nm-memory modify (constant address)ping-send ICMP ECHO_REQUEST to network host pmic-PMIC printenv-print environment variables protect- enable or disable FLASHwriteprotection reset-Perform RESET of the CPU run- run commandsinan environment variable save- savefileto a filesystem saveenv-save environmen...
include/env_default.h定义了很多环境变量,如bootargs,bootdelay,bootcmd等: 由于没有定义DEFAULT_ENV_INSTANCE_EMBEDDED和CONFIG_SYS_REDUNDAND_ENVIRONMENT,因此 uchar default_environment[]数组保存环境变量。 1.3.4.1 bootcmd展开 如CONFIG_BOOTCOMMAND等一系列宏都是定义在include/configs/mx6ull_alientek_emmc.h: u...
nm-memorymodify(constant address)ping-sendICMPECHO_REQUESTto network host printenv-print environment variables reginfo-print register information reset-PerformRESEToftheCPUrun-run commandsinan environment variable saveenv-save environment variables to persistent storage setenv-setenvironment variables showvar-p...
unsigned long reloc_off; /* Relocation Offset */ unsigned long env_addr; /* Address of Environment struct */ unsigned long env_valid; /* Checksum of Environment valid? */ unsigned long fb_base; /* base address of frame buffer */ #ifdef CONFIG_VFD unsigned char vfd_type; /* display t...
Bootloader的启动过程可以分为单阶段、多阶段两种。通常多阶段的 Bootloader能提供更为复杂的功能以及更好的可移植性。从固态存储设备上启动的 Bootloader大多都是两阶段的启动过程。第一阶段使用汇编来实现,它完成一些依赖于CPU体系结构的初始化,并调用第二阶段的代码;第二阶段则通常使用C语言来实现,这样可以实...
reset-PerformRESEToftheCPUrun-run commandsinan environment variable save-save file to a filesystem saveenv-save environment variables to persistent storage scsi-SCSIsub-system scsiboot-bootfromSCSIdevice se-se md|mw|update[address][data]setenv-setenvironment variables ...
ar7240>setenv ipaddr 192.168.56.2//AP的IP地址 ar7240>setenv serverip 192.168.56.1//TFTP服务器的IP地址 ar7240>saveenvSaving Environment to Flash... Erasing Flash...Writing to Flash... done 开始切换 #将AP切换为FAT模式,设置目标软件包文件名(含后缀)。
unsigned long env_valid; /* Checksum of Environment valid? */ unsigned long fb_base; /* base address of frame buffer */ #ifdef CONFIG_VFD unsigned char vfd_type; /* display type */ #endif void **jt; /* jump table */ } gd_t; ...
nm - memory modify (constant address)ping - send ICMP ECHO_REQUEST to network host printenv- print environment variables reginfo - print register information reset - Perform RESET of theCPUrun - run commands in an environment variable saveenv - save environment variables to persistent storage ...
unsigned longenv_valid;//环境变量使用标志/* Checksum of Environment valid? */ unsigned longfb_base;//fb基地址/* base address of frame buffer */ #ifdef CONFIG_VFD unsigned charvfd_type;///* display type */ #endif void**jt;//跳转表/* jump table */ ...