sim/rpmsg_uart: add sim rpmsg uart support

add sim_rpmsg_port_uart.c to verify the rpmsg port uart wrapper layer,

The physical transport layer could be:
1. SIM_RAM_UART(current)
2. SIM_UART(through "socat" virtual "/dev/pts/*", "socat" could monitor the bus data)

Signed-off-by: chao an <[email protected]>

arch/sim/src/Makefile

@@ -265,6 +265,10 @@ ifeq ($(CONFIG_RPMSG_VIRTIO_LITE),y)
   CSRCS += sim_rpmsg_virtio.c
 endif
 
+ifeq ($(CONFIG_RPMSG_PORT_UART),y)
+  CSRCS += sim_rpmsg_port_uart.c
+endif
+
 ifeq ($(CONFIG_RPTUN),y)
   CSRCS += sim_rptun.c
 endif

arch/sim/src/sim/CMakeLists.txt

@@ -123,6 +123,10 @@ if(CONFIG_RPMSG_VIRTIO_LITE)
   list(APPEND SRCS sim_rpmsg_virtio.c)
 endif()
 
+if(CONFIG_RPMSG_PORT_UART)
+  list(APPEND SRCS sim_rpmsg_port_uart.c)
+endif()
+
 if(CONFIG_RPTUN)
   list(APPEND SRCS sim_rptun.c)
 endif()

arch/sim/src/sim/sim_internal.h

@@ -420,6 +420,13 @@ int sim_rpmsg_virtio_init(const char *shmemname, const char *cpuname,
                           bool master);
 #endif
 
+/* sim_rpmsg_port_uart.c ****************************************************/
+
+#ifdef CONFIG_RPMSG_PORT_UART
+int sim_rpmsg_port_uart_init(const char *localcpu, const char *remotecpu,
+                             const char *uartpath);
+#endif
+
 /* sim_hcisocket.c **********************************************************/
 
 #ifdef CONFIG_SIM_HCISOCKET

arch/sim/src/sim/sim_rpmsg_port_uart.c

@@ -0,0 +1,49 @@
+/****************************************************************************
+ * arch/sim/src/sim/sim_rpmsg_port_uart.c
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/rpmsg/rpmsg_port.h>
+
+#include "sim_internal.h"
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+int sim_rpmsg_port_uart_init(const char *localcpu, const char *remotecpu,
+                             const char *uartpath)
+{
+  struct rpmsg_port_config_s config =
+    {
+      .remotecpu = remotecpu,
+      .txnum = 10,
+      .rxnum = 10,
+      .txlen = 2048,
+      .rxlen = 2048
+    };
+
+  return rpmsg_port_uart_initialize(&config, uartpath, localcpu);
+}
+

