mirror of
https://github.com/zephyrproject-rtos/zephyr
synced 2025-08-18 01:25:21 +00:00
0b474eef9c
PRIMARY, SECONDARY, NANOKERNEL, MICROKERNEL init levels are now deprecated. New init levels introduced: PRE_KERNEL_1, PRE_KERNEL_2, POST_KERNEL to replace them. Most existing code has instances of PRIMARY replaced with PRE_KERNEL_1, SECONDARY with POST_KERNEL as SECONDARY has had a longstanding bug where the documentation specified SECONDARY ran before the kernel started up, but actually ran afterwards. Change-Id: I771bc634e9caf7f17dbf214a270bc9967eed7d32 Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
38 lines
1.4 KiB
C
38 lines
1.4 KiB
C
/*
|
|
* Copyright (c) 2015 Wind River Systems, Inc.
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
/**
|
|
* @file
|
|
* @brief Initialize system clock driver
|
|
*
|
|
* Initializing the timer driver is done in this module to reduce code
|
|
* duplication. Although both nanokernel and microkernel systems initialize
|
|
* the timer driver at the same point, the two systems differ in when the system
|
|
* can begin to process system clock ticks. A nanokernel system can process
|
|
* system clock ticks once the driver has initialized. However, in a
|
|
* microkernel system all system clock ticks are deferred (and stored on the
|
|
* kernel server command stack) until the kernel server fiber starts and begins
|
|
* processing any queued ticks.
|
|
*/
|
|
|
|
#include <nanokernel.h>
|
|
#include <init.h>
|
|
#include <drivers/system_timer.h>
|
|
|
|
SYS_DEVICE_DEFINE("sys_clock", _sys_clock_driver_init,
|
|
sys_clock_device_ctrl, POST_KERNEL,
|
|
CONFIG_SYSTEM_CLOCK_INIT_PRIORITY);
|