64 lines
2.8 KiB
C
64 lines
2.8 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause */
|
|
/* See the end of this file for copyright, licensing, and warranty information. */
|
|
|
|
#pragma once
|
|
|
|
#include <arch/arch_include.h>
|
|
|
|
/**
|
|
* Block the CPU by continuously checking the same expression in an
|
|
* infinite loop, until the condition is true. Useful for polling.
|
|
*
|
|
* @param expr The expression.
|
|
*/
|
|
#define mom_are_we_there_yet(expr) ({ while (!(expr)); })
|
|
|
|
/**
|
|
* Initialize the system hardware.
|
|
* This function is responsible for putting the entire system to a state that
|
|
* allows the Kernel to perform its bootstrap procedure and is therefore the
|
|
* first thing to be called by `do_bootstrap`. Possible tasks to be dealt with
|
|
* here include:
|
|
*
|
|
* - Performing sanity checks to see if there are any major hardware faults
|
|
* - Setting up the CPU frequency and other oscillators
|
|
* - Communicating that frequency change to any hardware component that needs
|
|
* to know about it (especially the flash controller)
|
|
* - Enabling interrupts that are vital for stable operation
|
|
*
|
|
* If any of this fails, an on-chip LED should be used to "morse" some kind of
|
|
* diagnostic message, if the system has one (kind of like BIOS beep codes).
|
|
*/
|
|
void sys_init(void);
|
|
|
|
#ifndef STACK_SIZE
|
|
/** stack size per process in bytes */
|
|
#define STACK_SIZE 2048U
|
|
#endif
|
|
|
|
#include ARCH_INCLUDE(hardware.h)
|
|
|
|
/*
|
|
* Copyright (c) 2020 Felix Kopp <sandtler@sandtler.club>
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without modification, are permitted
|
|
* provided that the following conditions are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright notice, this list of
|
|
* conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright notice, this list of
|
|
* conditions and the following disclaimer in the documentation and/or other materials
|
|
* provided with the distribution.
|
|
* 3. Neither the name of the copyright holder nor the names of its contributors may be
|
|
* used to endorse or promote products derived from this software without specific prior
|
|
* written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
|
|
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
|
|
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
|
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
|
|
* WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|