How to get Marvell prompt?

[Jericho46]

So frustrated. I can not get the boot-up sequence to stop and show the Marvell >> prompt. I've tried hundreds of reboots. I know it's supposedly "soon" after applying power, but the data flys by, doesn't stop when hitting the space bar at the prompt, and often overwrites the data before it can be read.

Model#2100, Mac M1 using Terminal, -U command (UTF-8) applied, correct USB address, etc,

My request, if Netgate is listening, is to please come up with a more usable script sequence. "When prompted, press any key to stop the autoboot process" in the manual seems like a cruel joke.

[Gertjan]

@Jericho46 said in How to get Marvell prompt?:

and often overwrites the data before it can be read.

Consider using a more flexible solution like Putty or some other terminal (SSH) whatever software that permits you to log to a file, so, even when you can't interrupt the data text stream, you can analyze it afterwards.

Maybe Mac terminate can do this also.

And yes, you probably should be able to to interrupt the boot process. I don't have a 2100, I use a 4100 myself, and can do this.
It could be 'any key' or a specific key like the space bar (I'm not sure).
If the BIOS doesn't receive == recognizes this (specific ?) key, it just continues.

"When prompted, press any key to stop the autoboot process"

Aha, so it's any key.
As you know, a serial connections are 3 wires : a ground, a transmit and a receive.
If one of them is disconnected, let's say the transmit (from the MAC point of view) then you see the BIOS boot text, but the BIOS never 'sees' the key you've typed.
So no joke, but a broken path.

Or read this : https://forum.netgate.com/topic/187597/cp210x-usb-to-uart-driver-for-mac-sonoma as it matches somewhat what you are seeing.

[stephenw10]

It waits for 3 seconds and shows a countdown:

TIM-1.0
WTMI-devel-1.0.0-1115f12
WTMI: system early-init
SVC REV: 5, CPU VDD voltage: 1.237V
NOTICE:  Booting Trusted Firmware
NOTICE:  BL1: v1.5(release):ROGUE2-01.00.00.01-cpu1_2G-0-g06b570a8d (Marvell-release-1.3.0)
NOTICE:  BL1: Built : 14:34:11, Feb  7 2020
NOTICE:  BL1: Booting BL2
NOTICE:  BL2: v1.5(release):ROGUE2-01.00.00.01-cpu1_2G-0-g06b570a8d (Marvell-release-1.3.0)
NOTICE:  BL2: Built : 14:34:13, Feb  7 2020
NOTICE:  BL1: Booting BL31
NOTICE:  BL31: v1.5(release):ROGUE2-01.00.00.01-cpu1_2G-0-g06b570a8d (Marvell-release-1.3.0)
NOTICE:  BL31: Built : 14

U-Boot 2018.03-devel-1.2.0ROGUE2-01.00.00.02+ (Feb 07 2020 - 14:33:22 -0500)

Model: Silicom Rogue-2
       CPU     1200 [MHz]
       L2      800 [MHz]
       TClock  200 [MHz]
       DDR     750 [MHz]
DRAM:  3.4 GiB
Comphy chip #0:
Comphy-0: SGMII1        3.125 Gbps
Comphy-1: PEX0          2.5 Gbps  
Comphy-2: SATA0         6 Gbps    
PCIE-0: Link down
MMC:   sdhci@d8000: 0
Loading Environment from SPI Flash... mvebu_spi_ofdata_to_platdata: ofdata clock 200000000, frequency 20000000
SF: Detected w25q32bv with page size 256 Bytes, erase size 4 KiB, total 4 MiB
OK
Model: Silicom Rogue-2
Net:   eth0: neta@30000, eth1: neta@40000 [PRIME]
Hit any key to stop autoboot:  0 
Marvell>> 

Pressing space (or any key) should stop the boot. If it doesn't then perhaps your terminal setup is not sending it correctly.

Steve