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1 | jermar | 1 | /* |
2 | * Copyright (C) 2001-2004 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 | |||
29 | #include <arch/asm.h> |
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97 | jermar | 30 | #include <context.h> |
1 | jermar | 31 | #include <print.h> |
68 | decky | 32 | #include <panic.h> |
561 | decky | 33 | #include <debug.h> |
1 | jermar | 34 | #include <config.h> |
35 | #include <time/clock.h> |
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36 | #include <proc/scheduler.h> |
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37 | #include <proc/thread.h> |
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38 | #include <proc/task.h> |
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39 | #include <main/kinit.h> |
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675 | jermar | 40 | #include <main/version.h> |
518 | jermar | 41 | #include <console/kconsole.h> |
1 | jermar | 42 | #include <cpu.h> |
402 | jermar | 43 | #include <align.h> |
578 | palkovsky | 44 | #include <interrupt.h> |
146 | cejka | 45 | #include <arch/mm/memory_init.h> |
373 | jermar | 46 | #include <mm/heap.h> |
1 | jermar | 47 | #include <mm/frame.h> |
48 | #include <mm/page.h> |
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5 | jermar | 49 | #include <mm/tlb.h> |
373 | jermar | 50 | #include <mm/vm.h> |
1 | jermar | 51 | #include <synch/waitq.h> |
210 | decky | 52 | #include <arch/arch.h> |
1 | jermar | 53 | #include <arch.h> |
76 | jermar | 54 | #include <arch/faddr.h> |
106 | jermar | 55 | #include <typedefs.h> |
56 | |||
675 | jermar | 57 | #ifdef CONFIG_SMP |
58 | #include <arch/smp/apic.h> |
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59 | #include <arch/smp/mps.h> |
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60 | #endif /* CONFIG_SMP */ |
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61 | #include <smp/smp.h> |
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62 | |||
63 | config_t config; /**< Global configuration structure. */ |
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64 | |||
1 | jermar | 65 | context_t ctx; |
66 | |||
523 | jermar | 67 | /** |
68 | * These 'hardcoded' variables will be intialized by |
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105 | jermar | 69 | * the linker or the low level assembler code with |
70 | * appropriate sizes and addresses. |
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1 | jermar | 71 | */ |
37 | jermar | 72 | __address hardcoded_load_address = 0; |
106 | jermar | 73 | size_t hardcoded_ktext_size = 0; |
74 | size_t hardcoded_kdata_size = 0; |
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1 | jermar | 75 | |
506 | decky | 76 | __address init_addr = 0; |
77 | size_t init_size = 0; |
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78 | |||
1 | jermar | 79 | void main_bsp(void); |
80 | void main_ap(void); |
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81 | |||
82 | /* |
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83 | * These two functions prevent stack from underflowing during the |
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84 | * kernel boot phase when SP is set to the very top of the reserved |
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85 | * space. The stack could get corrupted by a fooled compiler-generated |
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86 | * pop sequence otherwise. |
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87 | */ |
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88 | static void main_bsp_separated_stack(void); |
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625 | palkovsky | 89 | #ifdef CONFIG_SMP |
1 | jermar | 90 | static void main_ap_separated_stack(void); |
625 | palkovsky | 91 | #endif |
1 | jermar | 92 | |
108 | decky | 93 | /** Bootstrap CPU main kernel routine |
94 | * |
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95 | * Initializes the kernel by bootstrap CPU. |
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675 | jermar | 96 | * This function passes control directly to |
97 | * main_bsp_separated_stack(). |
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108 | decky | 98 | * |
413 | jermar | 99 | * Assuming interrupts_disable(). |
108 | decky | 100 | * |
1 | jermar | 101 | */ |
102 | void main_bsp(void) |
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103 | { |
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104 | config.cpu_count = 1; |
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105 | config.cpu_active = 1; |
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651 | decky | 106 | |
369 | jermar | 107 | config.base = hardcoded_load_address; |
108 | config.memory_size = get_memory_size(); |
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628 | decky | 109 | config.init_addr = init_addr; |
110 | config.init_size = init_size; |
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210 | decky | 111 | |
651 | decky | 112 | if (init_size > 0) |
113 | config.heap_addr = init_addr + init_size; |
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114 | else |
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115 | config.heap_addr = hardcoded_load_address + hardcoded_ktext_size + hardcoded_kdata_size; |
