coreboot-kgpe-d16/payloads/libpayload/drivers/timer/img_pistachio.c

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/*
* This file is part of the libpayload project.
*
* Copyright (C) 2014 Imagination Technologies
*
* 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.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <libpayload.h>
#include <arch/cpu.h>
static int get_timer_speed_khz(void)
{
return get_cpu_speed()/2;
}
uint64_t timer_hz(void)
{
return lib_sysinfo.cpu_khz * 1000;
}
uint64_t timer_raw_value(void)
{
return read_c0_count()/(get_timer_speed_khz()/1000);
}