Changeset e2ea4ab1 in mainline for kernel/arch/ia32/src
- Timestamp:
- 2010-07-02T14:22:35Z (16 years ago)
- Branches:
- lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export
- Children:
- 09b859c
- Parents:
- 4d1be48 (diff), e3ee9b9 (diff)
Note: this is a merge changeset, the changes displayed below correspond to the merge itself.
Use the(diff)links above to see all the changes relative to each parent. - Location:
- kernel/arch/ia32/src
- Files:
-
- 8 edited
-
asm.S (modified) (6 diffs)
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boot/boot.S (modified) (15 diffs)
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boot/vesa_prot.inc (modified) (7 diffs)
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boot/vesa_real.inc (modified) (19 diffs)
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boot/vesa_ret.inc (modified) (1 diff)
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smp/apic.c (modified) (4 diffs)
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smp/mps.c (modified) (5 diffs)
-
smp/smp.c (modified) (4 diffs)
Legend:
- Unmodified
- Added
- Removed
-
kernel/arch/ia32/src/asm.S
r4d1be48 re2ea4ab1 1 # 2 # Copyright (c) 2001-2004 Jakub Jermar 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 ## very low and hardware-level functions 30 31 # Mask for interrupts 0 - 31 (bits 0 - 31) where 0 means that int has no error 32 # word and 1 means interrupt with error word 33 #define ERROR_WORD_INTERRUPT_LIST 0x00027d00 1 /* 2 * Copyright (c) 2001 Jakub Jermar 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 /** Very low and hardware-level functions 30 * 31 */ 32 33 /** 34 * Mask for interrupts 0 - 31 (bits 0 - 31) where 0 means that int 35 * has no error word and 1 means interrupt with error word 36 * 37 */ 38 #define ERROR_WORD_INTERRUPT_LIST 0x00027d00 39 40 #include <arch/pm.h> 41 #include <arch/mm/page.h> 34 42 35 43 .text 36 37 44 .global paging_on 38 45 .global enable_l_apic_in_msr … … 45 52 .global memcpy_to_uspace 46 53 .global memcpy_to_uspace_failover_address 47 48 49 # Wrapper for generic memsetb 54 .global early_putchar 55 56 /* Wrapper for generic memsetb */ 50 57 memsetb: 51 58 jmp _memsetb 52 59 53 # Wrapper for generic memsetw 60 /* Wrapper for generic memsetw */ 54 61 memsetw: 55 62 jmp _memsetw 56 63 57 58 #define MEMCPY_DST 4 59 #define MEMCPY_SRC 8 60 #define MEMCPY_SIZE 12 64 #define MEMCPY_DST 4 65 #define MEMCPY_SRC 8 66 #define MEMCPY_SIZE 12 61 67 62 68 /** Copy memory to/from userspace. … … 68 74 * or copy_to_uspace(). 69 75 * 70 * @param MEMCPY_DST(%esp) Destination address.71 * @param MEMCPY_SRC(%esp) Source address.72 * @param MEMCPY_SIZE(%esp) Size.76 * @param MEMCPY_DST(%esp) Destination address. 77 * @param MEMCPY_SRC(%esp) Source address. 78 * @param MEMCPY_SIZE(%esp) Size. 73 79 * 74 80 * @return MEMCPY_DST(%esp) on success and 0 on failure. 81 * 75 82 */ 76 83 memcpy: 77 84 memcpy_from_uspace: 78 85 memcpy_to_uspace: 79 movl %edi, %edx /* save %edi */80 movl %esi, %eax /* save %esi */86 movl %edi, %edx /* save %edi */ 87 movl %esi, %eax /* save %esi */ 81 88 82 89 movl MEMCPY_SIZE(%esp), %ecx 83 shrl $2, %ecx /* size / 4 */90 shrl $2, %ecx /* size / 4 */ 84 91 85 92 movl MEMCPY_DST(%esp), %edi 86 93 movl MEMCPY_SRC(%esp), %esi 87 94 88 rep movsl /* copy whole words */ 89 95 /* Copy whole words */ 96 rep movsl 97 90 98 movl MEMCPY_SIZE(%esp), %ecx 91 andl $3, %ecx /* size % 4 */99 andl $3, %ecx /* size % 4 */ 92 100 jz 0f 93 101 94 rep movsb /* copy the rest byte by byte */ 95 96 0: 97 movl %edx, %edi 98 movl %eax, %esi 99 movl MEMCPY_DST(%esp), %eax /* MEMCPY_DST(%esp), success */ 100 ret 101 102 /* Copy the rest byte by byte */ 103 rep movsb 104 105 0: 106 107 movl %edx, %edi 108 movl %eax, %esi 109 110 /* MEMCPY_DST(%esp), success */ 111 movl MEMCPY_DST(%esp), %eax 112 ret 113 102 114 /* 103 115 * We got here from as_page_fault() after the memory operations … … 108 120 movl %edx, %edi 109 121 movl %eax, %esi 110 xorl %eax, %eax /* return 0, failure */ 122 123 /* Return 0, failure */ 124 xorl %eax, %eax 111 125 ret 112 126 113 ## Turn paging on 114 # 115 # Enable paging and write-back caching in CR0. 116 # 127 /** Turn paging on 128 * 129 * Enable paging and write-back caching in CR0. 130 * 131 */ 117 132 paging_on: 118 133 movl %cr0, %edx 119 orl $(1 << 31), %edx # paging on 120 # clear Cache Disable and not Write Though 134 orl $(1 << 31), %edx /* paging on */ 135 136 /* Clear Cache Disable and not Write Though */ 121 137 andl $~((1 << 30) | (1 << 29)), %edx 122 movl %edx, %cr0138 movl %edx, %cr0 123 139 jmp 0f 124 0: 125 ret 126 127 128 ## Enable local APIC 129 # 130 # Enable local APIC in MSR. 131 # 140 141 0: 142 ret 143 144 /** Enable local APIC 145 * 146 * Enable local APIC in MSR. 147 * 148 */ 132 149 enable_l_apic_in_msr: 133 150 movl $0x1b, %ecx … … 138 155 ret 139 156 140 # Clear nested flag 141 # overwrites %ecx 157 /** Clear nested flag 158 * 159 */ 142 160 .macro CLEAR_NT_FLAG 143 161 pushfl 144 162 andl $0xffffbfff, (%esp) 145 163 popfl 146 .endm 164 .endm 147 165 148 166 /* … … 158 176 sysenter_handler: 159 177 sti 160 pushl %ebp # remember user stack161 pushl %edi # remember return user address162 163 xorl %ebp, %ebp # stop stack traces here164 165 pushl %gs # remember TLS166 167 pushl %eax # syscall number168 subl $8, %esp # unused sixth and fifth argument169 pushl %esi # fourth argument170 pushl %ebx # third argument171 pushl %ecx # second argument172 pushl %edx # first argument173 178 pushl %ebp /* remember user stack */ 179 pushl %edi /* remember return user address */ 180 181 xorl %ebp, %ebp /* stop stack traces here */ 182 183 pushl %gs /* remember TLS */ 184 185 pushl %eax /* syscall number */ 186 subl $8, %esp /* unused sixth and fifth argument */ 187 pushl %esi /* fourth argument */ 188 pushl %ebx /* third argument */ 189 pushl %ecx /* second argument */ 190 pushl %edx /* first argument */ 191 174 192 movw $16, %ax 175 193 movw %ax, %ds 176 194 movw %ax, %es 177 195 178 196 cld 179 197 call syscall_handler 180 addl $28, %esp # remove arguments from stack 181 182 pop %gs # restore TLS 183 184 pop %edx # prepare return EIP for SYSEXIT 185 pop %ecx # prepare userspace ESP for SYSEXIT 186 187 sysexit # return to userspace 188 189 190 #define ISTATE_OFFSET_EAX 0 191 #define ISTATE_OFFSET_EBX 4 192 #define ISTATE_OFFSET_ECX 8 193 #define ISTATE_OFFSET_EDX 12 194 #define ISTATE_OFFSET_EDI 16 195 #define ISTATE_OFFSET_ESI 20 196 #define ISTATE_OFFSET_EBP 24 197 #define ISTATE_OFFSET_EBP_FRAME 28 198 #define ISTATE_OFFSET_EIP_FRAME 32 199 #define ISTATE_OFFSET_GS 36 200 #define ISTATE_OFFSET_FS 40 201 #define ISTATE_OFFSET_ES 44 202 #define ISTATE_OFFSET_DS 48 203 #define ISTATE_OFFSET_ERROR_WORD 52 204 #define ISTATE_OFFSET_EIP 56 205 #define ISTATE_OFFSET_CS 60 206 #define ISTATE_OFFSET_EFLAGS 64 207 #define ISTATE_OFFSET_ESP 68 208 #define ISTATE_OFFSET_SS 72 198 addl $28, %esp /* remove arguments from stack */ 199 200 pop %gs /* restore TLS */ 201 202 pop %edx /* prepare return EIP for SYSEXIT */ 203 pop %ecx /* prepare userspace ESP for SYSEXIT */ 204 205 sysexit /* return to userspace */ 206 207 #define ISTATE_OFFSET_EAX 0 208 #define ISTATE_OFFSET_EBX 4 209 #define ISTATE_OFFSET_ECX 8 210 #define ISTATE_OFFSET_EDX 12 211 #define ISTATE_OFFSET_EDI 16 212 #define ISTATE_OFFSET_ESI 20 213 #define ISTATE_OFFSET_EBP 24 214 #define ISTATE_OFFSET_EBP_FRAME 28 215 #define ISTATE_OFFSET_EIP_FRAME 32 216 #define ISTATE_OFFSET_GS 36 217 #define ISTATE_OFFSET_FS 40 218 #define ISTATE_OFFSET_ES 44 219 #define ISTATE_OFFSET_DS 48 220 #define ISTATE_OFFSET_ERROR_WORD 52 221 #define ISTATE_OFFSET_EIP 56 222 #define ISTATE_OFFSET_CS 60 223 #define ISTATE_OFFSET_EFLAGS 64 224 #define ISTATE_OFFSET_ESP 68 225 #define ISTATE_OFFSET_SS 72 209 226 210 227 /* 211 * Size of the istate structure without the hardware-saved part and without the 212 * error word. 213 */ 214 #define ISTATE_SOFT_SIZE 52 215 216 ## Declare interrupt handlers 217 # 218 # Declare interrupt handlers for n interrupt 219 # vectors starting at vector i. 220 # 221 # The handlers setup data segment registers 222 # and call exc_dispatch(). 223 # 224 #define INTERRUPT_ALIGN 256 228 * Size of the istate structure without the hardware-saved part 229 * and without the error word. 230 */ 231 #define ISTATE_SOFT_SIZE 52 232 233 /** Declare interrupt handlers 234 * 235 * Declare interrupt handlers for n interrupt 236 * vectors starting at vector i. 237 * 238 * The handlers setup data segment registers 239 * and call exc_dispatch(). 240 * 241 */ 242 #define INTERRUPT_ALIGN 256 243 225 244 .macro handler i n 226 227 .ifeq \i - 0x30 # Syscall handler 228 pushl %ds 229 pushl %es 230 pushl %fs 231 pushl %gs 232 233 # 234 # Push syscall arguments onto the stack 235 # 236 # NOTE: The idea behind the order of arguments passed in registers is to 237 # use all scratch registers first and preserved registers next. 238 # An optimized libc syscall wrapper can make use of this setup. 239 # 240 pushl %eax 241 pushl %ebp 242 pushl %edi 243 pushl %esi 244 pushl %ebx 245 pushl %ecx 246 pushl %edx 247 248 # we must fill the data segment registers 249 movw $16, %ax 250 movw %ax, %ds 251 movw %ax, %es 252 253 xorl %ebp, %ebp 254 255 cld 256 sti 257 # syscall_handler(edx, ecx, ebx, esi, edi, ebp, eax) 258 call syscall_handler 259 cli 260 261 movl 20(%esp), %ebp # restore EBP 262 addl $28, %esp # clean-up of parameters 263 264 popl %gs 265 popl %fs 266 popl %es 267 popl %ds 268 269 CLEAR_NT_FLAG 270 iret 271 .else 272 /* 273 * This macro distinguishes between two versions of ia32 exceptions. 274 * One version has error word and the other does not have it. 275 * The latter version fakes the error word on the stack so that the 276 * handlers and istate_t can be the same for both types. 277 */ 278 .iflt \i - 32 279 .if (1 << \i) & ERROR_WORD_INTERRUPT_LIST 280 # 281 # Exception with error word: do nothing 282 # 283 .else 284 # 285 # Exception without error word: fake up one 286 # 287 pushl $0 288 .endif 289 .else 290 # 291 # Interrupt: fake up one 292 # 293 pushl $0 294 .endif 295 296 subl $ISTATE_SOFT_SIZE, %esp 297 298 # 299 # Save the general purpose registers. 300 # 301 movl %eax, ISTATE_OFFSET_EAX(%esp) 302 movl %ebx, ISTATE_OFFSET_EBX(%esp) 303 movl %ecx, ISTATE_OFFSET_ECX(%esp) 304 movl %edx, ISTATE_OFFSET_EDX(%esp) 305 movl %edi, ISTATE_OFFSET_EDI(%esp) 306 movl %esi, ISTATE_OFFSET_ESI(%esp) 307 movl %ebp, ISTATE_OFFSET_EBP(%esp) 308 309 # 310 # Save the selector registers. 311 # 312 movl %gs, %eax 313 movl %fs, %ebx 314 movl %es, %ecx 315 movl %ds, %edx 316 317 movl %eax, ISTATE_OFFSET_GS(%esp) 318 movl %ebx, ISTATE_OFFSET_FS(%esp) 319 movl %ecx, ISTATE_OFFSET_ES(%esp) 320 movl %edx, ISTATE_OFFSET_DS(%esp) 321 322 # 323 # Switch to kernel selectors. 324 # 325 movl $16, %eax 326 movl %eax, %ds 327 movl %eax, %es 328 329 # 330 # Imitate a regular stack frame linkage. 