ia64/xen-unstable

annotate xen/arch/x86/setup.c @ 19577:7809e0941b38

x86 vtd: Do not exclude freed percpu areas from dom0 vtd tables.

Signed-off-by: Qing He <qing.he@intel.com>
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
author Keir Fraser <keir.fraser@citrix.com>
date Sat Apr 25 08:19:14 2009 +0100 (2009-04-25)
parents 4dd8ed253ee0
children f210a633571c
rev   line source
kaf24@1452 1 #include <xen/config.h>
kaf24@1452 2 #include <xen/init.h>
kaf24@1452 3 #include <xen/lib.h>
kaf24@1452 4 #include <xen/sched.h>
cl349@5247 5 #include <xen/domain.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@5356 13 #include <xen/domain_page.h>
kfraser@10890 14 #include <xen/version.h>
kaf24@9117 15 #include <xen/gdbstub.h>
kaf24@9818 16 #include <xen/percpu.h>
kfraser@11296 17 #include <xen/hypercall.h>
kfraser@11601 18 #include <xen/keyhandler.h>
kfraser@11971 19 #include <xen/numa.h>
kaf24@13662 20 #include <xen/rcupdate.h>
keir@15298 21 #include <xen/vga.h>
keir@15988 22 #include <xen/dmi.h>
iap10@6721 23 #include <public/version.h>
ack@13291 24 #ifdef CONFIG_COMPAT
ack@13291 25 #include <compat/platform.h>
ack@13291 26 #include <compat/xen.h>
ack@13291 27 #endif
kaf24@1452 28 #include <asm/bitops.h>
kaf24@1452 29 #include <asm/smp.h>
kaf24@1452 30 #include <asm/processor.h>
kaf24@1452 31 #include <asm/mpspec.h>
kaf24@1452 32 #include <asm/apic.h>
kaf24@1452 33 #include <asm/desc.h>
Tim@13909 34 #include <asm/paging.h>
kaf24@3344 35 #include <asm/e820.h>
kfraser@15819 36 #include <xsm/acm/acm_hooks.h>
ian@12677 37 #include <xen/kexec.h>
kfraser@15336 38 #include <asm/edd.h>
kfraser@15815 39 #include <xsm/xsm.h>
keir@16274 40 #include <asm/tboot.h>
kaf24@3338 41
keir@19076 42 int __init bzimage_headroom(char *image_start, unsigned long image_length);
keir@19076 43
kfraser@15074 44 #if defined(CONFIG_X86_64)
kfraser@15597 45 #define BOOTSTRAP_DIRECTMAP_END (1UL << 32) /* 4GB */
kfraser@15074 46 #define maddr_to_bootstrap_virt(m) maddr_to_virt(m)
kfraser@15074 47 #else
kfraser@15597 48 #define BOOTSTRAP_DIRECTMAP_END (1UL << 30) /* 1GB */
kfraser@15074 49 #define maddr_to_bootstrap_virt(m) ((void *)(long)(m))
kfraser@15074 50 #endif
kfraser@15074 51
kaf24@5211 52 extern void generic_apic_probe(void);
kfraser@11971 53 extern void numa_initmem_init(unsigned long start_pfn, unsigned long end_pfn);
kaf24@5157 54
kfraser@15330 55 extern u16 boot_edid_caps;
kfraser@15330 56 extern u8 boot_edid_info[128];
kfraser@15330 57 extern struct boot_video_info boot_vid_info;
kfraser@15330 58
kaf24@5146 59 /* opt_nosmp: If true, secondary processors are ignored. */
kaf24@5900 60 static int opt_nosmp = 0;
kaf24@5146 61 boolean_param("nosmp", opt_nosmp);
kaf24@5146 62
kaf24@5146 63 /* maxcpus: maximum number of CPUs to activate. */
kaf24@5146 64 static unsigned int max_cpus = NR_CPUS;
shand@11156 65 integer_param("maxcpus", max_cpus);
kaf24@5146 66
kaf24@3334 67 /* opt_watchdog: If true, run a watchdog NMI on each processor. */
kaf24@3334 68 static int opt_watchdog = 0;
kaf24@3334 69 boolean_param("watchdog", opt_watchdog);
kaf24@3334 70
kaf24@4850 71 /* **** Linux config option: propagated to domain0. */
kaf24@4850 72 /* "acpi=off": Sisables both ACPI table parsing and interpreter. */
kaf24@4850 73 /* "acpi=force": Override the disable blacklist. */
kaf24@4850 74 /* "acpi=strict": Disables out-of-spec workarounds. */
kaf24@4850 75 /* "acpi=ht": Limit ACPI just to boot-time to enable HT. */
kaf24@4850 76 /* "acpi=noirq": Disables ACPI interrupt routing. */
kaf24@4850 77 static void parse_acpi_param(char *s);
kaf24@4850 78 custom_param("acpi", parse_acpi_param);
kaf24@4850 79
kaf24@4850 80 /* **** Linux config option: propagated to domain0. */
kaf24@4850 81 /* acpi_skip_timer_override: Skip IRQ0 overrides. */
kaf24@4850 82 extern int acpi_skip_timer_override;
kaf24@4850 83 boolean_param("acpi_skip_timer_override", acpi_skip_timer_override);
kaf24@4850 84
kaf24@4850 85 /* **** Linux config option: propagated to domain0. */
kaf24@4850 86 /* noapic: Disable IOAPIC setup. */
kaf24@4850 87 extern int skip_ioapic_setup;
kaf24@4850 88 boolean_param("noapic", skip_ioapic_setup);
kaf24@4850 89
keir@17546 90 /* **** Linux config option: propagated to domain0. */
keir@17657 91 /* xen_cpuidle: xen control cstate. */
keir@19545 92 /*static*/ int xen_cpuidle = -1;
keir@17657 93 boolean_param("cpuidle", xen_cpuidle);
keir@17546 94
kaf24@3594 95 int early_boot = 1;
kaf24@3594 96
kaf24@5146 97 cpumask_t cpu_present_map;
kaf24@5146 98
kfraser@15074 99 unsigned long xen_phys_start;
keir@19266 100 unsigned long allocator_bitmap_end;
kfraser@15074 101
keir@19055 102 #ifdef CONFIG_X86_32
kaf24@5003 103 /* Limits of Xen heap, used to initialise the allocator. */
keir@19061 104 unsigned long xenheap_initial_phys_start, xenheap_phys_end;
keir@19055 105 #endif
kaf24@3338 106
kaf24@2298 107 extern void arch_init_memory(void);
kaf24@1589 108 extern void init_IRQ(void);
kaf24@5604 109 extern void early_time_init(void);
kaf24@5167 110 extern void early_cpu_init(void);
kfraser@15747 111 extern void vesa_init(void);
kfraser@15747 112 extern void vesa_mtrr_init(void);
kaf24@1589 113
keir@18523 114 DEFINE_PER_CPU(struct desc_struct *, gdt_table) = boot_cpu_gdt_table;
keir@18523 115 #ifdef CONFIG_COMPAT
keir@18523 116 DEFINE_PER_CPU(struct desc_struct *, compat_gdt_table)
keir@18523 117 = boot_cpu_compat_gdt_table;
keir@18523 118 #endif
keir@18523 119
kaf24@8533 120 struct tss_struct init_tss[NR_CPUS];
kaf24@8533 121
kfraser@15490 122 char __attribute__ ((__section__(".bss.stack_aligned"))) cpu0_stack[STACK_SIZE];
