initial commit

third_party/tinyusb/hw/bsp/stm32f4/boards/feather_stm32f405/STM32F405RGTx_FLASH.ld

@@ -0,0 +1,187 @@
+/*
+*****************************************************************************
+**
+
+**  File        : LinkerScript.ld
+**
+**  Abstract    : Linker script for STM32F405RGTx Device with
+**                1024KByte FLASH, 128KByte 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 = 0x20020000;    /* 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
+{
+RAM (xrw)      : ORIGIN = 0x20000000, LENGTH = 128K
+CCMRAM (rw)      : ORIGIN = 0x10000000, LENGTH = 64K
+FLASH (rx)      : ORIGIN = 0x8000000, LENGTH = 1024K
+}
+
+/* Define output sections */
+SECTIONS
+{
+  /* The startup code goes first into FLASH */
+  .isr_vector :
+  {
+    . = ALIGN(4);
+    KEEP(*(.isr_vector)) /* Startup code */
+    . = ALIGN(4);
+  } >FLASH
+
+  /* The program code and other data goes into FLASH */
+  .text :
+  {
+    . = ALIGN(4);
+    *(.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(4);
+    _etext = .;        /* define a global symbols at end of code */
+  } >FLASH
+
+  /* Constant data goes into FLASH */
+  .rodata :
+  {
+    . = ALIGN(4);
+    *(.rodata)         /* .rodata sections (constants, strings, etc.) */
+    *(.rodata*)        /* .rodata* sections (constants, strings, etc.) */
+    . = ALIGN(4);
+  } >FLASH
+
+  .ARM.extab   : { *(.ARM.extab* .gnu.linkonce.armextab.*) } >FLASH
+  .ARM : {
+    __exidx_start = .;
+    *(.ARM.exidx*)
+    __exidx_end = .;
+  } >FLASH
+
+  .preinit_array     :
+  {
+    PROVIDE_HIDDEN (__preinit_array_start = .);
+    KEEP (*(.preinit_array*))
+    PROVIDE_HIDDEN (__preinit_array_end = .);
+  } >FLASH
+  .init_array :
+  {
+    PROVIDE_HIDDEN (__init_array_start = .);
+    KEEP (*(SORT(.init_array.*)))
+    KEEP (*(.init_array*))
+    PROVIDE_HIDDEN (__init_array_end = .);
+  } >FLASH
+  .fini_array :
+  {
+    PROVIDE_HIDDEN (__fini_array_start = .);
+    KEEP (*(SORT(.fini_array.*)))
+    KEEP (*(.fini_array*))
+    PROVIDE_HIDDEN (__fini_array_end = .);
+  } >FLASH
+
+  /* used by the startup to initialize data */
+  _sidata = LOADADDR(.data);
+
+  /* Initialized data sections goes into RAM, load LMA copy after code */
+  .data :
+  {
+    . = ALIGN(4);
+    _sdata = .;        /* create a global symbol at data start */
+    *(.data)           /* .data sections */
+    *(.data*)          /* .data* sections */
+
+    . = ALIGN(4);
+    _edata = .;        /* define a global symbol at data end */
+  } >RAM AT> FLASH
+
+  _siccmram = LOADADDR(.ccmram);
+
+  /* CCM-RAM section
+  *
+  * IMPORTANT NOTE!
+  * If initialized variables will be placed in this section,
+  * the startup code needs to be modified to copy the init-values.
+  */
+  .ccmram :
+  {
+    . = ALIGN(4);
+    _sccmram = .;       /* create a global symbol at ccmram start */
+    *(.ccmram)
+    *(.ccmram*)
+
+    . = ALIGN(4);
+    _eccmram = .;       /* create a global symbol at ccmram end */
+  } >CCMRAM AT> FLASH
+
+
+  /* Uninitialized data section */
+  . = ALIGN(4);
+  .bss :
+  {
+    /* This is used by the startup in order to initialize the .bss section */
+    _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) }
+}

third_party/tinyusb/hw/bsp/stm32f4/boards/feather_stm32f405/board.cmake

@@ -0,0 +1,10 @@
+set(MCU_VARIANT stm32f405xx)
+set(JLINK_DEVICE stm32f405rg)
+
+set(LD_FILE_GNU ${CMAKE_CURRENT_LIST_DIR}/STM32F405RGTx_FLASH.ld)
+
+function(update_board TARGET)
+  target_compile_definitions(${TARGET} PUBLIC
+    STM32F405xx
+    )
+endfunction()

third_party/tinyusb/hw/bsp/stm32f4/boards/feather_stm32f405/board.h

@@ -0,0 +1,117 @@
+/*
+ * 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.
+ */
+
+/* metadata:
+   name: Adafruit Feather STM32F405
+   url: https://www.adafruit.com/product/4382
+*/
+
+#ifndef BOARD_H_
+#define BOARD_H_
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+#define UART_ID               3
+
+#define PINID_LED      0
+#define PINID_BUTTON   1
+#define PINID_UART_TX  2
+#define PINID_UART_RX  3
+
+#define VBUS_SENSE_EN  1
+
+static board_pindef_t board_pindef[] = {
+  { // LED
+    .port = GPIOC,
+    .pin_init = { .Pin = GPIO_PIN_1, .Mode = GPIO_MODE_OUTPUT_PP, .Pull = GPIO_PULLDOWN, .Speed = GPIO_SPEED_HIGH, .Alternate = 0 },
+    .active_state = 1
+  },
+  { // BUTTON
+    .port = GPIOC,
+    .pin_init = { .Pin = GPIO_PIN_7, .Mode = GPIO_MODE_INPUT, .Pull = GPIO_PULLUP, .Speed = GPIO_SPEED_HIGH, .Alternate = 0 },
+    .active_state = 0
+  },
+  { // UART TX
+    .port = GPIOB,
+    .pin_init = { .Pin = GPIO_PIN_10, .Mode = GPIO_MODE_AF_PP, .Pull = GPIO_PULLUP, .Speed = GPIO_SPEED_HIGH, .Alternate = GPIO_AF7_USART3 },
+    .active_state = 0
+  },
+  { // UART RX
+    .port = GPIOB,
+    .pin_init = { .Pin = GPIO_PIN_11, .Mode = GPIO_MODE_AF_PP, .Pull = GPIO_PULLUP, .Speed = GPIO_SPEED_HIGH, .Alternate = GPIO_AF7_USART3 },
+    .active_state = 0
+  },
+};
+
+//--------------------------------------------------------------------+
+// RCC Clock
+//--------------------------------------------------------------------+
+static inline void board_clock_init(void)
+{
+  RCC_ClkInitTypeDef RCC_ClkInitStruct;
+  RCC_OscInitTypeDef RCC_OscInitStruct;
+
+  /* Enable Power Control clock */
+  __HAL_RCC_PWR_CLK_ENABLE();
+
+  /* The voltage scaling allows optimizing the power consumption when the device is
+     clocked below the maximum system frequency, to update the voltage scaling value
+     regarding system frequency refer to product datasheet.  */
+  __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
+
+  /* Enable HSE Oscillator and activate PLL with HSE as source */
+  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
+  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
+  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
+  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
+  RCC_OscInitStruct.PLL.PLLM = HSE_VALUE/1000000;
+  RCC_OscInitStruct.PLL.PLLN = 336;
+  RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
+  RCC_OscInitStruct.PLL.PLLQ = 7;
+  HAL_RCC_OscConfig(&RCC_OscInitStruct);
+
+  /* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2
+     clocks dividers */
+  RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);
+  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
+  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
+  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
+  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;
+  HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5);
+
+}
+
+static inline void board_vbus_set(uint8_t rhport, bool state) {
+  (void) rhport; (void) state;
+}
+
+#ifdef __cplusplus
+ }
+#endif
+
+#endif /* BOARD_H_ */

third_party/tinyusb/hw/bsp/stm32f4/boards/feather_stm32f405/board.mk

@@ -0,0 +1,13 @@
+CFLAGS += -DSTM32F405xx
+
+# GCC
+SRC_S += $(ST_CMSIS)/Source/Templates/gcc/startup_stm32f405xx.s
+LD_FILE = $(BOARD_PATH)/STM32F405RGTx_FLASH.ld
+
+
+# For flash-jlink target
+JLINK_DEVICE = stm32f405rg
+
+# flash target ROM bootloader
+flash: $(BUILD)/$(PROJECT).bin
+	dfu-util -R -a 0 --dfuse-address 0x08000000 -D $<

third_party/tinyusb/hw/bsp/stm32f4/boards/pyboardv11/STM32F405RGTx_FLASH.ld

@@ -0,0 +1,187 @@
+/*
+*****************************************************************************
+**
+
+**  File        : LinkerScript.ld
+**
+**  Abstract    : Linker script for STM32F405RGTx Device with
+**                1024KByte FLASH, 128KByte 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 = 0x20020000;    /* 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
+{
+RAM (xrw)      : ORIGIN = 0x20000000, LENGTH = 128K
+CCMRAM (rw)      : ORIGIN = 0x10000000, LENGTH = 64K
+FLASH (rx)      : ORIGIN = 0x8000000, LENGTH = 1024K
+}
+
+/* Define output sections */
+SECTIONS
+{
+  /* The startup code goes first into FLASH */
+  .isr_vector :
+  {
+    . = ALIGN(4);
+    KEEP(*(.isr_vector)) /* Startup code */
+    . = ALIGN(4);
+  } >FLASH
+
+  /* The program code and other data goes into FLASH */
+  .text :
+  {
+    . = ALIGN(4);
+    *(.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(4);
+    _etext = .;        /* define a global symbols at end of code */
+  } >FLASH
+
+  /* Constant data goes into FLASH */
+  .rodata :
+  {
+    . = ALIGN(4);
+    *(.rodata)         /* .rodata sections (constants, strings, etc.) */
+    *(.rodata*)        /* .rodata* sections (constants, strings, etc.) */
+    . = ALIGN(4);
+  } >FLASH
+
+  .ARM.extab   : { *(.ARM.extab* .gnu.linkonce.armextab.*) } >FLASH
+  .ARM : {
+    __exidx_start = .;
+    *(.ARM.exidx*)
+    __exidx_end = .;
+  } >FLASH
+
+  .preinit_array     :
+  {
+    PROVIDE_HIDDEN (__preinit_array_start = .);
+    KEEP (*(.preinit_array*))
+    PROVIDE_HIDDEN (__preinit_array_end = .);
+  } >FLASH
+  .init_array :
+  {
+    PROVIDE_HIDDEN (__init_array_start = .);
+    KEEP (*(SORT(.init_array.*)))
+    KEEP (*(.init_array*))
+    PROVIDE_HIDDEN (__init_array_end = .);
+  } >FLASH
+  .fini_array :
+  {
+    PROVIDE_HIDDEN (__fini_array_start = .);
+    KEEP (*(SORT(.fini_array.*)))
+    KEEP (*(.fini_array*))
+    PROVIDE_HIDDEN (__fini_array_end = .);
+  } >FLASH
+
+  /* used by the startup to initialize data */
+  _sidata = LOADADDR(.data);
+
+  /* Initialized data sections goes into RAM, load LMA copy after code */
+  .data :
+  {
+    . = ALIGN(4);
+    _sdata = .;        /* create a global symbol at data start */
+    *(.data)           /* .data sections */
+    *(.data*)          /* .data* sections */
+
+    . = ALIGN(4);
+    _edata = .;        /* define a global symbol at data end */
+  } >RAM AT> FLASH
+
+  _siccmram = LOADADDR(.ccmram);
+
+  /* CCM-RAM section
+  *
+  * IMPORTANT NOTE!
+  * If initialized variables will be placed in this section,
+  * the startup code needs to be modified to copy the init-values.
+  */
+  .ccmram :
+  {
+    . = ALIGN(4);
+    _sccmram = .;       /* create a global symbol at ccmram start */
+    *(.ccmram)
+    *(.ccmram*)
+
+    . = ALIGN(4);
+    _eccmram = .;       /* create a global symbol at ccmram end */
+  } >CCMRAM AT> FLASH
+
+
+  /* Uninitialized data section */
+  . = ALIGN(4);
+  .bss :
+  {
+    /* This is used by the startup in order to initialize the .bss section */
+    _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) }
+}

