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Rev | Author | Line No. | Line |
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164 | palkovsky | 1 | # |
288 | jermar | 2 | # Copyright (C) 2005 Ondrej Palkovsky |
696 | decky | 3 | # Copyright (C) 2006 Martin Decky |
164 | palkovsky | 4 | # All rights reserved. |
5 | # |
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6 | # Redistribution and use in source and binary forms, with or without |
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7 | # modification, are permitted provided that the following conditions |
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8 | # are met: |
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9 | # |
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10 | # - Redistributions of source code must retain the above copyright |
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11 | # notice, this list of conditions and the following disclaimer. |
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12 | # - Redistributions in binary form must reproduce the above copyright |
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13 | # notice, this list of conditions and the following disclaimer in the |
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14 | # documentation and/or other materials provided with the distribution. |
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15 | # - The name of the author may not be used to endorse or promote products |
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16 | # derived from this software without specific prior written permission. |
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17 | # |
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18 | # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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19 | # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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20 | # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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21 | # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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22 | # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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23 | # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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24 | # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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25 | # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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26 | # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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27 | # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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28 | # |
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29 | |||
695 | decky | 30 | #include <arch/boot/boot.h> |
31 | #include <arch/boot/memmap.h> |
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194 | palkovsky | 32 | #include <arch/mm/page.h> |
188 | palkovsky | 33 | #include <arch/mm/ptl.h> |
194 | palkovsky | 34 | #include <arch/pm.h> |
251 | palkovsky | 35 | #include <arch/cpu.h> |
275 | palkovsky | 36 | #include <arch/cpuid.h> |
164 | palkovsky | 37 | |
694 | decky | 38 | #define START_STACK (BOOT_OFFSET - BOOT_STACK_SIZE) |
275 | palkovsky | 39 | |
406 | jermar | 40 | .section K_TEXT_START, "ax" |
695 | decky | 41 | |
680 | decky | 42 | .code32 |
43 | .align 4 |
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695 | decky | 44 | .global multiboot_image_start |
680 | decky | 45 | multiboot_header: |
46 | .long MULTIBOOT_HEADER_MAGIC |
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47 | .long MULTIBOOT_HEADER_FLAGS |
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48 | .long -(MULTIBOOT_HEADER_MAGIC + MULTIBOOT_HEADER_FLAGS) # checksum |
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694 | decky | 49 | .long multiboot_header |
50 | .long unmapped_ktext_start |
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680 | decky | 51 | .long 0 |
52 | .long 0 |
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694 | decky | 53 | .long multiboot_image_start |
188 | palkovsky | 54 | |
680 | decky | 55 | multiboot_image_start: |
695 | decky | 56 | movl $START_STACK, %esp # initialize stack pointer |
57 | lgdt bootstrap_gdtr # initialize Global Descriptor Table register |
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680 | decky | 58 | |
685 | decky | 59 | movw $gdtselector(KDATA_DES), %cx |
60 | movw %cx, %es |
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61 | movw %cx, %ds # kernel data + stack |
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62 | movw %cx, %ss |
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807 | palkovsky | 63 | # Simics seems to remove hidden part of GS on entering user mode |
64 | # when _visible_ part of GS does not point to user-mode segment |
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65 | movw $gdtselector(UDATA_DES), %cx |
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66 | movw %cx, %fs |
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67 | movw %cx, %gs |
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685 | decky | 68 | |
695 | decky | 69 | jmpl $gdtselector(KTEXT32_DES), $multiboot_meeting_point |
685 | decky | 70 | multiboot_meeting_point: |
71 | |||
695 | decky | 72 | movl %eax, grub_eax # save parameters from GRUB |
73 | movl %ebx, grub_ebx |
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74 | |||
