mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-25 20:43:32 +00:00
e198d4fe7c
Add documentation for STM32 MCUs (F4, F7 and H7 series). Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com> Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
186 lines
5.3 KiB
ReStructuredText
186 lines
5.3 KiB
ReStructuredText
.. SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
|
|
.. sectionauthor:: Patrice Chotard <patrice.chotardy@foss.st.com>
|
|
|
|
STM32 MCU boards
|
|
=================
|
|
|
|
This is a quick instruction for setup STM32 MCU boards.
|
|
|
|
Supported devices
|
|
-----------------
|
|
|
|
U-Boot supports the following STMP32 MCU SoCs:
|
|
|
|
- STM32F429
|
|
- STM32F469
|
|
- STM32F746
|
|
- STM32F769
|
|
- STM32H743
|
|
- STM32H750
|
|
|
|
SoCs information:
|
|
-----------------
|
|
STM32F4 series are Cortex-M4 MCU.
|
|
STM32F7 and STM32H7 series are Cortex-M7 MCU.
|
|
|
|
+ STM32F4 series: https://www.st.com/en/microcontrollers-microprocessors/stm32f4-series.html
|
|
+ STM32F7 series: https://www.st.com/en/microcontrollers-microprocessors/stm32f7-series.html
|
|
+ STM32H7 series: https://www.st.com/en/microcontrollers-microprocessors/stm32h7-series.html
|
|
|
|
Currently the following boards are supported:
|
|
|
|
+ stm32f429-discovery
|
|
+ stm32f469-discovery
|
|
+ stm32746g-evaluation
|
|
+ stm32f746-discovery
|
|
+ stm32f769-discovery
|
|
+ stm32h743i-discovery
|
|
+ stm32h743i-evaluation
|
|
+ stm32h750i-art-pi
|
|
|
|
Boot Sequences
|
|
--------------
|
|
|
|
For STM32F7 series, 2 boot configurations are supported with and without SPL
|
|
|
|
+------------------------+-------------------------+--------------+
|
|
| **FSBL** | **SSBL** | **OS** |
|
|
+------------------------+-------------------------+--------------+
|
|
| First Stage Bootloader | Second Stage Bootloader | Linux Kernel |
|
|
+------------------------+-------------------------+--------------+
|
|
| embedded Flash | DDR |
|
|
+------------------------+-------------------------+--------------+
|
|
|
|
The boot chain with SPL
|
|
```````````````````````
|
|
|
|
defconfig_file :
|
|
+ **stm32746g-eval_spl_defconfig**
|
|
+ **stm32f746-disco_spl_defconfig**
|
|
+ **stm32f769-disco_spl_defconfig**
|
|
|
|
+------------+------------+-------+
|
|
| FSBL | SSBL | OS |
|
|
+------------+------------+-------+
|
|
|U-Boot SPL | U-Boot | Linux |
|
|
+------------+------------+-------+
|
|
|
|
The boot chain without SPL
|
|
``````````````````````````
|
|
|
|
defconfig_file :
|
|
+ **stm32f429-discovery_defconfig**
|
|
+ **stm32f429-evaluation_defconfig**
|
|
+ **stm32f469-discovery_defconfig**
|
|
+ **stm32746g-eval_defconfig**
|
|
+ **stm32f746-disco_defconfig**
|
|
+ **stm32f769-disco_defconfig**
|
|
+ **stm32h743-disco_defconfig**
|
|
+ **stm32h743-eval_defconfig**
|
|
+ **stm32h750-art-pi_defconfig**
|
|
|
|
+-----------+-------+
|
|
| FSBL | OS |
|
|
+-----------+-------+
|
|
|U-Boot | Linux |
|
|
+-----------+-------+
|
|
|
|
Build Procedure
|
|
---------------
|
|
|
|
1. Install the required tools for U-Boot
|
|
|
|
* install package needed in U-Boot makefile
|
|
(libssl-dev, swig, libpython-dev...)
