ia64/xen-unstable

view xen/arch/ia64/xen/xensetup.c @ 19543:81d6b5762c40

New option conring_size= to allow larger console ring.
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
author Keir Fraser <keir.fraser@citrix.com>
date Tue Apr 14 14:52:27 2009 +0100 (2009-04-14)
parents c4760d58ee6f
children 2f9e1348aa98
line source
1 /******************************************************************************
2 * xensetup.c
3 * Copyright (c) 2004-2005 Hewlett-Packard Co
4 * Dan Magenheimer <dan.magenheimer@hp.com>
5 */
7 #include <xen/config.h>
8 #include <xen/lib.h>
9 #include <xen/errno.h>
10 #include <xen/multiboot.h>
11 #include <xen/sched.h>
12 #include <xen/mm.h>
13 #include <public/version.h>
14 #include <xen/gdbstub.h>
15 #include <xen/version.h>
16 #include <xen/console.h>
17 #include <xen/domain.h>
18 #include <xen/serial.h>
19 #include <xen/trace.h>
20 #include <xen/keyhandler.h>
21 #include <xen/vga.h>
22 #include <asm/meminit.h>
23 #include <asm/page.h>
24 #include <asm/setup.h>
25 #include <asm/vhpt.h>
26 #include <xen/string.h>
27 #include <asm/vmx.h>
28 #include <linux/efi.h>
29 #include <asm/iosapic.h>
30 #include <xen/softirq.h>
31 #include <xen/rcupdate.h>
32 #include <xsm/acm/acm_hooks.h>
33 #include <asm/sn/simulator.h>
34 #include <asm/sal.h>
36 unsigned long total_pages;
38 char saved_command_line[COMMAND_LINE_SIZE];
39 char __initdata dom0_command_line[COMMAND_LINE_SIZE];
41 cpumask_t cpu_present_map;
43 extern unsigned long domain0_ready;
45 int find_max_pfn (unsigned long, unsigned long, void *);
47 /* FIXME: which header these declarations should be there ? */
48 extern void early_setup_arch(char **);
49 extern void late_setup_arch(char **);
50 extern void hpsim_serial_init(void);
51 extern void setup_per_cpu_areas(void);
52 extern void mem_init(void);
53 extern void init_IRQ(void);
54 extern void trap_init(void);
55 extern void xen_patch_kernel(void);
57 /* nosmp: ignore secondary processors */
58 static int __initdata opt_nosmp;
59 boolean_param("nosmp", opt_nosmp);
61 /* maxcpus: maximum number of CPUs to activate */
62 static unsigned int __initdata max_cpus = NR_CPUS;
63 integer_param("maxcpus", max_cpus);
65 /* xencons: toggle xenconsole input (and irq).
66 Note: you have to disable 8250 serials in domains (to avoid use of the
67 same resource). */
68 static int __initdata opt_xencons = 1;
69 integer_param("xencons", opt_xencons);
71 /* xencons_poll: toggle non-legacy xencons UARTs to run in polling mode */
72 static int __initdata opt_xencons_poll;
73 boolean_param("xencons_poll", opt_xencons_poll);
75 #define XENHEAP_DEFAULT_SIZE KERNEL_TR_PAGE_SIZE
76 #define XENHEAP_SIZE_MIN (16 * 1024 * 1024) /* 16MBytes */
77 unsigned long xenheap_size = XENHEAP_DEFAULT_SIZE;
78 unsigned long xen_pstart;
80 static int __init
81 xen_count_pages(u64 start, u64 end, void *arg)
82 {
83 unsigned long *count = arg;
85 /* FIXME: do we need consider difference between DMA-usable memory and
86 * normal memory? Seems that HV has no requirement to operate DMA which
87 * is owned by Dom0? */
88 *count += (end - start) >> PAGE_SHIFT;
89 return 0;
90 }
92 static void __init do_initcalls(void)
93 {
94 initcall_t *call;
95 for ( call = &__initcall_start; call < &__initcall_end; call++ )
96 (*call)();
97 }
99 /*
100 * IPF loader only supports one command line currently, for
101 * both xen and guest kernel. This function provides pre-parse
102 * to mixed command line, to split it into two parts.