1289 | vana | 75 | #ifdef CONFIG_FB |
1641 | decky | 76 | mov $vesa_init, %esi; |
77 | mov $VESA_INIT_SEGMENT << 4, %edi |
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78 | mov $e_vesa_init - vesa_init, %ecx |
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79 | cld |
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80 | rep movsb |
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1289 | vana | 81 | |
1641 | decky | 82 | mov $VESA_INIT_SEGMENT << 4, %edi |
83 | jmpl *%edi |
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84 | |||
85 | vesa_meeting_point: |
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86 | |||
87 | mov %esi, KA2PA(vesa_ph_addr) |
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88 | mov %di, KA2PA(vesa_height) |
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89 | shr $16, %edi |
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90 | mov %di, KA2PA(vesa_width) |
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91 | mov %bx, KA2PA(vesa_scanline) |
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92 | shr $16, %ebx |
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93 | mov %bx, KA2PA(vesa_bpp) |
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1289 | vana | 94 | #endif |
95 | |||
694 | decky | 96 | # Protected 32-bit. We want to reuse the code-seg descriptor, |
97 | # the Default operand size must not be 1 when entering long mode |
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275 | palkovsky | 98 | |
696 | decky | 99 | movl $0x80000000, %eax |
100 | cpuid |
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101 | cmp $0x80000000, %eax # any function > 80000000h? |
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102 | jbe long_mode_unsupported |
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103 | movl $(AMD_CPUID_EXTENDED), %eax # Extended function code 80000001 |
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104 | cpuid |
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105 | bt $29, %edx # Test if long mode is supported. |
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106 | jc long_mode_supported |
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107 | |||
108 | long_mode_unsupported: |
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109 | cli |
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110 | hlt |
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111 | |||
112 | long_mode_supported: |
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113 | |||
188 | palkovsky | 114 | # Enable 64-bit page transaltion entries - CR4.PAE = 1. |
115 | # Paging is not enabled until after long mode is enabled |
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694 | decky | 116 | |
188 | palkovsky | 117 | movl %cr4, %eax |
118 | btsl $5, %eax |
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119 | movl %eax, %cr4 |
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120 | |||
121 | # Set up paging tables |
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694 | decky | 122 | |
188 | palkovsky | 123 | leal ptl_0, %eax |
124 | movl %eax, %cr3 |
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275 | palkovsky | 125 | |
188 | palkovsky | 126 | # Enable long mode |
178 | palkovsky | 127 | |
694 | decky | 128 | movl $EFER_MSR_NUM, %ecx # EFER MSR number |
129 | rdmsr # Read EFER |
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130 | btsl $AMD_LME_FLAG, %eax # Set LME=1 |
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131 | wrmsr # Write EFER |
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132 | |||
188 | palkovsky | 133 | # Enable paging to activate long mode (set CR0.PG=1) |
694 | decky | 134 | |
188 | palkovsky | 135 | movl %cr0, %eax |
136 | btsl $31, %eax |
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137 | movl %eax, %cr0 |
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138 | |||
139 | # At this point we are in compatibility mode |
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694 | decky | 140 | |
206 | palkovsky | 141 | jmpl $gdtselector(KTEXT_DES), $start64 |
164 | palkovsky | 142 | |
188 | palkovsky | 143 | .code64 |
144 | start64: |
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275 | palkovsky | 145 | movq $(PA2KA(START_STACK)), %rsp |
695 | decky | 146 | movl grub_eax, %eax |
147 | movl grub_ebx, %ebx |
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148 | |||
149 | cmpl $MULTIBOOT_LOADER_MAGIC, %eax # compare GRUB signature |
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150 | je valid_boot |
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151 | |||
152 | xorl %ecx, %ecx # no memory size or map available |
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153 | movl %ecx, e801memorysize |
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154 | movl %ecx, e820counter |
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155 | |||
156 | jmp invalid_boot |
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157 | |||
158 | valid_boot: |
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159 | |||
160 | movl (%ebx), %eax # ebx = physical address of struct multiboot_info |
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161 | |||
162 | bt $0, %eax # mbi->flags[0] (mem_lower, mem_upper valid) |
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163 | jc mem_valid |
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164 | |||
165 | xorl %ecx, %ecx |
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166 | jmp mem_invalid |
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167 | |||
168 | mem_valid: |
