/* * (C) Copyright 2000, 2001 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * */ #include #include #include #include #include static uint64_t ppc_clocksource_read(void) { return get_ticks(); } static struct clocksource cs = { .read = ppc_clocksource_read, .mask = CLOCKSOURCE_MASK(32), .shift = 15, }; static int clocksource_init(void) { /* reset time base */ asm ("li 3,0 ; mttbu 3 ; mttbl 3 ;"); cs.mult = clocksource_hz2mult(get_timebase_clock(), cs.shift); return init_clock(&cs); } core_initcall(clocksource_init);