I'm trying to build a linux kernel and DTB (containing custom IP hw configuration). I was aleady able to set up fsbl and the dts with vivado and vitis. I also build u-boot and so far this part seems to works. Now I want to use buildroot to build a kernel from linux-xlnx. I used xilinx_zynq_defconfig to create the .config file for buildroot an build it, then I create an image with kernel, dtb and rootfs using the following its (FIT) file:
/dts-v1/;/ { description = "Simple image with single Linux kernel"; images { kernel-1 { description = "Linux kernel"; data = /incbin/("./zImage.gz"); type = "kernel"; arch = "arm"; os = "linux"; compression = "gzip"; load = <0x8000>; entry = <0x8000>; hash-1 { algo = "sha1"; }; }; fdt-1 { description = "Device Tree blob"; data = /incbin/("./kernel.dtb"); type = "flat_dt"; arch = "arm"; compression = "none"; hash-1 { algo = "sha1"; }; }; ramdisk-1 { description = "petalinux-image-minimal"; data = /incbin/("./rootfs.cpio"); type = "ramdisk"; arch = "ARM"; os = "linux"; compression = "none"; hash { algo = "sha256"; }; }; }; configurations { default = "config-1"; config-1 { description = "Boot Linux kernel"; kernel = "kernel-1"; fdt = "fdt-1"; ramdisk = "ramdisk-1"; hash-1 { algo = "sha1"; }; }; };}; u-boot loads the itb file form SD card and starts the kernel which runs into a kernel panic:
U-Boot 2020.01 (Dec 29 2021 - 11:49:08 +0100) CPU: Zynq 7z010 Silicon: v3.1 DRAM: ECC disabled 1 GiB Flash: 0 Bytes NAND: 0 MiB MMC: mmc@e0100000: 0 Loading Environment from SPI Flash... SF: Detected s25fl128s with page size 256 Bytes, erase size 64 KiB, total 16 MiB *** Warning - bad CRC, using default environment In: serial@e0001000 Out: serial@e0001000 Err: serial@e0001000 Net: ZYNQ GEM: e000b000, mdio bus e000b000, phyaddr -1, interface rgmii-id Warning: ethernet@e000b000 (eth0) using random MAC address - 72:da:85:32:49:f9 eth0: ethernet@e000b000 Hit any key to stop autoboot: 0 Copying Linux from SDCard to RAM... 13309917 bytes read in 1130 ms (11.2 MiB/s) Loading kernel from FIT Image at 03000000 ... Using 'config-1' configuration Verifying Hash Integrity ... OK Trying 'kernel-1' kernel subimage Description: Linux kernel Type: Kernel Image Compression: gzip compressed Data Start: 0x030000c8 Data Size: 4182451 Bytes = 4 MiB Architecture: ARM OS: Linux Load Address: 0x00008000 Entry Point: 0x00008000 Hash algo: sha1 Hash value: 4a503e5aa2d56ace0fe0084206c222f1a5707b83 Verifying Hash Integrity ... sha1+ OK Loading ramdisk from FIT Image at 03000000 ... Using 'config-1' configuration Verifying Hash Integrity ... OK Trying 'ramdisk-1' ramdisk subimage Description: petalinux-image-minimal Type: RAMDisk Image Compression: uncompressed Data Start: 0x0340028c Data Size: 9113600 Bytes = 8.7 MiB Architecture: ARM OS: Linux Load Address: unavailable Entry Point: unavailable Hash algo: sha256 Hash value: 9305eec29a98a21cec5f5b7717b9be8e88cc898242df616289acfdbf10cf3c94 Verifying Hash Integrity ... sha256+ OK Loading fdt from FIT Image at 03000000 ... Using 'config-1' configuration Verifying Hash Integrity ... OK Trying 