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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.
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 */
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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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#include <arch/types.h>
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#include <config.h>
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1112 palkovsky 41
#include <proc/thread.h>
4055 trochtova 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>
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#include <genarch/drivers/i8042/i8042.h>
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#include <genarch/kbrd/kbrd.h>
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#include <arch/drivers/i8254.h>
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#include <arch/drivers/i8259.h>
4055 trochtova 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>
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#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>
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#include <interrupt.h>
803 palkovsky 63
#include <arch/syscall.h>
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#include <arch/debugger.h>
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#include <syscall/syscall.h>
1474 palkovsky 66
#include <console/console.h>
1958 decky 67
#include <ddi/irq.h>
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#include <ddi/device.h>
4055 trochtova 69
#include <sysinfo/sysinfo.h>
206 palkovsky 70
 
799 palkovsky 71
/** 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
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 */
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static void clean_IOPL_NT_flags(void)
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{
4055 trochtova 77
    asm volatile (
2697 decky 78
        "pushfq\n"
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        "pop %%rax\n"
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        "and $~(0x7000), %%rax\n"
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        "pushq %%rax\n"
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        "popfq\n"
4055 trochtova 83
        ::: "%rax"
799 palkovsky 84
    );
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}
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87
/** Disable alignment check
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 *
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 * Clean AM(18) flag in CR0 register
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 */
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static void clean_AM_flag(void)
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{
4055 trochtova 93
    asm volatile (
2697 decky 94
        "mov %%cr0, %%rax\n"
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        "and $~(0x40000), %%rax\n"
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        "mov %%rax, %%cr0\n"
4055 trochtova 97
        ::: "%rax"
799 palkovsky 98
    );
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}
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4055 trochtova 101
/** Perform amd64-specific initialization before main_bsp() is called.
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 *
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 * @param signature Should contain the multiboot signature.
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 * @param mi        Pointer to the multiboot information structure.
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 */
106
void arch_pre_main(uint32_t signature, const multiboot_info_t *mi)
107
{
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    /* Parse multiboot information obtained from the bootloader. */
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    multiboot_info_parse(signature, mi);
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111
#ifdef CONFIG_SMP
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    /* Copy AP bootstrap routines below 1 MB. */
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    memcpy((void *) AP_BOOT_OFFSET, (void *) BOOT_OFFSET,
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        (size_t) &_hardcoded_unmapped_size);
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#endif
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}
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206 palkovsky 118
void arch_pre_mm_init(void)
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{
2692 decky 120
    /* Enable no-execute pages */
251 palkovsky 121
    set_efer_flag(AMD_NXE_FLAG);
282 palkovsky 122
    /* Enable FPU */
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    cpu_setup_fpu();
803 palkovsky 124
 
799 palkovsky 125
    /* Initialize segmentation */
206 palkovsky 126
    pm_init();
2692 decky 127
 
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    /* Disable I/O on nonprivileged levels
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     * clear the NT (nested-thread) flag
799 palkovsky 130
     */
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    clean_IOPL_NT_flags();
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    /* Disable alignment check */
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    clean_AM_flag();
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206 palkovsky 135
    if (config.cpu_active == 1) {
1958 decky 136
        interrupt_init();
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        bios_init();
1958 decky 138
 
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        /* PIC */
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        i8259_init();
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    }
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}
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2697 decky 144
 
206 palkovsky 145
void arch_post_mm_init(void)
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{
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    if (config.cpu_active == 1) {
1958 decky 148
        /* Initialize IRQ routing */
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        irq_init(IRQ_COUNT, IRQ_COUNT);
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        /* hard clock */
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        i8254_init();
2697 decky 153
 
1289 vana 154
#ifdef CONFIG_FB
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        if (vesa_present())
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            vesa_init();
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        else
1289 vana 158
#endif
4055 trochtova 159
            ega_init(EGA_BASE, EGA_VIDEORAM);   /* video */
1958 decky 160
 
1072 palkovsky 161
        /* Enable debugger */
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        debugger_init();
1303 palkovsky 163
        /* Merge all memory zones to 1 big zone */
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        zone_merge_all();
206 palkovsky 165
    }
2697 decky 166
 
