/* * This file is part of the coreboot project. * * Copyright (C) 2007 coresystems GmbH * (Written by Stefan Reinauer for coresystems GmbH) * * 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. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef LIB_H #define LIB_H #include /** * Return the size of a given array, no matter of which data type * the individual array elements are. */ #define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0])) /* you have to explicity pick logc2 (ceiling) or log2f (floor) * it is a no-op if you KNOW that your number is a power of 2. * It is important to know what you are doing otherwise. * example: log2c(72) is 7, log2f(72) is 6! */ int log2c(unsigned int n); int log2f(unsigned int n); void udelay(unsigned int usecs); void mdelay(unsigned int msecs); void delay(unsigned int secs); /* all architectures must implement a 64-bit time counter * that is compiled into stage1 * rdtsc is usually fine. */ u64 cycles(void); void beep_short(void); void beep_long(void); /* Optional ramtest. */ int ram_check(unsigned long start, unsigned long stop); /* required: a way to tell if this is a: * power-on/reset (coldboot) OR * coreboot has initiated a reset (warmboot). */ int is_coldboot(void); #endif /* LIB_H */