third_party/tinyusb/hw/bsp/stm32f4/boards/pyboardv11/board.cmake

@@ -0,0 +1,10 @@
+set(MCU_VARIANT stm32f405xx)
+set(JLINK_DEVICE stm32f405rg)
+
+set(LD_FILE_GNU ${CMAKE_CURRENT_LIST_DIR}/STM32F405RGTx_FLASH.ld)
+
+function(update_board TARGET)
+  target_compile_definitions(${TARGET} PUBLIC
+    STM32F405xx
+    )
+endfunction()

third_party/tinyusb/hw/bsp/stm32f4/boards/pyboardv11/board.h

@@ -0,0 +1,117 @@
+/*
+ * 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.
+ */
+
+/* metadata:
+   name: Pyboard v1.1
+   url: https://www.adafruit.com/product/2390
+*/
+
+#ifndef BOARD_H_
+#define BOARD_H_
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+#define UART_ID               2
+
+#define PINID_LED      0
+#define PINID_BUTTON   1
+#define PINID_UART_TX  2
+#define PINID_UART_RX  3
+
+#define VBUS_SENSE_EN  1
+
+static board_pindef_t board_pindef[] = {
+  { // LED
+    .port = GPIOB,
+    .pin_init = { .Pin = GPIO_PIN_4, .Mode = GPIO_MODE_OUTPUT_PP, .Pull = GPIO_PULLDOWN, .Speed = GPIO_SPEED_HIGH, .Alternate = 0 },
+    .active_state = 1
+  },
+  { // BUTTON
+    .port = GPIOB,
+    .pin_init = { .Pin = GPIO_PIN_3, .Mode = GPIO_MODE_INPUT, .Pull = GPIO_PULLDOWN, .Speed = GPIO_SPEED_HIGH, .Alternate = 0 },
+    .active_state = 1
+  },
+  { // UART TX
+    .port = GPIOA,
+    .pin_init = { .Pin = GPIO_PIN_2, .Mode = GPIO_MODE_AF_PP, .Pull = GPIO_PULLUP, .Speed = GPIO_SPEED_HIGH, .Alternate = GPIO_AF7_USART2 },
+    .active_state = 0
+  },
+  { // UART RX
+    .port = GPIOA,
+    .pin_init = { .Pin = GPIO_PIN_3, .Mode = GPIO_MODE_AF_PP, .Pull = GPIO_PULLUP, .Speed = GPIO_SPEED_HIGH, .Alternate = GPIO_AF7_USART2 },
+    .active_state = 0
+  },
+};
+
+//--------------------------------------------------------------------+
+// RCC Clock
+//--------------------------------------------------------------------+
+static inline void board_clock_init(void)
+{
+  RCC_ClkInitTypeDef RCC_ClkInitStruct;
+  RCC_OscInitTypeDef RCC_OscInitStruct;
+
+  /* Enable Power Control clock */
+  __HAL_RCC_PWR_CLK_ENABLE();
+
+  /* The voltage scaling allows optimizing the power consumption when the device is
+     clocked below the maximum system frequency, to update the voltage scaling value
+     regarding system frequency refer to product datasheet.  */
+  __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
+
+  /* Enable HSE Oscillator and activate PLL with HSE as source */
+  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
+  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
+  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
+  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
+  RCC_OscInitStruct.PLL.PLLM = HSE_VALUE/1000000;
+  RCC_OscInitStruct.PLL.PLLN = 336;
+  RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
+  RCC_OscInitStruct.PLL.PLLQ = 7;
+  HAL_RCC_OscConfig(&RCC_OscInitStruct);
+
+  /* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2
+     clocks dividers */
+  RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);
+  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
+  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
+  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
+  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;
+  HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5);
+
+}
+
+static inline void board_vbus_set(uint8_t rhport, bool state) {
+  (void) rhport; (void) state;
+}
+
+#ifdef __cplusplus
+ }
+#endif
+
+#endif /* BOARD_H_ */

third_party/tinyusb/hw/bsp/stm32f4/boards/pyboardv11/board.mk

@@ -0,0 +1,12 @@
+CFLAGS += -DSTM32F405xx
+
+# GCC
+SRC_S += $(ST_CMSIS)/Source/Templates/gcc/startup_stm32f405xx.s
+LD_FILE = $(BOARD_PATH)/STM32F405RGTx_FLASH.ld
+
+
+# For flash-jlink target
+JLINK_DEVICE = stm32f405rg
+
+# flash target using on-board stlink
+flash: flash-stlink

third_party/tinyusb/hw/bsp/stm32f4/boards/stm32f401blackpill/STM32F401VCTx_FLASH.ld

@@ -0,0 +1,167 @@
+/*
+*****************************************************************************
+**
+
+**  File        : LinkerScript.ld
+**
+**  Abstract    : Linker script for STM32F401VCTx Device with
+**                256KByte FLASH, 64KByte 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 = 0x20010000;    /* 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 = 256K
+RAM (xrw)      : ORIGIN = 0x20000000, LENGTH = 64K
+}
+
+/* Define output sections */
+SECTIONS
+{
+  /* The startup code goes first into FLASH */
+  .isr_vector :
+  {
+    . = ALIGN(4);
+    KEEP(*(.isr_vector)) /* Startup code */
+    . = ALIGN(4);
+  } >FLASH
+
+  /* The program code and other data goes into FLASH */
+  .text :
+  {
+    . = ALIGN(4);
+    *(.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(4);
+    _etext = .;        /* define a global symbols at end of code */
+  } >FLASH
+
+  /* Constant data goes into FLASH */
+  .rodata :
+  {
+    . = ALIGN(4);
+    *(.rodata)         /* .rodata sections (constants, strings, etc.) */
+    *(.rodata*)        /* .rodata* sections (constants, strings, etc.) */
+    . = ALIGN(4);
+  } >FLASH
+
+  .ARM.extab   : { *(.ARM.extab* .gnu.linkonce.armextab.*) } >FLASH
+  .ARM : {
+    __exidx_start = .;
+    *(.ARM.exidx*)
+    __exidx_end = .;
+  } >FLASH
+
+  .preinit_array     :
+  {
+    PROVIDE_HIDDEN (__preinit_array_start = .);
+    KEEP (*(.preinit_array*))
+    PROVIDE_HIDDEN (__preinit_array_end = .);
+  } >FLASH
+  .init_array :
+  {
+    PROVIDE_HIDDEN (__init_array_start = .);
+    KEEP (*(SORT(.init_array.*)))
+    KEEP (*(.init_array*))
+    PROVIDE_HIDDEN (__init_array_end = .);
+  } >FLASH
+  .fini_array :
+  {
+    PROVIDE_HIDDEN (__fini_array_start = .);
+    KEEP (*(SORT(.fini_array.*)))
+    KEEP (*(.fini_array*))
+    PROVIDE_HIDDEN (__fini_array_end = .);
+  } >FLASH
+
+  /* used by the startup to initialize data */
+  _sidata = LOADADDR(.data);
+
+  /* Initialized data sections goes into RAM, load LMA copy after code */
+  .data :
+  {
+    . = ALIGN(4);
+    _sdata = .;        /* create a global symbol at data start */
+    *(.data)           /* .data sections */
+    *(.data*)          /* .data* sections */
+
+    . = ALIGN(4);
+    _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 section */
+    _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) }
+}

third_party/tinyusb/hw/bsp/stm32f4/boards/stm32f401blackpill/board.cmake

@@ -0,0 +1,10 @@
+set(MCU_VARIANT stm32f401xc)
+set(JLINK_DEVICE stm32f401cc)
+
+set(LD_FILE_GNU ${CMAKE_CURRENT_LIST_DIR}/STM32F401VCTx_FLASH.ld)
+
+function(update_board TARGET)
+  target_compile_definitions(${TARGET} PUBLIC
+    STM32F405xx
+    )
+endfunction()

third_party/tinyusb/hw/bsp/stm32f4/boards/stm32f401blackpill/board.h

@@ -0,0 +1,118 @@
+/*
+ * 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.
+ */
+
+/* metadata:
+   name: STM32 F401 Blackpill
+   url: https://stm32-base.org/boards/STM32F401CCU6-WeAct-Black-Pill-V1.2
+*/
+
+#ifndef BOARD_H_
+#define BOARD_H_
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+// Enable PA2 as the debug log UART
+#define UART_ID               2
+
+#define PINID_LED      0
+#define PINID_BUTTON   1
+#define PINID_UART_TX  2
+#define PINID_UART_RX  3
+
+#define VBUS_SENSE_EN  0
+
+static board_pindef_t board_pindef[] = {
+  { // LED
+    .port = GPIOC,
+    .pin_init = { .Pin = GPIO_PIN_13, .Mode = GPIO_MODE_OUTPUT_PP, .Pull = GPIO_PULLUP, .Speed = GPIO_SPEED_HIGH, .Alternate = 0 },
+    .active_state = 0
+  },
+  { // BUTTON
+    .port = GPIOA,
+    .pin_init = { .Pin = GPIO_PIN_0, .Mode = GPIO_MODE_INPUT, .Pull = GPIO_PULLUP, .Speed = GPIO_SPEED_HIGH, .Alternate = 0 },
+    .active_state = 0
+  },
+  { // UART TX
+    .port = GPIOA,
+    .pin_init = { .Pin = GPIO_PIN_2, .Mode = GPIO_MODE_AF_PP, .Pull = GPIO_PULLUP, .Speed = GPIO_SPEED_HIGH, .Alternate = GPIO_AF7_USART2 },
+    .active_state = 0
+  },
+  { // UART RX
+    .port = GPIOA,
+    .pin_init = { .Pin = GPIO_PIN_3, .Mode = GPIO_MODE_AF_PP, .Pull = GPIO_PULLUP, .Speed = GPIO_SPEED_HIGH, .Alternate = GPIO_AF7_USART2 },
+    .active_state = 0
+  },
+};
+
+//--------------------------------------------------------------------+
+// RCC Clock
+//--------------------------------------------------------------------+
+static inline void board_clock_init(void)
+{
+  RCC_ClkInitTypeDef RCC_ClkInitStruct;
+  RCC_OscInitTypeDef RCC_OscInitStruct;
+
+  /* Enable Power Control clock */
+  __HAL_RCC_PWR_CLK_ENABLE();
+
+  /* The voltage scaling allows optimizing the power consumption when the device is
+     clocked below the maximum system frequency, to update the voltage scaling value
+     regarding system frequency refer to product datasheet.  */
+  __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE2);
+
+  /* Enable HSE Oscillator and activate PLL with HSE as source */
+  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
+  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
+  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
+  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
+  RCC_OscInitStruct.PLL.PLLM = HSE_VALUE/1000000;
+  RCC_OscInitStruct.PLL.PLLN = 336;
+  RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV4;
+  RCC_OscInitStruct.PLL.PLLQ = 7;
+  HAL_RCC_OscConfig(&RCC_OscInitStruct);
+
+  /* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2
+     clocks dividers */
+  RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);
+  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
+  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
+  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
+  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
+  HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2);
+
+}
+
+static inline void board_vbus_set(uint8_t rhport, bool state) {
+  (void) rhport; (void) state;
+}
+
+#ifdef __cplusplus
+ }
+#endif
+
+#endif /* BOARD_H_ */

