Add WCH CH32V307 port

.gitmodules

@@ -146,3 +146,6 @@
 [submodule "hw/mcu/allwinner"]
 	path = hw/mcu/allwinner
 	url = https://github.com/hathach/allwinner_driver.git
+[submodule "hw/mcu/wch/ch32v307"]
+	path = hw/mcu/wch/ch32v307
+	url = https://github.com/openwch/ch32v307.git

hw/bsp/ch32v307/Link.ld

@@ -0,0 +1,170 @@
+ENTRY( _start )
+
+__stack_size = 4096;
+
+PROVIDE( _stack_size = __stack_size );
+
+
+MEMORY
+{
+	FLASH (rx) : ORIGIN = 0x00000000, LENGTH = 288K
+	RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 32K
+}
+
+
+SECTIONS
+{
+
+	.init :
+	{
+		_sinit = .;
+		. = ALIGN(4);
+		KEEP(*(SORT_NONE(.init)))
+		. = ALIGN(4);
+		_einit = .;
+	} >FLASH AT>FLASH
+
+  .vector :
+  {
+      *(.vector);
+	  . = ALIGN(64);
+  } >FLASH AT>FLASH
+
+	.text :
+	{
+		. = ALIGN(4);
+		*(.text)
+		*(.text.*)
+		*(.rodata)
+		*(.rodata*)
+		*(.glue_7)
+		*(.glue_7t)
+		*(.gnu.linkonce.t.*)
+		. = ALIGN(4);
+	} >FLASH AT>FLASH 
+
+	.fini :
+	{
+		KEEP(*(SORT_NONE(.fini)))
+		. = ALIGN(4);
+	} >FLASH AT>FLASH
+
+	PROVIDE( _etext = . );
+	PROVIDE( _eitcm = . );	
+
+	.preinit_array  :
+	{
+	  PROVIDE_HIDDEN (__preinit_array_start = .);
+	  KEEP (*(.preinit_array))
+	  PROVIDE_HIDDEN (__preinit_array_end = .);
+	} >FLASH AT>FLASH 
+
+	.init_array     :
+	{
+	  PROVIDE_HIDDEN (__init_array_start = .);
+	  KEEP (*(SORT_BY_INIT_PRIORITY(.init_array.*) SORT_BY_INIT_PRIORITY(.ctors.*)))
+	  KEEP (*(.init_array EXCLUDE_FILE (*crtbegin.o *crtbegin?.o *crtend.o *crtend?.o ) .ctors))
+	  PROVIDE_HIDDEN (__init_array_end = .);
+	} >FLASH AT>FLASH 
+
+	.fini_array     :
+	{
+	  PROVIDE_HIDDEN (__fini_array_start = .);
+	  KEEP (*(SORT_BY_INIT_PRIORITY(.fini_array.*) SORT_BY_INIT_PRIORITY(.dtors.*)))
+	  KEEP (*(.fini_array EXCLUDE_FILE (*crtbegin.o *crtbegin?.o *crtend.o *crtend?.o ) .dtors))
+	  PROVIDE_HIDDEN (__fini_array_end = .);
+	} >FLASH AT>FLASH 
+
+	.ctors          :
+	{
+	  /* gcc uses crtbegin.o to find the start of
+	     the constructors, so we make sure it is
+	     first.  Because this is a wildcard, it
