Changes in kernel/arch/amd64/src/boot/boot.S [304342e:1d3d2cf] in mainline
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kernel/arch/amd64/src/boot/boot.S (modified) (18 diffs)
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kernel/arch/amd64/src/boot/boot.S
r304342e r1d3d2cf 1 # 2 #Copyright (c) 2005 Ondrej Palkovsky3 #Copyright (c) 2006 Martin Decky4 #Copyright (c) 2008 Jakub Jermar5 #All rights reserved.6 # 7 #Redistribution and use in source and binary forms, with or without8 #modification, are permitted provided that the following conditions9 #are met:10 # 11 #- Redistributions of source code must retain the above copyright12 #notice, this list of conditions and the following disclaimer.13 #- Redistributions in binary form must reproduce the above copyright14 #notice, this list of conditions and the following disclaimer in the15 #documentation and/or other materials provided with the distribution.16 #- The name of the author may not be used to endorse or promote products17 #derived from this software without specific prior written permission.18 # 19 #THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR20 #IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES21 #OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.22 #IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,23 #INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT24 #NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,25 #DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY26 #THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT27 #(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF28 #THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.29 # 1 /* 2 * Copyright (c) 2005 Ondrej Palkovsky 3 * Copyright (c) 2006 Martin Decky 4 * Copyright (c) 2008 Jakub Jermar 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * - Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * - Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * - The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 30 31 31 #include <arch/boot/boot.h> 32 32 #include <arch/boot/memmap.h> 33 #include <arch/mm/page.h> 33 #include <arch/mm/page.h> 34 34 #include <arch/mm/ptl.h> 35 35 #include <arch/pm.h> … … 37 37 #include <arch/cpuid.h> 38 38 39 #define START_STACK 39 #define START_STACK (BOOT_OFFSET - BOOT_STACK_SIZE) 40 40 41 41 .section K_TEXT_START, "ax" 42 42 43 43 .code32 44 45 .macro pm_error msg 46 movl \msg, %esi 47 jmp pm_error_halt 48 .endm 49 50 .macro pm_status msg 51 #ifdef CONFIG_EGA 52 pushl %esi 53 movl \msg, %esi 54 call pm_early_puts 55 popl %esi 56 #endif 57 .endm 58 59 .macro pm2_status msg 60 #ifndef CONFIG_FB 61 pm_status \msg 62 #endif 63 .endm 64 44 65 .align 4 45 66 .global multiboot_image_start … … 47 68 .long MULTIBOOT_HEADER_MAGIC 48 69 .long MULTIBOOT_HEADER_FLAGS 49 .long -(MULTIBOOT_HEADER_MAGIC + MULTIBOOT_HEADER_FLAGS) # checksum70 .long -(MULTIBOOT_HEADER_MAGIC + MULTIBOOT_HEADER_FLAGS) /* checksum */ 50 71 .long multiboot_header 51 72 .long unmapped_ktext_start … … 56 77 multiboot_image_start: 57 78 cld 58 movl $START_STACK, %esp # initialize stack pointer 59 lgdtl bootstrap_gdtr # initialize Global Descriptor Table register 60 61 movw $gdtselector(KDATA_DES), %cx 79 80 /* Initialize stack pointer */ 81 movl $START_STACK, %esp 82 83 /* Initialize Global Descriptor Table register */ 84 lgdtl bootstrap_gdtr 85 86 /* Kernel data + stack */ 87 movw $GDT_SELECTOR(KDATA_DES), %cx 62 88 movw %cx, %es 63 movw %cx, %ds # kernel data + stack89 movw %cx, %ds 64 90 movw %cx, %ss 65 91 66 # 67 # Simics seems to remove hidden part of GS on entering user mode 68 # when _visible_ part of GS does not point to user-mode segment. 