diff options
Diffstat (limited to 'src/soc/marvell/armada38x/monotonic_timer.c')
-rw-r--r-- | src/soc/marvell/armada38x/monotonic_timer.c | 57 |
1 files changed, 0 insertions, 57 deletions
diff --git a/src/soc/marvell/armada38x/monotonic_timer.c b/src/soc/marvell/armada38x/monotonic_timer.c deleted file mode 100644 index 49fa6cd76f..0000000000 --- a/src/soc/marvell/armada38x/monotonic_timer.c +++ /dev/null @@ -1,57 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright 2015 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. - * - * 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 <arch/io.h> -#include <timer.h> -#include <delay.h> - -#define TIMER_CTRL_REG 0xf1020300 -#define TIMER_RELOAD_REG 0xf1020310 -#define TIMER_REG 0xf1020314 -#define TIMER_RELOAD_VALUE 0xffffffff - -#define MHZ_NUM 25 - -void init_timer(void) -{ - unsigned int reg; - - /* Set the reload timer */ - write32((void *)TIMER_RELOAD_REG, TIMER_RELOAD_VALUE); - /* Set the initial value to TIMER_RELOAD_VALUE - 1 - * (instead of TIMER_RELOAD_VALUE) to avoid 'fake' - * overflow being detected in timer_monotonic_get - * if it's called close enough with 'this' function */ - write32((void *)TIMER_REG, TIMER_RELOAD_VALUE - 1); - reg = read32((const void *)TIMER_CTRL_REG); - /* Let it start counting */ - reg |= 0x3; - write32((void *)TIMER_CTRL_REG, reg); -} - -void timer_monotonic_get(struct mono_time *mt) -{ - static uint64_t total_ticks = 0; - uint64_t overflow = 0; - uint32_t current_ticks = - TIMER_RELOAD_VALUE - read32((const void *)TIMER_REG); - - /* Assuming at most one overflow happened since last call */ - if (current_ticks <= total_ticks) - overflow = 1ULL << 32; - - total_ticks = (((total_ticks + overflow) >> 32) << 32) + current_ticks; - mono_time_set_usecs(mt, total_ticks / MHZ_NUM); -} |