103 *
104 * User should split the parameters by "--", with strings after
105 * spliter for guest kernel. Missing "--" means whole line belongs
106 * to guest. Example:
107 * "com2=57600,8n1 console=com2 -- console=ttyS1 console=tty
108 * root=/dev/sda3 ro"
109 */
110 static char null[4] = { 0 };
112 void __init early_cmdline_parse(char **cmdline_p)
113 {
114 char *guest_cmd;
115 static const char * const split = "--";
117 if (*cmdline_p == NULL) {
118 *cmdline_p = &null[0];
119 saved_command_line[0] = '\0';
120 dom0_command_line[0] = '\0';
121 return;
122 }
124 guest_cmd = strstr(*cmdline_p, split);
125 /* If no spliter, whole line is for guest */
126 if (guest_cmd == NULL) {
127 guest_cmd = *cmdline_p;
128 *cmdline_p = &null[0];
129 } else {
130 *guest_cmd = '\0'; /* Split boot parameters for xen and guest */
131 guest_cmd += strlen(split);
132 while (*guest_cmd == ' ') guest_cmd++;
133 }
135 strlcpy(saved_command_line, *cmdline_p, COMMAND_LINE_SIZE);
136 strlcpy(dom0_command_line, guest_cmd, COMMAND_LINE_SIZE);
137 return;
138 }
140 struct ns16550_defaults ns16550_com1 = {
141 .data_bits = 8,
142 .parity = 'n',
143 .stop_bits = 1
144 };
146 unsigned int ns16550_com1_gsi;
147 unsigned int ns16550_com1_polarity;
148 unsigned int ns16550_com1_trigger;
150 struct ns16550_defaults ns16550_com2 = {
151 .data_bits = 8,
152 .parity = 'n',
153 .stop_bits = 1
154 };
156 /* efi_print: print efi table at boot */
157 static int __initdata opt_efi_print;
158 boolean_param("efi_print", opt_efi_print);
160 /* print EFI memory map: */
161 static void __init
162 efi_print(void)
163 {
164 void *efi_map_start, *efi_map_end;
165 u64 efi_desc_size;
167 efi_memory_desc_t *md;
168 void *p;
169 int i;
171 if (!opt_efi_print)
172 return;
174 efi_map_start = __va(ia64_boot_param->efi_memmap);
175 efi_map_end = efi_map_start + ia64_boot_param->efi_memmap_size;
176 efi_desc_size = ia64_boot_param->efi_memdesc_size;
178 for (i = 0, p = efi_map_start; p < efi_map_end; ++i, p += efi_desc_size) {
179 md = p;
180 printk("mem%02u: type=%2u, attr=0x%016lx, range=[0x%016lx-0x%016lx) "
181 "(%luMB)\n", i, md->type, md->attribute, md->phys_addr,
182 md->phys_addr + (md->num_pages << EFI_PAGE_SHIFT),
183 md->num_pages >> (20 - EFI_PAGE_SHIFT));
184 }
185 }
187 /*
188 * These functions are utility functions for getting and
189 * testing memory descriptors for allocating the xenheap area.
