-----Original Message----- From: Tom Rini trini@konsulko.com Sent: Monday, 6 May, 2019 06:59 PM To: Pankaj Bansal pankaj.bansal@nxp.com Cc: u-boot@lists.denx.de; Prabhakar Kushwaha prabhakar.kushwaha@nxp.com; Varun Sethi V.Sethi@nxp.com Subject: [EXT] Re: [ARMv8] kernel entry point
On Mon, May 06, 2019 at 01:06:45PM +0000, Pankaj Bansal wrote:
Hi Tom et. Al,
I am facing an issue while booting linux on our ARMv8 based platform. In our platform DDR address starts from 0x80000000. If I make the linux kernel entry point 0x80080000 in mkimage, then linux boots
fine.
BUT, if I make the linux image entry point as 0x81000000 in mkimage, the
kernel doesn't boot.
=> bootm 0xa0000000 - 0xa1000000 ## Current stack ends at 0xfbb24400 ## Booting kernel from Legacy Image at
a0000000 ...
Image Name: linux Image Type: AArch64 Linux Kernel Image (gzip compressed) Data Size: 9110442 Bytes = 8.7 MiB Load Address: 81000000 Entry Point: 81000000 Verifying Checksum ... OK ## Flattened Device Tree blob at a1000000 Booting using the fdt blob at 0xa1000000 Uncompressing Kernel Image ... OK using: FDT reserving fdt memory region: addr=80000000 size=10000 Loading Device Tree to 000000009fff6000, end 000000009ffff2f8 ... OK ## Transferring control to Linux (at address 81000000)...
Starting kernel ...
I get no kernel logs after this. I am failing to understand why. Can you please help me in debugging this issue?
Why are you using a legacy image on AArch64 at all? You should be using either the kernel Image (and booti) or a FIT image.
This issue is coming even if I use FIT image.
=> bootm 0xa0000000#lx2160ardb ## Current stack ends at 0xfbb24400 ## Loading kernel from FIT Image at a0000000 ... Using 'lx2160ardb' configuration Trying 'kernel' kernel subimage Description: ARM64 Kernel Type: Kernel Image Compression: gzip compressed Data Start: 0xa00000d0 Data Size: 9110442 Bytes = 8.7 MiB Architecture: AArch64 OS: Linux Load Address: 0x81000000 Entry Point: 0x81000000 Hash algo: crc32 Hash value: 39f59891 Verifying Hash Integrity ... crc32+ OK ## Loading ramdisk from FIT Image at a0000000 ... Using 'lx2160ardb' configuration Trying 'initrd' ramdisk subimage Description: initrd for arm64 Type: RAMDisk Image Compression: uncompressed Data Start: 0xa08b055c Data Size: 29171975 Bytes = 27.8 MiB Architecture: AArch64 OS: Linux Load Address: 0x00000000 Entry Point: 0x00000000 Hash algo: crc32 Hash value: 23038325 Verifying Hash Integrity ... crc32+ OK ## Loading fdt from FIT Image at a0000000 ... Using 'lx2160ardb' configuration Trying 'lx2160ardb-dtb' fdt subimage Description: lx2160ardb-dtb Type: Flat Device Tree Compression: uncompressed Data Start: 0xa249071c Data Size: 25337 Bytes = 24.7 KiB Architecture: AArch64 Load Address: 0x90000000 Hash algo: crc32 Hash value: 8e4d595f Verifying Hash Integrity ... crc32+ OK Loading fdt from 0xa249071c to 0x90000000 Booting using the fdt blob at 0x90000000 Uncompressing Kernel Image ... OK using: FDT reserving fdt memory region: addr=80000000 size=10000 Loading Device Tree to 000000009fff6000, end 000000009ffff2f8 ... OK ## Transferring control to Linux (at address 81000000)...
Starting kernel ...
-- Tom