third_party/tinyusb/hw/bsp/stm32f4/boards/stm32f401blackpill/board.mk

@@ -0,0 +1,13 @@
+CFLAGS += -DSTM32F401xC
+
+# GCC
+SRC_S += $(ST_CMSIS)/Source/Templates/gcc/startup_stm32f401xc.s
+LD_FILE = $(BOARD_PATH)/STM32F401VCTx_FLASH.ld
+
+
+# For flash-jlink target
+JLINK_DEVICE = stm32f401cc
+
+# flash target ROM bootloader
+flash: $(BUILD)/$(PROJECT).bin
+	dfu-util -R -a 0 --dfuse-address 0x08000000 -D $<

third_party/tinyusb/hw/bsp/stm32f4/boards/stm32f407blackvet/STM32F407VETx_FLASH.ld

@@ -0,0 +1,177 @@
+/**
+ ******************************************************************************
+ * @file      LinkerScript.ld
+ * @author    Auto-generated by STM32CubeIDE
+ * @brief     Linker script for STM32F407VETx Device from STM32F4 series
+ *                      512Kbytes FLASH
+ *                      64Kbytes CCMRAM
+ *                      128Kbytes RAM
+ *
+ *            Set heap size, stack size and stack location according
+ *            to application requirements.
+ *
+ *            Set memory bank area and size if external memory is used
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>&copy; Copyright (c) 2020 STMicroelectronics.
+ * All rights reserved.</center></h2>
+ *
+ * This software component is licensed by ST under BSD 3-Clause license,
+ * the "License"; You may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at:
+ *                        opensource.org/licenses/BSD-3-Clause
+ *
+ ******************************************************************************
+ */
+
+/* Entry Point */
+ENTRY(Reset_Handler)
+
+/* Memories definition */
+MEMORY
+{
+  CCMRAM    (xrw)    : ORIGIN = 0x10000000,   LENGTH = 64K
+  RAM    (xrw)    : ORIGIN = 0x20000000,   LENGTH = 128K
+  FLASH    (rx)    : ORIGIN = 0x8000000,   LENGTH = 512K
+}
+
+/* Highest address of the user mode stack */
+_estack = ORIGIN(RAM) + LENGTH(RAM);	/* end of "RAM" Ram type memory */
+
+_Min_Heap_Size = 0x200 ;	/* required amount of heap  */
+_Min_Stack_Size = 0x400 ;	/* required amount of stack */
+
+/* Sections */
+SECTIONS
+{
+  /* The startup code into "FLASH" Rom type memory */
+  .isr_vector :
+  {
+    . = ALIGN(4);
+    KEEP(*(.isr_vector)) /* Startup code */
+    . = ALIGN(4);
+  } >FLASH
+
+  /* The program code and other data into "FLASH" Rom type memory */
+  .text :
+  {
+    . = ALIGN(4);
+    *(.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(4);
+    _etext = .;        /* define a global symbols at end of code */
+  } >FLASH
+
+  /* Constant data into "FLASH" Rom type memory */
+  .rodata :
+  {
+    . = ALIGN(4);
+    *(.rodata)         /* .rodata sections (constants, strings, etc.) */
+    *(.rodata*)        /* .rodata* sections (constants, strings, etc.) */
+    . = ALIGN(4);
+  } >FLASH
+
+  .ARM.extab   : {
+    . = ALIGN(4);
+    *(.ARM.extab* .gnu.linkonce.armextab.*)
+    . = ALIGN(4);
+  } >FLASH
+
+  .ARM : {
+    . = ALIGN(4);
+    __exidx_start = .;
+    *(.ARM.exidx*)
+    __exidx_end = .;
+    . = ALIGN(4);
+  } >FLASH
+
+  .preinit_array     :
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__preinit_array_start = .);
+    KEEP (*(.preinit_array*))
+    PROVIDE_HIDDEN (__preinit_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+
+  .init_array :
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__init_array_start = .);
+    KEEP (*(SORT(.init_array.*)))
+    KEEP (*(.init_array*))
+    PROVIDE_HIDDEN (__init_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+
+  .fini_array :
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__fini_array_start = .);
+    KEEP (*(SORT(.fini_array.*)))
+    KEEP (*(.fini_array*))
+    PROVIDE_HIDDEN (__fini_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+
+  /* Used by the startup to initialize data */
+  _sidata = LOADADDR(.data);
+
+  /* Initialized data sections into "RAM" Ram type memory */
+  .data :
+  {
+    . = ALIGN(4);
+    _sdata = .;        /* create a global symbol at data start */
+    *(.data)           /* .data sections */
+    *(.data*)          /* .data* sections */
+
+    . = ALIGN(4);
+    _edata = .;        /* define a global symbol at data end */
+
+  } >RAM AT> FLASH
+
+  /* Uninitialized data section into "RAM" Ram type memory */
+  . = ALIGN(4);
+  .bss :
+  {
+    /* This is used by the startup in order to initialize the .bss section */
+    _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" Ram  type memory left */
+  ._user_heap_stack :
+  {
+    . = ALIGN(8);
+    PROVIDE ( end = . );
+    PROVIDE ( _end = . );
+    . = . + _Min_Heap_Size;
+    . = . + _Min_Stack_Size;
+    . = ALIGN(8);
+  } >RAM
+
+  /* Remove information from the compiler libraries */
+  /DISCARD/ :
+  {
+    libc.a ( * )
+    libm.a ( * )
+    libgcc.a ( * )
+  }
+
+  .ARM.attributes 0 : { *(.ARM.attributes) }
+}

third_party/tinyusb/hw/bsp/stm32f4/boards/stm32f407blackvet/board.cmake

@@ -0,0 +1,11 @@
+set(MCU_VARIANT stm32f407xx)
+set(JLINK_DEVICE stm32f407ve)
+
+set(LD_FILE_GNU ${CMAKE_CURRENT_LIST_DIR}/STM32F407VETx_FLASH.ld)
+
+function(update_board TARGET)
+  target_compile_definitions(${TARGET} PUBLIC
+    STM32F407xx
+    HSE_VALUE=8000000
+    )
+endfunction()

third_party/tinyusb/hw/bsp/stm32f4/boards/stm32f407blackvet/board.h

@@ -0,0 +1,117 @@
+/*
+ * 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.
+ */
+
+/* metadata:
+   name: STM32 F407 Blackvet
+   url: https://stm32-base.org/boards/STM32F407VET6-STM32-F4VE-V2.0
+*/
+
+#ifndef BOARD_H_
+#define BOARD_H_
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+// Enable PA2 as the debug log UART
+#define UART_ID               2
+
+#define PINID_LED      0
+#define PINID_BUTTON   1
+#define PINID_UART_TX  2
+#define PINID_UART_RX  3
+
+#define VBUS_SENSE_EN  0
+
+static board_pindef_t board_pindef[] = {
+  { // LED
+    .port = GPIOA,
+    .pin_init = { .Pin = GPIO_PIN_6, .Mode = GPIO_MODE_OUTPUT_PP, .Pull = GPIO_PULLDOWN, .Speed = GPIO_SPEED_HIGH, .Alternate = 0 },
+    .active_state = 1
+  },
+  { // BUTTON
+    .port = GPIOE,
+    .pin_init = { .Pin = GPIO_PIN_4, .Mode = GPIO_MODE_INPUT, .Pull = GPIO_PULLUP, .Speed = GPIO_SPEED_HIGH, .Alternate = 0 },
+    .active_state = 0
+  },
+  { // UART TX
+    .port = GPIOA,
+    .pin_init = { .Pin = GPIO_PIN_2, .Mode = GPIO_MODE_AF_PP, .Pull = GPIO_PULLUP, .Speed = GPIO_SPEED_HIGH, .Alternate = GPIO_AF7_USART2 },
+    .active_state = 0
+  },
+  { // UART RX
+    .port = GPIOA,
+    .pin_init = { .Pin = GPIO_PIN_3, .Mode = GPIO_MODE_AF_PP, .Pull = GPIO_PULLUP, .Speed = GPIO_SPEED_HIGH, .Alternate = GPIO_AF7_USART2 },
+    .active_state = 0
+  },
+};
+//--------------------------------------------------------------------+
+// RCC Clock
+//--------------------------------------------------------------------+
+static inline void board_clock_init(void)
+{
+  RCC_ClkInitTypeDef RCC_ClkInitStruct;
+  RCC_OscInitTypeDef RCC_OscInitStruct;
+
+  /* Enable Power Control clock */
+  __HAL_RCC_PWR_CLK_ENABLE();
+
+  /* The voltage scaling allows optimizing the power consumption when the device is
+     clocked below the maximum system frequency, to update the voltage scaling value
+     regarding system frequency refer to product datasheet.  */
+  __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
+
+  /* Enable HSE Oscillator and activate PLL with HSE as source */
+  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
+  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
+  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
+  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
+  RCC_OscInitStruct.PLL.PLLM = HSE_VALUE/2000000;
+  RCC_OscInitStruct.PLL.PLLN = 168;
+  RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
+  RCC_OscInitStruct.PLL.PLLQ = 7;
+  HAL_RCC_OscConfig(&RCC_OscInitStruct);
+
+  /* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2
+     clocks dividers */
+  RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);
+  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
+  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
+  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
+  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;
+  HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5);
+
+}
+
+static inline void board_vbus_set(uint8_t rhport, bool state) {
+  (void) rhport; (void) state;
+}
+
+#ifdef __cplusplus
+ }
+#endif
+
+#endif /* BOARD_H_ */