190 */
191 static efi_memory_desc_t * __init
192 efi_get_md (unsigned long phys_addr)
193 {
194 void *efi_map_start, *efi_map_end, *p;
195 efi_memory_desc_t *md;
196 u64 efi_desc_size;
198 efi_map_start = __va(ia64_boot_param->efi_memmap);
199 efi_map_end = efi_map_start + ia64_boot_param->efi_memmap_size;
200 efi_desc_size = ia64_boot_param->efi_memdesc_size;
202 for (p = efi_map_start; p < efi_map_end; p += efi_desc_size) {
203 md = p;
204 if (phys_addr - md->phys_addr < (md->num_pages << EFI_PAGE_SHIFT))
205 return md;
206 }
207 return 0;
208 }
210 static int __init
211 is_xenheap_usable_memory(efi_memory_desc_t *md)
212 {
213 if (!(md->attribute & EFI_MEMORY_WB))
214 return 0;
216 switch (md->type) {
217 case EFI_LOADER_CODE:
218 case EFI_LOADER_DATA:
219 case EFI_BOOT_SERVICES_CODE:
220 case EFI_BOOT_SERVICES_DATA:
221 case EFI_CONVENTIONAL_MEMORY:
222 return 1;
223 }
224 return 0;
225 }
227 static inline int __init
228 md_overlaps(const efi_memory_desc_t *md, unsigned long phys_addr)
229 {
230 return (phys_addr - md->phys_addr < (md->num_pages << EFI_PAGE_SHIFT));
231 }
233 static inline int __init
234 md_overlap_with_boot_param(const efi_memory_desc_t *md)
235 {
236 return md_overlaps(md, __pa(ia64_boot_param)) ||
237 md_overlaps(md, ia64_boot_param->efi_memmap) ||
238 md_overlaps(md, ia64_boot_param->command_line);
239 }
241 #define MD_SIZE(md) (md->num_pages << EFI_PAGE_SHIFT)
242 #define MD_END(md) ((md)->phys_addr + MD_SIZE(md))
244 static unsigned long __init
245 efi_get_max_addr (void)
246 {
247 void *efi_map_start, *efi_map_end, *p;
248 efi_memory_desc_t *md;
249 u64 efi_desc_size;
250 unsigned long max_addr = 0;
252 efi_map_start = __va(ia64_boot_param->efi_memmap);
253 efi_map_end = efi_map_start + ia64_boot_param->efi_memmap_size;
254 efi_desc_size = ia64_boot_param->efi_memdesc_size;
256 for (p = efi_map_start; p < efi_map_end; p += efi_desc_size) {
257 md = p;
258 if (is_xenheap_usable_memory(md) && MD_END(md) > max_addr)
259 max_addr = MD_END(md);
260 }
261 return max_addr;
262 }
264 extern char __init_begin[], __init_end[];
265 static void noinline init_done(void)
266 {
267 memset(__init_begin, 0, __init_end - __init_begin);
268 flush_icache_range((unsigned long)__init_begin, (unsigned long)__init_end);
269 init_xenheap_pages(__pa(__init_begin), __pa(__init_end));
270 printk("Freed %ldkB init memory.\n",
271 (long)(__init_end-__init_begin)>>10);
273 startup_cpu_idle_loop();
274 }
276 struct xen_heap_desc {
277 void* xen_heap_start;
278 unsigned long xenheap_phys_end;
279 efi_memory_desc_t* kern_md;
280 };
282 static int __init
283 init_xenheap_mds(unsigned long start, unsigned long end, void *arg)
284 {
285 struct xen_heap_desc *desc = (struct xen_heap_desc*)arg;
286 unsigned long md_end = __pa(desc->xen_heap_start);
287 efi_memory_desc_t* md;
289 start = __pa(start);
290 end = __pa(end);
292 for (md = efi_get_md(md_end);
293 md != NULL && md->phys_addr < desc->xenheap_phys_end;
294 md = efi_get_md(md_end)) {
295 md_end = MD_END(md);
297 if (md == desc->kern_md ||
298 (md->type == EFI_LOADER_DATA && !md_overlap_with_boot_param(md)) ||
299 ((md->attribute & EFI_MEMORY_WB) &&
300 is_xenheap_usable_memory(md))) {
301 unsigned long s = max(start, max(__pa(desc->xen_heap_start),
