Difference between revisions of "STM32MP15 U-Boot"

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This article briefly describes the STM32MP15x lines More info.png support in U-Boot.

1 STM32MP15x lines More info.png support[edit]

For detailed information, please read the file in the delivered U-Boot code = doc/board/st/stm32mp1.rst or the stm32mp1 documentation generated by make htlmdocs[1].

Also available in official U-Boot Git.

Code :

Configuration Files:

2 Selecting targets : choose defconfig and Device Tree[edit]

The STM32 MPU boot chain is supported by one U-Boot configuration with defconfig = stm32mp15_trusted_defconfig

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

Board part number Device tree Description
STM32MP157A-EV1 Evaluation board More info green.png stm32mp157a-ev1 MB1262+MB1263
STM32MP157C-EV1 Evaluation board More info green.png stm32mp157c-ev1
STM32MP157D-EV1 Evaluation board More info green.png stm32mp157d-ev1
STM32MP157F-EV1 Evaluation board More info green.png stm32mp157f-ev1
STM32MP157A-DK1 Discovery kit More info green.png stm32mp157a-dk1 MB1272
STM32MP157D-DK1 Discovery kit More info green.png stm32mp157d-dk1
STM32MP157C-DK2 Discovery kit More info green.png stm32mp157c-dk2 MB1272+MB1407
STM32MP157F-DK2 Discovery kit More info green.png stm32mp157f-dk2

For information the 'Evaluation' daughter-board only (MB1263 without MB1262) is also supported by stm32mp15*-ed1.dts device tree files.

3 Compilation[edit]

see U-Boot_overview#U-Boot_build

With the defconfig file: stm32mp15_trusted_defconfig 

 
 make stm32mp15_trusted_defconfig
  make DEVICE_TREE=<Device tree> all

The supported variables are:

  • 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

The ouput file is u-boot.stm32.

4 SPL compilation[edit]

The alternate boot chain with SPL is also supported by "stm32mp15_basic_defconfig" but only for U-Boot_SPL:_DDR_interactive_mode

The resulting U-Boot files are located in your build directory:

  • u-boot-spl.stm32 : FSBL = SPL binary with STM32 image header, loaded by ROM code
  • u-boot.img : SSBL = U-Boot binary with U-Boot image header (uImage), loaded by SPL
Warning white.png Warning
This alternate boot chain with SPL is not supported/promoted by STMicroelectronics to make product.

5 Examples[edit]

5.1 STM32MP157F-EV1 Evaluation board More info green.png[edit] 

 
 make stm32mp15_trusted_defconfig
  make DEVICE_TREE=stm32mp157f-ev1 all

5.2 STM32MP157C-EV1 Evaluation board More info green.png[edit] 

 
 make stm32mp15_trusted_defconfig
  make DEVICE_TREE=stm32mp157c-ev1 all

5.3 STM32MP157D-DK1 Discovery kit More info green.png[edit] 

 
 make stm32mp15_trusted_defconfig
  make DEVICE_TREE=stm32mp157d-dk1 all

5.4 STM32MP157C-DK2 Discovery kit More info green.png[edit]

Using export to select the device tree 

 
 export KBUILD_OUTPUT=../build/stm32mp15_trusted
  export DEVICE_TREE=stm32mp157c-dk2
  make stm32mp15_trusted_defconfig
  make all

5.5 Custom board with external device tree[edit] 

 
 make stm32mp15_trusted_defconfig
  make EXT_DTB=stm32mp151a-myboard.dtb all

5.6 SPL for STM32MP157F-EV1 Evaluation board More info green.png[edit] 

 
 make stm32mp15_basic_defconfig
  make DEVICE_TREE=stm32mp157f-ev1 all
  1. ↑ https://u-boot.readthedocs.io/en/stable/board/st/stm32mp1.html 
This article briefly describes the {{MicroprocessorDevice | device=15}} support in [[U-Boot_overview|U-Boot]].

== {{MicroprocessorDevice | device=15}} support ==

For detailed information, please read the file in the delivered U-Boot code = {{CodeSource | U-Boot | doc/board/st/stm32mp1.rst}} or the stm32mp1 documentation generated by <code>make htlmdocs</code><ref>https://u-boot.readthedocs.io/en/stable/board/st/stm32mp1.html</ref>.

Also available in official U-Boot Git.

Code :
* {{CodeSource | U-Boot | arch/arm/mach-stm32mp}}: arch specific code for {{MicroprocessorDevice | device=Class}}
* {{CodeSource | U-Boot | board/st/common}}: STMicroelectronics common code 
* {{CodeSource | U-Boot | board/st/stm32mp1}}: generic STMicroelectronics board for {{MicroprocessorDevice | device=1}}
* drivers/*/*stm32* : drivers

Configuration Files:
* defconfig file
** {{CodeSource | U-Boot | configs/stm32mp15_basic_defconfig}}
** {{CodeSource | U-Boot | configs/stm32mp15_trusted_defconfig}}
* config files
** {{CodeSource | U-Boot | include/configs/stm32mp1.h}}
* [[STM32MP15_device_tree]] in {{CodeSource | U-Boot | arch/arm/dts }} : stm32mp15*.dts*
** {{HighlightParam|<Device tree>}}.dts : same as kernel
** {{HighlightParam|<Device tree>}}-u-boot.dtsi : addition for u-boot automatically included in build process

== Selecting targets : choose defconfig and Device Tree ==

The [[Boot_chainschain_overview|STM32 MPU boot chain]] is supported by one [[U-Boot_overview#Kbuild|U-Boot configuration with defconfig]] = {{HighlightParam|stm32mp15_trusted_defconfig}}

