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206 | palkovsky | 1 | /* |
2071 | jermar | 2 | * Copyright (c) 2005 Ondrej Palkovsky |
206 | palkovsky | 3 | * All rights reserved. |
4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
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6 | * modification, are permitted provided that the following conditions |
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7 | * are met: |
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8 | * |
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9 | * - Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * - Redistributions in binary form must reproduce the above copyright |
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12 | * notice, this list of conditions and the following disclaimer in the |
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13 | * documentation and/or other materials provided with the distribution. |
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14 | * - The name of the author may not be used to endorse or promote products |
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15 | * derived from this software without specific prior written permission. |
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16 | * |
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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27 | */ |
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28 | |||
1842 | jermar | 29 | /** @addtogroup amd64 |
1702 | cejka | 30 | * @{ |
31 | */ |
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32 | /** @file |
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33 | */ |
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34 | |||
206 | palkovsky | 35 | #include <arch.h> |
36 | |||
37 | #include <arch/types.h> |
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38 | |||
39 | #include <config.h> |
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40 | |||
1112 | palkovsky | 41 | #include <proc/thread.h> |
4022 | svoboda | 42 | #include <genarch/multiboot/multiboot.h> |
3932 | jermar | 43 | #include <genarch/drivers/legacy/ia32/io.h> |
3779 | jermar | 44 | #include <genarch/drivers/ega/ega.h> |
1477 | decky | 45 | #include <arch/drivers/vesa.h> |
1842 | jermar | 46 | #include <genarch/kbd/i8042.h> |
1477 | decky | 47 | #include <arch/drivers/i8254.h> |
48 | #include <arch/drivers/i8259.h> |
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4022 | svoboda | 49 | #include <arch/boot/boot.h> |
206 | palkovsky | 50 | |
1901 | jermar | 51 | #ifdef CONFIG_SMP |
52 | #include <arch/smp/apic.h> |
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53 | #endif |
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54 | |||
206 | palkovsky | 55 | #include <arch/bios/bios.h> |
251 | palkovsky | 56 | #include <arch/cpu.h> |
57 | #include <print.h> |
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58 | #include <arch/cpuid.h> |
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452 | decky | 59 | #include <genarch/acpi/acpi.h> |
282 | palkovsky | 60 | #include <panic.h> |
576 | palkovsky | 61 | #include <interrupt.h> |
803 | palkovsky | 62 | #include <arch/syscall.h> |
1072 | palkovsky | 63 | #include <arch/debugger.h> |
1112 | palkovsky | 64 | #include <syscall/syscall.h> |
1474 | palkovsky | 65 | #include <console/console.h> |
1958 | decky | 66 | #include <ddi/irq.h> |
67 | #include <ddi/device.h> |
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3982 | jermar | 68 | #include <sysinfo/sysinfo.h> |
206 | palkovsky | 69 | |
799 | palkovsky | 70 | /** Disable I/O on non-privileged levels |
71 | * |
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72 | * Clean IOPL(12,13) and NT(14) flags in EFLAGS register |
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73 | */ |
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74 | static void clean_IOPL_NT_flags(void) |
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75 | { |
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4017 | decky | 76 | asm volatile ( |
2697 | decky | 77 | "pushfq\n" |
78 | "pop %%rax\n" |
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79 | "and $~(0x7000), %%rax\n" |
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80 | "pushq %%rax\n" |
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81 | "popfq\n" |
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4017 | decky | 82 | ::: "%rax" |
799 | palkovsky | 83 | ); |
84 | } |
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85 | |||
86 | /** Disable alignment check |
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87 | * |
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88 | * Clean AM(18) flag in CR0 register |
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89 | */ |
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90 | static void clean_AM_flag(void) |
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91 | { |
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4017 | decky | 92 | asm volatile ( |
2697 | decky | 93 | "mov %%cr0, %%rax\n" |
94 | "and $~(0x40000), %%rax\n" |
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95 | "mov %%rax, %%cr0\n" |
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4017 | decky | 96 | ::: "%rax" |
799 | palkovsky | 97 | ); |
98 | } |
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99 | |||
4022 | svoboda | 100 | /** Perform amd64-specific initialization before main_bsp() is called. |
101 | * |
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102 | * @param signature Should contain the multiboot signature. |
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103 | * @param mi Pointer to the multiboot information structure. |
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104 | */ |
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105 | void arch_pre_main(uint32_t signature, const multiboot_info_t *mi) |
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106 | { |
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107 | /* Parse multiboot information obtained from the bootloader. */ |
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108 | multiboot_info_parse(signature, mi); |
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109 | |||
110 | #ifdef CONFIG_SMP |
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111 | /* Copy AP bootstrap routines below 1 MB. */ |
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112 | memcpy((void *) AP_BOOT_OFFSET, (void *) BOOT_OFFSET, |
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113 | (size_t) &_hardcoded_unmapped_size); |
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114 | #endif |
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115 | } |
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116 | |||
206 | palkovsky | 117 | void arch_pre_mm_init(void) |
118 | { |
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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(); |
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803 | palkovsky | 123 | |
799 | palkovsky | 124 | /* Initialize segmentation */ |
206 | palkovsky | 125 | pm_init(); |
2692 | decky | 126 | |
127 | /* Disable I/O on nonprivileged levels |
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128 | * clear the NT (nested-thread) flag |
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799 | palkovsky | 129 | */ |
130 | clean_IOPL_NT_flags(); |
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131 | /* Disable alignment check */ |
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132 | clean_AM_flag(); |
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133 | |||
206 | palkovsky | 134 | if (config.cpu_active == 1) { |
1958 | decky | 135 | interrupt_init(); |
206 | palkovsky | 136 | bios_init(); |
1958 | decky | 137 | |
138 | /* PIC */ |
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139 | i8259_init(); |