kaf24@5011 123
keir@16144 124 struct cpuinfo_x86 boot_cpu_data = { 0, 0, 0, 0, -1 };
kaf24@1452 125
kaf24@1670 126 unsigned long mmu_cr4_features = X86_CR4_PSE | X86_CR4_PGE | X86_CR4_PAE;
kaf24@1452 127 EXPORT_SYMBOL(mmu_cr4_features);
kaf24@1452 128
kaf24@4818 129 int acpi_disabled;
kaf24@1452 130
kaf24@4850 131 int acpi_force;
kaf24@4850 132 char acpi_param[10] = "";
kfraser@15074 133 static void __init parse_acpi_param(char *s)
kaf24@4850 134 {
kaf24@4850 135 /* Save the parameter so it can be propagated to domain0. */
kfraser@13689 136 safe_strcpy(acpi_param, s);
kaf24@4850 137
kaf24@4850 138 /* Interpret the parameter for use within Xen. */
kaf24@4850 139 if ( !strcmp(s, "off") )
kaf24@4850 140 {
kaf24@4850 141 disable_acpi();
kaf24@4850 142 }
kaf24@4850 143 else if ( !strcmp(s, "force") )
kaf24@4850 144 {
kaf24@4850 145 acpi_force = 1;
kaf24@4850 146 acpi_ht = 1;
kaf24@4850 147 acpi_disabled = 0;
kaf24@4850 148 }
kaf24@4850 149 else if ( !strcmp(s, "strict") )
kaf24@4850 150 {
kaf24@4850 151 acpi_strict = 1;
kaf24@4850 152 }
kaf24@4850 153 else if ( !strcmp(s, "ht") )
kaf24@4850 154 {
kaf24@4850 155 if ( !acpi_force )
kaf24@4850 156 disable_acpi();
kaf24@4850 157 acpi_ht = 1;
kaf24@4850 158 }
kaf24@4850 159 else if ( !strcmp(s, "noirq") )
kaf24@4850 160 {
kaf24@4850 161 acpi_noirq_set();
kaf24@4850 162 }
kaf24@4850 163 }
kaf24@4850 164
kaf24@1452 165 static void __init do_initcalls(void)
kaf24@1452 166 {
kaf24@1452 167 initcall_t *call;
kaf24@1452 168 for ( call = &__initcall_start; call < &__initcall_end; call++ )
kaf24@1452 169 (*call)();
kaf24@1452 170 }
kaf24@1452 171
kfraser@15074 172 #define EARLY_FAIL(f, a...) do { \
kfraser@15074 173 printk( f , ## a ); \
kfraser@15871 174 for ( ; ; ) halt(); \
kfraser@15074 175 } while (0)
kaf24@8459 176
keir@19076 177 static unsigned long __initdata initial_images_base;
keir@19076 178 static unsigned long __initdata initial_images_start;
keir@19076 179 static unsigned long __initdata initial_images_end;
kaf24@9067 180
kfraser@15074 181 unsigned long __init initial_images_nrpages(void)
kaf24@9067 182 {
keir@19076 183 ASSERT(!(initial_images_base & ~PAGE_MASK));
kfraser@15489 184 ASSERT(!(initial_images_end & ~PAGE_MASK));
kfraser@15489 185 return ((initial_images_end >> PAGE_SHIFT) -
keir@19076 186 (initial_images_base >> PAGE_SHIFT));
kaf24@9067 187 }
kaf24@9067 188
kfraser@15074 189 void __init discard_initial_images(void)
kaf24@9067 190 {
keir@19076 191 init_domheap_pages(initial_images_base, initial_images_end);
kaf24@9067 192 }
kaf24@9067 193
kaf24@9818 194 extern char __per_cpu_start[], __per_cpu_data_end[], __per_cpu_end[];
kaf24@9818 195
kfraser@11241 196 static void __init percpu_init_areas(void)
kaf24@9818 197 {
kaf24@9818 198 unsigned int i, data_size = __per_cpu_data_end - __per_cpu_start;
kfraser@15074 199 unsigned int first_unused;
kaf24@9818 200
kaf24@9818 201 BUG_ON(data_size > PERCPU_SIZE);
kaf24@9818 202
kfraser@15074 203 /* Initialise per-cpu data area for all possible secondary CPUs. */
kfraser@15074 204 for ( i = 1; (i < NR_CPUS) && cpu_possible(i); i++ )
kfraser@15074 205 memcpy(__per_cpu_start + (i << PERCPU_SHIFT),
kfraser@15074 206 __per_cpu_start,
kfraser@15074 207 data_size);
kaf24@9818 208 first_unused = i;
kaf24@9818 209
kfraser@14340 210 /* Check that there are no holes in cpu_possible_map. */
kaf24@9818 211 for ( ; i < NR_CPUS; i++ )
kfraser@14340 212 BUG_ON(cpu_possible(i));
kaf24@9818 213
kfraser@11241 214 #ifndef MEMORY_GUARD
kaf24@9818 215 init_xenheap_pages(__pa(__per_cpu_start) + (first_unused << PERCPU_SHIFT),
kaf24@9818 216 __pa(__per_cpu_end));
kfraser@11241 217 #endif
keir@15082 218 memguard_guard_range(&__per_cpu_start[first_unused << PERCPU_SHIFT],
keir@15082 219 (NR_CPUS - first_unused) << PERCPU_SHIFT);
keir@15082 220 #if defined(CONFIG_X86_64)
keir@15082 221 /* Also zap the mapping in the 1:1 area. */
keir@15082 222 memguard_guard_range(__va(__pa(__per_cpu_start)) +
keir@15082 223 (first_unused << PERCPU_SHIFT),
keir@15082 224 (NR_CPUS - first_unused) << PERCPU_SHIFT);
keir@15082 225 #endif
kaf24@9818 226 }
kaf24@9818 227
kfraser@11241 228 static void __init init_idle_domain(void)
kfraser@11240 229 {
kfraser@11240 230 struct domain *idle_domain;
kfraser@11240 231
kfraser@11240 232 /* Domain creation requires that scheduler structures are initialised. */
kfraser@11240 233 scheduler_init();
kfraser@11240 234
kfraser@14911 235 idle_domain = domain_create(IDLE_DOMAIN_ID, 0, 0);
kfraser@11240 236 if ( (idle_domain == NULL) || (alloc_vcpu(idle_domain, 0, 0) == NULL) )
kfraser@11240 237 BUG();
kfraser@11240 238
kfraser@11240 239 set_current(idle_domain->vcpu[0]);
kfraser@11240 240 idle_vcpu[0] = this_cpu(curr_vcpu) = current;
kfraser@11240 241
kfraser@11240 242 setup_idle_pagetable();
kfraser@11240 243 }
kfraser@11240 244
kfraser@15074 245 static void __init srat_detect_node(int cpu)
kfraser@11971 246 {
kfraser@11998 247 unsigned node;
keir@17551 248 u32 apicid = x86_cpu_to_apicid[cpu];
kfraser@11971 249
kfraser@11998 250 node = apicid_to_node[apicid];
kfraser@11998 251 if ( node == NUMA_NO_NODE )
kfraser@11998 252 node = 0;
kfraser@11998 253 numa_set_node(cpu, node);
kfraser@11971 254
kfraser@11998 255 if ( acpi_numa > 0 )
kfraser@11998 256 printk(KERN_INFO "CPU %d APIC %d -> Node %d\n", cpu, apicid, node);
kfraser@11971 257 }
kfraser@11971 258
kfraser@15740 259 /*
kfraser@15740 260 * Ensure a given physical memory range is present in the bootstrap mappings.
kfraser@15740 261 * Use superpage mappings to ensure that pagetable memory needn't be allocated.
