projects / dragonfly.git / blame
| Commit | Line | Data |
|---|---|---|
| d7f50089 YY |
1 | /*- |
| 2 | * Copyright (c) 2003 Peter Wemm <peter@FreeBSD.org> | |
| 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 | * 1. Redistributions of source code must retain the above copyright | |
| 9 | * notice, this list of conditions and the following disclaimer. | |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright | |
| 11 | * notice, this list of conditions and the following disclaimer in the | |
| 12 | * documentation and/or other materials provided with the distribution. | |
| 13 | * | |
| 14 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND | |
| 15 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 16 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 17 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |
| 18 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 19 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 20 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 21 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 22 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 23 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 24 | * SUCH DAMAGE. | |
| 25 | * | |
| 26 | * $FreeBSD: src/sys/amd64/amd64/locore.S,v 1.175 2003/05/31 06:54:28 peter Exp $ | |
| d7f50089 YY |
27 | */ |
| 28 | ||
| 29 | #include <machine/asmacros.h> | |
| 30 | #include <machine/psl.h> | |
| 31 | #include <machine/pmap.h> | |
| 32 | #include <machine/specialreg.h> | |
| 33 | ||
| 34 | #include "assym.s" | |
| 35 | ||
| 36 | /* | |
| d7f50089 YY |
37 | * Compiled KERNBASE location |
| 38 | */ | |
| 39 | .globl kernbase,loc_PTmap,loc_PDmap,loc_PDPmap,loc_PML4map,loc_PML4pml4e,dmapbase,dmapend | |
| 40 | .set kernbase,KERNBASE | |
| 41 | .set loc_PTmap,addr_PTmap | |
| 42 | .set loc_PDmap,addr_PDmap | |
| 43 | .set loc_PDPmap,addr_PDPmap | |
| 44 | .set loc_PML4map,addr_PML4map | |
| 45 | .set loc_PML4pml4e,addr_PML4pml4e | |
| 46 | .set dmapbase,DMAP_MIN_ADDRESS | |
| 47 | .set dmapend,DMAP_MAX_ADDRESS | |
| 48 | ||
| 49 | .text | |
| 50 | /********************************************************************** | |
| 51 | * | |
| 52 | * This is where the loader trampoline start us, set the ball rolling... | |
| 53 | * | |
| 54 | * We are called with the stack looking like this: | |
| 55 | * 0(%rsp) = 32 bit return address (cannot be used) | |
| 56 | * 4(%rsp) = 32 bit modulep | |
| 57 | * 8(%rsp) = 32 bit kernend | |
| 58 | * | |
| 59 | * We are already in long mode, on a 64 bit %cs and running at KERNBASE. | |
| 60 | */ | |
| 61 | NON_GPROF_ENTRY(btext) | |
| 62 | ||
| 63 | /* Tell the bios to warmboot next time */ | |
| 64 | movw $0x1234,0x472 | |
| 65 | ||
| 66 | /* Don't trust what the loader gives for rflags. */ | |
| 67 | pushq $PSL_KERNEL | |
| 68 | popfq | |
| 69 | ||
| 70 | /* Find the metadata pointers before we lose them */ | |
| 71 | movq %rsp, %rbp | |
| 72 | movl 4(%rbp),%edi /* modulep (arg 1) */ | |
| 73 | movl 8(%rbp),%esi /* kernend (arg 2) */ | |
| 74 | ||
| 75 | /* Get onto a stack that we can trust - there is no going back now. */ | |
| 76 | movq $bootstack,%rsp | |
| 77 | xorl %ebp, %ebp | |
| 78 | ||
| c8fe38ae | 79 | call hammer_time /* set up cpu for unix operation */ |
| d7f50089 YY |
80 | movq %rax,%rsp /* set up kstack for mi_startup() */ |
| 81 | call mi_startup /* autoconfiguration, mountroot etc */ | |
| 82 | 0: hlt | |
| 83 | jmp 0b | |
| 84 | ||
| 85 | .bss | |
| 86 | ALIGN_DATA /* just to be sure */ | |
| 87 | .space 0x1000 /* space for bootstack - temporary stack */ | |
| 88 | bootstack: |