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206 palkovsky 1
/*
2071 jermar 2
 * Copyright (c) 2005 Ondrej Palkovsky
206 palkovsky 3
 * All rights reserved.
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
 *
9
 * - Redistributions of source code must retain the above copyright
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 *   notice, this list of conditions and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright
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 *   notice, this list of conditions and the following disclaimer in the
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 *   documentation and/or other materials provided with the distribution.
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 * - The name of the author may not be used to endorse or promote products
15
 *   derived from this software without specific prior written permission.
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 *
17
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
 */
28
 
1842 jermar 29
/** @addtogroup amd64
1702 cejka 30
 * @{
31
 */
32
/** @file
33
 */
34
 
206 palkovsky 35
#include <arch.h>
36
 
37
#include <arch/types.h>
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39
#include <config.h>
40
 
1112 palkovsky 41
#include <proc/thread.h>
4022 svoboda 42
#include <genarch/multiboot/multiboot.h>
3932 jermar 43
#include <genarch/drivers/legacy/ia32/io.h>
3779 jermar 44
#include <genarch/drivers/ega/ega.h>
1477 decky 45
#include <arch/drivers/vesa.h>
4042 jermar 46
#include <genarch/drivers/i8042/i8042.h>
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#include <genarch/kbrd/kbrd.h>
1477 decky 48
#include <arch/drivers/i8254.h>
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#include <arch/drivers/i8259.h>
4022 svoboda 50
#include <arch/boot/boot.h>
206 palkovsky 51
 
1901 jermar 52
#ifdef CONFIG_SMP
53
#include <arch/smp/apic.h>
54
#endif
55
 
206 palkovsky 56
#include <arch/bios/bios.h>
251 palkovsky 57
#include <arch/cpu.h>
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#include <print.h>
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#include <arch/cpuid.h>
452 decky 60
#include <genarch/acpi/acpi.h>
282 palkovsky 61
#include <panic.h>
576 palkovsky 62
#include <interrupt.h>
803 palkovsky 63
#include <arch/syscall.h>
1072 palkovsky 64
#include <arch/debugger.h>
1112 palkovsky 65
#include <syscall/syscall.h>
1474 palkovsky 66
#include <console/console.h>
1958 decky 67
#include <ddi/irq.h>
3982 jermar 68
#include <sysinfo/sysinfo.h>
206 palkovsky 69
 
799 palkovsky 70
/** Disable I/O on non-privileged levels
71
 *
72
 * Clean IOPL(12,13) and NT(14) flags in EFLAGS register
73
 */
74
static void clean_IOPL_NT_flags(void)
75
{
4017 decky 76
	asm volatile (
2697 decky 77
		"pushfq\n"
78
		"pop %%rax\n"
79
		"and $~(0x7000), %%rax\n"
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		"pushq %%rax\n"
81
		"popfq\n"
4017 decky 82
		::: "%rax"
799 palkovsky 83
	);
84
}
85
 
86
/** Disable alignment check
87
 *
88
 * Clean AM(18) flag in CR0 register 
89
 */
90
static void clean_AM_flag(void)
91
{
4017 decky 92
	asm volatile (
2697 decky 93
		"mov %%cr0, %%rax\n"
94
		"and $~(0x40000), %%rax\n"
95
		"mov %%rax, %%cr0\n"
4017 decky 96
		::: "%rax"
799 palkovsky 97
	);
98
}
99
 
4022 svoboda 100
/** Perform amd64-specific initialization before main_bsp() is called.
101
 *
102
 * @param signature Should contain the multiboot signature.
103
 * @param mi        Pointer to the multiboot information structure.
104
 */
105
void arch_pre_main(uint32_t signature, const multiboot_info_t *mi)
106
{
107
	/* Parse multiboot information obtained from the bootloader. */
108
	multiboot_info_parse(signature, mi);
109
 
110
#ifdef CONFIG_SMP
111
	/* Copy AP bootstrap routines below 1 MB. */
112
	memcpy((void *) AP_BOOT_OFFSET, (void *) BOOT_OFFSET,
113
	    (size_t) &_hardcoded_unmapped_size);
114
#endif
115
}
116
 
206 palkovsky 117
void arch_pre_mm_init(void)
118
{
2692 decky 119
	/* Enable no-execute pages */
251 palkovsky 120
	set_efer_flag(AMD_NXE_FLAG);
282 palkovsky 121
	/* Enable FPU */
122
	cpu_setup_fpu();
803 palkovsky 123
 
799 palkovsky 124
	/* Initialize segmentation */
206 palkovsky 125
	pm_init();
2692 decky 126
 
127
	/* Disable I/O on nonprivileged levels
128
	 * clear the NT (nested-thread) flag 
799 palkovsky 129
	 */
130
	clean_IOPL_NT_flags();
131
	/* Disable alignment check */
132
	clean_AM_flag();
133
 
206 palkovsky 134
	if (config.cpu_active == 1) {
1958 decky 135
		interrupt_init();
206 palkovsky 136
		bios_init();
1958 decky 137
 
138
		/* PIC */
139
		i8259_init();
206 palkovsky 140
	}
141
}
142
 
2697 decky 143
 
206 palkovsky 144
void arch_post_mm_init(void)
145
{
146
	if (config.cpu_active == 1) {
1958 decky 147
		/* Initialize IRQ routing */
148
		irq_init(IRQ_COUNT, IRQ_COUNT);
149
 