|
|
|
|
* install ARMv7 toolchain for 32bit Cortex-A (from Linaro,
|
|
from SDK for STM32MP15x, or any crosstoolchains from your distribution)
|
|
(you can use any gcc cross compiler compatible with U-Boot)
|
|
|
|
2. Set the cross compiler::
|
|
|
|
# export CROSS_COMPILE=/path/to/toolchain/arm-linux-gnueabi-
|
|
|
|
3. Select the output directory (optional)::
|
|
|
|
# export KBUILD_OUTPUT=/path/to/output
|
|
|
|
for example: use one output directory for each configuration::
|
|
|
|
# export KBUILD_OUTPUT=stm32f4
|
|
# export KBUILD_OUTPUT=stm32f7
|
|
# export KBUILD_OUTPUT=stm32h7
|
|
|
|
you can build outside of code directory::
|
|
|
|
# export KBUILD_OUTPUT=../build/stm32f4
|
|
|
|
4. Configure U-Boot::
|
|
|
|
# make <defconfig_file>
|
|
|
|
For example with <defconfig_file>:
|
|
|
|
- For **stm32f429 discovery** board : **stm32f429-discovery_defconfig**
|
|
- For **stm32f769 discovery** board with SPL: **stm32f769-disco_spl_defconfig**
|
|
- For **stm32f769 discovery** board without SPL: **stm32f769-disco_defconfig**
|
|
|
|
5. Configure the device-tree and build the U-Boot image::
|
|
|
|
# make DEVICE_TREE=<name> all
|
|
|
|
Examples:
|
|
|
|
a) boot with SPL on stm32f746 discovery board::
|
|
|
|
# export KBUILD_OUTPUT=stm32f746-disco
|
|
# make stm32f746-disco_spl_defconfig
|
|
# make all
|
|
|
|
b) boot without SPL on stm32f746 discovery board::
|
|
|
|
# export KBUILD_OUTPUT=stm32f746-disco
|
|
# make stm32f746-disco_defconfig
|
|
# make all
|
|
|
|
c) boot on stm32h743 discovery board::
|
|
|
|
# export KBUILD_OUTPUT=stm32h743-disco
|
|
# make stm32h743-disco_defconfig
|
|
# make all
|
|
|
|
d) boot on stm32h743 evaluation board::
|
|
|
|
# export KBUILD_OUTPUT=stm32h743-disco
|
|
# make stm32h743-eval_defconfig
|
|
# make all
|
|
|
|
6. U-Boot Output files
|
|
|
|
So in the output directory (selected by KBUILD_OUTPUT),
|
|
you can found the needed U-Boot files, for example::
|
|
|
|
- stm32f746-disco_defconfig = **u-boot-dtb.bin** and **u-boot.dtb**
|
|
|
|
- FSBL = u-boot-dtb.bin
|
|
|
|
- stm32f746-disco_spl_defconfig = **u-boot-dtb.bin**, **u-boot.dtb** and **u-boot-with-spl.bin**
|
|
|
|
- FSBL + SSBL = u-boot-with-spl.bin
|
|
- SSBL = u-boot-dtb.bin
|
|
|
|
7. Flash U-Boot files
|
|
|
|
Plug STM32 MCUs board using the USB ST-Link connector, hence it will expose
|
|
the flash area as a mass-storage. In this mass-storage you will find the
|
|
following files:
|
|
|
|
- DETAILS.TXT: give the bootrom version and build
|
|
- MBED.HTM: shortcul to the hardware board description web page from st.com.
|
|
|
|
Copy/paste the u-boot.bin or u-boot-with-spl.bin (in case of bootchain with SPL)
|
|
to this mass-storage. The "COM" LED will blink alternatively red and green during
|
|
the flash process. When done the board will reboot automatically.
|
|
|
|
In case of boot with SPL, by default SPL will try to load either a Linux
|
|
kernel (falcon mode) or, if the key "c" is maintained pressed, the main U-Boot.
|