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206 palkovsky 1
/*
2071 jermar 2
 * Copyright (c) 2005 Ondrej Palkovsky
206 palkovsky 3
 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * - 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
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 *   derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * 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
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
 */
28
 
1842 jermar 29
/** @addtogroup amd64
1702 cejka 30
 * @{
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 */
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/** @file
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 */
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206 palkovsky 35
#include <arch.h>
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37
#include <arch/types.h>
38
 
39
#include <config.h>
40
 
1112 palkovsky 41
#include <proc/thread.h>
4153 mejdrech 42
#include <genarch/multiboot/multiboot.h>
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#include <genarch/drivers/legacy/ia32/io.h>
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#include <genarch/drivers/ega/ega.h>
1477 decky 45
#include <arch/drivers/vesa.h>
4153 mejdrech 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>
4153 mejdrech 50
#include <arch/boot/boot.h>
206 palkovsky 51
 
1901 jermar 52
#ifdef CONFIG_SMP
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#include <arch/smp/apic.h>
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#endif
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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>
4153 mejdrech 68
#include <sysinfo/sysinfo.h>
206 palkovsky 69
 
799 palkovsky 70
/** Disable I/O on non-privileged levels
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 *
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 * Clean IOPL(12,13) and NT(14) flags in EFLAGS register
73
 */
74
static void clean_IOPL_NT_flags(void)
75
{
4153 mejdrech 76
    asm volatile (
2697 decky 77
        "pushfq\n"
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        "pop %%rax\n"
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        "and $~(0x7000), %%rax\n"
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        "pushq %%rax\n"
81
        "popfq\n"
4153 mejdrech 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
{
4153 mejdrech 92
    asm volatile (
2697 decky 93
        "mov %%cr0, %%rax\n"
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        "and $~(0x40000), %%rax\n"
95
        "mov %%rax, %%cr0\n"
4153 mejdrech 96
        ::: "%rax"
799 palkovsky 97
    );
98
}
99
 
4153 mejdrech 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();
4153 mejdrech 152
 
1289 vana 153
#ifdef CONFIG_FB
1303 palkovsky 154
        if (vesa_present())
155
            vesa_init();
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        else
1289 vana 157
#endif
4153 mejdrech 158
#ifdef CONFIG_EGA
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            ega_init(EGA_BASE, EGA_VIDEORAM);  /* video */
160
#else
161
            {}
162
#endif
1958 decky 163
 
1072 palkovsky 164
        /* Enable debugger */
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        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
{
4153 mejdrech 195
#ifdef CONFIG_PC_KBD
196
    /*
197
     * Initialize the i8042 controller. Then initialize the keyboard
198
     * module and connect it to i8042. Enable keyboard interrupts.
199
     */
4327 mejdrech 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
        }
4153 mejdrech 209
    }
210
 
211
    /*
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);
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);
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
{
4153 mejdrech 256
#ifdef CONFIG_FB
257
    if (vesa_present())
258
        vesa_redraw();
259
    else
260
#endif
261
#ifdef CONFIG_EGA
262
        ega_redraw();
263
#else
264
        {}
265
#endif
1474 palkovsky 266
}
4153 mejdrech 267
 
1474 palkovsky 268
/** Return console to userspace
269
 *
270
 */
271
void arch_release_console(void)
272
{
273
}
1702 cejka 274
 
4153 mejdrech 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
 
4263 mejdrech 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
 */