803 palkovsky 167
    /* Setup fast SYSCALL/SYSRET */
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    syscall_setup_cpu();
206 palkovsky 169
}
242 palkovsky 170
 
1901 jermar 171
void arch_post_cpu_init()
172
{
173
#ifdef CONFIG_SMP
174
    if (config.cpu_active > 1) {
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        l_apic_init();
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        l_apic_debug();
177
    }
178
#endif
179
}
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503 jermar 181
void arch_pre_smp_init(void)
242 palkovsky 182
{
183
    if (config.cpu_active == 1) {
2723 decky 184
#ifdef CONFIG_SMP
242 palkovsky 185
        acpi_init();
2723 decky 186
#endif /* CONFIG_SMP */
242 palkovsky 187
    }
188
}
189
 
503 jermar 190
void arch_post_smp_init(void)
191
{
4055 trochtova 192
    devno_t devno = device_assign_devno();
193
 
194
        /*
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     * Initialize the keyboard module and conect it to stdin. Then
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     * initialize the i8042 controller and connect it to kbrdin. Enable
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     * keyboard interrupts.
198
         */
199
    kbrd_init(stdin);
200
    (void) i8042_init((i8042_t *) I8042_BASE, devno, IRQ_KBD, &kbrdin);
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    trap_virtual_enable_irqs(1 << IRQ_KBD);
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203
    /*
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     * This is the necessary evil until the userspace driver is entirely
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     * self-sufficient.
206
     */
207
    sysinfo_set_item_val("kbd", NULL, true);
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    sysinfo_set_item_val("kbd.devno", NULL, devno);
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    sysinfo_set_item_val("kbd.inr", NULL, IRQ_KBD);
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    sysinfo_set_item_val("kbd.address.physical", NULL,
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        (uintptr_t) I8042_BASE);
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    sysinfo_set_item_val("kbd.address.kernel", NULL,
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        (uintptr_t) I8042_BASE);
503 jermar 214
}
215
 
242 palkovsky 216
void calibrate_delay_loop(void)
217
{
218
    i8254_calibrate_delay_loop();
1958 decky 219
    if (config.cpu_active == 1) {
220
        /*
221
         * This has to be done only on UP.
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         * On SMP, i8254 is not used for time keeping and its interrupt pin remains masked.
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         */
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        i8254_normal_operation();
225
    }
242 palkovsky 226
}
1112 palkovsky 227
 
1121 jermar 228
/** Set thread-local-storage pointer
1112 palkovsky 229
 *
230
 * TLS pointer is set in FS register. Unfortunately the 64-bit
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 * part can be set only in CPL0 mode.
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 *
1121 jermar 233
 * The specs say, that on %fs:0 there is stored contents of %fs register,
1112 palkovsky 234
 * we need not to go to CPL0 to read it.
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 */
1780 jermar 236
unative_t sys_tls_set(unative_t addr)
1112 palkovsky 237
{
1184 jermar 238
    THREAD->arch.tls = addr;
1112 palkovsky 239
    write_msr(AMD_MSR_FS, addr);
240
    return 0;
241
}
1474 palkovsky 242
 
243
/** Acquire console back for kernel
244
 *
245
 */
246
void arch_grab_console(void)
247
{
4055 trochtova 248
#ifdef CONFIG_FB
249
    vesa_redraw();
250
#else
251
    ega_redraw();
252
#endif
1474 palkovsky 253
}
4055 trochtova 254
 
1474 palkovsky 255
/** Return console to userspace
256
 *
257
 */
258
void arch_release_console(void)
259
{
260
}
1702 cejka 261
 
4055 trochtova 262
/** Construct function pointer
263
 *
264
 * @param fptr   function pointer structure
265
 * @param addr   function address
266
 * @param caller calling function address
267
 *
268
 * @return address of the function pointer
269
 *
270
 */
271
void *arch_construct_function(fncptr_t *fptr, void *addr, void *caller)
272
{
273
    return addr;
274
}
275
 
1842 jermar 276
/** @}
1702 cejka 277
 */