'fdt-1' fdt subimage Description: Device Tree blob Type: Flat Device Tree Compression: uncompressed Data Start: 0x033fd368 Data Size: 11874 Bytes = 11.6 KiB Architecture: ARM Hash algo: sha1 Hash value: fbd24a6bd4bcc30bc443ecf7edfdb13ba70c26ab Verifying Hash Integrity ... sha1+ OK Booting using the fdt blob at 0x33fd368 Uncompressing Kernel Image Loading Ramdisk to 3e259000, end 3eb0a000 ... OK Loading Device Tree to 3e253000, end 3e258e61 ... OK Starting kernel ... Booting Linux on physical CPU 0x0 Linux version 5.4.0-xilinx (martin@ubuntu) (gcc version 10.3.0 (Buildroot 2021.11-575-gcf494c78c1)) #16 SMP PREEMPT Wed Dec 29 20:22:29 CET 2021 CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache OF: fdt: Machine model: xlnx,zynq-7000 earlycon: cdns0 at MMIO 0xe0001000 (options '115200n8') printk: bootconsole [cdns0] enabled Memory policy: Data cache writealloc cma: Reserved 16 MiB at 0x3f000000 8<--- cut here --- Unable to handle kernel paging request at virtual address fe253000 pgd = (ptrval) [fe253000] *pgd=00000000 Internal error: Oops - BUG: 5 [#1] PREEMPT SMP ARM Modules linked in: CPU: 0 PID: 0 Comm: swapper Not tainted 5.4.0-xilinx #16 Hardware name: Xilinx Zynq Platform PC is at fdt32_ld+0x0/0xc LR is at fdt_check_header+0x10/0x144 pc : [<c0677ca4>] lr : [<c0677d6c>] psr: a00000d3 sp : c0a01f20 ip : 00a5237f fp : c0a104cc r10: c085c5a8 r9 : c091f758 r8 : 00000000 r7 : fe253000 r6 : c0a4bbcc r5 : c0a0823c r4 : c091f758 r3 : fe253000 r2 : d00dfeed r1 : 00000000 r0 : fe253000 Flags: NzCv IRQs off FIQs off Mode SVC_32 ISA ARM Segment none Control: 18c5387d Table: 0000404a DAC: 00000051 Process swapper (pid: 0, stack limit = 0x(ptrval)) Stack: (0xc0a01f20 to 0xc0a02000) 1f20: c091f758 c0a0823c c0a4bbcc c0537628 c091f758 c0a0823c c0a06e40 c0a310c0 1f40: c0a40c90 efffeec0 c085c5a8 c09208a4 00000000 0000000c c092d398 c090418c 1f60: ffffffff 18c5387d c0a30f40 00000000 00000000 00000001 413fc090 18c5387d 1f80: 00000000 c0154e88 c07f3e2d 00000000 00000001 c0900330 c0a30f40 c0a03c40 1fa0: 00000000 00000001 413fc090 18c5387d 00000000 c090095c 00000000 00000000 1fc0: 00000000 00000000 00000000 c092fa40 00000000 00000000 00000000 c0900330 1fe0: 00000051 10c0387d 00000000 3e253000 413fc090 00000000 00000000 00000000 [<c0677ca4>] (fdt32_ld) from [<c0677d6c>] (fdt_check_header+0x10/0x144) [<c0677d6c>] (fdt_check_header) from [<c0537628>] (__unflatten_device_tree+0x28/0xfc) [<c0537628>] (__unflatten_device_tree) from [<c09208a4>] (unflatten_device_tree+0x24/0x40) [<c09208a4>] (unflatten_device_tree) from [<c090418c>] (setup_arch+0x64c/0xa9c) [<c090418c>] (setup_arch) from [<c090095c>] (start_kernel+0x58/0x41c) [<c090095c>] (start_kernel) from [<00000000>] (0x0) Code: ebf217db e28dd014 e49df004 c0677b9c (e5900000) random: get_random_bytes called from init_oops_id+0x24/0x48 with crng_init=0 ---[ end trace 0000000000000000 ]--- Kernel panic - not syncing: Attempted to kill the idle task! ---[ end Kernel panic - not syncing: Attempted to kill the idle task! ]---Any ideas what is going wrong here? Any help would be highly appreciated.