150
		/* hard clock */
151
		i8254_init();
4057 decky 152
 
1289 vana 153
#ifdef CONFIG_FB
1303 palkovsky 154
		if (vesa_present()) 
155
			vesa_init();
156
		else
1289 vana 157
#endif
4057 decky 158
#ifdef CONFIG_EGA
159
			ega_init(EGA_BASE, EGA_VIDEORAM);  /* video */
160
#else
161
			{}
162
#endif
1958 decky 163
 
1072 palkovsky 164
		/* Enable debugger */
165
		debugger_init();
1303 palkovsky 166
		/* Merge all memory zones to 1 big zone */
167
		zone_merge_all();
206 palkovsky 168
	}
2697 decky 169
 
803 palkovsky 170
	/* Setup fast SYSCALL/SYSRET */
171
	syscall_setup_cpu();
206 palkovsky 172
}
242 palkovsky 173
 
1901 jermar 174
void arch_post_cpu_init()
175
{
176
#ifdef CONFIG_SMP
177
	if (config.cpu_active > 1) {
178
		l_apic_init();
179
		l_apic_debug();
180
	}
181
#endif
182
}
183
 
503 jermar 184
void arch_pre_smp_init(void)
242 palkovsky 185
{
186
	if (config.cpu_active == 1) {
2723 decky 187
#ifdef CONFIG_SMP
242 palkovsky 188
		acpi_init();
2723 decky 189
#endif /* CONFIG_SMP */
242 palkovsky 190
	}
191
}
192
 
503 jermar 193
void arch_post_smp_init(void)
194
{
4102 decky 195
#ifdef CONFIG_PC_KBD
3982 jermar 196
	/*
4102 decky 197
	 * Initialize the i8042 controller. Then initialize the keyboard
198
	 * module and connect it to i8042. Enable keyboard interrupts.
199
	 */
4311 decky 200
	i8042_instance_t *i8042_instance = i8042_init((i8042_t *) I8042_BASE, IRQ_KBD);
201
	if (i8042_instance) {
202
		kbrd_instance_t *kbrd_instance = kbrd_init();
203
		if (kbrd_instance) {
204
			indev_t *sink = stdin_wire();
205
			indev_t *kbrd = kbrd_wire(kbrd_instance, sink);
206
			i8042_wire(i8042_instance, kbrd);
207
			trap_virtual_enable_irqs(1 << IRQ_KBD);
208
		}
4102 decky 209
	}
210
 
211
	/*
3982 jermar 212
	 * This is the necessary evil until the userspace driver is entirely
213
	 * self-sufficient.
214
	 */
215
	sysinfo_set_item_val("kbd", NULL, true);
216
	sysinfo_set_item_val("kbd.inr", NULL, IRQ_KBD);
4026 jermar 217
	sysinfo_set_item_val("kbd.address.physical", NULL,
218
	    (uintptr_t) I8042_BASE);
219
	sysinfo_set_item_val("kbd.address.kernel", NULL,
220
	    (uintptr_t) I8042_BASE);
4102 decky 221
#endif
503 jermar 222
}
223
 
242 palkovsky 224
void calibrate_delay_loop(void)
225
{
226
	i8254_calibrate_delay_loop();
1958 decky 227
	if (config.cpu_active == 1) {
228
		/*
229
		 * This has to be done only on UP.
230
		 * On SMP, i8254 is not used for time keeping and its interrupt pin remains masked.
231
		 */
232
		i8254_normal_operation();
233
	}
242 palkovsky 234
}
1112 palkovsky 235
 
1121 jermar 236
/** Set thread-local-storage pointer
1112 palkovsky 237
 *
238
 * TLS pointer is set in FS register. Unfortunately the 64-bit
239
 * part can be set only in CPL0 mode.
240
 *
1121 jermar 241
 * The specs say, that on %fs:0 there is stored contents of %fs register,
1112 palkovsky 242
 * we need not to go to CPL0 to read it.
243
 */
1780 jermar 244
unative_t sys_tls_set(unative_t addr)
1112 palkovsky 245
{
1184 jermar 246
	THREAD->arch.tls = addr;
1112 palkovsky 247
	write_msr(AMD_MSR_FS, addr);
248
	return 0;
249
}
1474 palkovsky 250
 
251
/** Acquire console back for kernel
252
 *
253
 */
254
void arch_grab_console(void)
255
{
3762 decky 256
#ifdef CONFIG_FB
4102 decky 257
	if (vesa_present())
258
		vesa_redraw();
259
	else
260
#endif
261
#ifdef CONFIG_EGA
262
		ega_redraw();
3762 decky 263
#else
4102 decky 264
		{}
3762 decky 265
#endif
1474 palkovsky 266
}
3706 decky 267
 
1474 palkovsky 268
/** Return console to userspace
269
 *
270
 */
271
void arch_release_console(void)
272
{
273
}
1702 cejka 274
 
3880 decky 275
/** Construct function pointer
276
 *
277
 * @param fptr   function pointer structure
278
 * @param addr   function address
279
 * @param caller calling function address
280
 *
281
 * @return address of the function pointer
282
 *
283
 */
284
void *arch_construct_function(fncptr_t *fptr, void *addr, void *caller)
285
{
286
	return addr;
287
}
288
 
4251 decky 289
void arch_reboot(void)
290
{
291
#ifdef CONFIG_PC_KBD
292
	i8042_cpu_reset((i8042_t *) I8042_BASE);
293
#endif
294
}
295
 
1842 jermar 296
/** @}
1702 cejka 297
 */