331 # Stop stack traces here if we came from userspace. 332 # 333 cmpl $8, ISTATE_OFFSET_CS(%esp) 334 jz 0f 335 xorl %ebp, %ebp 336 0: movl %ebp, ISTATE_OFFSET_EBP_FRAME(%esp) 337 movl ISTATE_OFFSET_EIP(%esp), %eax 338 movl %eax, ISTATE_OFFSET_EIP_FRAME(%esp) 339 leal ISTATE_OFFSET_EBP_FRAME(%esp), %ebp 340 341 cld 342 343 pushl %esp # pass istate address 344 pushl $(\i) # pass intnum 345 call exc_dispatch # exc_dispatch(intnum, istate) 346 addl $8, %esp # Clear arguments from the stack 347 348 CLEAR_NT_FLAG 349 350 # 351 # Restore the selector registers. 352 # 353 movl ISTATE_OFFSET_GS(%esp), %eax 354 movl ISTATE_OFFSET_FS(%esp), %ebx 355 movl ISTATE_OFFSET_ES(%esp), %ecx 356 movl ISTATE_OFFSET_DS(%esp), %edx 357 358 movl %eax, %gs 359 movl %ebx, %fs 360 movl %ecx, %es 361 movl %edx, %ds 362 363 # 364 # Restore the scratch registers and the preserved registers the handler 365 # cloberred itself (i.e. EBX and EBP). 366 # 367 movl ISTATE_OFFSET_EAX(%esp), %eax 368 movl ISTATE_OFFSET_EBX(%esp), %ebx 369 movl ISTATE_OFFSET_ECX(%esp), %ecx 370 movl ISTATE_OFFSET_EDX(%esp), %edx 371 movl ISTATE_OFFSET_EBP(%esp), %ebp 372 373 addl $(ISTATE_SOFT_SIZE + 4), %esp 374 iret 375 .endif 376 377 .align INTERRUPT_ALIGN 378 .if (\n- \i) - 1 379 handler "(\i + 1)", \n 380 .endif 245 .ifeq \i - 0x30 246 /* Syscall handler */ 247 pushl %ds 248 pushl %es 249 pushl %fs 250 pushl %gs 251 252 /* 253 * Push syscall arguments onto the stack 254 * 255 * NOTE: The idea behind the order of arguments passed 256 * in registers is to use all scratch registers 257 * first and preserved registers next. An optimized 258 * libc syscall wrapper can make use of this setup. 259 * 260 */ 261 pushl %eax 262 pushl %ebp 263 pushl %edi 264 pushl %esi 265 pushl %ebx 266 pushl %ecx 267 pushl %edx 268 269 /* We must fill the data segment registers */ 270 movw $16, %ax 271 movw %ax, %ds 272 movw %ax, %es 273 274 xorl %ebp, %ebp 275 276 cld 277 sti 278 279 /* Call syscall_handler(edx, ecx, ebx, esi, edi, ebp, eax) */ 280 call syscall_handler 281 cli 282 283 movl 20(%esp), %ebp /* restore EBP */ 284 addl $28, %esp /* clean-up of parameters */ 285 286 popl %gs 287 popl %fs 288 popl %es 289 popl %ds 290 291 CLEAR_NT_FLAG 292 iret 293 .else 294 /* 295 * This macro distinguishes between two versions of ia32 296 * exceptions. One version has error word and the other 297 * does not have it. The latter version fakes the error 298 * word on the stack so that the handlers and istate_t 299 * can be the same for both types. 300 */ 301 .iflt \i - 32 302 .if (1 << \i) & ERROR_WORD_INTERRUPT_LIST 303 /* 304 * Exception with error word: do nothing 305 */ 306 .else 307 /* 308 * Exception without error word: fake up one 309 */ 310 pushl $0 311 .endif 312 .else 313 /* 314 * Interrupt: fake up one 315 */ 316 pushl $0 317 .endif 318 319 subl $ISTATE_SOFT_SIZE, %esp 320 321 /* 322 * Save the general purpose registers. 323 */ 324 movl %eax, ISTATE_OFFSET_EAX(%esp) 325 movl %ebx, ISTATE_OFFSET_EBX(%esp) 326 movl %ecx, ISTATE_OFFSET_ECX(%esp) 327 movl %edx, ISTATE_OFFSET_EDX(%esp) 328 movl %edi, ISTATE_OFFSET_EDI(%esp) 329 movl %esi, ISTATE_OFFSET_ESI(%esp) 330 movl %ebp, ISTATE_OFFSET_EBP(%esp) 331 332 /* 333 * Save the selector registers. 334 */ 335 movl %gs, %eax 336 movl %fs, %ebx 337 movl %es, %ecx 338 movl %ds, %edx 339 340 movl %eax, ISTATE_OFFSET_GS(%esp) 341 movl %ebx, ISTATE_OFFSET_FS(%esp) 342 movl %ecx, ISTATE_OFFSET_ES(%esp) 343 movl %edx, ISTATE_OFFSET_DS(%esp) 344 345 /* 346 * Switch to kernel selectors. 347 */ 348 movl $16, %eax 349 movl %eax, %ds 350 movl %eax, %es 351 352 /* 353 * Imitate a regular stack frame linkage. 354 * Stop stack traces here if we came from userspace. 355 */ 356 cmpl $8, ISTATE_OFFSET_CS(%esp) 357 jz 0f 358 xorl %ebp, %ebp 359 360 0: 361 362 movl %ebp, ISTATE_OFFSET_EBP_FRAME(%esp) 363 movl ISTATE_OFFSET_EIP(%esp), %eax 364 movl %eax, ISTATE_OFFSET_EIP_FRAME(%esp) 365 leal ISTATE_OFFSET_EBP_FRAME(%esp), %ebp 366 367 cld 368 369 pushl %esp /* pass istate address */ 370 pushl $(\i) /* pass intnum */ 371 372 /* Call exc_dispatch(intnum, istate) */ 373 call exc_dispatch 374 375 addl $8, %esp /* clear arguments from the stack */ 376 377 CLEAR_NT_FLAG 378 379 /* 380 * Restore the selector registers. 381 */ 382 movl ISTATE_OFFSET_GS(%esp), %eax 383 movl ISTATE_OFFSET_FS(%esp), %ebx 384 movl ISTATE_OFFSET_ES(%esp), %ecx 385 movl ISTATE_OFFSET_DS(%esp), %edx 386 387 movl %eax, %gs 388 movl %ebx, %fs 389 movl %ecx, %es 390 movl %edx, %ds 391 392 /* 393 * Restore the scratch registers and the preserved 394 * registers the handler cloberred itself 395 * (i.e. EBX and EBP). 396 */ 397 movl ISTATE_OFFSET_EAX(%esp), %eax 398 movl ISTATE_OFFSET_EBX(%esp), %ebx 399 movl ISTATE_OFFSET_ECX(%esp), %ecx 400 movl ISTATE_OFFSET_EDX(%esp), %edx 401 movl ISTATE_OFFSET_EBP(%esp), %ebp 402 403 addl $(ISTATE_SOFT_SIZE + 4), %esp 404 iret 405 406 .endif 407 408 .align INTERRUPT_ALIGN 409 .if (\n - \i) - 1 410 handler "(\i + 1)", \n 411 .endif 381 412 .endm 382 413 383 # keep in sync with pm.h !!! 384 IDT_ITEMS = 64 414 /* Keep in sync with pm.h! */ 415 #define IDT_ITEMS 64 416 385 417 .align INTERRUPT_ALIGN 386 418 interrupt_handlers: 387 h_start: 388 handler 0 IDT_ITEMS 389 h_end: 419 h_start: 420 handler 0 IDT_ITEMS 421 h_end: 422 423 /** Print Unicode character to EGA display. 424 * 425 * If CONFIG_EGA is undefined or CONFIG_FB is defined 426 * then this function does nothing. 