mx50
#hid/bulk,[old_header,]max packet size,dcd_addr,{ram start, ram size}(repeat valid ram areas)
hid,64,0xf8006400,0xf8006400,128M
#file:dcd,plug,load nnn,jump [nnn/header/header2]
#jump nnn - new header is placed after last downloaded word
#            entire file is loaded before jump, needs load nnn as well
# i.e. file:load nnn,jump nnn
#jump header - only length parameter is downloaded
#     header - uses existing header(error if none), but clears plug and dcd values unless plug also specified
#     header2 - uses 2nd header found(error if none)
#plug - without jump uses header but clears plug flag to stop after plug execution

SPL:dcd
u-boot.bin:load 0x77800000
SPL:load 0xF8006400, jump header
