kernel/arch/amd64/src/amd64.c

   1 /*
   2  * Copyright (c) 2005 Ondrej 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
  29 /** @addtogroup kernel_amd64
  30  * @{
  31  */
  32 /** @file
  33  */
  34
  35 #include <arch.h>
  36 #include <arch/arch.h>
  37 #include <stdint.h>
  38 #include <errno.h>
  39 #include <mem.h>
  40 #include <interrupt.h>
  41 #include <console/console.h>
  42 #include <syscall/syscall.h>
  43 #include <sysinfo/sysinfo.h>
  44 #include <arch/bios/bios.h>
  45 #include <arch/boot/boot.h>
  46 #include <arch/drivers/i8254.h>
  47 #include <arch/syscall.h>
  48 #include <genarch/acpi/acpi.h>
  49 #include <genarch/drivers/ega/ega.h>
  50 #include <genarch/drivers/i8042/i8042.h>
  51 #include <genarch/drivers/i8259/i8259.h>
  52 #include <genarch/drivers/ns16550/ns16550.h>
  53 #include <genarch/drivers/legacy/ia32/io.h>
  54 #include <genarch/fb/bfb.h>
  55 #include <genarch/kbrd/kbrd.h>
  56 #include <genarch/srln/srln.h>
  57 #include <genarch/multiboot/multiboot.h>
  58 #include <genarch/multiboot/multiboot2.h>
  59 #include <arch/pm.h>
  60 #include <arch/vreg.h>
  61 #include <arch/kseg.h>
  62
  63 #ifdef CONFIG_SMP
  64 #include <arch/smp/apic.h>
  65 #endif
  66
  67 static void amd64_pre_mm_init(void);
  68 static void amd64_post_mm_init(void);
  69 static void amd64_post_cpu_init(void);
  70 static void amd64_pre_smp_init(void);
  71 static void amd64_post_smp_init(void);
  72
  73 arch_ops_t amd64_ops = {
  74         .pre_mm_init = amd64_pre_mm_init,
  75         .post_mm_init = amd64_post_mm_init,
  76         .post_cpu_init = amd64_post_cpu_init,
  77         .pre_smp_init = amd64_pre_smp_init,
  78         .post_smp_init = amd64_post_smp_init
  79 };
  80
  81 arch_ops_t *arch_ops = &amd64_ops;
  82
  83 /** Perform amd64-specific initialization before main_bsp() is called.
  84  *
  85  * @param signature Multiboot signature.
  86  * @param info      Multiboot information structure.
  87  *
  88  */
  89 void amd64_pre_main(uint32_t signature, void *info)
  90 {
  91         /* Parse multiboot information obtained from the bootloader. */
  92         multiboot_info_parse(signature, (multiboot_info_t *) info);
  93         multiboot2_info_parse(signature, (multiboot2_info_t *) info);
  94
  95 #ifdef CONFIG_SMP
  96         size_t unmapped_size = (uintptr_t) unmapped_end - BOOT_OFFSET;
  97         /* Copy AP bootstrap routines below 1 MB. */
  98         memcpy((void *) AP_BOOT_OFFSET, (void *) BOOT_OFFSET, unmapped_size);
  99 #endif
 100 }
 101
 102 void amd64_pre_mm_init(void)
 103 {
 104         /* Enable no-execute pages */
 105         write_msr(AMD_MSR_EFER, read_msr(AMD_MSR_EFER) | AMD_NXE);
 106         /* Enable FPU */
 107         cpu_setup_fpu();
 108
 109         /* Initialize segmentation */
 110         pm_init();
 111
 112         /* Disable I/O on nonprivileged levels, clear the nested-thread flag */
 113         write_rflags(read_rflags() & ~(RFLAGS_IOPL | RFLAGS_NT));
 114         /* Disable alignment check */
 115         write_cr0(read_cr0() & ~CR0_AM);
 116
 117         if (config.cpu_active == 1) {
 118                 interrupt_init();
 119                 bios_init();
 120
 121                 /* PIC */
 122                 i8259_init((i8259_t *) I8259_PIC0_BASE,
 123                     (i8259_t *) I8259_PIC1_BASE, IRQ_PIC1, IVT_IRQBASE,
 124                     IVT_IRQBASE + 8);
 125         }
 126 }
 127
 128 void amd64_post_mm_init(void)
 129 {
 130         vreg_init();
 131         kseg_init();
 132
 133         if (config.cpu_active == 1) {
 134                 /* Initialize IRQ routing */
 135                 irq_init(IRQ_COUNT, IRQ_COUNT);
 136
 137                 /* hard clock */
 138                 i8254_init();
 139
 140 #if (defined(CONFIG_FB) || defined(CONFIG_EGA))
 141                 bool bfb = false;
 142 #endif
 143
 144 #ifdef CONFIG_FB
 145                 bfb = bfb_init();
 146 #endif
 147
 148 #ifdef CONFIG_EGA
 149                 if (!bfb) {
 150                         outdev_t *egadev = ega_init(EGA_BASE, EGA_VIDEORAM);
 151                         if (egadev)
