Rev 1473 | Rev 1477 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
---|---|---|---|
206 | palkovsky | 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 | #include <arch.h> |
||
30 | |||
31 | #include <arch/types.h> |
||
32 | |||
33 | #include <config.h> |
||
34 | |||
1112 | palkovsky | 35 | #include <proc/thread.h> |
1473 | decky | 36 | #include <arch/drivers/ega.h> |
1289 | vana | 37 | #include <arch/vesa.h> |
894 | jermar | 38 | #include <genarch/i8042/i8042.h> |
206 | palkovsky | 39 | #include <arch/i8254.h> |
40 | #include <arch/i8259.h> |
||
41 | |||
42 | #include <arch/bios/bios.h> |
||
242 | palkovsky | 43 | #include <arch/mm/memory_init.h> |
251 | palkovsky | 44 | #include <arch/cpu.h> |
45 | #include <print.h> |
||
46 | #include <arch/cpuid.h> |
||
452 | decky | 47 | #include <genarch/acpi/acpi.h> |
282 | palkovsky | 48 | #include <panic.h> |
576 | palkovsky | 49 | #include <interrupt.h> |
803 | palkovsky | 50 | #include <arch/syscall.h> |
1072 | palkovsky | 51 | #include <arch/debugger.h> |
1112 | palkovsky | 52 | #include <syscall/syscall.h> |
1474 | palkovsky | 53 | #include <console/console.h> |
206 | palkovsky | 54 | |
1112 | palkovsky | 55 | |
799 | palkovsky | 56 | /** Disable I/O on non-privileged levels |
57 | * |
||
58 | * Clean IOPL(12,13) and NT(14) flags in EFLAGS register |
||
59 | */ |
||
60 | static void clean_IOPL_NT_flags(void) |
||
61 | { |
||
62 | asm |
||
63 | ( |
||
64 | "pushfq;" |
||
65 | "pop %%rax;" |
||
66 | "and $~(0x7000),%%rax;" |
||
67 | "pushq %%rax;" |
||
68 | "popfq;" |
||
69 | : |
||
70 | : |
||
71 | :"%rax" |
||
72 | ); |
||
73 | } |
||
74 | |||
75 | /** Disable alignment check |
||
76 | * |
||
77 | * Clean AM(18) flag in CR0 register |
||
78 | */ |
||
79 | static void clean_AM_flag(void) |
||
80 | { |
||
81 | asm |
||
82 | ( |
||
83 | "mov %%cr0,%%rax;" |
||
84 | "and $~(0x40000),%%rax;" |
||
85 | "mov %%rax,%%cr0;" |
||
86 | : |
||
87 | : |
||
88 | :"%rax" |
||
89 | ); |
||
90 | } |
||
91 | |||
206 | palkovsky | 92 | void arch_pre_mm_init(void) |
93 | { |
||
251 | palkovsky | 94 | struct cpu_info cpuid_s; |
95 | |||
96 | cpuid(AMD_CPUID_EXTENDED,&cpuid_s); |
||
282 | palkovsky | 97 | if (! (cpuid_s.cpuid_edx & (1<<AMD_EXT_NOEXECUTE))) |
98 | panic("Processor does not support No-execute pages.\n"); |
||
99 | |||
100 | cpuid(INTEL_CPUID_STANDARD,&cpuid_s); |
||
101 | if (! (cpuid_s.cpuid_edx & (1<<INTEL_FXSAVE))) |
||
102 | panic("Processor does not support FXSAVE/FXRESTORE.\n"); |
||
103 | |||
104 | if (! (cpuid_s.cpuid_edx & (1<<INTEL_SSE2))) |
||
105 | panic("Processor does not support SSE2 instructions.\n"); |
||
106 | |||
107 | /* Enable No-execute pages */ |
||
251 | palkovsky | 108 | set_efer_flag(AMD_NXE_FLAG); |
282 | palkovsky | 109 | /* Enable FPU */ |
110 | cpu_setup_fpu(); |
||
803 | palkovsky | 111 | |
799 | palkovsky | 112 | /* Initialize segmentation */ |
206 | palkovsky | 113 | pm_init(); |
114 | |||