302 md->phys_addr));
303 unsigned long e = min(end, min(md_end, desc->xenheap_phys_end));
304 init_boot_pages(s, e);
305 }
306 }
308 return 0;
309 }
311 int running_on_sim;
313 static int __init
314 is_platform_hp_ski(void)
315 {
316 int i;
317 long cpuid[6];
319 for (i = 0; i < 5; ++i)
320 cpuid[i] = ia64_get_cpuid(i);
322 if ((cpuid[0] & 0xff) != 'H')
323 return 0;
324 if ((cpuid[3] & 0xff) != 0x4)
325 return 0;
326 if (((cpuid[3] >> 8) & 0xff) != 0x0)
327 return 0;
328 if (((cpuid[3] >> 16) & 0xff) != 0x0)
329 return 0;
330 if (((cpuid[3] >> 24) & 0x7) != 0x7)
331 return 0;
333 return 1;
334 }
336 #ifdef CONFIG_XEN_IA64_PERVCPU_VHPT
337 static int __initdata dom0_vhpt_size_log2;
338 integer_param("dom0_vhpt_size_log2", dom0_vhpt_size_log2);
339 #endif
340 unsigned long xen_fixed_mfn_start __read_mostly;
341 unsigned long xen_fixed_mfn_end __read_mostly;
343 void __init start_kernel(void)
344 {
345 char *cmdline;
346 unsigned long nr_pages;
347 unsigned long dom0_memory_start, dom0_memory_size;
348 unsigned long dom0_initrd_start, dom0_initrd_size;
349 unsigned long md_end, relo_start, relo_end, relo_size = 0;
350 struct domain *idle_domain;
351 struct vcpu *dom0_vcpu0;
352 efi_memory_desc_t *kern_md, *last_md, *md;
353 unsigned long xenheap_phys_end;
354 void *xen_heap_start;
355 struct xen_heap_desc heap_desc;
356 #ifdef CONFIG_SMP
357 int i;
358 #endif
360 /* Be sure the struct shared_info size is <= XSI_SIZE. */
361 BUILD_BUG_ON(sizeof(struct shared_info) > XSI_SIZE);
363 /* Kernel may be relocated by EFI loader */
364 xen_pstart = ia64_tpa(KERNEL_START);
366 running_on_sim = is_platform_hp_ski();
368 early_setup_arch(&cmdline);
370 /* We initialise the serial devices very early so we can get debugging. */
371 if (running_on_sim)
372 hpsim_serial_init();
373 else {
374 ns16550_init(0, &ns16550_com1);
375 ns16550_init(1, &ns16550_com2);
376 }
378 #ifdef CONFIG_VGA
379 /* Plug in a default VGA mode */
380 vga_console_info.video_type = XEN_VGATYPE_TEXT_MODE_3;
381 vga_console_info.u.text_mode_3.font_height = 16; /* generic VGA? */
382 vga_console_info.u.text_mode_3.cursor_x =
383 ia64_boot_param->console_info.orig_x;
384 vga_console_info.u.text_mode_3.cursor_y =
385 ia64_boot_param->console_info.orig_y;
386 vga_console_info.u.text_mode_3.rows =
387 ia64_boot_param->console_info.num_rows;
388 vga_console_info.u.text_mode_3.columns =
389 ia64_boot_param->console_info.num_cols;
390 #endif
392 console_init_preirq();
394 if (running_on_sim || ia64_boot_param->domain_start == 0 ||
395 ia64_boot_param->domain_size == 0) {
396 /* This is possible only with the old elilo, which does not support
397 a vmm. Fix now, and continue without initrd. */
398 printk ("Your elilo is not Xen-aware. Bootparams fixed\n");
399 ia64_boot_param->domain_start = ia64_boot_param->initrd_start;
400 ia64_boot_param->domain_size = ia64_boot_param->initrd_size;
401 ia64_boot_param->initrd_start = 0;
402 ia64_boot_param->initrd_size = 0;
403 }
405 printk("Xen command line: %s\n", saved_command_line);
407 /*
408 * Test if the boot allocator bitmap will overflow xenheap_size. If
409 * so, continue to bump it up until we have at least a minimum space
410 * for the actual xenheap.