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210 | decky | 116 | |
651 | decky | 117 | config.heap_size = CONFIG_HEAP_SIZE + (config.memory_size / FRAME_SIZE) * sizeof(frame_t); |
118 | |||
119 | config.kernel_size = ALIGN_UP(config.heap_addr - hardcoded_load_address + config.heap_size, PAGE_SIZE); |
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120 | config.heap_delta = config.kernel_size - (config.heap_addr - hardcoded_load_address + config.heap_size); |
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121 | config.kernel_size = config.kernel_size + CONFIG_STACK_SIZE; |
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122 | |||
47 | jermar | 123 | context_save(&ctx); |
651 | decky | 124 | context_set(&ctx, FADDR(main_bsp_separated_stack), config.base + config.kernel_size, CONFIG_STACK_SIZE); |
47 | jermar | 125 | context_restore(&ctx); |
1 | jermar | 126 | /* not reached */ |
127 | } |
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128 | |||
108 | decky | 129 | |
130 | /** Bootstrap CPU main kernel routine stack wrapper |
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131 | * |
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132 | * Second part of main_bsp(). |
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133 | * |
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134 | */ |
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174 | jermar | 135 | void main_bsp_separated_stack(void) |
136 | { |
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1 | jermar | 137 | vm_t *m; |
138 | task_t *k; |
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139 | thread_t *t; |
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207 | decky | 140 | |
184 | jermar | 141 | the_initialize(THE); |
235 | decky | 142 | |
517 | jermar | 143 | /* |
144 | * kconsole data structures must be initialized very early |
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145 | * because other subsystems will register their respective |
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146 | * commands. |
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147 | */ |
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148 | kconsole_init(); |
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623 | jermar | 149 | |
578 | palkovsky | 150 | /* Exception handler initialization, before architecture |
673 | jermar | 151 | * starts adding its own handlers |
578 | palkovsky | 152 | */ |
153 | exc_init(); |
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517 | jermar | 154 | |
26 | jermar | 155 | arch_pre_mm_init(); |
651 | decky | 156 | early_heap_init(config.heap_addr, config.heap_size + config.heap_delta); |
23 | jermar | 157 | frame_init(); |
158 | page_init(); |
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159 | tlb_init(); |
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160 | arch_post_mm_init(); |
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673 | jermar | 161 | |
162 | version_print(); |
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163 | |||
77 | jermar | 164 | printf("%P: hardcoded_ktext_size=%dK, hardcoded_kdata_size=%dK\n", |
1 | jermar | 165 | config.base, hardcoded_ktext_size/1024, hardcoded_kdata_size/1024); |
166 | |||
503 | jermar | 167 | arch_pre_smp_init(); |
34 | jermar | 168 | smp_init(); |
149 | jermar | 169 | printf("config.memory_size=%dM\n", config.memory_size/(1024*1024)); |
27 | jermar | 170 | printf("config.cpu_count=%d\n", config.cpu_count); |
1 | jermar | 171 | |
172 | cpu_init(); |
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220 | vana | 173 | |
1 | jermar | 174 | calibrate_delay_loop(); |
640 | jermar | 175 | |
1 | jermar | 176 | timeout_init(); |
177 | scheduler_init(); |
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178 | task_init(); |
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179 | thread_init(); |
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628 | decky | 180 | |
181 | if (config.init_size > 0) |
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182 | printf("config.init_addr=%X, config.init_size=%d\n", config.init_addr, config.init_size); |
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1 | jermar | 183 | |
184 | /* |
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185 | * Create kernel vm mapping. |
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186 | */ |
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167 | jermar | 187 | m = vm_create(GET_PTL0_ADDRESS()); |
210 | decky | 188 | if (!m) |
189 | panic("can't create kernel vm address space\n"); |
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1 | jermar | 190 | |
191 | /* |
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192 | * Create kernel task. |
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193 | */ |
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194 | k = task_create(m); |
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210 | decky | 195 | if (!k) |
196 | panic("can't create kernel task\n"); |
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197 | |||
1 | jermar | 198 | /* |
199 | * Create the first thread. |
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200 | */ |
