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
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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