411 */
412 max_page = efi_get_max_addr() >> PAGE_SHIFT;
413 while ((max_page >> 3) > xenheap_size - XENHEAP_SIZE_MIN)
414 xenheap_size <<= 1;
416 xenheap_phys_end = xen_pstart + xenheap_size;
417 printk("xen image pstart: 0x%lx, xenheap pend: 0x%lx\n",
418 xen_pstart, xenheap_phys_end);
420 xen_patch_kernel();
422 kern_md = md = efi_get_md(xen_pstart);
423 md_end = __pa(ia64_imva(&_end));
424 relo_start = xenheap_phys_end;
426 /*
427 * Scan through the memory descriptors after the kernel
428 * image to make sure we have enough room for the xenheap
429 * area, pushing out whatever may already be there.
430 */
431 while (relo_start + relo_size >= md_end) {
432 md = efi_get_md(md_end);
434 if (md == NULL) {
435 printk("no room to move loader data. skip moving loader data\n");
436 goto skip_move;
437 }
439 md_end = MD_END(md);
440 if (relo_start < md->phys_addr)
441 relo_start = md->phys_addr;
443 if (!is_xenheap_usable_memory(md)) {
444 /* Skip this area */
445 if (md_end > relo_start)
446 relo_start = md_end;
447 continue;
448 }
450 /*
451 * The dom0 kernel or initrd could overlap, reserve space
452 * at the end to relocate them later.
453 */
454 if (md->type == EFI_LOADER_DATA) {
455 /* Test for ranges we're not prepared to move */
456 if (!md_overlap_with_boot_param(md))
457 relo_size += MD_SIZE(md);
459 /* If range overlaps the end, push out the relocation start */
460 if (md_end > relo_start)
461 relo_start = md_end;
462 }
463 }
464 last_md = md;
465 relo_start = md_end - relo_size;
466 relo_end = relo_start + relo_size;
468 md_end = __pa(ia64_imva(&_end));
470 /*
471 * Move any relocated data out into the previously found relocation
472 * area. Any extra memory descriptrs are moved out to the end
473 * and set to zero pages.
474 */
475 for (md = efi_get_md(md_end) ;; md = efi_get_md(md_end)) {
476 md_end = MD_END(md);
478 if (md->type == EFI_LOADER_DATA && !md_overlap_with_boot_param(md)) {
479 unsigned long relo_offset;
481 if (md_overlaps(md, ia64_boot_param->domain_start)) {
482 relo_offset = ia64_boot_param->domain_start - md->phys_addr;
483 printk("Moving Dom0 kernel image: 0x%lx -> 0x%lx (%ld KiB)\n",
484 ia64_boot_param->domain_start, relo_start + relo_offset,
485 ia64_boot_param->domain_size >> 10);
486 ia64_boot_param->domain_start = relo_start + relo_offset;
487 }
488 if (ia64_boot_param->initrd_size &&
489 md_overlaps(md, ia64_boot_param->initrd_start)) {
490 relo_offset = ia64_boot_param->initrd_start - md->phys_addr;
491 printk("Moving Dom0 initrd image: 0x%lx -> 0x%lx (%ld KiB)\n",
492 ia64_boot_param->initrd_start, relo_start + relo_offset,
493 ia64_boot_param->initrd_size >> 10);
494 ia64_boot_param->initrd_start = relo_start + relo_offset;
495 }
496 memcpy(__va(relo_start), __va(md->phys_addr), MD_SIZE(md));
497 relo_start += MD_SIZE(md);
498 }
500 if (md == last_md)
501 break;
502 }
504 /* Trim the last entry */