69 # 70 71 movw $gdtselector(UDATA_DES), %cx 92 /* 93 * Simics seems to remove hidden part of GS on entering user mode 94 * when _visible_ part of GS does not point to user-mode segment. 95 */ 96 movw $GDT_SELECTOR(UDATA_DES), %cx 72 97 movw %cx, %fs 73 98 movw %cx, %gs 74 99 75 jmpl $ gdtselector(KTEXT32_DES), $multiboot_meeting_point100 jmpl $GDT_SELECTOR(KTEXT32_DES), $multiboot_meeting_point 76 101 multiboot_meeting_point: 77 102 78 movl %eax, grub_eax # save parameters from GRUB 103 /* Save GRUB arguments */ 104 movl %eax, grub_eax 79 105 movl %ebx, grub_ebx 80 106 81 # 82 # Protected 32-bit. We want to reuse the code-seg descriptor, 83 # the Default operand size must not be 1 when entering long mode. 84 # 107 pm_status $status_prot 85 108 86 109 movl $(INTEL_CPUID_EXTENDED), %eax … … 89 112 ja extended_cpuid_supported 90 113 91 movl $extended_cpuid_msg, %esi 92 jmp error_halt 114 pm_error $err_extended_cpuid 93 115 94 116 extended_cpuid_supported: … … 99 121 jc long_mode_supported 100 122 101 movl $long_mode_msg, %esi 102 jmp error_halt 123 pm_error $err_long_mode 103 124 104 125 long_mode_supported: … … 107 128 jc noexecute_supported 108 129 109 movl $noexecute_msg, %esi 110 jmp error_halt 130 pm_error $err_noexecute 111 131 112 132 noexecute_supported: … … 117 137 jc fx_supported 118 138 119 movl $fx_msg, %esi 120 jmp error_halt 139 pm_error $err_fx 121 140 122 141 fx_supported: … … 125 144 jc sse2_supported 126 145 127 movl $sse2_msg, %esi 128 jmp error_halt 146 pm_error $err_sse2 129 147 130 148 sse2_supported: 131 149 132 150 #include "vesa_prot.inc" 133 134 # 135 # Enable 64-bit page translation entries - CR4.PAE = 1. 136 # Paging is not enabled until after long mode is enabled. 137 # 151 152 /* 153 * Protected 32-bit. We want to reuse the code-seg descriptor, 154 * the Default operand size must not be 1 when entering long mode. 155 */ 156 157 pm2_status $status_prot2 158 159 /* 160 * Enable 64-bit page translation entries - CR4.PAE = 1. 161 * Paging is not enabled until after long mode is enabled. 162 */ 138 163 139 164 movl %cr4, %eax … … 141 166 movl %eax, %cr4 142 167 143 # set up paging tables 144 168 /* Set up paging tables */ 145 169 leal ptl_0, %eax 146 170 movl %eax, %cr3 147 171 148 # enable long mode 149 150 movl $EFER_MSR_NUM, %ecx # EFER MSR number 151 rdmsr # read EFER 152 btsl $AMD_LME_FLAG, %eax # set LME = 1 153 wrmsr # write EFER 154 155 # enable paging to activate long mode (set CR0.PG = 1) 156 172 /* Enable long mode */ 173 movl $EFER_MSR_NUM, %ecx 174 rdmsr /* read EFER */ 175 btsl $AMD_LME_FLAG, %eax /* set LME = 1 */ 176 wrmsr 177 178 /* Enable paging to activate long mode (set CR0.PG = 1) */ 157 179 movl %cr0, %eax 158 180 btsl $31, %eax 159 181 movl %eax, %cr0 160 182 161 # at this point we are in compatibility mode 162 163 jmpl $gdtselector(KTEXT_DES), $start64 183 /* At this point we are in compatibility mode */ 184 jmpl $GDT_SELECTOR(KTEXT_DES), $start64 185 186 /** Print string to EGA display (in light red) and halt. 187 * 188 * Should be executed from 32 bit protected mode with paging 189 * turned off. Stack is not required. This routine is used even 190 * if CONFIG_EGA is not enabled. Since we are going to halt the 191 * CPU anyway, it is always better to at least try to print 192 * some hints. 193 * 194 * @param %esi Pointer to the NULL-terminated string 195 * to be print. 