Hello,
I am working on an embedded project with the u-boot and Minnowboard max. With compressed kernel (bzImage) everything works fine, I want to check the performance with uncompressed kernel (vmlinux).
So for creating the image.fit file I followed the instructions as per the file x86-fit-boot.txt except that I have changed the compression to none in the image.its file since I want to check the uncompressed Kernel
data = /incbin/("./vmlinux.bin"); type = "kernel"; arch = "x86"; os = "linux"; compression = "none";
The bootcmd is "bootcmd=fatload mmc 1:1 0x02000000 image.fit ; bootm 0x02000000". Now I am seeing that the start up hangs after printing the commands starting kernel ... and the time summary. Do you have any idea why it is happening?
reading imagefit 14566018 bytes read in 317 ms (43.8 MiB/s) ## Loading kernel from FIT Image at 02000000 ... Using 'config@1' configuration Verifying Hash Integrity ... OK Trying 'kernel@1' kernel subimage Description: Vanilla Linux kernel Created: 2016-06-23 14:22:21 UTC Type: Kernel Image Compression: uncompressed Data Start: 0x020000e8 Data Size: 14548992 Bytes = 13.9 MiB Architecture: Intel x86 OS: Linux Load Address: 0x01000000 Entry Point: 0x00000000 Hash algo: sha1 Hash value: 5a0bddcbf1f54ac989fff662fc43fb5fc801ebbc Verifying Hash Integrity ... sha1+ OK ## Loading setup from FIT Image at 02000000 ... Using 'config@1' configuration Trying 'setup@1' setup subimage Description: Linux setup.bin Created: 2016-06-23 14:22:21 UTC Type: x86 setup.bin Compression: uncompressed Data Start: 0x02de01d0 Data Size: 15708 Bytes = 15.3 KiB Hash algo: sha1 Hash value: 08ffa163d054b9b0f5b11d4b3db2a16247cee395 Verifying Hash Integrity ... sha1+ OK Loading setup from 0x02de01d0 to 0x00090000 Loading Kernel Image ... OK Setup at 0x090000 Magic signature found Kernel command line: "quiet"
Starting kernel ...
I have seen in the document that it doesn't support for 64 bit kernel and the document link given is now not accessible. http://wiki.osdev.org/64-bit_Higher_Half_Kernel_with_GRUB_2
Mit Freundlichen Grüßen VinothKumar +49 1798909072