MA35D1如何与内置的M4通信

2万 · 2023-2-15 09:12

MA35D1如何与内置的M4通信

1万 · 2023-2-15 11:46

进入以下路径和进行内核配置

~/MA35D1_Buildroot$ make linux-menuconfig

内核配置

Device Drivers --->
Remoteproc drivers --->

Support for Remote Processor subsystem
<*> MA35D1 remoteproc support

Device Drivers --->
Rpmsg drivers --->
-*- RPMSG device interface
<*> MA35D1 Shared Memory Driver

配置内核设备树

~/MA35D1_Buildroot/output/build/linux-custom/arch/arm64/boot/dts/nuvoton/ma35d1.dtsi$ vi ma35d1.dtsi

rproc {

compatible = "nuvoton, ma35d1-rproc";

resets = <&reset MA35D1_RESET_CM4>;

memory-region = <&rproc_buf>;

status = "okay";

};

rpmsg {

compatible = "nuvoton,ma35d1-rpmsg";

share-mem-addr = <0x2401ff00>;

mboxes = <&wormhole 2>;

tx-smem-size = <128>;

rx-smem-size = <128>;

status = "okay";

};

hwsem: hwspinlock@40380000 {

compatible = "nuvoton,ma35d1-hwsem";

reg = <0x0 0x40380000 0x0 0x1000>;

clocks = <&clk HWS_GATE>;

clock-names = "hws_gate";

nuvoton,sys = <&sys>;

status = "okay";

};

重新编译内核

~/MA35D1_Buildroot$ make linux-rebuild

编译rpmsg.c，并拷贝到rootfs

~/MA35D1_Buildroot$ source output/host/environment-setup

~/MA35D1_Buildroot$ $CC rpmsg.c -o rpmsg

~/MA35D1_Buildroot$ cp -rf rpmsg out/images/target

拷贝Share_memory_demo.elf到rootfs

~/MA35D1_Buildroot$ cp -rf out/images/RTP-BSP out/image/target

重新打包Image

~/Buildroot_MA35D1$ make

烧录Image 到MA35D1板子
测试

# echo -n 固件路径 > /sys/module/firmware_class/parameters/path

# echo Share_memory_demo.elf > /sys/class/remoteproc/remoteproc0/firmware

# echo start > /sys/class/remoteproc/remoteproc0/state

# ./rpmsg &

只看该作者 · 2023-2-19 18:26

双内核的单片机吗？

只看该作者 · 2023-2-22 15:55

MA35D1系列为一颗异核同构的多核心微处理器

只看该作者 · 2023-2-23 15:59

基于双核 64 位 Arm® Cortex-A35 内核，执行速度可达 1 GHz，并搭载一颗 180 MHz Arm Cortex-M4 内核。