/etc/fw_setenv、/etc/fw_printenv是用來設定啟動變數的程式
SdUpgradeImage=miyoo283_fw.img
baudrate=115200
bootargs=console=ttyS0,115200 root=/dev/mtdblock4 rootfstype=squashfs ro init=/linuxrc LX_MEM=0x7f00000 mma_heap=mma_heap_name0,miu=0,sz=0x1500000 mma_memblock_remove=1 highres=off mmap_reserved=fb,miu=0,sz=0x300000,max_start_off=0x7C00000,max_end_off=0x7F00000
bootcmd=gpio output 85 1; bootlogo 0 0 0 0 0; gpio output 4 1; mw 1f001cc0 11; gpio out 8 0; sf probe 0;sf read 0x22000000 ${sf_kernel_start} ${sf_kernel_size}; gpio out 8 1; bootm 0x22000000
bootdelay=0
cpu_part_start=14270000
dispout=K101_IM2BVL
ethact=sstar_emac
ethaddr=00:30:1b:ba:02:db
filesize=17634
miyoo_upgrade=gpio output 4 1; bootlogo 1 0 0 0 0;sdstar;
miyoo_version=202201082152
sdfw_version=202110071805
sf_kernel_size=200000
sf_kernel_start=60000
sf_part_size=20000
sf_part_start=270000
stderr=serial
stdin=serial
stdout=serial
usb_folder=images