ia64/xen-unstable

annotate xen/arch/x86/setup.c @ 4850:923dd9975981

bitkeeper revision 1.1389.17.1 (42823056RNtq4AlseRHL98DJV2uJgA)

Change the Xen command-line parameter syntax. 'noacpi' and
'ignorebiostables' are gone. 'dom0_mem' can optionally take a k/m/g
suffix to specify units (default units are still kilobytes).

Also added:
1. 'mem=xxx' to specify maximum physical RAM address (supports
k/m/g suffix)
2. acpi=xxx/acpi_skip_timer_override/noapic: These all have same
semantics as in Linux. They are *automatically* propagated to
the domain0 command line, as dom0 shares resposibility for
platform initialisation.

Signed-off-by: Keir Fraser <keir@xensource.com>
author kaf24@firebug.cl.cam.ac.uk
date Wed May 11 16:18:30 2005 +0000 (2005-05-11)
parents cd6c145a8f97
children 2c883d988a41
rev   line source
kaf24@1452 1
kaf24@1452 2 #include <xen/config.h>
kaf24@1452 3 #include <xen/init.h>
kaf24@1452 4 #include <xen/lib.h>
kaf24@1452 5 #include <xen/sched.h>
kaf24@1452 6 #include <xen/serial.h>
kaf24@1506 7 #include <xen/softirq.h>
kaf24@1452 8 #include <xen/acpi.h>
kaf24@3338 9 #include <xen/console.h>
iap10@4287 10 #include <xen/serial.h>
kaf24@3338 11 #include <xen/trace.h>
kaf24@3338 12 #include <xen/multiboot.h>
kaf24@1452 13 #include <asm/bitops.h>
kaf24@1452 14 #include <asm/smp.h>
kaf24@1452 15 #include <asm/processor.h>
kaf24@1452 16 #include <asm/mpspec.h>
kaf24@1452 17 #include <asm/apic.h>
kaf24@1452 18 #include <asm/desc.h>
kaf24@1452 19 #include <asm/domain_page.h>
kaf24@3338 20 #include <asm/shadow.h>
kaf24@3344 21 #include <asm/e820.h>
kaf24@3338 22
kaf24@3338 23 /*
kaf24@3338 24 * opt_xenheap_megabytes: Size of Xen heap in megabytes, excluding the
kaf24@3338 25 * pfn_info table and allocation bitmap.
kaf24@3338 26 */
kaf24@3338 27 static unsigned int opt_xenheap_megabytes = XENHEAP_DEFAULT_MB;
kaf24@3354 28 #if defined(__x86_64__)
kaf24@3338 29 integer_param("xenheap_megabytes", opt_xenheap_megabytes);
kaf24@3354 30 #endif
kaf24@1452 31
kaf24@3334 32 /* opt_noht: If true, Hyperthreading is ignored. */
kaf24@3334 33 int opt_noht = 0;
kaf24@3334 34 boolean_param("noht", opt_noht);
kaf24@3334 35
kaf24@3334 36 /* opt_watchdog: If true, run a watchdog NMI on each processor. */
kaf24@3334 37 static int opt_watchdog = 0;
kaf24@3334 38 boolean_param("watchdog", opt_watchdog);
kaf24@3334 39
kaf24@4850 40 /* **** Linux config option: propagated to domain0. */
kaf24@4850 41 /* "acpi=off": Sisables both ACPI table parsing and interpreter. */
kaf24@4850 42 /* "acpi=force": Override the disable blacklist. */
kaf24@4850 43 /* "acpi=strict": Disables out-of-spec workarounds. */
kaf24@4850 44 /* "acpi=ht": Limit ACPI just to boot-time to enable HT. */
kaf24@4850 45 /* "acpi=noirq": Disables ACPI interrupt routing. */
kaf24@4850 46 static void parse_acpi_param(char *s);
kaf24@4850 47 custom_param("acpi", parse_acpi_param);
kaf24@4850 48
kaf24@4850 49 /* **** Linux config option: propagated to domain0. */
kaf24@4850 50 /* acpi_skip_timer_override: Skip IRQ0 overrides. */
kaf24@4850 51 extern int acpi_skip_timer_override;
kaf24@4850 52 boolean_param("acpi_skip_timer_override", acpi_skip_timer_override);
kaf24@4850 53
kaf24@4850 54 /* **** Linux config option: propagated to domain0. */