196 * 197 */ 198 pm_error_halt: 199 movl $0xb8000, %edi /* base of EGA text mode memory */ 200 xorl %eax, %eax 201 202 /* Read bits 8 - 15 of the cursor address */ 203 movw $0x3d4, %dx 204 movb $0xe, %al 205 outb %al, %dx 206 207 movw $0x3d5, %dx 208 inb %dx, %al 209 shl $8, %ax 210 211 /* Read bits 0 - 7 of the cursor address */ 212 movw $0x3d4, %dx 213 movb $0xf, %al 214 outb %al, %dx 215 216 movw $0x3d5, %dx 217 inb %dx, %al 218 219 /* Sanity check for the cursor on screen */ 220 cmp $2000, %ax 221 jb err_cursor_ok 222 223 movw $1998, %ax 224 225 err_cursor_ok: 226 227 movw %ax, %bx 228 shl $1, %eax 229 addl %eax, %edi 230 231 err_ploop: 232 lodsb 233 234 cmp $0, %al 235 je err_ploop_end 236 237 movb $0x0c, %ah /* black background, light red foreground */ 238 stosw 239 240 /* Sanity check for the cursor on the last line */ 241 inc %bx 242 cmp $2000, %bx 243 jb err_ploop 244 245 /* Scroll the screen (24 rows) */ 246 movl %esi, %edx 247 movl $0xb80a0, %esi 248 movl $0xb8000, %edi 249 movl $960, %ecx 250 rep movsl 251 252 /* Clear the 24th row */ 253 xorl %eax, %eax 254 movl $40, %ecx 255 rep stosl 256 257 /* Go to row 24 */ 258 movl %edx, %esi 259 movl $0xb8f00, %edi 260 movw $1920, %bx 261 262 jmp err_ploop 263 err_ploop_end: 264 265 /* Write bits 8 - 15 of the cursor address */ 266 movw $0x3d4, %dx 267 movb $0xe, %al 268 outb %al, %dx 269 270 movw $0x3d5, %dx 271 movb %bh, %al 272 outb %al, %dx 273 274 /* Write bits 0 - 7 of the cursor address */ 275 movw $0x3d4, %dx 276 movb $0xf, %al 277 outb %al, %dx 278 279 movw $0x3d5, %dx 280 movb %bl, %al 281 outb %al, %dx 282 283 cli 284 hlt1: 285 hlt 286 jmp hlt1 287 288 /** Print string to EGA display (in light green). 289 * 290 * Should be called from 32 bit protected mode with paging 291 * turned off. A stack space of at least 24 bytes is required, 292 * but the function does not establish a stack frame. 293 * 294 * Macros such as pm_status and pm2_status take care that 295 * this function is used only when CONFIG_EGA is enabled 296 * and CONFIG_FB is disabled. 297 * 298 * @param %esi Pointer to the NULL-terminated string 299 * to be print. 300 * 301 */ 302 pm_early_puts: 303 pushl %eax 304 pushl %ebx 305 pushl %ecx 306 pushl %edx 307 pushl %edi 308 309 movl $0xb8000, %edi /* base of EGA text mode memory */ 310 xorl %eax, %eax 311 312 /* Read bits 8 - 15 of the cursor address */ 313 movw $0x3d4, %dx 314 movb $0xe, %al 315 outb %al, %dx 316 317 movw $0x3d5, %dx 318 inb %dx, %al 319 shl $8, %ax 320 321 /* Read bits 0 - 7 of the cursor address */ 322 movw $0x3d4, %dx 323 movb $0xf, %al 324 outb %al, %dx 325 326 movw $0x3d5, %dx 327 inb %dx, %al 328 329 /* Sanity check for the cursor on screen */ 330 cmp $2000, %ax 331 jb pm_puts_cursor_ok 332 333 movw $1998, %ax 334 335 pm_puts_cursor_ok: 336 337 movw %ax, %bx 338 shl $1, %eax 339 addl %eax, %edi 340 341 pm_puts_ploop: 342 lodsb 343 344 cmp $0, %al 345 je pm_puts_ploop_end 346 347 movb $0x0a, %ah /* black background, light green foreground */ 348 stosw 349 350 /* Sanity check for the cursor on the last line */ 351 inc %bx 352 cmp $2000, %bx 353 jb pm_puts_ploop 354 355 /* Scroll the screen (24 rows) */ 356 movl %esi, %edx 357 movl $0xb80a0, %esi 358 movl $0xb8000, %edi 359 movl $960, %ecx 360 rep movsl 361 362 /* Clear the 24th row */ 363 xorl %eax, %eax 364 movl $40, %ecx 365 rep stosl 366 367 /* Go to row 24 */ 368 movl %edx, %esi 369 movl $0xb8f00, %edi 370 movw $1920, %bx 371 372 jmp pm_puts_ploop 373 pm_puts_ploop_end: 374 375 /* Write bits 8 - 15 of the cursor address */ 