source: mainline/kernel/arch/ia32/src/ia32.c@ 534bcdf

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 534bcdf was 534bcdf, checked in by Jakub Jermar <jakub@…>, 6 years ago

Always configure pic1 to start 8 IRQs after pic0
  • Property mode set to 100644
File size: 6.9 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 kernel_ia32
32 * @{
33 */
34/** @file
35 */
36
37#include <arch.h>
38#include <arch/arch.h>
39#include <stdint.h>
40#include <errno.h>
41#include <mem.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 <genarch/acpi/acpi.h>
50#include <genarch/drivers/ega/ega.h>
51#include <genarch/drivers/i8042/i8042.h>
52#include <genarch/drivers/i8259/i8259.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 size_t unmapped_size = (uintptr_t) unmapped_end - BOOT_OFFSET;
97 /* Copy AP bootstrap routines below 1 MB. */
98 memcpy((void *) AP_BOOT_OFFSET, (void *) BOOT_OFFSET, 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((i8259_t *) I8259_PIC0_BASE,
112 (i8259_t *) I8259_PIC1_BASE, IRQ_PIC1, IVT_IRQBASE);
113
114 /*
115 * Set the enable/disable IRQs handlers.
116 * Set the End-of-Interrupt handler.
117 */
118 enable_irqs_function = pic_enable_irqs;
119 disable_irqs_function = pic_disable_irqs;
120 eoi_function = pic_eoi;
121 irqs_info = "i8259";
122 }
123}
124
125void ia32_post_mm_init(void)
126{
127 vreg_init();
128
129 if (config.cpu_active == 1) {
130 /* Initialize IRQ routing */
131 irq_init(IRQ_COUNT, IRQ_COUNT);
132
133 /* hard clock */
134 i8254_init();
135
136#if (defined(CONFIG_FB) || defined(CONFIG_EGA))
137 bool bfb = false;
138#endif
139
140#ifdef CONFIG_FB
141 bfb = bfb_init();
142#endif
143
144#ifdef CONFIG_EGA
145 if (!bfb) {
146 outdev_t *egadev = ega_init(EGA_BASE, EGA_VIDEORAM);
147 if (egadev)
148 stdout_wire(egadev);
149 }
150#endif
151
152 /* Merge all memory zones to 1 big zone */
153 zone_merge_all();
154 }
155}
156
157void ia32_post_cpu_init(void)
158{
159#ifdef CONFIG_SMP
160 if (config.cpu_active > 1) {
161 l_apic_init();
162 l_apic_debug();
163 }
164#endif
165}
166
167void ia32_pre_smp_init(void)
168{
169 if (config.cpu_active == 1) {
170#ifdef CONFIG_SMP
171 acpi_init();
172#endif /* CONFIG_SMP */
173 }
174}
175
176void ia32_post_smp_init(void)
177{
178 /* Currently the only supported platform for ia32 is 'pc'. */
179 static const char *platform = "pc";
180
181 sysinfo_set_item_data("platform", NULL, (void *) platform,
182 str_size(platform));
183
184#ifdef CONFIG_PC_KBD
185 /*
186 * Initialize the i8042 controller. Then initialize the keyboard
187 * module and connect it to i8042. Enable keyboard interrupts.
188 */
189 i8042_instance_t *i8042_instance = i8042_init((i8042_t *) I8042_BASE, IRQ_KBD);
190 if (i8042_instance) {
191 kbrd_instance_t *kbrd_instance = kbrd_init();
192 if (kbrd_instance) {
193 indev_t *sink = stdin_wire();
194 indev_t *kbrd = kbrd_wire(kbrd_instance, sink);
195 i8042_wire(i8042_instance, kbrd);
196 trap_virtual_enable_irqs(1 << IRQ_KBD);
197 trap_virtual_enable_irqs(1 << IRQ_MOUSE);
198 }
199 }
200#endif
201
202#if (defined(CONFIG_NS16550) || defined(CONFIG_NS16550_OUT))
203 /*
204 * Initialize the ns16550 controller.
205 */
206#ifdef CONFIG_NS16550_OUT
207 outdev_t *ns16550_out;
208 outdev_t **ns16550_out_ptr = &ns16550_out;
209#else
210 outdev_t **ns16550_out_ptr = NULL;
211#endif
212 ns16550_instance_t *ns16550_instance =
213 ns16550_init(NS16550_BASE, 0, IRQ_NS16550, NULL, NULL,
214 ns16550_out_ptr);
215 if (ns16550_instance) {
216#ifdef CONFIG_NS16550
217 srln_instance_t *srln_instance = srln_init();
218 if (srln_instance) {
219 indev_t *sink = stdin_wire();
220 indev_t *srln = srln_wire(srln_instance, sink);
221 ns16550_wire(ns16550_instance, srln);
222 trap_virtual_enable_irqs(1 << IRQ_NS16550);
223 }
224#endif
225#ifdef CONFIG_NS16550_OUT
226 if (ns16550_out) {
227 stdout_wire(ns16550_out);
228 }
229#endif
230 }
231#endif
232
233 if (irqs_info != NULL)
234 sysinfo_set_item_val(irqs_info, NULL, true);
235}
236
237void calibrate_delay_loop(void)
238{
239 i8254_calibrate_delay_loop();
240 if (config.cpu_active == 1) {
241 /*
242 * This has to be done only on UP.
243 * On SMP, i8254 is not used for time keeping and its interrupt pin remains masked.
244 */
245 i8254_normal_operation();
246 }
247}
248
249/** Construct function pointer
250 *
251 * @param fptr function pointer structure
252 * @param addr function address
253 * @param caller calling function address
254 *
255 * @return address of the function pointer
256 *
257 */
258void *arch_construct_function(fncptr_t *fptr, void *addr, void *caller)
259{
260 return addr;
261}
262
263void arch_reboot(void)
264{
265#ifdef CONFIG_PC_KBD
266 i8042_cpu_reset((i8042_t *) I8042_BASE);
267#endif
268}
269
270void irq_initialize_arch(irq_t *irq)
271{
272 (void) irq;
273}
274
275/** @}
276 */
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