kaf24@4850 55 /* noapic: Disable IOAPIC setup. */
kaf24@4850 56 extern int skip_ioapic_setup;
kaf24@4850 57 boolean_param("noapic", skip_ioapic_setup);
kaf24@4850 58
kaf24@3594 59 int early_boot = 1;
kaf24@3594 60
kaf24@3338 61 unsigned long xenheap_phys_end;
kaf24@3338 62
kaf24@2298 63 extern void arch_init_memory(void);
kaf24@1589 64 extern void init_IRQ(void);
kaf24@1589 65 extern void trap_init(void);
kaf24@1589 66 extern void time_init(void);
kaf24@1589 67 extern void ac_timer_init(void);
kaf24@1589 68 extern void initialize_keytable();
kaf24@1589 69 extern int do_timer_lists_from_pit;
kaf24@1589 70
kaf24@1480 71 struct cpuinfo_x86 boot_cpu_data = { 0, 0, 0, 0, -1 };
kaf24@1452 72
kaf24@1670 73 #if defined(__x86_64__)
kaf24@1670 74 unsigned long mmu_cr4_features = X86_CR4_PSE | X86_CR4_PGE | X86_CR4_PAE;
kaf24@1670 75 #else
kaf24@1452 76 unsigned long mmu_cr4_features = X86_CR4_PSE | X86_CR4_PGE;
kaf24@1670 77 #endif
kaf24@1452 78 EXPORT_SYMBOL(mmu_cr4_features);
kaf24@1452 79
kaf24@1452 80 unsigned long wait_init_idle;
kaf24@1452 81
cl349@2919 82 struct exec_domain *idle_task[NR_CPUS] = { &idle0_exec_domain };
kaf24@1452 83
kaf24@4818 84 int acpi_disabled;
kaf24@1452 85
kaf24@1452 86 int phys_proc_id[NR_CPUS];
kaf24@1452 87 int logical_proc_id[NR_CPUS];
kaf24@1452 88
kaf24@3623 89 /* Standard macro to see if a specific flag is changeable. */
kaf24@3623 90 static inline int flag_is_changeable_p(unsigned long flag)
kaf24@1452 91 {
kaf24@3623 92 unsigned long f1, f2;
kaf24@1452 93
kaf24@3623 94 asm("pushf\n\t"
kaf24@3623 95 "pushf\n\t"
kaf24@3623 96 "pop %0\n\t"
kaf24@3623 97 "mov %0,%1\n\t"
kaf24@3623 98 "xor %2,%0\n\t"
kaf24@3623 99 "push %0\n\t"
kaf24@3623 100 "popf\n\t"
kaf24@3623 101 "pushf\n\t"
kaf24@3623 102 "pop %0\n\t"
kaf24@3623 103 "popf\n\t"
kaf24@1452 104 : "=&r" (f1), "=&r" (f2)
kaf24@1452 105 : "ir" (flag));
kaf24@1452 106
kaf24@1452 107 return ((f1^f2) & flag) != 0;
kaf24@1452 108 }
kaf24@1452 109
kaf24@1452 110 /* Probe for the CPUID instruction */
kaf24@1452 111 static int __init have_cpuid_p(void)
kaf24@1452 112 {
kaf24@1452 113 return flag_is_changeable_p(X86_EFLAGS_ID);
kaf24@1452 114 }
kaf24@1452 115
kaf24@1452 116 void __init get_cpu_vendor(struct cpuinfo_x86 *c)
kaf24@1452 117 {
kaf24@1452 118 char *v = c->x86_vendor_id;
kaf24@1452 119
kaf24@1452 120 if (!strcmp(v, "GenuineIntel"))
kaf24@1452 121 c->x86_vendor = X86_VENDOR_INTEL;
kaf24@1452 122 else if (!strcmp(v, "AuthenticAMD"))
kaf24@1452 123 c->x86_vendor = X86_VENDOR_AMD;
kaf24@1452 124 else if (!strcmp(v, "CyrixInstead"))
kaf24@1452 125 c->x86_vendor = X86_VENDOR_CYRIX;
kaf24@1452 126 else if (!strcmp(v, "UMC UMC UMC "))
kaf24@1452 127 c->x86_vendor = X86_VENDOR_UMC;
kaf24@1452 128 else if (!strcmp(v, "CentaurHauls"))
kaf24@1452 129 c->x86_vendor = X86_VENDOR_CENTAUR;
kaf24@1452 130 else if (!strcmp(v, "NexGenDriven"))
kaf24@1452 131 c->x86_vendor = X86_VENDOR_NEXGEN;
kaf24@1452 132 else if (!strcmp(v, "RiseRiseRise"))
kaf24@1452 133 c->x86_vendor = X86_VENDOR_RISE;
kaf24@1452 134 else if (!strcmp(v, "GenuineTMx86") ||
kaf24@1452 135 !strcmp(v, "TransmetaCPU"))
kaf24@1452 136 c->x86_vendor = X86_VENDOR_TRANSMETA;
kaf24@1452 137 else
kaf24@1452 138 c->x86_vendor = X86_VENDOR_UNKNOWN;
kaf24@1452 139 }
kaf24@1452 140
