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| 1 | /* |
1 | /* |
| 2 | * Copyright (C) 2001-2004 Jakub Jermar |
2 | * Copyright (C) 2001-2004 Jakub Jermar |
| 3 | * All rights reserved. |
3 | * All rights reserved. |
| 4 | * |
4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
7 | * are met: |
| 8 | * |
8 | * |
| 9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
| 11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
| 13 | * documentation and/or other materials provided with the distribution. |
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 |
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. |
15 | * derived from this software without specific prior written permission. |
| 16 | * |
16 | * |
| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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 |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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 |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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 |
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. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | */ |
27 | */ |
| 28 | 28 | ||
| 29 | /** @addtogroup xen32mm |
29 | /** @addtogroup xen32mm |
| 30 | * @{ |
30 | * @{ |
| 31 | */ |
31 | */ |
| 32 | /** @file |
32 | /** @file |
| 33 | * @ingroup xen32mm |
33 | * @ingroup xen32mm |
| 34 | */ |
34 | */ |
| 35 | 35 | ||
| 36 | #include <mm/frame.h> |
36 | #include <mm/frame.h> |
| 37 | #include <arch/mm/frame.h> |
37 | #include <arch/mm/frame.h> |
| 38 | #include <mm/as.h> |
38 | #include <mm/as.h> |
| 39 | #include <config.h> |
39 | #include <config.h> |
| 40 | #include <arch/boot/boot.h> |
40 | #include <arch/boot/boot.h> |
| - | 41 | #include <arch/hypercall.h> |
|
| 41 | #include <panic.h> |
42 | #include <panic.h> |
| 42 | #include <debug.h> |
43 | #include <debug.h> |
| 43 | #include <align.h> |
44 | #include <align.h> |
| 44 | #include <macros.h> |
45 | #include <macros.h> |
| 45 | 46 | ||
| 46 | #include <print.h> |
- | |
| 47 | #include <console/cmd.h> |
47 | #include <console/cmd.h> |
| 48 | #include <console/kconsole.h> |
48 | #include <console/kconsole.h> |
| 49 | 49 | ||
| 50 | uintptr_t last_frame = 0; |
50 | uintptr_t last_frame = 0; |
| 51 | 51 | ||
| - | 52 | #define L1_PT_SHIFT 10 |
|
| - | 53 | #define L2_PT_SHIFT 0 |
|
| - | 54 | ||
| - | 55 | #define L1_OFFSET_MASK 0x3ff |
|
| - | 56 | #define L2_OFFSET_MASK 0x3ff |
|
| - | 57 | ||
| - | 58 | #define PFN2PTL1_OFFSET(pfn) ((pfn >> L1_PT_SHIFT) & L1_OFFSET_MASK) |
|
| - | 59 | #define PFN2PTL2_OFFSET(pfn) ((pfn >> L2_PT_SHIFT) & L2_OFFSET_MASK) |
|
| - | 60 | ||
| - | 61 | #define PAGE_MASK (~(PAGE_SIZE - 1)) |
|
| - | 62 | ||
| - | 63 | #define PTE2ADDR(pte) (pte & PAGE_MASK) |
|
| - | 64 | ||
| - | 65 | #define _PAGE_PRESENT 0x001UL |
|
| - | 66 | #define _PAGE_RW 0x002UL |
|
| - | 67 | #define _PAGE_USER 0x004UL |
|
| - | 68 | #define _PAGE_PWT 0x008UL |
|
| - | 69 | #define _PAGE_PCD 0x010UL |
|
| - | 70 | #define _PAGE_ACCESSED 0x020UL |
|
| - | 71 | #define _PAGE_DIRTY 0x040UL |
|
| - | 72 | #define _PAGE_PAT 0x080UL |
|
| - | 73 | #define _PAGE_PSE 0x080UL |
|
| - | 74 | #define _PAGE_GLOBAL 0x100UL |
|
| - | 75 | ||
| - | 76 | #define L1_PROT (_PAGE_PRESENT | _PAGE_ACCESSED) |
|
| - | 77 | #define L2_PROT (_PAGE_PRESENT | _PAGE_RW | _PAGE_ACCESSED) |
|
| - | 78 | ||
| 52 | void frame_arch_init(void) |