376 movw $0x3d4, %dx 377 movb $0xe, %al 378 outb %al, %dx 379 380 movw $0x3d5, %dx 381 movb %bh, %al 382 outb %al, %dx 383 384 /* Write bits 0 - 7 of the cursor address */ 385 movw $0x3d4, %dx 386 movb $0xf, %al 387 outb %al, %dx 388 389 movw $0x3d5, %dx 390 movb %bl, %al 391 outb %al, %dx 392 393 popl %edi 394 popl %edx 395 popl %ecx 396 popl %ebx 397 popl %eax 398 399 ret 164 400 165 401 .code64 402 403 .macro long_status msg 404 pushq %rdi 405 movq \msg, %rdi 406 call early_puts 407 popq %rdi 408 .endm 409 166 410 start64: 411 412 /* 413 * Long mode. 414 */ 415 167 416 movq $(PA2KA(START_STACK)), %rsp 168 417 169 # call arch_pre_main(grub_eax, grub_ebx) 418 /* Create the first stack frame */ 419 pushq $0 420 movq %rsp, %rbp 421 422 long_status $status_long 423 424 /* Call arch_pre_main(grub_eax, grub_ebx) */ 170 425 xorq %rdi, %rdi 171 426 movl grub_eax, %edi 172 427 xorq %rsi, %rsi 173 428 movl grub_ebx, %esi 174 call arch_pre_main 175 176 # create the first stack frame 177 pushq $0 178 movq %rsp, %rbp 179 180 call main_bsp 181 182 # not reached 183 429 430 movabsq $arch_pre_main, %rax 431 callq *%rax 432 433 long_status $status_main 434 435 /* Call main_bsp() */ 436 movabsq $main_bsp, %rax 437 call *%rax 438 439 /* Not reached */ 184 440 cli 185 441 hlt0: … … 187 443 jmp hlt0 188 444 189 # Print string from %esi to EGA display (in red) and halt 190 error_halt: 191 movl $0xb8000, %edi # base of EGA text mode memory 192 xorl %eax, %eax 193 194 movw $0x3d4, %dx # read bits 8 - 15 of the cursor address 445 /** Print string to EGA display. 446 * 447 * Should be called from long mode (with paging enabled 448 * and stack established). This function is ABI compliant 449 * (without red-zone). 450 * 451 * If CONFIG_EGA is undefined or CONFIG_FB is defined 452 * then this function does nothing. 453 * 454 * @param %rdi Pointer to the NULL-terminated string 455 * to be printed. 456 * 457 */ 458 early_puts: 459 460 #if ((defined(CONFIG_EGA)) && (!defined(CONFIG_FB))) 461 462 /* Prologue, save preserved registers */ 463 pushq %rbp 464 movq %rsp, %rbp 465 pushq %rbx 466 467 movq %rdi, %rsi 468 movq $(PA2KA(0xb8000)), %rdi /* base of EGA text mode memory */ 469 xorq %rax, %rax 470 471 /* Read bits 8 - 15 of the cursor address */ 472 movw $0x3d4, %dx 195 473 movb $0xe, %al 196 474 outb %al, %dx … … 200 478 shl $8, %ax 201 479 202 movw $0x3d4, %dx # read bits 0 - 7 of the cursor address 480 /* Read bits 0 - 7 of the cursor address */ 481 movw $0x3d4, %dx 203 482 movb $0xf, %al 204 483 outb %al, %dx … … 207 486 inb %dx, %al 208 487 209 cmp $1920, %ax 210 jbe cursor_ok 211 212 movw $1920, %ax # sanity check for the cursor on the last line 213 214 cursor_ok: 488 /* Sanity check for the cursor on screen */ 489 cmp $2000, %ax 490 jb early_puts_cursor_ok 491 492 movw $1998, %ax 493 494 early_puts_cursor_ok: 215 495 216 496 movw %ax, %bx 217 shl $1, %eax 218 addl %eax, %edi 219 220 movw $0x0c00, %ax # black background, light red foreground 221 222 ploop: 497 shl $1, %rax 498 addq %rax, %rdi 499 500 early_puts_ploop: 223 501 lodsb 502 224 503 cmp $0, %al 225 je ploop_end 504 je early_puts_ploop_end 505 506 movb $0x0e, %ah /* black background, yellow foreground */ 226 507 stosw 508 509 /* Sanity check for the cursor on the last line */ 227 510 inc %bx 228 jmp ploop 229 ploop_end: 230 231 movw $0x3d4, %dx # write bits 8 - 15 of the cursor address 511 cmp $2000, %bx 512 jb early_puts_ploop 513 514 /* Scroll the screen (24 rows) */ 515 movq %rsi, %rdx 516 movq $(PA2KA(0xb80a0)), %rsi 517 movq $(PA2KA(0xb8000)), %rdi 518 movq $480, %rcx 519 rep movsq 520 521 /* Clear the 24th row */ 522 xorq %rax, %rax 523 movq $20, %rcx 524 rep stosq 525 526 /* Go to row 24 */ 527 movq %rdx, %rsi 528 movq $(PA2KA(0xb8f00)), %rdi 529 movw $1920, %bx 530 531 jmp early_puts_ploop 532 early_puts_ploop_end: 533 534 /* Write bits 8 - 15 of the cursor address */ 535 movw $0x3d4, %dx 232 536 movb $0xe, %al 233 537 outb %al, %dx … … 237 541 outb %al, %dx 238 542 239 movw $0x3d4, %dx # write bits 0 - 7 of the cursor address 543 /* Write bits 0 - 7 of the cursor address */ 544 movw $0x3d4, %dx 240 545 movb $0xf, %al 241 546 outb %al, %dx … … 245 550 outb %al, %dx 246 551 247 cli 248 hlt1: 249 hlt 250 jmp hlt1 552 /* Epilogue, restore preserved registers */ 553 popq %rbx 554 leave 555 556 #endif 557 558 ret 251 559 252 560 #include "vesa_real.inc" … … 254 562 .section K_INI_PTLS, "aw", @progbits 255 563 256 # 257 # Macro for generating initial page table contents. 258 # @param cnt Number of entries to generat. Must be multiple of 8. 259 # @param g Number of GB that will be added to the mapping. 260 # 261 .macro ptl2gen cnt g 262 .if \cnt 263 ptl2gen "\cnt - 8" \g 264 .quad ((\cnt - 8) * 0x200000) + (\g * 1024 * 1024 * 1024) | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) 265 .quad ((\cnt - 7) * 0x200000) + (\g * 1024 * 1024 * 1024) | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) 266 .quad ((\cnt - 6) * 0x200000) + (\g * 1024 * 1024 * 1024) | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) 267 .quad ((\cnt - 5) * 0x200000) + (\g * 1024 * 1024 * 1024) | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) 268 .quad ((\cnt - 4) * 0x200000) + (\g * 1024 * 1024 * 1024) | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) 269 .quad ((\cnt - 3) * 0x200000) + (\g * 1024 * 1024 * 1024) | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) 270 .quad ((\cnt - 2) * 0x200000) + (\g * 1024 * 1024 * 1024) | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) 271 .quad ((\cnt - 1) * 0x200000) + (\g * 1024 * 1024 * 1024) | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) 272 .endif 564 /** Generate initial page table contents. 565 * 566 * @param cnt Number of entries to generate. Must be multiple of 8. 567 * @param g Number of GB that will be added to the mapping. 568 * 569 */ 570 .macro ptl2gen cnt g 571 .if \cnt 572 ptl2gen "\cnt - 8" \g 573 .quad ((\cnt - 8) * 0x200000) + (\g * 1024 * 1024 * 1024) | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) 574 .quad ((\cnt - 7) * 0x200000) + (\g * 1024 * 1024 * 1024) | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) 575 .quad ((\cnt - 6) * 0x200000) + (\g * 1024 * 1024 * 1024) | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) 576 .quad ((\cnt - 5) * 0x200000) + (\g * 1024 * 1024 * 1024) | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) 577 .quad ((\cnt - 4) * 0x200000) + (\g * 1024 * 1024 * 1024) | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) 578 .quad ((\cnt - 3) * 0x200000) + (\g * 1024 * 1024 * 1024) | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) 579 .quad ((\cnt - 2) * 0x200000) + (\g * 1024 * 1024 * 1024) | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) 580 .quad ((\cnt - 1) * 0x200000) + (\g * 1024 * 1024 * 1024) | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) 581 .endif 273 582 .endm 274 583 275 # Page table for pages in the first gigabyte. 276 .align 4096 277 .global ptl_2_0g 278 ptl_2_0g: 584 /* Page table for pages in the 1st gigabyte. */ 585 .align 4096 586 ptl_2_0g: 279 587 ptl2gen 512 0 280 588 281 # Page table for pages in the second gigabyte. 