diff options
Diffstat (limited to 'src/soc/broadcom/cygnus/timer.c')
-rw-r--r-- | src/soc/broadcom/cygnus/timer.c | 67 |
1 files changed, 0 insertions, 67 deletions
diff --git a/src/soc/broadcom/cygnus/timer.c b/src/soc/broadcom/cygnus/timer.c deleted file mode 100644 index 78d996fb37..0000000000 --- a/src/soc/broadcom/cygnus/timer.c +++ /dev/null @@ -1,67 +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 <delay.h> -#include <soc/addressmap.h> -#include <timer.h> - -#define TIMER_GLB_TIM_CTRL_PRESC_MASK 0x0000FF00 -#define TIMER_GLB_TIM_CTRL_TIM_EN 0x00000001 -#define TIMER_GLB_TIM_CTRL_PRESC 0x0 -/* - * arm clk is 1GHz, periph_clk=arm_clk/2, tick per usec. - * arm clk is set by the bootrom. See util/broadcom/unauth.cfg for details. - */ -#define PERIPH_CLOCK 500 -#define CLOCKS_PER_USEC (PERIPH_CLOCK / \ - (((TIMER_GLB_TIM_CTRL_PRESC & TIMER_GLB_TIM_CTRL_PRESC_MASK) >> 8) + 1)) - -struct cygnus_timer { - u32 gtim_glob_low; - u32 gtim_glob_hi; - u32 gtim_glob_ctrl; -}; - -static struct cygnus_timer * const timer_ptr = - (void *)IPROC_PERIPH_GLB_TIM_REG_BASE; - -static inline uint64_t timer_raw_value(void) -{ - uint64_t cur_tick; - uint32_t count_h; - uint32_t count_l; - - do { - count_h = read32(&timer_ptr->gtim_glob_hi); - count_l = read32(&timer_ptr->gtim_glob_low); - cur_tick = read32(&timer_ptr->gtim_glob_hi); - } while (cur_tick != count_h); - - return (cur_tick << 32) + count_l; -} - -void timer_monotonic_get(struct mono_time *mt) -{ - mono_time_set_usecs(mt, timer_raw_value() / CLOCKS_PER_USEC); -} - -void init_timer(void) -{ - write32(&timer_ptr->gtim_glob_ctrl, TIMER_GLB_TIM_CTRL_PRESC); - write32(&timer_ptr->gtim_glob_low, 0); - write32(&timer_ptr->gtim_glob_hi, 0); - write32(&timer_ptr->gtim_glob_ctrl, TIMER_GLB_TIM_CTRL_TIM_EN); -} |