taglinefilesource code
CATTR489arch/ppc/kernel/raw_printf.c#define  CATTR(x) (x)    /* store color/attributes un-shifted */
CATTR515arch/ppc/kernel/raw_printf.cpccolor = CATTR((background<<4)|foreground);
CATTR516arch/ppc/kernel/raw_printf.cpccolor_so = CATTR((foreground<<4)|background);