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<noinclude> | <noinclude>{{ApplicableFor | ||
{{ | |MPUs list=STM32MP13x, STM32MP15x | ||
|MPUs checklist=STM32MP13x, STM32MP15x | |||
}}</noinclude> | |||
}} | |||
</noinclude> | |||
==Article purpose== | ==Article purpose== | ||
The purpose of this article is to | The purpose of this article is to: | ||
* briefly introduce the | * briefly introduce the GIC peripheral and its main features, | ||
* indicate the | * indicate the peripheral instances assignment at boot time and their assignment at runtime (including whether instances can be allocated to secure contexts), | ||
* list the software frameworks and drivers managing the peripheral, | |||
* explain | * explain how to configure the peripheral. | ||
==Peripheral overview== | ==Peripheral overview== | ||
The '''GIC''' peripheral is the Arm<sup>®</sup> Cortex<sup>®</sup>-A7 interrupt controller. It is consequently not accessible from the Arm<sup>®</sup> Cortex<sup>®</sup>-M4 core. | The '''GIC''' peripheral is the Arm<sup>®</sup> Cortex<sup>®</sup>-A7 interrupt controller. <br> | ||
It is consequently not accessible from the Arm<sup>®</sup> Cortex<sup>®</sup>-M4 core on {{MicroprocessorDevice | device=15}}. | |||
Refer to the [[STM32 MPU resources#Reference manuals|STM32 MPU reference manuals]] for the complete list of features, and to the software frameworks and drivers, introduced below, to see which features are implemented. | |||
Refer to [[ | |||
== | ==Peripheral usage== | ||
This chapter is applicable in the scope of the '''OpenSTLinux BSP''' running on the Arm<sup>®</sup> Cortex<sup>®</sup>-A processor(s), and the '''STM32CubeMPU Package''' running on the Arm<sup>®</sup> Cortex<sup>®</sup>-M processor. | |||
== | ===Boot time assignment=== | ||
=== | ====On {{MicroprocessorDevice | device=1}}==== | ||
The GIC is | The GIC peripheral is not used at boot time. | ||
===Runtime=== | ===Runtime assignment=== | ||
==== | ====On {{MicroprocessorDevice | device=13}}==== | ||
{{#lst:STM32MP1_internal_peripherals_assignment_table_template|stm32mp13_runtime}} | |||
<section begin=stm32mp13_runtime /> | |||
| rowspan="1" | Core/Interrupts | |||
| rowspan="1" | [[GIC internal peripheral|GIC]] | |||
| GIC | |||
| <span title="system peripheral" style="font-size:21px">✓</span> | |||
| <span title="system peripheral" style="font-size:21px">✓</span> | |||
| | |||
|- | |||
<section end=stm32mp13_runtime /> | |||
|} | |||
==== | ====On {{MicroprocessorDevice | device=15}}==== | ||
{{: | {{#lst:STM32MP1_internal_peripherals_assignment_table_template|stm32mp15_runtime}} | ||
<section begin=stm32mp15_runtime /> | |||
| rowspan="1" | Core/Interrupts | |||
| rowspan="1" | [[GIC internal peripheral|GIC]] | |||
| GIC | |||
| <span title="system peripheral" style="font-size:21px">✓</span> | |||
| <span title="system peripheral" style="font-size:21px">✓</span> | |||
| | |||
| | |||
|- | |||
<section end=stm32mp15_runtime /> | |||
|} | |||
== | ==Software frameworks and drivers== | ||
Below are listed the software frameworks and drivers managing the GIC peripheral for the embedded software components listed in the above tables. | |||
* '''Linux<sup>®</sup>''': [[Interrupt overview|interrupt framework]] | |||
* '''OP-TEE''': | |||
< | ** driver: {{CodeSource | OP-TEE_OS | core/drivers/gic.c}} | ||
** header: {{CodeSource | OP-TEE_OS | core/include/drivers/gic.h}} | |||
==How to | ==How to assign and configure the peripheral== | ||
The peripheral assignment can be done via the [[STM32CubeMX]] graphical tool (and manually completed if needed).<br /> | |||
This tool also helps to configure the peripheral: | |||
* partial device trees (pin control and clock tree) generation for the OpenSTLinux software components, | |||
* HAL initialization code generation for the STM32CubeMPU Package. | |||
The configuration is applied by the firmware running in the context in which the peripheral is assigned. | |||
<noinclude> | |||
< | [[Category:Interrupts peripherals]] | ||
{{ArticleBasedOnModel| Internal peripheral article model}} | |||
{{PublicationRequestId | 8313 | 2018-08-02 | AnneJ}} | |||
</noinclude> | |||
Revision as of 14:34, 7 June 2023
1. Article purpose[edit | edit source]
The purpose of this article is to:
- briefly introduce the GIC peripheral and its main features,
- indicate the peripheral instances assignment at boot time and their assignment at runtime (including whether instances can be allocated to secure contexts),
- list the software frameworks and drivers managing the peripheral,
- explain how to configure the peripheral.
2. Peripheral overview[edit | edit source]
The GIC peripheral is the Arm® Cortex®-A7 interrupt controller.
It is consequently not accessible from the Arm® Cortex®-M4 core on STM32MP15x lines 
.
Refer to the STM32 MPU reference manuals for the complete list of features, and to the software frameworks and drivers, introduced below, to see which features are implemented.
3. Peripheral usage[edit | edit source]
This chapter is applicable in the scope of the OpenSTLinux BSP running on the Arm® Cortex®-A processor(s), and the STM32CubeMPU Package running on the Arm® Cortex®-M processor.
3.1. Boot time assignment[edit | edit source]
3.1.1. On STM32MP1 series[edit | edit source]
The GIC peripheral is not used at boot time.
3.2. Runtime assignment[edit | edit source]
3.2.1. On STM32MP13x lines [edit | edit source]
Click on 
to expand or collapse the legend...
| Domain | Peripheral | Runtime allocation | Comment
| ||
|---|---|---|---|---|---|
| Instance | Cortex-A7 secure (OP-TEE) |
Cortex-A7 nonsecure (Linux) | |||
| Core/Interrupts | GIC | GIC | ✓ | ✓ | |
3.2.2. On STM32MP15x lines [edit | edit source]
Click on to expand or collapse the legend...
| Domain | Peripheral | Runtime allocation | Comment
| |||
|---|---|---|---|---|---|---|
| Instance | Cortex-A7 secure (OP-TEE) |
Cortex-A7 nonsecure (Linux) |
Cortex-M4 (STM32Cube) | |||
| Core/Interrupts | GIC | GIC | ✓ | ✓ | ||
4. Software frameworks and drivers[edit | edit source]
Below are listed the software frameworks and drivers managing the GIC peripheral for the embedded software components listed in the above tables.
- Linux®: interrupt framework
- OP-TEE:
- driver: core/drivers/gic.c
- header: core/include/drivers/gic.h
5. How to assign and configure the peripheral[edit | edit source]
The peripheral assignment can be done via the STM32CubeMX graphical tool (and manually completed if needed).
This tool also helps to configure the peripheral:
- partial device trees (pin control and clock tree) generation for the OpenSTLinux software components,
- HAL initialization code generation for the STM32CubeMPU Package.
The configuration is applied by the firmware running in the context in which the peripheral is assigned. Template:ArticleBasedOnModel
Arm® is a registered trademark of Arm Limited (or its subsidiaries) in the US and/or elsewhere. 