kfraser@15740 262 */
kfraser@15740 263 static void __init bootstrap_map(unsigned long start, unsigned long end)
kfraser@15740 264 {
kfraser@15740 265 unsigned long mask = (1UL << L2_PAGETABLE_SHIFT) - 1;
keir@16888 266 start = max_t(unsigned long, start & ~mask, 16UL << 20);
kfraser@15740 267 end = (end + mask) & ~mask;
keir@16888 268 if ( start >= end )
keir@16888 269 return;
kfraser@15740 270 if ( end > BOOTSTRAP_DIRECTMAP_END )
kfraser@15740 271 panic("Cannot access memory beyond end of "
kfraser@15740 272 "bootstrap direct-map area\n");
kfraser@15740 273 map_pages_to_xen(
kfraser@15740 274 (unsigned long)maddr_to_bootstrap_virt(start),
kfraser@15740 275 start >> PAGE_SHIFT, (end-start) >> PAGE_SHIFT, PAGE_HYPERVISOR);
kfraser@15740 276 }
kfraser@15740 277
kfraser@15074 278 static void __init move_memory(
kfraser@15074 279 unsigned long dst, unsigned long src_start, unsigned long src_end)
ian@12677 280 {
kfraser@15740 281 bootstrap_map(src_start, src_end);
kfraser@15740 282 bootstrap_map(dst, dst + src_end - src_start);
kfraser@15074 283 memmove(maddr_to_bootstrap_virt(dst),
kfraser@15074 284 maddr_to_bootstrap_virt(src_start),
ian@12677 285 src_end - src_start);
kfraser@15074 286 }
kfraser@15074 287
kfraser@15074 288 /* A temporary copy of the e820 map that we can mess with during bootstrap. */
kfraser@15074 289 static struct e820map __initdata boot_e820;
kfraser@15074 290
keir@15298 291 struct boot_video_info {
keir@15298 292 u8 orig_x; /* 0x00 */
keir@15298 293 u8 orig_y; /* 0x01 */
keir@15298 294 u8 orig_video_mode; /* 0x02 */
keir@15298 295 u8 orig_video_cols; /* 0x03 */
keir@15298 296 u8 orig_video_lines; /* 0x04 */
keir@15298 297 u8 orig_video_isVGA; /* 0x05 */
keir@15298 298 u16 orig_video_points; /* 0x06 */
keir@15298 299
keir@15298 300 /* VESA graphic mode -- linear frame buffer */
keir@15298 301 u32 capabilities; /* 0x08 */
keir@15298 302 u16 lfb_linelength; /* 0x0c */
keir@15298 303 u16 lfb_width; /* 0x0e */
keir@15298 304 u16 lfb_height; /* 0x10 */
keir@15298 305 u16 lfb_depth; /* 0x12 */
keir@15298 306 u32 lfb_base; /* 0x14 */
keir@15298 307 u32 lfb_size; /* 0x18 */
keir@15298 308 u8 red_size; /* 0x1c */
keir@15298 309 u8 red_pos; /* 0x1d */
keir@15298 310 u8 green_size; /* 0x1e */
keir@15298 311 u8 green_pos; /* 0x1f */
keir@15298 312 u8 blue_size; /* 0x20 */
keir@15298 313 u8 blue_pos; /* 0x21 */
keir@15298 314 u8 rsvd_size; /* 0x22 */
keir@15298 315 u8 rsvd_pos; /* 0x23 */
keir@15298 316 u16 vesapm_seg; /* 0x24 */
keir@15298 317 u16 vesapm_off; /* 0x26 */
keir@16124 318 u16 vesa_attrib; /* 0x28 */
keir@15298 319 };
keir@15298 320
keir@15298 321 static void __init parse_video_info(void)
keir@15298 322 {
keir@15298 323 struct boot_video_info *bvi = &bootsym(boot_vid_info);
keir@15298 324
keir@15298 325 if ( (bvi->orig_video_isVGA == 1) && (bvi->orig_video_mode == 3) )
keir@15298 326 {
keir@15298 327 vga_console_info.video_type = XEN_VGATYPE_TEXT_MODE_3;
keir@15298 328 vga_console_info.u.text_mode_3.font_height = bvi->orig_video_points;
keir@15298 329 vga_console_info.u.text_mode_3.cursor_x = bvi->orig_x;
keir@15298 330 vga_console_info.u.text_mode_3.cursor_y = bvi->orig_y;
keir@15298 331 vga_console_info.u.text_mode_3.rows = bvi->orig_video_lines;
keir@15298 332 vga_console_info.u.text_mode_3.columns = bvi->orig_video_cols;
keir@15298 333 }
keir@15298 334 else if ( bvi->orig_video_isVGA == 0x23 )
keir@15298 335 {
keir@15298 336 vga_console_info.video_type = XEN_VGATYPE_VESA_LFB;
keir@15298 337 vga_console_info.u.vesa_lfb.width = bvi->lfb_width;
keir@15298 338 vga_console_info.u.vesa_lfb.height = bvi->lfb_height;
keir@15298 339 vga_console_info.u.vesa_lfb.bytes_per_line = bvi->lfb_linelength;
keir@15298 340 vga_console_info.u.vesa_lfb.bits_per_pixel = bvi->lfb_depth;
keir@15298 341 vga_console_info.u.vesa_lfb.lfb_base = bvi->lfb_base;
keir@15298 342 vga_console_info.u.vesa_lfb.lfb_size = bvi->lfb_size;
keir@15298 343 vga_console_info.u.vesa_lfb.red_pos = bvi->red_pos;
keir@15298 344 vga_console_info.u.vesa_lfb.red_size = bvi->red_size;
keir@15298 345 vga_console_info.u.vesa_lfb.green_pos = bvi->green_pos;
keir@15298 346 vga_console_info.u.vesa_lfb.green_size = bvi->green_size;
keir@15298 347 vga_console_info.u.vesa_lfb.blue_pos = bvi->blue_pos;
keir@15298 348 vga_console_info.u.vesa_lfb.blue_size = bvi->blue_size;
keir@15298 349 vga_console_info.u.vesa_lfb.rsvd_pos = bvi->rsvd_pos;
keir@15298 350 vga_console_info.u.vesa_lfb.rsvd_size = bvi->rsvd_size;
keir@16124 351 vga_console_info.u.vesa_lfb.gbl_caps = bvi->capabilities;
keir@16124 352 vga_console_info.u.vesa_lfb.mode_attrs = bvi->vesa_attrib;
keir@15298 353 }
keir@15298 354 }
keir@15298 355
keir@16563 356 void __init kexec_reserve_area(struct e820map *e820)
keir@16563 357 {
keir@16563 358 unsigned long kdump_start = kexec_crash_area.start;
keir@16563 359 unsigned long kdump_size = kexec_crash_area.size;
keir@16563 360 static int is_reserved = 0;
keir@16563 361
keir@16563 362 kdump_size = (kdump_size + PAGE_SIZE - 1) & PAGE_MASK;
keir@16563 363
keir@16563 364 if ( (kdump_start == 0) || (kdump_size == 0) || is_reserved )
keir@16563 365 return;
keir@16563 366
keir@16563 367 is_reserved = 1;
keir@16563 368
keir@17674 369 if ( !reserve_e820_ram(e820, kdump_start, kdump_start + kdump_size) )
keir@16563 370 {
keir@16563 371 printk("Kdump: DISABLED (failed to reserve %luMB (%lukB) at 0x%lx)"
keir@16563 372 "\n", kdump_size >> 20, kdump_size >> 10, kdump_start);
keir@16563 373 kexec_crash_area.start = kexec_crash_area.size = 0;
keir@16563 374 }
keir@16563 375 else
keir@16563 376 {
keir@16563 377 printk("Kdump: %luMB (%lukB) at 0x%lx\n",
keir@16563 378 kdump_size >> 20, kdump_size >> 10, kdump_start);
keir@16563 379 }
keir@16563 380 }
keir@16563 381
keir@15082 382 void init_done(void)
keir@15082 383 {
keir@15082 384 extern char __init_begin[], __init_end[];
keir@15082 385
keir@15082 386 /* Free (or page-protect) the init areas. */
keir@18988 387 memset(__init_begin, 0xcc, __init_end - __init_begin); /* int3 poison */
keir@15082 388 #ifndef MEMORY_GUARD
keir@15082 389 init_xenheap_pages(__pa(__init_begin), __pa(__init_end));
keir@15082 390 #endif
keir@15082 391 memguard_guard_range(__init_begin, __init_end - __init_begin);
keir@15082 392 #if defined(CONFIG_X86_64)
keir@15082 393 /* Also zap the mapping in the 1:1 area. */
keir@15082 394 memguard_guard_range(__va(__pa(__init_begin)), __init_end - __init_begin);
keir@15082 395 #endif
keir@15082 396 printk("Freed %ldkB init memory.\n", (long)(__init_end-__init_begin)>>10);
keir@15082 397
keir@15082 398 startup_cpu_idle_loop();
keir@15082 399 }
keir@15082 400
kfraser@15796 401 static char * __init cmdline_cook(char *p)
kfraser@15796 402 {
kfraser@15796 403 p = p ? : "";
kfraser@15796 404 while ( *p == ' ' )
kfraser@15796 405 p++;
kfraser@15796 406 while ( (*p != ' ') && (*p != '\0') )
kfraser@15796 407 p++;
kfraser@15796 408 while ( *p == ' ' )
kfraser@15796 409 p++;
kfraser@15796 410 return p;
kfraser@15796 411 }
kfraser@15796 412
kfraser@15379 413 void __init __start_xen(unsigned long mbi_p)
kaf24@1452 414 {
kfraser@15293 415 char *memmap_type = NULL;
kfraser@15796 416 char *cmdline, *kextra;
kaf24@8457 417 unsigned long _initrd_start = 0, _initrd_len = 0;
kaf24@8457 418 unsigned int initrdidx = 1;
kfraser@15379 419 multiboot_info_t *mbi = __va(mbi_p);
kaf24@8457 420 module_t *mod = (module_t *)__va(mbi->mods_addr);
keir@19135 421 unsigned long nr_pages, modules_length, modules_headroom;
keir@19544 422 int i, j, e820_warn = 0, bytes = 0;
kaf24@5776 423 struct ns16550_defaults ns16550 = {
kaf24@5776 424 .data_bits = 8,
kaf24@5776 425 .parity = 'n',
kaf24@5776 426 .stop_bits = 1
kaf24@5776 427 };
kaf24@3338 428
kfraser@12853 429 extern void early_page_fault(void);
kfraser@12853 430 set_intr_gate(TRAP_page_fault, &early_page_fault);
kfraser@12853 431
kaf24@3338 432 /* Parse the command-line options. */
kfraser@15796 433 cmdline = cmdline_cook((mbi->flags & MBI_CMDLINE) ?