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169 | movl 4(%ebx), %ecx # mbi->mem_lower |
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170 | addl 8(%ebx), %ecx # mbi->mem_upper |
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171 | |||
172 | mem_invalid: |
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173 | movl %ecx, e801memorysize |
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174 | |||
1039 | decky | 175 | bt $3, %eax # mbi->flags[3] (mods_count, mods_addr valid) |
695 | decky | 176 | jc mods_valid |
177 | |||
1052 | decky | 178 | xorq %rcx, %rcx |
179 | movq %rcx, init |
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1039 | decky | 180 | jmp mods_end |
695 | decky | 181 | |
182 | mods_valid: |
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1039 | decky | 183 | |
184 | xorq %rcx, %rcx |
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695 | decky | 185 | movl 20(%ebx), %ecx # mbi->mods_count |
1052 | decky | 186 | movq %rcx, init |
1039 | decky | 187 | |
695 | decky | 188 | cmpl $0, %ecx |
1039 | decky | 189 | je mods_end |
695 | decky | 190 | |
191 | movl 24(%ebx), %esi # mbi->mods_addr |
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1039 | decky | 192 | movq $init, %rdi |
695 | decky | 193 | |
1039 | decky | 194 | mods_loop: |
195 | |||
196 | xorq %rdx, %rdx |
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197 | movl 0(%esi), %edx # mods->mod_start |
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1063 | palkovsky | 198 | movq $0xffff800000000000, %r10 |
199 | addq %r10, %rdx |
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1052 | decky | 200 | movq %rdx, 8(%rdi) |
1039 | decky | 201 | |
202 | xorq %rdx, %rdx |
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203 | movl 4(%esi), %edx |
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204 | subl 0(%esi), %edx # mods->mod_end - mods->mod_start |
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1052 | decky | 205 | movq %rdx, 16(%rdi) |
1039 | decky | 206 | |
207 | addl $16, %esi |
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208 | addq $16, %rdi |
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209 | |||
210 | loop mods_loop |
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211 | |||
212 | mods_end: |
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695 | decky | 213 | |
214 | bt $6, %eax # mbi->flags[6] (mmap_length, mmap_addr valid) |
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215 | jc mmap_valid |
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216 | |||
217 | xorl %edx, %edx |
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218 | jmp mmap_invalid |
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219 | |||
220 | mmap_valid: |
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221 | movl 44(%ebx), %ecx # mbi->mmap_length |
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222 | movl 48(%ebx), %esi # mbi->mmap_addr |
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223 | movq $e820table, %rdi |
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224 | xorl %edx, %edx |
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225 | |||
226 | mmap_loop: |
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227 | cmpl $0, %ecx |
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228 | jle mmap_end |
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229 | |||
230 | movl 4(%esi), %eax # mmap->base_addr_low |
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231 | movl %eax, (%rdi) |
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232 | |||
233 | movl 8(%esi), %eax # mmap->base_addr_high |
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234 | movl %eax, 4(%rdi) |
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235 | |||
236 | movl 12(%esi), %eax # mmap->length_low |
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237 | movl %eax, 8(%rdi) |
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238 | |||
239 | movl 16(%esi), %eax # mmap->length_high |
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240 | movl %eax, 12(%rdi) |
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241 | |||
242 | movl 20(%esi), %eax # mmap->type |
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243 | movl %eax, 16(%rdi) |
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244 | |||
245 | movl (%esi), %eax # mmap->size |
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246 | addl $0x4, %eax |
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247 | addl %eax, %esi |
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248 | subl %eax, %ecx |
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249 | addq $MEMMAP_E820_RECORD_SIZE, %rdi |
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250 | incl %edx |
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251 | jmp mmap_loop |
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252 | |||
253 | mmap_end: |
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254 | |||
255 | mmap_invalid: |
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256 | movl %edx, e820counter |
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257 | |||
258 | invalid_boot: |
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259 | |||
696 | decky | 260 | #ifdef CONFIG_SMP |
261 | |||
262 | # copy AP bootstrap routines below 1 MB |
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263 | |||
264 | movq $BOOT_OFFSET, %rsi |
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265 | movq $AP_BOOT_OFFSET, %rdi |
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266 | movq $_hardcoded_unmapped_size, %rcx |