third_party/tinyusb/hw/bsp/stm32f4/boards/stm32f407blackvet/board.mk

@@ -0,0 +1,13 @@
+CFLAGS += -DSTM32F407xx
+
+# GCC
+SRC_S += $(ST_CMSIS)/Source/Templates/gcc/startup_stm32f407xx.s
+LD_FILE = $(BOARD_PATH)/STM32F407VETx_FLASH.ld
+
+
+
+# For flash-jlink target
+JLINK_DEVICE = stm32f407vg
+
+# flash target using on-board stlink
+flash: flash-stlink

third_party/tinyusb/hw/bsp/stm32f4/boards/stm32f407disco/STM32F407VGTx_FLASH.ld

@@ -0,0 +1,187 @@
+/*
+*****************************************************************************
+**
+
+**  File        : LinkerScript.ld
+**
+**  Abstract    : Linker script for STM32F407VGTx Device with
+**                1024KByte FLASH, 128KByte 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 = 0x20020000;    /* end of RAM */
+/* Generate a link error if heap and stack don't fit into RAM */
+_Min_Heap_Size = 0x1000;      /* required amount of heap  */
+_Min_Stack_Size = 0x4000; /* required amount of stack */
+
+/* Specify the memory areas */
+MEMORY
+{
+  RAM (xrw)    : ORIGIN = 0x20000000, LENGTH = 128K
+  CCMRAM (rw)  : ORIGIN = 0x10000000, LENGTH = 64K
+  FLASH (rx)   : ORIGIN = 0x8000000, LENGTH = 1024K
+}
+
+/* Define output sections */
+SECTIONS
+{
+  /* The startup code goes first into FLASH */
+  .isr_vector :
+  {
+    . = ALIGN(4);
+    KEEP(*(.isr_vector)) /* Startup code */
+    . = ALIGN(4);
+  } >FLASH
+
+  /* The program code and other data goes into FLASH */
+  .text :
+  {
+    . = ALIGN(4);
+    *(.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(4);
+    _etext = .;        /* define a global symbols at end of code */
+  } >FLASH
+
+  /* Constant data goes into FLASH */
+  .rodata :
+  {
+    . = ALIGN(4);
+    *(.rodata)         /* .rodata sections (constants, strings, etc.) */
+    *(.rodata*)        /* .rodata* sections (constants, strings, etc.) */
+    . = ALIGN(4);
+  } >FLASH
+
+  .ARM.extab   : { *(.ARM.extab* .gnu.linkonce.armextab.*) } >FLASH
+  .ARM : {
+    __exidx_start = .;
+    *(.ARM.exidx*)
+    __exidx_end = .;
+  } >FLASH
+
+  .preinit_array     :
+  {
+    PROVIDE_HIDDEN (__preinit_array_start = .);
+    KEEP (*(.preinit_array*))
+    PROVIDE_HIDDEN (__preinit_array_end = .);
+  } >FLASH
+  .init_array :
+  {
+    PROVIDE_HIDDEN (__init_array_start = .);
+    KEEP (*(SORT(.init_array.*)))
+    KEEP (*(.init_array*))
+    PROVIDE_HIDDEN (__init_array_end = .);
+  } >FLASH
+  .fini_array :
+  {
+    PROVIDE_HIDDEN (__fini_array_start = .);
+    KEEP (*(SORT(.fini_array.*)))
+    KEEP (*(.fini_array*))
+    PROVIDE_HIDDEN (__fini_array_end = .);
+  } >FLASH
+
+  /* used by the startup to initialize data */
+  _sidata = LOADADDR(.data);
+
+  /* Initialized data sections goes into RAM, load LMA copy after code */
+  .data :
+  {
+    . = ALIGN(4);
+    _sdata = .;        /* create a global symbol at data start */
+    *(.data)           /* .data sections */
+    *(.data*)          /* .data* sections */
+
+    . = ALIGN(4);
+    _edata = .;        /* define a global symbol at data end */
+  } >RAM AT> FLASH
+
+  _siccmram = LOADADDR(.ccmram);
+
+  /* CCM-RAM section
+  *
+  * IMPORTANT NOTE!
+  * If initialized variables will be placed in this section,
+  * the startup code needs to be modified to copy the init-values.
+  */
+  .ccmram :
+  {
+    . = ALIGN(4);
+    _sccmram = .;       /* create a global symbol at ccmram start */
+    *(.ccmram)
+    *(.ccmram*)
+
+    . = ALIGN(4);
+    _eccmram = .;       /* create a global symbol at ccmram end */
+  } >CCMRAM AT> FLASH
+
+
+  /* Uninitialized data section */
+  . = ALIGN(4);
+  .bss :
+  {
+    /* This is used by the startup in order to initialize the .bss section */
+    _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) }
+}

third_party/tinyusb/hw/bsp/stm32f4/boards/stm32f407disco/board.cmake

@@ -0,0 +1,10 @@
+set(MCU_VARIANT stm32f407xx)
+set(JLINK_DEVICE stm32f407vg)
+
+set(LD_FILE_GNU ${CMAKE_CURRENT_LIST_DIR}/STM32F407VGTx_FLASH.ld)
+
+function(update_board TARGET)
+  target_compile_definitions(${TARGET} PUBLIC
+    STM32F407xx
+    )
+endfunction()

third_party/tinyusb/hw/bsp/stm32f4/boards/stm32f407disco/board.h

@@ -0,0 +1,128 @@
+/*
+ * 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.
+ */
+
+/* metadata:
+   name: STM32 F407 Discovery
+   url: https://www.st.com/en/evaluation-tools/stm32f4discovery.html
+*/
+
+#ifndef BOARD_H_
+#define BOARD_H_
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+// Enable PA2 as the debug log UART
+// It is not routed to the ST/Link on the Discovery board.
+#define UART_ID               2
+
+#define PINID_LED      0
+#define PINID_BUTTON   1
+#define PINID_UART_TX  2
+#define PINID_UART_RX  3
+#define PINID_VBUS0_EN 4
+
+#define VBUS_SENSE_EN  1
+
+static board_pindef_t board_pindef[] = {
+  { // LED
+    .port = GPIOD,
+    .pin_init = { .Pin = GPIO_PIN_14, .Mode = GPIO_MODE_OUTPUT_PP, .Pull = GPIO_PULLDOWN, .Speed = GPIO_SPEED_HIGH, .Alternate = 0 },
+    .active_state = 1
+  },
+  { // BUTTON
+    .port = GPIOA,
+    .pin_init = { .Pin = GPIO_PIN_0, .Mode = GPIO_MODE_INPUT, .Pull = GPIO_PULLDOWN, .Speed = GPIO_SPEED_HIGH, .Alternate = 0 },
+    .active_state = 1
+  },
+  { // UART TX
+    .port = GPIOA,
+    .pin_init = { .Pin = GPIO_PIN_2, .Mode = GPIO_MODE_AF_PP, .Pull = GPIO_PULLUP, .Speed = GPIO_SPEED_HIGH, .Alternate = GPIO_AF7_USART2 },
+    .active_state = 0
+  },
+  { // UART RX
+    .port = GPIOA,
+    .pin_init = { .Pin = GPIO_PIN_3, .Mode = GPIO_MODE_AF_PP, .Pull = GPIO_PULLUP, .Speed = GPIO_SPEED_HIGH, .Alternate = GPIO_AF7_USART2 },
+    .active_state = 0
+  },
+  { // VBUS0 EN
+    .port = GPIOC,
+    .pin_init = { .Pin = GPIO_PIN_0, .Mode = GPIO_MODE_OUTPUT_PP, .Pull = GPIO_NOPULL, .Speed = GPIO_SPEED_HIGH, .Alternate = 0 },
+    .active_state = 0
+  }
+};
+
+//--------------------------------------------------------------------+
+// RCC Clock
+//--------------------------------------------------------------------+
+static inline void board_clock_init(void)
+{
+  RCC_ClkInitTypeDef RCC_ClkInitStruct;
+  RCC_OscInitTypeDef RCC_OscInitStruct;
+
+  /* Enable Power Control clock */
+  __HAL_RCC_PWR_CLK_ENABLE();
+
+  /* The voltage scaling allows optimizing the power consumption when the device is
+     clocked below the maximum system frequency, to update the voltage scaling value
+     regarding system frequency refer to product datasheet.  */
+  __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
+
+  /* Enable HSE Oscillator and activate PLL with HSE as source */
+  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
+  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
+  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
+  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
+  RCC_OscInitStruct.PLL.PLLM = HSE_VALUE/1000000;
+  RCC_OscInitStruct.PLL.PLLN = 336;
+  RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
+  RCC_OscInitStruct.PLL.PLLQ = 7;
+  HAL_RCC_OscConfig(&RCC_OscInitStruct);
+
+  /* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2
+     clocks dividers */
+  RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);
+  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
+  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
+  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
+  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;
+  HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5);
+
+}
+
+static inline void board_vbus_set(uint8_t rhport, bool state) {
+  if (rhport == 0) {
+    board_pindef_t* pindef = &board_pindef[PINID_VBUS0_EN];
+    HAL_GPIO_WritePin(pindef->port, pindef->pin_init.Pin, state == pindef->active_state ? GPIO_PIN_SET : GPIO_PIN_RESET);
+  }
+}
+
+#ifdef __cplusplus
+ }
+#endif
+
+#endif /* BOARD_H_ */

third_party/tinyusb/hw/bsp/stm32f4/boards/stm32f407disco/board.mk

@@ -0,0 +1,13 @@
+CFLAGS += -DSTM32F407xx
+
+# GCC
+SRC_S += $(ST_CMSIS)/Source/Templates/gcc/startup_stm32f407xx.s
+LD_FILE = $(BOARD_PATH)/STM32F407VGTx_FLASH.ld
+
+
+
+# For flash-jlink target
+JLINK_DEVICE = stm32f407vg
+
+# flash target using on-board stlink
+flash: flash-stlink

third_party/tinyusb/hw/bsp/stm32f4/boards/stm32f411blackpill/STM32F411CEUx_FLASH.ld

