Greetings everyone,
I’m new to Linux and experimenting on BeagleBone Black. I’ve built MLO, uboot, Linux kernel and now I’m working on initrd.
I followed http://www.ibm.com/developerworks/linux/library/l-initrd/index.html to build the initrd. what I’m trying to do here is, I want the initrd to be my final file system.
But when I booted the BBB from u-boot using tftp, I’m getting kernel panic. I presume the problem is with bootargs. Can anyone guide me where I’m going wrong? Here is bootlog.
U-Boot 2015.10-dirty (Mar 27 2016 - 21:12:33 +0530)
Watchdog enabled
I2C: ready
DRAM: 512 MiB
MMC: OMAP SD/MMC: 0, OMAP SD/MMC: 1
Net: cpsw, usb_ether
Hit any key to stop autoboot: 0
=> pri
arch=arm
args_mmc=run finduuid;setenv bootargs console=${console} ${optargs} root=PARTUUID=${uuid} rw rootfstype=${mmcrootfstype}
baudrate=115200
board=am335x
board_name=A335BNLT
board_rev=00C0
boot_fdt=try
bootargs=console=ttyO0,115200n8 mem=512M root=/dev/ram0 rw initrd=0x82000000,4MB ramdisk_size=4096
bootcmd=tftp 82000000 uImage;tftp 83000000 am335x-boneblack.dtb;bootm 82000000 - 83000000
bootcount=1
bootdelay=5
bootdir=/boot
bootenv=uEnv.txt
bootfile=zImage
bootm_size=0x10000000
bootpart=1:2
bootscript=echo Running bootscript from mmc${mmcdev} …; source ${loadaddr}
console=ttyO0,115200n8
cpu=armv7
dfu_alt_info_emmc=rawemmc raw 0 3751936
dfu_alt_info_mmc=boot part 0 1;rootfs part 0 2;MLO fat 0 1;MLO.raw raw 0x100 0x100;u-boot.img.raw raw 0x300 0x400;spl-os-args.raw raw 0x80
0x80;spl-os-image.raw raw 0x900 0x2000;spl-os-args fat 0 1;spl-os-image fat 0 1;u-boot.img fat 0 1;uEnv.txt fat 0 1
dfu_alt_info_ram=kernel ram 0x80200000 0xD80000;fdt ram 0x80F80000 0x80000;ramdisk ram 0x81000000 0x4000000
eth1addr=6c:ec:eb:ad:77:82
ethact=cpsw
ethaddr=6c:ec:eb:ad:77:80
fdt_addr_r=0x88000000
fdtaddr=0x88000000
fdtfile=am335x-boneblack.dtb
fileaddr=82000000
filesize=4c33e1
findfdt=if test $board_name = A335BONE; then setenv fdtfile am335x-bone.dtb; fi; if test $board_name = A335BNLT; then setenv fdtfile am335x
-boneblack.dtb; fi; if test $board_name = A33515BB; then setenv fdtfile am335x-evm.dtb; fi; if test $board_name = A335X_SK; then setenv fdt
file am335x-evmsk.dtb; fi; if test $fdtfile = undefined; then echo WARNING: Could not determine device tree to use; fi;
finduuid=part uuid mmc 0:2 uuid
importbootenv=echo Importing environment from mmc …; env import -t -r $loadaddr $filesize
ipadd=192.168.1.10
ipaddr=192.168.1.10
kernel_addr_r=0x82000000
loadaddr=0x82000000
loadbootenv=load mmc ${mmcdev} ${loadaddr} ${bootenv}
loadbootscript=load mmc ${mmcdev} ${loadaddr} boot.scr
loadfdt=load mmc ${bootpart} ${fdtaddr} ${bootdir}/${fdtfile}
loadimage=load mmc ${bootpart} ${loadaddr} ${bootdir}/${bootfile}
loadramdisk=load mmc ${mmcdev} ${rdaddr} ramdisk.gz
mmcboot=mmc dev ${mmcdev}; if mmc rescan; then echo SD/MMC found on device ${mmcdev};if run loadbootscript; then run bootscript;else if run
loadbootenv; then echo Loaded environment from ${bootenv};run importbootenv;fi;if test -n $uenvcmd; then echo Running uenvcmd …;run uenv
cmd;fi;if run loadimage; then run mmcloados;fi;fi ;fi;
mmcdev=1
mmcloados=run args_mmc; if test ${boot_fdt} = yes || test ${boot_fdt} = try; then if run loadfdt; then bootz ${loadaddr} - ${fdtaddr}; else
if test ${boot_fdt} = try; then bootz; else echo WARN: Cannot load the DT; fi; fi; else bootz; fi;
mmcrootfstype=ext4 rootwait
netargs=setenv bootargs console=${console} ${optargs} root=/dev/nfs nfsroot=${serverip}:${rootpath},${nfsopts} rw ip=dhcp
netboot=echo Booting from network …; setenv autoload no; dhcp; run netloadimage; run netloadfdt; run netargs; bootz ${loadaddr} - ${fdtad
dr}
netloadfdt=tftp ${fdtaddr} ${fdtfile}
netloadimage=tftp ${loadaddr} ${bootfile}
nfsopts=nolock
partitions=uuid_disk=${uuid_gpt_disk};name=rootfs,start=2MiB,size=-,uuid=${uuid_gpt_rootfs}
ramargs=setenv bootargs console=${console} ${optargs} root=${ramroot} rootfstype=${ramrootfstype}
ramboot=echo Booting from ramdisk …; run ramargs; bootz ${loadaddr} ${rdaddr} ${fdtaddr}
ramdisk_addr_r=0x88080000
ramroot=/dev/ram0 rw
ramrootfstype=ext2
rdaddr=0x88080000
rootpath=/export/rootfs
serverip=192.168.1.5
soc=am33xx
spiargs=setenv bootargs console=${console} ${optargs} root=${spiroot} rootfstype=${spirootfstype}
spiboot=echo Booting from spi …; run spiargs; sf probe ${spibusno}:0; sf read ${loadaddr} ${spisrcaddr} ${spiimgsize}; bootz ${loadaddr}
spibusno=0
spiimgsize=0x362000
spiroot=/dev/mtdblock4 rw
spirootfstype=jffs2
spisrcaddr=0xe0000
static_ip=${ipaddr}:${serverip}:${gatewayip}:${netmask}:${hostname}::off
stderr=serial_omap
stdin=serial_omap
stdout=serial_omap
usbnet_devaddr=6c:ec:eb:ad:77:82
vendor=ti
ver=U-Boot 2015.10-dirty (Mar 27 2016 - 21:12:33 +0530)
Environment size: 4182/131068 bytes
=> tftpboot 81000000 uImage
link up on port 0, speed 100, full duplex
Using cpsw device
TFTP from server 192.168.1.5; our IP address is 192.168.1.10
Filename ‘uImage’.
Load address: 0x81000000
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