1 /*
2 *
3 * Copyright (C) 2008 Advanced Micro Devices, Inc.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 #include <libpayload-config.h>
30 #include <libpayload.h>
31 #include <coreboot_tables.h>
32
33 /**
34 * This is a global structure that is used through the library - we set it
35 * up initially with some dummy values - hopefully they will be overridden.
36 */
37 struct sysinfo_t lib_sysinfo = {
38 .cpu_khz = 200,
39 };
40
lib_get_sysinfo(void)41 int lib_get_sysinfo(void)
42 {
43 int ret;
44
45 /* Get the CPU speed (for delays). */
46 lib_sysinfo.cpu_khz = get_cpu_speed();
47
48 /* Get information from the coreboot tables,
49 * if they exist */
50
51 ret = get_coreboot_info(&lib_sysinfo);
52
53 if (!lib_sysinfo.n_memranges) {
54 /* If we can't get a good memory range, use the default. */
55 lib_sysinfo.n_memranges = 1;
56
57 lib_sysinfo.memrange[0].base = 0;
58 lib_sysinfo.memrange[0].size = 1024 * 1024;
59 lib_sysinfo.memrange[0].type = CB_MEM_RAM;
60 }
61
62 return ret;
63 }
64
lib_sysinfo_get_memranges(struct memrange ** ranges,uint64_t * nranges)65 void lib_sysinfo_get_memranges(struct memrange **ranges,
66 uint64_t *nranges)
67 {
68 *ranges = &lib_sysinfo.memrange[0];
69 *nranges = lib_sysinfo.n_memranges;
70 }
71