@@ -0,0 +1,167 @@
+/*
+*****************************************************************************
+**
+
+**  File        : LinkerScript.ld
+**
+**  Abstract    : Linker script for STM32F411CEUx Device with
+**                512KByte FLASH, 128KByte 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 = 0x20020000;    /* 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 = 512K
+RAM (xrw)      : ORIGIN = 0x20000000, LENGTH = 128K
+}
+
+/* Define output sections */
+SECTIONS
+{
+  /* The startup code goes first into FLASH */
+  .isr_vector :
+  {
+    . = ALIGN(4);
+    KEEP(*(.isr_vector)) /* Startup code */
+    . = ALIGN(4);
+  } >FLASH
+
+  /* The program code and other data goes into FLASH */
+  .text :
+  {
+    . = ALIGN(4);
+    *(.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(4);
+    _etext = .;        /* define a global symbols at end of code */
+  } >FLASH
+
+  /* Constant data goes into FLASH */
+  .rodata :
+  {
+    . = ALIGN(4);
+    *(.rodata)         /* .rodata sections (constants, strings, etc.) */
+    *(.rodata*)        /* .rodata* sections (constants, strings, etc.) */
+    . = ALIGN(4);
+  } >FLASH
+
+  .ARM.extab   : { *(.ARM.extab* .gnu.linkonce.armextab.*) } >FLASH
+  .ARM : {
+    __exidx_start = .;
+    *(.ARM.exidx*)
+    __exidx_end = .;
+  } >FLASH
+
+  .preinit_array     :
+  {
+    PROVIDE_HIDDEN (__preinit_array_start = .);
+    KEEP (*(.preinit_array*))
+    PROVIDE_HIDDEN (__preinit_array_end = .);
+  } >FLASH
+  .init_array :
+  {
+    PROVIDE_HIDDEN (__init_array_start = .);
+    KEEP (*(SORT(.init_array.*)))
+    KEEP (*(.init_array*))
+    PROVIDE_HIDDEN (__init_array_end = .);
+  } >FLASH
+  .fini_array :
+  {
+    PROVIDE_HIDDEN (__fini_array_start = .);
+    KEEP (*(SORT(.fini_array.*)))
+    KEEP (*(.fini_array*))
+    PROVIDE_HIDDEN (__fini_array_end = .);
+  } >FLASH
+
+  /* used by the startup to initialize data */
+  _sidata = LOADADDR(.data);
+
+  /* Initialized data sections goes into RAM, load LMA copy after code */
+  .data :
+  {
+    . = ALIGN(4);
+    _sdata = .;        /* create a global symbol at data start */
+    *(.data)           /* .data sections */
+    *(.data*)          /* .data* sections */
+
+    . = ALIGN(4);
+    _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 section */
+    _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(4);
+    PROVIDE ( end = . );
+    PROVIDE ( _end = . );
+    . = . + _Min_Heap_Size;
+    . = . + _Min_Stack_Size;
+    . = ALIGN(4);
+  } >RAM
+
+
+
+  /* Remove information from the standard libraries */
+  /DISCARD/ :
+  {
+    libc.a ( * )
+    libm.a ( * )
+    libgcc.a ( * )
+  }
+
+  .ARM.attributes 0 : { *(.ARM.attributes) }
+}

third_party/tinyusb/hw/bsp/stm32f4/boards/stm32f411blackpill/board.cmake

@@ -0,0 +1,11 @@
+set(MCU_VARIANT stm32f411xe)
+set(JLINK_DEVICE stm32f411ce)
+
+set(LD_FILE_GNU ${CMAKE_CURRENT_LIST_DIR}/STM32F411CEUx_FLASH.ld)
+
+function(update_board TARGET)
+  target_compile_definitions(${TARGET} PUBLIC
+    STM32F411xE
+    HSE_VALUE=25000000
+    )
+endfunction()

third_party/tinyusb/hw/bsp/stm32f4/boards/stm32f411blackpill/board.h

@@ -0,0 +1,117 @@
+/*
+ * 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.
+ */
+
+/* metadata:
+   name: STM32 F411 Blackpill
+   url: https://stm32-base.org/boards/STM32F411CEU6-WeAct-Black-Pill-V2.0
+*/
+
+#ifndef BOARD_H_
+#define BOARD_H_
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+#define UART_ID               2
+
+#define PINID_LED      0
+#define PINID_BUTTON   1
+#define PINID_UART_TX  2
+#define PINID_UART_RX  3
+
+#define VBUS_SENSE_EN  0
+
+static board_pindef_t board_pindef[] = {
+  { // LED
+    .port = GPIOC,
+    .pin_init = { .Pin = GPIO_PIN_13, .Mode = GPIO_MODE_OUTPUT_PP, .Pull = GPIO_PULLUP, .Speed = GPIO_SPEED_HIGH, .Alternate = 0 },
+    .active_state = 0
+  },
+  { // BUTTON
+    .port = GPIOA,
+    .pin_init = { .Pin = GPIO_PIN_0, .Mode = GPIO_MODE_INPUT, .Pull = GPIO_PULLUP, .Speed = GPIO_SPEED_HIGH, .Alternate = 0 },
+    .active_state = 0
+  },
+  { // UART TX
+    .port = GPIOA,
+    .pin_init = { .Pin = GPIO_PIN_2, .Mode = GPIO_MODE_AF_PP, .Pull = GPIO_PULLUP, .Speed = GPIO_SPEED_HIGH, .Alternate = GPIO_AF7_USART2 },
+    .active_state = 0
+  },
+  { // UART RX
+    .port = GPIOA,
+    .pin_init = { .Pin = GPIO_PIN_3, .Mode = GPIO_MODE_AF_PP, .Pull = GPIO_PULLUP, .Speed = GPIO_SPEED_HIGH, .Alternate = GPIO_AF7_USART2 },
+    .active_state = 0
+  },
+};
+
+//--------------------------------------------------------------------+
+// RCC Clock
+//--------------------------------------------------------------------+
+static inline void board_clock_init(void)
+{
+  RCC_ClkInitTypeDef RCC_ClkInitStruct;
+  RCC_OscInitTypeDef RCC_OscInitStruct;
+
+  /* Enable Power Control clock */
+  __HAL_RCC_PWR_CLK_ENABLE();
+
+  /* The voltage scaling allows optimizing the power consumption when the device is
+     clocked below the maximum system frequency, to update the voltage scaling value
+     regarding system frequency refer to product datasheet.  */
+  __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE2);
+
+  /* Enable HSE Oscillator and activate PLL with HSE as source */
+  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
+  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
+  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
+  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
+  RCC_OscInitStruct.PLL.PLLM = HSE_VALUE/1000000;
+  RCC_OscInitStruct.PLL.PLLN = 336;
+  RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV4;
+  RCC_OscInitStruct.PLL.PLLQ = 7;
+  HAL_RCC_OscConfig(&RCC_OscInitStruct);
+
+  /* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2
+     clocks dividers */
+  RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);
+  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
+  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
+  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
+  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
+  HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2);
+
+}
+
+static inline void board_vbus_set(uint8_t rhport, bool state) {
+  (void) rhport; (void) state;
+}
+
+#ifdef __cplusplus
+ }
+#endif
+
+#endif /* BOARD_H_ */

third_party/tinyusb/hw/bsp/stm32f4/boards/stm32f411blackpill/board.mk

@@ -0,0 +1,13 @@
+CFLAGS += -DSTM32F411xE -DHSE_VALUE=25000000
+
+# GCC
+SRC_S += $(ST_CMSIS)/Source/Templates/gcc/startup_stm32f411xe.s
+LD_FILE = $(BOARD_PATH)/STM32F411CEUx_FLASH.ld
+
+
+# For flash-jlink target
+JLINK_DEVICE = stm32f411ce
+
+# flash target ROM bootloader
+flash: $(BUILD)/$(PROJECT).bin
+	dfu-util -R -a 0 --dfuse-address 0x08000000 -D $<

third_party/tinyusb/hw/bsp/stm32f4/boards/stm32f411disco/STM32F411VETx_FLASH.ld

@@ -0,0 +1,167 @@
+/*
+*****************************************************************************
+**
+
+**  File        : LinkerScript.ld
+**
+**  Abstract    : Linker script for STM32F411VETx Device with
+**                512KByte FLASH, 128KByte 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 = 0x20020000;    /* 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 = 512K
+RAM (xrw)      : ORIGIN = 0x20000000, LENGTH = 128K
+}
+
+/* Define output sections */
+SECTIONS
+{
+  /* The startup code goes first into FLASH */
+  .isr_vector :
+  {
+    . = ALIGN(4);
+    KEEP(*(.isr_vector)) /* Startup code */
+    . = ALIGN(4);
+  } >FLASH
+
+  /* The program code and other data goes into FLASH */
+  .text :
+  {
+    . = ALIGN(4);
+    *(.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(4);
+    _etext = .;        /* define a global symbols at end of code */
+  } >FLASH
+
+  /* Constant data goes into FLASH */
+  .rodata :
+  {
+    . = ALIGN(4);
+    *(.rodata)         /* .rodata sections (constants, strings, etc.) */
+    *(.rodata*)        /* .rodata* sections (constants, strings, etc.) */
+    . = ALIGN(4);
+  } >FLASH
+
+  .ARM.extab   : { *(.ARM.extab* .gnu.linkonce.armextab.*) } >FLASH
+  .ARM : {
+    __exidx_start = .;
+    *(.ARM.exidx*)
+    __exidx_end = .;
+  } >FLASH
+
+  .preinit_array     :
+  {
+    PROVIDE_HIDDEN (__preinit_array_start = .);
+    KEEP (*(.preinit_array*))
+    PROVIDE_HIDDEN (__preinit_array_end = .);
+  } >FLASH
+  .init_array :
+  {
+    PROVIDE_HIDDEN (__init_array_start = .);
+    KEEP (*(SORT(.init_array.*)))
+    KEEP (*(.init_array*))
+    PROVIDE_HIDDEN (__init_array_end = .);
+  } >FLASH
+  .fini_array :
+  {
+    PROVIDE_HIDDEN (__fini_array_start = .);
+    KEEP (*(SORT(.fini_array.*)))
+    KEEP (*(.fini_array*))
+    PROVIDE_HIDDEN (__fini_array_end = .);
+  } >FLASH
+
+  /* used by the startup to initialize data */
+  _sidata = LOADADDR(.data);
+
+  /* Initialized data sections goes into RAM, load LMA copy after code */
+  .data :
+  {
+    . = ALIGN(4);
+    _sdata = .;        /* create a global symbol at data start */
+    *(.data)           /* .data sections */
+    *(.data*)          /* .data* sections */
+
+    . = ALIGN(4);
+    _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 section */
+    _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) }
+}

third_party/tinyusb/hw/bsp/stm32f4/boards/stm32f411disco/board.cmake

@@ -0,0 +1,10 @@
+set(MCU_VARIANT stm32f411xe)
+set(JLINK_DEVICE stm32f411ve)
+
+set(LD_FILE_GNU ${CMAKE_CURRENT_LIST_DIR}/STM32F411VETx_FLASH.ld)
+
+function(update_board TARGET)
+  target_compile_definitions(${TARGET} PUBLIC
+    STM32F411xE
+    )
+endfunction()

