uboot启动异常及解决

1. 网络问题及解决

   • 打开STM32CubeMX
   • 选中ETH1 - A7NS（Linux）
   • Mode：RGMII（Reduced GMII）
   • 勾选ETH 125MHz Clock Input
   • 修改GPIO引脚如图所示

   Net:   No ethernet found.
   

   

   • 生成代码后，修改u-boot下

     根节点下新增ethernet0

       	aliases {
            		serial0 = &uart4;
     			//mmc0 = &sdmmc1; // solved emmc not found issue
     			mmc0 = &sdmmc2;
     			ethernet0 = &ethernet0;
         	};
     

     ethernet0节点新增以下代码

     &ethernet0 {
     	pinctrl-names = "default", "sleep";
     	pinctrl-0 = <&eth1_pins_mx>;
     	pinctrl-1 = <&eth1_sleep_pins_mx>;
     	status = "okay";
     
     	/* USER CODE BEGIN ethernet0 */
     	phy-mode = "rgmii-id";
     	max-speed = <1000>;
     	phy-handle = <&phy0>;
     
     	mdio0 {
     		#address-cells = <1>;
     		#size-cells = <0>;
     		compatible = "snps,dwmac-mdio";
     		phy0: ethernet-phy@0 {
     			reg = <0>;
     		};
     	};	
     	/* USER CODE END ethernet0 */
     };
     

   • 源代码uboot源码需要修改drivers/net/phy/phy.c - 详情参考【正点原子】STM32MP1嵌入式Linux驱动开发指南V2.1 13.2.6小节

2. 设备树使用旧版本设备树报警 - TODO

   Warning: Device tree includes old 'u-boot,dm-' tags: please fix by 2023.07!
   

3. 启动方式改成EMMC启动，加载环境变量报错

   Loading Environment from MMC... Invalid ENV offset in MMC, copy=0
   

   增加

   PED	0x09	fip-b	FIP	mmc0	0x00580000	none
   PED	0x0A	u-boot-env	ENV	mmc0	0x00980000	none
   

4. invalid MAC

   invalid MAC address 0 in OTP 00:00:00:00:00:00
   

   解决方案：

   setenv ethaddr 00:04:9f:04:d2:35
   saveenv
   

编译uboot源码

cd u-boot-stm32mp-v2023.10-stm32mp-r1
export FIP_DEPLOYDIR_ROOT=$PWD/../../FIP_artifacts
source ~/sdk6.6

make -f $PWD/../Makefile.sdk  UBOOT_DEFCONFIG=stm32mp15_defconfig UBOOT_BINARY=u-boot.dtb DEVICE_TREE=stm32mp157d-stm32mp157daa1-mx DEPLOYDIR=$FIP_DEPLOYDIR_ROOT/u-boot all

下载到板子上验证

#Opt	Id	Name	Type	Device	Offset	Binary
-	0x01	fsbl-boot	Binary	none	0x0	new/tf-a-stm32mp157d-stm32mp157daa1-mx-optee-programmer-usb.stm32
-	0x03	fip-boot	Binary	none	0x0	new/fip-stm32mp157d-stm32mp157daa1-mx-optee-programmer-usb.bin
P	0x04	fsbl1	Binary	mmc0	boot1	new/tf-a-stm32mp157d-stm32mp157daa1-mx-optee-emmc.stm32
P	0x05	fsbl2	Binary	mmc0	boot2	new/tf-a-stm32mp157d-stm32mp157daa1-mx-optee-emmc.stm32
PD	0x06	metadata1	FWU_MDATA	mmc0	0x00080000	new/metadata.bin
PD	0x07	metadata2	FWU_MDATA	mmc0	0x00100000	new/metadata.bin
P	0x08	fip-a	FIP	mmc0	0x00180000	new/fip-stm32mp157d-stm32mp157daa1-mx-optee-emmc.bin
PED	0x09	fip-b	FIP	mmc0	0x00580000	none
PED	0x0A	u-boot-env	ENV	mmc0	0x00980000	none

思考

1. 如何在STM32CubeMX上配置ethernet？如果不参考本文，你会怎么做？

2. 如何配置引脚？为什么配置Mode：RGMII和ETH 120MHz Clock Input？