diff options
Diffstat (limited to 'payloads/libpayload/arch/i386/sysinfo.c')
| -rw-r--r-- | payloads/libpayload/arch/i386/sysinfo.c | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/payloads/libpayload/arch/i386/sysinfo.c b/payloads/libpayload/arch/i386/sysinfo.c new file mode 100644 index 0000000000..599a81140d --- /dev/null +++ b/payloads/libpayload/arch/i386/sysinfo.c @@ -0,0 +1,76 @@ +/* + * 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, +#ifdef CONFIG_SERIAL_CONSOLE + .ser_ioport = CONFIG_SERIAL_IOBASE, +#else + .ser_ioport = 0x3f8, +#endif +}; + +void lib_get_sysinfo(void) +{ + /* Get the CPU speed (for delays). */ + lib_sysinfo.cpu_khz = get_cpu_speed(); + +#ifdef CONFIG_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 */ + + 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; + } +} |