The Linux kernal cannot boot after I changed the mem. Why？

Hi Feihu,

Could you dive more details about the issue? What is the physical volume of the RAM. Could you post the boot params which realize successful boot? What about the board is it some standard development board like Beagleboard or EVM or using some custom board?

BR

Tsvetolin Shulev

Hi Tsvetolin,

I used the development board with 256MB DDR SDRAM and 512MB NAND Flash, which is  detailed in 

http://www.embest-tech.com/shop/product/sbc8530-dm3730-single-board-computer.html.

When I successfully boot  from SD card, the boot parameters are as follows:

OMAP3 SBC8100_PLUS # printenv
bootcmd=if mmc init; then if run loadbootscript; then run bootscript; else if run loaduimage; then if run loadramdisk; then run mmcboot; else echo faile to load ramdisk.gz; fi; else run nandboot; fi; fi; else run nandboot; fi
bootdelay=3
baudrate=115200
ethaddr=aa:bb:cc:dd:ee:ff
ipaddr=192.192.192.200
serverip=192.192.192.90
gatewayip=192.192.192.101
netmask=255.255.255.0
loadaddr=0x80300000
rdaddr=0x81000000
usbtty=cdc_acm
console=ttyS2,115200n8
vram=12M
dvimode=640x480MR-16@60
defaultdisplay=lcd
mmcroot=/dev/ram0 rw ramdisk_size=65536 initrd=0x81000000,64M
mmcrootfstype=ext2
nandroot=ubi0:rootfs
nandrootfstype=ubifs
mmcargs=setenv bootargs console=${console} mpurate=${mpurate} vram=${vram} omapdss.def_disp=${defaultdisplay} omapfb.mode=dvi:${dvimode} root=${mmcroot} rootfstype=${mmcrootfstype}
nandargs=setenv bootargs console=${console} mpurate=${mpurate} vram=${vram} omapdss.def_disp=${defaultdisplay} omapfb.mode=dvi:${dvimode} ubi.mtd=4 root=${nandroot} rootfstype=${nandrootfstype} init=/init androidboot.console=ttyS2
loadbootscript=fatload mmc 0 ${loadaddr} boot.scr
bootscript=echo Running bootscript from mmc ...; source ${loadaddr}
loaduimage=fatload mmc 0 ${loadaddr} uImage
loadramdisk=fatload mmc 0 ${rdaddr} ramdisk.gz
mmcboot=echo Booting from mmc ...; run mmcargs; bootm ${loadaddr}
nandboot=echo Booting from nand ...; run nandargs; nand read ${loadaddr} 280000 400000; bootm ${loadaddr}
updatesys=nand erase;mmc init; fatload mmc 0 80300000 x-load.bin.ift_for_NAND;nandecc hw;nand write.i 80300000 0 ${filesize}; fatload mmc 0 80300000 flash-uboot.bin;nandecc sw;nand write.i 80300000 80000 ${filesize}; fatload mmc 0 80300000 uImage;nandecc sw;nand write.i 80300000 280000 ${filesize}; fatload mmc 0 81000000 ubi.img;nandecc sw;nand write.i 81000000 680000 ${filesize};led flash all
stdin=serial
stdout=serial
stderr=serial
mpurate=1000
dieid#=520200029e380000014e604506023029
ethact=dm9000

Environment size: 1925/131068 bytes

Probably, i think  my problem should be caused by inappropriate params configuration. But what should i do next?

BR