Rev 532 | Rev 561 | Go to most recent revision | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed
Rev 532 | Rev 534 | ||
---|---|---|---|
Line -... | Line 1... | ||
- | 1 | /* |
|
- | 2 | * Copyright (C) 2001-2004 Jakub Jermar |
|
- | 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 | * |
|
- | 9 | * - Redistributions of source code must retain the above copyright |
|
- | 10 | * notice, this list of conditions and the following disclaimer. |
|
- | 11 | * - Redistributions in binary form must reproduce the above copyright |
|
- | 12 | * notice, this list of conditions and the following disclaimer in the |
|
- | 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 |
|
- | 15 | * derived from this software without specific prior written permission. |
|
- | 16 | * |
|
- | 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 |
|
- | 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
|
- | 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
|
- | 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
|
- | 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 |
|
- | 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 |
|
- | 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
|
- | 27 | */ |
|
- | 28 | ||
- | 29 | #include <arch/asm.h> |
|
- | 30 | #include <context.h> |
|
- | 31 | #include <print.h> |
|
- | 32 | #include <panic.h> |
|
- | 33 | #include <config.h> |
|
- | 34 | #include <time/clock.h> |
|
- | 35 | #include <proc/scheduler.h> |
|
- | 36 | #include <proc/thread.h> |
|
- | 37 | #include <proc/task.h> |
|
- | 38 | #include <main/kinit.h> |
|
- | 39 | #include <console/kconsole.h> |
|
- | 40 | #include <cpu.h> |
|
- | 41 | #include <align.h> |
|
- | 42 | ||
- | 43 | #ifdef CONFIG_SMP |
|
- | 44 | #include <arch/smp/apic.h> |
|
- | 45 | #include <arch/smp/mps.h> |
|
- | 46 | #endif /* CONFIG_SMP */ |
|
- | 47 | ||
- | 48 | #include <smp/smp.h> |
|
- | 49 | ||
- | 50 | #include <arch/mm/memory_init.h> |
|
- | 51 | #include <mm/heap.h> |
|
- | 52 | #include <mm/frame.h> |
|
- | 53 | #include <mm/page.h> |
|
- | 54 | #include <mm/tlb.h> |
|
- | 55 | #include <mm/vm.h> |
|
- | 56 | ||
- | 57 | #include <synch/waitq.h> |
|
- | 58 | ||
- | 59 | #include <arch/arch.h> |
|
- | 60 | #include <arch.h> |
|
- | 61 | #include <arch/faddr.h> |
|
- | 62 | ||
- | 63 | #include <typedefs.h> |
|
- | 64 | ||
- | 65 | char *project = "SPARTAN kernel"; |
|
- | 66 | char *release = RELEASE " (" NAME ")"; |
|
- | 67 | #ifdef TAG |
|
- | 68 | char *rr_delimiter = "\n"; |
|
- | 69 | char *revision = TAG; |
|
- | 70 | #else |
|
- | 71 | char *rr_delimiter = ""; |
|
- | 72 | char *revision = ""; |
|
- | 73 | #endif |
|
- | 74 | char *copyright = "Copyright (C) 2001-2005 HelenOS project"; |
|
- | 75 | ||
- | 76 | config_t config; |
|
- | 77 | context_t ctx; |
|
- | 78 | ||
- | 79 | /** |
|
- | 80 | * These 'hardcoded' variables will be intialized by |
|
- | 81 | * the linker or the low level assembler code with |
|
- | 82 | * appropriate sizes and addresses. |
|
- | 83 | */ |
|
- | 84 | __address hardcoded_load_address = 0; |
|
- | 85 | size_t hardcoded_ktext_size = 0; |
|
- | 86 | size_t hardcoded_kdata_size = 0; |
|
- | 87 | ||
- | 88 | __address init_addr = 0; |
|
- | 89 | size_t init_size = 0; |
|
- | 90 | ||
- | 91 | /** |
|
- | 92 | * Size of memory in bytes taken by kernel and heap. |
|
- | 93 | */ |
|
- | 94 | static size_t kernel_size; |
|
- | 95 | ||
- | 96 | /** |
|
