source: mainline/kernel/arch/ia32/src/ia32.c@ dcd8214

topic/msim-upgrade topic/simplify-dev-export
Last change on this file since dcd8214 was b169619, checked in by Jiří Zárevúcky <zarevucky.jiri@…>, 2 years ago

Deduplicate mem functions

There are a number of functions which are copied between
kernel, libc, and potentially boot too. mem*() functions
are first such offenders. All this duplicate code will
be moved to directory 'common'.
  • Property mode set to 100644
File size: 6.8 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 <memw.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 <genarch/pic/pic_ops.h>
61#include <arch/pm.h>
62#include <arch/vreg.h>
63
64#ifdef CONFIG_SMP
65#include <arch/smp/apic.h>
66#endif
67
68static void ia32_pre_mm_init(void);
69static void ia32_post_mm_init(void);
70static void ia32_post_cpu_init(void);
71static void ia32_pre_smp_init(void);
72static void ia32_post_smp_init(void);
73
74arch_ops_t ia32_ops = {
75 .pre_mm_init = ia32_pre_mm_init,
76 .post_mm_init = ia32_post_mm_init,
77 .post_cpu_init = ia32_post_cpu_init,
78 .pre_smp_init = ia32_pre_smp_init,
79 .post_smp_init = ia32_post_smp_init,
80};
81
82arch_ops_t *arch_ops = &ia32_ops;
83
84/** Perform ia32-specific initialization before main_bsp() is called.
85 *
86 * @param signature Multiboot signature.
87 * @param info Multiboot information structure.
88 *
89 */
90void ia32_pre_main(uint32_t signature, void *info)
91{
92 /* Parse multiboot information obtained from the bootloader. */
93 multiboot_info_parse(signature, (multiboot_info_t *) info);
94 multiboot2_info_parse(signature, (multiboot2_info_t *) info);
95
96#ifdef CONFIG_SMP
97 size_t unmapped_size = (uintptr_t) unmapped_end - BOOT_OFFSET;
98 /* Copy AP bootstrap routines below 1 MB. */
99 memcpy((void *) AP_BOOT_OFFSET, (void *) BOOT_OFFSET, unmapped_size);
100#endif
101}
102
103void ia32_pre_mm_init(void)
104{
105 pm_init();
106
107 if (config.cpu_active == 1) {
108 interrupt_init();
109 bios_init();
110
111 /* PIC */
112 i8259_init((i8259_t *) I8259_PIC0_BASE,
113 (i8259_t *) I8259_PIC1_BASE, IVT_IRQBASE);
114
115 /* Set PIC operations. */
116 pic_ops = &i8259_pic_ops;
117 }
118}
119
120void ia32_post_mm_init(void)
121{
122 vreg_init();
123
124 if (config.cpu_active == 1) {
125 /* Initialize IRQ routing */
126 irq_init(IRQ_COUNT, IRQ_COUNT);
127
128 /* hard clock */
129 i8254_init();
130
131#if (defined(CONFIG_FB) || defined(CONFIG_EGA))
132 bool bfb = false;
133#endif
134
135#ifdef CONFIG_FB
136 bfb = bfb_init();
137#endif
138
139#ifdef CONFIG_EGA
140 if (!bfb) {
141 outdev_t *egadev = ega_init(EGA_BASE, EGA_VIDEORAM);
142 if (egadev)
143 stdout_wire(egadev);
144 }
145#endif
146
147 /* Merge all memory zones to 1 big zone */
148 zone_merge_all();
149 }
150}
151
152void ia32_post_cpu_init(void)
153{
154#ifdef CONFIG_SMP
155 if (config.cpu_active > 1) {
156 l_apic_init();
157 l_apic_debug();
158 }
159#endif
160}
161
162void ia32_pre_smp_init(void)
163{
164 if (config.cpu_active == 1) {
165#ifdef CONFIG_SMP
166 acpi_init();
167#endif /* CONFIG_SMP */
168 }
169}
170
171void ia32_post_smp_init(void)
172{
173 /* Currently the only supported platform for ia32 is 'pc'. */
174 static const char *platform = "pc";
175
176 sysinfo_set_item_data("platform", NULL, (void *) platform,
177 str_size(platform));
178
179#ifdef CONFIG_PC_KBD
180 /*
181 * Initialize the i8042 controller. Then initialize the keyboard
182 * module and connect it to i8042. Enable keyboard interrupts.
183 */
184 i8042_instance_t *i8042_instance = i8042_init((i8042_t *) I8042_BASE, IRQ_KBD);
185 if (i8042_instance) {
186 kbrd_instance_t *kbrd_instance = kbrd_init();
187 if (kbrd_instance) {
188 indev_t *sink = stdin_wire();
189 indev_t *kbrd = kbrd_wire(kbrd_instance, sink);
190 i8042_wire(i8042_instance, kbrd);
191 pic_ops->enable_irqs(1 << IRQ_KBD);
192 pic_ops->enable_irqs(1 << IRQ_MOUSE);
193 }
194 }
195#endif
196
197#if (defined(CONFIG_NS16550) || defined(CONFIG_NS16550_OUT))
198 /*
199 * Initialize the ns16550 controller.
200 */
201#ifdef CONFIG_NS16550_OUT
202 outdev_t *ns16550_out;
203 outdev_t **ns16550_out_ptr = &ns16550_out;
204#else
205 outdev_t **ns16550_out_ptr = NULL;
206#endif
207 ns16550_instance_t *ns16550_instance =
208 ns16550_init(NS16550_BASE, 0, IRQ_NS16550, NULL, NULL,
209 ns16550_out_ptr);
210 if (ns16550_instance) {
211 ns16550_format_set(ns16550_instance, 38400,
212 LCR_PARITY_NONE | LCR_STOP_BIT_TWO | LCR_WORD_LEN_8);
213#ifdef CONFIG_NS16550
214 srln_instance_t *srln_instance = srln_init();
215 if (srln_instance) {
216 indev_t *sink = stdin_wire();
217 indev_t *srln = srln_wire(srln_instance, sink);
218 ns16550_wire(ns16550_instance, srln);
219 pic_ops->enable_irqs(1 << IRQ_NS16550);
220 }
221#endif
222#ifdef CONFIG_NS16550_OUT
223 if (ns16550_out) {
224 stdout_wire(ns16550_out);
225 }
226#endif
227 }
228#endif
229
230 sysinfo_set_item_val(pic_ops->get_name(), NULL, true);
231}
232
233void calibrate_delay_loop(void)
234{
235 i8254_calibrate_delay_loop();
236 if (config.cpu_active == 1) {
237 /*
238 * This has to be done only on UP.
239 * On SMP, i8254 is not used for time keeping and its interrupt pin remains masked.
240 */
241 i8254_normal_operation();
242 }
243}
244
245/** Construct function pointer
246 *
247 * @param fptr function pointer structure
248 * @param addr function address
249 * @param caller calling function address
250 *
251 * @return address of the function pointer
252 *
253 */
254void *arch_construct_function(fncptr_t *fptr, void *addr, void *caller)
255{
256 return addr;
257}
258
259void arch_reboot(void)
260{
261#ifdef CONFIG_PC_KBD
262 i8042_cpu_reset((i8042_t *) I8042_BASE);
263#endif
264}
265
266void irq_initialize_arch(irq_t *irq)
267{
268 (void) irq;
269}
270
271/** @}
272 */
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