Try changing the ttyO2 to ttyS2. On Monday, November 7, 2016 at 8:14:34 AM UTC-6, mkstart wrote: > > First of all, I am new in this field, > I am trying to boot linux on Beagle Board Rev. C3 with no success. Steps I > took for booting is taken from this wiki > https://eewiki.net/display/linuxonarm/BeagleBoard . It is created by > Robert Nelson. I can see that U-Boot is started and trying to start Linux > kernel, but as control is passed to kernel I stop getting output. It looked > like low-level debug is not configured for OMAP3. I tried to recompile and > configure kernel. In menuconfig I select Kernel hacking ---> Kernel > low-level debugging functions ---> Kernel low-level debugging port and I > select "Kernel low-level debugging messages via OMAP3 UART3". I also select > Early printk(I am not sure if I need this). After compiling I have no > progress. I also connect monitor via hdmi and I see yellow screen only. > > Could you please give me some idea? > > This is my output: > U-Boot 2016.09-dirty (Nov 02 2016 - 12:23:39 +0100) > > OMAP3530-GP ES3.0, CPU-OPP2, L3-165MHz, Max CPU Clock 600 MHz > OMAP3 Beagle board + LPDDR/NAND > I2C: ready > DRAM: 256 MiB > NAND: 256 MiB > MMC: OMAP SD/MMC: 0 > *** Warning - bad CRC, using default environment > > Beagle Rev C1/C2/C3 > Timed out in wait_for_event: status=1000 > Check if pads/pull-ups of bus are properly configured > No EEPROM on expansion board > Timed out in wait_for_bb: status=1000 > No EEPROM on expansion board > OMAP die ID: 3d00000300000000040323090b01e00a > Net: usb_ether > Error: usb_ether address not set. > > Hit any key to stop autoboot: 0 > switch to partitions #0, OK > mmc0 is current device > SD/MMC found on device 0 > Checking for: /uEnv.txt ... > Checking for: /boot/uEnv.txt ... > 23 bytes read in 11 ms (2 KiB/s) > Loaded environment from /boot/uEnv.txt > Checking if uname_r is set in /boot/uEnv.txt... > Running uname_boot ... > loading /boot/vmlinuz-4.7.8-armv7-x3 ... > 6089504 bytes read in 543 ms (10.7 MiB/s) > loading /boot/dtbs/4.7.8-armv7-x3/omap3-beagle.dtb ... > 109840 bytes read in 277 ms (386.7 KiB/s) > debug: [console=ttyO2,115200n8 root=/dev/mmcblk0p2 ro rootfstype=ext4 > rootwait musb_hdrc.fifo_mode=5] ... > debug: [bootz 0x82000000 - 0x88000000] ... > ## Flattened Device Tree blob at 88000000 > Booting using the fdt blob at 0x88000000 > Loading Device Tree to 8ffe2000, end 8ffffd0f ... OK > > Starting kernel ... > > >
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