+	     doesn't matter if the user does not
+	     actually link against crtbegin.o; the
+	     linker won't look for a file to match a
+	     wildcard.  The wildcard also means that it
+	     doesn't matter which directory crtbegin.o
+	     is in.  */
+	  KEEP (*crtbegin.o(.ctors))
+	  KEEP (*crtbegin?.o(.ctors))
+	  /* We don't want to include the .ctor section from
+	     the crtend.o file until after the sorted ctors.
+	     The .ctor section from the crtend file contains the
+	     end of ctors marker and it must be last */
+	  KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .ctors))
+	  KEEP (*(SORT(.ctors.*)))
+	  KEEP (*(.ctors))
+	} >FLASH AT>FLASH 
+
+	.dtors          :
+	{
+	  KEEP (*crtbegin.o(.dtors))
+	  KEEP (*crtbegin?.o(.dtors))
+	  KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .dtors))
+	  KEEP (*(SORT(.dtors.*)))
+	  KEEP (*(.dtors))
+	} >FLASH AT>FLASH 
+
+	.dalign :
+	{
+		. = ALIGN(4);
+		PROVIDE(_data_vma = .);
+	} >RAM AT>FLASH	
+
+	.dlalign :
+	{
+		. = ALIGN(4); 
+		PROVIDE(_data_lma = .);
+	} >FLASH AT>FLASH
+
+	.data :
+	{
+    	*(.gnu.linkonce.r.*)
+    	*(.data .data.*)
+    	*(.gnu.linkonce.d.*)
+		. = ALIGN(8);
+    	PROVIDE( __global_pointer$ = . + 0x800 );
+    	*(.sdata .sdata.*)
+		*(.sdata2.*)
+    	*(.gnu.linkonce.s.*)
+    	. = ALIGN(8);
+    	*(.srodata.cst16)
+    	*(.srodata.cst8)
+    	*(.srodata.cst4)
+    	*(.srodata.cst2)
+    	*(.srodata .srodata.*)
+    	. = ALIGN(4);
+		PROVIDE( _edata = .);
+	} >RAM AT>FLASH
+
+	.bss :
+	{
+		. = ALIGN(4);
+		PROVIDE( _sbss = .);
+  	    *(.sbss*)
+        *(.gnu.linkonce.sb.*)
+		*(.bss*)
+     	*(.gnu.linkonce.b.*)		
+		*(COMMON*)
+		. = ALIGN(4);
+		PROVIDE( _ebss = .);
+	} >RAM AT>FLASH
+
+	PROVIDE( _end = _ebss);
+	PROVIDE( end = . );
+
+    .stack ORIGIN(RAM) + LENGTH(RAM) - __stack_size :
+    {
+        PROVIDE( _heap_end = . );    
+        . = ALIGN(4);
+        PROVIDE(_susrstack = . );
+        . = . + __stack_size;
+        PROVIDE( _eusrstack = .);
+        __freertos_irq_stack_top = .;
+    } >RAM 
+
+}
+
+
+