kfraser@15796 434 __va(mbi->cmdline) : NULL);
kfraser@15426 435 if ( (kextra = strstr(cmdline, " -- ")) != NULL )
kfraser@15426 436 {
kfraser@15426 437 /*
kfraser@15426 438 * Options after ' -- ' separator belong to dom0.
kfraser@15426 439 * 1. Orphan dom0's options from Xen's command line.
kfraser@15426 440 * 2. Skip all but final leading space from dom0's options.
kfraser@15426 441 */
kfraser@15426 442 *kextra = '\0';
kfraser@15426 443 kextra += 3;
kfraser@15426 444 while ( kextra[1] == ' ' ) kextra++;
kfraser@15426 445 }
kaf24@9823 446 cmdline_parse(cmdline);
kaf24@3338 447
keir@15298 448 parse_video_info();
keir@15298 449
kaf24@8534 450 set_current((struct vcpu *)0xfffff000); /* debug sanity */
keir@18790 451 idle_vcpu[0] = current;
kaf24@8534 452 set_processor_id(0); /* needed early, for smp_processor_id() */
keir@16378 453 if ( cpu_has_efer )
keir@16378 454 rdmsrl(MSR_EFER, this_cpu(efer));
keir@16267 455 asm volatile ( "mov %%cr4,%0" : "=r" (this_cpu(cr4)) );
kaf24@3338 456
kaf24@5146 457 smp_prepare_boot_cpu();
kaf24@5146 458
kaf24@3338 459 /* We initialise the serial devices very early so we can get debugging. */
kaf24@5776 460 ns16550.io_base = 0x3f8;
kaf24@5776 461 ns16550.irq = 4;
kaf24@5776 462 ns16550_init(0, &ns16550);
kaf24@5776 463 ns16550.io_base = 0x2f8;
kaf24@5776 464 ns16550.irq = 3;
kaf24@5776 465 ns16550_init(1, &ns16550);
keir@19543 466 console_init_preirq();
kaf24@3338 467
kfraser@11947 468 printk("Command line: %s\n", cmdline);
kaf24@9823 469
kfraser@15330 470 printk("Video information:\n");
kfraser@15330 471
kfraser@15330 472 /* Print VGA display mode information. */
keir@15298 473 switch ( vga_console_info.video_type )
keir@15298 474 {
keir@15298 475 case XEN_VGATYPE_TEXT_MODE_3:
kfraser@15330 476 printk(" VGA is text mode %dx%d, font 8x%d\n",
keir@15298 477 vga_console_info.u.text_mode_3.columns,
keir@15298 478 vga_console_info.u.text_mode_3.rows,
keir@15298 479 vga_console_info.u.text_mode_3.font_height);
keir@15298 480 break;
keir@15298 481 case XEN_VGATYPE_VESA_LFB:
kfraser@15330 482 printk(" VGA is graphics mode %dx%d, %d bpp\n",
keir@15298 483 vga_console_info.u.vesa_lfb.width,
keir@15298 484 vga_console_info.u.vesa_lfb.height,
keir@15298 485 vga_console_info.u.vesa_lfb.bits_per_pixel);
keir@15298 486 break;
kfraser@15330 487 default:
kfraser@15330 488 printk(" No VGA detected\n");
kfraser@15330 489 break;
kfraser@15330 490 }
kfraser@15330 491
kfraser@15330 492 /* Print VBE/DDC EDID information. */
kfraser@15330 493 if ( bootsym(boot_edid_caps) != 0x1313 )
kfraser@15330 494 {
kfraser@15330 495 u16 caps = bootsym(boot_edid_caps);
kfraser@15330 496 printk(" VBE/DDC methods:%s%s%s; ",
kfraser@15330 497 (caps & 1) ? " V1" : "",
kfraser@15330 498 (caps & 2) ? " V2" : "",
kfraser@15330 499 !(caps & 3) ? " none" : "");
kfraser@15330 500 printk("EDID transfer time: %d seconds\n", caps >> 8);
kfraser@15330 501 if ( *(u32 *)bootsym(boot_edid_info) == 0x13131313 )
kfraser@15330 502 {
kfraser@15330 503 printk(" EDID info not retrieved because ");
kfraser@15330 504 if ( !(caps & 3) )
kfraser@15330 505 printk("no DDC retrieval method detected\n");
kfraser@15330 506 else if ( (caps >> 8) > 5 )
kfraser@15330 507 printk("takes longer than 5 seconds\n");
kfraser@15330 508 else
kfraser@15330 509 printk("of reasons unknown\n");
kfraser@15330 510 }
keir@15298 511 }
keir@15298 512
kfraser@15336 513 printk("Disc information:\n");
kfraser@15336 514 printk(" Found %d MBR signatures\n",
kfraser@15430 515 bootsym(boot_mbr_signature_nr));
kfraser@15336 516 printk(" Found %d EDD information structures\n",
kfraser@15336 517 bootsym(boot_edd_info_nr));
kfraser@15336 518
kaf24@3344 519 /* Check that we have at least one Multiboot module. */
kaf24@3344 520 if ( !(mbi->flags & MBI_MODULES) || (mbi->mods_count == 0) )
kfraser@15074 521 EARLY_FAIL("dom0 kernel not specified. "
kfraser@15074 522 "Check bootloader configuration.\n");
kaf24@5011 523
kaf24@5011 524 if ( ((unsigned long)cpu0_stack & (STACK_SIZE-1)) != 0 )
kfraser@15074 525 EARLY_FAIL("Misaligned CPU0 stack.\n");
kaf24@3338 526
kfraser@15293 527 if ( e820_raw_nr != 0 )
kfraser@15292 528 {
kfraser@15293 529 memmap_type = "Xen-e820";
kfraser@15292 530 }
kfraser@15293 531 else if ( bootsym(lowmem_kb) )
kfraser@15292 532 {
kfraser@15293 533 memmap_type = "Xen-e801";
kfraser@15292 534 e820_raw[0].addr = 0;
kfraser@15293 535 e820_raw[0].size = bootsym(lowmem_kb) << 10;
kfraser@15292 536 e820_raw[0].type = E820_RAM;
kfraser@15292 537 e820_raw[1].addr = 0x100000;
kfraser@15293 538 e820_raw[1].size = bootsym(highmem_kb) << 10;
kfraser@15292 539 e820_raw[1].type = E820_RAM;
kfraser@15292 540 e820_raw_nr = 2;
kfraser@15292 541 }
kfraser@15292 542 else if ( mbi->flags & MBI_MEMMAP )
kaf24@3344 543 {
kfraser@15293 544 memmap_type = "Multiboot-e820";
keir@15988 545 while ( (bytes < mbi->mmap_length) && (e820_raw_nr < E820MAX) )
kaf24@3344 546 {
kaf24@3344 547 memory_map_t *map = __va(mbi->mmap_addr + bytes);
kaf24@8402 548
kaf24@8402 549 /*
kaf24@8403 550 * This is a gross workaround for a BIOS bug. Some bootloaders do
kaf24@8402 551 * not write e820 map entries into pre-zeroed memory. This is
kaf24@8402 552 * okay if the BIOS fills in all fields of the map entry, but
kaf24@8402 553 * some broken BIOSes do not bother to write the high word of
kaf24@8402 554 * the length field if the length is smaller than 4GB. We
kaf24@8402 555 * detect and fix this by flagging sections below 4GB that
kaf24@8403 556 * appear to be larger than 4GB in size.