282 .align 4096 283 .global ptl_2_1g 589 /* Page table for pages in the 2nd gigabyte. */ 590 .align 4096 284 591 ptl_2_1g: 285 592 ptl2gen 512 1 286 593 287 # Page table for pages in the third gigabyte. 288 .align 4096 289 .global ptl_2_2g 594 /* Page table for pages in the 3rd gigabyte. */ 595 .align 4096 290 596 ptl_2_2g: 291 597 ptl2gen 512 2 292 598 293 # Page table for pages in the fourth gigabyte. 294 .align 4096 295 .global ptl_2_3g 599 /* Page table for pages in the 4th gigabyte. */ 600 .align 4096 296 601 ptl_2_3g: 297 602 ptl2gen 512 3 298 603 299 .align 4096 300 .global ptl_1 604 /* Page table for pages in the 5th gigabyte. */ 605 .align 4096 606 ptl_2_4g: 607 ptl2gen 512 4 608 609 /* Page table for pages in the 6th gigabyte. */ 610 .align 4096 611 ptl_2_5g: 612 ptl2gen 512 5 613 614 /* Page table for pages in the 7th gigabyte. */ 615 .align 4096 616 ptl_2_6g: 617 ptl2gen 512 6 618 619 /* Page table for pages in the 8th gigabyte. */ 620 .align 4096 621 ptl_2_7g: 622 ptl2gen 512 7 623 624 .align 4096 301 625 ptl_1: 302 # Identity mapping for [0; 4G)626 /* Identity mapping for [0; 8G) */ 303 627 .quad ptl_2_0g + (PTL_WRITABLE | PTL_PRESENT) 304 .quad ptl_2_1g + (PTL_WRITABLE | PTL_PRESENT) 628 .quad ptl_2_1g + (PTL_WRITABLE | PTL_PRESENT) 305 629 .quad ptl_2_2g + (PTL_WRITABLE | PTL_PRESENT) 306 630 .quad ptl_2_3g + (PTL_WRITABLE | PTL_PRESENT) 307 .fill 506, 8, 0 308 # Mapping of [0; 1G) at -2G 309 .quad ptl_2_0g + (PTL_WRITABLE | PTL_PRESENT) 310 .fill 1, 8, 0 631 .quad ptl_2_4g + (PTL_WRITABLE | PTL_PRESENT) 632 .quad ptl_2_5g + (PTL_WRITABLE | PTL_PRESENT) 633 .quad ptl_2_6g + (PTL_WRITABLE | PTL_PRESENT) 634 .quad ptl_2_7g + (PTL_WRITABLE | PTL_PRESENT) 635 .fill 504, 8, 0 311 636 312 637 .align 4096 … … 314 639 ptl_0: 315 640 .quad ptl_1 + (PTL_WRITABLE | PTL_PRESENT) 316 .fill 255, 8,0641 .fill 255, 8, 0 317 642 .quad ptl_1 + (PTL_WRITABLE | PTL_PRESENT) 318 .fill 254,8,0 319 .quad ptl_1 + (PTL_WRITABLE | PTL_PRESENT) 643 .fill 255, 8, 0 320 644 321 645 .section K_DATA_START, "aw", @progbits 322 646 323 .global bootstrap_gdtr324 647 bootstrap_gdtr: 325 .word gdtselector(GDT_ITEMS)648 .word GDT_SELECTOR(GDT_ITEMS) 326 649 .long KA2PA(gdt) 327 650 … … 332 655 .long 0 333 656 334 extended_cpuid_msg: 335 .asciz "Extended CPUID not supported. System halted." 336 long_mode_msg: 337 .asciz "64 bit long mode not supported. System halted." 338 noexecute_msg: 339 .asciz "No-execute pages not supported. System halted." 340 fx_msg: 341 .asciz "FXSAVE/FXRESTORE instructions not supported. System halted." 342 sse2_msg: 343 .asciz "SSE2 instructions not supported. System halted." 657 err_extended_cpuid: 658 .asciz "Error: Extended CPUID not supported -- CPU is not 64-bit. System halted." 659 err_long_mode: 660 .asciz "Error: 64-bit long mode not supported. System halted." 661 err_noexecute: 662 .asciz "Error: No-execute pages not supported. System halted." 663 err_fx: 664 .asciz "Error: FXSAVE/FXRESTORE instructions not supported. System halted." 665 err_sse2: 666 .asciz "Error: SSE2 instructions not supported. System halted." 667 668 status_prot: 669 .asciz "[prot] " 670 status_vesa_copy: 671 .asciz "[vesa_copy] " 672 status_grub_cmdline: 673 .asciz "[grub_cmdline] " 674 status_vesa_real: 675 .asciz "[vesa_real] " 676 status_prot2: 677 .asciz "[prot2] " 678 status_long: 679 .asciz "[long] " 680 status_main: 681 .asciz "[main] "
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