Boot loader flashing in NAND

Hi Lofna, 

Are you using an evaluation module or is this on a custom board? You also mentioned that you have used SPI flash for your design and had it working, did you use this serial flash utility to flash those images? 

One comment about how you are currently running the utility is that you do not have the AM1808 specificed as the 'targetType', please add this option when you invoke the serial flash utility.

>sfh_OMAP-L138.exe -erase -flashType NAND -targetType AM1808

If you are using a custom board, you will also want to check if the NAND device you are using is supported by the ROM bootloader (RBL). You can find this information at the following link. 

List of NAND devices supported by TI RBL: 

http://processors.wiki.ti.com/index.php/List_of_NANDs_devices_supported_by_TI_RBLs#OMAPL138.2FC6748.2FC6746.2FC6742.2FAM18xx 

Let us know if this resolves your issue or if you have any further questions.

Thanks,

Clinton

Hi Clinton,

I am not using EVM, it is customized board and we have followed the schematics from logicPD which have given across EVM.

I used the command what you have suggested and got the below response with the same serial utility which I used the same to SPI before.

I am using NAND flash is from Micron which is MT29F2G08ABAEA is 128MB. Please find attached snapshots and let us know.

When the attached messages comes immediately my power ic got powered off and struck at the below messages.

 Please let us any suggestions.

Thanks,

Lofna

Hi,

Now our NAND flash it seems working after run CCS tests under JATG.

Now I want to flash and run my Kernel uImage & rootfs from my NAND flash using AM1808.

It seems in my u-boot there is no nand related commands to flash the images to NAND flash.

Any uboot modification or any updated supported NAND uboot available in AM1808.

Booting with TI UBL
Device OPP (300MHz, 1.2V)

U-Boot 2010.12 (Jul 13 2013 - 13:26:32)

I2C: ready
DRAM: 128 MiB
MMC: davinci: 0
SF: Detected M25P64 with page size 256, total 8 MiB
*** Warning - bad CRC, using default environment

In: serial
Out: serial
Err: serial
ARM Clock : 300000000 Hz
DDR Clock : 132000000 Hz
SF: Detected M25P64 with page size 256, total 8 MiB
Invalid MAC address read.
Net: No ETH PHY detected!!!
Error: Ethernet init failed!
Board Net Initialization Failed
DaVinci-EMAC
Hit any key to stop autoboot: 0
U-Boot >
U-Boot > help
? - alias for 'help'
askenv - get environment variables from stdin
base - print or set address offset
bdinfo - print Board Info structure
boot - boot default, i.e., run 'bootcmd'
bootd - boot default, i.e., run 'bootcmd'
bootm - boot application image from memory
bootp - boot image via network using BOOTP/TFTP protocol
cmp - memory compare
coninfo - print console devices and information
cp - memory copy
crc32 - checksum calculation
dhcp - boot image via network using DHCP/TFTP protocol
echo - echo args to console
editenv - edit environment variable
env - environment handling commands
exit - exit script
ext2load- load binary file from a Ext2 filesystem
ext2ls - list files in a directory (default /)
false - do nothing, unsuccessfully
fatinfo - print information about filesystem
fatload - load binary file from a dos filesystem
fatls - list files in a directory (default /)
go - start application at address 'addr'
help - print command description/usage
iminfo - print header information for application image
imxtract- extract a part of a multi-image
itest - return true/false on integer compare
loadb - load binary file over serial line (kermit mode)
loads - load S-Record file over serial line
loady - load binary file over serial line (ymodem mode)
loop - infinite loop on address range
md - memory display
mdc - memory display cyclic
mii - MII utility commands
mm - memory modify (auto-incrementing address)
mmc - MMC sub system
mmcinfo - display MMC info
mtest - simple RAM read/write test
mw - memory write (fill)
mwc - memory write cyclic
nfs - boot image via network using NFS protocol
nm - memory modify (constant address)
ping - send ICMP ECHO_REQUEST to network host
printenv- print environment variables
reset - Perform RESET of the CPU
run - run commands in an environment variable
saveenv - save environment variables to persistent storage
saves - save S-Record file over serial line
setenv - set environment variables
sf - SPI flash sub-system
showvar - print local hushshell variables
sleep - delay execution for some time
source - run script from memory
sspi - SPI utility command
test - minimal test like /bin/sh
tftpboot- boot image via network using TFTP protocol
true - do nothing, successfully
version - print monitor version
U-Boot >

There is a way to load another process which you can burn your kernel  image via serial tera term using kermit with the below command:

Please need your suggestions...

Thanks,

Lofna

Hi lofna, 

including the commands in u-boot is possible by including the flags in Make file in top directory of u-boot. 

make sure the first stage u-boot doesn't exceed the size of IRAM specified in architecture documents. It seems , from the commands that are shown, the u-boot is built for sd, not for nand. so, one need to make sure to get the min.nand or u-boot.bin for nand support, which can be done from Make file of PSP's Top Directory. 

Murali Krishna Dama, 

dama.murali@gmail.com

murali.krishna@gmail.com