UUU default support protocol list

UUU is scripted base multi protocol system.

Built in config:

       Pctl     Chip            Vid     Pid     BcdVersion
        ==================================================
        SDPS:    MX8QXP          0x1fc9  0x012f  [0x0002..0xffff]
        SDPS:    MX8QM           0x1fc9  0x0129  [0x0002..0xffff]
        SDP:     MX7D            0x15a2  0x0076
        SDP:     MX6Q            0x15a2  0x0054
        SDP:     MX6D            0x15a2  0x0061
        SDP:     MX6SL           0x15a2  0x0063
        SDP:     MX6SX           0x15a2  0x0071
        SDP:     MX6UL           0x15a2  0x007d
        SDP:     MX6ULL          0x15a2  0x0080
        SDP:     MX6SLL          0x1fc9  0x0128
        SDP:     MX7ULP          0x1fc9  0x0126
        SDP:     MXRT106X        0x1fc9  0x0135
        SDP:     MX8MM           0x1fc9  0x0134
        SDP:     MX8MQ           0x1fc9  0x012b
        SDPU:    SPL             0x0525  0xb4a4  [0x0000..0x04ff]
        SDPV:    SPL1            0x0525  0xb4a4  [0x0500..0xffff]
        FBK:                     0x066f  0x9afe
        FBK:                     0x066f  0x9bff
        FB:                      0x0525  0xa4a5
        FB:                      0x18d1  0x0d02

Table 1. Table UUU Protocol to USB lower level Map

UUU Protocol	USB Low level transfer
SDP	HID i.MX6/7, i.MX8 MM, i.MX8M
SDPU\SDPV	HID uboot implement of SDP, SPL download uboot
SDPS	HID i.MX8QXP i.MX8QM
FB	winusb (windows), raw transfer by libusb
FBK	winusb (windows), raw transfer by libusb

SDP: i.MX6/7 ROM download protocol

Supported command:

Run DCD from image with ivt header

dcd   -f  <filename>

write image to address.

write -f  <filename> [-addr 0x000000] [-ivt 0]

ivt 0 means write to the address, which ivt pointer

jump to image with ivt header

jump  -f  <filename> [-ivt 0]

boot image, include (dcd, write and jump three commands)

boot  -f  <filename> [-nojump]

SDPU\SDPV: uboot implement simplified ROM SDP protocol

Uboot implemented i.MX 6/7 ROM SDP protocol. The support command the same as SDP.

SDPV is upgrade version of SDPU, which support -skipspl option for write command

See below for uboot requirement uboot-config-requirement

SDPS: i.MX8QXP and i.MX8QM ROM download protocol

send image by sdp command.

boot  -f  <filename> [-offset 0x0000]

FB: Android fastboot protocol

refer fast boot protocol

See below for uboot requirement

Support command:

getvar
ucmd <any uboot command>
acmd <any never returned uboot command, like booti, reboot>

# partition "all" means whole device.
flash [-raw2sparse] <partition> <filename>
download -f <filename>

**Some Uboot command need long time to finish. Default FB timeout is 2s. You can use below method to change timeout value

# time out set to 10000ms
FB[-t 10000]: ucmd <any uboot command>

Table 2. Table Fastboot environment

Variable	Description
fastboot_dev	fastboot flash device, support mmc and sata
fastboot_buffer	fastboot download buffer adddress
fastboot_bytes	fastboot download file size
emmc_dev	eMMC device number
sd_dev	sd slot device number

FBK: Android fastboot protocol, implement at initramfs. See project imx-uuu

Support command:

ucmd <any kernel command> and wait for command finish
acmd <any kernel command> don't wait for command finish
sync                      wait for acmlid processs finish.
ucp <soure> <destinate>   copy file from/to target
                          T:<filename> means target board file.
                          T:- means copy data to target's stdio pipe.
                          copy image T:/root/image ;download image to path /root/image
                          copy T:/root/image image ;upload /root/image to file image......

Example for transfer big file

acmd tar -            ; run tar background and get data from stdio
ucp rootfs.tar.gz T:- ; send to target stdio pipe
sync                  ; wait for tar process exit.

Linux environment:

Each command in separate process so environment can not be affect next command. Use below method to workaround this problem.

FBK: ucmd source /tmp/mtd.sh; flash_erase /dev/mtd${nandrootfs} 0 0

Common command for all protocol

Table 3. Table Common command for all protocol

Command	Description
Done	last command for finish whole flow.
Delay	Busy wait for millisecond
SH/SHELL	run external command
<	stdout as command, such as "< echo ucmd print", which generally used for burn serial number