third_party/tinyusb/hw/bsp/stm32f4/boards/stm32f411disco/board.h

@@ -0,0 +1,125 @@
+/*
+ * 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.
+ */
+
+/* metadata:
+   name: STM32 F411 Discovery
+   url: https://www.st.com/en/evaluation-tools/32f411ediscovery.html
+*/
+
+#ifndef BOARD_H_
+#define BOARD_H_
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+#define UART_ID               2
+
+#define PINID_LED      0
+#define PINID_BUTTON   1
+#define PINID_UART_TX  2
+#define PINID_UART_RX  3
+#define PINID_VBUS0_EN 4
+
+#define VBUS_SENSE_EN  1
+
+static board_pindef_t board_pindef[] = {
+  { // LED
+    .port = GPIOD,
+    .pin_init = { .Pin = GPIO_PIN_13, .Mode = GPIO_MODE_OUTPUT_PP, .Pull = GPIO_PULLDOWN, .Speed = GPIO_SPEED_HIGH, .Alternate = 0 },
+    .active_state = 1
+  },
+  { // BUTTON
+    .port = GPIOA,
+    .pin_init = { .Pin = GPIO_PIN_0, .Mode = GPIO_MODE_INPUT, .Pull = GPIO_PULLDOWN, .Speed = GPIO_SPEED_HIGH, .Alternate = 0 },
+    .active_state = 1
+  },
+  { // UART TX
+    .port = GPIOA,
+    .pin_init = { .Pin = GPIO_PIN_2, .Mode = GPIO_MODE_AF_PP, .Pull = GPIO_PULLUP, .Speed = GPIO_SPEED_HIGH, .Alternate = GPIO_AF7_USART2 },
+    .active_state = 0
+  },
+  { // UART RX
+    .port = GPIOA,
+    .pin_init = { .Pin = GPIO_PIN_3, .Mode = GPIO_MODE_AF_PP, .Pull = GPIO_PULLUP, .Speed = GPIO_SPEED_HIGH, .Alternate = GPIO_AF7_USART2 },
+    .active_state = 0
+  },
+  { // VBUS0 EN
+    .port = GPIOC,
+    .pin_init = { .Pin = GPIO_PIN_0, .Mode = GPIO_MODE_OUTPUT_PP, .Pull = GPIO_NOPULL, .Speed = GPIO_SPEED_HIGH, .Alternate = 0 },
+    .active_state = 0
+  }
+};
+
+//--------------------------------------------------------------------+
+// RCC Clock
+//--------------------------------------------------------------------+
+static inline void board_clock_init(void) {
+  RCC_ClkInitTypeDef RCC_ClkInitStruct;
+  RCC_OscInitTypeDef RCC_OscInitStruct;
+
+  /* Enable Power Control clock */
+  __HAL_RCC_PWR_CLK_ENABLE();
+
+  /* The voltage scaling allows optimizing the power consumption when the device is
+     clocked below the maximum system frequency, to update the voltage scaling value
+     regarding system frequency refer to product datasheet.  */
+  __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE2);
+
+  /* Enable HSE Oscillator and activate PLL with HSE as source */
+  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
+  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
+  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
+  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
+  RCC_OscInitStruct.PLL.PLLM = HSE_VALUE/1000000;
+  RCC_OscInitStruct.PLL.PLLN = 336;
+  RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV4;
+  RCC_OscInitStruct.PLL.PLLQ = 7;
+  HAL_RCC_OscConfig(&RCC_OscInitStruct);
+
+  /* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2
+     clocks dividers */
+  RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);
+  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
+  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
+  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
+  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
+  HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2);
+
+}
+
+static inline void board_vbus_set(uint8_t rhport, bool state) {
+  if (rhport == 0) {
+    board_pindef_t* pindef = &board_pindef[PINID_VBUS0_EN];
+    HAL_GPIO_WritePin(pindef->port, pindef->pin_init.Pin, state == pindef->active_state ? GPIO_PIN_SET : GPIO_PIN_RESET);
+  }
+}
+
+#ifdef __cplusplus
+ }
+#endif
+
+#endif /* BOARD_H_ */

third_party/tinyusb/hw/bsp/stm32f4/boards/stm32f411disco/board.mk

@@ -0,0 +1,12 @@
+CFLAGS += -DSTM32F411xE
+
+# GCC
+SRC_S += $(ST_CMSIS)/Source/Templates/gcc/startup_stm32f411xe.s
+LD_FILE = $(BOARD_PATH)/STM32F411VETx_FLASH.ld
+
+
+# For flash-jlink target
+JLINK_DEVICE = stm32f411ve
+
+# flash target using on-board stlink
+flash: flash-stlink

third_party/tinyusb/hw/bsp/stm32f4/boards/stm32f412disco/STM32F412ZGTx_FLASH.ld

@@ -0,0 +1,167 @@
+/*
+*****************************************************************************
+**
+
+**  File        : LinkerScript.ld
+**
+**  Abstract    : Linker script for STM32F412ZGTx Device with
+**                1024KByte FLASH, 256KByte 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 = 0x20040000;    /* 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 = 1024K
+RAM (xrw)      : ORIGIN = 0x20000000, LENGTH = 256K
+}
+
+/* Define output sections */
+SECTIONS
+{
+  /* The startup code goes first into FLASH */
+  .isr_vector :
+  {
+    . = ALIGN(4);
+    KEEP(*(.isr_vector)) /* Startup code */
+    . = ALIGN(4);
+  } >FLASH
+
+  /* The program code and other data goes into FLASH */
+  .text :
+  {
+    . = ALIGN(4);
+    *(.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(4);
+    _etext = .;        /* define a global symbols at end of code */
+  } >FLASH
+
+  /* Constant data goes into FLASH */
+  .rodata :
+  {
+    . = ALIGN(4);
+    *(.rodata)         /* .rodata sections (constants, strings, etc.) */
+    *(.rodata*)        /* .rodata* sections (constants, strings, etc.) */
+    . = ALIGN(4);
+  } >FLASH
+
+  .ARM.extab   : { *(.ARM.extab* .gnu.linkonce.armextab.*) } >FLASH
+  .ARM : {
+    __exidx_start = .;
+    *(.ARM.exidx*)
+    __exidx_end = .;
+  } >FLASH
+
+  .preinit_array     :
+  {
+    PROVIDE_HIDDEN (__preinit_array_start = .);
+    KEEP (*(.preinit_array*))
+    PROVIDE_HIDDEN (__preinit_array_end = .);
+  } >FLASH
+  .init_array :
+  {
+    PROVIDE_HIDDEN (__init_array_start = .);
+    KEEP (*(SORT(.init_array.*)))
+    KEEP (*(.init_array*))
+    PROVIDE_HIDDEN (__init_array_end = .);
+  } >FLASH
+  .fini_array :
+  {
+    PROVIDE_HIDDEN (__fini_array_start = .);
+    KEEP (*(SORT(.fini_array.*)))
+    KEEP (*(.fini_array*))
+    PROVIDE_HIDDEN (__fini_array_end = .);
+  } >FLASH
+
+  /* used by the startup to initialize data */
+  _sidata = LOADADDR(.data);
+
+  /* Initialized data sections goes into RAM, load LMA copy after code */
+  .data :
+  {
+    . = ALIGN(4);
+    _sdata = .;        /* create a global symbol at data start */
+    *(.data)           /* .data sections */
+    *(.data*)          /* .data* sections */
+
+    . = ALIGN(4);
+    _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 section */
+    _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) }
+}

third_party/tinyusb/hw/bsp/stm32f4/boards/stm32f412disco/board.cmake

@@ -0,0 +1,11 @@
+set(MCU_VARIANT stm32f412zx)
+set(JLINK_DEVICE stm32f412zg)
+# set(JLINK_OPTION "-USB 000771775987")
+
+set(LD_FILE_GNU ${CMAKE_CURRENT_LIST_DIR}/STM32F412ZGTx_FLASH.ld)
+
+function(update_board TARGET)
+  target_compile_definitions(${TARGET} PUBLIC
+    STM32F412Zx
+    )
+endfunction()

third_party/tinyusb/hw/bsp/stm32f4/boards/stm32f412disco/board.h

@@ -0,0 +1,142 @@
+/*
+ * 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.
+ */
+
+/* metadata:
+   name: STM32 F412 Discovery
+   url: https://www.st.com/en/evaluation-tools/32f412gdiscovery.html
+*/
+
+#ifndef BOARD_H_
+#define BOARD_H_
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+// UART Enable PA2 as the debug log UART
+#define UART_ID               2
+
+#define PINID_LED      0
+#define PINID_BUTTON   1
+#define PINID_UART_TX  2
+#define PINID_UART_RX  3
+#define PINID_VBUS0_EN 4
+
+#define VBUS_SENSE_EN  1
+
+static board_pindef_t board_pindef[] = {
+  { // LED
+    .port = GPIOE,
+    .pin_init = { .Pin = GPIO_PIN_2, .Mode = GPIO_MODE_OUTPUT_PP, .Pull = GPIO_PULLUP, .Speed = GPIO_SPEED_HIGH, .Alternate = 0 },
+    .active_state = 0
+  },
+  { // BUTTON
+    .port = GPIOA,
+    .pin_init = { .Pin = GPIO_PIN_0, .Mode = GPIO_MODE_INPUT, .Pull = GPIO_PULLDOWN, .Speed = GPIO_SPEED_HIGH, .Alternate = 0 },
+    .active_state = 1
+  },
+  { // UART TX
+    .port = GPIOA,
+    .pin_init = { .Pin = GPIO_PIN_2, .Mode = GPIO_MODE_AF_PP, .Pull = GPIO_PULLUP, .Speed = GPIO_SPEED_HIGH, .Alternate = GPIO_AF7_USART2 },
+    .active_state = 0
+  },
+  { // UART RX
+    .port = GPIOA,
+    .pin_init = { .Pin = GPIO_PIN_3, .Mode = GPIO_MODE_AF_PP, .Pull = GPIO_PULLUP, .Speed = GPIO_SPEED_HIGH, .Alternate = GPIO_AF7_USART2 },
+    .active_state = 0
+  },
+  { // VBUS0 EN
+    .port = GPIOG,
+    .pin_init = { .Pin = GPIO_PIN_8, .Mode = GPIO_MODE_OUTPUT_PP, .Pull = GPIO_NOPULL, .Speed = GPIO_SPEED_HIGH, .Alternate = 0 },
+    .active_state = 0
+  }
+};
+
+//--------------------------------------------------------------------+
+// RCC Clock
+//--------------------------------------------------------------------+
+static inline void board_clock_init(void) {
+  RCC_ClkInitTypeDef RCC_ClkInitStruct;
+  RCC_OscInitTypeDef RCC_OscInitStruct;
+  RCC_PeriphCLKInitTypeDef PeriphClkInitStruct;
+
+  /* Enable Power Control clock */
+  __HAL_RCC_PWR_CLK_ENABLE();
+
+  /* The voltage scaling allows optimizing the power consumption when the
+   * device is clocked below the maximum system frequency, to update the
+   * voltage scaling value regarding system frequency refer to product
+   * datasheet.  */
+  __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
+
+  /* Enable HSE Oscillator and activate PLL with HSE as source */
+  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
+  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
+  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
+  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
+  RCC_OscInitStruct.PLL.PLLM = HSE_VALUE/1000000;
+  RCC_OscInitStruct.PLL.PLLN = 200;
+  RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
+  RCC_OscInitStruct.PLL.PLLQ = 7;
+  RCC_OscInitStruct.PLL.PLLR = 2;
+  HAL_RCC_OscConfig(&RCC_OscInitStruct);
+
+  /* Select PLLSAI output as USB clock source */
+  PeriphClkInitStruct.PLLI2S.PLLI2SM = 8;
+  PeriphClkInitStruct.PLLI2S.PLLI2SQ = 4;
+  PeriphClkInitStruct.PLLI2S.PLLI2SN = 192;
+  PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_CK48;
+  PeriphClkInitStruct.Clk48ClockSelection = RCC_CK48CLKSOURCE_PLLI2SQ;
+  PeriphClkInitStruct.PLLI2SSelection = RCC_PLLI2SCLKSOURCE_PLLSRC;
+  PeriphClkInitStruct.PLLI2S.PLLI2SR = 7;
+  HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct);
+
+  /* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2
+   * clocks dividers */
+  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK |
+                                RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2;
+
+  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
+  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
+  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
+  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
+  HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_3);
+
+}
+
+static inline void board_vbus_set(uint8_t rhport, bool state) {
+  if (rhport == 0) {
+    board_pindef_t* pindef = &board_pindef[PINID_VBUS0_EN];
+    HAL_GPIO_WritePin(pindef->port, pindef->pin_init.Pin, state == pindef->active_state ? GPIO_PIN_SET : GPIO_PIN_RESET);
+  }
+}
+
+
+#ifdef __cplusplus
+ }
+#endif
+
+#endif /* BOARD_H_ */

