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/*
* 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>
#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,
#if IS_ENABLED(CONFIG_LP_SERIAL_CONSOLE)
.ser_ioport = CONFIG_LP_SERIAL_IOBASE,
#else
.ser_ioport = 0x3f8,
#endif
};
int lib_get_sysinfo(void)
{
int ret;
/* Get the CPU speed (for delays). */
lib_sysinfo.cpu_khz = get_cpu_speed();
#if IS_ENABLED(CONFIG_LP_MULTIBOOT)
/* Get the information from the multiboot tables,
* if they exist */
get_multiboot_info(&lib_sysinfo);
#endif
/* 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 = 640 * 1024;
lib_sysinfo.memrange[0].type = CB_MEM_RAM;
lib_sysinfo.memrange[1].base = 1024 * 1024;
lib_sysinfo.memrange[1].size = 31 * 1024 * 1024;
lib_sysinfo.memrange[1].type = CB_MEM_RAM;
}
return ret;
}
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