3 files changed, 96 insertions, 0 deletions
diff --git a/arch/arm/mach-stm32/Kconfig b/arch/arm/mach-stm32/Kconfig
new file mode 100644
index 000000000..981450315
--- /dev/null
+++ b/arch/arm/mach-stm32/Kconfig
@@ -0,0 +1,61 @@
+# SPDX-License-Identifier: GPL-2.0-only
+menuconfig ARCH_STM32
+	bool "STMicroelectronics STM32 family"
+	depends on ARM_SINGLE_ARMV7M || ARCH_MULTI_V7
+	select ARMV7M_SYSTICK if ARM_SINGLE_ARMV7M
+	select HAVE_ARM_ARCH_TIMER if ARCH_MULTI_V7
+	select ARM_GIC if ARCH_MULTI_V7
+	select ARM_PSCI if ARCH_MULTI_V7
+	select ARM_AMBA
+	select ARCH_HAS_RESET_CONTROLLER
+	select CLKSRC_STM32
+	select PINCTRL
+	select RESET_CONTROLLER
+	select STM32_EXTI
+	help
+	  Support for STMicroelectronics STM32 processors.
+
+if ARCH_STM32
+
+if ARM_SINGLE_ARMV7M
+
+config MACH_STM32F429
+	bool "STMicroelectronics STM32F429"
+	default y
+
+config MACH_STM32F469
+	bool "STMicroelectronics STM32F469"
+	default y
+
+config MACH_STM32F746
+	bool "STMicroelectronics STM32F746"
+	default y
+
+config MACH_STM32F769
+	bool "STMicroelectronics STM32F769"
+	default y
+
+config MACH_STM32H743
+	bool "STMicroelectronics STM32H743"
+	default y
+
+endif # ARMv7-M
+
+if ARCH_MULTI_V7
+
+config MACH_STM32MP157
+	bool "STMicroelectronics STM32MP157"
+	select ARM_ERRATA_814220
+	default y
+
+config MACH_STM32MP13
+	bool "STMicroelectronics STM32MP13x"
+	select ARM_ERRATA_814220
+	default y
+	help
+	  Support for STM32MP13 SoCs:
+	  STM32MP131, STM32MP133, STM32MP135
+
+endif # ARMv7-A
+
+endif
diff --git a/arch/arm/mach-stm32/Makefile b/arch/arm/mach-stm32/Makefile
new file mode 100644
index 000000000..c80d80c19
--- /dev/null
+++ b/arch/arm/mach-stm32/Makefile
@@ -0,0 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0-only
+obj-y += board-dt.o
diff --git a/arch/arm/mach-stm32/board-dt.c b/arch/arm/mach-stm32/board-dt.c
new file mode 100644
index 000000000..2ccaa11aa
--- /dev/null
+++ b/arch/arm/mach-stm32/board-dt.c
@@ -0,0 +1,33 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) Maxime Coquelin 2015
+ * Copyright (C) STMicroelectronics 2017
+ * Author:  Maxime Coquelin <mcoquelin.stm32@gmail.com>
+ */
+
+#include <linux/kernel.h>
+#include <asm/mach/arch.h>
+#ifdef CONFIG_ARM_SINGLE_ARMV7M
+#include <asm/v7m.h>
+#endif
+
+static const char *const stm32_compat[] __initconst = {
+	"st,stm32f429",
+	"st,stm32f469",
+	"st,stm32f746",
+	"st,stm32f769",
+	"st,stm32h743",
+	"st,stm32h750",
+	"st,stm32mp131",
+	"st,stm32mp133",
+	"st,stm32mp135",
+	"st,stm32mp157",
+	NULL
+};
+
+DT_MACHINE_START(STM32DT, "STM32 (Device Tree Support)")
+	.dt_compat = stm32_compat,
+#ifdef CONFIG_ARM_SINGLE_ARMV7M
+	.restart = armv7m_restart,
+#endif
+MACHINE_END