kaf24@8402 557 */
kaf24@8403 558 if ( (map->base_addr_high == 0) && (map->length_high != 0) )
kaf24@8402 559 {
kfraser@15292 560 if ( !e820_warn )
kfraser@15292 561 {
kfraser@15292 562 printk("WARNING: Buggy e820 map detected and fixed "
kfraser@15292 563 "(truncated length fields).\n");
kfraser@15292 564 e820_warn = 1;
kfraser@15292 565 }
kaf24@8402 566 map->length_high = 0;
kaf24@8402 567 }
kaf24@8402 568
kaf24@3344 569 e820_raw[e820_raw_nr].addr =
kaf24@3344 570 ((u64)map->base_addr_high << 32) | (u64)map->base_addr_low;
kaf24@3344 571 e820_raw[e820_raw_nr].size =
kaf24@3344 572 ((u64)map->length_high << 32) | (u64)map->length_low;
kfraser@15799 573 e820_raw[e820_raw_nr].type = map->type;
kaf24@3344 574 e820_raw_nr++;
kaf24@8402 575
kaf24@3344 576 bytes += map->size + 4;
kaf24@3344 577 }
kaf24@3344 578 }
kaf24@3344 579 else if ( mbi->flags & MBI_MEMLIMITS )
kaf24@3344 580 {
kfraser@15293 581 memmap_type = "Multiboot-e801";
kaf24@3344 582 e820_raw[0].addr = 0;
kaf24@3344 583 e820_raw[0].size = mbi->mem_lower << 10;
kaf24@3344 584 e820_raw[0].type = E820_RAM;
kaf24@3354 585 e820_raw[1].addr = 0x100000;
kaf24@3354 586 e820_raw[1].size = mbi->mem_upper << 10;
kaf24@3354 587 e820_raw[1].type = E820_RAM;
kaf24@3344 588 e820_raw_nr = 2;
kaf24@3344 589 }
kaf24@3344 590 else
kaf24@3344 591 {
kfraser@15074 592 EARLY_FAIL("Bootloader provided no memory information.\n");
kaf24@3344 593 }
kaf24@3344 594
kaf24@13427 595 /* Sanitise the raw E820 map to produce a final clean version. */
kfraser@15293 596 max_page = init_e820(memmap_type, e820_raw, &e820_raw_nr);
kaf24@3338 597
keir@16563 598 /* Create a temporary copy of the E820 map. */
kfraser@15074 599 memcpy(&boot_e820, &e820, sizeof(e820));
keir@16563 600
keir@16563 601 /* Early kexec reservation (explicit static start address). */
keir@16563 602 kexec_reserve_area(&boot_e820);
kaf24@6111 603
kfraser@15074 604 /*
keir@15077 605 * Iterate backwards over all superpage-aligned RAM regions.
kfraser@15074 606 *
kfraser@15074 607 * We require superpage alignment because the boot allocator is not yet
kfraser@15074 608 * initialised. Hence we can only map superpages in the address range
kfraser@15074 609 * 0 to BOOTSTRAP_DIRECTMAP_END, as this is guaranteed not to require
kfraser@15074 610 * dynamic allocation of pagetables.
kfraser@15074 611 *
kfraser@15074 612 * As well as mapping superpages in that range, in preparation for
kfraser@15074 613 * initialising the boot allocator, we also look for a region to which
kfraser@15074 614 * we can relocate the dom0 kernel and other multiboot modules. Also, on
kfraser@15074 615 * x86/64, we relocate Xen to higher memory.
kfraser@15074 616 */
keir@19544 617 modules_length = 0;
keir@19544 618 for ( i = 0; i < mbi->mods_count; i++ )
keir@19544 619 modules_length += mod[i].mod_end - mod[i].mod_start;
keir@19076 620
keir@19135 621 /* ensure mod[0] is mapped before parsing */
keir@19135 622 bootstrap_map(mod[0].mod_start, mod[0].mod_end);
keir@19135 623 modules_headroom = bzimage_headroom(
keir@19135 624 (char *)(unsigned long)mod[0].mod_start,
keir@19135 625 (unsigned long)(mod[0].mod_end - mod[0].mod_start));
keir@19135 626
keir@15077 627 for ( i = boot_e820.nr_map-1; i >= 0; i-- )
kfraser@15074 628 {
kfraser@15074 629 uint64_t s, e, mask = (1UL << L2_PAGETABLE_SHIFT) - 1;
kaf24@6134 630
keir@16563 631 /* Superpage-aligned chunks from 16MB to BOOTSTRAP_DIRECTMAP_END. */
kfraser@15074 632 s = (boot_e820.map[i].addr + mask) & ~mask;
kfraser@15074 633 e = (boot_e820.map[i].addr + boot_e820.map[i].size) & ~mask;
keir@16563 634 s = max_t(uint64_t, s, 16 << 20);
kfraser@15074 635 e = min_t(uint64_t, e, BOOTSTRAP_DIRECTMAP_END);
kfraser@15074 636 if ( (boot_e820.map[i].type != E820_RAM) || (s >= e) )
kaf24@3354 637 continue;
kaf24@6111 638
kfraser@15074 639 /* Map the chunk. No memory will need to be allocated to do this. */
kfraser@15074 640 map_pages_to_xen(
kfraser@15074 641 (unsigned long)maddr_to_bootstrap_virt(s),
kfraser@15074 642 s >> PAGE_SHIFT, (e-s) >> PAGE_SHIFT, PAGE_HYPERVISOR);
kaf24@6111 643
kfraser@14084 644 #if defined(CONFIG_X86_64)
keir@19190 645 /* Relocate Xen image, allocation bitmap, and one page of padding. */
keir@19190 646 #define reloc_size ((__pa(&_end) + max_page/8 + PAGE_SIZE + mask) & ~mask)
kfraser@15074 647 /* Is the region suitable for relocating Xen? */
keir@19055 648 if ( !xen_phys_start && ((e-s) >= reloc_size) )
kaf24@5003 649 {
kfraser@15074 650 extern l2_pgentry_t l2_xenmap[];
kfraser@15074 651 l4_pgentry_t *pl4e;
kfraser@15074 652 l3_pgentry_t *pl3e;
kfraser@15074 653 l2_pgentry_t *pl2e;
keir@16888 654 int i, j, k;
kfraser@15074 655
kfraser@15074 656 /* Select relocation address. */
keir@19055 657 e -= reloc_size;
kfraser@15074 658 xen_phys_start = e;
kfraser@15292 659 bootsym(trampoline_xen_phys_start) = e;
kfraser@15074 660
kfraser@15074 661 /*
kfraser@15074 662 * Perform relocation to new physical address.
kfraser@15074 663 * Before doing so we must sync static/global data with main memory
kfraser@15074 664 * with a barrier(). After this we must *not* modify static/global
kfraser@15074 665 * data until after we have switched to the relocated pagetables!
kfraser@15074 666 */
kfraser@15074 667 barrier();
kfraser@15074 668 move_memory(e, 0, __pa(&_end) - xen_phys_start);
kfraser@15074 669
kfraser@15379 670 /* Poison low 1MB to detect stray pointers to physical 0-1MB. */
kfraser@15379 671 memset(maddr_to_bootstrap_virt(e), 0x55, 1U<<20);
kfraser@15379 672
kfraser@15074 673 /* Walk initial pagetables, relocating page directory entries. */
kfraser@15074 674 pl4e = __va(__pa(idle_pg_table));
kfraser@15074 675 for ( i = 0 ; i < L4_PAGETABLE_ENTRIES; i++, pl4e++ )
kfraser@15074 676 {
kfraser@15074 677 if ( !(l4e_get_flags(*pl4e) & _PAGE_PRESENT) )
kfraser@15074 678 continue;
kfraser@15074 679 *pl4e = l4e_from_intpte(l4e_get_intpte(*pl4e) +
kfraser@15074 680 xen_phys_start);
kfraser@15074 681 pl3e = l4e_to_l3e(*pl4e);
kfraser@15074 682 for ( j = 0; j < L3_PAGETABLE_ENTRIES; j++, pl3e++ )
kfraser@15074 683 {
keir@16921 684 /* Not present, 1GB mapping, or already relocated? */
kfraser@15074 685 if ( !(l3e_get_flags(*pl3e) & _PAGE_PRESENT) ||
keir@16921 686 (l3e_get_flags(*pl3e) & _PAGE_PSE) ||
kfraser@15074 687 (l3e_get_pfn(*pl3e) > 0x1000) )
kfraser@15074 688 continue;
kfraser@15074 689 *pl3e = l3e_from_intpte(l3e_get_intpte(*pl3e) +
kfraser@15074 690 xen_phys_start);
keir@16888 691 pl2e = l3e_to_l2e(*pl3e);
keir@16888 692 for ( k = 0; k < L2_PAGETABLE_ENTRIES; k++, pl2e++ )
keir@16888 693 {
keir@16888 694 /* Not present, PSE, or already relocated? */
keir@16888 695 if ( !(l2e_get_flags(*pl2e) & _PAGE_PRESENT) ||
keir@16888 696 (l2e_get_flags(*pl2e) & _PAGE_PSE) ||
keir@16888 697 (l2e_get_pfn(*pl2e) > 0x1000) )
keir@16888 698 continue;
keir@16888 699 *pl2e = l2e_from_intpte(l2e_get_intpte(*pl2e) +
keir@16888 700 xen_phys_start);
keir@16888 701 }
kfraser@15074 702 }
kfraser@15074 703 }
kfraser@15074 704
kfraser@15074 705 /* The only data mappings to be relocated are in the Xen area. */
kfraser@15074 706 pl2e = __va(__pa(l2_xenmap));