boards/sim/sim/sim/configs/rpproxy_uart/defconfig

@@ -0,0 +1,89 @@
+#
+# This file is autogenerated: PLEASE DO NOT EDIT IT.
+#
+# You can use "make menuconfig" to make any modifications to the installed .config file.
+# You can then do "make savedefconfig" to generate a new defconfig file that includes your
+# modifications.
+#
+# CONFIG_NET_ETHERNET is not set
+CONFIG_ARCH="sim"
+CONFIG_ARCH_BOARD="sim"
+CONFIG_ARCH_BOARD_SIM=y
+CONFIG_ARCH_CHIP="sim"
+CONFIG_ARCH_SIM=y
+CONFIG_BLK_RPMSG=y
+CONFIG_BOARDCTL_POWEROFF=y
+CONFIG_BUILTIN=y
+CONFIG_DEBUG_ASSERTIONS=y
+CONFIG_DEBUG_FEATURES=y
+CONFIG_DEBUG_FS=y
+CONFIG_DEBUG_FS_ERROR=y
+CONFIG_DEBUG_SYMBOLS=y
+CONFIG_DEV_RPMSG=y
+CONFIG_DEV_SIMPLE_ADDRENV=y
+CONFIG_EXAMPLES_HELLO=y
+CONFIG_EXAMPLES_RPMSGSOCKET=y
+CONFIG_FS_PROCFS=y
+CONFIG_FS_RPMSGFS=y
+CONFIG_IDLETHREAD_STACKSIZE=4096
+CONFIG_INIT_ENTRYPOINT="nsh_main"
+CONFIG_INPUT=y
+CONFIG_LIBC_HOSTNAME="proxy"
+CONFIG_MTD=y
+CONFIG_MTD_BYTE_WRITE=y
+CONFIG_NDEBUG=y
+CONFIG_NET=y
+CONFIG_NETDB_DNSCLIENT=y
+CONFIG_NETDB_DNSCLIENT_MAXRESPONSE=176
+CONFIG_NETDB_DNSCLIENT_RECV_TIMEOUT=3
+CONFIG_NETDB_DNSSERVER_IPv4ADDR=0x771d1d1d
+CONFIG_NETUTILS_IPERF=y
+CONFIG_NET_RPMSG=y
+CONFIG_NET_USRSOCK=y
+CONFIG_NET_USRSOCK_ICMP=y
+CONFIG_NET_USRSOCK_RPMSG=y
+CONFIG_NET_USRSOCK_RPMSG_CPUNAME="server"
+CONFIG_NET_USRSOCK_TCP=y
+CONFIG_NET_USRSOCK_UDP=y
+CONFIG_NSH_ARCHINIT=y
+CONFIG_NSH_BUILTIN_APPS=y
+CONFIG_NSH_PROMPT_STRING="proxy> "
+CONFIG_NSH_READLINE=y
+CONFIG_OPENAMP_DEBUG=y
+CONFIG_RAM_UART=y
+CONFIG_READLINE_CMD_HISTORY=y
+CONFIG_READLINE_TABCOMPLETION=y
+CONFIG_RPMSGMTD=y
+CONFIG_RPMSG_PING=y
+CONFIG_RPMSG_PORT_UART=y
+CONFIG_RPMSG_UART=y
+CONFIG_RTC=y
+CONFIG_RTC_ARCH=y
+CONFIG_RTC_DRIVER=y
+CONFIG_RTC_EXTERNAL=y
+CONFIG_RTC_RPMSG=y
+CONFIG_RTC_RPMSG_SERVER_NAME="server"
+CONFIG_SCHED_CHILD_STATUS=y
+CONFIG_SCHED_HAVE_PARENT=y
+CONFIG_SCHED_WAITPID=y
+CONFIG_SENSORS=y
+CONFIG_SENSORS_RPMSG=y
+CONFIG_SIG_DEFAULT=y
+CONFIG_SIM_RAM_UART0=y
+CONFIG_SIM_RAM_UART0_SLAVE=y
+CONFIG_SIM_RAM_UART=y
+CONFIG_SYSLOG_PREFIX=y
+CONFIG_SYSLOG_PREFIX_STRING="proxy"
+CONFIG_SYSLOG_RPMSG=y
+CONFIG_SYSLOG_RPMSG_SERVER_NAME="server"
+CONFIG_SYSLOG_TIMESTAMP=y
+CONFIG_SYSTEM_CLE=y
+CONFIG_SYSTEM_NSH=y
+CONFIG_SYSTEM_PING=y
+CONFIG_UINPUT_BUTTONS=y
+CONFIG_UINPUT_KEYBOARD=y
+CONFIG_UINPUT_RPMSG=y
+CONFIG_UINPUT_TOUCH=y
+CONFIG_UORB=y
+CONFIG_UORB_LISTENER=y
+CONFIG_USENSOR=y

