Boot Problem:FEC: Link is down 7949

[vishvapathi]

finished compiling LTIB on Ubuntu 12.04. Copied bootloader, uImage and rootfs files in sdcard as per the LTIB document. When i power ON the EVB connecting via serial port getting below problem.

U-Boot 2009.08 (Jun 19 2013 - 15:09:12)
CPU: Freescale i.MX6 family TO1.2 at 792 MHz
Thermal sensor with ratio = 189

Temperature:   33 C, calibration data 0x5ac4de7d

mx6q pll1: 792MHz
mx6q pll2: 528MHz
mx6q pll3: 480MHz
mx6q pll8: 50MHz
ipg clock	: 66000000Hz

ipg per clock : 66000000Hz

uart clock	: 80000000Hz
cspi clock	: 60000000Hz
ahb clock	: 132000000Hz
axi clock   : 264000000Hz
emi_slow clock: 132000000Hz
ddr clock	: 528000000Hz
usdhc1 clock  : 198000000Hz
usdhc2 clock  : 198000000Hz
usdhc3 clock  : 198000000Hz
usdhc4 clock  : 198000000Hz
nfc clock	: 24000000Hz
Board: i.MX6Q-SABRESD: unknown-board Board: 0x63012 [POR ]
Boot Device: SD
I2C:   ready
DRAM:   1 GB
MMC:   FSL_USDHC: 0,FSL_USDHC: 1,FSL_USDHC: 2,FSL_USDHC: 3
*** Warning - bad CRC or MMC, using default environment
In:	serial
Out:   serial
Err:   serial
Found PFUZE100! deviceid=10,revid=11
Net:   got MAC address from IIM: 00:04:9f:02:6c:a6
FEC0 [PRIME]
Hit any key to stop autoboot:  0
PHY indentify @ 0x1 = 0x004dd074
FEC: Link is down 7949
Using FEC0 device
TFTP from server 192.168.1.101; our IP address is 192.168.1.103
Filename 'uImage'.
Load address: 0x10800000
Loading: FEC: Link is down 7949
FEC: Link is down 7949
FEC: Link is down 7949
FEC: Link is down 7949 The above line is repeating continuously.... Did i do any mistake while compiling or copying it to SD card??

[gurumoorthirasi]

your log saying that it is looking for the kernel image through network so change the ip to none and set the environmental variable to sdcard.then this will work.refer their Linux_user guide.pdf.

[vishvapathi]

Hi Guru,

  I tried to  Hit any key to stop auto-boot but not getting any response for any key press, its starting to display Link is down 7949 repeatedly.

When i insert the android SD card which came along it works fine. I dont think booting from SD is the problem, plz correct me if i am wrong...

[weidong_sun]

hello,Vishvapathi,

    Please use print command on u-boot command line to show u-boot environment , then paste them here. let us check them.

     It seems that settings is configured as booting from tftp and NFS. If it is like this, we should adjust environment or set up tftp and nfs on linux host.

Regards,

Weidong

[vishvapathi]

Hi Weidong,

    I am not getting the Uboot command line. the console starts printing FEC: Linik is Down 7949 continuously. I tried to  Hit any key to stop auto-boot but not getting any response for any key press, its starting to display Link is down 7949 repeatedly. When i insert the android SD card which came along it works fine

[weidong_sun]

Hello,Vishvapathi,

      Please check the header file for your board, it should be in u-boot/include/configs/, Mine is mx6solo_sabresd.h, I can't confirm your file's name. find it and open it, then search "CONFIG_EXTRA_SETTINGS", all default environments parameters are defined here, so paste them here. Let me see .

     Then we modify default environment and continue to test !

Regards,

Weidong

[vishvapathi]

Hi,

#define    CONFIG_EXTRA_ENV_SETTINGS                    \

        "netdev=eth0\0"                        \

        "ethprime=FEC0\0"                    \

        "uboot=u-boot.bin\0"            \

        "kernel=uImage\0"                \

        "nfsroot=/opt/eldk/arm\0"                \

        "bootargs_base=setenv bootargs console=ttymxc0,115200\0"\

        "bootargs_nfs=setenv bootargs ${bootargs} root=/dev/nfs "\

            "ip=dhcp nfsroot=${serverip}:${nfsroot},v3,tcp\0"\

        "bootcmd_net=run bootargs_base bootargs_nfs; "        \

            "tftpboot ${loadaddr} ${kernel}; bootm\0"    \

        "bootargs_mmc=setenv bootargs ${bootargs} ip=dhcp "     \

            "root=/dev/mmcblk0p1 rootwait\0"                \

        "bootcmd_mmc=run bootargs_base bootargs_mmc; "   \

        "mmc dev 3; "    \

        "mmc read ${loadaddr} 0x800 0x2000; bootm\0"    \

        "bootcmd=run bootcmd_net\0"                             \

[weidong_sun · Accepted solution]

Hello,Vishvapathi

       Please modify last sentence: bootcmd=run bootcmd_net .

        Change it to "bootcmd=run bootcmd_mmc"

save and exit, and re-complie u-boot. continue to test !

Regards,

weidong

[vishvapathi]

Hi,

Thanks for your help. But now i am getting kernal image error. I loaded the uImage as per the document.

Board: i.MX6Q-SABRESD: unknown-board Board: 0x63012 [POR]
Boot Device: SD
I2C:   ready
DRAM:   1 GB
MMC:   FSL_USDHC: 0,FSL_USDHC: 1,FSL_USDHC: 2,FSL_USDHC: 3
*** Warning - bad CRC or MMC, using default environment
In:	serial
Out:   serial
Err:   serial
Found PFUZE100! deviceid=10,revid=11
Net:   got MAC address from IIM: 00:04:9f:02:6c:a6
FEC0 [PRIME]
Hit any key to stop autoboot:  0
mmc3(part 0) is current device
MMC read: dev # 3, block # 2048, count 8192 ... 8192 blocks read: OK
Wrong Image Format for bootm command
ERROR: can't get kernel image!