kaf24@1452 141 static void __init init_intel(struct cpuinfo_x86 *c)
kaf24@1452 142 {
kaf24@1452 143 /* SEP CPUID bug: Pentium Pro reports SEP but doesn't have it */
kaf24@1452 144 if ( c->x86 == 6 && c->x86_model < 3 && c->x86_mask < 3 )
kaf24@1452 145 clear_bit(X86_FEATURE_SEP, &c->x86_capability);
kaf24@1452 146
kaf24@1452 147 #ifdef CONFIG_SMP
kaf24@1452 148 if ( test_bit(X86_FEATURE_HT, &c->x86_capability) )
kaf24@1452 149 {
kaf24@1452 150 u32 eax, ebx, ecx, edx;
kaf24@1452 151 int initial_apic_id, siblings, cpu = smp_processor_id();
kaf24@1452 152
kaf24@1452 153 cpuid(1, &eax, &ebx, &ecx, &edx);
cl349@2703 154 ht_per_core = siblings = (ebx & 0xff0000) >> 16;
cl349@2703 155
cl349@2703 156 if ( opt_noht )
cl349@2703 157 clear_bit(X86_FEATURE_HT, &c->x86_capability[0]);
cl349@2703 158
kaf24@1452 159 if ( siblings <= 1 )
kaf24@1452 160 {
kaf24@1452 161 printk(KERN_INFO "CPU#%d: Hyper-Threading is disabled\n", cpu);
kaf24@1452 162 }
kaf24@1452 163 else if ( siblings > 2 )
kaf24@1452 164 {
kaf24@1452 165 panic("We don't support more than two logical CPUs per package!");
kaf24@1452 166 }
kaf24@1452 167 else
kaf24@1452 168 {
kaf24@1452 169 initial_apic_id = ebx >> 24 & 0xff;
kaf24@1452 170 phys_proc_id[cpu] = initial_apic_id >> 1;
kaf24@1452 171 logical_proc_id[cpu] = initial_apic_id & 1;
kaf24@1452 172 printk(KERN_INFO "CPU#%d: Physical ID: %d, Logical ID: %d\n",
kaf24@1452 173 cpu, phys_proc_id[cpu], logical_proc_id[cpu]);
kaf24@1452 174 }
kaf24@1452 175 }
kaf24@1452 176 #endif
iap10@3290 177
iap10@3290 178 #ifdef CONFIG_VMX
iap10@3290 179 start_vmx();
iap10@3290 180 #endif
iap10@3290 181
kaf24@1452 182 }
kaf24@1452 183
kaf24@1452 184 static void __init init_amd(struct cpuinfo_x86 *c)
kaf24@1452 185 {
kaf24@1452 186 /* Bit 31 in normal CPUID used for nonstandard 3DNow ID;
kaf24@1452 187 3DNow is IDd by bit 31 in extended CPUID (1*32+31) anyway */
kaf24@1452 188 clear_bit(0*32+31, &c->x86_capability);
kaf24@1452 189
kaf24@1452 190 switch(c->x86)
kaf24@1452 191 {
kaf24@1452 192 case 5:
kaf24@1452 193 panic("AMD K6 is not supported.\n");
kaf24@1452 194 case 6: /* An Athlon/Duron. We can trust the BIOS probably */
kaf24@1452 195 break;
kaf24@1452 196 }
kaf24@1452 197 }
kaf24@1452 198
kaf24@1452 199 /*
kaf24@1452 200 * This does the hard work of actually picking apart the CPU stuff...
kaf24@1452 201 */
kaf24@1452 202 void __init identify_cpu(struct cpuinfo_x86 *c)
kaf24@1452 203 {
riel@3992 204 int i, cpu = smp_processor_id();
riel@3992 205 u32 xlvl, tfms, junk;
kaf24@1452 206
kaf24@1452 207 phys_proc_id[cpu] = cpu;
kaf24@1452 208 logical_proc_id[cpu] = 0;
kaf24@1452 209
kaf24@1452 210 c->x86_vendor = X86_VENDOR_UNKNOWN;
kaf24@1452 211 c->cpuid_level = -1; /* CPUID not detected */
kaf24@1452 212 c->x86_model = c->x86_mask = 0; /* So far unknown... */
kaf24@1452 213 c->x86_vendor_id[0] = '\0'; /* Unset */
kaf24@1452 214 memset(&c->x86_capability, 0, sizeof c->x86_capability);
kaf24@1452 215
kaf24@1452 216 if ( !have_cpuid_p() )
kaf24@1452 217 panic("Ancient processors not supported\n");
kaf24@1452 218
kaf24@1452 219 /* Get vendor name */
riel@3992 220 cpuid(0x00000000, (unsigned int *)&c->cpuid_level,
riel@3992 221 (unsigned int *)&c->x86_vendor_id[0],
riel@3992 222 (unsigned int *)&c->x86_vendor_id[8],
