AM625: 以太网启动问题，通过以太网boot

1、我修改了Rules.make

# u-boot machine configs for A53 and R5
#UBOOT_MACHINE=am62x_evm_a53_defconfig
UBOOT_MACHINE=am62x_evm_a53_ethboot_defconfig
#UBOOT_MACHINE_R5=am62x_evm_r5_defconfig
UBOOT_MACHINE_R5=am62x_evm_r5_ethboot_defconfig

2、我配置了dhcpd，像说明一样

subnet 10.0.0.0 netmask 255.0.0.0
{
   range dynamic-bootp 10.0.0.2 10.0.0.16;
   if substring (option vendor-class-identifier, 0, 16) = "TI K3 Bootp Boot"
   {
      filename "tiboot3.bin";
   } elsif substring (option vendor-class-identifier, 0, 19) = "AM62X U-Boot R5 SPL"
   {
      filename "tispl.bin";
   } elsif substring (option vendor-class-identifier, 0, 20) = "AM62X U-Boot A53 SPL"
   {
      filename "u-boot.img";
   }

   range 10.0.0.17 10.0.0.25;
   default-lease-time 60000;
   max-lease-time 720000;
   next-server 10.0.0.1;
}

问题：网络启动不了，会卡在Loading Environment from nowhere... OK这句
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