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Commit 3ed71f8a authored by Ludovic Barre's avatar Ludovic Barre Committed by Alexandre Torgue
Browse files

ARM: stm32: prepare stm32 family to welcome armv7 architecture 



This patch prepares the STM32 machine for the integration of Cortex-A
based microprocessor (MPU), on top of the existing Cortex-M
microcontroller family (MCU). Since both MCUs and MPUs are sharing
common hardware blocks we can keep using ARCH_STM32 flag for most of
them. If a hardware block is specific to one family we can use either
ARM_SINGLE_ARMV7M or ARCH_MULTI_V7 flag.

Signed-off-by: default avatarLudovic Barre <ludovic.barre@st.com>
Signed-off-by: default avatarAlexandre Torgue <alexandre.torgue@st.com>
parent 40fed8d0

Documentation/arm/stm32/overview.rst

+9 −6
Original line number Diff line number Diff line
@@ -5,16 +5,17 @@ STM32 ARM Linux Overview 
Introduction

------------



The STMicroelectronics family of Cortex-M based MCUs are supported by the

'STM32' platform of ARM Linux. Currently only the STM32F429 (Cortex-M4)

and STM32F746 (Cortex-M7) are supported.

The STMicroelectronics STM32 family of Cortex-A microprocessors (MPUs) and

Cortex-M microcontrollers (MCUs) are supported by the 'STM32' platform of

ARM Linux.



Configuration

-------------



A generic configuration is provided for STM32 family, and can be used as the

default by

For MCUs, use the provided default configuration:

        make stm32_defconfig

For MPUs, use multi_v7 configuration:

        make multi_v7_defconfig



Layout

------
@@ -28,4 +29,6 @@ Device Trees. 


:Authors:



Maxime Coquelin <mcoquelin.stm32@gmail.com>
 
- Maxime Coquelin <mcoquelin.stm32@gmail.com>

- Ludovic Barre <ludovic.barre@st.com>

- Gerald Baeza <gerald.baeza@st.com>

arch/arm/mach-stm32/Kconfig

+15 −13
Original line number Diff line number Diff line 
config ARCH_STM32

	bool "STMicrolectronics STM32"

	depends on ARM_SINGLE_ARMV7M

menuconfig ARCH_STM32

	bool "STMicroelectronics STM32 family" if ARM_SINGLE_ARMV7M || ARCH_MULTI_V7

	select ARMV7M_SYSTICK if ARM_SINGLE_ARMV7M

	select ARCH_HAS_RESET_CONTROLLER

	select ARMV7M_SYSTICK

	select CLKSRC_STM32

	select PINCTRL

	select RESET_CONTROLLER
@@ -10,27 +9,30 @@ config ARCH_STM32 
	help

	  Support for STMicroelectronics STM32 processors.



if ARCH_STM32



if ARM_SINGLE_ARMV7M



config MACH_STM32F429

	bool "STMicrolectronics STM32F429"

	depends on ARCH_STM32

	bool "STMicroelectronics STM32F429"

	default y



config MACH_STM32F469

	bool "STMicrolectronics STM32F469"

	depends on ARCH_STM32

	bool "STMicroelectronics STM32F469"

	default y



config MACH_STM32F746

	bool "STMicrolectronics STM32F746"

	depends on ARCH_STM32

	bool "STMicroelectronics STM32F746"

	default y



config MACH_STM32F769

	bool "STMicroelectronics STM32F769"

	depends on ARCH_STM32

	default y



config MACH_STM32H743

	bool "STMicrolectronics STM32H743"

	depends on ARCH_STM32

	bool "STMicroelectronics STM32H743"

	default y



endif # ARMv7-M



endif

arch/arm/mach-stm32/board-dt.c

+0 −2
Original line number Diff line number Diff line
@@ -6,7 +6,6 @@ 
 */



#include <linux/kernel.h>

#include <asm/v7m.h>

#include <asm/mach/arch.h>



static const char *const stm32_compat[] __initconst = {
@@ -20,5 +19,4 @@ static const char *const stm32_compat[] __initconst = { 


DT_MACHINE_START(STM32DT, "STM32 (Device Tree Support)")

	.dt_compat = stm32_compat,

	.restart = armv7m_restart,

MACHINE_END