427 * 428 * Since the EGA can only display Extended ASCII (usually 429 * ISO Latin 1) characters, some of the Unicode characters 430 * can be displayed in a wrong way. Only the newline character 431 * is interpreted, all other characters (even unprintable) are 432 * printed verbatim. 433 * 434 * @param %ebp+0x08 Unicode character to be printed. 435 * 436 */ 437 early_putchar: 438 439 #if ((defined(CONFIG_EGA)) && (!defined(CONFIG_FB))) 440 441 /* Prologue, save preserved registers */ 442 pushl %ebp 443 movl %esp, %ebp 444 pushl %ebx 445 pushl %esi 446 pushl %edi 447 448 movl $(PA2KA(0xb8000)), %edi /* base of EGA text mode memory */ 449 xorl %eax, %eax 450 451 /* Read bits 8 - 15 of the cursor address */ 452 movw $0x3d4, %dx 453 movb $0xe, %al 454 outb %al, %dx 455 456 movw $0x3d5, %dx 457 inb %dx, %al 458 shl $8, %ax 459 460 /* Read bits 0 - 7 of the cursor address */ 461 movw $0x3d4, %dx 462 movb $0xf, %al 463 outb %al, %dx 464 465 movw $0x3d5, %dx 466 inb %dx, %al 467 468 /* Sanity check for the cursor on screen */ 469 cmp $2000, %ax 470 jb early_putchar_cursor_ok 471 472 movw $1998, %ax 473 474 early_putchar_cursor_ok: 475 476 movw %ax, %bx 477 shl $1, %eax 478 addl %eax, %edi 479 480 movl 0x08(%ebp), %eax 481 482 cmp $0x0a, %al 483 jne early_putchar_print 484 485 /* Interpret newline */ 486 487 movw %bx, %ax /* %bx -> %dx:%ax */ 488 xorw %dx, %dx 489 490 movw $80, %cx 491 idivw %cx, %ax /* %dx = %bx % 80 */ 492 493 /* %bx <- %bx + 80 - (%bx % 80) */ 494 addw %cx, %bx 495 subw %dx, %bx 496 497 jmp early_putchar_newline 498 499 early_putchar_print: 500 501 /* Print character */ 502 503 movb $0x0e, %ah /* black background, yellow foreground */ 504 stosw 505 inc %bx 506 507 early_putchar_newline: 508 509 /* Sanity check for the cursor on the last line */ 510 cmp $2000, %bx 511 jb early_putchar_no_scroll 512 513 /* Scroll the screen (24 rows) */ 514 movl $(PA2KA(0xb80a0)), %esi 515 movl $(PA2KA(0xb8000)), %edi 516 movl $1920, %ecx 517 rep movsw 518 519 /* Clear the 24th row */ 520 xorl %eax, %eax 521 movl $80, %ecx 522 rep stosw 523 524 /* Go to row 24 */ 525 movw $1920, %bx 526 527 early_putchar_no_scroll: 528 529 /* Write bits 8 - 15 of the cursor address */ 530 movw $0x3d4, %dx 531 movb $0xe, %al 532 outb %al, %dx 533 534 movw $0x3d5, %dx 535 movb %bh, %al 536 outb %al, %dx 537 538 /* Write bits 0 - 7 of the cursor address */ 539 movw $0x3d4, %dx 540 movb $0xf, %al 541 outb %al, %dx 542 543 movw $0x3d5, %dx 544 movb %bl, %al 545 outb %al, %dx 546 547 /* Epilogue, restore preserved registers */ 548 popl %edi 549 popl %esi 550 popl %ebx 551 leave 552 553 #endif 554 555 ret 390 556 391 557 .data -
kernel/arch/ia32/src/boot/boot.S
r4d1be48 re2ea4ab1 1 # 2 # Copyright (c) 2001-2004Jakub Jermar3 # Copyright (c) 2005-2006Martin Decky4 #All rights reserved.5 # 6 #Redistribution and use in source and binary forms, with or without7 #modification, are permitted provided that the following conditions8 #are met:9 # 10 #- Redistributions of source code must retain the above copyright11 #notice, this list of conditions and the following disclaimer.12 #- Redistributions in binary form must reproduce the above copyright13 #notice, this list of conditions and the following disclaimer in the14 #documentation and/or other materials provided with the distribution.15 #- The name of the author may not be used to endorse or promote products16 #derived from this software without specific prior written permission.17 # 18 #THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR19 #IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES20 #OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.21 #IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,22 #INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT23 #NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,24 #DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY25 #THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT26 #(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF27 #THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.28 # 1 /* 2 * Copyright (c) 2001 Jakub Jermar 3 * Copyright (c) 2005 Martin Decky 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 10 * - Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * - Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * - The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 29 30 30 #include <arch/boot/boot.h> … … 34 34 #include <arch/cpuid.h> 35 35 36 #define START_STACK (BOOT_OFFSET - BOOT_STACK_SIZE)36 #define START_STACK (BOOT_OFFSET - BOOT_STACK_SIZE) 37 37 38 38 .section K_TEXT_START, "ax" 39 39 40 40 .code32 41 42 .macro pm_error msg 43 movl \msg, %esi 44 jmp pm_error_halt 45 .endm 46 47 .macro pm_status msg 48 #ifdef CONFIG_EGA 49 pushl %esi 50 movl \msg, %esi 51 call pm_early_puts 52 popl %esi 53 #endif 54 .endm 55 56 .macro pm2_status msg 57 pushl \msg 58 call early_puts 59 .endm 60 41 61 .align 4 42 62 .global multiboot_image_start … … 44 64 .long MULTIBOOT_HEADER_MAGIC 45 65 .long MULTIBOOT_HEADER_FLAGS 46 .long -(MULTIBOOT_HEADER_MAGIC + MULTIBOOT_HEADER_FLAGS) # checksum66 .long -(MULTIBOOT_HEADER_MAGIC + MULTIBOOT_HEADER_FLAGS) /* checksum */ 47 67 .long multiboot_header 48 68 .long unmapped_ktext_start … … 53 73 multiboot_image_start: 54 74 cld 55 movl $START_STACK, %esp # initialize stack pointer 56 lgdt KA2PA(bootstrap_gdtr) # initialize