Add support for STM32L412.

hw/bsp/stm32l4/boards/stm32l412nucleo/STM32L412KBUx_FLASH.ld

@@ -0,0 +1,184 @@
+/*
+*****************************************************************************
+**
+
+**  File        : LinkerScript.ld
+**
+**  Abstract    : Linker script for STM32L412KBTx Device with
+**                128KByte FLASH, 40KByte RAM
+**
+**                Set heap size, stack size and stack location according
+**                to application requirements.
+**
+**                Set memory bank area and size if external memory is used.
+**
+**  Target      : STMicroelectronics STM32
+**
+**
+**  Distribution: The file is distributed as is, without any warranty
+**                of any kind.
+**
+**  (c)Copyright Ac6.
+**  You may use this file as-is or modify it according to the needs of your
+**  project. Distribution of this file (unmodified or modified) is not
+**  permitted. Ac6 permit registered System Workbench for MCU users the
+**  rights to distribute the assembled, compiled & linked contents of this
+**  file as part of an application binary file, provided that it is built
+**  using the System Workbench for MCU toolchain.
+**
+*****************************************************************************
+*/
+
+/* Entry Point */
+ENTRY(Reset_Handler)
+
+/* Highest address of the user mode stack */
+_estack = 0x20008000;    /* end of RAM */
+/* Generate a link error if heap and stack don't fit into RAM */
+_Min_Heap_Size = 0x200;      /* required amount of heap  */
+_Min_Stack_Size = 0x400; /* required amount of stack */
+
+/* Specify the memory areas */
+MEMORY
+{
+FLASH (rx)      : ORIGIN = 0x08000000, LENGTH = 128K
+RAM (xrw)      : ORIGIN = 0x20000000, LENGTH = 32K
+SRAM2 (xrw)      : ORIGIN = 0x10000000, LENGTH = 8K
+}
+
+/* Define output sections */
+SECTIONS
+{
+  /* The startup code goes first into FLASH */
+  .isr_vector :
+  {
+    . = ALIGN(8);
+    KEEP(*(.isr_vector)) /* Startup code */
+    . = ALIGN(8);
+  } >FLASH
+
+  /* The program code and other data goes into FLASH */
+  .text :
+  {
+    . = ALIGN(8);
+    *(.text)           /* .text sections (code) */
+    *(.text*)          /* .text* sections (code) */
+    *(.glue_7)         /* glue arm to thumb code */
+    *(.glue_7t)        /* glue thumb to arm code */
+    *(.eh_frame)
+
+    KEEP (*(.init))
+    KEEP (*(.fini))
+
+    . = ALIGN(8);
+    _etext = .;        /* define a global symbols at end of code */
+  } >FLASH
+
+  /* Constant data goes into FLASH */
+  .rodata :
+  {
+    . = ALIGN(8);
+    *(.rodata)         /* .rodata sections (constants, strings, etc.) */
+    *(.rodata*)        /* .rodata* sections (constants, strings, etc.) */
+    . = ALIGN(8);
+  } >FLASH
+
+  .ARM.extab   : 
+  { 
+  . = ALIGN(8);
+  *(.ARM.extab* .gnu.linkonce.armextab.*)
+  . = ALIGN(8);
+  } >FLASH
+  .ARM : {
+	. = ALIGN(8);
+    __exidx_start = .;
+    *(.ARM.exidx*)
+    __exidx_end = .;
+	. = ALIGN(8);
+  } >FLASH
+
+  .preinit_array     :
+  {
+	. = ALIGN(8);
+    PROVIDE_HIDDEN (__preinit_array_start = .);
+    KEEP (*(.preinit_array*))
+    PROVIDE_HIDDEN (__preinit_array_end = .);
+	. = ALIGN(8);
+  } >FLASH
+
+  .init_array :
+  {
+	. = ALIGN(8);
+    PROVIDE_HIDDEN (__init_array_start = .);
+    KEEP (*(SORT(.init_array.*)))
+    KEEP (*(.init_array*))
+    PROVIDE_HIDDEN (__init_array_end = .);
+	. = ALIGN(8);
+  } >FLASH
+  .fini_array :
+  {
+	. = ALIGN(8);
+    PROVIDE_HIDDEN (__fini_array_start = .);
+    KEEP (*(SORT(.fini_array.*)))
+    KEEP (*(.fini_array*))
+    PROVIDE_HIDDEN (__fini_array_end = .);
+	. = ALIGN(8);
+  } >FLASH
+
+  /* used by the startup to initialize data */
+  _sidata = LOADADDR(.data);
+
+  /* Initialized data sections goes into RAM, load LMA copy after code */
+  .data : 
+  {
+    . = ALIGN(8);
+    _sdata = .;        /* create a global symbol at data start */
+    *(.data)           /* .data sections */
+    *(.data*)          /* .data* sections */
+
+    . = ALIGN(8);
+    _edata = .;        /* define a global symbol at data end */
+  } >RAM AT> FLASH
+
+
+  /* Uninitialized data section */
+  . = ALIGN(4);
+  .bss :
+  {
+    /* This is used by the startup in order to initialize the .bss secion */
+    _sbss = .;         /* define a global symbol at bss start */
+    __bss_start__ = _sbss;
+    *(.bss)
+    *(.bss*)
+    *(COMMON)
+
+    . = ALIGN(4);
+    _ebss = .;         /* define a global symbol at bss end */
+    __bss_end__ = _ebss;
+  } >RAM
+
+  /* User_heap_stack section, used to check that there is enough RAM left */
+  ._user_heap_stack :
+  {
+    . = ALIGN(8);
+    PROVIDE ( end = . );
+    PROVIDE ( _end = . );
+    . = . + _Min_Heap_Size;
+    . = . + _Min_Stack_Size;
+    . = ALIGN(8);
+  } >RAM
+
+
+
+  /* Remove information from the standard libraries */
+  /DISCARD/ :
+  {
+    libc.a ( * )
+    libm.a ( * )
+    libgcc.a ( * )
+  }
+
+  .ARM.attributes 0 : { *(.ARM.attributes) }
+}
+
+

