Tool/software: Linux
Hi,
I copied a u-boot.img from the sd card come with my am335x Starter kit and load to the SK through UART. Since there is no uEnv.txt the board load default enviornment. It can go to U-BBOT# stage and I can type some command, but after a little while, the U-BOOT# is not accessible, and minicom starts to print "CCCC". The following is what I get. Can somebody tell me what cause the U-BOOT# stopped running?
U-Boot SPL 2016.05-g4db46a6bbd (Mar 29 2017 - 17:44:45)
Trying to boot from UART
CLoaded 232592 bytes
U-Boot 2011.09 (Jul 26 2012 - 17:13:38)
I2C: ready
DRAM: 256 MiB
WARNING: Caches not enabled
No daughter card present
NAND: HW ECC Hamming Code selected
No NAND device found!!!
0 MiB
MMC: OMAP SD/MMC: 0, OMAP SD/MMC: 1
*** Warning - readenv() failed, using default environment
Net: cpsw
Hit any key to stop autoboot: 0
Card did not respond to voltage select!
Booting from nand ...
HW ECC BCH8 Selected
no devices available
Wrong Image Format for bootm command
ERROR: can't get kernel image!
U-Boot# printenv
autoload=yes
baudrate=115200
bootargs=console=ttyO0,115200n8 root=ubi0:rootfs rw ubi.mtd=7,2048 noinitrd root
fstype=ubifs rootwait=1 ip=none
bootargs_defaults=setenv bootargs console=${console} ${optargs}
bootcmd=if mmc rescan; then echo SD/MMC found on device ${mmc_dev};if run loadbo
otenv; then echo Loaded environment from ${bootenv};run importbootenv;fi;if test
-n $uenvcmd; then echo Running uenvcmd ...;run uenvcmd;fi;if run mmc_load_uimag
e; then run mmc_args;bootm ${kloadaddr};fi;fi;run nand_boot;
bootdelay=3
bootenv=uEnv.txt
bootfile=uImage
console=ttyO0,115200n8
ethact=cpsw
ethaddr=bc:6a:29:53:85:7a
importbootenv=echo Importing environment from mmc ...; env import -t $loadaddr $
filesize
ip_method=none
kloadaddr=0x80007fc0
loadaddr=0x82000000
loadbootenv=fatload mmc ${mmc_dev} ${loadaddr} ${bootenv}
mmc_args=run bootargs_defaults;setenv bootargs ${bootargs} root=${mmc_root} root
fstype=${mmc_root_fs_type} ip=${ip_method}
mmc_boot=run mmc_args; run mmc_load_uimage; bootm ${kloadaddr}
mmc_dev=0
mmc_load_uimage=fatload mmc ${mmc_dev} ${kloadaddr} ${bootfile}
mmc_root=/dev/mmcblk0p2 rw
mmc_root_fs_type=ext3 rootwait
nand_args=run bootargs_defaults;setenv bootargs ${bootargs} root=${nand_root} no
initrd rootfstype=${nand_root_fs_type} ip=${ip_method}
nand_boot=echo Booting from nand ...; run nand_args; nandecc hw 2; nand read.i $
{kloadaddr} ${nand_src_addr} ${nand_img_siz}; bootm ${kloadaddr}
nand_img_siz=0x500000
nand_root=ubi0:rootfs rw ubi.mtd=7,2048
nand_root_fs_type=ubifs rootwait=1
nand_src_addr=0x280000
net_args=run bootargs_defaults;setenv bootargs ${bootargs} root=/dev/nfs nfsroot
=${serverip}:${rootpath},${nfsopts} rw ip=dhcp
net_boot=echo Booting from network ...; setenv autoload no; dhcp; tftp ${kloadad
dr} ${bootfile}; run net_args; bootm ${kloadaddr}
nfsopts=nolock
nor_args=run bootargs_defaults;setenv bootargs ${bootargs} root={nor_root} rootf
stype=${nor_root_fs_type} ip=${ip_method}
nor_boot=echo Booting from NOR ...; run nor_args; cp.b ${0x08080000} ${kloadaddr
} ${nor_img_siz}; bootm ${kloadaddr}
nor_img_siz=0x280000
nor_root=/dev/mtdblock3 rw
nor_root_fs_type=jffs2
nor_src_addr=0x08080000
rootpath=/export/rootfs
script_addr=0x81900000
spi_args=run bootargs_defaults;setenv bootargs ${bootargs} root=${spi_root} root
fstype=${spi_root_fs_type} ip=${ip_method}
spi_boot=echo Booting from spi ...; run spi_args; sf probe ${spi_bus_no}:0; sf r
ead ${kloadaddr} ${spi_src_addr} ${spi_img_siz}; bootm ${kloadaddr}
spi_bus_no=0
spi_img_siz=0x380000
spi_root=/dev/mtdblock4 rw
spi_root_fs_type=jffs2
spi_src_addr=0x62000
static_ip=${ipaddr}:${serverip}:${gatewayip}:${netmask}:${hostname}::off
stderr=serial
stdin=serial
stdout=serial
Environment size: 2777/8188 bytes