riel@3992 223 (unsigned int *)&c->x86_vendor_id[4]);
kaf24@1452 224
kaf24@1452 225 get_cpu_vendor(c);
kaf24@1452 226
kaf24@1452 227 if ( c->cpuid_level == 0 )
kaf24@1452 228 panic("Decrepit CPUID not supported\n");
kaf24@1452 229
kaf24@1452 230 cpuid(0x00000001, &tfms, &junk, &junk,
kaf24@1452 231 &c->x86_capability[0]);
kaf24@1452 232 c->x86 = (tfms >> 8) & 15;
kaf24@1452 233 c->x86_model = (tfms >> 4) & 15;
kaf24@1452 234 c->x86_mask = tfms & 15;
kaf24@1452 235
kaf24@1452 236 /* AMD-defined flags: level 0x80000001 */
kaf24@1452 237 xlvl = cpuid_eax(0x80000000);
kaf24@1452 238 if ( (xlvl & 0xffff0000) == 0x80000000 ) {
kaf24@1452 239 if ( xlvl >= 0x80000001 )
kaf24@1452 240 c->x86_capability[1] = cpuid_edx(0x80000001);
kaf24@1452 241 }
kaf24@1452 242
kaf24@1452 243 /* Transmeta-defined flags: level 0x80860001 */
kaf24@1452 244 xlvl = cpuid_eax(0x80860000);
kaf24@1452 245 if ( (xlvl & 0xffff0000) == 0x80860000 ) {
kaf24@1452 246 if ( xlvl >= 0x80860001 )
kaf24@1452 247 c->x86_capability[2] = cpuid_edx(0x80860001);
kaf24@1452 248 }
kaf24@1452 249
kaf24@1452 250 printk("CPU%d: Before vendor init, caps: %08x %08x %08x, vendor = %d\n",
kaf24@1452 251 smp_processor_id(),
kaf24@1452 252 c->x86_capability[0],
kaf24@1452 253 c->x86_capability[1],
kaf24@1452 254 c->x86_capability[2],
kaf24@1452 255 c->x86_vendor);
kaf24@1452 256
kaf24@1452 257 switch ( c->x86_vendor ) {
kaf24@1452 258 case X86_VENDOR_INTEL:
kaf24@1452 259 init_intel(c);
kaf24@1452 260 break;
kaf24@1452 261 case X86_VENDOR_AMD:
kaf24@1452 262 init_amd(c);
kaf24@1452 263 break;
kaf24@1452 264 case X86_VENDOR_UNKNOWN: /* Connectix Virtual PC reports this */
kaf24@1452 265 break;
kaf24@1452 266 case X86_VENDOR_CENTAUR:
kaf24@1452 267 break;
kaf24@1452 268 default:
kaf24@1452 269 printk("Unknown CPU identifier (%d): continuing anyway, "
kaf24@1452 270 "but might fail.\n", c->x86_vendor);
kaf24@1452 271 }
kaf24@1452 272
kaf24@1452 273 printk("CPU caps: %08x %08x %08x %08x\n",
kaf24@1452 274 c->x86_capability[0],
kaf24@1452 275 c->x86_capability[1],
kaf24@1452 276 c->x86_capability[2],
kaf24@1452 277 c->x86_capability[3]);
kaf24@1452 278
kaf24@1452 279 /*
kaf24@1452 280 * On SMP, boot_cpu_data holds the common feature set between
kaf24@1452 281 * all CPUs; so make sure that we indicate which features are
kaf24@1452 282 * common between the CPUs. The first time this routine gets
kaf24@1452 283 * executed, c == &boot_cpu_data.
kaf24@1452 284 */
kaf24@1452 285 if ( c != &boot_cpu_data ) {
kaf24@1452 286 /* AND the already accumulated flags with these */
kaf24@1452 287 for ( i = 0 ; i < NCAPINTS ; i++ )
kaf24@1452 288 boot_cpu_data.x86_capability[i] &= c->x86_capability[i];
kaf24@1452 289 }
kaf24@1452 290 }
kaf24@1452 291
kaf24@1452 292
kaf24@1452 293 unsigned long cpu_initialized;
kaf24@1452 294 void __init cpu_init(void)
kaf24@1452 295 {
kaf24@1452 296 int nr = smp_processor_id();
kaf24@3623 297 struct tss_struct *t = &init_tss[nr];
kaf24@1452 298
kaf24@1452 299 if ( test_and_set_bit(nr, &cpu_initialized) )
kaf24@1452 300 panic("CPU#%d already initialized!!!\n", nr);
kaf24@1452 301 printk("Initializing CPU#%d\n", nr);
kaf24@1452 302
kaf24@1452 303 SET_GDT_ENTRIES(current, DEFAULT_GDT_ENTRIES);
kaf24@1452 304 SET_GDT_ADDRESS(current, DEFAULT_GDT_ADDRESS);
