Linux/AM3354: Kernel boot issue

In 3.14 kernel, i am *not providing this value anywhere Still it is booting.

Sorry for the typo error

The software team have been notified. They will respond here.

Hi Madhu,

Could you attach the kernel defconfig file which you are using for kernel 4.9 and boot log in a text file?
Also post the steps used for building the kernel and device tree.

BR
Tsvetolin Shulev

arch=arm
baudrate=115200
board=custom_board_name
board_name=custom_board_name
boot_fdt=try
bootcmd=run mmcboot;setenv mmcdev 1; setenv bootpart 1:2; run mmcboot;run nandboot;
bootcount=1
bootdelay=1
bootdir=/boot
bootenv=uEnv.txt
bootfile=zImage
bootpart=0:2
console=none
cpu=armv7
dfu_alt_info_emmc=rawemmc mmc 0 3751936
dfu_alt_info_mmc=boot part 0 1;rootfs part 0 2;MLO fat 0 1;MLO.raw mmc 100 100;u-boot.img.raw mmc 300 400;spl-os-args.raw mmc 80 80;spl-os-image.raw mmc 900 2000;spl-os-args fat 0 1;spl-os-image fat 0 1;u1
dfu_alt_info_ram=kernel ram 0x80200000 0xD80000;fdt ram 0x80F80000 0x80000;ramdisk ram 0x81000000 0x4000000
ethact=cpsw
ethaddr=d0:ff:50:0b:c7:51
fdt_high=0xffffffff
fdtaddr=0x80F80000
fdtfile=custom_board.dtb
importbootenv=echo Importing environment from mmc ...; env import -t $loadaddr $filesize
loadaddr=0x80200000
loadbootenv=load mmc ${mmcdev} ${loadaddr} ${bootenv}
loadfdt=load mmc ${bootpart} ${fdtaddr} ${bootdir}/${fdtfile}
loadimage=load mmc ${bootpart} ${loadaddr} ${bootdir}/${bootfile}
loadramdisk=load mmc ${mmcdev} ${rdaddr} ramdisk.gz
loadsplash=mmc dev 0; if mmc rescan; then load mmc 0:${splashpart} ${splashimage} ${splashfile}; else mmc dev 1; if mmc rescan; then load mmc 1:${splashpart} ${splashimage} ${splashfile}; fi; fi;
mmcargs=setenv bootargs console=${console} ${optargs} root=${mmcroot} rootfstype=${mmcrootfstype}
mmcboot=mmc dev ${mmcdev}; if mmc rescan; then echo SD/MMC found on device ${mmcdev};if run loadbootenv; then echo Loaded environment from ${bootenv};run importbootenv;fi;if test -n $uenvcmd; then echo Ru;
mmcdev=0
mmcloados=run mmcargs; if test ${boot_fdt} = yes || test ${boot_fdt} = try; then if run loadfdt; then bootz ${loadaddr} - ${fdtaddr}; else if test ${boot_fdt} = try; then bootz; else echo WARN: Cannot loa;
mmcroot=/dev/mmcblk0p2 ro
mmcrootfstype=ext4 rootwait
netargs=setenv bootargs console=${console} ${optargs} root=/dev/nfs nfsroot=${serverip}:${rootpath},${nfsopts} rw ip=dhcp
netboot=echo Booting from network ...; setenv autoload no; dhcp; tftp ${loadaddr} ${bootfile}; tftp ${fdtaddr} ${fdtfile}; run netargs; bootz ${loadaddr} - ${fdtaddr}
nfsopts=nolock
optargs=vt.global_cursor_default=0
ramargs=setenv bootargs console=${console} ${optargs} root=${ramroot} rootfstype=${ramrootfstype}
ramroot=/dev/ram0 rw ramdisk_size=65536 initrd=${rdaddr},64M
ramrootfstype=ext2
rdaddr=0x81000000
rootpath=/export/rootfs
soc=am33xx
spiargs=setenv bootargs console=${console} ${optargs} root=${spiroot} rootfstype=${spirootfstype}
spibusno=0
spiimgsize=0x362000
spiroot=/dev/mtdblock4 rw
spirootfstype=jffs2
spisrcaddr=0xe0000
splashfile=/boot/splash.bmp.gz
splashimage=0x82000000
splashpart=2
static_ip=${ipaddr}:${serverip}:${gatewayip}:${netmask}:${hostname}::off
usbnet_devaddr=d0:ff:50:0b:c7:51
vendor=vendor_name
ver=U-Boot 2014.01-rc2 (Oct 23 2017 - 19:02:59)omap2plus_defconfig.doc

Thanks for your quick response.

Please find the attached defconfig file and uboot args

I am using omap2plus_defconfig from arch/arm/config directory

Steps i followed to built kernel:

make ARCH=arm CROSS_COMPILE=<sdk_path>/linux-devkit/sysroots/x86_64-arago-linux/usr/bin/arm-linux-gnueabihf- distclean
make ARCH=arm CROSS_COMPILE=<sdk_path>/linux-devkit/sysroots/x86_64-arago-linux/usr/bin/arm-linux-gnueabihf- omap2plus_defconfig
make ARCH=arm CROSS_COMPILE=<sdk_path>/linux-devkit/sysroots/x86_64-arago-linux/usr/bin/arm-linux-gnueabihf- zImage dtbs
i included my custom.dts file under arch/arm/boot/dts.

I compared the 3.14 kernel and 4.9 kernel(both released by TI). under linux/arch/arm/mach-omap2/ directory, cpuidle33xx.c is present in 3.14 kernel and the same file is missing in 4.9 kernel.

