[U-Boot] bootelf and 64 bit elf application

[George Robinson]

I would like to know an answer to that problem, too.
Is the hello.world.bin an ELF file ?  What does objdump say ?

Also, the entry address is not the same as the load address, so maybe 
there is something to do with that...

George


On 2018-08-01 21:06, Siddharth Tuli wrote:
> Hi,
> 
> I am trying to use bootelf to load a 64-bit elf binary, but it appears
> to fail. I tried using the hello_world from U-Boot sources as well.
> My U-Boot is based 2015.01 and I have patches applied for 64elf
> support, and compiled as a 64 bit U-Boot.  Any idea what is need to
> support bootelf for 64-bit?
> 
> <snip>
> # file hello_world.bin
> hello_world.bin: ELF 64-bit LSB executable, version 1 (SYSV),
> statically linked, not stripped
> 
> uboot#  tftp 0x80300000 tsiddharth/hello_world.bin
> *****ethHw_checkPortSpeed setting speed: 5
> Using bcmiproc_eth-0 device
> TFTP from server 10.204.96.200; our IP address is 10.216.67.182;
> sending through gateway 10.216.79.254
> Filename 'tsiddharth/hello_world.bin'.
> Load address: 0x80300000
> Loading: #####
>          889.6 KiB/s
> done
> Bytes transferred = 68336 (10af0 hex)
> uboot# bootelf -p 0x80300000 <=== I looked at cmd/elf.c and I see that
> bootelf calls load_elf64_img_phdr() only with “-p” option.
> Loading phdr 0 to 0x000000000c100000 (794 bytes)
> Loading phdr 1 to 0x0000000000000000 (0 bytes)
> ## Starting application at 0x0c100000 ...
> "Synchronous Abort" handler, esr 0x86000210
> ELR:     c100000
> LR:      fff4197c
> x0 : 0000000000000002 x1 : 00000000feb3f058
> x2 : 0000000000000020 x3 : 0000000000000001
> x4 : 0000000000000020 x5 : 00000000015087ba
> x6 : 00000000ffffffd0 x7 : 0000000000000004
> x8 : 0000000000000063 x9 : 000000007af38000
> x10: 00000000feaf7678 x11: 00000000fff8c000
> x12: 000000000000000f x13: 00000000fffa18c1
> x14: 00000000fff99186 x15: 00000000fff99180
> x16: 00000000fffa18c1 x17: 00000000fff99175
> x18: 00000000feaf7e30 x19: 000000000c100000
> x20: 0000000000000000 x21: 00000000feb3f058
> x22: 0000000000000002 x23: 0000000000000002
> x24: 0000000000000000 x25: 00000000fff912f9
> x26: 0000000000000000 x27: 0000000000000000
> x28: 0000000000000000 x29: 00000000feaf7b00
> 
> Resetting CPU ...
> 
> resetting ...
> 
> </snip>
> 
> Patches applied -
> 
> author   Bin Meng <bmeng.cn at gmail.com<mailto:bmeng.cn at gmail.com>>
>                 Thu, 12 Apr 2018 10:32:14 +0530 (22:02 -0700)
> commit  839c4e9c5bb09ac1ef2c129c7082a15b9cbd3a8a
> elf: Add a very simple ELF64 loader
> This adds a very simple ELF64 loader via program headers, similar
> to load_elf_image_phdr() that we already have.
> 
> author   Bin Meng <bmeng.cn at gmail.com<mailto:bmeng.cn at gmail.com>>
>                 Thu, 12 Apr 2018 10:32:13 +0530 (22:02 -0700)
> commit  2bce3f595d224fc620b07449d47fa2b08151a890
> elf: Add ELF64 related structure defines
> This adds ELF header, program header and section header structure
> defines for the 64-bit ELF image.
> 
> Regards
> 
> Siddharth
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