kaf24@3677 305 __asm__ __volatile__ ( "lgdt %0" : "=m" (*current->arch.gdt) );
kaf24@1452 306
kaf24@1452 307 /* No nested task. */
kaf24@3623 308 __asm__ __volatile__ ( "pushf ; andw $0xbfff,(%"__OP"sp) ; popf" );
kaf24@1452 309
kaf24@1452 310 /* Ensure FPU gets initialised for each domain. */
kaf24@1452 311 stts();
kaf24@1452 312
kaf24@1452 313 /* Set up and load the per-CPU TSS and LDT. */
kaf24@3623 314 t->bitmap = IOBMP_INVALID_OFFSET;
kaf24@3623 315 #if defined(__i386__)
kaf24@1452 316 t->ss0 = __HYPERVISOR_DS;
kaf24@3761 317 t->esp0 = get_stack_bottom();
kaf24@3623 318 #elif defined(__x86_64__)
kaf24@3761 319 t->rsp0 = get_stack_bottom();
kaf24@3623 320 #endif
kaf24@1452 321 set_tss_desc(nr,t);
kaf24@1452 322 load_TR(nr);
kaf24@3623 323 __asm__ __volatile__ ( "lldt %%ax" : : "a" (0) );
kaf24@1452 324
kaf24@1452 325 /* Clear all 6 debug registers. */
kaf24@3623 326 #define CD(register) __asm__ ( "mov %0,%%db" #register : : "r" (0UL) );
kaf24@1452 327 CD(0); CD(1); CD(2); CD(3); /* no db4 and db5 */; CD(6); CD(7);
kaf24@1452 328 #undef CD
kaf24@1452 329
kaf24@1452 330 /* Install correct page table. */
kaf24@3677 331 write_ptbase(current);
kaf24@1452 332
kaf24@1452 333 init_idle_task();
kaf24@1452 334 }
kaf24@1452 335
kaf24@4850 336 int acpi_force;
kaf24@4850 337 char acpi_param[10] = "";
kaf24@4850 338 static void parse_acpi_param(char *s)
kaf24@4850 339 {
kaf24@4850 340 /* Save the parameter so it can be propagated to domain0. */
kaf24@4850 341 strncpy(acpi_param, s, sizeof(acpi_param));
kaf24@4850 342 acpi_param[sizeof(acpi_param)-1] = '\0';
kaf24@4850 343
kaf24@4850 344 /* Interpret the parameter for use within Xen. */
kaf24@4850 345 if ( !strcmp(s, "off") )
kaf24@4850 346 {
kaf24@4850 347 disable_acpi();
kaf24@4850 348 }
kaf24@4850 349 else if ( !strcmp(s, "force") )
kaf24@4850 350 {
kaf24@4850 351 acpi_force = 1;
kaf24@4850 352 acpi_ht = 1;
kaf24@4850 353 acpi_disabled = 0;
kaf24@4850 354 }
kaf24@4850 355 else if ( !strcmp(s, "strict") )
kaf24@4850 356 {
kaf24@4850 357 acpi_strict = 1;
kaf24@4850 358 }
kaf24@4850 359 else if ( !strcmp(s, "ht") )
kaf24@4850 360 {
kaf24@4850 361 if ( !acpi_force )
kaf24@4850 362 disable_acpi();
kaf24@4850 363 acpi_ht = 1;
kaf24@4850 364 }
kaf24@4850 365 else if ( !strcmp(s, "noirq") )
kaf24@4850 366 {
kaf24@4850 367 acpi_noirq_set();
kaf24@4850 368 }
kaf24@4850 369 }
kaf24@4850 370
kaf24@1452 371 static void __init do_initcalls(void)
kaf24@1452 372 {
kaf24@1452 373 initcall_t *call;
kaf24@1452 374 for ( call = &__initcall_start; call < &__initcall_end; call++ )
kaf24@1452 375 (*call)();
kaf24@1452 376 }
kaf24@1452 377
kaf24@3338 378 static void __init start_of_day(void)
kaf24@1452 379 {
kaf24@1452 380 #ifdef MEMORY_GUARD
kaf24@1452 381 /* Unmap the first page of CPU0's stack. */
kaf24@1452 382 extern unsigned long cpu0_stack[];
kaf24@3686 383 memguard_guard_stack(cpu0_stack);
kaf24@1452 384 #endif
kaf24@1452 385
kaf24@1505 386 open_softirq(NEW_TLBFLUSH_CLOCK_PERIOD_SOFTIRQ, new_tlbflush_clock_period);
kaf24@1452 387
kaf24@1452 388 if ( opt_watchdog )
kaf24@1452 389 nmi_watchdog = NMI_LOCAL_APIC;
kaf24@1452 390
kaf24@3120 391 sort_exception_tables();
kaf24@3120 392
kaf24@3272 393 arch_do_createdomain(current);
kaf24@3272 394
kaf24@1452 395 identify_cpu(&boot_cpu_data); /* get CPU type info */