Global Descriptor Table register 57 75 76 /* Initialize stack pointer */ 77 movl $START_STACK, %esp 78 79 /* Initialize Global Descriptor Table register */ 80 lgdtl KA2PA(bootstrap_gdtr) 81 82 /* Kernel data + stack */ 58 83 movw $gdtselector(KDATA_DES), %cx 59 84 movw %cx, %es 60 85 movw %cx, %fs 61 86 movw %cx, %gs 62 movw %cx, %ds # kernel data + stack87 movw %cx, %ds 63 88 movw %cx, %ss 64 89 … … 66 91 multiboot_meeting_point: 67 92 68 movl %eax, grub_eax # save parameters from GRUB 93 /* Save GRUB arguments */ 94 movl %eax, grub_eax 69 95 movl %ebx, grub_ebx 96 97 pm_status $status_prot 70 98 71 99 movl $(INTEL_CPUID_LEVEL), %eax 72 100 cpuid 73 cmp $0x0, %eax # any function > 0?101 cmp $0x0, %eax /* any function > 0? */ 74 102 jbe pse_unsupported 75 103 … … 80 108 81 109 pse_unsupported: 82 movl $pse_msg, %esi83 jmp error_halt110 111 pm_error $err_pse 84 112 85 113 pse_supported: 86 114 87 115 #include "vesa_prot.inc" 88 89 # map kernel and turn paging on116 117 /* Map kernel and turn paging on */ 90 118 call map_kernel 91 119 92 # call arch_pre_main(grub_eax, grub_ebx) 120 /* Create the first stack frame */ 121 pushl $0 122 movl %esp, %ebp 123 124 pm2_status $status_prot2 125 126 /* Call arch_pre_main(grub_eax, grub_ebx) */ 93 127 pushl grub_ebx 94 128 pushl grub_eax 95 129 call arch_pre_main 96 97 # Create the first stack frame 98 pushl $0 99 movl %esp, %ebp 100 130 131 pm2_status $status_main 132 133 /* Call main_bsp() */ 101 134 call main_bsp 102 135 103 # not reached136 /* Not reached */ 104 137 cli 105 138 hlt0: … … 107 140 jmp hlt0 108 141 142 /** Setup mapping for the kernel. 143 * 144 * Setup mapping for both the unmapped and mapped sections 145 * of the kernel. For simplicity, we map the entire 4G space. 146 * 147 */ 109 148 .global map_kernel 110 149 map_kernel: 111 #112 # Here we setup mapping for both the unmapped and mapped sections of the kernel.113 # For simplicity, we map the entire 4G space.114 #115 150 movl %cr4, %ecx 116 orl $(1 << 4), %ecx # turn PSE on117 andl $(~(1 << 5)), %ecx # turn PAE off151 orl $(1 << 4), %ecx /* PSE on */ 152 andl $(~(1 << 5)), %ecx /* PAE off */ 118 153 movl %ecx, %cr4 119 154 … … 126 161 movl $((1 << 7) | (1 << 1) | (1 << 0)), %eax 127 162 orl %ebx, %eax 128 movl %eax, (%esi, %ecx, 4) # mapping 0x00000000 + %ecx * 4M => 0x00000000 + %ecx * 4M 129 movl %eax, (%edi, %ecx, 4) # mapping 0x80000000 + %ecx * 4M => 0x00000000 + %ecx * 4M 163 /* Mapping 0x00000000 + %ecx * 4M => 0x00000000 + %ecx * 4M */ 164 movl %eax, (%esi, %ecx, 4) 165 /* Mapping 0x80000000 + %ecx * 4M => 0x00000000 + %ecx * 4M */ 166 movl %eax, (%edi, %ecx, 4) 130 167 addl $(4 * 1024 * 1024), %ebx 131 168 … … 137 174 138 175 movl %cr0, %ebx 139 orl $(1 << 31), %ebx # turn paging on176 orl $(1 << 31), %ebx /* paging on */ 140 177 movl %ebx, %cr0 141 178 ret 142 179 143 # Print string from %esi to EGA display (in red) and halt 144 error_halt: 145 movl $0xb8000, %edi # base of EGA text mode memory 180 /** Print string to EGA display (in light red) and halt. 181 * 182 * Should be executed from 32 bit protected mode with paging 183 * turned off. Stack is not required. This routine is used even 184 * if CONFIG_EGA is not enabled. Since we are going to halt the 185 * CPU anyway, it is always better to at least try to print 186 * some hints. 187 * 188 * @param %esi NULL-terminated string to print. 189 * 190 */ 191 pm_error_halt: 192 movl $0xb8000, %edi /* base of EGA text mode memory */ 146 193 xorl %eax, %eax 147 194 148 movw $0x3d4, %dx # read bits 8 - 15 of the cursor address 195 /* Read bits 8 - 15 of the cursor address */ 196 movw $0x3d4, %dx 149 197 movb $0xe, %al 150 198 outb %al, %dx … … 154 202 shl $8, %ax 155 203 156 movw $0x3d4, %dx # read bits 0 - 7 of the cursor address 204 /* Read bits 0 - 7 of the cursor address */ 205 movw $0x3d4, %dx 157 206 movb $0xf, %al 158 207 outb %al, %dx … … 161 210 inb %dx, %al 162 211 163 cmp $1920, %ax 164 jbe cursor_ok 165 166 movw $1920, %ax # sanity check for the cursor on the last line 167 168 cursor_ok: 212 /* Sanity check for the cursor on screen */ 213 cmp $2000, %ax 214 jb err_cursor_ok 215 216 movw $1998, %ax 217 218 err_cursor_ok: 169 219 170 220 movw %ax, %bx … … 172 222 addl %eax, %edi 173 223 174 movw $0x0c00, %ax # black background, light red foreground 175 176 ploop: 224 err_ploop: 177 225 lodsb 226 178 227 cmp $0, %al 179 je ploop_end 228 je err_ploop_end 229 230 movb $0x0c, %ah /* black background, light red foreground */ 180 231 stosw 232 233 /* Sanity check for the cursor on the last line */ 181 234 inc %bx 182 jmp ploop 183 ploop_end: 184 185 movw $0x3d4, %dx # write bits 8 - 15 of the cursor address 235 cmp $2000, %bx 236 jb err_ploop 237 238 /* Scroll the screen (24 rows) */ 239 movl %esi, %edx 240 movl $0xb80a0, %esi 241 movl $0xb8000, %edi 242 movl $1920, %ecx 243 rep movsw 244 245 /* Clear the 24th row */ 246 xorl %eax, %eax 247 movl $80, %ecx 248 rep stosw 249 250 /* Go to row 24 */ 251 movl %edx, %esi 252 movl $0xb8f00, %edi 253 movw $1920, %bx 254 255 jmp err_ploop 256 err_ploop_end: 257 258 /* Write bits 8 - 15 of the cursor address */ 259 movw $0x3d4, %dx 186 260 movb $0xe, %al 187 261 outb %al, %dx … … 191 265 outb %al, %dx 192 266 193 movw $0x3d4, %dx # write bits 0 - 7 of the cursor address 267 /* Write bits 0 - 7 of the cursor address */ 268 movw $0x3d4, %dx 194 269 movb $0xf, %al 195 270 outb %al, %dx … … 204 279 jmp hlt1 205 280 281 /** Print string to EGA display (in light green). 