Changes in kernel/arch/amd64/src/boot/boot.S [1d3d2cf:304342e] in mainline
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kernel/arch/amd64/src/boot/boot.S (modified) (17 diffs)
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kernel/arch/amd64/src/boot/boot.S
r1d3d2cf r304342e 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 msg46 movl \msg, %esi47 jmp pm_error_halt48 .endm49 50 .macro pm_status msg51 #ifdef CONFIG_EGA52 pushl %esi53 movl \msg, %esi54 call pm_early_puts55 popl %esi56 #endif57 .endm58 59 .macro pm2_status msg60 #ifndef CONFIG_FB61 pm_status \msg62 #endif63 .endm64 65 44 .align 4 66 45 .global multiboot_image_start … … 68 47 .long MULTIBOOT_HEADER_MAGIC 69 48 .long MULTIBOOT_HEADER_FLAGS 70 .long -(MULTIBOOT_HEADER_MAGIC + MULTIBOOT_HEADER_FLAGS) /* checksum */49 .long -(MULTIBOOT_HEADER_MAGIC + MULTIBOOT_HEADER_FLAGS) # checksum 71 50 .long multiboot_header 72 51 .long unmapped_ktext_start … … 77 56 multiboot_image_start: 78 57 cld 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 58 movl $START_STACK, %esp # initialize stack pointer 59 lgdtl bootstrap_gdtr # initialize Global Descriptor Table register 60 61 movw $gdtselector(KDATA_DES), %cx 88 62 movw %cx, %es 89 movw %cx, %ds 63 movw %cx, %ds # kernel data + stack 90 64 movw %cx, %ss 91 65 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 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 97 72 movw %cx, %fs 98 73 movw %cx, %gs 99 74 100 jmpl $ GDT_SELECTOR(KTEXT32_DES), $multiboot_meeting_point75 jmpl $gdtselector(KTEXT32_DES), $multiboot_meeting_point 101 76 multiboot_meeting_point: 102 77 103 /* Save GRUB arguments */ 104 movl %eax, grub_eax 78 movl %eax, grub_eax # save parameters from GRUB 105 79 movl %ebx, grub_ebx 106 80 107 pm_status $status_prot 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 # 108 85 109 86 movl $(INTEL_CPUID_EXTENDED), %eax … … 112 89 ja extended_cpuid_supported 113 90 114 pm_error $err_extended_cpuid 91 movl $extended_cpuid_msg, %esi 92 jmp error_halt 115 93 116 94 extended_cpuid_supported: … … 121 99 jc long_mode_supported 122 100 123 pm_error $err_long_mode 101 movl $long_mode_msg, %esi 102 jmp error_halt 124 103 125 104 long_mode_supported: … … 128 107 jc noexecute_supported 129 108 130 pm_error $err_noexecute 109 movl $noexecute_msg, %esi 110 jmp error_halt 131 111 132 112 noexecute_supported: … … 137 117 jc fx_supported 138 118 139 pm_error $err_fx 119 movl $fx_msg, %esi 120 jmp error_halt 140 121 141 122 fx_supported: … … 144 125 jc sse2_supported 145 126 146 pm_error $err_sse2 127 movl $sse2_msg, %esi 128 jmp error_halt 147 129 148 130 sse2_supported: 149 131 150 132 #include "vesa_prot.inc" 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 */ 133 134 # 135 # Enable 64-bit page translation entries - CR4.PAE = 1. 136 # Paging is not enabled until after long mode is enabled. 137 # 163 138 164 139 movl %cr4, %eax … … 166 141 movl %eax, %cr4 167 142 168 /* Set up paging tables */ 143 # set up paging tables 144 169 145 leal ptl_0, %eax 170 146 movl %eax, %cr3 171 147 172 /* 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) */ 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) 156 179 157 movl %cr0, %eax 180 158 btsl $31, %eax 181 159 movl %eax, %cr0 182 160 183 /* 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 */ 161 # at this point we are in compatibility mode 162 163 jmpl $gdtselector(KTEXT_DES), $start64 164 165 .code64 166 start64: 167 movq $(PA2KA(START_STACK)), %rsp 168 169 # call arch_pre_main(grub_eax, grub_ebx) 170 xorq %rdi, %rdi 171 movl grub_eax, %edi 172 xorq %rsi, %rsi 173 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 183 184 cli 185 hlt0: 186 hlt 187 jmp hlt0 188 189 # Print string from %esi to EGA display (in red) and halt 190 error_halt: 191 movl $0xb8000, %edi # base of EGA text mode memory 200 192 xorl %eax, %eax 201 193 202 /* Read bits 8 - 15 of the cursor address */ 203 movw $0x3d4, %dx 194 movw $0x3d4, %dx # read bits 8 - 15 of the cursor address 204 195 movb $0xe, %al 205 196 outb %al, %dx … … 209 200 shl $8, %ax 210 201 211 /* Read bits 0 - 7 of the cursor address */ 212 movw $0x3d4, %dx 202 movw $0x3d4, %dx # read bits 0 - 7 of the cursor address 213 203 movb $0xf, %al 214 204 outb %al, %dx … … 217 207 inb %dx, %al 218 208 219 /* 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: 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: 226 215 227 216 movw %ax, %bx … … 229 218 addl %eax, %edi 230 219 231 err_ploop: 220 movw $0x0c00, %ax # black background, light red foreground 221 222 ploop: 232 223 lodsb 233 234 224 cmp $0, %al 235 je err_ploop_end 236 237 movb $0x0c, %ah /* black background, light red foreground */ 225 je ploop_end 238 226 stosw 239 240 /* Sanity check for the cursor on the last line */241 227 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 228 jmp ploop 229 ploop_end: 230 231 movw $0x3d4, %dx # write bits 8 - 15 of the cursor address 267 232 movb $0xe, %al 268 233 outb %al, %dx … … 272 237 outb %al, %dx 273 238 274 /* Write bits 0 - 7 of the cursor address */ 275 movw $0x3d4, %dx 239 movw $0x3d4, %dx # write bits 0 - 7 of the cursor address 276 240 movb $0xf, %al 277 241 outb %al, %dx … … 286 250 jmp hlt1 287 251 288 /** 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 400 401 .code64 402 403 .macro long_status msg 404 pushq %rdi 405 movq \msg, %rdi 406 call early_puts 407 popq %rdi 252 #include "vesa_real.inc" 253 254 .section K_INI_PTLS, "aw", @progbits 255 256 # 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 408 273 .endm 409 274 410 start64: 411 412 /* 413 * Long mode. 414 */ 415 416 movq $(PA2KA(START_STACK)), %rsp 417 418 /* 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) */ 425 xorq %rdi, %rdi 426 movl grub_eax, %edi 427 xorq %rsi, %rsi 428 movl grub_ebx, %esi 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 */ 440 cli 441 hlt0: 442 hlt 443 jmp hlt0 444 445 /** 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 473 movb $0xe, %al 474 outb %al, %dx 475 476 movw $0x3d5, %dx 477 inb %dx, %al 478 shl $8, %ax 479 480 /* Read bits 0 - 7 of the cursor address */ 481 movw $0x3d4, %dx 482 movb $0xf, %al 483 outb %al, %dx 484 485 movw $0x3d5, %dx 486 inb %dx, %al 487 488 /* 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: 495 496 movw %ax, %bx 497 shl $1, %rax 498 addq %rax, %rdi 499 500 early_puts_ploop: 501 lodsb 502 503 cmp $0, %al 504 je early_puts_ploop_end 505 506 movb $0x0e, %ah /* black background, yellow foreground */ 507 stosw 508 509 /* Sanity check for the cursor on the last line */ 510 inc %bx 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 536 movb $0xe, %al 537 outb %al, %dx 538 539 movw $0x3d5, %dx 540 movb %bh, %al 541 outb %al, %dx 542 543 /* Write bits 0 - 7 of the cursor address */ 544 movw $0x3d4, %dx 545 movb $0xf, %al 546 outb %al, %dx 547 548 movw $0x3d5, %dx 549 movb %bl, %al 550 outb %al, %dx 551 552 /* Epilogue, restore preserved registers */ 553 popq %rbx 554 leave 555 556 #endif 557 558 ret 559 560 #include "vesa_real.inc" 561 562 .section K_INI_PTLS, "aw", @progbits 563 564 /** 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 582 .endm 583 584 /* Page table for pages in the 1st gigabyte. */ 585 .align 4096 586 ptl_2_0g: 275 # Page table for pages in the first gigabyte. 276 .align 4096 277 .global ptl_2_0g 278 ptl_2_0g: 587 279 ptl2gen 512 0 588 280 589 /* Page table for pages in the 2nd gigabyte. */ 590 .align 4096 281 # Page table for pages in the second gigabyte. 282 .align 4096 283 .global ptl_2_1g 591 284 ptl_2_1g: 592 285 ptl2gen 512 1 593 286 594 /* Page table for pages in the 3rd gigabyte. */ 595 .align 4096 287 # Page table for pages in the third gigabyte. 288 .align 4096 289 .global ptl_2_2g 596 290 ptl_2_2g: 597 291 ptl2gen 512 2 598 292 599 /* Page table for pages in the 4th gigabyte. */ 600 .align 4096 293 # Page table for pages in the fourth gigabyte. 294 .align 4096 295 .global ptl_2_3g 601 296 ptl_2_3g: 602 297 ptl2gen 512 3 603 298 604 /* 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 299 .align 4096 300 .global ptl_1 625 301 ptl_1: 626 /* Identity mapping for [0; 8G) */302 # Identity mapping for [0; 4G) 627 303 .quad ptl_2_0g + (PTL_WRITABLE | PTL_PRESENT) 628 .quad ptl_2_1g + (PTL_WRITABLE | PTL_PRESENT) 304 .quad ptl_2_1g + (PTL_WRITABLE | PTL_PRESENT) 629 305 .quad ptl_2_2g + (PTL_WRITABLE | PTL_PRESENT) 630 306 .quad ptl_2_3g + (PTL_WRITABLE | PTL_PRESENT) 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, 0 307 .fill 506, 8, 0 308 # Mapping of [0; 1G) at -2G 309 .quad ptl_2_0g + (PTL_WRITABLE | PTL_PRESENT) 310 .fill 1, 8, 0 636 311 637 312 .align 4096 … … 639 314 ptl_0: 640 315 .quad ptl_1 + (PTL_WRITABLE | PTL_PRESENT) 641 .fill 255, 8,0316 .fill 255,8,0 642 317 .quad ptl_1 + (PTL_WRITABLE | PTL_PRESENT) 643 .fill 255, 8, 0 318 .fill 254,8,0 319 .quad ptl_1 + (PTL_WRITABLE | PTL_PRESENT) 644 320 645 321 .section K_DATA_START, "aw", @progbits 646 322 323 .global bootstrap_gdtr 647 324 bootstrap_gdtr: 648 .word GDT_SELECTOR(GDT_ITEMS)325 .word gdtselector(GDT_ITEMS) 649 326 .long KA2PA(gdt) 650 327 … … 655 332 .long 0 656 333 657 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] " 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."
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