soc/stm32: add initial support for STM32F3X series

Supported SoCs:
- STM32F303XC
- STM32F334X8
- STM32F373XC

Change-Id: I74b9561272d54e270ae1a1f602fd389d4c86539a
Signed-off-by: Adam Podogrocki <adam.podogrocki@rndity.com>

arch/arm/soc/st_stm32/stm32f3/soc.h

@@ -0,0 +1,63 @@
+/*
+ * Copyright (c) 2016 RnDity Sp. z o.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * @file SoC configuration macros for the STM32F3 family processors.
+ *
+ * Based on reference manual:
+ *   STM32F303xB/C/D/E, STM32F303x6/8, STM32F328x8, STM32F358xC,
+ *   STM32F398xE advanced ARM ® -based MCUs
+ *   STM32F37xx advanced ARM ® -based MCUs
+ *
+ * Chapter 3.3: Memory organization
+ */
+
+
+#ifndef _STM32F3_SOC_H_
+#define _STM32F3_SOC_H_
+
+#define GPIO_REG_SIZE         0x400
+/* base address for where GPIO registers start */
+#define GPIO_PORTS_BASE       (GPIOA_BASE)
+
+#ifndef _ASMLANGUAGE
+
+#include <device.h>
+#include <misc/util.h>
+#include <drivers/rand32.h>
+
+#include <stm32f3xx.h>
+
+/* IO pin functions */
+enum stm32f3x_pin_config_mode {
+	STM32F3X_PIN_CONFIG_BIAS_HIGH_IMPEDANCE = 0,
+	STM32F3X_PIN_CONFIG_BIAS_PULL_UP,
+	STM32F3X_PIN_CONFIG_BIAS_PULL_DOWN,
+	STM32F3X_PIN_CONFIG_ANALOG,
+	STM32F3X_PIN_CONFIG_DRIVE_OPEN_DRAIN,
+	STM32F3X_PIN_CONFIG_DRIVE_PUSH_PULL,
+	STM32F3X_PIN_CONFIG_DRIVE_OPEN_DRAIN_PU,
+	STM32F3X_PIN_CONFIG_DRIVE_OPEN_DRAIN_PD,
+	STM32F3X_PIN_CONFIG_DRIVE_PUSH_PULL_PU,
+	STM32F3X_PIN_CONFIG_DRIVE_PUSH_PULL_PD,
+	STM32F3X_PIN_CONFIG_AF,
+};
+
+#include "soc_irq.h"
+
+#endif /* !_ASMLANGUAGE */
+
+#endif /* _STM32F3_SOC_H_ */