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| author | Ludovic Barre <ludovic.barre@st.com> | 2018-02-27 09:05:18 +0100 |
|---|---|---|
| committer | Alexandre Torgue <alexandre.torgue@st.com> | 2018-03-05 09:08:35 +0100 |
| commit | 3ed71f8ad98a07803299693481b03fa6391e094f (patch) | |
| tree | f310ef918046eb6a163f96654d0cfb04c3de750e | |
| parent | 40fed8d0e3833200f4b9f7cd057e37d0450a5044 (diff) | |
| download | linux-3ed71f8ad98a07803299693481b03fa6391e094f.tar.gz linux-3ed71f8ad98a07803299693481b03fa6391e094f.tar.bz2 linux-3ed71f8ad98a07803299693481b03fa6391e094f.zip | |
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: Ludovic Barre <ludovic.barre@st.com>
Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>
| -rw-r--r-- | Documentation/arm/stm32/overview.rst | 15 | ||||
| -rw-r--r-- | arch/arm/mach-stm32/Kconfig | 28 | ||||
| -rw-r--r-- | arch/arm/mach-stm32/board-dt.c | 2 |
3 files changed, 24 insertions, 21 deletions
diff --git a/Documentation/arm/stm32/overview.rst b/Documentation/arm/stm32/overview.rst index 6be60592eaf7..85cfc8410798 100644 --- a/Documentation/arm/stm32/overview.rst +++ b/Documentation/arm/stm32/overview.rst @@ -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> diff --git a/arch/arm/mach-stm32/Kconfig b/arch/arm/mach-stm32/Kconfig index 33b07db3755d..1a876460c74d 100644 --- a/arch/arm/mach-stm32/Kconfig +++ b/arch/arm/mach-stm32/Kconfig @@ -1,8 +1,7 @@ -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 diff --git a/arch/arm/mach-stm32/board-dt.c b/arch/arm/mach-stm32/board-dt.c index 8c682f4a8ffc..6786f357851f 100644 --- a/arch/arm/mach-stm32/board-dt.c +++ b/arch/arm/mach-stm32/board-dt.c @@ -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 |