Debian on HP Thin Client T5335z

Just in case someone run into this: trying to set the box to boot from USB I couldn't permanently set envs from Debian:
After changing mtd1 addresses

vi /etc/fw_env.config 

# MTD device name       Device offset   Env. size       Flash sector size
Number of sectors
#/dev/mtd1              0x0000          0x80000         0x20000 4
/dev/mtd1               0x0000          0x2000          0x1000

I could get correct printout from fw_printenv. But after running fw_setenv, it stopped working ("Cannot read environment, using default. Cannot read default environment from file"). So I managed to permanently set variables from U-boot as follows:

HP>> setenv set_bootargs 'setenv bootargs console=ttyS0,115200 root=LABEL=rootfs rootdelay=10 ${mtdparts} earlyprintk=serial'
HP>> setenv bootcmd_usb 'usb start; ext2load usb 0:1 0x2000000 /boot/uImage; ext2load usb 0:1 0x3000000 /boot/uInitrd'
HP>> setenv bootcmd_exec 'run set_bootargs; run bootcmd_usb; bootm 0x2000000 0x3000000'
HP>> setenv bootcmd 'run bootcmd_exec; run thinpro'
HP>> saveenv
Saving Environment to SPI Flash...
Erasing 0xc0000 - 0xc2000:	[Done]
Writing to SPI flash:		[Done]
Erasing 0xc2000 - 0xc4000:	[Done]
Writing to SPI flash:		[Done]
Erasing 0xc4000 - 0xc6000:	[Done]
Writing to SPI flash:		[Done]

bodhi Wrote:
-------------------------------------------------------
> Serial console pinouts.
>
> Left-to-Right, Inside facing out.
>
> MicroJST header
>
> 1. GND
> 2. RxD
> 3. TxD
> 4. N/A: 3.3V

This is confusing and caused me to have issues! The MicroJST on both of my examples is P4 and has pins 1 and 4 labeled. With front of unit with power facing me the MiroJST header is on the left side of the board with Pin 1 to the back and Pin 4 to the front. Therfore pins are as follows:

1. - 3.3V (not connected with most devices). I'm using μArt (uart-adapter.com) so I have it connected.
2. - RxD on μArt
3. - TxD on μArt
4. - GND on μArt

Uses standard 115200 8N1 that most Marvell SoC based devices use.

Ray

Orientation. We should not be too rely on marking, because it could change from on production lot to the next.

"Left-to-Right, Inside facing out" means "Reading from left to righ, from inside the case facing outward)".

See the picture in this post (the picture orientation is also inside-facing-out):
https://forum.doozan.com/read.php?2,66989,116939#msg-116939

Perhaps your board is from a different production lot.

-bodhi
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bodhi Wrote:
-------------------------------------------------------
> See the picture in this post (the picture
> orientation is also inside-facing-out):
> https://forum.doozan.com/read.php?2,66989,116939#msg-116939
>
> Perhaps your board is from a different production
> lot.

The photo in that post appears to be for a HP t5325 not the t5335z which is very different in appearance. See the photos at https://wikidevi.wi-cat.ru/images/8/8b/HP_t5335z_Top.jpeg showing P4 at the top of the photo which doesn't look similar in any way to photo in that post.

Ray

> The photo in that post appears to be for a HP
> t5325 not the t5335z which is very different in
> appearance. See the photos at
> https://wikidevi.wi-cat.ru/images/8/8b/HP_t5335z_Top.jpeg
> showing P4 at the top of the photo which doesn't
> look similar in any way to photo in that post.

OK when I have a chance, I'll open up the T5335z to verify. It was a long time ago, but I did record that layout in my notes for HP T5335z. It could be that my T5535z and T5325 have the same serial pins layout.

-bodhi
===========================
Forum Wiki
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Edited 1 time(s). Last edit at 12/28/2022 04:07PM by bodhi.