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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
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 * @{
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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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#include <proc/thread.h>
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#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/kbd/i8042.h>
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#include <arch/drivers/i8254.h>
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#include <arch/drivers/i8259.h>
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#include <arch/boot/boot.h>
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1901 jermar 51
#ifdef CONFIG_SMP
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#include <arch/smp/apic.h>
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#endif
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206 palkovsky 55
#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 59
#include <genarch/acpi/acpi.h>
282 palkovsky 60
#include <panic.h>
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#include <interrupt.h>
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#include <arch/syscall.h>
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#include <arch/debugger.h>
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#include <syscall/syscall.h>
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#include <console/console.h>
1958 decky 66
#include <ddi/irq.h>
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#include <ddi/device.h>
3982 jermar 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
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 */
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static void clean_IOPL_NT_flags(void)
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{
4017 decky 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"
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        "popfq\n"
4017 decky 82
        ::: "%rax"
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    );
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}
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86
/** 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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{
4017 decky 92
    asm volatile (
2697 decky 93
        "mov %%cr0, %%rax\n"
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        "and $~(0x40000), %%rax\n"
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        "mov %%rax, %%cr0\n"
4017 decky 96
        ::: "%rax"
799 palkovsky 97
    );
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}
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4022 svoboda 100
/** 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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 */
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void arch_pre_main(uint32_t signature, const multiboot_info_t *mi)
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{
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    /* Parse multiboot information obtained from the bootloader. */
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    multiboot_info_parse(signature, mi);
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#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 117
void arch_pre_mm_init(void)
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{
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    /* Enable no-execute pages */
251 palkovsky 120
    set_efer_flag(AMD_NXE_FLAG);
282 palkovsky 121
    /* Enable FPU */
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    cpu_setup_fpu();
803 palkovsky 123
 
799 palkovsky 124
    /* Initialize segmentation */
206 palkovsky 125
    pm_init();
2692 decky 126
 
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    /* Disable I/O on nonprivileged levels
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     * clear the NT (nested-thread) flag
799 palkovsky 129
     */
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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 134
    if (config.cpu_active == 1) {
1958 decky 135
        interrupt_init();
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        bios_init();
1958 decky 137
 
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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 143
 
206 palkovsky 144
void arch_post_mm_init(void)
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{
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    if (config.cpu_active == 1) {
1958 decky 147
        /* 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 152
 
1289 vana 153
#ifdef CONFIG_FB
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        if (vesa_present())
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            vesa_init();
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        else
1289 vana 157
#endif
3779 jermar 158
            ega_init(EGA_BASE, EGA_VIDEORAM);   /* video */
1958 decky 159
 
1072 palkovsky 160
        /* Enable debugger */
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        debugger_init();
1303 palkovsky 162
        /* Merge all memory zones to 1 big zone */
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        zone_merge_all();
206 palkovsky 164
    }
2697 decky 165
 
803 palkovsky 166
    /* Setup fast SYSCALL/SYSRET */
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    syscall_setup_cpu();
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}
242 palkovsky 169
 
1901 jermar 170
void arch_post_cpu_init()
171
{
172
#ifdef CONFIG_SMP
173
    if (config.cpu_active > 1) {
174
        l_apic_init();
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        l_apic_debug();
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    }
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#endif
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}
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503 jermar 180
void arch_pre_smp_init(void)
242 palkovsky 181
{
182
    if (config.cpu_active == 1) {
2723 decky 183
#ifdef CONFIG_SMP
242 palkovsky 184
        acpi_init();
2723 decky 185
#endif /* CONFIG_SMP */
242 palkovsky 186
    }
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}
188
 
503 jermar 189
void arch_post_smp_init(void)
190
{
3982 jermar 191
    devno_t devno = device_assign_devno();
1958 decky 192
    /* keyboard controller */
3982 jermar 193
    (void) i8042_init((i8042_t *) I8042_BASE, devno, IRQ_KBD);
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195
    /*
196
     * This is the necessary evil until the userspace driver is entirely
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     * self-sufficient.
198
     */
199
    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);
503 jermar 202
}
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242 palkovsky 204
void calibrate_delay_loop(void)
205
{
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    i8254_calibrate_delay_loop();
1958 decky 207
    if (config.cpu_active == 1) {
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        /*
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         * 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();
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    }
242 palkovsky 214
}
1112 palkovsky 215
 
1121 jermar 216
/** Set thread-local-storage pointer
1112 palkovsky 217
 *
218
 * 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 221
 * The specs say, that on %fs:0 there is stored contents of %fs register,
1112 palkovsky 222
 * we need not to go to CPL0 to read it.
223
 */
1780 jermar 224
unative_t sys_tls_set(unative_t addr)
1112 palkovsky 225
{
1184 jermar 226
    THREAD->arch.tls = addr;
1112 palkovsky 227
    write_msr(AMD_MSR_FS, addr);
228
    return 0;
229
}
1474 palkovsky 230
 
231
/** Acquire console back for kernel
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 *
233
 */
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void arch_grab_console(void)
235
{
3762 decky 236
#ifdef CONFIG_FB
237
    vesa_redraw();
238
#else
239
    ega_redraw();
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#endif
1474 palkovsky 241
}
3706 decky 242
 
1474 palkovsky 243
/** Return console to userspace
244
 *
245
 */
246
void arch_release_console(void)
247
{
248
}
1702 cejka 249
 
3880 decky 250
/** Construct function pointer
251
 *
252
 * @param fptr   function pointer structure
253
 * @param addr   function address
254
 * @param caller calling function address
255
 *
256
 * @return address of the function pointer
257
 *
258
 */
259
void *arch_construct_function(fncptr_t *fptr, void *addr, void *caller)
260
{
261
    return addr;
262
}
263
 
1842 jermar 264
/** @}
1702 cejka 265
 */