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36 | jermar | 1 | /* |
2 | * Copyright (C) 2005 Jakub Jermar |
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3 | * All rights reserved. |
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4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
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6 | * modification, are permitted provided that the following conditions |
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7 | * are met: |
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8 | * |
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9 | * - Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * - Redistributions in binary form must reproduce the above copyright |
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12 | * notice, this list of conditions and the following disclaimer in the |
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13 | * documentation and/or other materials provided with the distribution. |
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14 | * - The name of the author may not be used to endorse or promote products |
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15 | * derived from this software without specific prior written permission. |
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16 | * |
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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27 | */ |
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28 | |||
1704 | cejka | 29 | /** @addtogroup ia64 ia64 |
1702 | cejka | 30 | * @ingroup others |
31 | * @{ |
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32 | */ |
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33 | /** @file |
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34 | */ |
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35 | |||
78 | jermar | 36 | #include <arch.h> |
37 | #include <arch/ski/ski.h> |
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435 | jermar | 38 | #include <arch/drivers/it.h> |
470 | jermar | 39 | #include <arch/interrupt.h> |
40 | #include <arch/barrier.h> |
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919 | jermar | 41 | #include <arch/asm.h> |
42 | #include <arch/register.h> |
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470 | jermar | 43 | #include <arch/types.h> |
919 | jermar | 44 | #include <arch/context.h> |
962 | jermar | 45 | #include <arch/stack.h> |
919 | jermar | 46 | #include <arch/mm/page.h> |
47 | #include <mm/as.h> |
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48 | #include <config.h> |
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49 | #include <userspace.h> |
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519 | vana | 50 | #include <console/console.h> |
1078 | jermar | 51 | #include <proc/uarg.h> |
1121 | jermar | 52 | #include <syscall/syscall.h> |
519 | vana | 53 | |
1548 | vana | 54 | static int kbd_release=0; |
55 | |||
1223 | jermar | 56 | void arch_pre_main(void) |
57 | { |
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58 | /* Setup usermode init tasks. */ |
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1601 | jermar | 59 | init.cnt = 8; |
1223 | jermar | 60 | init.tasks[0].addr = INIT0_ADDRESS; |
61 | init.tasks[0].size = INIT0_SIZE; |
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1495 | jermar | 62 | init.tasks[1].addr = INIT0_ADDRESS + 0x400000; |
63 | init.tasks[1].size = INIT0_SIZE; |
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64 | init.tasks[2].addr = INIT0_ADDRESS + 0x800000; |
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65 | init.tasks[2].size = INIT0_SIZE; |
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66 | init.tasks[3].addr = INIT0_ADDRESS + 0xc00000; |
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67 | init.tasks[3].size = INIT0_SIZE; |
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68 | init.tasks[4].addr = INIT0_ADDRESS + 0x1000000; |
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69 | init.tasks[4].size = INIT0_SIZE; |
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1541 | jermar | 70 | init.tasks[5].addr = INIT0_ADDRESS + 0x1400000; |
71 | init.tasks[5].size = INIT0_SIZE; |
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1601 | jermar | 72 | init.tasks[6].addr = INIT0_ADDRESS + 0x1800000; |
73 | init.tasks[6].size = INIT0_SIZE; |
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74 | init.tasks[7].addr = INIT0_ADDRESS + 0x1c00000; |
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75 | init.tasks[7].size = INIT0_SIZE; |
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1223 | jermar | 76 | } |
77 | |||
78 | jermar | 78 | void arch_pre_mm_init(void) |
79 | { |
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470 | jermar | 80 | /* Set Interruption Vector Address (i.e. location of interruption vector table). */ |
81 | iva_write((__address) &ivt); |
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82 | srlz_d(); |
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83 | |||
102 | jermar | 84 | ski_init_console(); |
1223 | jermar | 85 | it_init(); |
78 | jermar | 86 | } |
87 | |||
88 | void arch_post_mm_init(void) |
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89 | { |
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1507 | vana | 90 | ski_set_console_sysinfo(); |
78 | jermar | 91 | } |
503 | jermar | 92 | |
93 | void arch_pre_smp_init(void) |
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94 | { |
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95 | } |
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96 | |||
97 | void arch_post_smp_init(void) |
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98 | { |
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99 | } |
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919 | jermar | 100 | |
101 | /** Enter userspace and never return. */ |
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1078 | jermar | 102 | void userspace(uspace_arg_t *kernel_uarg) |
919 | jermar | 103 | { |
104 | psr_t psr; |
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105 | rsc_t rsc; |
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106 | |||
107 | psr.value = psr_read(); |
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108 | psr.cpl = PL_USER; |
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109 | psr.i = true; /* start with interrupts enabled */ |
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110 | psr.ic = true; |
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111 | psr.ri = 0; /* start with instruction #0 */ |
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993 | jermar | 112 | psr.bn = 1; /* start in bank 0 */ |
919 | jermar | 113 | |
114 | __asm__ volatile ("mov %0 = ar.rsc\n" : "=r" (rsc.value)); |
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115 | rsc.loadrs = 0; |
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116 | rsc.be = false; |
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117 | rsc.pl = PL_USER; |
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118 | rsc.mode = 3; /* eager mode */ |
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119 | |||
1078 | jermar | 120 | switch_to_userspace((__address) kernel_uarg->uspace_entry, |
121 | ((__address) kernel_uarg->uspace_stack)+PAGE_SIZE-ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT), |
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1168 | vana | 122 | ((__address) kernel_uarg->uspace_stack)+PAGE_SIZE, |
1078 | jermar | 123 | (__address) kernel_uarg->uspace_uarg, |
124 | psr.value, rsc.value); |
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919 | jermar | 125 | |
126 | while (1) { |
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127 | ; |
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128 | } |
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129 | } |
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1121 | jermar | 130 | |
131 | /** Set thread-local-storage pointer. |
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132 | * |
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133 | * We use r13 (a.k.a. tp) for this purpose. |
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134 | */ |
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135 | __native sys_tls_set(__native addr) |
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136 | { |
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137 | return 0; |
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138 | } |
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1474 | palkovsky | 139 | |
140 | /** Acquire console back for kernel |
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141 | * |
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142 | */ |
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143 | void arch_grab_console(void) |
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144 | { |
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1548 | vana | 145 | kbd_release=kbd_uspace; |
146 | kbd_uspace=0; |
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1474 | palkovsky | 147 | } |
148 | /** Return console to userspace |
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149 | * |
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150 | */ |
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151 | void arch_release_console(void) |
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152 | { |
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1548 | vana | 153 | kbd_uspace=kbd_release; |
1474 | palkovsky | 154 | } |
1702 | cejka | 155 | |
156 | /** @} |
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157 | */ |
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158 |