diff --git a/payloads/libpayload/drivers/timer/generic.c b/payloads/libpayload/drivers/timer/generic.c index 1f516a26f6..4c066182fc 100644 --- a/payloads/libpayload/drivers/timer/generic.c +++ b/payloads/libpayload/drivers/timer/generic.c @@ -1,24 +1,39 @@ /* - * This file is part of the coreboot project. + * This file is part of the libpayload project. * * Copyright 2016 Google Inc. * - * 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; version 2 of the License. + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. * - * 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. + * Alternatively, this software may be distributed under the terms of the + * GNU General Public License ("GPL") version 2 as published by the Free + * Software Foundation. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. */ #include #include -static uint32_t *low_reg = (void *)CONFIG_LP_TIMER_GENERIC_REG; -static uint32_t *high_reg = (void *)CONFIG_LP_TIMER_GENERIC_HIGH_REG; - uint64_t timer_hz(void) { /* libc/time.c currently requires all timers to be at least 1MHz. */ @@ -32,13 +47,13 @@ uint64_t timer_raw_value(void) uint32_t count_h; uint32_t count_l; - if (!high_reg) - return readl(low_reg); + if (!CONFIG_LP_TIMER_GENERIC_HIGH_REG) + return readl(phys_to_virt(CONFIG_LP_TIMER_GENERIC_REG)); do { - count_h = readl(high_reg); - count_l = readl(low_reg); - cur_tick = readl(high_reg); + count_h = readl(phys_to_virt(CONFIG_LP_TIMER_GENERIC_HIGH_REG)); + count_l = readl(phys_to_virt(CONFIG_LP_TIMER_GENERIC_REG)); + cur_tick = readl(phys_to_virt(CONFIG_LP_TIMER_GENERIC_REG)); } while (cur_tick != count_h); return (cur_tick << 32) + count_l;