I am facing similar issue like (AM1808 linux kernel freeze during download) even though it's set to ttyS2.
As the topic was marked as closed I started a new thread. Sorry for the duplication
output from boot
Booting with TI UBL
Device OPP (300MHz, 1.2V)
U-Boot 2009.11 (Mar 25 2010 - 14:39:42)
I2C: ready
DRAM: 64 MB
In: serial
Out: serial
Err: serial
ARM Clock : 300000000 Hz
DDR Clock : 132000000 Hz
Net: Ethernet PHY: GENERIC @ 0x00
Hit any key to stop autoboot: 0
BOOTP broadcast 1
DHCP client bound to address 192.168.0.11
Using device
TFTP from server 192.168.0.12; our IP address is 192.168.0.11
Filename 'uImage'.
Load address: 0xc0700000
Loading: #################################################################
#################################################################
#################################################################
#################################################################
#################################################################
#################################################################
######################################
done
Bytes transferred = 2187532 (21610c hex)
## Booting kernel from Legacy Image at c0700000 ...
Image Name: Arago/2.6.32+2.6.33-rc4-psp03.20
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 2187468 Bytes = 2.1 MB
Load Address: c0008000
Entry Point: c0008000
Verifying Checksum ... OK
Loading Kernel Image ... OK
OK
Starting kernel ...
Uncompressing Linux... done, booting the kernel. (Stuck Here)
Bootargs:
bootargs=console=ttyS2,115200n8 rw noinitrd mem=64M@0xc4000000 root=/dev/nfs nfsroot=192.168.0.12:/home/thanasis/tools/am18x/ti-sdk-am180x-evm-4.0.1.0/targep..
minicom setup script output from sitara-linuxsdk-sdg-04.01.00.00.pdf
Hit any key to stop autobo
0
U-Boot >setenv bootdelay
4
U-Boot >setenv baudrate
115200
## Switch baudrate to 115200 bps and press ENTER ...U-Boot
>setenv oldbootargs
${bootargs}
U-Boot
>ip=dhcp
U-Boot >setenv autoload
no
U-Boot >setenv oldserverip
${serverip}
U-Boot >setenv serverip
192.168.0.12
U-Boot >setenv bootfile
uImage
U-Boot >setenv oldbootcmd
${bootcmd}
U-Boot >setenv bootcmd 'dhcp;setenv serverip
192.168.0.12;tftpboot;bootm'
U-Boot
>saveenv
Saving Environment to SPI
Flash...
Erasing SPI flash...Writing to SPI
flash...done
U-Boot >
script
timeout 300
verbose on
expect {
"stop autoboot:"
}
send ""
expect {
" >"
}
send "setenv bootdelay 4"
expect {
" >"
}
send "setenv baudrate 115200"
expect {
"ENTER ..."
}
send ""
expect {
" >"
}
send "setenv oldbootargs $\{bootargs\}"
expect {
" >"
}
send "setenv bootargs console=ttyS2,115200n8 rw noinitrd \c"
send " mem=64M@0xc4000000 \c"
send "root=/dev/nfs nfsroot=\c"
send "192.168.0.12:\c"
send "/home/thanasis/tools/am18x/ti-sdk-am180x-evm-4.0.1.0/targetNFS\c"
send ",nolock,rsize=1024,wsize=1024 \c"
send "ip=dhcp"
expect {
" >"
}
send "setenv autoload no"
expect {
" >"
}
send "setenv oldserverip $\{serverip\}"
expect {
" >"
}
send "setenv serverip 192.168.0.12"
expect {
" >"
}
send "setenv bootfile uImage"
expect {
" >"
}
send "setenv oldbootcmd $\{bootcmd\}"
expect {
" >"
}
send "setenv bootcmd 'dhcp;setenv serverip 192.168.0.12;tftpboot;bootm'"
expect {
" >"
}
send "saveenv"
expect {
" >"
}
! killall -s SIGHUP minicom
Regards,
Sakis