/* * This file is part of the libpayload project. * * Copyright (C) 2008 Advanced Micro Devices, Inc. * * 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. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. */ #include <libpayload-config.h> #include <libpayload.h> #include <coreboot_tables.h> /** * This is a global structure that is used through the library - we set it * up initially with some dummy values - hopefully they will be overridden. */ struct sysinfo_t lib_sysinfo = { .cpu_khz = 200, }; int lib_get_sysinfo(void) { int ret; /* Get the CPU speed (for delays). */ lib_sysinfo.cpu_khz = get_cpu_speed(); /* Get information from the coreboot tables, * if they exist */ ret = get_coreboot_info(&lib_sysinfo); if (!lib_sysinfo.n_memranges) { /* If we can't get a good memory range, use the default. */ lib_sysinfo.n_memranges = 2; lib_sysinfo.memrange[0].base = 0; lib_sysinfo.memrange[0].size = 1024 * 1024; lib_sysinfo.memrange[0].type = CB_MEM_RAM; } return ret; }