I took the 3.14 kernel from kernel.org website, compiled for my custom board. It is not booting. By comparing ti's 3.14 kernel and mainline(kernel.org) 3.14 kernel, found that cpuidle33xx.c is missing in mainline(kernel.org) 3.14 kernel.

Will this make any difference..?
Sorry if im wrong, im new to porting linux for custom board. Kindly suggest.

Yes, i tried unset fdt_high.. but still the issue is same

Then why am I seeing this fdt_high=0xffffffff? "unrecognized/unsupported machine ID" error comes from a piece of boot code that is never reached, if the device tree is found and used.

U-Boot# print
arch=arm
baudrate=115200
board=custom_name
board_name=custom_name
boot_fdt=try
bootcmd=run mmcboot;setenv mmcdev 1; setenv bootpart 1:2; run mmcboot;run nandboot;
bootcount=1
bootdelay=1
bootdir=/boot
bootenv=uEnv.txt
bootfile=zImage
bootpart=0:2
console=none
cpu=armv7
dfu_alt_info_emmc=rawemmc mmc 0 3751936
dfu_alt_info_mmc=boot part 0 1;rootfs part 0 2;MLO fat 0 1;MLO.raw mmc 100 100;u-boot.img.raw mmc 300 400;spl-os-args.raw mmc 80 80;spl-os-image.raw mmc 900 2000;spl-os-args fat 0 1;spl-os-image fat 0 1;u1
dfu_alt_info_ram=kernel ram 0x80200000 0xD80000;fdt ram 0x80F80000 0x80000;ramdisk ram 0x81000000 0x4000000
ethact=cpsw
ethaddr=d0:ff:50:0b:c7:51
fdtaddr=0x80F80000
fdtfile=htouch.dtb
importbootenv=echo Importing environment from mmc ...; env import -t $loadaddr $filesize
loadaddr=0x80200000
loadbootenv=load mmc ${mmcdev} ${loadaddr} ${bootenv}
loadfdt=load mmc ${bootpart} ${fdtaddr} ${bootdir}/${fdtfile}
loadimage=load mmc ${bootpart} ${loadaddr} ${bootdir}/${bootfile}
loadramdisk=load mmc ${mmcdev} ${rdaddr} ramdisk.gz
loadsplash=mmc dev 0; if mmc rescan; then load mmc 0:${splashpart} ${splashimage} ${splashfile}; else mmc dev 1; if mmc rescan; then load mmc 1:${splashpart} ${splashimage} ${splashfile}; fi; fi;
mmcargs=setenv bootargs console=${console} ${optargs} root=${mmcroot} rootfstype=${mmcrootfstype}
mmcboot=mmc dev ${mmcdev}; if mmc rescan; then echo SD/MMC found on device ${mmcdev};if run loadbootenv; then echo Loaded environment from ${bootenv};run importbootenv;fi;if test -n $uenvcmd; then echo Ru;
mmcdev=0
mmcloados=run mmcargs; if test ${boot_fdt} = yes || test ${boot_fdt} = try; then if run loadfdt; then bootz ${loadaddr} - ${fdtaddr}; else if test ${boot_fdt} = try; then bootz; else echo WARN: Cannot loa;
mmcroot=/dev/mmcblk0p2 ro
mmcrootfstype=ext4 rootwait
netargs=setenv bootargs console=${console} ${optargs} root=/dev/nfs nfsroot=${serverip}:${rootpath},${nfsopts} rw ip=dhcp
netboot=echo Booting from network ...; setenv autoload no; dhcp; tftp ${loadaddr} ${bootfile}; tftp ${fdtaddr} ${fdtfile}; run netargs; bootz ${loadaddr} - ${fdtaddr}
nfsopts=nolock
optargs=vt.global_cursor_default=0
ramargs=setenv bootargs console=${console} ${optargs} root=${ramroot} rootfstype=${ramrootfstype}
ramroot=/dev/ram0 rw ramdisk_size=65536 initrd=${rdaddr},64M
ramrootfstype=ext2
rdaddr=0x81000000
rootpath=/export/rootfs
soc=am33xx
spiargs=setenv bootargs console=${console} ${optargs} root=${spiroot} rootfstype=${spirootfstype}
spibusno=0
spiimgsize=0x362000
spiroot=/dev/mtdblock4 rw
spirootfstype=jffs2
spisrcaddr=0xe0000
splashfile=/boot/splash.bmp.gz
splashimage=0x82000000
splashpart=2
static_ip=${ipaddr}:${serverip}:${gatewayip}:${netmask}:${hostname}::off
usbnet_devaddr=d0:ff:50:0b:c7:51
vendor=custom_board
ver=U-Boot 2014.01-rc2 (Dec 11 2017 - 15:47:26)

uboot log after unset fdt_high

3919176 bytes read in 369 ms (10.1 MiB/s)
40558 bytes read in 29 ms (1.3 MiB/s)
Kernel image @ 0x80200000 [ 0x000000 - 0x3bcd48 ]
## Flattened Device Tree blob at 80f80000
Booting using the fdt blob at 0x80f80000
Loading Device Tree to 9f32c000, end 9f338e6d ... OK

Starting kernel ...

It's not showing anything after...starting kernel

but 3.14 kernel with custom.dtb is booting. 3.14 is booting with am335x-evm.dtb and am335x-boneblack.dtb.

Please don't misunderstand, i tried with console= ttyS0,115200n8. but i does't boot. so i kept console= none. Now i tried with console = ttyO0. Its booting now

Thank you..

Since 3.14 kernel is working with console=none.I kept console =none..