Zynq7000 Linux+Bare Rtos实现

前言

**环境准备
petalinux2019.1 viavdo2019.1

开始

CPU0：
Linux + uart0
正常建目录，然后划分空间，memory setting修改一下支持

启动参数修改

修改设备树

/include/ "system-conf.dtsi"
/ {
	amba {
		remoteproc0: remoteproc@0 {
			compatible = "xlnx,zynq_remoteproc";
			reg = < 0x10000000 0x0f000000 >;
			firmware = "firmware";
			vring0 = <15>;
			vring1 = <14>;
		};
	};

	reserved-memory {
		#address-cells = <1>;
		#size-cells = <1>;
		ranges;
		
		reserved: buffer@0x1f000000 {
			no-map;
			reg = <0x1f000000 0x01000000>;		
		};	
	};

	reserved-driver@0 {
		compatible = "xlnx,reserved-memory";
      		memory-region = <&reserved>;
   	};
};

&i2c0 {
    ssd1306:ssd1306@3c {
        compatible = "solomon,ssd1306fb-i2c";
        reg = <0x3c>;
        solomon,width = <128>;
        solomon,height = <64>;
        solomon,page-offset= <0>;
    };
};

&uart1 {
    status = "disabled";
};

第二个核的程序
CPU1：
修改fsbl增加

#define sev() __asm__("sev")

#define CPU1STARTADR  0xfffffff0

void LoadCpu1(void)
{
	fsbl_printf(DEBUG_GENERAL,"FSBL: writing startaddress for cpu1\n\r");
	Xil_Out32(CPU1STARTADR, 0x1f000000);
	dmb(); //waits until write has finished
	fsbl_printf(DEBUG_GENERAL,"FSBL: sending the SEV to wake up CPU1\n\r");
	sev();
}

然后再main里面直接调用

	HandoffAddress = LoadBootImage();

	fsbl_printf(DEBUG_INFO,"Handoff Address: 0x%08lx\r\n",HandoffAddress);
	LoadCpu1();

app程序
修改ddr起始地址

修改编译宏

增加-g -DUSE_AMP=1
修改uart

整合

启动

cpu1跑 rtos
cpu0 跑linux
linux查看一下cpuinfo：

查看iomem

END

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