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267 | cld |
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268 | rep movsb |
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269 | |||
270 | #endif |
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271 | |||
694 | decky | 272 | call main_bsp # never returns |
178 | palkovsky | 273 | |
694 | decky | 274 | cli |
275 | hlt |
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1289 | vana | 276 | |
277 | #ifdef CONFIG_FB |
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278 | .code32 |
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279 | vesa_init: |
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1641 | decky | 280 | jmp $gdtselector(VESA_INIT_DES), $vesa_init_real - vesa_init |
281 | |||
1289 | vana | 282 | .code16 |
1641 | decky | 283 | vesa_init_real: |
1289 | vana | 284 | |
1641 | decky | 285 | mov %cr0, %eax |
286 | and $~1, %eax |
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287 | mov %eax, %cr0 |
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288 | |||
289 | jmp $VESA_INIT_SEGMENT, $vesa_init_real2 - vesa_init |
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290 | |||
291 | vesa_init_real2: |
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292 | |||
293 | mov $VESA_INIT_SEGMENT, %bx |
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294 | |||
295 | mov %bx, %es |
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296 | mov %bx, %fs |
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297 | mov %bx, %gs |
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298 | mov %bx, %ds |
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299 | mov %bx, %ss |
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300 | |||
301 | movl $0x0000fffc, %esp |
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302 | movl $0x0000fffc, %ebp |
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303 | |||
1289 | vana | 304 | #define VESA_INFO_SIZE 1024 |
305 | |||
1641 | decky | 306 | #define VESA_MODE_LIST_PTR_OFFSET 14 |
1289 | vana | 307 | #define VESA_MODE_WIDTH_OFFSET 18 |
308 | #define VESA_MODE_HEIGHT_OFFSET 20 |
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309 | #define VESA_MODE_BPP_OFFSET 25 |
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310 | #define VESA_MODE_SCANLINE_OFFSET 16 |
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311 | #define VESA_MODE_PHADDR_OFFSET 40 |
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312 | |||
1641 | decky | 313 | #define VESA_END_OF_MODES 0xffff |
1289 | vana | 314 | |
1641 | decky | 315 | #define VESA_OK 0x4f |
1289 | vana | 316 | |
1641 | decky | 317 | #define VESA_GET_INFO 0x4f00 |
1289 | vana | 318 | #define VESA_GET_MODE_INFO 0x4f01 |
319 | #define VESA_SET_MODE 0x4f02 |
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320 | |||
321 | #define CONFIG_VESA_BPP_a 255 |
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322 | |||
1641 | decky | 323 | #if CONFIG_VESA_BPP == 24 |
1289 | vana | 324 | #undef CONFIG_VESA_BPP_a |
325 | #define CONFIG_VESA_BPP_a 32 |
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326 | #endif |
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1641 | decky | 327 | |
328 | mov $VESA_GET_INFO, %ax |
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329 | mov $e_vesa_init - vesa_init, %di |
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330 | push %di |
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331 | int $0x10 |
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332 | |||
333 | pop %di |
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334 | cmp $VESA_OK, %al |
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335 | jnz 0f |
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336 | |||
337 | mov 2 + VESA_MODE_LIST_PTR_OFFSET(%di), %si |
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338 | mov %si, %gs |
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339 | mov VESA_MODE_LIST_PTR_OFFSET(%di), %si |
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340 | |||
341 | add $VESA_INFO_SIZE, %di |
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342 | |||
1289 | vana | 343 | 1:# Try next mode |
1641 | decky | 344 | mov %gs:(%si), %cx |
345 | cmp $VESA_END_OF_MODES, %cx |
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346 | jz 0f |
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347 | |||
348 | inc %si |
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349 | inc %si |
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350 | push %cx |
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351 | push %di |
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352 | push %si |
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353 | mov $VESA_GET_MODE_INFO, %ax |
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354 | int $0x10 |
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355 | |||
356 | pop %si |
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357 | pop %di |
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358 | pop %cx |
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359 | cmp $VESA_OK, %al |
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360 | jnz 0f |
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361 | |||
362 | mov $CONFIG_VESA_WIDTH, %ax |
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363 | cmp VESA_MODE_WIDTH_OFFSET(%di), %ax |
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364 | jnz 1b |
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365 | |||
366 | mov $CONFIG_VESA_HEIGHT, %ax |