79 | void frame_arch_init(void) |
| 53 | { |
80 | { |
| 54 | if (config.cpu_active == 1) { |
81 | if (config.cpu_active == 1) { |
| - | 82 | /* The only memory zone starts just after page table */ |
|
| 55 | pfn_t start = ADDR2PFN(ALIGN_UP(KA2PA(start_info.pt_base), PAGE_SIZE)) + start_info.nr_pt_frames; |
83 | pfn_t start = ADDR2PFN(ALIGN_UP(KA2PA(start_info.pt_base), PAGE_SIZE)) + start_info.nr_pt_frames; |
| 56 | size_t size = start_info.nr_pages - start; |
84 | size_t size = start_info.nr_pages - start; |
| 57 | 85 | ||
| - | 86 | /* Create identity mapping */ |
|
| - | 87 | pfn_t phys; |
|
| - | 88 | for (phys = start; phys < start + size; phys++) { |
|
| - | 89 | mmu_update_t updates[1]; |
|
| - | 90 | pfn_t virt = ADDR2PFN(PA2KA(PFN2ADDR(phys))); |
|
| - | 91 | ||
| - | 92 | size_t ptl1_offset = PFN2PTL1_OFFSET(virt); |
|
| - | 93 | size_t ptl2_offset = PFN2PTL2_OFFSET(virt); |
|
| - | 94 | ||
| - | 95 | unsigned long *ptl2_base = (unsigned long *) PTE2ADDR(start_info.pt_base[ptl1_offset]); |
|
| - | 96 | ||
| - | 97 | if (ptl2_base == 0) { |
|
| - | 98 | mmuext_op_t mmu_ext; |
|
| - | 99 | ||
| - | 100 | pfn_t virt2 = ADDR2PFN(PA2KA(PFN2ADDR(start))); |
|
| - | 101 | ||
| - | 102 | /* New L1 page table entry needed */ |
|
| - | 103 | memsetb(PFN2ADDR(virt2), PAGE_SIZE, 0); |
|
| - | 104 | ||
| - | 105 | size_t ptl1_offset2 = PFN2PTL1_OFFSET(virt2); |
|
| - | 106 | size_t ptl2_offset2 = PFN2PTL2_OFFSET(virt2); |
|
| - | 107 | unsigned long *ptl2_base2 = (unsigned long *) PTE2ADDR(start_info.pt_base[ptl1_offset2]); |
|
| - | 108 | ||
| - | 109 | if (ptl2_base2 == 0) |
|
| - | 110 | panic("Unable to find page table reference"); |
|
| - | 111 | ||
| - | 112 | updates[0].ptr = (uintptr_t) &ptl2_base2[ptl2_offset2]; |
|
| - | 113 | updates[0].val = PFN2ADDR(start_info.mfn_list[start]) | L1_PROT; |
|
| - | 114 | if (xen_mmu_update(updates, 1, NULL, DOMID_SELF) < 0) |
|
| - | 115 | panic("Unable to map new page table"); |
|
| - | 116 | ||
| - | 117 | mmu_ext.cmd = MMUEXT_PIN_L1_TABLE; |
|
| - | 118 | mmu_ext.arg1.mfn = start_info.mfn_list[start]; |
|
| - | 119 | if (xen_mmuext_op(&mmu_ext, 1, NULL, DOMID_SELF) < 0) |
|
| - | 120 | panic("Error pinning new page table"); |
|
| - | 121 | ||
| - | 122 | unsigned long *ptl0 = (unsigned long *) PFN2ADDR(start_info.mfn_list[ADDR2PFN(KA2PA(start_info.pt_base))]); |
|
| - | 123 | ||
| - | 124 | updates[0].ptr = (uintptr_t) &ptl0[ptl1_offset]; |
|
| - | 125 | updates[0].val = PFN2ADDR(start_info.mfn_list[start]) | L2_PROT; |
|
| - | 126 | if (xen_mmu_update(updates, 1, NULL, DOMID_SELF) < 0) |
|
| - | 127 | panic("Unable to update PTE for page table"); |
|
| - | 128 | ||
| - | 129 | ptl2_base = (unsigned long *) PTE2ADDR(start_info.pt_base[ptl1_offset]); |
|
| - | 130 | start++; |
|
| - | 131 | size--; |
|
| - | 132 | } |
|
| - | 133 | ||
| - | 134 | updates[0].ptr = (uintptr_t) &ptl2_base[ptl2_offset]; |
|
| - | 135 | updates[0].val = PFN2ADDR(start_info.mfn_list[phys]) | L2_PROT; |
|
| - | 136 | if (xen_mmu_update(updates, 1, NULL, DOMID_SELF) < 0) |
|
| - | 137 | panic("Unable to update PTE"); |
|
| - | 138 | } |
|
| - | 139 | ||
| 58 | zone_create(start, size, start, 0); |
140 | zone_create(start, size, start, 0); |
| 59 | last_frame = start + size; |
141 | last_frame = start + size; |
| 60 | } |
142 | } |
| 61 | } |
143 | } |
| 62 | 144 | ||
| 63 | /** @} |
145 | /** @} |
| 64 | */ |
146 | */ |
| 65 | 147 | ||