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201 | t = thread_create(kinit, NULL, k, 0); |
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210 | decky | 202 | if (!t) |
203 | panic("can't create kinit thread\n"); |
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1 | jermar | 204 | thread_ready(t); |
675 | jermar | 205 | |
1 | jermar | 206 | /* |
207 | * This call to scheduler() will return to kinit, |
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208 | * starting the thread of kernel threads. |
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209 | */ |
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210 | scheduler(); |
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211 | /* not reached */ |
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212 | } |
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213 | |||
108 | decky | 214 | |
458 | decky | 215 | #ifdef CONFIG_SMP |
108 | decky | 216 | /** Application CPUs main kernel routine |
217 | * |
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218 | * Executed by application processors, temporary stack |
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219 | * is at ctx.sp which was set during BP boot. |
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675 | jermar | 220 | * This function passes control directly to |
221 | * main_ap_separated_stack(). |
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108 | decky | 222 | * |
413 | jermar | 223 | * Assuming interrupts_disable()'d. |
108 | decky | 224 | * |
1 | jermar | 225 | */ |
226 | void main_ap(void) |
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227 | { |
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228 | /* |
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229 | * Incrementing the active CPU counter will guarantee that the |
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230 | * pm_init() will not attempt to build GDT and IDT tables again. |
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231 | * Neither frame_init() will do the complete thing. Neither cpu_init() |
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232 | * will do. |
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233 | */ |
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234 | config.cpu_active++; |
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235 | |||
192 | jermar | 236 | /* |
237 | * The THE structure is well defined because ctx.sp is used as stack. |
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238 | */ |
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239 | the_initialize(THE); |
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298 | decky | 240 | |
26 | jermar | 241 | arch_pre_mm_init(); |
1 | jermar | 242 | frame_init(); |
243 | page_init(); |
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389 | jermar | 244 | tlb_init(); |
26 | jermar | 245 | arch_post_mm_init(); |
298 | decky | 246 | |
1 | jermar | 247 | cpu_init(); |
298 | decky | 248 | |
1 | jermar | 249 | calibrate_delay_loop(); |
250 | |||
251 | l_apic_init(); |
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252 | l_apic_debug(); |
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253 | |||
192 | jermar | 254 | the_copy(THE, (the_t *) CPU->stack); |
1 | jermar | 255 | |
256 | /* |
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257 | * If we woke kmp up before we left the kernel stack, we could |
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258 | * collide with another CPU coming up. To prevent this, we |
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259 | * switch to this cpu's private stack prior to waking kmp up. |
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260 | */ |
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414 | jermar | 261 | context_set(&CPU->saved_context, FADDR(main_ap_separated_stack), (__address) CPU->stack, CPU_STACK_SIZE); |
47 | jermar | 262 | context_restore(&CPU->saved_context); |
1 | jermar | 263 | /* not reached */ |
264 | } |
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265 | |||
108 | decky | 266 | |
267 | /** Application CPUs main kernel routine stack wrapper |
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268 | * |
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269 | * Second part of main_ap(). |
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270 | * |
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271 | */ |
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1 | jermar | 272 | void main_ap_separated_stack(void) |
273 | { |
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274 | /* |
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275 | * Configure timeouts for this cpu. |
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276 | */ |
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277 | timeout_init(); |
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278 | |||
279 | waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST); |
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280 | scheduler(); |
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281 | /* not reached */ |
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282 | } |
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458 | decky | 283 | #endif /* CONFIG_SMP */ |