All symbols starting with `o' in arch/i386/boot

• one arch/i386/boot/start.s:180
• openrd arch/i386/boot/sys.c:156
• Otherwise arch/i386/boot/readme.mach:52
• ouraddr arch/i386/boot/boot.h:51
• OUTB arch/i386/boot/asm.h:134
• OUTL arch/i386/boot/asm.h:136