- | 97 | * Size of heap. |
|
- | 98 | */ |
|
- | 99 | static size_t heap_size; |
|
- | 100 | ||
- | 101 | ||
- | 102 | /** |
|
- | 103 | * Extra space between heap and stack |
|
- | 104 | * enforced by alignment requirements. |
|
- | 105 | */ |
|
- | 106 | static size_t heap_delta; |
|
- | 107 | ||
- | 108 | void main_bsp(void); |
|
- | 109 | void main_ap(void); |
|
- | 110 | ||
- | 111 | /* |
|
- | 112 | * These two functions prevent stack from underflowing during the |
|
- | 113 | * kernel boot phase when SP is set to the very top of the reserved |
|
- | 114 | * space. The stack could get corrupted by a fooled compiler-generated |
|
- | 115 | * pop sequence otherwise. |
|
- | 116 | */ |
|
- | 117 | static void main_bsp_separated_stack(void); |
|
- | 118 | static void main_ap_separated_stack(void); |
|
- | 119 | ||
- | 120 | /** Bootstrap CPU main kernel routine |
|
- | 121 | * |
|
- | 122 | * Initializes the kernel by bootstrap CPU. |
|
- | 123 | * |
|
- | 124 | * Assuming interrupts_disable(). |
|
- | 125 | * |
|
- | 126 | */ |
|
- | 127 | void main_bsp(void) |
|
- | 128 | { |
|
- | 129 | config.cpu_count = 1; |
|
- | 130 | config.cpu_active = 1; |
|
- | 131 | config.base = hardcoded_load_address; |
|
- | 132 | config.memory_size = get_memory_size(); |
|
- | 133 | ||
- | 134 | heap_size = CONFIG_HEAP_SIZE + (config.memory_size/FRAME_SIZE)*sizeof(frame_t); |
|
- | 135 | kernel_size = ALIGN(hardcoded_ktext_size + hardcoded_kdata_size + heap_size, PAGE_SIZE); |
|
- | 136 | heap_delta = kernel_size - (hardcoded_ktext_size + hardcoded_kdata_size + heap_size); |
|
- | 137 | ||
- | 138 | config.kernel_size = kernel_size + CONFIG_STACK_SIZE; |
|
- | 139 | ||
- | 140 | context_save(&ctx); |
|
- | 141 | early_mapping(config.base + hardcoded_ktext_size + hardcoded_kdata_size, CONFIG_STACK_SIZE + heap_size + heap_delta); |
|
- | 142 | context_set(&ctx, FADDR(main_bsp_separated_stack), config.base + kernel_size, CONFIG_STACK_SIZE); |
|
- | 143 | context_restore(&ctx); |
|
- | 144 | /* not reached */ |
|
- | 145 | } |
|
- | 146 | ||
- | 147 | ||
- | 148 | /** Bootstrap CPU main kernel routine stack wrapper |
|
- | 149 | * |
|
- | 150 | * Second part of main_bsp(). |
|
- | 151 | * |
|
- | 152 | */ |
|
- | 153 | void main_bsp_separated_stack(void) |
|
- | 154 | { |
|
- | 155 | vm_t *m; |
|
- | 156 | task_t *k; |
|
- | 157 | thread_t *t; |
|
- | 158 | ||
- | 159 | the_initialize(THE); |
|
- | 160 | ||
- | 161 | /* |
|
- | 162 | * kconsole data structures must be initialized very early |
|
- | 163 | * because other subsystems will register their respective |
|
- | 164 | * commands. |
|
- | 165 | */ |
|
- | 166 | kconsole_init(); |
|
- | 167 | ||
- | 168 | arch_pre_mm_init(); |
|
- | 169 | early_heap_init(config.base + hardcoded_ktext_size + hardcoded_kdata_size, heap_size + heap_delta); |
|
- | 170 | frame_init(); |
|
- | 171 | page_init(); |
|
- | 172 | tlb_init(); |
|
- | 173 | arch_post_mm_init(); |
|
- | 174 | ||
- | 175 | printf("%s, release %s%s%s\n%s\n", project, release, rr_delimiter, revision, copyright); |
|
- | 176 | printf("%P: hardcoded_ktext_size=%dK, hardcoded_kdata_size=%dK\n", |
|
- | 177 | config.base, hardcoded_ktext_size/1024, hardcoded_kdata_size/1024); |
|
- | 178 | ||
- | 179 | arch_pre_smp_init(); |
|
- | 180 | smp_init(); |
|
- | 181 | printf("config.memory_size=%dM\n", config.memory_size/(1024*1024)); |
|
- | 182 | printf("config.cpu_count=%d\n", config.cpu_count); |
|
