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| Rev | Author | Line No. | Line |
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| 206 | palkovsky | 1 | /* |
| 2 | * Copyright (C) 2005 Ondrej Palkovsky |
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| 3 | * All rights reserved. |
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| 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 | |||
| 29 | #include <arch.h> |
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| 30 | |||
| 31 | #include <arch/types.h> |
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| 32 | |||
| 33 | #include <config.h> |
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| 34 | |||
| 35 | #include <arch/ega.h> |
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| 894 | jermar | 36 | #include <genarch/i8042/i8042.h> |
| 206 | palkovsky | 37 | #include <arch/i8254.h> |
| 38 | #include <arch/i8259.h> |
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| 39 | |||
| 40 | #include <arch/bios/bios.h> |
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| 242 | palkovsky | 41 | #include <arch/mm/memory_init.h> |
| 251 | palkovsky | 42 | #include <arch/cpu.h> |
| 43 | #include <print.h> |
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| 44 | #include <arch/cpuid.h> |
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| 452 | decky | 45 | #include <genarch/acpi/acpi.h> |
| 282 | palkovsky | 46 | #include <panic.h> |
| 576 | palkovsky | 47 | #include <interrupt.h> |
| 803 | palkovsky | 48 | #include <arch/syscall.h> |
| 1072 | palkovsky | 49 | #include <arch/debugger.h> |
| 206 | palkovsky | 50 | |
| 799 | palkovsky | 51 | /** Disable I/O on non-privileged levels |
| 52 | * |
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| 53 | * Clean IOPL(12,13) and NT(14) flags in EFLAGS register |
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| 54 | */ |
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| 55 | static void clean_IOPL_NT_flags(void) |
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| 56 | { |
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| 57 | asm |
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| 58 | ( |
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| 59 | "pushfq;" |
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| 60 | "pop %%rax;" |
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| 61 | "and $~(0x7000),%%rax;" |
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| 62 | "pushq %%rax;" |
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| 63 | "popfq;" |
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| 64 | : |
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| 65 | : |
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| 66 | :"%rax" |
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| 67 | ); |
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| 68 | } |
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| 69 | |||
| 70 | /** Disable alignment check |
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| 71 | * |
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| 72 | * Clean AM(18) flag in CR0 register |
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| 73 | */ |
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| 74 | static void clean_AM_flag(void) |
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| 75 | { |
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| 76 | asm |
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| 77 | ( |
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| 78 | "mov %%cr0,%%rax;" |
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| 79 | "and $~(0x40000),%%rax;" |
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| 80 | "mov %%rax,%%cr0;" |
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| 81 | : |
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| 82 | : |
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| 83 | :"%rax" |
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| 84 | ); |
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| 85 | } |
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| 86 | |||
| 206 | palkovsky | 87 | void arch_pre_mm_init(void) |
| 88 | { |
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| 251 | palkovsky | 89 | struct cpu_info cpuid_s; |
| 90 | |||
| 91 | cpuid(AMD_CPUID_EXTENDED,&cpuid_s); |
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| 282 | palkovsky | 92 | if (! (cpuid_s.cpuid_edx & (1<<AMD_EXT_NOEXECUTE))) |
| 93 | panic("Processor does not support No-execute pages.\n"); |
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| 94 | |||
| 95 | cpuid(INTEL_CPUID_STANDARD,&cpuid_s); |
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| 96 | if (! (cpuid_s.cpuid_edx & (1<<INTEL_FXSAVE))) |
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| 97 | panic("Processor does not support FXSAVE/FXRESTORE.\n"); |
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| 98 | |||
| 99 | if (! (cpuid_s.cpuid_edx & (1<<INTEL_SSE2))) |
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| 100 | panic("Processor does not support SSE2 instructions.\n"); |
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| 101 | |||
| 102 | /* Enable No-execute pages */ |
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| 251 | palkovsky | 103 | set_efer_flag(AMD_NXE_FLAG); |
| 282 | palkovsky | 104 | /* Enable FPU */ |
| 105 | cpu_setup_fpu(); |
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| 803 | palkovsky | 106 | |
| 799 | palkovsky | 107 | /* Initialize segmentation */ |
| 206 | palkovsky | 108 | pm_init(); |
| 109 | |||
| 799 | palkovsky | 110 | /* Disable I/O on nonprivileged levels |
| 111 | * clear the NT(nested-thread) flag |
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| 112 | */ |
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| 113 | clean_IOPL_NT_flags(); |
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| 114 | /* Disable alignment check */ |
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| 115 | clean_AM_flag(); |
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| 116 | |||
| 206 | palkovsky | 117 | if (config.cpu_active == 1) { |
| 118 | bios_init(); |
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| 119 | i8259_init(); /* PIC */ |
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| 120 | i8254_init(); /* hard clock */ |
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| 121 | |||
| 458 | decky | 122 | #ifdef CONFIG_SMP |
| 576 | palkovsky | 123 | exc_register(VECTOR_TLB_SHOOTDOWN_IPI, "tlb_shootdown", |
| 124 | tlb_shootdown_ipi); |
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| 458 | decky | 125 | #endif /* CONFIG_SMP */ |
| 206 | palkovsky | 126 | } |
| 127 | } |
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| 128 | |||
| 129 | void arch_post_mm_init(void) |
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| 130 | { |
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| 131 | if (config.cpu_active == 1) { |
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| 132 | ega_init(); /* video */ |
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| 1072 | palkovsky | 133 | /* Enable debugger */ |
| 134 | debugger_init(); |
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| 206 | palkovsky | 135 | } |
| 803 | palkovsky | 136 | /* Setup fast SYSCALL/SYSRET */ |
| 137 | syscall_setup_cpu(); |
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| 1072 | palkovsky | 138 | |
| 206 | palkovsky | 139 | } |
| 242 | palkovsky | 140 | |
| 503 | jermar | 141 | void arch_pre_smp_init(void) |
| 242 | palkovsky | 142 | { |
| 143 | if (config.cpu_active == 1) { |
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| 144 | memory_print_map(); |
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| 145 | |||
| 458 | decky | 146 | #ifdef CONFIG_SMP |
| 242 | palkovsky | 147 | acpi_init(); |
| 458 | decky | 148 | #endif /* CONFIG_SMP */ |
| 242 | palkovsky | 149 | } |
| 150 | } |
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| 151 | |||
| 503 | jermar | 152 | void arch_post_smp_init(void) |
| 153 | { |
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| 894 | jermar | 154 | i8042_init(); /* keyboard controller */ |
| 503 | jermar | 155 | } |
| 156 | |||
| 242 | palkovsky | 157 | void calibrate_delay_loop(void) |
| 158 | { |
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| 159 | i8254_calibrate_delay_loop(); |
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| 160 | i8254_normal_operation(); |
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| 161 | } |