Questions:
1) Is uboot capable of booting a 64bit elf file on the T2080RDB?
2) Do some of the configuration options need to be changed to successfully load a 64bit elf file on uboot?
3) Is there a version of uboot I can flash on the target to load a 64bit elf binary?
Details:
I’m trying to boot a 64bit elf file from uboot on the T2080RDB-PC rev.C board, the version of uboot I am using is:
=> version
U-Boot 2016.012.0+ga9b437f (May 15 2016 - 10:38:22 +0800)
powerpc-fslmllib32-linux-gcc (GCC) 4.9.2
GNU ld (GNU Binutils) 2.25
And the output of readelf on the header of the file I am trying to load looks like so:
ELF Header:
Magic: 7f 45 4c 46 02 02 01 00 00 00 00 00 00 00 00 00
Class: ELF64
Data: 2's complement, big endian
Version: 1 (current)
OS/ABI: UNIX - System V
ABI Version: 0
Type: EXEC (Executable file)
Machine: PowerPC64
Version: 0x1
Entry point address: 0x43a00
Start of program headers: 64 (bytes into file)
Start of section headers: 748560 (bytes into file)
Flags: 0x1
Size of this header: 64 (bytes)
Size of program headers: 56 (bytes)
Number of program headers: 49
Size of section headers: 64 (bytes)
Number of section headers: 95
Section header string table index: 94
When I try to boot the application (using tftpboot and then bootelf) I get output like below:
=> tftpboot HelloWorld
Using FM1@DTSEC3 device
TFTP from server 192.168.6.120; our IP address is 192.168.6.230
Filename 'HelloWorld'.
Load address: 0x1000000
Loading: #################################################################
#################################################################
##################
3.2 MiB/s
done
Bytes transferred = 754640 (b83d0 hex)
=> bootelf
## Starting application at 0x00000000 ...
Bad trap at PC: ffff98e8, SR: 16024900, vector=e00
NIP: FFFF98E8 XER: 00000000 LR: 7FEF0B6C REGS: 7faedbe0 TRAP: 0e00 DAR: 00000000
MSR: 16024900 EE: 0 PR: 1 FP: 0 ME: 0 IR/DR: 00
GPR00: 7FF02040 7FAEDCD0 7FAEDEF8 00000000 7FAF4D24 7FAEDB9B 00000020 7FAEDB9C
GPR08: FFFFFFFE 00000020 00000020 7FAEDCD0 44022082 80000000 7FF5FA48 7FAF4D20
GPR16: 7FF5FA38 0000000A 7FAF4D10 00000000 7FAF4D40 00000000 00000000 FFFF98E8
GPR24: 00000000 7FFB029C 00000001 00000000 7FAF4D24 00000000 7FF745C0 00000001
Call backtrace:
7FF02040 7FF1D060 7FEFDDDC 7FEFE59C 7FEFE64C 7FF1BA4C 7FEFBE9C
7FEFEED8 7FF4DCEC 7FEFF2E4 7FEF0F50
Exception in kernel pc ffff98e8 signal 0
It looks like it trying to start the application at 0x00000000, which really doesn’t seem correct when the start address from the elf header is 0x43a00.
Is uboot capable of booting a 64bit elf file?
Do some of the configuration options need to be changed to successfully load a 64bit elf file on uboot?
Is there a version of uboot I can flash on the target to load a 64bit elf binary?
Any help would be appreciated.
Thanks,
t2080rdb
64-bit
elf
uboot;
t2080 uboot