282 * 283 * Should be called from 32 bit protected mode with paging 284 * turned off. A stack space of at least 24 bytes is required, 285 * but the function does not establish a stack frame. 286 * 287 * Macros such as pm_status take care that this function 288 * is used only when CONFIG_EGA is enabled. 289 * 290 * @param %esi NULL-terminated string to print. 291 * 292 */ 293 pm_early_puts: 294 pushl %eax 295 pushl %ebx 296 pushl %ecx 297 pushl %edx 298 pushl %edi 299 300 movl $0xb8000, %edi /* base of EGA text mode memory */ 301 xorl %eax, %eax 302 303 /* Read bits 8 - 15 of the cursor address */ 304 movw $0x3d4, %dx 305 movb $0xe, %al 306 outb %al, %dx 307 308 movw $0x3d5, %dx 309 inb %dx, %al 310 shl $8, %ax 311 312 /* Read bits 0 - 7 of the cursor address */ 313 movw $0x3d4, %dx 314 movb $0xf, %al 315 outb %al, %dx 316 317 movw $0x3d5, %dx 318 inb %dx, %al 319 320 /* Sanity check for the cursor on screen */ 321 cmp $2000, %ax 322 jb pm_puts_cursor_ok 323 324 movw $1998, %ax 325 326 pm_puts_cursor_ok: 327 328 movw %ax, %bx 329 shl $1, %eax 330 addl %eax, %edi 331 332 pm_puts_ploop: 333 lodsb 334 335 cmp $0, %al 336 je pm_puts_ploop_end 337 338 movb $0x0a, %ah /* black background, light green foreground */ 339 stosw 340 341 /* Sanity check for the cursor on the last line */ 342 inc %bx 343 cmp $2000, %bx 344 jb pm_puts_ploop 345 346 /* Scroll the screen (24 rows) */ 347 movl %esi, %edx 348 movl $0xb80a0, %esi 349 movl $0xb8000, %edi 350 movl $1920, %ecx 351 rep movsw 352 353 /* Clear the 24th row */ 354 xorl %eax, %eax 355 movl $80, %ecx 356 rep stosw 357 358 /* Go to row 24 */ 359 movl %edx, %esi 360 movl $0xb8f00, %edi 361 movw $1920, %bx 362 363 jmp pm_puts_ploop 364 pm_puts_ploop_end: 365 366 /* Write bits 8 - 15 of the cursor address */ 367 movw $0x3d4, %dx 368 movb $0xe, %al 369 outb %al, %dx 370 371 movw $0x3d5, %dx 372 movb %bh, %al 373 outb %al, %dx 374 375 /* Write bits 0 - 7 of the cursor address */ 376 movw $0x3d4, %dx 377 movb $0xf, %al 378 outb %al, %dx 379 380 movw $0x3d5, %dx 381 movb %bl, %al 382 outb %al, %dx 383 384 popl %edi 385 popl %edx 386 popl %ecx 387 popl %ebx 388 popl %eax 389 390 ret 391 392 /** Print string to EGA display. 393 * 394 * Should be called from 32 bit protected mode (with paging 395 * enabled and stack established). This function is ABI compliant. 396 * 397 * If CONFIG_EGA is undefined or CONFIG_FB is defined 398 * then this function does nothing. 399 * 400 * @param %ebp+0x08 NULL-terminated string to print. 401 * 402 */ 403 early_puts: 404 405 #if ((defined(CONFIG_EGA)) && (!defined(CONFIG_FB))) 406 407 /* Prologue, save preserved registers */ 408 pushl %ebp 409 movl %esp, %ebp 410 pushl %ebx 411 pushl %esi 412 pushl %edi 413 414 movl 0x08(%ebp), %esi 415 movl $(PA2KA(0xb8000)), %edi /* base of EGA text mode memory */ 416 xorl %eax, %eax 417 418 /* Read bits 8 - 15 of the cursor address */ 419 movw $0x3d4, %dx 420 movb $0xe, %al 421 outb %al, %dx 422 423 movw $0x3d5, %dx 424 inb %dx, %al 425 shl $8, %ax 426 427 /* Read bits 0 - 7 of the cursor address */ 428 movw $0x3d4, %dx 429 movb $0xf, %al 430 outb %al, %dx 431 432 movw $0x3d5, %dx 433 inb %dx, %al 434 435 /* Sanity check for the cursor on screen */ 436 cmp $2000, %ax 437 jb early_puts_cursor_ok 438 439 movw $1998, %ax 440 441 early_puts_cursor_ok: 442 443 movw %ax, %bx 444 shl $1, %eax 445 addl %eax, %edi 446 447 early_puts_ploop: 448 lodsb 449 450 cmp $0, %al 451 je early_puts_ploop_end 452 453 movb $0x0e, %ah /* black background, yellow foreground */ 454 stosw 455 456 /* Sanity check for the cursor on the last line */ 457 inc %bx 458 cmp $2000, %bx 459 jb early_puts_ploop 460 461 /* Scroll the screen (24 rows) */ 462 movl %esi, %edx 463 movl $(PA2KA(0xb80a0)), %esi 464 movl $(PA2KA(0xb8000)), %edi 465 movl $1920, %ecx 466 rep movsw 467 468 /* Clear the 24th row */ 469 xorl %eax, %eax 470 movl $80, %ecx 471 rep stosw 472 473 /* Go to row 24 */ 474 movl %edx, %esi 475 movl $(PA2KA(0xb8f00)), %edi 476 movw $1920, %bx 477 478 jmp early_puts_ploop 479 early_puts_ploop_end: 480 481 /* Write bits 8 - 15 of the cursor address */ 482 movw $0x3d4, %dx 483 movb $0xe, %al 484 outb %al, %dx 485 486 movw $0x3d5, %dx 487 movb %bh, %al 488 outb %al, %dx 489 490 /* Write bits 0 - 7 of the cursor address */ 491 movw $0x3d4, %dx 492 movb $0xf, %al 493 outb %al, %dx 494 495 movw $0x3d5, %dx 496 movb %bl, %al 497 outb %al, %dx 498 499 /* Epilogue, restore preserved registers */ 500 popl %edi 501 popl %esi 502 popl %ebx 503 leave 504 505 #endif 506 507 ret 508 206 509 #include "vesa_real.inc" 207 510 … … 218 521 .long 0 219 522 220 pse_msg:523 err_pse: 221 524 .asciz "Page Size Extension not supported. System halted." 222 525 526 status_prot: 527 .asciz "[prot] " 528 status_vesa_copy: 529 .asciz "[vesa_copy] " 530 status_grub_cmdline: 531 .asciz "[grub_cmdline] " 532 status_vesa_real: 533 .asciz "[vesa_real] " 534 status_prot2: 535 .asciz "[prot2] " 536 status_main: 537 .asciz "[main] " -
kernel/arch/ia32/src/boot/vesa_prot.inc
