From: Ludovic Barre <ludovic.barre@xxxxxx>
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
ARCH_STM32_MCU or ARCH_STM32_MPU flag.
Signed-off-by: Ludovic Barre <ludovic.barre@xxxxxx>
---
Documentation/arm/stm32/overview.txt | 21 +++++++--------
arch/arm/mach-stm32/Kconfig | 30 +++++++++++++++-------
arch/arm/mach-stm32/Makefile | 2 +-
arch/arm/mach-stm32/{board-dt.c => board-mcu-dt.c} | 0
4 files changed, 33 insertions(+), 20 deletions(-)
rename arch/arm/mach-stm32/{board-dt.c => board-mcu-dt.c} (100%)
diff --git a/Documentation/arm/stm32/overview.txt b/Documentation/arm/stm32/overview.txt
index a03b035..384cc7f 100644
--- a/Documentation/arm/stm32/overview.txt
+++ b/Documentation/arm/stm32/overview.txt
@@ -4,17 +4,17 @@
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
------
@@ -22,12 +22,13 @@ Layout
All the files for multiple machine families are located in the platform code
contained in arch/arm/mach-stm32
- There is a generic board board-dt.c in the mach folder which support
- Flattened Device Tree, which means, it works with any compatible board with
- Device Trees.
-
+ There are generic boards board-mcu-dt.c and board-mpu-dt.c files in the mach
+ folder which support Flattened Device Tree, which means, they work with any
+ compatible board with Device Trees.
Document Author
---------------
Maxime Coquelin <mcoquelin.stm32@xxxxxxxxx>
+ Ludovic Barre <ludovic.barre@xxxxxx>
+ Gerald Baeza <gerald.baeza@xxxxxx>
diff --git a/arch/arm/mach-stm32/Kconfig b/arch/arm/mach-stm32/Kconfig
index 0d1889b..c8059ea 100644
--- a/arch/arm/mach-stm32/Kconfig
+++ b/arch/arm/mach-stm32/Kconfig
@@ -1,31 +1,43 @@
-config ARCH_STM32
- bool "STMicrolectronics STM32"
- depends on ARM_SINGLE_ARMV7M
+menuconfig ARCH_STM32
+ bool "STMicrolectronics STM32 family" if ARM_SINGLE_ARMV7M
select ARCH_HAS_RESET_CONTROLLER
- select ARMV7M_SYSTICK
select CLKSRC_STM32
select PINCTRL
select RESET_CONTROLLER
select STM32_EXTI
help
- Support for STMicroelectronics STM32 processors.
+ Support for STMicroelectronics STM32 MCU family
+
+if ARCH_STM32
+
+if ARM_SINGLE_ARMV7M
+
+config ARCH_STM32_MCU
+ bool "STMicrolectronics STM32 MCU"
+ select ARMV7M_SYSTICK
+ help
+ Support for STMicroelectronics STM32 Microcontrollers.
config MACH_STM32F429
bool "STMicrolectronics STM32F429"
- depends on ARCH_STM32
+ depends on ARCH_STM32_MCU
default y
config MACH_STM32F469
bool "STMicrolectronics STM32F469"
- depends on ARCH_STM32
+ depends on ARCH_STM32_MCU
default y
config MACH_STM32F746
bool "STMicrolectronics STM32F746"
- depends on ARCH_STM32
+ depends on ARCH_STM32_MCU
default y
config MACH_STM32H743
bool "STMicrolectronics STM32H743"
- depends on ARCH_STM32
+ depends on ARCH_STM32_MCU
default y
+
+endif
+
+endif
diff --git a/arch/arm/mach-stm32/Makefile b/arch/arm/mach-stm32/Makefile
index bd0b7b5..90c1b71 100644
--- a/arch/arm/mach-stm32/Makefile
+++ b/arch/arm/mach-stm32/Makefile
@@ -1 +1 @@
-obj-y += board-dt.o
+obj-$(CONFIG_ARCH_STM32_MCU) += board-mcu-dt.o
diff --git a/arch/arm/mach-stm32/board-dt.c b/arch/arm/mach-stm32/board-mcu-dt.c
similarity index 100%
rename from arch/arm/mach-stm32/board-dt.c
rename to arch/arm/mach-stm32/board-mcu-dt.c
--
2.7.4
--
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