/* * This file is part of the libpayload project. * * Copyright (C) 2014 Imagination Technologies * * 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. */ #include <libpayload-config.h> #include <libpayload.h> #include <coreboot_tables.h> #include <multiboot_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 we can't get a good memory range, use the default. */ if (!lib_sysinfo.n_memranges) { lib_sysinfo.n_memranges = 1; lib_sysinfo.memrange[0].base = 0; lib_sysinfo.memrange[0].size = 1024 * 1024; lib_sysinfo.memrange[0].type = CB_MEM_RAM; } return ret; }