[Qemu-devel] u-boot on 'qemu-system-mips64 -M mips'

[KAWAKATSU Noritaka <kawakatsu.noritaka@interdesigntech.co.jp>]

Hi,

I have built u-boot binary for 'qemu-system-mips -M mips'.
It is fine to run ths u-boot binary.
But the same u-boot binary does not run on 'qemu-system-mips64 -M mips'.

I do not understand what happends on the qemu-mips64 execution.
Is this a bug for qemu-system-mips64 ?
Or should I build u-boot binary by another configuration?

------
* u-boot building steps
(1) build the gcc 4.5 cross-compiler for mips from the source.
(2) build u-boot(2010.03) by the (1)compiler.
(3) copy the u-boot.bin to /usr/share/qemu/mips_bios.bin
* qemu(mips) execution command
$ qemu-system-mips -L /usr/share/qemu -d in_asm -nographic
* get /tmp/qemu.log
the execution seems fine.

* qemu(mips64) execution command
$ qemu-system-mips64 -L /usr/share/qemu -d in_asm -nographic
* get /tmp/qemu.log
the execution seems not fine. Something is wrong?



----- /tmp/qemu.log (last 10-20 lines) [qemu-system-mips64]
IN:
0xffffffffbfc0ee8c:  xori	v0,v0,0x3d
0xffffffffbfc0ee90:  li	v1,-1
0xffffffffbfc0ee94:  movn	s1,v1,v0
0xffffffffbfc0ee98:  lw	ra,52(sp)
0xffffffffbfc0ee9c:  move	v0,s1
0xffffffffbfc0eea0:  lw	s3,48(sp)
0xffffffffbfc0eea4:  lw	s2,44(sp)
0xffffffffbfc0eea8:  lw	s1,40(sp)
0xffffffffbfc0eeac:  lw	s0,36(sp)
0xffffffffbfc0eeb0:  jr	ra
0xffffffffbfc0eeb4:  addiu	sp,sp,56

helper_raise_exception_err: 20 0
do_interrupt enter: PC ffffffffbfc0ee94 EPC 0000000000000000 reserved instruction exception
do_interrupt: PC ffffffffbfc00380 EPC ffffffffbfc0ee94 cause 10
    S 00400002 C 00808428 A 0000000000000000 D 0000000000000000
IN:
0xffffffffbfc00380:  b	0xffffffffbfc00584
0xffffffffbfc00384:  li	k0,896

IN:
0xffffffffbfc00584:  b	0xffffffffbfc00584
0xffffffffbfc00588:  nop
-----

----- /tmp/qemu.log (last 10-20 lines) [qemu-system-mips](coresponding part)
IN:
0xbfc0ee8c:  xori	v0,v0,0x3d
0xbfc0ee90:  li	v1,-1
0xbfc0ee94:  movn	s1,v1,v0
0xbfc0ee98:  lw	ra,52(sp)
0xbfc0ee9c:  move	v0,s1
0xbfc0eea0:  lw	s3,48(sp)
0xbfc0eea4:  lw	s2,44(sp)
0xbfc0eea8:  lw	s1,40(sp)
0xbfc0eeac:  lw	s0,36(sp)
0xbfc0eeb0:  jr	ra
0xbfc0eeb4:  addiu	sp,sp,56
-----

--
Noritaka KAWAKATSU