From c14b54dd170cb2fae16a5086134208caba0593f8 Mon Sep 17 00:00:00 2001 From: huang lin Date: Wed, 2 Mar 2016 18:38:40 +0800 Subject: rockchip/rk3399: Add a stub implementation of the rk3399 SOC Most things still need to be filled in, but this will allow us to build boards which use this SOC. BRANCH=none BUG=chrome-os-partner:51537 TEST=with the rest of the patches applied Kevin board can be booted to Linux login propmt. Change-Id: I6f2407ff578dcd3d0daed86dd03d8f5f4edcac53 Signed-off-by: Patrick Georgi Original-Commit-Id: 27dfc39efe95025be2271e2e00e9df93b7907840 Original-Change-Id: I6f2407ff578dcd3d0daed86dd03d8f5f4edcac53 Original-Signed-off-by: huang lin Original-Signed-off-by: Vadim Bendebury Original-Reviewed-on: https://chromium-review.googlesource.com/332385 Reviewed-on: https://review.coreboot.org/13915 Tested-by: build bot (Jenkins) Reviewed-by: Martin Roth --- src/soc/rockchip/rk3399/timer.c | 45 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 src/soc/rockchip/rk3399/timer.c (limited to 'src/soc/rockchip/rk3399/timer.c') diff --git a/src/soc/rockchip/rk3399/timer.c b/src/soc/rockchip/rk3399/timer.c new file mode 100644 index 0000000000..96cf540f1f --- /dev/null +++ b/src/soc/rockchip/rk3399/timer.c @@ -0,0 +1,45 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2016 Rockchip 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 +#include +#include +#include +#include + +static uint64_t timer_raw_value(void) +{ + uint64_t value0; + uint64_t value1; + + value0 = (uint64_t)read32(&timer0_ptr->timer_cur_value0); + value1 = (uint64_t)read32(&timer0_ptr->timer_cur_value1); + + return value0 | value1<<32; +} + +void timer_monotonic_get(struct mono_time *mt) +{ + mono_time_set_usecs(mt, timer_raw_value() / clocks_per_usec); +} + +void init_timer(void) +{ + write32(&timer0_ptr->timer_load_count0, TIMER_LOAD_VAL); + write32(&timer0_ptr->timer_load_count1, TIMER_LOAD_VAL); + write32(&timer0_ptr->timer_load_count2, 0); + write32(&timer0_ptr->timer_load_count3, 0); + write32(&timer0_ptr->timer_ctrl_reg, 1); +} -- cgit v1.2.3