This Linux kernel branch implements the o32 ABI for the Sony PlayStation 2.
# uname -mrs
Linux 5.4.221+ mips
# cat /proc/cpuinfo
system type : Sony PlayStation 2
machine : SCPH-37000 L
processor : 0
cpu model : R5900 V3.1
BogoMIPS : 291.58
wait instruction : no
microsecond timers : yes
tlb_entries : 48
extra interrupt vector : yes
hardware watchpoint : no
isa : mips1 mips3
ASEs implemented : toshiba-mmi
shadow register sets : 1
kscratch registers : 0
package : 0
core : 0
VCED exceptions : not available
VCEI exceptions : not available
The wiki has frequently asked questions about PlayStation 2 Linux.
This kernel can be started directly from a USB flash drive, using for example uLaunchELF for the PlayStation 2. A special kernel loader is unnecessary.
The wiki has a guide on building and installing PlayStation 2 Linux.
There is a Gentoo live USB for the PlayStation 2.
R5900 QEMU can be used to emulate programs compiled for PlayStation 2 Linux.
Review the general README for further information on the Linux kernel.