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| 16:57.12 | obiwahn | hi i am pretty new to arm development and got a soc8200 dev board. the device boots from images located on the first (vfat) partition of the sdcard. and i have changed the ramdisk.gz so that rcS calls some scripts on the 2nd partiton (ext2) and starts some services that are inside a chroot on that partition as well. |
| 16:58.46 | obiwahn | i think what i am doing is horrible do you think there is some way so that the system that is on the nand-rom boots some kind of real linux that is directly on the sdcard but not is some stupid image files? |
| 17:25.16 | obiwahn | most importatnt for me would be know if is houdl aim to replace the software that came with the board |
| 17:25.58 | obiwahn | or if i should stick to chroot. |
| 17:26.24 | wmat | obiwahn: I don't know that board, but I'd suspect you can replace whatever you want to |
| 17:26.41 | wmat | obiwahn: did googling find any soc8200 sites? |
| 17:27.29 | obiwahn | wmat the documentation is not so good and there semms to be only one chinese guy giving support |
| 17:27.41 | wmat | obiwahn: is that the embest board? |
| 17:27.55 | obiwahn | my irc is a bit laggy because i pull the kernel |
| 17:28.26 | obiwahn | http://www.armkits.com/product/soc8200.asp jepp |
| 17:29.36 | obiwahn | wmat if it is possible id like to do the full boot form an sdcard levaing something like an bootlaoder in the nand if that is possible |
| 17:30.02 | obiwahn | and get rid of the vfat partiton |
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| 17:30.23 | obiwahn | sadly it is not documented at all |
| 17:30.57 | obiwahn | if i understand it right i can boot form nand or sdcard |
| 17:31.35 | obiwahn | either way i have to used some compressed image of my operating system |
| 17:32.20 | obiwahn | wmat: do you have any hints for me? |
| 17:32.32 | obiwahn | like some buzz-word i should google for |
| 17:32.41 | wmat | obiwahn: you have to set a jumper to boot from sdcard |
| 17:32.51 | obiwahn | i did that |
| 17:33.00 | wmat | ah |
| 17:33.16 | obiwahn | then it reads the ramdisk.gz etc from the sdcard |
| 17:33.20 | obiwahn | oh |
| 17:34.03 | obiwahn | maybe i do not need the fat partition but can boot from some arbitrary fs? |
| 17:34.48 | wmat | not sure, sorry |
| 17:35.38 | obiwahn | i fear that the board is looking for uimage and frinds on the sdcard |
| 17:35.49 | obiwahn | ah wait:) |
| 17:39.24 | wmat | you can tell uboot to look for whatever you want using setenv |
| 17:39.32 | obiwahn | to make the ... |
| 17:39.33 | obiwahn | yes |
| 17:39.41 | obiwahn | that was what i was going to tell about |
| 17:39.52 | obiwahn | i have just opened the user guide |
| 17:40.00 | wmat | ah |
| 17:40.16 | obiwahn | setenv bootargs 'mmc init |
| 17:40.23 | obiwahn | but they are strange commands |
| 17:40.27 | obiwahn | not documented |
| 17:41.50 | obiwahn | at the end it is e saveenv; boot |
| 17:42.07 | obiwahn | bootargs is the kernel commandline? |
| 17:42.48 | obiwahn | i think i have to cahnge the following line: |
| 17:44.07 | obiwahn | setenv bootcmd 'mmc init\; fatload mmc 0 3030000 uImage\; faltload mmc 0 81600000 ramdisk.gz\; boot 0x8030000' |
| 17:47.14 | obiwahn | http://processors.wiki.ti.com/index.php/OMAP35x_DVEVM_Boot_from_SD/MMC_card i found this |
| 17:47.40 | obiwahn | but id really liek to boot form and uncompressed ext2/3 partition:) |
| 18:00.33 | obiwahn | wmat: still there? |
| 18:01.30 | wmat | yes, just busy |
| 18:01.40 | obiwahn | ah ok:) |
| 18:01.48 | wmat | sorry |
| 18:02.39 | obiwahn | wmat: here it is kind of late - ill go to the gym and then to bed. i would be happy if you drop later a line or 2:) |
| 18:03.15 | wmat | i'm in EDT timezone fwiw |
| 18:07.01 | obiwahn | CET here so you are 5 hours behind:) |
| 18:14.18 | obiwahn | http://omappedia.org/wiki/Embedded_MMC%28eMMC%29_boot --mh |
| 18:16.18 | obiwahn | that worries me a bit |
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