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367 | cmp VESA_MODE_HEIGHT_OFFSET(%di), %ax |
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368 | jnz 1b |
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369 | |||
370 | mov $CONFIG_VESA_BPP, %al |
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371 | cmp VESA_MODE_BPP_OFFSET(%di), %al |
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372 | jz 2f |
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373 | |||
374 | mov $CONFIG_VESA_BPP_a, %al |
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375 | cmp VESA_MODE_BPP_OFFSET(%di), %al |
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376 | jnz 1b |
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377 | |||
1289 | vana | 378 | 2: |
379 | |||
1641 | decky | 380 | mov %cx, %bx |
381 | or $0xc000, %bx |
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382 | push %di |
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383 | mov $VESA_SET_MODE, %ax |
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384 | int $0x10 |
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1289 | vana | 385 | |
1641 | decky | 386 | pop %di |
387 | cmp $VESA_OK, %al |
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388 | jnz 0f |
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1289 | vana | 389 | |
1641 | decky | 390 | mov VESA_MODE_PHADDR_OFFSET(%di), %esi |
391 | mov VESA_MODE_WIDTH_OFFSET(%di), %ax |
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392 | shl $16, %eax |
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393 | mov VESA_MODE_HEIGHT_OFFSET(%di), %ax |
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394 | mov VESA_MODE_BPP_OFFSET(%di), %bl |
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395 | xor %bh, %bh |
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396 | shl $16, %ebx |
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397 | mov VESA_MODE_SCANLINE_OFFSET(%di), %bx |
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398 | mov %eax, %edi |
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399 | |||
400 | 8: |
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401 | |||
402 | mov %cr0, %eax |
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403 | or $1, %eax |
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404 | mov %eax, %cr0 |
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405 | |||
406 | jmp 9f |
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1289 | vana | 407 | 9: |
1641 | decky | 408 | |
409 | ljmpl $gdtselector(KTEXT32_DES), $(vesa_init_protect - vesa_init + VESA_INIT_SEGMENT << 4) |
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410 | |||
411 | 0:# No prefered mode found |
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412 | mov $0x111, %cx |
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413 | push %di |
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414 | push %cx |
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415 | mov $VESA_GET_MODE_INFO, %ax |
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416 | int $0x10 |
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417 | |||
418 | pop %cx |
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419 | pop %di |
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420 | cmp $VESA_OK, %al |
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421 | jnz 1f |
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422 | jz 2b # Force relative jump |
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1289 | vana | 423 | |
1641 | decky | 424 | 1: |
425 | mov $0x0003, %ax |
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426 | int $0x10 |
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427 | mov $0xffffffff, %edi # EGA text mode used, because of problems with VESA |
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428 | xor %ax, %ax |
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429 | jz 8b # Force relative jump |
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430 | |||
431 | |||
1289 | vana | 432 | .code32 |
1641 | decky | 433 | vesa_init_protect: |
434 | movw $gdtselector(KDATA_DES), %cx |
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435 | movw %cx, %es |
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436 | movw %cx, %ds # kernel data + stack |
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437 | movw %cx, %ss |
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438 | # Simics seems to remove hidden part of GS on entering user mode |
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439 | # when _visible_ part of GS does not point to user-mode segment |
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440 | movw $gdtselector(UDATA_DES), %cx |
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441 | movw %cx, %fs |
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442 | movw %cx, %gs |
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443 | |||
444 | jmpl $gdtselector(KTEXT32_DES), $vesa_meeting_point |
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445 | |||
1289 | vana | 446 | .align 4 |
447 | e_vesa_init: |
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448 | #endif |
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206 | palkovsky | 449 | |
406 | jermar | 450 | .section K_DATA_START, "aw", @progbits |
164 | palkovsky | 451 | .align 4096 |
206 | palkovsky | 452 | |
417 | palkovsky | 453 | # Identical mapping of first 64MB and the same of -2GB -> 0 |
188 | palkovsky | 454 | .global ptl_2 |
455 | ptl_2: |
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456 | .quad 0x0 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
