Probably not, but there may be a workaround. The closest cpu to Octeon that is supported in QEMU is "MIPS64R2-generic".
Please try using switch -cpu MIPS64R2-generic in your QEMU command line.
Also, I think you should use qemu-mipsn32 rather than qemu-mips or qemu-mips64.
I don't have much hope that all this will work, but it is worth trying.
Probably not, but there may be a workaround. The closest cpu to Octeon that is supported in QEMU is "MIPS64R2-generic".
Please try using switch -cpu MIPS64R2-generic in your QEMU command line.
Also, I think you should use qemu-mipsn32 rather than qemu-mips or qemu-mips64.
I don't have much hope that all this will work, but it is worth trying.