On Tuesday, December 17, 2019 at 4:50:17 PM UTC-6, Siva Subrahmanyam wrote:
>
> I am trying to bring up BBB with yocto. fallowed this document
> https://bootlin.com/doc/training/yocto/yocto-labs.pdf
>
> to generate images and load these to SD card.
>
> u-boot was unable to load kernel with data abort error. With same SD Card
> everything was working fine with beaglebone green board.
>
> U-Boot SPL 2018.01-gefdd6cd5ab (Dec 09 2019 - 15:02:18)
> Trying to boot from MMC1
> reading u-boot.img
> reading u-boot.img
>
>
> U-Boot 2018.01-gefdd6cd5ab (Dec 09 2019 - 15:02:18 +0000)
>
> CPU : AM335X-GP rev 2.1
> I2C: ready
> DRAM: 512 MiB
> No match for driver 'omap_hsmmc'
> No match for driver 'omap_hsmmc'
> Some drivers were not found
> MMC: OMAP SD/MMC: 0, OMAP SD/MMC: 1
> Net: cpsw, usb_ether
> Press SPACE to abort autoboot in 2 seconds
> reading zImage
> data abort
> pc : [<9ff6672c>] lr : [<9ff4e9f9>]
> reloc pc : [<8081972c>] lr : [<808019f9>]
> sp : 9df2cb40 ip : 00000000 fp : 00000ab2
> r10: 00000200 r9 : 9df2ced8 r8 : 08020000
> r7 : 00000200 r6 : 00000020 r5 : 003d0200 r4 : 48060000
> r3 : 08020200 r2 : 13105a4d r1 : 00200000 r0 : 00000001
> Flags: Nzcv IRQs off FIQs on Mode SVC_32
> Resetting CPU ...
>
> resetting ...
>
> U-Boot SPL 2018.01-gefdd6cd5ab (Dec 09 2019 - 15:02:18)
> Trying to boot from MMC1
> reading u-boot.img
> reading u-boot.img
>
> Added uEnv.txt file with below commands.
> bootdir=/boot
> bootfile=zImage
> console=ttyO0,115200n8
> fdtaddr=0x88000000
>
This dtb is not on your sdcard, might want to change it to what you listed
below.
Just for reference, I'm using jumpnow how to and meta and BBB boots and
works.
fdtfile=bbb-4dcape70t.dtb
> loadaddr=0x82000000
> mmcroot=/dev/mmcblk0p2 ro
> mmcrootfstype=ext4 rootwait
> optargs=consoleblank=0
> nohdmi=bbb-nohdmi.dtb
> mmcargs=setenv bootargs console=${console} ${optargs} root=${mmcroot}
> rootfstype=${mmcrootfstype}
> findfdtfile=if test -e mmc ${bootpart} ${bootdir}/nohdmi; then setenv
> fdtfile ${nohdmi}; fi;
> loadfdt=run findfdtfile; load mmc ${bootpart} ${fdtaddr}
> ${bootdir}/${fdtfile}
> loadimage=load mmc ${bootpart} ${loadaddr} ${bootdir}/${bootfile}
> uenvcmd=if run loadfdt; then echo Loaded ${fdtfile}; if run loadimage;
> then run mmcargs; bootz ${loadaddr} - ${fdtaddr}; fi; fi;
>
> here is the snapshot of boot partition and rootfs/boot/ on sd card.
> am335x-boneblack.dtb MLO u-boot.img uEnv.txt uEnv.txt~ zImage
>
>
--
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