r4d1be48 re2ea4ab1 5 5 #define MBINFO_OFFSET_CMDLINE 16 6 6 7 # copy real mode VESA initialization code 7 /* Copy real mode VESA initialization code */ 8 9 pm_status $status_vesa_copy 8 10 9 11 mov $vesa_init, %esi … … 12 14 rep movsb 13 15 14 # check for GRUB command line 16 /* Check for GRUB command line */ 17 18 pm_status $status_grub_cmdline 15 19 16 20 mov grub_eax, %eax … … 23 27 jnc no_cmdline 24 28 25 # skip the kernel path in command line29 /* Skip the kernel path in command line */ 26 30 27 31 mov MBINFO_OFFSET_CMDLINE(%ebx), %esi … … 52 56 space_loop_done: 53 57 54 # copy at most 23 characters from command line58 /* Copy at most 23 characters from command line */ 55 59 56 60 mov $VESA_INIT_SEGMENT << 4, %edi … … 68 72 cmd_loop_done: 69 73 70 # zero termination74 /* Zero termination */ 71 75 72 76 xor %eax, %eax … … 75 79 no_cmdline: 76 80 77 # jump to the real mode 81 /* Jump to the real mode */ 82 83 pm_status $status_vesa_real 78 84 79 85 mov $VESA_INIT_SEGMENT << 4, %edi … … 81 87 82 88 vesa_meeting_point: 83 # returned back to protected mode89 /* Returned back to protected mode */ 84 90 85 91 mov %ax, KA2PA(vesa_scanline) -
kernel/arch/ia32/src/boot/vesa_real.inc
r4d1be48 re2ea4ab1 31 31 vesa_init: 32 32 jmp $gdtselector(VESA_INIT_DES), $vesa_init_real - vesa_init 33 33 34 34 .code16 35 35 vesa_init_real: … … 55 55 pushl %eax 56 56 57 # parse default mode string57 /* Parse default mode string */ 58 58 59 59 mov $default_mode - vesa_init, %di … … 65 65 mov (%di), %al 66 66 67 # check for digit67 /* Check for digit */ 68 68 69 69 cmp $'0', %al … … 75 75 sub $'0', %al 76 76 77 # multiply default_width by 10 and add digit77 /* Multiply default_width by 10 and add digit */ 78 78 79 79 mov default_width - vesa_init, %bx … … 96 96 mov (%di), %al 97 97 98 # check for digit98 /* Check for digit */ 99 99 100 100 cmp $'0', %al … … 106 106 sub $'0', %al 107 107 108 # multiply default_height by 10 and add digit108 /* Multiply default_height by 10 and add digit */ 109 109 110 110 mov default_height - vesa_init, %bx … … 127 127 mov (%di), %al 128 128 129 # check for digit129 /* Check for digit */ 130 130 131 131 cmp $'0', %al … … 137 137 sub $'0', %al 138 138 139 # multiply default_bpp by 10 and add digit139 /* Multiply default_bpp by 10 and add digit */ 140 140 141 141 mov default_bpp - vesa_init, %bx … … 167 167 168 168 next_mode: 169 # try next mode 169 /* Try next mode */ 170 170 171 mov %gs:(%si), %cx 171 172 cmp $VESA_END_OF_MODES, %cx … … 186 187 jne no_mode 187 188 188 # check for proper attributes (supported, color, graphics, linear framebuffer) 189 /* 190 * Check for proper attributes (supported, 191 * color, graphics, linear framebuffer). 192 */ 189 193 190 194 mov VESA_MODE_ATTRIBUTES_OFFSET(%di), %ax … … 193 197 jne next_mode 194 198 195 # check for proper resolution199 /* Check for proper resolution */ 196 200 197 201 mov default_width - vesa_init, %ax … … 203 207 jne next_mode 204 208 205 # check for proper bpp209 /* Check for proper bpp */ 206 210 207 211 mov default_bpp - vesa_init, %al … … 213 217 jne next_mode 214 218 215 # for 24 bpp modes accept also 32 bit bpp219 /* For 24 bpp modes accept also 32 bit bpp */ 216 220 217 221 mov $32, %al … … 230 234 jnz no_mode 231 235 232 # set 3:2:3 VGA palette236 /* Set 3:2:3 VGA palette */ 233 237 234 238 mov VESA_MODE_BPP_OFFSET(%di), %al … … 241 245 mov $0x100, %ecx 242 246 243 bt $5, %ax # test if VGA compatible registers are present 247 /* Test if VGA compatible registers are present */ 248 bt $5, %ax 244 249 jnc vga_compat 245 250 246 # try VESA routine to set palette 251 /* Use VESA routine to set the palette */ 252 247 253 mov $VESA_SET_PALETTE, %ax 248 254 xor %bl, %bl … … 254 260 255 261 vga_compat: 256 # try VGA registers to set palette 257 movw $0x3c6, %dx # set palette mask 262 263 /* Use VGA registers to set the palette */ 264 265 movw $0x3c6, %dx /* set palette mask */ 258 266 movb $0xff, %al 259 267 outb %al, %dx 260 268 261 movw $0x3c8, %dx # first index to set269 movw $0x3c8, %dx /* first index to set */ 262 270 xor %al, %al 263 271 outb %al, %dx 264 272 265 movw $0x3c9, %dx # data port273 movw $0x3c9, %dx /* data port */ 266 274 267 275 vga_loop: … … 284 292 vga_not_set: 285 293 286 # store mode parameters 287 # eax = bpp[8] scanline[16] 288 # ebx = width[16] height[16] 289 # edx = red_mask[8] red_pos[8] green_mask[8] green_pos[8] 290 # esi = blue_mask[8] blue_pos[8] 291 # edi = linear frame buffer 294 /* 295 * Store mode parameters: 296 * eax = bpp[8] scanline[16] 297 * ebx = width[16] height[16] 298 * edx = red_mask[8] red_pos[8] green_mask[8] green_pos[8] 299 * esi = blue_mask[8] blue_pos[8] 300 * edi = linear frame buffer 301 */ 292 302 293 303 mov VESA_MODE_BPP_OFFSET(%di), %al … … 328 338 329 339 no_mode: 330 # no prefered mode found 340 341 /* No prefered mode found */ 342 331 343 mov $0x111, %cx 332 344 push %di … … 339 351 cmp $VESA_OK, %al 340 352 jnz text_mode 341 jz set_mode # force relative jump353 jz set_mode /* force relative jump */ 342 354 343 355 text_mode: 344 # reset to EGA text mode (because of problems with VESA) 356 357 /* Reset to EGA text mode (because of problems with VESA) */ 358 345 359 mov $0x0003, %ax 346 360 int $0x10 347 361 mov $0xffffffff, %edi 348 362 xor %ax, %ax 349 jz vesa_leave_real # force relative jump363 jz vesa_leave_real /* force relative jump */ 350 364 351 365 vga323: -
kernel/arch/ia32/src/boot/vesa_ret.inc
r4d1be48 re2ea4ab1 1 1 .code32 2 2 vesa_init_protected: 3 cld 4 5 /* Initialize stack pointer */ 6 movl $START_STACK, %esp 7 8 /* Kernel data + stack */ 3 9 movw $gdtselector(KDATA_DES), %cx 4 10 movw %cx, %es 5 11 movw %cx, %fs 6 12 movw %cx, %gs 7 movw %cx, %ds # kernel data + stack13 movw %cx, %ds 8 14 movw %cx, %ss 9 15 10 movl $START_STACK, %esp # initialize stack pointer11 12 16 jmpl $gdtselector(KTEXT_DES), $vesa_meeting_point -