third_party/tinyusb/hw/bsp/stm32f4/boards/stm32f412disco/board.mk

@@ -0,0 +1,12 @@
+CFLAGS += -DSTM32F412Zx
+
+# GCC
+SRC_S += $(ST_CMSIS)/Source/Templates/gcc/startup_stm32f412zx.s
+LD_FILE = $(BOARD_PATH)/STM32F412ZGTx_FLASH.ld
+
+
+# For flash-jlink target
+JLINK_DEVICE = stm32f412zg
+
+# flash target using on-board stlink
+flash: flash-stlink

third_party/tinyusb/hw/bsp/stm32f4/boards/stm32f412nucleo/STM32F412ZGTx_FLASH.ld

@@ -0,0 +1,167 @@
+/*
+*****************************************************************************
+**
+
+**  File        : LinkerScript.ld
+**
+**  Abstract    : Linker script for STM32F412ZGTx Device with
+**                1024KByte FLASH, 256KByte 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 = 0x20040000;    /* 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 = 1024K
+RAM (xrw)      : ORIGIN = 0x20000000, LENGTH = 256K
+}
+
+/* Define output sections */
+SECTIONS
+{
+  /* The startup code goes first into FLASH */
+  .isr_vector :
+  {
+    . = ALIGN(4);
+    KEEP(*(.isr_vector)) /* Startup code */
+    . = ALIGN(4);
+  } >FLASH
+
+  /* The program code and other data goes into FLASH */
+  .text :
+  {
+    . = ALIGN(4);
+    *(.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(4);
+    _etext = .;        /* define a global symbols at end of code */
+  } >FLASH
+
+  /* Constant data goes into FLASH */
+  .rodata :
+  {
+    . = ALIGN(4);
+    *(.rodata)         /* .rodata sections (constants, strings, etc.) */
+    *(.rodata*)        /* .rodata* sections (constants, strings, etc.) */
+    . = ALIGN(4);
+  } >FLASH
+
+  .ARM.extab   : { *(.ARM.extab* .gnu.linkonce.armextab.*) } >FLASH
+  .ARM : {
+    __exidx_start = .;
+    *(.ARM.exidx*)
+    __exidx_end = .;
+  } >FLASH
+
+  .preinit_array     :
+  {
+    PROVIDE_HIDDEN (__preinit_array_start = .);
+    KEEP (*(.preinit_array*))
+    PROVIDE_HIDDEN (__preinit_array_end = .);
+  } >FLASH
+  .init_array :
+  {
+    PROVIDE_HIDDEN (__init_array_start = .);
+    KEEP (*(SORT(.init_array.*)))
+    KEEP (*(.init_array*))
+    PROVIDE_HIDDEN (__init_array_end = .);
+  } >FLASH
+  .fini_array :
+  {
+    PROVIDE_HIDDEN (__fini_array_start = .);
+    KEEP (*(SORT(.fini_array.*)))
+    KEEP (*(.fini_array*))
+    PROVIDE_HIDDEN (__fini_array_end = .);
+  } >FLASH
+
+  /* used by the startup to initialize data */
+  _sidata = LOADADDR(.data);
+
+  /* Initialized data sections goes into RAM, load LMA copy after code */
+  .data :
+  {
+    . = ALIGN(4);
+    _sdata = .;        /* create a global symbol at data start */
+    *(.data)           /* .data sections */
+    *(.data*)          /* .data* sections */
+
+    . = ALIGN(4);
+    _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 section */
+    _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) }
+}

third_party/tinyusb/hw/bsp/stm32f4/boards/stm32f412nucleo/board.cmake

@@ -0,0 +1,11 @@
+set(MCU_VARIANT stm32f412zx)
+set(JLINK_DEVICE stm32f412zg)
+
+set(LD_FILE_GNU ${CMAKE_CURRENT_LIST_DIR}/STM32F412ZGTx_FLASH.ld)
+
+function(update_board TARGET)
+  target_compile_definitions(${TARGET} PUBLIC
+    STM32F412Zx
+    BOARD_TUD_RHPORT=0
+    )
+endfunction()

third_party/tinyusb/hw/bsp/stm32f4/boards/stm32f412nucleo/board.h

@@ -0,0 +1,142 @@
+/*
+ * 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.
+ */
+
+/* metadata:
+   name: STM32 F412 Nucleo
+   url: https://www.st.com/en/evaluation-tools/nucleo-f412zg.html
+*/
+
+#ifndef BOARD_H_
+#define BOARD_H_
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+// UART Enable for STLink VCOM
+#define UART_ID               3
+
+#define PINID_LED      0
+#define PINID_BUTTON   1
+#define PINID_UART_TX  2
+#define PINID_UART_RX  3
+#define PINID_VBUS0_EN 4
+
+#define VBUS_SENSE_EN  1
+
+static board_pindef_t board_pindef[] = {
+  { // LED
+    .port = GPIOB,
+    .pin_init = { .Pin = GPIO_PIN_14, .Mode = GPIO_MODE_OUTPUT_PP, .Pull = GPIO_PULLUP, .Speed = GPIO_SPEED_HIGH, .Alternate = 0 },
+    .active_state = 0
+  },
+  { // BUTTON
+    .port = GPIOC,
+    .pin_init = { .Pin = GPIO_PIN_13, .Mode = GPIO_MODE_INPUT, .Pull = GPIO_PULLDOWN, .Speed = GPIO_SPEED_HIGH, .Alternate = 0 },
+    .active_state = 1
+  },
+  { // UART TX
+    .port = GPIOD,
+    .pin_init = { .Pin = GPIO_PIN_8, .Mode = GPIO_MODE_AF_PP, .Pull = GPIO_PULLUP, .Speed = GPIO_SPEED_HIGH, .Alternate = GPIO_AF7_USART3 },
+    .active_state = 0
+  },
+  { // UART RX
+    .port = GPIOD,
+    .pin_init = { .Pin = GPIO_PIN_9, .Mode = GPIO_MODE_AF_PP, .Pull = GPIO_PULLUP, .Speed = GPIO_SPEED_HIGH, .Alternate = GPIO_AF7_USART3 },
+    .active_state = 0
+  },
+  { // VBUS0 EN
+    .port = GPIOG,
+    .pin_init = { .Pin = GPIO_PIN_6, .Mode = GPIO_MODE_OUTPUT_PP, .Pull = GPIO_PULLDOWN, .Speed = GPIO_SPEED_HIGH, .Alternate = 0 },
+    .active_state = 1
+  }
+};
+
+//--------------------------------------------------------------------+
+// RCC Clock
+//--------------------------------------------------------------------+
+static inline void board_clock_init(void)
+{
+  RCC_ClkInitTypeDef RCC_ClkInitStruct;
+  RCC_OscInitTypeDef RCC_OscInitStruct;
+  RCC_PeriphCLKInitTypeDef PeriphClkInitStruct;
+
+  /* Enable Power Control clock */
+  __HAL_RCC_PWR_CLK_ENABLE();
+
+  /* The voltage scaling allows optimizing the power consumption when the
+   * device is clocked below the maximum system frequency, to update the
+   * voltage scaling value regarding system frequency refer to product
+   * datasheet.  */
+  __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
+
+  /* Enable HSE Oscillator and activate PLL with HSE as source */
+  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
+  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
+  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
+  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
+  RCC_OscInitStruct.PLL.PLLM = HSE_VALUE/1000000;
+  RCC_OscInitStruct.PLL.PLLN = 200;
+  RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
+  RCC_OscInitStruct.PLL.PLLQ = 7;
+  RCC_OscInitStruct.PLL.PLLR = 2;
+  HAL_RCC_OscConfig(&RCC_OscInitStruct);
+
+  /* Select PLLSAI output as USB clock source */
+  PeriphClkInitStruct.PLLI2S.PLLI2SM = 8;
+  PeriphClkInitStruct.PLLI2S.PLLI2SQ = 4;
+  PeriphClkInitStruct.PLLI2S.PLLI2SN = 192;
+  PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_CK48;
+  PeriphClkInitStruct.Clk48ClockSelection = RCC_CK48CLKSOURCE_PLLI2SQ;
+  PeriphClkInitStruct.PLLI2SSelection = RCC_PLLI2SCLKSOURCE_PLLSRC;
+  PeriphClkInitStruct.PLLI2S.PLLI2SR = 7;
+  HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct);
+
+  /* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2
+   * clocks dividers */
+  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK |
+                                RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2;
+
+  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
+  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
+  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
+  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
+  HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_3);
+
+}
+
+static inline void board_vbus_set(uint8_t rhport, bool state) {
+  if (rhport == 0) {
+    board_pindef_t* pindef = &board_pindef[PINID_VBUS0_EN];
+    HAL_GPIO_WritePin(pindef->port, pindef->pin_init.Pin, state == pindef->active_state ? GPIO_PIN_SET : GPIO_PIN_RESET);
+  }
+}
+
+#ifdef __cplusplus
+ }
+#endif
+
+#endif /* BOARD_H_ */

third_party/tinyusb/hw/bsp/stm32f4/boards/stm32f412nucleo/board.mk

@@ -0,0 +1,12 @@
+CFLAGS += -DSTM32F412Zx
+
+# GCC
+SRC_S += $(ST_CMSIS)/Source/Templates/gcc/startup_stm32f412zx.s
+LD_FILE = $(BOARD_PATH)/STM32F412ZGTx_FLASH.ld
+
+
+# For flash-jlink target
+JLINK_DEVICE = stm32f412zg
+
+# flash target using on-board stlink
+flash: flash-stlink