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206 | palkovsky | 140 | } |
141 | } |
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142 | |||
2697 | decky | 143 | |
206 | palkovsky | 144 | void arch_post_mm_init(void) |
145 | { |
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146 | if (config.cpu_active == 1) { |
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1958 | decky | 147 | /* Initialize IRQ routing */ |
148 | irq_init(IRQ_COUNT, IRQ_COUNT); |
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149 | |||
150 | /* hard clock */ |
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151 | i8254_init(); |
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2697 | decky | 152 | |
1289 | vana | 153 | #ifdef CONFIG_FB |
1303 | palkovsky | 154 | if (vesa_present()) |
155 | vesa_init(); |
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156 | else |
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1289 | vana | 157 | #endif |
3779 | jermar | 158 | ega_init(EGA_BASE, EGA_VIDEORAM); /* video */ |
1958 | decky | 159 | |
1072 | palkovsky | 160 | /* Enable debugger */ |
161 | debugger_init(); |
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1303 | palkovsky | 162 | /* Merge all memory zones to 1 big zone */ |
163 | zone_merge_all(); |
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206 | palkovsky | 164 | } |
2697 | decky | 165 | |
803 | palkovsky | 166 | /* Setup fast SYSCALL/SYSRET */ |
167 | syscall_setup_cpu(); |
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206 | palkovsky | 168 | } |
242 | palkovsky | 169 | |
1901 | jermar | 170 | void arch_post_cpu_init() |
171 | { |
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172 | #ifdef CONFIG_SMP |
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173 | if (config.cpu_active > 1) { |
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174 | l_apic_init(); |
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175 | l_apic_debug(); |
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176 | } |
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177 | #endif |
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178 | } |
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179 | |||
503 | jermar | 180 | void arch_pre_smp_init(void) |
242 | palkovsky | 181 | { |
182 | if (config.cpu_active == 1) { |
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2723 | decky | 183 | #ifdef CONFIG_SMP |
242 | palkovsky | 184 | acpi_init(); |
2723 | decky | 185 | #endif /* CONFIG_SMP */ |
242 | palkovsky | 186 | } |
187 | } |
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188 | |||
503 | jermar | 189 | void arch_post_smp_init(void) |
190 | { |
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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); |
194 | |||
195 | /* |
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196 | * This is the necessary evil until the userspace driver is entirely |
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197 | * self-sufficient. |
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198 | */ |
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199 | sysinfo_set_item_val("kbd", NULL, true); |
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200 | sysinfo_set_item_val("kbd.devno", NULL, devno); |
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201 | sysinfo_set_item_val("kbd.inr", NULL, IRQ_KBD); |
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4026 | jermar | 202 | sysinfo_set_item_val("kbd.address.physical", NULL, |
203 | (uintptr_t) I8042_BASE); |
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204 | sysinfo_set_item_val("kbd.address.kernel", NULL, |
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205 | (uintptr_t) I8042_BASE); |
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503 | jermar | 206 | } |
207 | |||
242 | palkovsky | 208 | void calibrate_delay_loop(void) |
209 | { |
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210 | i8254_calibrate_delay_loop(); |
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1958 | decky | 211 | if (config.cpu_active == 1) { |
212 | /* |
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213 | * This has to be done only on UP. |
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214 | * On SMP, i8254 is not used for time keeping and its interrupt pin remains masked. |
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215 | */ |
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216 | i8254_normal_operation(); |
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217 | } |
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242 | palkovsky | 218 | } |
1112 | palkovsky | 219 | |
1121 | jermar | 220 | /** Set thread-local-storage pointer |
1112 | palkovsky | 221 | * |
222 | * TLS pointer is set in FS register. Unfortunately the 64-bit |
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223 | * part can be set only in CPL0 mode. |
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224 | * |
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1121 | jermar | 225 | * The specs say, that on %fs:0 there is stored contents of %fs register, |
1112 | palkovsky | 226 | * we need not to go to CPL0 to read it. |
227 | */ |
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1780 | jermar | 228 | unative_t sys_tls_set(unative_t addr) |
1112 | palkovsky | 229 | { |
1184 | jermar | 230 | THREAD->arch.tls = addr; |
1112 | palkovsky | 231 | write_msr(AMD_MSR_FS, addr); |
232 | return 0; |
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233 | } |
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1474 | palkovsky | 234 | |
235 | /** Acquire console back for kernel |
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236 | * |
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237 | */ |
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238 | void arch_grab_console(void) |
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239 | { |
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3762 | decky | 240 | #ifdef CONFIG_FB |
241 | vesa_redraw(); |
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242 | #else |
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243 | ega_redraw(); |
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244 | #endif |
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1474 | palkovsky | 245 | } |
3706 | decky | 246 | |
1474 | palkovsky | 247 | /** Return console to userspace |
248 | * |
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249 | */ |
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250 | void arch_release_console(void) |
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251 | { |
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252 | } |
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1702 | cejka | 253 | |
3880 | decky | 254 | /** Construct function pointer |
255 | * |
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256 | * @param fptr function pointer structure |
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257 | * @param addr function address |
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258 | * @param caller calling function address |
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259 | * |
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260 | * @return address of the function pointer |
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261 | * |
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262 | */ |
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263 | void *arch_construct_function(fncptr_t *fptr, void *addr, void *caller) |
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264 | { |
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265 | return addr; |
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266 | } |
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267 | |||
1842 | jermar | 268 | /** @} |
1702 | cejka | 269 | */ |