source: mainline/kernel/arch/ia32/src/ia32.c@ 36df4109

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 36df4109 was 36df4109, checked in by Jakub Jermar <jakub@…>, 10 years ago

Introduce architecure-specific operations

This replaces the arch_*_init() functions with an arch_ops_t structure
defined for each architecture. Undefined operations are treated as NOPs.
  • Property mode set to 100644
File size: 6.5 KB
Line 
1/*
2 * Copyright (c) 2001-2004 Jakub Jermar
3 * Copyright (c) 2009 Jiri Svoboda
4 * Copyright (c) 2009 Martin Decky
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * - Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * - Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * - The name of the author may not be used to endorse or promote products
17 * derived from this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31/** @addtogroup ia32
32 * @{
33 */
34/** @file
35 */
36
37#include <arch.h>
38#include <arch/arch.h>
39#include <typedefs.h>
40#include <errno.h>
41#include <memstr.h>
42#include <interrupt.h>
43#include <console/console.h>
44#include <syscall/syscall.h>
45#include <sysinfo/sysinfo.h>
46#include <arch/bios/bios.h>
47#include <arch/boot/boot.h>
48#include <arch/drivers/i8254.h>
49#include <arch/drivers/i8259.h>
50#include <genarch/acpi/acpi.h>
51#include <genarch/drivers/ega/ega.h>
52#include <genarch/drivers/i8042/i8042.h>
53#include <genarch/drivers/ns16550/ns16550.h>
54#include <genarch/drivers/legacy/ia32/io.h>
55#include <genarch/fb/bfb.h>
56#include <genarch/kbrd/kbrd.h>
57#include <genarch/srln/srln.h>
58#include <genarch/multiboot/multiboot.h>
59#include <genarch/multiboot/multiboot2.h>
60#include <arch/pm.h>
61#include <arch/vreg.h>
62
63#ifdef CONFIG_SMP
64#include <arch/smp/apic.h>
65#endif
66
67static void ia32_pre_mm_init(void);
68static void ia32_post_mm_init(void);
69static void ia32_post_cpu_init(void);
70static void ia32_pre_smp_init(void);
71static void ia32_post_smp_init(void);
72
73arch_ops_t ia32_ops = {
74 .pre_mm_init = ia32_pre_mm_init,
75 .post_mm_init = ia32_post_mm_init,
76 .post_cpu_init = ia32_post_cpu_init,
77 .pre_smp_init = ia32_pre_smp_init,
78 .post_smp_init = ia32_post_smp_init,
79};
80
81arch_ops_t *arch_ops = &ia32_ops;
82
83/** Perform ia32-specific initialization before main_bsp() is called.
84 *
85 * @param signature Multiboot signature.
86 * @param info Multiboot information structure.
87 *
88 */
89void ia32_pre_main(uint32_t signature, void *info)
90{
91 /* Parse multiboot information obtained from the bootloader. */
92 multiboot_info_parse(signature, (multiboot_info_t *) info);
93 multiboot2_info_parse(signature, (multiboot2_info_t *) info);
94
95#ifdef CONFIG_SMP
96 /* Copy AP bootstrap routines below 1 MB. */
97 memcpy((void *) AP_BOOT_OFFSET, (void *) BOOT_OFFSET,
98 (size_t) &_hardcoded_unmapped_size);
99#endif
100}
101
102void ia32_pre_mm_init(void)
103{
104 pm_init();
105
106 if (config.cpu_active == 1) {
107 interrupt_init();
108 bios_init();
109
110 /* PIC */
111 i8259_init();
112 }
113}
114
115void ia32_post_mm_init(void)
116{
117 vreg_init();
118
119 if (config.cpu_active == 1) {
120 /* Initialize IRQ routing */
121 irq_init(IRQ_COUNT, IRQ_COUNT);
122
123 /* hard clock */
124 i8254_init();
125
126#if (defined(CONFIG_FB) || defined(CONFIG_EGA))