hw/bsp/stm32l4/boards/stm32l412nucleo/board.h

@@ -0,0 +1,141 @@
+/* 
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2020, Ha Thach (tinyusb.org)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * This file is part of the TinyUSB stack.
+ */
+
+#ifndef BOARD_H_
+#define BOARD_H_
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+#define LED_PORT              GPIOB
+#define LED_PIN               GPIO_PIN_3
+#define LED_STATE_ON          1
+
+// Not a real button
+#define BUTTON_PORT           GPIOB
+#define BUTTON_PIN            GPIO_PIN_0
+#define BUTTON_STATE_ACTIVE   1
+
+#define UART_DEV              LPUART1
+#define UART_CLK_EN           __HAL_RCC_LPUART1_CLK_ENABLE
+#define UART_GPIO_PORT        GPIOA
+#define UART_GPIO_AF          GPIO_AF8_LPUART1
+#define UART_TX_PIN           GPIO_PIN_2
+#define UART_RX_PIN           GPIO_PIN_3
+
+//--------------------------------------------------------------------+
+// RCC Clock
+//--------------------------------------------------------------------+
+
+/**
+  * @brief  System Clock Configuration
+  *         The system Clock is configured as follow :
+  *            System Clock source            = PLL (MSI)
+  *            SYSCLK(Hz)                     = 80000000
+  *            HCLK(Hz)                       = 80000000
+  *            AHB Prescaler                  = 1
+  *            APB1 Prescaler                 = 1
+  *            APB2 Prescaler                 = 1
+  *            MSI Frequency(Hz)              = 8000000
+  *            PLL_M                          = 1
+  *            PLL_N                          = 10
+  *            PLL_Q                          = 2
+  *            PLL_R                          = 2
+  *            VDD(V)                         = 3.3
+  * @param  None
+  * @retval None
+  */
+
+static inline void board_clock_init(void)
+{
+  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
+  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
+  RCC_CRSInitTypeDef RCC_CRSInitStruct = {0};
+  RCC_PeriphCLKInitTypeDef PeriphClkInitStruct = {0};
+
+  /** Configure the main internal regulator output voltage
+  */
+  HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE1);
+
+  /** Initializes the RCC Oscillators according to the specified parameters
+  * in the RCC_OscInitTypeDef structure.
+  */
+  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI48|RCC_OSCILLATORTYPE_HSI;
+  RCC_OscInitStruct.HSIState = RCC_HSI_ON;
+  RCC_OscInitStruct.HSI48State = RCC_HSI48_ON;
+  RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
+  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
+  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
+  RCC_OscInitStruct.PLL.PLLM = 1;
+  RCC_OscInitStruct.PLL.PLLN = 10;
+  RCC_OscInitStruct.PLL.PLLQ = RCC_PLLQ_DIV2;
+  RCC_OscInitStruct.PLL.PLLR = RCC_PLLR_DIV2;
+
+  HAL_RCC_OscConfig(&RCC_OscInitStruct);
+
+  /** Initializes the CPU, AHB and APB buses clocks
+  */
+  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
+                              |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
+  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
+  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
+  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
+  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
+
+  HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_4);
+
+  /** Enable the SYSCFG APB clock
+  */
+  __HAL_RCC_CRS_CLK_ENABLE();
+
+  /** Configures CRS
+  */
+  RCC_CRSInitStruct.Prescaler = RCC_CRS_SYNC_DIV1;
+  RCC_CRSInitStruct.Source = RCC_CRS_SYNC_SOURCE_USB;
+  RCC_CRSInitStruct.Polarity = RCC_CRS_SYNC_POLARITY_RISING;
+  RCC_CRSInitStruct.ReloadValue = __HAL_RCC_CRS_RELOADVALUE_CALCULATE(48000000,1000);
+  RCC_CRSInitStruct.ErrorLimitValue = 34;
+  RCC_CRSInitStruct.HSI48CalibrationValue = 32;
+
+  HAL_RCCEx_CRSConfig(&RCC_CRSInitStruct);
+
+  /* Select HSI48 output as USB clock source */
+  PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_USB;
+  PeriphClkInitStruct.UsbClockSelection = RCC_USBCLKSOURCE_HSI48;
+  HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct);
+
+  /* Select PLL output as UART clock source */
+  PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_LPUART1;
+  PeriphClkInitStruct.Lpuart1ClockSelection = RCC_LPUART1CLKSOURCE_PCLK1;
+  HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct);
+}
+
+#ifdef __cplusplus
+ }
+#endif
+
+#endif /* BOARD_H_ */

hw/bsp/stm32l4/boards/stm32l412nucleo/board.mk

@@ -0,0 +1,10 @@
+CFLAGS += \
+  -DSTM32L412xx \
+
+# All source paths should be relative to the top level.
+LD_FILE = $(BOARD_PATH)/STM32L412KBUx_FLASH.ld
+
+SRC_S += $(ST_CMSIS)/Source/Templates/gcc/startup_stm32l412xx.s
+
+# For flash-jlink target
+JLINK_DEVICE = stm32l412kb