1 /* $NetBSD: autoconf.c,v 1.107 2020/05/02 16:44:35 bouyer Exp $ */
2
3 /*-
4 * Copyright (c) 1990 The Regents of the University of California.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * William Jolitz.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 * @(#)autoconf.c 7.1 (Berkeley) 5/9/91
35 */
36
37 /*
38 * Setup the system to run on the current machine.
39 *
40 * Configure() is called at boot time and initializes the vba
41 * device tables and the memory controller monitoring. Available
42 * devices are determined (from possibilities mentioned in ioconf.c),
43 * and the drivers are initialized.
44 *
45 * Lots of this is now in x86/x86/x86_autoconf.c
46 */
47
48 #include <sys/cdefs.h>
49 __KERNEL_RCSID(0, "$NetBSD: autoconf.c,v 1.107 2020/05/02 16:44:35 bouyer Exp $");
50
51 #include "opt_intrdebug.h"
52 #include "opt_multiprocessor.h"
53
54 #include <sys/param.h>
55 #include <sys/systm.h>
56 #include <sys/buf.h>
57 #include <sys/proc.h>
58 #include <sys/device.h>
59
60 #include <machine/pte.h>
61 #include <machine/cpu.h>
62 #include <machine/gdt.h>
63 #include <machine/intr.h>
64 #include <machine/pcb.h>
65 #include <machine/cpufunc.h>
66 #include <x86/fpu.h>
67
68 #include "acpica.h"
69 #include "ioapic.h"
70 #include "lapic.h"
71
72 #if NACPICA > 0
73 #include <dev/acpi/acpi_srat.h>
74 #endif
75
76 #if NIOAPIC > 0
77 #include <machine/i82093var.h>
78 #endif
79
80 #if NLAPIC > 0
81 #include <machine/i82489reg.h>
82 #include <machine/i82489var.h>
83 #endif
84
85 #include "bios32.h"
86 #if NBIOS32 > 0
87 #include <machine/bios32.h>
88 /* XXX */
89 extern void platform_init(void);
90 #endif
91
92 #include "opt_pcibios.h"
93 #ifdef PCIBIOS
94 #include <dev/pci/pcireg.h>
95 #include <dev/pci/pcivar.h>
96 #include <i386/pci/pcibios.h>
97 #endif
98 #include <x86/efi.h>
99
100 /*
101 * Determine i/o configuration for a machine.
102 */
103 void
cpu_configure(void)104 cpu_configure(void)
105 {
106 struct pcb *pcb;
107
108 #ifdef XEN
109 if (vm_guest == VM_GUEST_XENPVH)
110 xen_startrtclock();
111 else
112 startrtclock();
113 #else
114 startrtclock();
115 #endif
116
117 #if NBIOS32 > 0
118 efi_init();
119 bios32_init();
120 platform_init();
121 /* identify hypervisor type from SMBIOS */
122 identify_hypervisor();
123 #endif
124 #ifdef PCIBIOS
125 pcibios_init();
126 #endif
127
128 if (config_rootfound("mainbus", NULL) == NULL)
129 panic("configure: mainbus not configured");
130
131 #ifdef INTRDEBUG
132 intr_printconfig();
133 #endif
134
135 #if NIOAPIC > 0
136 ioapic_enable();
137 #endif
138 fpuinit(&cpu_info_primary);
139 /* resync cr0 after FPU configuration */
140 pcb = lwp_getpcb(&lwp0);
141 pcb->pcb_cr0 = rcr0() & ~CR0_TS;
142 #ifdef MULTIPROCESSOR
143 /* propagate this to the idle pcb's. */
144 cpu_init_idle_lwps();
145 #endif
146
147 #if NACPICA > 0
148 /* Load NUMA memory regions into UVM. */
149 acpisrat_load_uvm();
150 #endif
151
152 spl0();
153 #if NLAPIC > 0
154 lapic_write_tpri(0);
155 #endif
156 }
157