kaf24@1452 396 if ( cpu_has_fxsr ) set_in_cr4(X86_CR4_OSFXSR);
kaf24@1452 397 if ( cpu_has_xmm ) set_in_cr4(X86_CR4_OSXMMEXCPT);
kaf24@4850 398
kaf24@4850 399 find_smp_config();
kaf24@4850 400
kaf24@4850 401 smp_alloc_memory();
kaf24@4850 402
kaf24@4850 403 paging_init();
kaf24@4850 404
kaf24@4850 405 acpi_boot_table_init();
kaf24@4850 406 acpi_boot_init();
kaf24@4850 407
kaf24@1452 408 if ( smp_found_config )
kaf24@1452 409 get_smp_config();
kaf24@4850 410
kaf24@4850 411 init_apic_mappings();
kaf24@4850 412
kaf24@1452 413 scheduler_init();
kaf24@4850 414
kaf24@4850 415 init_IRQ();
kaf24@4850 416
kaf24@1452 417 trap_init();
kaf24@4850 418
kaf24@4850 419 time_init();
kaf24@1452 420
kaf24@2298 421 arch_init_memory();
kaf24@2298 422
kaf24@4850 423 smp_boot_cpus();
kaf24@1452 424
kaf24@1452 425 __sti();
kaf24@1452 426
kaf24@4850 427 initialize_keytable();
kaf24@1452 428
kaf24@1452 429 serial_init_stage2();
kaf24@1452 430
kaf24@1452 431 if ( !cpu_has_apic )
kaf24@1452 432 {
kaf24@1452 433 do_timer_lists_from_pit = 1;
kaf24@1452 434 if ( smp_num_cpus != 1 )
kaf24@1452 435 panic("We need local APICs on SMP machines!");
kaf24@1452 436 }
kaf24@1452 437
kaf24@1452 438 ac_timer_init(); /* init accurate timers */
kaf24@1452 439 init_xen_time(); /* initialise the time */
kaf24@1452 440 schedulers_start(); /* start scheduler for each CPU */
kaf24@1452 441
kaf24@1452 442 check_nmi_watchdog();
kaf24@1452 443
kaf24@1452 444 do_initcalls();
kaf24@1452 445
kaf24@1452 446 wait_init_idle = cpu_online_map;
kaf24@1452 447 clear_bit(smp_processor_id(), &wait_init_idle);
kaf24@1452 448 smp_threads_ready = 1;
kaf24@1452 449 smp_commence(); /* Tell other CPUs that state of the world is stable. */
kaf24@2344 450 while ( wait_init_idle != 0 )
kaf24@1452 451 cpu_relax();
kaf24@1452 452
kaf24@1452 453 watchdog_on = 1;
kaf24@3630 454 #ifdef __x86_64__ /* x86_32 uses low mappings when building DOM0. */
kaf24@3630 455 zap_low_mappings();
kaf24@3630 456 #endif
kaf24@1452 457 }
kaf24@3338 458
kaf24@3338 459 void __init __start_xen(multiboot_info_t *mbi)
kaf24@3338 460 {
riel@3992 461 char *cmdline;
kaf24@3338 462 module_t *mod = (module_t *)__va(mbi->mods_addr);
kaf24@3338 463 void *heap_start;
kaf24@3354 464 unsigned long firsthole_start, nr_pages;
kaf24@3338 465 unsigned long initial_images_start, initial_images_end;
kaf24@3344 466 struct e820entry e820_raw[E820MAX];
kaf24@3354 467 int i, e820_raw_nr = 0, bytes = 0;
kaf24@3338 468
kaf24@3338 469 /* Parse the command-line options. */
kaf24@3344 470 if ( (mbi->flags & MBI_CMDLINE) && (mbi->cmdline != 0) )
kaf24@3344 471 cmdline_parse(__va(mbi->cmdline));
kaf24@3338 472
kaf24@3338 473 /* Must do this early -- e.g., spinlocks rely on get_current(). */
kaf24@3340 474 set_current(&idle0_exec_domain);
kaf24@3338 475
kaf24@3338 476 /* We initialise the serial devices very early so we can get debugging. */
kaf24@3338 477 serial_init_stage1();
kaf24@3338 478
kaf24@3338 479 init_console();
kaf24@3338 480
kaf24@3344 481 /* Check that we have at least one Multiboot module. */
kaf24@3344 482 if ( !(mbi->flags & MBI_MODULES) || (mbi->mods_count == 0) )
kaf24@3338 483 {
kaf24@3344 484 printk("FATAL ERROR: Require at least one Multiboot module.\n");
kaf24@3338 485 for ( ; ; ) ;