kernel/arch/ia32/src/smp/apic.c
r4d1be48 re2ea4ab1 76 76 77 77 uint32_t apic_id_mask = 0; 78 uint8_t bsp_l_apic = 0; 79 78 80 static irq_t l_apic_timer_irq; 79 81 … … 154 156 } 155 157 158 /** Get Local APIC ID. 159 * 160 * @return Local APIC ID. 161 * 162 */ 163 static uint8_t l_apic_id(void) 164 { 165 l_apic_id_t idreg; 166 167 idreg.value = l_apic[L_APIC_ID]; 168 return idreg.apic_id; 169 } 170 156 171 /** Initialize APIC on BSP. */ 157 172 void apic_init(void) … … 208 223 l_apic_init(); 209 224 l_apic_debug(); 225 226 bsp_l_apic = l_apic_id(); 210 227 } 211 228 … … 460 477 { 461 478 #ifdef LAPIC_VERBOSE 462 printf("LVT on cpu%" PRIs ", LAPIC ID: %" PRIu8 "\n", CPU->id, l_apic_id()); 479 printf("LVT on cpu%" PRIs ", LAPIC ID: %" PRIu8 "\n", 480 CPU->id, l_apic_id()); 463 481 464 482 lvt_tm_t tm; 465 483 tm.value = l_apic[LVT_Tm]; 466 printf("LVT Tm: vector=%hhd, %s, %s, %s\n", tm.vector, delivs_str[tm.delivs], mask_str[tm.masked], tm_mode_str[tm.mode]); 484 printf("LVT Tm: vector=%" PRIu8 ", %s, %s, %s\n", 485 tm.vector, delivs_str[tm.delivs], mask_str[tm.masked], 486 tm_mode_str[tm.mode]); 467 487 468 488 lvt_lint_t lint; 469 489 lint.value = l_apic[LVT_LINT0]; 470 printf("LVT LINT0: vector=%hhd, %s, %s, %s, irr=%d, %s, %s\n", tm.vector, delmod_str[lint.delmod], delivs_str[lint.delivs], intpol_str[lint.intpol], lint.irr, trigmod_str[lint.trigger_mode], mask_str[lint.masked]); 471 lint.value = l_apic[LVT_LINT1]; 472 printf("LVT LINT1: vector=%hhd, %s, %s, %s, irr=%d, %s, %s\n", tm.vector, delmod_str[lint.delmod], delivs_str[lint.delivs], intpol_str[lint.intpol], lint.irr, trigmod_str[lint.trigger_mode], mask_str[lint.masked]); 490 printf("LVT LINT0: vector=%" PRIu8 ", %s, %s, %s, irr=%u, %s, %s\n", 491 tm.vector, delmod_str[lint.delmod], delivs_str[lint.delivs], 492 intpol_str[lint.intpol], lint.irr, trigmod_str[lint.trigger_mode], 493 mask_str[lint.masked]); 494 495 lint.value = l_apic[LVT_LINT1]; 496 printf("LVT LINT1: vector=%" PRIu8 ", %s, %s, %s, irr=%u, %s, %s\n", 497 tm.vector, delmod_str[lint.delmod], delivs_str[lint.delivs], 498 intpol_str[lint.intpol], lint.irr, trigmod_str[lint.trigger_mode], 499 mask_str[lint.masked]); 473 500 474 501 lvt_error_t error; 475 502 error.value = l_apic[LVT_Err]; 476 printf("LVT Err: vector=%hhd, %s, %s\n", error.vector, delivs_str[error.delivs], mask_str[error.masked]); 503 printf("LVT Err: vector=%" PRIu8 ", %s, %s\n", error.vector, 504 delivs_str[error.delivs], mask_str[error.masked]); 477 505 #endif 478 }479 480 /** Get Local APIC ID.481 *482 * @return Local APIC ID.483 *484 */485 uint8_t l_apic_id(void)486 {487 l_apic_id_t idreg;488 489 idreg.value = l_apic[L_APIC_ID];490 return idreg.apic_id;491 506 } 492 507 -
kernel/arch/ia32/src/smp/mps.c
r4d1be48 re2ea4ab1 72 72 static size_t l_intr_entry_cnt = 0; 73 73 74 static uint8_t get_cpu_apic_id(size_t i)74 static uint8_t mps_cpu_apic_id(size_t i) 75 75 { 76 76 ASSERT(i < processor_entry_cnt); … … 79 79 } 80 80 81 static bool is_cpu_enabled(size_t i)81 static bool mps_cpu_enabled(size_t i) 82 82 { 83 83 ASSERT(i < processor_entry_cnt); … … 85 85 /* 86 86 * FIXME: The current local APIC driver limits usable 87 * APICIDs to 8.87 * CPU IDs to 8. 88 88 * 89 89 */ 90 if ( get_cpu_apic_id(i)> 7)90 if (i > 7) 91 91 return false; 92 92 … … 94 94 } 95 95 96 static bool is_bsp(size_t i)96 static bool mps_cpu_bootstrap(size_t i) 97 97 { 98 98 ASSERT(i < processor_entry_cnt); … … 118 118 */ 119 119 struct smp_config_operations mps_config_operations = { 120 .cpu_enabled = is_cpu_enabled,121 .cpu_bootstrap = is_bsp,122 .cpu_apic_id = get_cpu_apic_id,120 .cpu_enabled = mps_cpu_enabled, 121 .cpu_bootstrap = mps_cpu_bootstrap, 122 .cpu_apic_id = mps_cpu_apic_id, 123 123 .irq_to_pin = mps_irq_to_pin 124 124 }; -
kernel/arch/ia32/src/smp/smp.c
r4d1be48 re2ea4ab1 62 62 void smp_init(void) 63 63 { 64 uintptr_t l_apic_address;65 uintptr_t io_apic_address;66 67 64 if (acpi_madt) { 68 65 acpi_madt_parse(); … … 75 72 } 76 73 77 l_apic_address = (uintptr_t) frame_alloc(ONE_FRAME,78 FRAME_ATOMIC | FRAME_KA);79 if (!l_apic_address)80 panic("Cannot allocate address for l_apic.");81 82 io_apic_address = (uintptr_t) frame_alloc(ONE_FRAME,83 FRAME_ATOMIC | FRAME_KA);84 if (!io_apic_address)85 panic("Cannot allocate address for io_apic.");86 87 74 if (config.cpu_count > 1) { 88 page_table_lock(AS_KERNEL, true); 89 page_mapping_insert(AS_KERNEL, l_apic_address, 90 (uintptr_t) l_apic, PAGE_NOT_CACHEABLE | PAGE_WRITE); 91 page_mapping_insert(AS_KERNEL, io_apic_address, 92 (uintptr_t) io_apic, PAGE_NOT_CACHEABLE | PAGE_WRITE); 93 page_table_unlock(AS_KERNEL, true); 94 95 l_apic = (uint32_t *) l_apic_address; 96 io_apic = (uint32_t *) io_apic_address; 75 l_apic = (uint32_t *) hw_map((uintptr_t) l_apic, PAGE_SIZE); 76 io_apic = (uint32_t *) hw_map((uintptr_t) io_apic, PAGE_SIZE); 97 77 } 98 78 } … … 133 113 apic_init(); 134 114 135 uint8_t apic = l_apic_id();136 137 115 for (i = 0; i < config.cpu_count; i++) { 138 116 /* … … 148 126 continue; 149 127 150 if (ops->cpu_apic_id(i) == apic) {151 printf(" %s: bad processor entry #%u, will not send IPI "152 "to myself\n", __FUNCTION__,i);128 if (ops->cpu_apic_id(i) == bsp_l_apic) { 129 printf("kmp: bad processor entry #%u, will not send IPI " 130 "to myself\n", i); 153 131 continue; 154 132 }
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