| /* |
| * |
| * Copyright 2016 Google Inc. |
| * |
| * 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. |
| * |
| * 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 <assert.h> |
| #include <libpayload.h> |
| |
| uint64_t timer_hz(void) |
| { |
| return CONFIG_LP_TIMER_GENERIC_HZ; |
| } |
| |
| uint64_t timer_raw_value(void) |
| { |
| uint64_t cur_tick; |
| uint32_t count_h; |
| uint32_t count_l; |
| |
| if (!CONFIG_LP_TIMER_GENERIC_HIGH_REG) |
| return readl(phys_to_virt(CONFIG_LP_TIMER_GENERIC_REG)); |
| |
| do { |
| 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_HIGH_REG)); |
| } while (cur_tick != count_h); |
| |
| return (cur_tick << 32) + count_l; |
| } |