kaf24@3338 486 }
kaf24@3338 487
kaf24@3338 488 xenheap_phys_end = opt_xenheap_megabytes << 20;
kaf24@3338 489
kaf24@3344 490 if ( mbi->flags & MBI_MEMMAP )
kaf24@3344 491 {
kaf24@3344 492 while ( bytes < mbi->mmap_length )
kaf24@3344 493 {
kaf24@3344 494 memory_map_t *map = __va(mbi->mmap_addr + bytes);
kaf24@3344 495 e820_raw[e820_raw_nr].addr =
kaf24@3344 496 ((u64)map->base_addr_high << 32) | (u64)map->base_addr_low;
kaf24@3344 497 e820_raw[e820_raw_nr].size =
kaf24@3344 498 ((u64)map->length_high << 32) | (u64)map->length_low;
kaf24@3344 499 e820_raw[e820_raw_nr].type =
kaf24@3346 500 (map->type > E820_SHARED_PAGE) ? E820_RESERVED : map->type;
kaf24@3344 501 e820_raw_nr++;
kaf24@3344 502 bytes += map->size + 4;
kaf24@3344 503 }
kaf24@3344 504 }
kaf24@3344 505 else if ( mbi->flags & MBI_MEMLIMITS )
kaf24@3344 506 {
kaf24@3344 507 e820_raw[0].addr = 0;
kaf24@3344 508 e820_raw[0].size = mbi->mem_lower << 10;
kaf24@3344 509 e820_raw[0].type = E820_RAM;
kaf24@3354 510 e820_raw[1].addr = 0x100000;
kaf24@3354 511 e820_raw[1].size = mbi->mem_upper << 10;
kaf24@3354 512 e820_raw[1].type = E820_RAM;
kaf24@3344 513 e820_raw_nr = 2;
kaf24@3344 514 }
kaf24@3344 515 else
kaf24@3344 516 {
kaf24@3344 517 printk("FATAL ERROR: Bootloader provided no memory information.\n");
kaf24@3344 518 for ( ; ; ) ;
kaf24@3344 519 }
kaf24@3344 520
kaf24@3354 521 max_page = init_e820(e820_raw, e820_raw_nr);
kaf24@3338 522
kaf24@3354 523 /* Find the first high-memory RAM hole. */
kaf24@3354 524 for ( i = 0; i < e820.nr_map; i++ )
kaf24@3354 525 if ( (e820.map[i].type == E820_RAM) &&
kaf24@3354 526 (e820.map[i].addr >= 0x100000) )
kaf24@3354 527 break;
kaf24@3354 528 firsthole_start = e820.map[i].addr + e820.map[i].size;
kaf24@3338 529
kaf24@3354 530 /* Relocate the Multiboot modules. */
kaf24@3354 531 initial_images_start = xenheap_phys_end;
kaf24@3338 532 initial_images_end = initial_images_start +
kaf24@3338 533 (mod[mbi->mods_count-1].mod_end - mod[0].mod_start);
kaf24@3354 534 if ( initial_images_end > firsthole_start )
kaf24@3338 535 {
kaf24@3338 536 printk("Not enough memory to stash the DOM0 kernel image.\n");
kaf24@3338 537 for ( ; ; ) ;
kaf24@3338 538 }
kaf24@3354 539 #if defined(__i386__)
kaf24@3338 540 memmove((void *)initial_images_start, /* use low mapping */
kaf24@3338 541 (void *)mod[0].mod_start, /* use low mapping */
kaf24@3338 542 mod[mbi->mods_count-1].mod_end - mod[0].mod_start);
kaf24@3338 543 #elif defined(__x86_64__)
kaf24@3338 544 memmove(__va(initial_images_start),
kaf24@3338 545 __va(mod[0].mod_start),
kaf24@3338 546 mod[mbi->mods_count-1].mod_end - mod[0].mod_start);
kaf24@3338 547 #endif
kaf24@3338 548
kaf24@3354 549 /* Initialise boot-time allocator with all RAM situated after modules. */
kaf24@3354 550 heap_start = memguard_init(&_end);
kaf24@3354 551 heap_start = __va(init_boot_allocator(__pa(heap_start)));
kaf24@3354 552 nr_pages = 0;
kaf24@3354 553 for ( i = 0; i < e820.nr_map; i++ )
kaf24@3354 554 {
kaf24@3354 555 if ( e820.map[i].type != E820_RAM )
kaf24@3354 556 continue;
kaf24@3354 557 nr_pages += e820.map[i].size >> PAGE_SHIFT;
kaf24@3354 558 if ( (e820.map[i].addr + e820.map[i].size) >= initial_images_end )
kaf24@3354 559 init_boot_pages((e820.map[i].addr < initial_images_end) ?