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457 | .quad 0x200000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
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458 | .quad 0x400000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
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459 | .quad 0x600000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
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460 | .quad 0x800000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
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461 | .quad 0xa00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
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462 | .quad 0xc00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
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463 | .quad 0xe00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
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417 | palkovsky | 464 | .quad 0x1000000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
465 | .quad 0x1200000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
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466 | .quad 0x1400000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
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467 | .quad 0x1600000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
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468 | .quad 0x1800000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
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469 | .quad 0x1a00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
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470 | .quad 0x1c00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
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471 | .quad 0x1e00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
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472 | .quad 0x2000000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
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473 | .quad 0x2200000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
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474 | .quad 0x2400000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
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475 | .quad 0x2600000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
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476 | .quad 0x2800000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
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477 | .quad 0x2a00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
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478 | .quad 0x2c00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
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479 | .quad 0x2e00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
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480 | .quad 0x3000000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
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481 | .quad 0x3200000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
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482 | .quad 0x3400000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
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483 | .quad 0x3600000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
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484 | .quad 0x3800000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
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485 | .quad 0x3a00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
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486 | .quad 0x3c00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
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487 | .quad 0x3e00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
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188 | palkovsky | 488 | |
489 | .align 4096 |
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490 | .global ptl_1 |
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491 | ptl_1: |
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492 | .quad ptl_2 + (PTL_WRITABLE | PTL_PRESENT) |
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493 | .fill 509,8,0 |
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494 | .quad ptl_2 + (PTL_WRITABLE | PTL_PRESENT) |
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293 | palkovsky | 495 | .fill 1,8,0 |
188 | palkovsky | 496 | |
497 | .align 4096 |
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498 | .global ptl_0 |
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499 | ptl_0: |
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500 | .quad ptl_1 + (PTL_WRITABLE | PTL_PRESENT) |
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1063 | palkovsky | 501 | .fill 255,8,0 |
188 | palkovsky | 502 | .quad ptl_1 + (PTL_WRITABLE | PTL_PRESENT) |
1063 | palkovsky | 503 | .fill 254,8,0 |
504 | .quad ptl_1 + (PTL_WRITABLE | PTL_PRESENT) |
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178 | palkovsky | 505 | |
695 | decky | 506 | .global bootstrap_gdtr |
507 | bootstrap_gdtr: |
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685 | decky | 508 | .word gdtselector(GDT_ITEMS) |
509 | .long KA2PA(gdt) |
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695 | decky | 510 | |
511 | grub_eax: |
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512 | .long 0 |
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513 | |||
514 | grub_ebx: |
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515 | .long 0 |