keir@16888 707 *pl2e++ = l2e_from_pfn(xen_phys_start >> PAGE_SHIFT,
keir@16888 708 PAGE_HYPERVISOR | _PAGE_PSE);
keir@16888 709 for ( i = 1; i < L2_PAGETABLE_ENTRIES; i++, pl2e++ )
kfraser@15074 710 {
kfraser@15074 711 if ( !(l2e_get_flags(*pl2e) & _PAGE_PRESENT) )
kfraser@15074 712 continue;
kfraser@15074 713 *pl2e = l2e_from_intpte(l2e_get_intpte(*pl2e) +
kfraser@15074 714 xen_phys_start);
kfraser@15074 715 }
kfraser@15074 716
kfraser@15074 717 /* Re-sync the stack and then switch to relocated pagetables. */
kfraser@15074 718 asm volatile (
kfraser@15074 719 "rep movsb ; " /* re-sync the stack */
kfraser@15074 720 "movq %%cr4,%%rsi ; "
kfraser@15074 721 "andb $0x7f,%%sil ; "
kfraser@15074 722 "movq %%rsi,%%cr4 ; " /* CR4.PGE == 0 */
kfraser@15074 723 "movq %0,%%cr3 ; " /* CR3 == new pagetables */
kfraser@15074 724 "orb $0x80,%%sil ; "
kfraser@15074 725 "movq %%rsi,%%cr4 " /* CR4.PGE == 1 */
kfraser@15074 726 : : "r" (__pa(idle_pg_table)), "S" (cpu0_stack),
kfraser@15074 727 "D" (__va(__pa(cpu0_stack))), "c" (STACK_SIZE) : "memory" );
kaf24@5003 728 }
kaf24@5003 729 #endif
keir@15077 730
keir@15077 731 /* Is the region suitable for relocating the multiboot modules? */
keir@19076 732 if ( !initial_images_start && (s < e) &&
keir@19076 733 ((e-s) >= (modules_length+modules_headroom)) )
keir@15077 734 {
kfraser@15489 735 initial_images_end = e;
kfraser@15489 736 e = (e - modules_length) & PAGE_MASK;
keir@15077 737 initial_images_start = e;
keir@19076 738 e -= modules_headroom;
keir@19076 739 initial_images_base = e;
keir@19544 740 e += modules_length + modules_headroom;
keir@19544 741 for ( j = mbi->mods_count-1; j >= 0; j-- )
keir@19544 742 {
keir@19544 743 e -= mod[j].mod_end - mod[j].mod_start;
keir@19544 744 move_memory(e, mod[j].mod_start, mod[j].mod_end);
keir@19544 745 mod[j].mod_end += e - mod[j].mod_start;
keir@19544 746 mod[j].mod_start = e;
keir@19544 747 }
keir@15077 748 }
kfraser@15489 749
kfraser@15489 750 if ( !kexec_crash_area.start && (s < e) &&
kfraser@15489 751 ((e-s) >= kexec_crash_area.size) )
kfraser@15489 752 {
kfraser@15489 753 e = (e - kexec_crash_area.size) & PAGE_MASK;
kfraser@15489 754 kexec_crash_area.start = e;
kfraser@15489 755 }
kaf24@3354 756 }
kaf24@3354 757
kfraser@15074 758 if ( !initial_images_start )
kfraser@15074 759 EARLY_FAIL("Not enough memory to relocate the dom0 kernel image.\n");
keir@19076 760 reserve_e820_ram(&boot_e820, initial_images_base, initial_images_end);
kfraser@15074 761
keir@19055 762 /* Initialise boot heap. */
keir@19055 763 allocator_bitmap_end = init_boot_allocator(__pa(&_end));
keir@19055 764 #if defined(CONFIG_X86_32)
keir@19061 765 xenheap_initial_phys_start = allocator_bitmap_end;
keir@19061 766 xenheap_phys_end = DIRECTMAP_MBYTES << 20;
keir@19055 767 #else
kfraser@15074 768 if ( !xen_phys_start )
kfraser@15074 769 EARLY_FAIL("Not enough memory to relocate Xen.\n");
keir@19055 770 reserve_e820_ram(&boot_e820, __pa(&_start), allocator_bitmap_end);
kfraser@15074 771 #endif
kfraser@15074 772
keir@16563 773 /* Late kexec reservation (dynamic start address). */
keir@16563 774 kexec_reserve_area(&boot_e820);
kfraser@15489 775
kfraser@15074 776 /*
keir@16624 777 * With the boot allocator now initialised, we can walk every RAM region
keir@16624 778 * and map it in its entirety (on x86/64, at least) and notify it to the
kfraser@15074 779 * boot allocator.
kfraser@15074 780 */
kfraser@15074 781 for ( i = 0; i < boot_e820.nr_map; i++ )
kfraser@15074 782 {
keir@16563 783 uint64_t s, e, map_s, map_e, mask = PAGE_SIZE - 1;
kfraser@15074 784
kfraser@15074 785 /* Only page alignment required now. */
kfraser@15074 786 s = (boot_e820.map[i].addr + mask) & ~mask;
kfraser@15074 787 e = (boot_e820.map[i].addr + boot_e820.map[i].size) & ~mask;
keir@16563 788 #if defined(CONFIG_X86_32)
keir@16563 789 s = max_t(uint64_t, s, xenheap_phys_end);
keir@16563 790 #else
keir@16563 791 s = max_t(uint64_t, s, 1<<20);
keir@16563 792 #endif
kfraser@15074 793 if ( (boot_e820.map[i].type != E820_RAM) || (s >= e) )
kfraser@15074 794 continue;
kfraser@15074 795
keir@16563 796 /* Need to create mappings above 16MB. */
keir@16563 797 map_s = max_t(uint64_t, s, 16<<20);
kfraser@15074 798 map_e = e;
keir@16563 799 #if defined(CONFIG_X86_32) /* mappings are truncated on x86_32 */
kfraser@15074 800 map_e = min_t(uint64_t, map_e, BOOTSTRAP_DIRECTMAP_END);
kfraser@15074 801 #endif
keir@16563 802
keir@16563 803 /* Pass mapped memory to allocator /before/ creating new mappings. */
keir@16624 804 init_boot_pages(s, min_t(uint64_t, map_s, e));
keir@16563 805
keir@16563 806 /* Create new mappings /before/ passing memory to the allocator. */
keir@16563 807 if ( map_s < map_e )
kfraser@15074 808 map_pages_to_xen(
keir@16563 809 (unsigned long)maddr_to_bootstrap_virt(map_s),
keir@16563 810 map_s >> PAGE_SHIFT, (map_e-map_s) >> PAGE_SHIFT,
keir@16563 811 PAGE_HYPERVISOR);
kfraser@15074 812
keir@16563 813 /* Pass remainder of this memory chunk to the allocator. */
keir@16624 814 init_boot_pages(map_s, e);
kfraser@15074 815 }
kfraser@15074 816
kaf24@5003 817 memguard_init();
kaf24@4950 818
kfraser@15074 819 nr_pages = 0;
kfraser@15074 820 for ( i = 0; i < e820.nr_map; i++ )
kfraser@15074 821 if ( e820.map[i].type == E820_RAM )
kfraser@15074 822 nr_pages += e820.map[i].size >> PAGE_SHIFT;
ian@12681 823 printk("System RAM: %luMB (%lukB)\n",
kaf24@3354 824 nr_pages >> (20 - PAGE_SHIFT),
kaf24@3354 825 nr_pages << (PAGE_SHIFT - 10));
kaf24@7220 826 total_pages = nr_pages;
kaf24@3354 827
kfraser@11296 828 /* Sanity check for unwanted bloat of certain hypercall structures. */
kfraser@11296 829 BUILD_BUG_ON(sizeof(((struct xen_platform_op *)0)->u) !=
kfraser@11296 830 sizeof(((struct xen_platform_op *)0)->u.pad));
kfraser@11296 831 BUILD_BUG_ON(sizeof(((struct xen_domctl *)0)->u) !=
kfraser@11296 832 sizeof(((struct xen_domctl *)0)->u.pad));
kfraser@11296 833 BUILD_BUG_ON(sizeof(((struct xen_sysctl *)0)->u) !=
kfraser@11296 834 sizeof(((struct xen_sysctl *)0)->u.pad));
kaf24@7388 835
kaf24@9878 836 BUILD_BUG_ON(sizeof(start_info_t) > PAGE_SIZE);
kaf24@9878 837 BUILD_BUG_ON(sizeof(shared_info_t) > PAGE_SIZE);
ack@13292 838 BUILD_BUG_ON(sizeof(struct vcpu_info) != 64);
kaf24@7744 839
ack@13291 840 #ifdef CONFIG_COMPAT
ack@13291 841 BUILD_BUG_ON(sizeof(((struct compat_platform_op *)0)->u) !=
ack@13291 842 sizeof(((struct compat_platform_op *)0)->u.pad));
ack@13291 843 BUILD_BUG_ON(sizeof(start_info_compat_t) > PAGE_SIZE);
ack@13292 844 BUILD_BUG_ON(sizeof(struct compat_vcpu_info) != 64);
ack@13291 845 #endif
ack@13291 846
kfraser@10492 847 /* Check definitions in public headers match internal defs. */
kaf24@9878 848 BUILD_BUG_ON(__HYPERVISOR_VIRT_START != HYPERVISOR_VIRT_START);
kaf24@8521 849 #ifdef HYPERVISOR_VIRT_END
kaf24@9878 850 BUILD_BUG_ON(__HYPERVISOR_VIRT_END != HYPERVISOR_VIRT_END);
kaf24@8521 851 #endif
kfraser@10492 852 BUILD_BUG_ON(MACH2PHYS_VIRT_START != RO_MPT_VIRT_START);
kfraser@10492 853 BUILD_BUG_ON(MACH2PHYS_VIRT_END != RO_MPT_VIRT_END);
kaf24@8521 854
kaf24@3354 855 init_frametable();