kaf24@3354 560 initial_images_end : e820.map[i].addr,
kaf24@3354 561 e820.map[i].addr + e820.map[i].size);
kaf24@3354 562 }
kaf24@3354 563
kaf24@3354 564 printk("System RAM: %luMB (%lukB)\n",
kaf24@3354 565 nr_pages >> (20 - PAGE_SHIFT),
kaf24@3354 566 nr_pages << (PAGE_SHIFT - 10));
kaf24@3354 567
kaf24@3354 568 init_frametable();
kaf24@3338 569
kaf24@3354 570 end_boot_allocator();
kaf24@3354 571
kaf24@3338 572 init_xenheap_pages(__pa(heap_start), xenheap_phys_end);
kaf24@3354 573 printk("Xen heap: %luMB (%lukB)\n",
kaf24@3354 574 (xenheap_phys_end-__pa(heap_start)) >> 20,
kaf24@3354 575 (xenheap_phys_end-__pa(heap_start)) >> 10);
kaf24@3338 576
kaf24@3594 577 early_boot = 0;
kaf24@3338 578
kaf24@3338 579 start_of_day();
kaf24@3338 580
kaf24@3338 581 grant_table_init();
kaf24@3338 582
kaf24@3338 583 shadow_mode_init();
kaf24@3338 584
kaf24@3338 585 /* Create initial domain 0. */
kaf24@3338 586 dom0 = do_createdomain(0, 0);
kaf24@3338 587 if ( dom0 == NULL )
kaf24@3338 588 panic("Error creating domain 0\n");
kaf24@3338 589
kaf24@4798 590 set_bit(DF_PRIVILEGED, &dom0->flags);
kaf24@3338 591
kaf24@4850 592 /* Grab the DOM0 command line. */
riel@3992 593 cmdline = (char *)(mod[0].string ? __va(mod[0].string) : NULL);
kaf24@3338 594 if ( cmdline != NULL )
kaf24@3338 595 {
kaf24@4850 596 static char dom0_cmdline[256];
kaf24@4850 597
kaf24@4850 598 /* Skip past the image name. */
kaf24@3338 599 while ( *cmdline == ' ' ) cmdline++;
kaf24@3338 600 if ( (cmdline = strchr(cmdline, ' ')) != NULL )
kaf24@3338 601 while ( *cmdline == ' ' ) cmdline++;
kaf24@4850 602
kaf24@4850 603 /* Copy the command line to a local buffer. */
kaf24@4850 604 strcpy(dom0_cmdline, cmdline);
kaf24@4850 605 cmdline = dom0_cmdline;
kaf24@4850 606
kaf24@4850 607 /* Append any extra parameters. */
kaf24@4850 608 if ( skip_ioapic_setup && !strstr(cmdline, "noapic") )
kaf24@4850 609 strcat(cmdline, " noapic");
kaf24@4850 610 if ( acpi_skip_timer_override &&
kaf24@4850 611 !strstr(cmdline, "acpi_skip_timer_override") )
kaf24@4850 612 strcat(cmdline, " acpi_skip_timer_override");
kaf24@4850 613 if ( (strlen(acpi_param) != 0) && !strstr(cmdline, "acpi=") )
kaf24@4850 614 {
kaf24@4850 615 strcat(cmdline, " acpi=");
kaf24@4850 616 strcat(cmdline, acpi_param);
kaf24@4850 617 }
kaf24@3338 618 }
kaf24@3338 619
kaf24@3338 620 /*
kaf24@3338 621 * We're going to setup domain0 using the module(s) that we stashed safely
kaf24@3338 622 * above our heap. The second module, if present, is an initrd ramdisk.
kaf24@3338 623 */
kaf24@3935 624 if ( construct_dom0(dom0,
kaf24@3635 625 initial_images_start,
kaf24@3338 626 mod[0].mod_end-mod[0].mod_start,
kaf24@3338 627 (mbi->mods_count == 1) ? 0 :
kaf24@3635 628 initial_images_start +
kaf24@3338 629 (mod[1].mod_start-mod[0].mod_start),
kaf24@3338 630 (mbi->mods_count == 1) ? 0 :
kaf24@3338 631 mod[mbi->mods_count-1].mod_end - mod[1].mod_start,
kaf24@3338 632 cmdline) != 0)
kaf24@3338 633 panic("Could not set up DOM0 guest OS\n");
kaf24@3338 634
kaf24@3935 635 /* Scrub RAM that is still free and so may go to an unprivileged domain. */
kaf24@3338 636 scrub_heap_pages();
kaf24@3338 637
kaf24@3338 638 init_trace_bufs();
kaf24@3338 639
kaf24@3338 640 /* Give up the VGA console if DOM0 is configured to grab it. */
kaf24@3338 641 console_endboot(cmdline && strstr(cmdline, "tty0"));
kaf24@3338 642
iap10@4287 643 /* Hide UART from DOM0 if we're using it */
iap10@4287 644 serial_endboot();
iap10@4287 645
kaf24@3340 646 domain_unpause_by_systemcontroller(current->domain);
kaf24@3338 647 domain_unpause_by_systemcontroller(dom0);
kaf24@3338 648 startup_cpu_idle_loop();
kaf24@3338 649 }
kaf24@3914 650
kaf24@3914 651 /*
kaf24@3914 652 * Local variables:
kaf24@3914 653 * mode: C
kaf24@3914 654 * c-set-style: "BSD"
kaf24@3914 655 * c-basic-offset: 4
kaf24@3914 656 * tab-width: 4
kaf24@3914 657 * indent-tabs-mode: nil
kaf24@3988 658 * End:
kaf24@3914 659 */