Several [[STM32MP15_boards|boards]] are supported with the associated device-tree (same name as kernel):

{| class="st-table"
|-
! Board part number  !! {{HighlightParam|Device tree}} !! Description 
|-
| '''{{Board | type=157A-EV1}}''' || {{CodeSource | U-Boot | arch/arm/dts/stm32mp157a-ev1.dts|stm32mp157a-ev1}} || rowspan="4" | [[MB1262]]+[[MB1263]]
|-
| '''{{Board | type=157C-EV1}}''' || {{CodeSource | U-Boot | arch/arm/dts/stm32mp157c-ev1.dts|stm32mp157c-ev1}}
|-
| '''{{Board | type=157D-EV1}}''' || {{CodeSource | U-Boot | arch/arm/dts/stm32mp157d-ev1.dts|stm32mp157d-ev1}}
|-
| '''{{Board | type=157F-EV1}}''' || {{CodeSource | U-Boot | arch/arm/dts/stm32mp157f-ev1.dts|stm32mp157f-ev1}}
|-
| '''{{Board | type=157A-DK1}}''' ||  {{CodeSource | U-Boot | arch/arm/dts/stm32mp157a-dk1.dts|stm32mp157a-dk1}} || rowspan="2" | [[MB1272]]
|-
| '''{{Board | type=157D-DK1}}''' ||  {{CodeSource | U-Boot | arch/arm/dts/stm32mp157d-dk1.dts|stm32mp157d-dk1}}
|-
| '''{{Board | type=157C-DK2}}''' || {{CodeSource | U-Boot | arch/arm/dts/stm32mp157c-dk2.dts|stm32mp157c-dk2}} || rowspan="2" | [[MB1272]]+[[MB1407]] 
|-
| '''{{Board | type=157F-DK2}}''' || {{CodeSource | U-Boot | arch/arm/dts/stm32mp157f-dk2.dts|stm32mp157f-dk2}}
|}

For information the 'Evaluation' daughter-board only ([[MB1263]] without [[MB1262]]) is also supported by stm32mp15*-ed1.dts device tree files.

== Compilation ==
see [[U-Boot_overview#U-Boot_build]]

With the defconfig file: {{HighlightParam|stm32mp15_trusted_defconfig}}

  {{PC$}} make {{HighlightParam|stm32mp15_trusted_defconfig}}
  {{PC$}} make DEVICE_TREE={{HighlightParam|<Device tree>}} all

The supported variables are:
* '''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

The ouput file is {{Highlight|'''u-boot.stm32'''}}.

== SPL compilation ==

The alternate boot chain with SPL is also supported by ''"stm32mp15_basic_defconfig"'' but only for [[U-Boot_SPL:_DDR_interactive_mode]]

The resulting U-Boot files are located in your build directory:
* '''u-boot-spl.stm32''' : FSBL = SPL binary with STM32 image header, loaded by ROM code
* '''u-boot.img''' : SSBL = U-Boot binary with U-Boot image header (uImage), loaded by SPL

{{Warning | This alternate boot chain with SPL is not supported/promoted by STMicroelectronics to make product.}} 

== Examples ==

=== {{Board | type=157F-EV1}} ===
  {{PC$}} make {{HighlightParam|stm32mp15_trusted_defconfig}}
  {{PC$}} make DEVICE_TREE={{HighlightParam|stm32mp157f-ev1}} all

=== {{Board | type=157C-EV1}} ===
  {{PC$}} make {{HighlightParam|stm32mp15_trusted_defconfig}}
  {{PC$}} make DEVICE_TREE={{HighlightParam|stm32mp157c-ev1}} all

=== {{Board | type=157D-DK1}} ===
  {{PC$}} make {{HighlightParam|stm32mp15_trusted_defconfig}}
  {{PC$}} make DEVICE_TREE={{HighlightParam|stm32mp157d-dk1}} all

=== {{Board | type=157C-DK2}} ===
Using export to select the device tree
  {{PC$}} export KBUILD_OUTPUT=../build/stm32mp15_trusted
  {{PC$}} export DEVICE_TREE={{HighlightParam|stm32mp157c-dk2}}
  {{PC$}} make {{HighlightParam|stm32mp15_trusted_defconfig}}
  {{PC$}} make all

=== Custom board with external device tree ===
  {{PC$}} make {{HighlightParam|stm32mp15_trusted_defconfig}}
  {{PC$}} make EXT_DTB={{HighlightParam|stm32mp151a-myboard.dtb}} all

=== SPL for {{Board | type=157F-EV1}} ===
  {{PC$}} make stm32mp15_basic_defconfig
  {{PC$}} make DEVICE_TREE={{HighlightParam|stm32mp157f-ev1}} all
<noinclude>

[[Category:U-Boot]]
{{PublicationRequestId | 12895 | 2019-08-01}}</noinclude>
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== Selecting targets : choose defconfig and Device Tree ==
  
== Selecting targets : choose defconfig and Device Tree ==
   
−
The [[Boot_chains_overview|STM32 MPU boot chain]] is supported by one [[U-Boot_overview#Kbuild|U-Boot configuration with defconfig]] = {{HighlightParam|stm32mp15_trusted_defconfig}}
 +
The [[Boot_chain_overview|STM32 MPU boot chain]] is supported by one [[U-Boot_overview#Kbuild|U-Boot configuration with defconfig]] = {{HighlightParam|stm32mp15_trusted_defconfig}}
   
 
Several [[STM32MP15_boards|boards]] are supported with the associated device-tree (same name as kernel):
  
Several [[STM32MP15_boards|boards]] are supported with the associated device-tree (same name as kernel):
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