third_party/tinyusb/hw/bsp/stm32f4/boards/stm32f439nucleo/STM32F439ZITX_FLASH.ld

@@ -0,0 +1,206 @@
+/*
+******************************************************************************
+**
+** @file        : LinkerScript.ld
+**
+** @author      : Auto-generated by STM32CubeIDE
+**
+**  Abstract    : Linker script for NUCLEO-F439ZI Board embedding STM32F439ZITx Device from stm32f4 series
+**                      2048Kbytes FLASH
+**                      64Kbytes CCMRAM
+**                      192Kbytes 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.
+**
+******************************************************************************
+** @attention
+**
+** Copyright (c) 2021 STMicroelectronics.
+** All rights reserved.
+**
+** This software is licensed under terms that can be found in the LICENSE file
+** in the root directory of this software component.
+** If no LICENSE file comes with this software, it is provided AS-IS.
+**
+******************************************************************************
+*/
+
+/* Entry Point */
+ENTRY(Reset_Handler)
+
+/* Memories definition */
+MEMORY
+{
+  CCMRAM    (xrw)    : ORIGIN = 0x10000000,   LENGTH = 64K
+  RAM    (xrw)    : ORIGIN = 0x20000000,   LENGTH = 192K
+  FLASH    (rx)    : ORIGIN = 0x8000000,   LENGTH = 2048K
+}
+
+/* Highest address of the user mode stack */
+_estack = ORIGIN(RAM) + LENGTH(RAM); /* end of "RAM" Ram type memory */
+
+_Min_Heap_Size = 0x200; /* required amount of heap */
+_Min_Stack_Size = 0x400; /* required amount of stack */
+
+/* Sections */
+SECTIONS
+{
+  /* The startup code into "FLASH" Rom type memory */
+  .isr_vector :
+  {
+    . = ALIGN(4);
+    KEEP(*(.isr_vector)) /* Startup code */
+    . = ALIGN(4);
+  } >FLASH
+
+  /* The program code and other data into "FLASH" Rom type memory */
+  .text :
+  {
+    . = ALIGN(4);
+    *(.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(4);
+    _etext = .;        /* define a global symbols at end of code */
+  } >FLASH
+
+  /* Constant data into "FLASH" Rom type memory */
+  .rodata :
+  {
+    . = ALIGN(4);
+    *(.rodata)         /* .rodata sections (constants, strings, etc.) */
+    *(.rodata*)        /* .rodata* sections (constants, strings, etc.) */
+    . = ALIGN(4);
+  } >FLASH
+
+  .ARM.extab   : {
+    . = ALIGN(4);
+    *(.ARM.extab* .gnu.linkonce.armextab.*)
+    . = ALIGN(4);
+  } >FLASH
+
+  .ARM : {
+    . = ALIGN(4);
+    __exidx_start = .;
+    *(.ARM.exidx*)
+    __exidx_end = .;
+    . = ALIGN(4);
+  } >FLASH
+
+  .preinit_array     :
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__preinit_array_start = .);
+    KEEP (*(.preinit_array*))
+    PROVIDE_HIDDEN (__preinit_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+
+  .init_array :
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__init_array_start = .);
+    KEEP (*(SORT(.init_array.*)))
+    KEEP (*(.init_array*))
+    PROVIDE_HIDDEN (__init_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+
+  .fini_array :
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__fini_array_start = .);
+    KEEP (*(SORT(.fini_array.*)))
+    KEEP (*(.fini_array*))
+    PROVIDE_HIDDEN (__fini_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+
+  /* Used by the startup to initialize data */
+  _sidata = LOADADDR(.data);
+
+  /* Initialized data sections into "RAM" Ram type memory */
+  .data :
+  {
+    . = ALIGN(4);
+    _sdata = .;        /* create a global symbol at data start */
+    *(.data)           /* .data sections */
+    *(.data*)          /* .data* sections */
+    *(.RamFunc)        /* .RamFunc sections */
+    *(.RamFunc*)       /* .RamFunc* sections */
+
+    . = ALIGN(4);
+    _edata = .;        /* define a global symbol at data end */
+
+  } >RAM AT> FLASH
+
+  _siccmram = LOADADDR(.ccmram);
+
+  /* CCM-RAM section
+  *
+  * IMPORTANT NOTE!
+  * If initialized variables will be placed in this section,
+  * the startup code needs to be modified to copy the init-values.
+  */
+  .ccmram :
+  {
+    . = ALIGN(4);
+    _sccmram = .;       /* create a global symbol at ccmram start */
+    *(.ccmram)
+    *(.ccmram*)
+
+    . = ALIGN(4);
+    _eccmram = .;       /* create a global symbol at ccmram end */
+  } >CCMRAM AT> FLASH
+
+  /* Uninitialized data section into "RAM" Ram type memory */
+  . = ALIGN(4);
+  .bss :
+  {
+    /* This is used by the startup in order to initialize the .bss section */
+    _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" Ram  type memory left */
+  ._user_heap_stack :
+  {
+    . = ALIGN(8);
+    PROVIDE ( end = . );
+    PROVIDE ( _end = . );
+    . = . + _Min_Heap_Size;
+    . = . + _Min_Stack_Size;
+    . = ALIGN(8);
+  } >RAM
+
+  /* Remove information from the compiler libraries */
+  /DISCARD/ :
+  {
+    libc.a ( * )
+    libm.a ( * )
+    libgcc.a ( * )
+  }
+
+  .ARM.attributes 0 : { *(.ARM.attributes) }
+}

third_party/tinyusb/hw/bsp/stm32f4/boards/stm32f439nucleo/board.cmake

@@ -0,0 +1,11 @@
+set(MCU_VARIANT stm32f439xx)
+set(JLINK_DEVICE stm32f439zi)
+
+set(LD_FILE_GNU ${CMAKE_CURRENT_LIST_DIR}/STM32F439ZITX_FLASH.ld)
+
+function(update_board TARGET)
+  target_compile_definitions(${TARGET} PUBLIC
+    STM32F439xx
+    BOARD_TUD_RHPORT=0
+    )
+endfunction()

third_party/tinyusb/hw/bsp/stm32f4/boards/stm32f439nucleo/board.h

@@ -0,0 +1,131 @@
+/*
+ * 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.
+ */
+
+/* metadata:
+   name: STM32 F439 Nucleo
+   url: https://www.st.com/en/evaluation-tools/nucleo-f439zi.html
+*/
+
+#ifndef BOARD_H_
+#define BOARD_H_
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+
+// UART Enable for STLink VCOM
+#define UART_ID               3
+
+#define PINID_LED      0
+#define PINID_BUTTON   1
+#define PINID_UART_TX  2
+#define PINID_UART_RX  3
+#define PINID_VBUS0_EN 4
+
+#define VBUS_SENSE_EN  1
+
+static board_pindef_t board_pindef[] = {
+  { // LED
+    .port = GPIOB,
+    .pin_init = { .Pin = GPIO_PIN_14, .Mode = GPIO_MODE_OUTPUT_PP, .Pull = GPIO_PULLUP, .Speed = GPIO_SPEED_HIGH, .Alternate = 0 },
+    .active_state = 0
+  },
+  { // BUTTON
+    .port = GPIOC,
+    .pin_init = { .Pin = GPIO_PIN_13, .Mode = GPIO_MODE_INPUT, .Pull = GPIO_PULLDOWN, .Speed = GPIO_SPEED_HIGH, .Alternate = 0 },
+    .active_state = 1
+  },
+  { // UART TX
+    .port = GPIOD,
+    .pin_init = { .Pin = GPIO_PIN_8, .Mode = GPIO_MODE_AF_PP, .Pull = GPIO_PULLUP, .Speed = GPIO_SPEED_HIGH, .Alternate = GPIO_AF7_USART3 },
+    .active_state = 0
+  },
+  { // UART RX
+    .port = GPIOD,
+    .pin_init = { .Pin = GPIO_PIN_9, .Mode = GPIO_MODE_AF_PP, .Pull = GPIO_PULLUP, .Speed = GPIO_SPEED_HIGH, .Alternate = GPIO_AF7_USART3 },
+    .active_state = 0
+  },
+  { // VBUS0 EN
+    .port = GPIOG,
+    .pin_init = { .Pin = GPIO_PIN_6, .Mode = GPIO_MODE_OUTPUT_PP, .Pull = GPIO_PULLDOWN, .Speed = GPIO_SPEED_HIGH, .Alternate = 0 },
+    .active_state = 1
+  }
+};
+
+//--------------------------------------------------------------------+
+// RCC Clock
+//--------------------------------------------------------------------+
+static inline void board_clock_init(void)
+{
+  RCC_ClkInitTypeDef RCC_ClkInitStruct;
+  RCC_OscInitTypeDef RCC_OscInitStruct;
+
+  /* Enable Power Control clock */
+  __HAL_RCC_PWR_CLK_ENABLE();
+
+  /* The voltage scaling allows optimizing the power consumption when the
+   * device is clocked below the maximum system frequency, to update the
+   * voltage scaling value regarding system frequency refer to product
+   * datasheet.  */
+  __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
+
+  /* Enable HSE Oscillator and activate PLL with HSE as source */
+  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
+  RCC_OscInitStruct.HSEState = RCC_HSE_BYPASS;
+  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
+  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
+  RCC_OscInitStruct.PLL.PLLM = HSE_VALUE/1000000;
+  RCC_OscInitStruct.PLL.PLLN = 336;
+  RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
+  RCC_OscInitStruct.PLL.PLLQ = 7;
+  HAL_RCC_OscConfig(&RCC_OscInitStruct);
+
+  /* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2
+   * clocks dividers */
+  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK |
+                                RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2;
+
+  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
+  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
+  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
+  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;
+  HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5);
+
+}
+
+static inline void board_vbus_set(uint8_t rhport, bool state) {
+  if (rhport == 0) {
+    board_pindef_t* pindef = &board_pindef[PINID_VBUS0_EN];
+    HAL_GPIO_WritePin(pindef->port, pindef->pin_init.Pin, state == pindef->active_state ? GPIO_PIN_SET : GPIO_PIN_RESET);
+  }
+}
+
+#ifdef __cplusplus
+ }
+#endif
+
+#endif /* BOARD_H_ */

third_party/tinyusb/hw/bsp/stm32f4/boards/stm32f439nucleo/board.mk

@@ -0,0 +1,12 @@
+CFLAGS += -DSTM32F439xx
+
+# GCC
+SRC_S += $(ST_CMSIS)/Source/Templates/gcc/startup_stm32f439xx.s
+LD_FILE = $(BOARD_PATH)/STM32F439ZITX_FLASH.ld
+
+
+# For flash-jlink target
+JLINK_DEVICE = stm32f439zi
+
+# flash target using on-board stlink
+flash: flash-stlink