kaf24@3338 856
kfraser@11971 857 acpi_boot_table_init();
kfraser@11971 858
kfraser@11971 859 acpi_numa_init();
kfraser@11971 860
kfraser@11971 861 numa_initmem_init(0, max_page);
kfraser@11971 862
keir@19055 863 #if defined(CONFIG_X86_32)
keir@19055 864 /* Initialise the Xen heap. */
keir@19061 865 init_xenheap_pages(xenheap_initial_phys_start, xenheap_phys_end);
keir@19061 866 nr_pages = (xenheap_phys_end - xenheap_initial_phys_start) >> PAGE_SHIFT;
kaf24@6111 867 printk("Xen heap: %luMB (%lukB)\n",
kaf24@6111 868 nr_pages >> (20 - PAGE_SHIFT),
kaf24@6111 869 nr_pages << (PAGE_SHIFT - 10));
keir@19055 870 #endif
kaf24@3338 871
keir@14680 872 end_boot_allocator();
keir@19055 873 early_boot = 0;
keir@14680 874
keir@19055 875 #if defined(CONFIG_X86_64)
keir@19055 876 vesa_init();
keir@19055 877 #endif
kaf24@3338 878
keir@17444 879 softirq_init();
keir@17444 880
kaf24@8459 881 early_cpu_init();
kaf24@8459 882
kaf24@8459 883 paging_init();
kaf24@8459 884
keir@16274 885 tboot_probe();
keir@16274 886
kaf24@8459 887 /* Unmap the first page of CPU0's stack. */
kaf24@8459 888 memguard_guard_stack(cpu0_stack);
kaf24@8459 889
kaf24@8459 890 open_softirq(NEW_TLBFLUSH_CLOCK_PERIOD_SOFTIRQ, new_tlbflush_clock_period);
kaf24@8459 891
kaf24@8459 892 if ( opt_watchdog )
kaf24@8459 893 nmi_watchdog = NMI_LOCAL_APIC;
kaf24@8459 894
kaf24@8459 895 sort_exception_tables();
kaf24@8459 896
kaf24@8459 897 find_smp_config();
kaf24@8459 898
kaf24@8459 899 dmi_scan_machine();
kaf24@8459 900
kaf24@8459 901 generic_apic_probe();
kaf24@8459 902
keir@17552 903 if ( x2apic_is_available() )
keir@17552 904 enable_x2apic();
keir@17552 905
kaf24@8459 906 acpi_boot_init();
kaf24@8459 907
kfraser@11971 908 init_cpu_to_node();
kfraser@11971 909
kfraser@11241 910 if ( smp_found_config )
kaf24@8459 911 get_smp_config();
kaf24@8459 912
keir@15083 913 #ifdef CONFIG_X86_64
keir@15083 914 /* Low mappings were only needed for some BIOS table parsing. */
keir@15083 915 zap_low_mappings();
keir@15083 916 #endif
keir@15083 917
kaf24@8459 918 init_apic_mappings();
kaf24@8459 919
kaf24@8459 920 init_IRQ();
kaf24@8459 921
kfraser@11241 922 percpu_init_areas();
kfraser@11241 923
kfraser@15815 924 xsm_init(&initrdidx, mbi, initial_images_start);
kfraser@15815 925
kfraser@11240 926 init_idle_domain();
kfraser@11240 927
kaf24@8459 928 trap_init();
kaf24@8459 929
kaf24@13662 930 rcu_init();
kaf24@13662 931
kaf24@8586 932 timer_init();
kaf24@8459 933
kaf24@8459 934 early_time_init();
kaf24@8459 935
kaf24@8459 936 arch_init_memory();
kaf24@8459 937
kaf24@8459 938 identify_cpu(&boot_cpu_data);
kaf24@8459 939 if ( cpu_has_fxsr )
kaf24@8459 940 set_in_cr4(X86_CR4_OSFXSR);
kaf24@8459 941 if ( cpu_has_xmm )
kaf24@8459 942 set_in_cr4(X86_CR4_OSXMMEXCPT);
keir@18920 943
keir@18920 944 local_irq_enable();
keir@18920 945
kfraser@15747 946 #ifdef CONFIG_X86_64
kfraser@15747 947 vesa_mtrr_init();
kfraser@15747 948 #endif
kaf24@8459 949
kaf24@8459 950 if ( opt_nosmp )
kaf24@8459 951 max_cpus = 0;
kaf24@8459 952
kaf24@8459 953 smp_prepare_cpus(max_cpus);
kaf24@8459 954
keir@18920 955 spin_debug_enable();
keir@18920 956
kaf24@8459 957 /*
kaf24@8459 958 * Initialise higher-level timer functions. We do this fairly late
kaf24@8459 959 * (post-SMP) because the time bases and scale factors need to be updated
kaf24@8459 960 * regularly, and SMP initialisation can cause a long delay with
kaf24@8459 961 * interrupts not yet enabled.
kaf24@8459 962 */
kaf24@8459 963 init_xen_time();
kaf24@8459 964
kaf24@8459 965 initialize_keytable();
kaf24@8459 966
keir@19543 967 console_init_postirq();
kaf24@8459 968
kaf24@8459 969 for_each_present_cpu ( i )
kaf24@8459 970 {
kaf24@8459 971 if ( num_online_cpus() >= max_cpus )
kaf24@8459 972 break;
kaf24@8459 973 if ( !cpu_online(i) )
kaf24@13662 974 {
kaf24@13662 975 rcu_online_cpu(i);
kaf24@8459 976 __cpu_up(i);
kaf24@13662 977 }
kfraser@11971 978
kfraser@11998 979 /* Set up cpu_to_node[]. */
kfraser@11971 980 srat_detect_node(i);
kfraser@11998 981 /* Set up node_to_cpumask based on cpu_to_node[]. */
kfraser@11971 982 numa_add_cpu(i);
kaf24@8459 983 }
kaf24@8459 984
kaf24@8459 985 printk("Brought up %ld CPUs\n", (long)num_online_cpus());
kaf24@8459 986 smp_cpus_done(max_cpus);
kaf24@8459 987
kaf24@9117 988 initialise_gdb(); /* could be moved earlier */
kaf24@9117 989
kaf24@8459 990 do_initcalls();
kaf24@8459 991
kaf24@8594 992 if ( opt_watchdog )
kaf24@8594 993 watchdog_enable();
keir@19259 994
keir@19259 995 if ( !tboot_protect_mem_regions() )
keir@19259 996 panic("Could not protect TXT memory regions\n");
kaf24@8459 997
kaf24@8459 998 /* Create initial domain 0. */
keir@19266 999 dom0 = domain_create(0, DOMCRF_s3_integrity, DOM0_SSIDREF);
kfraser@10655 1000 if ( (dom0 == NULL) || (alloc_vcpu(dom0, 0, 0) == NULL) )
kaf24@8459 1001 panic("Error creating domain 0\n");
kaf24@8459 1002
kfraser@12210 1003 dom0->is_privileged = 1;
keir@16856 1004 dom0->target = NULL;
kfraser@12210 1005
kaf24@8459 1006 /* Grab the DOM0 command line. */
kaf24@8459 1007 cmdline = (char *)(mod[0].string ? __va(mod[0].string) : NULL);
kfraser@15426 1008 if ( (cmdline != NULL) || (kextra != NULL) )
kaf24@8459 1009 {
kaf24@8459 1010 static char dom0_cmdline[MAX_GUEST_CMDLINE];
kaf24@8459 1011
kfraser@15796 1012 cmdline = cmdline_cook(cmdline);
kfraser@15796 1013 safe_strcpy(dom0_cmdline, cmdline);
kaf24@8459 1014
kfraser@15426 1015 if ( kextra != NULL )
kfraser@15426 1016 /* kextra always includes exactly one leading space. */
kfraser@15426 1017 safe_strcat(dom0_cmdline, kextra);
kfraser@15426 1018
kaf24@8459 1019 /* Append any extra parameters. */
kfraser@13691 1020 if ( skip_ioapic_setup && !strstr(dom0_cmdline, "noapic") )
kfraser@13691 1021 safe_strcat(dom0_cmdline, " noapic");
kaf24@8459 1022 if ( acpi_skip_timer_override &&
kfraser@13691 1023 !strstr(dom0_cmdline, "acpi_skip_timer_override") )
kfraser@13691 1024 safe_strcat(dom0_cmdline, " acpi_skip_timer_override");
keir@16165 1025 if ( (strlen(acpi_param) == 0) && acpi_disabled )
keir@16165 1026 {
keir@16165 1027 printk("ACPI is disabled, notifying Domain 0 (acpi=off)\n");
keir@16165 1028 safe_strcpy(acpi_param, "off");
keir@16165 1029 }
kfraser@13691 1030 if ( (strlen(acpi_param) != 0) && !strstr(dom0_cmdline, "acpi=") )
kaf24@8459 1031 {
kfraser@13691 1032 safe_strcat(dom0_cmdline, " acpi=");
kfraser@13691 1033 safe_strcat(dom0_cmdline, acpi_param);
kaf24@8459 1034 }
kfraser@13691 1035
kfraser@13691 1036 cmdline = dom0_cmdline;
kaf24@8459 1037 }
kaf24@8459 1038
kaf24@8459 1039 if ( (initrdidx > 0) && (initrdidx < mbi->mods_count) )
kaf24@8459 1040 {
keir@19544 1041 _initrd_start = mod[initrdidx].mod_start;
kaf24@8459 1042 _initrd_len = mod[initrdidx].mod_end - mod[initrdidx].mod_start;
kaf24@8459 1043 }
kaf24@8459 1044
keir@18180 1045 if ( xen_cpuidle )
keir@18180 1046 xen_processor_pmbits |= XEN_PROCESSOR_PM_CX;
keir@18180 1047
kaf24@8459 1048 /*
kaf24@8459 1049 * We're going to setup domain0 using the module(s) that we stashed safely
kaf24@8459 1050 * above our heap. The second module, if present, is an initrd ramdisk.
