I have booted kernel 3.8 but not able to boot kernel 4.4.
uEnv.txt
*console=ttyS0,115200n8*
*netargs=setenv bootargs console=ttyO0,115200n8 root=/dev/mmcblk0p2 ro
rootfstype=ext4 rootwait debug earlyprintk mem=256M*
*netboot=echo Booting from Network ...; setenv autoload no ; load mmc 0:1
${loadaddr} uImage ; load mmc 0:1 ${fdtaddr} am335x-boneblack.dtb ; run
netargs ; bootm ${loadaddr} - ${fdtaddr}*
with these, I am able to boot kernel 3.8
Now I am using same uboot.img and uEnv.txt and just replacing dtb and
uImage for 4.4
Kernel 4.4 taken from here
uenvcmd=run netboothttps://github.com/beagleboard/linux
uboot logs
*U-Boot SPL 2016.07 (Jul 19 2016 - 00:02:40)*
*Trying to boot from MMC1*
*MMC partition switch failed*
**** Warning - MMC partition switch failed, using default environment*
*reading u-boot.img*
*reading u-boot.img*
*U-Boot 2016.07 (Jul 19 2016 - 00:02:40 +0530)*
* Watchdog enabled*
*I2C: ready*
*DRAM: 512 MiB*
*MMC: OMAP SD/MMC: 0, OMAP SD/MMC: 1*
**** Warning - bad CRC, using default environment*
*Net: <ethaddr> not set. Validating first E-fuse MAC*
*cpsw, usb_ether*
*Press SPACE to abort autoboot in 2 seconds*
*switch to partitions #0, OK*
*mmc0 is current device*
*Scanning mmc 0:1...*
*switch to partitions #0, OK*
*mmc0 is current device*
*SD/MMC found on device 0*
*switch to partitions #0, OK*
*mmc0 is current device*
*SD/MMC found on device 0*
*reading boot.scr*
*** Unable to read file boot.scr ***
*reading uEnv.txt*
*351 bytes read in 3 ms (114.3 KiB/s)*
*Loaded env from uEnv.txt*
*Importing environment from mmc0 ...*
*Running uenvcmd ...*
*Booting from Network ...*
*reading uImage*
*8715288 bytes read in 493 ms (16.9 MiB/s)*
*reading am335x-boneblack.dtb*
*56891 bytes read in 9 ms (6 MiB/s)*
*## Booting kernel from Legacy Image at 82000000 ...*
* Image Name: Linux-4.4.90*
* Created: 2017-10-07 15:26:28 UTC*
* Image Type: ARM Linux Kernel Image (uncompressed)*
* Data Size: 8715224 Bytes = 8.3 MiB*
* Load Address: 80008000*
* Entry Point: 80008000*
* Verifying Checksum ... OK*
*## Flattened Device Tree blob at 88000000*
* Booting using the fdt blob at 0x88000000*
* Loading Kernel Image ... OK*
* Loading Device Tree to 8ffef000, end 8ffffe3a ... OK*
*Starting kernel ...*
I am booting with SD card.
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