MX6Q SABRESD U-Boot >

[vishvapathi]

And i am not able to type anything on the command line...

[vishvapathi]

still facing the kernel image problems after doing the env settings as per the document.

U-Boot 2009.08 (Jun 20 2013 - 15:29:29)
CPU: Freescale i.MX6 family TO1.2 at 792 MHz
Thermal sensor with ratio = 189
Temperature:   45 C, calibration data 0x5ac4de7d
mx6q pll1: 792MHz
mx6q pll2: 528MHz
mx6q pll3: 480MHz
mx6q pll8: 50MHz
ipg clock	: 66000000Hz
ipg per clock : 66000000Hz
uart clock	: 80000000Hz
cspi clock	: 60000000Hz
ahb clock	: 132000000Hz
axi clock   : 264000000Hz
emi_slow clock: 132000000Hz
ddr clock	: 528000000Hz
usdhc1 clock  : 198000000Hz
usdhc2 clock  : 198000000Hz
usdhc3 clock  : 198000000Hz
usdhc4 clock  : 198000000Hz
nfc clock	: 24000000Hz
Board: i.MX6Q-SABRESD: unknown-board Board: 0x63012 [POR ]
Boot Device: SD
I2C:   ready
DRAM:   1 GB
MMC:   FSL_USDHC: 0,FSL_USDHC: 1,FSL_USDHC: 2,FSL_USDHC: 3
In:	serial
Out:   serial
Err:   serial
Found PFUZE100! deviceid=10,revid=11
Net:   got MAC address from IIM: 00:04:9f:02:6c:a6
FEC0 [PRIME]
Hit any key to stop autoboot:  0
mmc - MMC sub system
Usage:
mmc read addr blk# cnt
mmc write addr blk# cnt
mmc erase blk# cnt
mmc rescan
mmc part - lists available partition on current mmc device
mmc dev [dev] [part] - show or set current mmc device [partition]
mmc bootpart [dev] [part] - show or set boot partition
mmc list - lists available devices

MMC read: dev # 0, block # 2048, count 8192 ... Card did not respond to voltage!

MMC: block number 0x2800 exceeds max(0x0)
0 blocks read: ERROR
Wrong Image Format for bootm command
ERROR: can't get kernel image!
MX6Q SABRESD U-Boot > printenv
bootdelay=3
baudrate=115200
ipaddr=192.168.1.103
serverip=192.168.1.101
netmask=255.255.255.0
rd_loadaddr=(0x1300000)
netdev=eth0
ethprime=FEC0
uboot=u-boot.bin
kernel=uImage
nfsroot=/opt/eldk/arm

bootargs_nfs=setenv bootargs ${bootargs} root=/dev/nfs ip=dhcp nfsroot=${serverp

bootcmd_net=run bootargs_base bootargs_nfs; tftpboot ${loadaddr} ${kernel}; boom

bootargs_mmc=setenv bootargs ${bootargs} ip=dhcp root=/dev/mmcblk0p1 rootwait  

ethact=FEC0
bootfile=uImage
loadaddr=0x10800000
bootargs_base=setenv bootargs console=ttymxc3,115200

bootcmd_mmc=run bootargs_base bootargs_mmc;mmc dev2;mmc read ${loadaddr} 0x800 m

bootcmd=run bootcmd_mmc
stdin=serial
stdout=serial
stderr=serial
bootargs=console=ttymxc3,115200 ip=dhcp root=/dev/mmcblk0p1 rootwait

Environment size: 785/8188 bytes 

[weidong_sun]

Hello,Vishvapathi,

      It seems that u-boot didn't read linux kernel . please try to adjust environment:

u-boot > setenv bootargs_mmc 'run bootargs_base bootargs_mmc;mmc dev2;mmc read ${loadaddr} 0x800 0x2000;bootm'

u-boot > save

-----------------------------------------------

<note: please notice which eMMC port you are using mmc dev2 means uSDHC3 port. If errors still exist, you can modify dev number>

Regards,

Weidong

[vishvapathi]

Hi Weidong,

If i modify dev no also getting same error.. below are the commands i issued to set env

setenv loadaddr 0x10800000

setenv bootargs_base 'setenv bootargs console=ttymxc3,115200'

setenv bootargs_mmc 'setenv bootargs ${bootargs} root=/dev/mmcblk0p1 rootwait rw

setenv bootcmd_mmc 'run bootargs_base bootargs_mmc;mmc dev1;mmc read ${loadaddr} 0x800 0x2000;bootm'

setenv bootcmd 'run bootcmd_mmc'

saveenv

run bootcmd

for my mmcinfo command below is the response

mmcinfo

Card did not respond to voltage select!

Device: FSL_USDHC

Manufacturer ID: 0

OEM: 0

Name: Tran Speed: 0

Rd Block Len: 0

MMC version 0.0

Clock: 400000

High Capacity: No

Capacity: 0 Bytes

Bus Width: 1-bit

Current Partition for boot: Not bootable

i burned images to SD card as per the instruction in i.MX 6Dual/6Quad SABRE-AI Linux User's Guide

I am a newbie, plz correct me if i am wrong.

Thanks in advance

[gurumoorthirasi]

"bootcmd=run bootcmd_net\0"

\

the above line in code change _net replace with _mmc .

"bootargs_mmc=setenv bootargs ${bootargs} ip=dhcp "

\

"root=/dev/mmcblk0p1 rootwait\0"

the above line change the ip=none.