Monday, May 19, 2008

loadb worked!

UbootV2 update: Got broken loadb working today. Infact, loadb+go also works(I somehow dont trust it though..)! things remaining:
a) write a reverse of loadb.c which will work on windows and linux.. probably playaround with Dirk's code a bit.. This should give a possible flashing alternative (phase 1).
b) port/customize lm sensor i2c (David Brownell's new arch) to U-Boot V2. (I need this for twl4030/twl5030 access).
c) Hard part: port usbtty to u-boot v2! this is a messy affair.. :( Steve K promized me with some 2430 ref code.. for some unmentionable reasons, I cant look at musb documentation, so gotta trust the code..and make some sane judgements.. keeping my fingers crossed.
d) another hard part: NAND/NOR/OneNAND for SDP, NAND for zoom MDK and Beagle: Sigh... if only NAND was easy to port.. the code rt now in U-Boot V2 is MESSY!!! wishing MTD could be brought over straight..

(Windows COM1 using modified perlscript)

C:\PerlScripts>perl omap_flash.pl -p 1 -s z:\tmp\uboot.binBYTES=28692
file_bytes=14700000 prefix_bytes=020003f0 string
bytes=020003f014700000----Please reset the Board NOW (timeout=30 sec)
----Board Detected

Second file download completed
This exe file was created with the

(on Hyper Terminal)

X-load 343x>
X-load 343x> devinfo
devices:
----uart3
drivers:
serial_ns16550
X-load 343x> help
? - alias for help
devinfo - display info about devices and drivers
false - do nothing, unsuccessfully
go - start application at address 'addr'
help - print online help
loadb - load binary file over serial line (kermit mode)
true - do nothing, successfully
version - print monitor version
X-load 343x> loadb 0x80000000
## Ready for binary (kermit) download to 0x80000000 at 115200 bps...
## Total Size = 0x00007014 = 28692
Bytes
## Start Addr = 0x80000000
X-load 343x> go 0x80000000
## Starting application at 0x80000000 ...
U-Boot 2.0.0-rc5-git (May 19 2008 - 16:46:29)
Board: Texas Instrument's SDP343x
Malloc Space: 0x87ffdc00 -> 0x87fffc00 (size 8 kB)
running /env/bin/init...not found
X-load 343x>


Weird thing 1: hyperterm screws the port up making my script not work - work around, run terraterm once and close, try perl script again.

Wierd thing 2: For some reason terraterm does not allow me to download over kermit.. some goofup that I currently dont have time to figure out.. I think I'd be better off with writing my own app.. something for folks who cannot afford kermit 95..

Patches are due to be send out on May 21st.. Wednesday..

3 comments:

Nishanth Menon said...

#warning ;)
Loadb has changed since the initial proof of concept. Thanks to Dirk pointing me to my own post ;)... U-boot v2 uses a devfs model, hence i had modified loadb to do "loadb -d /dev/ram0" to do kermit to sdram offset 0. just do a "help loadb" to get more details. Further, loadb has a couple of limitations.. in it's current implementation, it is kinda brain dead about devices such as NAND, OneNAND etc.. ideally it should download straight to it.. you just cant have a 128Meg SDRAM, 256Meg NAND and download in chunks to sdram, copy from there to NAND(as the current u-boot v1 does), that'd be plain dumb!.. so i have couple of other patches in the pipeline..which:
a) change the stupid '-d' to '-f'
b) do U-boot v2 file system chunked (4096 byte)buffering before writing to target device.
Hoping to clean it up.. sooon..

Ralph said...

I recently came across your blog and have been reading along. I thought I would leave my first comment. I don't know what to say except that I have enjoyed reading. Nice blog. I will keep visiting this blog very often.


Ruth

http://systemmemory.info

Nishanth Menon said...

Ralph, thanks.. been a few days since I blogged recently.. hoping to get more time..