799 | palkovsky | 115 | /* Disable I/O on nonprivileged levels |
116 | * clear the NT(nested-thread) flag |
||
117 | */ |
||
118 | clean_IOPL_NT_flags(); |
||
119 | /* Disable alignment check */ |
||
120 | clean_AM_flag(); |
||
121 | |||
206 | palkovsky | 122 | if (config.cpu_active == 1) { |
123 | bios_init(); |
||
124 | i8259_init(); /* PIC */ |
||
125 | i8254_init(); /* hard clock */ |
||
126 | |||
458 | decky | 127 | #ifdef CONFIG_SMP |
576 | palkovsky | 128 | exc_register(VECTOR_TLB_SHOOTDOWN_IPI, "tlb_shootdown", |
129 | tlb_shootdown_ipi); |
||
458 | decky | 130 | #endif /* CONFIG_SMP */ |
206 | palkovsky | 131 | } |
132 | } |
||
133 | |||
134 | void arch_post_mm_init(void) |
||
135 | { |
||
136 | if (config.cpu_active == 1) { |
||
1289 | vana | 137 | #ifdef CONFIG_FB |
1303 | palkovsky | 138 | if (vesa_present()) |
139 | vesa_init(); |
||
140 | else |
||
1289 | vana | 141 | #endif |
1303 | palkovsky | 142 | ega_init(); /* video */ |
1072 | palkovsky | 143 | /* Enable debugger */ |
144 | debugger_init(); |
||
1303 | palkovsky | 145 | /* Merge all memory zones to 1 big zone */ |
146 | zone_merge_all(); |
||
206 | palkovsky | 147 | } |
803 | palkovsky | 148 | /* Setup fast SYSCALL/SYSRET */ |
149 | syscall_setup_cpu(); |
||
1072 | palkovsky | 150 | |
206 | palkovsky | 151 | } |
242 | palkovsky | 152 | |
503 | jermar | 153 | void arch_pre_smp_init(void) |
242 | palkovsky | 154 | { |
155 | if (config.cpu_active == 1) { |
||
156 | memory_print_map(); |
||
157 | |||
458 | decky | 158 | #ifdef CONFIG_SMP |
242 | palkovsky | 159 | acpi_init(); |
458 | decky | 160 | #endif /* CONFIG_SMP */ |
242 | palkovsky | 161 | } |
162 | } |
||
163 | |||
503 | jermar | 164 | void arch_post_smp_init(void) |
165 | { |
||
894 | jermar | 166 | i8042_init(); /* keyboard controller */ |
503 | jermar | 167 | } |
168 | |||
242 | palkovsky | 169 | void calibrate_delay_loop(void) |
170 | { |
||
171 | i8254_calibrate_delay_loop(); |
||
172 | i8254_normal_operation(); |
||
173 | } |
||
1112 | palkovsky | 174 | |
1121 | jermar | 175 | /** Set thread-local-storage pointer |
1112 | palkovsky | 176 | * |
177 | * TLS pointer is set in FS register. Unfortunately the 64-bit |
||
178 | * part can be set only in CPL0 mode. |
||
179 | * |
||
1121 | jermar | 180 | * The specs say, that on %fs:0 there is stored contents of %fs register, |
1112 | palkovsky | 181 | * we need not to go to CPL0 to read it. |
182 | */ |
||
183 | __native sys_tls_set(__native addr) |
||
184 | { |
||
1184 | jermar | 185 | THREAD->arch.tls = addr; |
1112 | palkovsky | 186 | write_msr(AMD_MSR_FS, addr); |
187 | return 0; |
||
188 | } |
||
1474 | palkovsky | 189 | |
190 | /** Acquire console back for kernel |
||
191 | * |
||
192 | */ |
||
193 | void arch_grab_console(void) |
||
194 | { |
||
195 | i8042_grab(); |
||
196 | } |
||
197 | /** Return console to userspace |
||
198 | * |
||
199 | */ |
||
200 | void arch_release_console(void) |
||
201 | { |
||
202 | i8042_release(); |
||
203 | } |