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1 | /* |
1 | /* |
2 | * Copyright (C) 2005 Jakub Jermar |
2 | * Copyright (C) 2005 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 sparc64 |
29 | /** @addtogroup sparc64 |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | /** @file |
32 | /** @file |
33 | */ |
33 | */ |
34 | 34 | ||
35 | #include <arch.h> |
35 | #include <arch.h> |
36 | #include <debug.h> |
36 | #include <debug.h> |
37 | #include <arch/trap/trap.h> |
37 | #include <arch/trap/trap.h> |
38 | #include <arch/console.h> |
38 | #include <arch/console.h> |
39 | #include <arch/drivers/tick.h> |
39 | #include <arch/drivers/tick.h> |
40 | #include <proc/thread.h> |
40 | #include <proc/thread.h> |
41 | #include <console/console.h> |
41 | #include <console/console.h> |
42 | #include <arch/boot/boot.h> |
42 | #include <arch/boot/boot.h> |
- | 43 | #include <arch/arch.h> |
|
- | 44 | #include <arch/mm/tlb.h> |
|
- | 45 | #include <mm/asid.h> |
|
43 | 46 | ||
44 | bootinfo_t bootinfo; |
47 | bootinfo_t bootinfo; |
45 | 48 | ||
46 | void arch_pre_mm_init(void) |
49 | void arch_pre_mm_init(void) |
47 | { |
50 | { |
48 | trap_init(); |
51 | trap_init(); |
49 | tick_init(); |
52 | tick_init(); |
50 | } |
53 | } |
51 | 54 | ||
52 | void arch_post_mm_init(void) |
55 | void arch_post_mm_init(void) |
53 | { |
56 | { |
54 | standalone_sparc64_console_init(); |
57 | standalone_sparc64_console_init(); |
55 | } |
58 | } |
56 | 59 | ||
57 | void arch_pre_smp_init(void) |
60 | void arch_pre_smp_init(void) |
58 | { |
61 | { |
59 | } |
62 | } |
60 | 63 | ||
61 | void arch_post_smp_init(void) |
64 | void arch_post_smp_init(void) |
62 | { |
65 | { |
63 | thread_t *t; |
66 | thread_t *t; |
64 | 67 | ||
65 | /* |
68 | /* |
66 | * Create thread that polls keyboard. |
69 | * Create thread that polls keyboard. |
67 | */ |
70 | */ |
68 | t = thread_create(kkbdpoll, NULL, TASK, 0, "kkbdpoll"); |
71 | t = thread_create(kkbdpoll, NULL, TASK, 0, "kkbdpoll"); |
69 | if (!t) |
72 | if (!t) |
70 | panic("cannot create kkbdpoll\n"); |
73 | panic("cannot create kkbdpoll\n"); |
71 | thread_ready(t); |
74 | thread_ready(t); |
72 | } |
75 | } |
73 | 76 | ||
74 | void calibrate_delay_loop(void) |
77 | void calibrate_delay_loop(void) |
75 | { |
78 | { |
76 | } |
79 | } |
77 | 80 | ||
78 | /** Acquire console back for kernel |
81 | /** Acquire console back for kernel |
79 | * |
82 | * |
80 | */ |
83 | */ |
81 | void arch_grab_console(void) |
84 | void arch_grab_console(void) |
82 | { |
85 | { |
83 | } |
86 | } |
84 | /** Return console to userspace |
87 | /** Return console to userspace |
85 | * |
88 | * |
86 | */ |
89 | */ |
87 | void arch_release_console(void) |
90 | void arch_release_console(void) |
88 | { |
91 | { |
89 | } |
92 | } |
- | 93 | ||
- | 94 | /** Take over TLB and trap table. |
|
- | 95 | * |
|
- | 96 | * Initialize ITLB and DTLB and switch to kernel |
|
- | 97 | * trap table. |
|
- | 98 | * |
|
- | 99 | * The goal of this function is to disable MMU |
|
- | 100 | * so that both TLBs can be purged and new |
|
- | 101 | * kernel 4M locked entry can be installed. |
|
- | 102 | * After TLB is initialized, MMU is enabled |
|
- | 103 | * again. |
|
- | 104 | * |
|
- | 105 | * Switching MMU off imposes the requirement for |
|
- | 106 | * the kernel to run in identity mapped environment. |
|
- | 107 | * |
|
- | 108 | * @param base Base address that will be hardwired in both TLBs. |
|
- | 109 | */ |
|
- | 110 | void take_over_tlb_and_tt(uintptr_t base) |
|
- | 111 | { |
|
- | 112 | tlb_tag_access_reg_t tag; |
|
- | 113 | tlb_data_t data; |
|
- | 114 | frame_address_t fr; |
|
- | 115 | page_address_t pg; |
|
- | 116 | ||
- | 117 | fr.address = base; |
|
- | 118 | pg.address = base; |
|
- | 119 | ||
- | 120 | immu_disable(); |
|
- | 121 | dmmu_disable(); |
|
- | 122 | ||
- | 123 | /* |
|
- | 124 | * Demap everything, especially OpenFirmware. |
|
- | 125 | */ |
|
- | 126 | itlb_demap(TLB_DEMAP_CONTEXT, TLB_DEMAP_NUCLEUS, 0); |
|
- | 127 | dtlb_demap(TLB_DEMAP_CONTEXT, TLB_DEMAP_NUCLEUS, 0); |
|
- | 128 | ||
- | 129 | /* |
|
- | 130 | * We do identity mapping of 4M-page at 4M. |
|
- | 131 | */ |
|
- | 132 | tag.value = ASID_KERNEL; |
|
- | 133 | tag.vpn = pg.vpn; |
|
- | 134 | ||
- | 135 | itlb_tag_access_write(tag.value); |
|
- | 136 | dtlb_tag_access_write(tag.value); |
|
- | 137 | ||
- | 138 | data.value = 0; |
|
- | 139 | data.v = true; |
|
- | 140 | data.size = PAGESIZE_4M; |
|
- | 141 | data.pfn = fr.pfn; |
|
- | 142 | data.l = true; |
|
- | 143 | data.cp = 1; |
|
- | 144 | data.cv = 1; |
|
- | 145 | data.p = true; |
|
- | 146 | data.w = true; |
|
- | 147 | data.g = true; |
|
- | 148 | ||
- | 149 | itlb_data_in_write(data.value); |
|
- | 150 | dtlb_data_in_write(data.value); |
|
- | 151 | ||
- | 152 | /* |
|
- | 153 | * Register window traps can occur before MMU is enabled again. |
|
- | 154 | * This ensures that any such traps will be handled from |
|
- | 155 | * kernel identity mapped trap handler. |
|
- | 156 | */ |
|
- | 157 | trap_switch_trap_table(); |
|
- | 158 | ||
- | 159 | tlb_invalidate_all(); |
|
- | 160 | ||
- | 161 | dmmu_enable(); |
|
- | 162 | immu_enable(); |
|
- | 163 | } |
|
90 | 164 | ||
91 | /** @} |
165 | /** @} |
92 | */ |
166 | */ |
93 | 167 |