TXR               105 arch/x86/boot/compressed/misc.c 	outb(ch, early_serial_base + TXR);
TXR                35 arch/x86/boot/tty.c 	outb(ch, early_serial_base + TXR);
TXR               119 arch/x86/kernel/early_printk.c 	serial_out(early_serial_base, TXR, ch);