Subversion Repositories HelenOS

Rev

Rev 2725 | Rev 4153 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
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
10
 *   notice, this list of conditions and the following disclaimer.
11
 * - Redistributions in binary form must reproduce the above copyright
12
 *   notice, this list of conditions and the following disclaimer in the
13
 *   documentation and/or other materials provided with the distribution.
14
 * - The name of the author may not be used to endorse or promote products
15
 *   derived from this software without specific prior written permission.
16
 *
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
24
 * 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>
38
 
39
#include <config.h>
40
 
1112 palkovsky 41
#include <proc/thread.h>
1473 decky 42
#include <arch/drivers/ega.h>
1477 decky 43
#include <arch/drivers/vesa.h>
1842 jermar 44
#include <genarch/kbd/i8042.h>
1477 decky 45
#include <arch/drivers/i8254.h>
46
#include <arch/drivers/i8259.h>
206 palkovsky 47
 
1901 jermar 48
#ifdef CONFIG_SMP
49
#include <arch/smp/apic.h>
50
#endif
51
 
206 palkovsky 52
#include <arch/bios/bios.h>
251 palkovsky 53
#include <arch/cpu.h>
54
#include <print.h>
55
#include <arch/cpuid.h>
452 decky 56
#include <genarch/acpi/acpi.h>
282 palkovsky 57
#include <panic.h>
576 palkovsky 58
#include <interrupt.h>
803 palkovsky 59
#include <arch/syscall.h>
1072 palkovsky 60
#include <arch/debugger.h>
1112 palkovsky 61
#include <syscall/syscall.h>
1474 palkovsky 62
#include <console/console.h>
1958 decky 63
#include <ddi/irq.h>
64
#include <ddi/device.h>
206 palkovsky 65
 
1112 palkovsky 66
 
799 palkovsky 67
/** Disable I/O on non-privileged levels
68
 *
69
 * Clean IOPL(12,13) and NT(14) flags in EFLAGS register
70
 */
71
static void clean_IOPL_NT_flags(void)
72
{
2697 decky 73
    asm (
74
        "pushfq\n"
75
        "pop %%rax\n"
76
        "and $~(0x7000), %%rax\n"
77
        "pushq %%rax\n"
78
        "popfq\n"
799 palkovsky 79
        :
80
        :
2697 decky 81
        : "%rax"
799 palkovsky 82
    );
83
}
84
 
85
/** Disable alignment check
86
 *
87
 * Clean AM(18) flag in CR0 register
88
 */
89
static void clean_AM_flag(void)
90
{
2697 decky 91
    asm (
92
        "mov %%cr0, %%rax\n"
93
        "and $~(0x40000), %%rax\n"
94
        "mov %%rax, %%cr0\n"
799 palkovsky 95
        :
96
        :
2697 decky 97
        : "%rax"
799 palkovsky 98
    );
99
}
100
 
206 palkovsky 101
void arch_pre_mm_init(void)
102
{
2692 decky 103
    /* Enable no-execute pages */
251 palkovsky 104
    set_efer_flag(AMD_NXE_FLAG);
282 palkovsky 105
    /* Enable FPU */
106
    cpu_setup_fpu();
803 palkovsky 107
 
799 palkovsky 108
    /* Initialize segmentation */
206 palkovsky 109
    pm_init();
2692 decky 110
 
111
    /* Disable I/O on nonprivileged levels
112
     * clear the NT (nested-thread) flag
799 palkovsky 113
     */
114
    clean_IOPL_NT_flags();
115
    /* Disable alignment check */
116
    clean_AM_flag();
117
 
206 palkovsky 118
    if (config.cpu_active == 1) {
1958 decky 119
        interrupt_init();
206 palkovsky 120
        bios_init();
1958 decky 121
 
122
        /* PIC */
123
        i8259_init();
206 palkovsky 124
    }
125
}
126
 
2697 decky 127
 
206 palkovsky 128
void arch_post_mm_init(void)
129
{
130
    if (config.cpu_active == 1) {
1958 decky 131
        /* Initialize IRQ routing */
132
        irq_init(IRQ_COUNT, IRQ_COUNT);
133
 
134
        /* hard clock */
135
        i8254_init();
2697 decky 136
 
1289 vana 137
#ifdef CONFIG_FB
1303 palkovsky 138
        if (vesa_present())
139
            vesa_init();
140
        else
1289 vana 141
#endif
1303 palkovsky 142
            ega_init(); /* video */
1958 decky 143
 
1072 palkovsky 144
        /* Enable debugger */
145
        debugger_init();
1303 palkovsky 146
        /* Merge all memory zones to 1 big zone */
147
        zone_merge_all();
206 palkovsky 148
    }
2697 decky 149
 
803 palkovsky 150
    /* Setup fast SYSCALL/SYSRET */
151
    syscall_setup_cpu();
206 palkovsky 152
}
242 palkovsky 153
 
1901 jermar 154
void arch_post_cpu_init()
155
{
156
#ifdef CONFIG_SMP
157
    if (config.cpu_active > 1) {
158
        l_apic_init();
159
        l_apic_debug();
160
    }
161
#endif
162
}
163
 
503 jermar 164
void arch_pre_smp_init(void)
242 palkovsky 165
{
166
    if (config.cpu_active == 1) {
2723 decky 167
#ifdef CONFIG_SMP
242 palkovsky 168
        acpi_init();
2723 decky 169
#endif /* CONFIG_SMP */
242 palkovsky 170
    }
171
}
172
 
503 jermar 173
void arch_post_smp_init(void)
174
{
1958 decky 175
    /* keyboard controller */
176
    i8042_init(device_assign_devno(), IRQ_KBD, device_assign_devno(), IRQ_MOUSE);
503 jermar 177
}
178
 
242 palkovsky 179
void calibrate_delay_loop(void)
180
{
181
    i8254_calibrate_delay_loop();
1958 decky 182
    if (config.cpu_active == 1) {
183
        /*
184
         * This has to be done only on UP.
185
         * On SMP, i8254 is not used for time keeping and its interrupt pin remains masked.
186
         */
187
        i8254_normal_operation();
188
    }
242 palkovsky 189
}
1112 palkovsky 190
 
1121 jermar 191
/** Set thread-local-storage pointer
1112 palkovsky 192
 *
193
 * TLS pointer is set in FS register. Unfortunately the 64-bit
194
 * part can be set only in CPL0 mode.
195
 *
1121 jermar 196
 * The specs say, that on %fs:0 there is stored contents of %fs register,
1112 palkovsky 197
 * we need not to go to CPL0 to read it.
198
 */
1780 jermar 199
unative_t sys_tls_set(unative_t addr)
1112 palkovsky 200
{
1184 jermar 201
    THREAD->arch.tls = addr;
1112 palkovsky 202
    write_msr(AMD_MSR_FS, addr);
203
    return 0;
204
}
1474 palkovsky 205
 
206
/** Acquire console back for kernel
207
 *
208
 */
209
void arch_grab_console(void)
210
{
211
    i8042_grab();
212
}
213
/** Return console to userspace
214
 *
215
 */
216
void arch_release_console(void)
217
{
218
    i8042_release();
219
}
1702 cejka 220
 
1842 jermar 221
/** @}
1702 cejka 222
 */