- | 183 | ||
- | 184 | cpu_init(); |
|
- | 185 | ||
- | 186 | calibrate_delay_loop(); |
|
- | 187 | ||
- | 188 | timeout_init(); |
|
- | 189 | scheduler_init(); |
|
- | 190 | task_init(); |
|
- | 191 | thread_init(); |
|
- | 192 | ||
- | 193 | /* |
|
- | 194 | * Create kernel vm mapping. |
|
- | 195 | */ |
|
- | 196 | m = vm_create(GET_PTL0_ADDRESS()); |
|
- | 197 | if (!m) |
|
- | 198 | panic("can't create kernel vm address space\n"); |
|
- | 199 | ||
- | 200 | /* |
|
- | 201 | * Create kernel task. |
|
- | 202 | */ |
|
- | 203 | k = task_create(m); |
|
- | 204 | if (!k) |
|
- | 205 | panic("can't create kernel task\n"); |
|
- | 206 | ||
- | 207 | /* |
|
- | 208 | * Create the first thread. |
|
- | 209 | */ |
|
- | 210 | t = thread_create(kinit, NULL, k, 0); |
|
- | 211 | if (!t) |
|
- | 212 | panic("can't create kinit thread\n"); |
|
- | 213 | thread_ready(t); |
|
- | 214 | /* |
|
- | 215 | * This call to scheduler() will return to kinit, |
|
- | 216 | * starting the thread of kernel threads. |
|
- | 217 | */ |
|
- | 218 | scheduler(); |
|
- | 219 | /* not reached */ |
|
- | 220 | } |
|
- | 221 | ||
- | 222 | ||
- | 223 | #ifdef CONFIG_SMP |
|
- | 224 | /** Application CPUs main kernel routine |
|
- | 225 | * |
|
- | 226 | * Executed by application processors, temporary stack |
|
- | 227 | * is at ctx.sp which was set during BP boot. |
|
- | 228 | * |
|
- | 229 | * Assuming interrupts_disable()'d. |
|
- | 230 | * |
|
- | 231 | */ |
|
- | 232 | void main_ap(void) |
|
- | 233 | { |
|
- | 234 | /* |
|
- | 235 | * Incrementing the active CPU counter will guarantee that the |
|
- | 236 | * pm_init() will not attempt to build GDT and IDT tables again. |
|
- | 237 | * Neither frame_init() will do the complete thing. Neither cpu_init() |
|
- | 238 | * will do. |
|
- | 239 | */ |
|
- | 240 | config.cpu_active++; |
|
- | 241 | ||
- | 242 | /* |
|
- | 243 | * The THE structure is well defined because ctx.sp is used as stack. |
|
- | 244 | */ |
|
- | 245 | the_initialize(THE); |
|
- | 246 | ||
- | 247 | arch_pre_mm_init(); |
|
- | 248 | frame_init(); |
|
- | 249 | page_init(); |
|
- | 250 | tlb_init(); |
|
- | 251 | arch_post_mm_init(); |
|
- | 252 | ||
- | 253 | cpu_init(); |
|
- | 254 | ||
- | 255 | calibrate_delay_loop(); |
|
- | 256 | ||
- | 257 | l_apic_init(); |
|
- | 258 | l_apic_debug(); |
|
- | 259 | ||
- | 260 | the_copy(THE, (the_t *) CPU->stack); |
|
- | 261 | ||
- | 262 | /* |
|
- | 263 | * If we woke kmp up before we left the kernel stack, we could |
|
- | 264 | * collide with another CPU coming up. To prevent this, we |
|
- | 265 | * switch to this cpu's private stack prior to waking kmp up. |
|
- | 266 | */ |
|
- | 267 | context_set(&CPU->saved_context, FADDR(main_ap_separated_stack), (__address) CPU->stack, CPU_STACK_SIZE); |
|
- | 268 | context_restore(&CPU->saved_context); |
|
- | 269 | /* not reached */ |
|
- | 270 | } |
|
- | 271 | ||
- | 272 | ||
- | 273 | /** Application CPUs main kernel routine stack wrapper |
|
- | 274 | * |
|
- | 275 | * Second part of main_ap(). |
|
- | 276 | * |
|
- | 277 | */ |
|
- | 278 | void main_ap_separated_stack(void) |
|
- | 279 | { |
|
- | 280 | /* |
|
- | 281 | * Configure timeouts for this cpu. |
|
- | 282 | */ |
|
- | 283 | timeout_init(); |
|
- | 284 | ||
- | 285 | waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST); |
|
- | 286 | scheduler(); |
|
- | 287 | /* not reached */ |
|
- | 288 | } |
|
- | 289 | #endif /* CONFIG_SMP */ |