127 bool bfb = false;
128#endif
129
130#ifdef CONFIG_FB
131 bfb = bfb_init();
132#endif
133
134#ifdef CONFIG_EGA
135 if (!bfb) {
136 outdev_t *egadev = ega_init(EGA_BASE, EGA_VIDEORAM);
137 if (egadev)
138 stdout_wire(egadev);
139 }
140#endif
141
142 /* Merge all memory zones to 1 big zone */
143 zone_merge_all();
144 }
145
146}
147
148void ia32_post_cpu_init(void)
149{
150#ifdef CONFIG_SMP
151 if (config.cpu_active > 1) {
152 l_apic_init();
153 l_apic_debug();
154 }
155#endif
156}
157
158void ia32_pre_smp_init(void)
159{
160 if (config.cpu_active == 1) {
161#ifdef CONFIG_SMP
162 acpi_init();
163#endif /* CONFIG_SMP */
164 }
165}
166
167void ia32_post_smp_init(void)
168{
169 /* Currently the only supported platform for ia32 is 'pc'. */
170 static const char *platform = "pc";
171
172 sysinfo_set_item_data("platform", NULL, (void *) platform,
173 str_size(platform));
174
175#ifdef CONFIG_PC_KBD
176 /*
177 * Initialize the i8042 controller. Then initialize the keyboard
178 * module and connect it to i8042. Enable keyboard interrupts.
179 */
180 i8042_instance_t *i8042_instance = i8042_init((i8042_t *) I8042_BASE, IRQ_KBD);
181 if (i8042_instance) {
182 kbrd_instance_t *kbrd_instance = kbrd_init();
183 if (kbrd_instance) {
184 indev_t *sink = stdin_wire();
185 indev_t *kbrd = kbrd_wire(kbrd_instance, sink);
186 i8042_wire(i8042_instance, kbrd);
187 trap_virtual_enable_irqs(1 << IRQ_KBD);
188 trap_virtual_enable_irqs(1 << IRQ_MOUSE);
189 }
190 }
191#endif
192
193#if (defined(CONFIG_NS16550) || defined(CONFIG_NS16550_OUT))
194 /*
195 * Initialize the ns16550 controller.
196 */
197#ifdef CONFIG_NS16550_OUT
198 outdev_t *ns16550_out;
199 outdev_t **ns16550_out_ptr = &ns16550_out;
200#else
201 outdev_t **ns16550_out_ptr = NULL;
202#endif
203 ns16550_instance_t *ns16550_instance
204 = ns16550_init((ns16550_t *) NS16550_BASE, IRQ_NS16550, NULL, NULL,
205 ns16550_out_ptr);
206 if (ns16550_instance) {
207#ifdef CONFIG_NS16550
208 srln_instance_t *srln_instance = srln_init();
209 if (srln_instance) {
210 indev_t *sink = stdin_wire();
211 indev_t *srln = srln_wire(srln_instance, sink);
212 ns16550_wire(ns16550_instance, srln);
213 trap_virtual_enable_irqs(1 << IRQ_NS16550);
214 }
215#endif
216#ifdef CONFIG_NS16550_OUT
217 if (ns16550_out) {
218 stdout_wire(ns16550_out);
219 }
220#endif
221 }
222#endif
223
224 if (irqs_info != NULL)
225 sysinfo_set_item_val(irqs_info, NULL, true);
226}
227
228void calibrate_delay_loop(void)
229{
230 i8254_calibrate_delay_loop();
231 if (config.cpu_active == 1) {
232 /*
233 * This has to be done only on UP.
234 * On SMP, i8254 is not used for time keeping and its interrupt pin remains masked.
235 */
236 i8254_normal_operation();
237 }
238}
239
240/** Construct function pointer
241 *
242 * @param fptr function pointer structure
243 * @param addr function address
244 * @param caller calling function address
245 *
246 * @return address of the function pointer
247 *
248 */
249void *arch_construct_function(fncptr_t *fptr, void *addr, void *caller)
250{
251 return addr;
252}
253
254void arch_reboot(void)
255{
256#ifdef CONFIG_PC_KBD
257 i8042_cpu_reset((i8042_t *) I8042_BASE);
258#endif
259}
260
261void irq_initialize_arch(irq_t *irq)
262{
263 (void) irq;
264}
265
266/** @}
267 */
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