这些都在uuu的说明文档里面有。
搜索 fatwrite
下面脚本是把 test-fatwrite.txt 写到了 fat 区去。
test-fatwrite.uuu
uuu_version 1.2.39
# This command will be run when i.MX6/7 i.MX8MM, i.MX8MQ
SDP: boot -f imx-boot-imx8mmevk-sd.bin-flash_evk
# This command will be run when ROM support stream mode
# i.MX8QXP, i.MX8QM
SDPS: boot -f imx-boot-imx8mmevk-sd.bin-flash_evk
# These commands will be run when use SPL and will be skipped if no spl
# SDPU will be deprecated. please use SDPV instead of SDPU
# {
SDPU: delay 1000
SDPU: write -f imx-boot-imx8mmevk-sd.bin-flash_evk -offset 0x57c00
SDPU: jump
# }
# These commands will be run when use SPL and will be skipped if no spl
# if (SPL support SDPV)
# {
SDPV: delay 1000
SDPV: write -f imx-boot-imx8mmevk-sd.bin-flash_evk -skipspl
SDPV: jump
# }
FB: ucmd setenv fastboot_dev mmc
FB: ucmd setenv mmcdev ${emmc_dev}
FB: ucmd mmc dev ${emmc_dev}
FB: ucmd setenv fastboot_buffer ${loadaddr}
FB: download -f test-fatwrite.txt
FB: ucmd fatwrite mmc ${mmcdev}:${mmcpart} ${loadaddr} test-fatwrite.txt ${fastboot_bytes}
FB: done