1 /* 2 * Derived from the i386 version. 3 */ 4 5 /* 6 * This assumes you have a 1.8432 MHz clock for your UART. 7 * 8 * It'd be nice if someone built a serial card with a 24.576 MHz 9 * clock, since the 16550A is capable of handling a top speed of 1.5 10 * megabits/second; but this requires the faster clock. 11 */ 12 #define BASE_BAUD ( 1843200 / 16 ) 13 14 /* 15 * All legacy serial ports should be enumerated via ACPI namespace, so 16 * we need not list them here. 17 */ 18