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hw/arm: Add minimal support for the B-L475E-IOT01A board

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This commit adds a new B-L475E-IOT01A board using the STM32L475VG SoC
as well as a dedicated documentation file.
The implementation is derived from the Netduino Plus 2 machine.
There are no peripherals implemented yet, only memory regions.

Tested-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Arnaud Minier <arnaud.minier@telecom-paris.fr>
Signed-off-by: Inès Varhol <ines.varhol@telecom-paris.fr>
Message-id: 20240108135849.351719-3-ines.varhol@telecom-paris.fr
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Inès Varhol
2024-01-08 14:58:29 +01:00
committed by Peter Maydell
parent 04a7c7b130
commit 41581f1361
8 changed files with 138 additions and 2 deletions
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46
docs/system/arm/b-l475e-iot01a.rst Normal file
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@ -0,0 +1,46 @@
B-L475E-IOT01A IoT Node (``b-l475e-iot01a``)
============================================
The B-L475E-IOT01A IoT Node uses the STM32L475VG SoC which is based on
ARM Cortex-M4F core. It is part of STMicroelectronics
:doc:`STM32 boards </system/arm/stm32>` and more specifically the STM32L4
ultra-low power series. The STM32L4x5 chip runs at up to 80 MHz and
integrates 128 KiB of SRAM and up to 1MiB of Flash. The B-L475E-IOT01A board
namely features 64 Mibit QSPI Flash, BT, WiFi and RF connectivity,
USART, I2C, SPI, CAN and USB OTG, as well as a variety of sensors.
Supported devices
"""""""""""""""""
Currently, B-L475E-IOT01A machine's implementation is minimal,
it only supports the following device:
- Cortex-M4F based STM32L4x5 SoC
Missing devices
"""""""""""""""
The B-L475E-IOT01A does *not* support the following devices:
- Extended interrupts and events controller (EXTI)
- Reset and clock control (RCC)
- Serial ports (UART)
- System configuration controller (SYSCFG)
- General-purpose I/Os (GPIO)
- Analog to Digital Converter (ADC)
- SPI controller
- Timer controller (TIMER)
See the complete list of unimplemented peripheral devices
in the STM32L4x5 module : ``./hw/arm/stm32l4x5_soc.c``
Boot options
""""""""""""
The B-L475E-IOT01A machine can be started using the ``-kernel``
option to load a firmware. Example:
.. code-block:: bash
$ qemu-system-arm -M b-l475e-iot01a -kernel firmware.bin

6
docs/system/arm/stm32.rst
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@ -16,11 +16,13 @@ based on this chip :
- ``netduino2`` Netduino 2 board with STM32F205RFT6 microcontroller
The STM32F4 series is based on ARM Cortex-M4F core. This series is pin-to-pin
compatible with STM32F2 series. The following machines are based on this chip :
The STM32F4 series is based on ARM Cortex-M4F core, as well as the STM32L4
ultra-low-power series. The STM32F4 series is pin-to-pin compatible with STM32F2 series.
The following machines are based on this ARM Cortex-M4F chip :
- ``netduinoplus2`` Netduino Plus 2 board with STM32F405RGT6 microcontroller
- ``olimex-stm32-h405`` Olimex STM32 H405 board with STM32F405RGT6 microcontroller
- ``b-l475e-iot01a`` :doc:`B-L475E-IOT01A IoT Node </system/arm/b-l475e-iot01a>` board with STM32L475VG microcontroller
There are many other STM32 series that are currently not supported by QEMU.

1
docs/system/target-arm.rst
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@ -84,6 +84,7 @@ undocumented; you can get a complete list by running
arm/vexpress
arm/aspeed
arm/bananapi_m2u.rst
arm/b-l475e-iot01a.rst
arm/sabrelite
arm/digic
arm/cubieboard