boards/sim/sim/sim/configs/rpserver_uart/defconfig

@@ -0,0 +1,113 @@
+#
+# This file is autogenerated: PLEASE DO NOT EDIT IT.
+#
+# You can use "make menuconfig" to make any modifications to the installed .config file.
+# You can then do "make savedefconfig" to generate a new defconfig file that includes your
+# modifications.
+#
+CONFIG_ARCH="sim"
+CONFIG_ARCH_BOARD="sim"
+CONFIG_ARCH_BOARD_SIM=y
+CONFIG_ARCH_CHIP="sim"
+CONFIG_ARCH_SIM=y
+CONFIG_BLK_RPMSG_SERVER=y
+CONFIG_BOARDCTL_POWEROFF=y
+CONFIG_BUILTIN=y
+CONFIG_CLK=y
+CONFIG_CLK_RPMSG=y
+CONFIG_DEBUG_ASSERTIONS=y
+CONFIG_DEBUG_FEATURES=y
+CONFIG_DEBUG_FS=y
+CONFIG_DEBUG_FS_ERROR=y
+CONFIG_DEBUG_SYMBOLS=y
+CONFIG_DEV_RPMSG_SERVER=y
+CONFIG_DEV_SIMPLE_ADDRENV=y
+CONFIG_EXAMPLES_RPMSGSOCKET=y
+CONFIG_FS_HOSTFS=y
+CONFIG_FS_PROCFS=y
+CONFIG_FS_RPMSGFS_SERVER=y
+CONFIG_IDLETHREAD_STACKSIZE=4096
+CONFIG_INIT_ENTRYPOINT="nsh_main"
+CONFIG_INPUT=y
+CONFIG_IOB_BUFSIZE=256
+CONFIG_IOB_NBUFFERS=512
+CONFIG_IOB_THROTTLE=32
+CONFIG_IOEXPANDER=y
+CONFIG_IOEXPANDER_RPMSG=y
+CONFIG_LIBC_HOSTNAME="server"
+CONFIG_MTD=y
+CONFIG_MTD_BYTE_WRITE=y
+CONFIG_NDEBUG=y
+CONFIG_NET=y
+CONFIG_NETDB_DNSCLIENT=y
+CONFIG_NETDB_DNSCLIENT_MAXRESPONSE=176
+CONFIG_NETDB_DNSCLIENT_RECV_TIMEOUT=3
+CONFIG_NETDB_DNSSERVER_IPv4ADDR=0x771d1d1d
+CONFIG_NETDEV_STATISTICS=y
+CONFIG_NETINIT_DHCPC=y
+CONFIG_NETINIT_THREAD=y
+CONFIG_NETUTILS_DHCPC=y
+CONFIG_NETUTILS_IPERF=y
+CONFIG_NET_BROADCAST=y
+CONFIG_NET_ICMP_SOCKET=y
+CONFIG_NET_LOOPBACK=y
+CONFIG_NET_RPMSG=y
+CONFIG_NET_RPMSG_DRV=y
+CONFIG_NET_STATISTICS=y
+CONFIG_NET_TCP=y
+CONFIG_NET_TCPBACKLOG=y
+CONFIG_NET_TCP_WRITE_BUFFERS=y
+CONFIG_NET_UDP=y
+CONFIG_NET_UDP_WRITE_BUFFERS=y
+CONFIG_NET_USRSOCK_RPMSG_SERVER=y
+CONFIG_NSH_ARCHINIT=y
+CONFIG_NSH_BUILTIN_APPS=y
+CONFIG_NSH_PROMPT_STRING="server> "
+CONFIG_NSH_READLINE=y
+CONFIG_OPENAMP_DEBUG=y
+CONFIG_RAMMTD=y
+CONFIG_RAM_UART=y
+CONFIG_READLINE_CMD_HISTORY=y
+CONFIG_READLINE_TABCOMPLETION=y
+CONFIG_REGULATOR=y
+CONFIG_REGULATOR_RPMSG=y
+CONFIG_RPMSGMTD_SERVER=y
+CONFIG_RPMSG_PING=y
+CONFIG_RPMSG_PORT_UART=y
+CONFIG_RPMSG_UART=y
+CONFIG_RTC=y
+CONFIG_RTC_ARCH=y
+CONFIG_RTC_DRIVER=y
+CONFIG_RTC_RPMSG=y
+CONFIG_RTC_RPMSG_SERVER=y
+CONFIG_SCHED_CHILD_STATUS=y
+CONFIG_SCHED_HAVE_PARENT=y
+CONFIG_SCHED_WAITPID=y
+CONFIG_SENSORS=y
+CONFIG_SENSORS_RPMSG=y
+CONFIG_SIG_DEFAULT=y
+CONFIG_SIM_HOSTFS=y
+CONFIG_SIM_NETDEV=y
+CONFIG_SIM_NET_BRIDGE=y
+CONFIG_SIM_RAM_UART0=y
+CONFIG_SIM_RAM_UART=y
+CONFIG_SIM_RPMSG_MASTER=y
+CONFIG_SIM_UART0_NAME="/dev/ttyUSB0"
+CONFIG_SIM_UART_NUMBER=1
+CONFIG_SYSLOG_PREFIX=y
+CONFIG_SYSLOG_PREFIX_STRING="server"
+CONFIG_SYSLOG_RPMSG_SERVER=y
+CONFIG_SYSLOG_TIMESTAMP=y
+CONFIG_SYSTEM_CLE=y
+CONFIG_SYSTEM_CUTERM=y
+CONFIG_SYSTEM_CUTERM_DEFAULT_DEVICE="/dev/ttyproxy"
+CONFIG_SYSTEM_NSH=y
+CONFIG_SYSTEM_PING=y
+CONFIG_TTY_SIGINT=y
+CONFIG_UINPUT_BUTTONS=y
+CONFIG_UINPUT_KEYBOARD=y
+CONFIG_UINPUT_RPMSG=y
+CONFIG_UINPUT_TOUCH=y
+CONFIG_UORB=y
+CONFIG_UORB_LISTENER=y
+CONFIG_USENSOR=y

boards/sim/sim/sim/src/sim_bringup.c

@@ -492,6 +492,14 @@ int sim_bringup(void)
 #  endif
 #endif
 
+#ifdef CONFIG_RPMSG_PORT_UART
+#  ifdef CONFIG_SIM_RPMSG_MASTER
+  sim_rpmsg_port_uart_init("server", "proxy", "/dev/ttyVS0");
+#  else
+  sim_rpmsg_port_uart_init("proxy", "server", "/dev/ttyVS0");
+#  endif
+#endif
+
 #ifdef CONFIG_DEV_RPMSG
   rpmsgdev_register("server", "/dev/console", "/dev/server-console", 0);
   rpmsgdev_register("server", "/dev/null", "/dev/server-null", 0);