Kernel source is available here: https://github.com/winkapp/wink-hub-kernel-public
(and to close the loop, since I accidentally emailed Fabio without including the list, the console change to /dev/ttyAMA0 was absolutely the problem!)
Thanks again for your help.
Rogan
On Fri, 23 Jun 2023 at 03:25, Fabio Estevam festevam@gmail.com wrote:
Hi Rogan,
On Thu, Jun 22, 2023 at 10:03 PM Fabio Estevam festevam@gmail.com wrote:
Hi Rogan,
On Thu, Jun 22, 2023 at 7:43 PM Fabio Estevam festevam@gmail.com
wrote:
You should also pass the kernel command line: console=ttyAMA0,115200n8
As far as I recall, the 2.6.35 kernel used a different console device.
Yes, 2.6.35 uses ttyAM0. Mainline uses ttyAMA0 (note the extra A).
Please adjust it accordingly.
Also, I validated booting a uImage on a imx28-evk using the same procedure.
I used kernel 6.1.34.
$ grep DTB .config CONFIG_ARM_APPENDED_DTB=y CONFIG_ARM_ATAG_DTB_COMPAT=y CONFIG_ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER=y # CONFIG_ARM_ATAG_DTB_COMPAT_CMDLINE_EXTEND is not set
=> setenv bootargs 'console=ttyAMA0,115200 root=/dev/mmcblk0p3 rw rootwait' => print loadaddr loadaddr=0x42000000 => load mmc 0:2 $loadaddr uImage_with_dtb 5916489 bytes read in 1778 ms (3.2 MiB/s) => bootm ## Booting kernel from Legacy Image at 42000000 ... Image Name: Created: 2023-06-23 1:17:21 UTC Image Type: ARM Linux Kernel Image (uncompressed) Data Size: 5916425 Bytes = 5.6 MiB Load Address: 40008000 Entry Point: 40008000 Verifying Checksum ... OK Loading Kernel Image
Starting kernel ...
[ 0.000000] Booting Linux on physical CPU 0x0 [ 0.000000] Linux version 6.1.34-00030-ga03745a375fa-dirty (fabio@fabio-Precision-3551) (arm-linux-gnueabihf-gcc (Ubuntu 11.3.0-1ubuntu1~22.04.1) 11.3.0, GNU ld (GNU Binutils for Ubuntu) 2.38) #31 Thu Jun 22 22:12:44 -03 2023 [ 0.000000] CPU: ARM926EJ-S [41069265] revision 5 (ARMv5TEJ), cr=0005317f [ 0.000000] CPU: VIVT data cache, VIVT instruction cache [ 0.000000] OF: fdt: Machine model: Freescale i.MX28 Evaluation Kit ...
Most likely the ttyAMA0 change should allow you to boot.
Cheers