kaf24@8459 1051 */
kaf24@8459 1052 if ( construct_dom0(dom0,
keir@19076 1053 initial_images_base,
keir@19076 1054 initial_images_start,
kaf24@8459 1055 mod[0].mod_end-mod[0].mod_start,
kaf24@8459 1056 _initrd_start,
kaf24@8459 1057 _initrd_len,
kaf24@8459 1058 cmdline) != 0)
kaf24@8459 1059 panic("Could not set up DOM0 guest OS\n");
kaf24@8459 1060
kaf24@8459 1061 /* Scrub RAM that is still free and so may go to an unprivileged domain. */
kaf24@8459 1062 scrub_heap_pages();
kaf24@8459 1063
kaf24@8459 1064 init_trace_bufs();
kaf24@8459 1065
kaf24@10502 1066 console_endboot();
kaf24@8459 1067
kaf24@8459 1068 /* Hide UART from DOM0 if we're using it */
kaf24@8459 1069 serial_endboot();
kaf24@8459 1070
kaf24@8459 1071 domain_unpause_by_systemcontroller(dom0);
kaf24@8459 1072
keir@15082 1073 reset_stack_and_jump(init_done);
kaf24@8459 1074 }
kaf24@8459 1075
ian@13763 1076 void arch_get_xen_caps(xen_capabilities_info_t *info)
iap10@6721 1077 {
kfraser@14997 1078 /* Interface name is always xen-3.0-* for Xen-3.x. */
kfraser@14997 1079 int major = 3, minor = 0;
keir@13754 1080 char s[32];
keir@13754 1081
ian@13763 1082 (*info)[0] = '\0';
iap10@6721 1083
keir@17618 1084 #if defined(CONFIG_X86_32)
kaf24@6725 1085
keir@13754 1086 snprintf(s, sizeof(s), "xen-%d.%d-x86_32p ", major, minor);
ian@13763 1087 safe_strcat(*info, s);
kaf24@6725 1088 if ( hvm_enabled )
iap10@6721 1089 {
keir@13754 1090 snprintf(s, sizeof(s), "hvm-%d.%d-x86_32 ", major, minor);
ian@13763 1091 safe_strcat(*info, s);
keir@13754 1092 snprintf(s, sizeof(s), "hvm-%d.%d-x86_32p ", major, minor);
ian@13763 1093 safe_strcat(*info, s);
iap10@6721 1094 }
iap10@6721 1095
kaf24@6725 1096 #elif defined(CONFIG_X86_64)
iap10@6721 1097
keir@13754 1098 snprintf(s, sizeof(s), "xen-%d.%d-x86_64 ", major, minor);
ian@13763 1099 safe_strcat(*info, s);
ack@13288 1100 #ifdef CONFIG_COMPAT
keir@13754 1101 snprintf(s, sizeof(s), "xen-%d.%d-x86_32p ", major, minor);
ian@13763 1102 safe_strcat(*info, s);
ack@13288 1103 #endif
kaf24@6725 1104 if ( hvm_enabled )
iap10@6721 1105 {
keir@13754 1106 snprintf(s, sizeof(s), "hvm-%d.%d-x86_32 ", major, minor);
ian@13763 1107 safe_strcat(*info, s);
keir@13754 1108 snprintf(s, sizeof(s), "hvm-%d.%d-x86_32p ", major, minor);
ian@13763 1109 safe_strcat(*info, s);
keir@13754 1110 snprintf(s, sizeof(s), "hvm-%d.%d-x86_64 ", major, minor);
ian@13763 1111 safe_strcat(*info, s);
iap10@6721 1112 }
kaf24@6725 1113
iap10@6721 1114 #endif
iap10@6721 1115 }
iap10@6721 1116
keir@17738 1117 int xen_in_range(paddr_t start, paddr_t end)
keir@17729 1118 {
keir@19283 1119 int i;
keir@19283 1120 static struct {
keir@19283 1121 paddr_t s, e;
keir@19568 1122 } xen_regions[4];
keir@19055 1123
keir@19283 1124 /* initialize first time */
keir@19283 1125 if ( !xen_regions[0].s )
keir@19283 1126 {
keir@19577 1127 extern char __init_begin[], __bss_start[];
keir@19283 1128 extern unsigned long allocator_bitmap_end;
keir@19283 1129
keir@19283 1130 /* S3 resume code (and other real mode trampoline code) */
keir@19283 1131 xen_regions[0].s = bootsym_phys(trampoline_start);
keir@19283 1132 xen_regions[0].e = bootsym_phys(trampoline_end);
keir@19283 1133 /* hypervisor code + data */
keir@19283 1134 xen_regions[1].s =__pa(&_stext);
keir@19283 1135 xen_regions[1].e = __pa(&__init_begin);
keir@19283 1136 /* per-cpu data */
keir@19283 1137 xen_regions[2].s = __pa(&__per_cpu_start);
keir@19577 1138 xen_regions[2].e = xen_regions[2].s +
keir@19577 1139 (((paddr_t)last_cpu(cpu_possible_map) + 1) << PERCPU_SHIFT);
keir@19283 1140 /* bss + boot allocator bitmap */
keir@19283 1141 xen_regions[3].s = __pa(&__bss_start);
keir@19283 1142 xen_regions[3].e = allocator_bitmap_end;
keir@19283 1143 }
keir@19283 1144
keir@19283 1145 for ( i = 0; i < ARRAY_SIZE(xen_regions); i++ )
keir@19283 1146 {
keir@19283 1147 if ( (start < xen_regions[i].e) && (end > xen_regions[i].s) )
keir@19283 1148 return 1;
keir@19283 1149 }
keir@19283 1150
keir@19283 1151 return 0;
keir@17729 1152 }
keir@17729 1153
kaf24@3914 1154 /*
kaf24@3914 1155 * Local variables:
kaf24@3914 1156 * mode: C
kaf24@3914 1157 * c-set-style: "BSD"
kaf24@3914 1158 * c-basic-offset: 4
kaf24@3914 1159 * tab-width: 4
kaf24@3914 1160 * indent-tabs-mode: nil
kaf24@3988 1161 * End:
kaf24@3914 1162 */