 152                                 stdout_wire(egadev);
 153                 }
 154 #endif
 155
 156                 /* Merge all memory zones to 1 big zone */
 157                 zone_merge_all();
 158         }
 159
 160         /* Setup fast SYSCALL/SYSRET */
 161         syscall_setup_cpu();
 162 }
 163
 164 void amd64_post_cpu_init(void)
 165 {
 166 #ifdef CONFIG_SMP
 167         if (config.cpu_active > 1) {
 168                 l_apic_init();
 169                 l_apic_debug();
 170         }
 171 #endif
 172 }
 173
 174 void amd64_pre_smp_init(void)
 175 {
 176         if (config.cpu_active == 1) {
 177 #ifdef CONFIG_SMP
 178                 acpi_init();
 179 #endif /* CONFIG_SMP */
 180         }
 181 }
 182
 183 void amd64_post_smp_init(void)
 184 {
 185         /* Currently the only supported platform for amd64 is 'pc'. */
 186         static const char *platform = "pc";
 187
 188         sysinfo_set_item_data("platform", NULL, (void *) platform,
 189             str_size(platform));
 190
 191 #ifdef CONFIG_PC_KBD
 192         /*
 193          * Initialize the i8042 controller. Then initialize the keyboard
 194          * module and connect it to i8042. Enable keyboard interrupts.
 195          */
 196         i8042_instance_t *i8042_instance = i8042_init((i8042_t *) I8042_BASE, IRQ_KBD);
 197         if (i8042_instance) {
 198                 kbrd_instance_t *kbrd_instance = kbrd_init();
 199                 if (kbrd_instance) {
 200                         indev_t *sink = stdin_wire();
 201                         indev_t *kbrd = kbrd_wire(kbrd_instance, sink);
 202                         i8042_wire(i8042_instance, kbrd);
 203                         trap_virtual_enable_irqs(1 << IRQ_KBD);
 204                         trap_virtual_enable_irqs(1 << IRQ_MOUSE);
 205                 }
 206         }
 207 #endif
 208
 209 #if (defined(CONFIG_NS16550) || defined(CONFIG_NS16550_OUT))
 210         /*
 211          * Initialize the ns16550 controller.
 212          */
 213 #ifdef CONFIG_NS16550_OUT
 214         outdev_t *ns16550_out;
 215         outdev_t **ns16550_out_ptr = &ns16550_out;
 216 #else
 217         outdev_t **ns16550_out_ptr = NULL;
 218 #endif
 219         ns16550_instance_t *ns16550_instance =
 220             ns16550_init(NS16550_BASE, 0, IRQ_NS16550, NULL, NULL,
 221             ns16550_out_ptr);
 222         if (ns16550_instance) {
 223 #ifdef CONFIG_NS16550
 224                 srln_instance_t *srln_instance = srln_init();
 225                 if (srln_instance) {
 226                         indev_t *sink = stdin_wire();
 227                         indev_t *srln = srln_wire(srln_instance, sink);
 228                         ns16550_wire(ns16550_instance, srln);
 229                         trap_virtual_enable_irqs(1 << IRQ_NS16550);
 230                 }
 231 #endif
 232 #ifdef CONFIG_NS16550_OUT
 233                 if (ns16550_out) {
 234                         stdout_wire(ns16550_out);
 235                 }
 236 #endif
 237         }
 238 #endif
 239
 240         if (irqs_info != NULL)
 241                 sysinfo_set_item_val(irqs_info, NULL, true);
 242 }
 243
 244 void calibrate_delay_loop(void)
 245 {
 246         i8254_calibrate_delay_loop();
 247         if (config.cpu_active == 1) {
 248                 /*
 249                  * This has to be done only on UP.
 250                  * On SMP, i8254 is not used for time keeping and its interrupt pin remains masked.
 251                  */
 252                 i8254_normal_operation();
 253         }
 254 }
 255
 256 /** Construct function pointer
 257  *
 258  * @param fptr   function pointer structure
 259  * @param addr   function address
 260  * @param caller calling function address
 261  *
 262  * @return address of the function pointer
 263  *
 264  */
 265 void *arch_construct_function(fncptr_t *fptr, void *addr, void *caller)
 266 {
 267         return addr;
 268 }
 269
 270 void arch_reboot(void)
 271 {
 272 #ifdef CONFIG_PC_KBD
 273         i8042_cpu_reset((i8042_t *) I8042_BASE);
 274 #endif
 275 }
 276
 277 void irq_initialize_arch(irq_t *irq)
 278 {
 279         (void) irq;
 280 }
 281
 282 /** @}
 283  */