

see U-Boot_overview#U-Boot_build

With <mode> = 'basic', 'trusted' or 'optee'

 PC $> make stm32mp15_<mode>_defconfig
 PC $> make DEVICE_TREE=<device tree name> all
  • DEVICE_TREE: select in arch/arm/dts the device tree that is used
  • KBUILD_OUTPUT: change the destination directory for the build
  • EXT_DTB: select external device tree

Examples

{{#vardefine:info|}}{{#vardefine:typ|}}{{#vardefine:typ| Evaluation board}}{{#vardefine:info|More info green.png}}STM32MP157C-EV1{{#var:typ}} {{#var:info}} trusted boot

 PC $> make stm32mp15_trusted_defconfig
 PC $> make DEVICE_TREE=stm32mp157c-ev1 all

{{#vardefine:info|}}{{#vardefine:typ|}}{{#vardefine:typ| Discovery kit}}{{#vardefine:info|More info green.png}}STM32MP157C-DK2{{#var:typ}} {{#var:info}} trusted boot

Using export to select the device tree

 PC $> export KBUILD_OUTPUT=../build/trusted
 PC $> export DEVICE_TREE=stm32mp157c-dk2
 PC $> make stm32mp15_trusted_defconfig
 PC $> make all

STM32MP157C-ED1 Evaluation daughterboard basic boot

 PC $> export KBUILD_OUTPUT=../build/basic
 PC $> make stm32mp15_basic_defconfig
 PC $> make DEVICE_TREE=stm32mp157c-ed1 all

Trusted boot chain with external device tree

 PC $> make stm32mp15_trusted_defconfig
 PC $> make EXT_DTB=boot/stm32mp157c-myboard.dtb all