hw/bsp/ch32v307/boards/CH32V307V-R1-1v0/board.mk

@@ -0,0 +1,3 @@
+LINKER_SCRIPTS = $(BOARD_PATH)/../..
+
+LD_FILE = $(LINKER_SCRIPTS)/Link.ld # CH32V307

hw/bsp/ch32v307/boards/CH32V307V-R1-1v0/debug_uart.c

@@ -0,0 +1,110 @@
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2022 Greg Davill
+ *
+ * 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.
+ */
+
+#include "debug_uart.h"
+#include <ch32v30x.h>
+
+
+#define UART_RINGBUFFER_SIZE_TX 64
+#define UART_RINGBUFFER_MASK_TX (UART_RINGBUFFER_SIZE_TX-1)
+
+static char tx_buf[UART_RINGBUFFER_SIZE_TX];
+static unsigned int tx_produce;
+static volatile unsigned int tx_consume;
+
+void USART1_IRQHandler(void) __attribute__((naked));
+void USART1_IRQHandler(void) { 
+      __asm volatile ("call USART1_IRQHandler_impl; mret");
+}
+
+__attribute__((used)) void USART1_IRQHandler_impl(void)
+{
+	if(USART_GetITStatus(USART1, USART_IT_TC) != RESET)
+    {
+        USART_ClearITPendingBit(USART1, USART_IT_TC);
+
+		if(tx_consume != tx_produce) {
+			USART_SendData(USART1, tx_buf[tx_consume]);
+			tx_consume = (tx_consume + 1) & UART_RINGBUFFER_MASK_TX;
+		}
+    }
+
+}
+
+void uart_write(char c)
+{
+	unsigned int tx_produce_next = (tx_produce + 1) & UART_RINGBUFFER_MASK_TX;
+
+    NVIC_DisableIRQ(USART1_IRQn);
+    if((tx_consume != tx_produce) || (USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET)) {
+		tx_buf[tx_produce] = c;
+		tx_produce = tx_produce_next;
+	} else {
+		USART_SendData(USART1, c);
+	}
+    NVIC_EnableIRQ(USART1_IRQn);
+}
+
+
+void uart_sync(void)
+{
+	while(tx_consume != tx_produce);
+}
+
+
+void USART_Printf_Init(uint32_t baudrate)
+{
+    GPIO_InitTypeDef  GPIO_InitStructure;
+    USART_InitTypeDef USART_InitStructure;
+
+	tx_produce = 0;
+	tx_consume = 0;
+
+    RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1 | RCC_APB2Periph_GPIOA, ENABLE);
+
+    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
+    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
+    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
+    GPIO_Init(GPIOA, &GPIO_InitStructure);
+
+    USART_InitStructure.USART_BaudRate = baudrate;
+    USART_InitStructure.USART_WordLength = USART_WordLength_8b;
+    USART_InitStructure.USART_StopBits = USART_StopBits_1;
+    USART_InitStructure.USART_Parity = USART_Parity_No;
+    USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
+    USART_InitStructure.USART_Mode = USART_Mode_Tx;
+
+    USART_Init(USART1, &USART_InitStructure);
+    USART_ITConfig(USART1, USART_IT_TC, ENABLE);
+    USART_Cmd(USART1, ENABLE);
+
+    NVIC_InitTypeDef  NVIC_InitStructure = {0};
+    NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
+    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
+    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3;
+    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
+    NVIC_Init(&NVIC_InitStructure);
+}

hw/bsp/ch32v307/boards/CH32V307V-R1-1v0/debug_uart.h

@@ -0,0 +1,31 @@
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2022 Greg Davill
+ *
+ * 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.
+ */
+
+#include <stdint.h>
+
+void uart_write(char c);
+void uart_sync(void);
+void USART_Printf_Init(uint32_t baudrate);

hw/bsp/ch32v307/ch32v30x_conf.h

@@ -0,0 +1,43 @@
+/********************************** (C) COPYRIGHT *******************************
+* File Name          : ch32v30x_conf.h
+* Author             : WCH
+* Version            : V1.0.0
+* Date               : 2021/06/06
+* Description        : Library configuration file.
+* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
+* SPDX-License-Identifier: Apache-2.0
+*******************************************************************************/ 
+#ifndef __CH32V30x_CONF_H
+#define __CH32V30x_CONF_H
+
+#include "ch32v30x_adc.h"
+#include "ch32v30x_bkp.h"
+#include "ch32v30x_can.h"
+#include "ch32v30x_crc.h"
+#include "ch32v30x_dac.h"
+#include "ch32v30x_dbgmcu.h"
+#include "ch32v30x_dma.h"
+#include "ch32v30x_exti.h"
+#include "ch32v30x_flash.h"
+#include "ch32v30x_fsmc.h"
+#include "ch32v30x_gpio.h"
+#include "ch32v30x_i2c.h"
+#include "ch32v30x_iwdg.h"
+#include "ch32v30x_pwr.h"
+#include "ch32v30x_rcc.h"
+#include "ch32v30x_rtc.h"
+#include "ch32v30x_sdio.h"
+#include "ch32v30x_spi.h"
+#include "ch32v30x_tim.h"
+#include "ch32v30x_usart.h"
+#include "ch32v30x_wwdg.h"
+#include "ch32v30x_it.h"
+#include "ch32v30x_misc.h"
+
+
+#endif /* __CH32V30x_CONF_H */
+
+
+
+
+