505 md->num_pages -= (relo_size >> EFI_PAGE_SHIFT);
507 skip_move:
508 reserve_memory();
510 /* first find highest page frame number */
511 max_page = 0;
512 efi_memmap_walk(find_max_pfn, &max_page);
513 printk("find_memory: efi_memmap_walk returns max_page=%lx\n",max_page);
514 efi_print();
516 xen_heap_start = memguard_init(ia64_imva(&_end));
517 printk("Before xen_heap_start: %p\n", xen_heap_start);
518 xen_heap_start = __va(init_boot_allocator(__pa(xen_heap_start)));
519 printk("After xen_heap_start: %p\n", xen_heap_start);
521 efi_memmap_walk(filter_rsvd_memory, init_boot_pages);
522 efi_memmap_walk(xen_count_pages, &nr_pages);
524 printk("System RAM: %luMB (%lukB)\n",
525 nr_pages >> (20 - PAGE_SHIFT),
526 nr_pages << (PAGE_SHIFT - 10));
527 total_pages = nr_pages;
529 init_frametable();
531 trap_init();
533 /* process SAL system table */
534 /* must be before any pal/sal call */
535 BUG_ON(efi.sal_systab == EFI_INVALID_TABLE_ADDR);
536 ia64_sal_init(__va(efi.sal_systab));
538 /* early_setup_arch() maps PAL code. */
539 identify_vmx_feature();
540 /* If vmx feature is on, do necessary initialization for vmx */
541 if (vmx_enabled)
542 xen_heap_start = vmx_init_env(xen_heap_start, xenheap_phys_end);
544 /* allocate memory for percpu area
545 * per_cpu_init() called from late_set_arch() is called after
546 * end_boot_allocate(). It's too late to allocate memory in
547 * xenva.
548 */
549 xen_heap_start = per_cpu_allocate(xen_heap_start, xenheap_phys_end);
551 heap_desc.xen_heap_start = xen_heap_start;
552 heap_desc.xenheap_phys_end = xenheap_phys_end;
553 heap_desc.kern_md = kern_md;
554 efi_memmap_walk(&init_xenheap_mds, &heap_desc);
556 printk("Xen heap: %luMB (%lukB)\n",
557 (xenheap_phys_end-__pa(xen_heap_start)) >> 20,
558 (xenheap_phys_end-__pa(xen_heap_start)) >> 10);
560 /* for is_xen_fixed_mfn() */
561 xen_fixed_mfn_start = virt_to_mfn(&_start);
562 xen_fixed_mfn_end = virt_to_mfn(xen_heap_start);
564 end_boot_allocator();
566 softirq_init();
568 late_setup_arch(&cmdline);
570 scheduler_init();
571 idle_vcpu[0] = (struct vcpu*) ia64_r13;
572 idle_domain = domain_create(IDLE_DOMAIN_ID, 0, 0);
573 if ( (idle_domain == NULL) || (alloc_vcpu(idle_domain, 0, 0) == NULL) )
574 BUG();
576 alloc_dom_xen_and_dom_io();
577 setup_per_cpu_areas();
578 mem_init();
580 local_irq_disable();
581 init_IRQ ();
582 init_xen_time(); /* initialise the time */
583 timer_init();
585 rcu_init();
587 #ifdef CONFIG_XEN_IA64_TLBFLUSH_CLOCK
588 open_softirq(NEW_TLBFLUSH_CLOCK_PERIOD_SOFTIRQ, new_tlbflush_clock_period);
589 #endif
591 #ifdef CONFIG_SMP
592 if ( opt_nosmp )
593 {
594 max_cpus = 0;
595 smp_num_siblings = 1;
596 //boot_cpu_data.x86_num_cores = 1;
597 }
599 /* A vcpu is created for the idle domain on every physical cpu.
600 Limit the number of cpus to the maximum number of vcpus. */
601 if (max_cpus > MAX_VIRT_CPUS)
602 max_cpus = MAX_VIRT_CPUS;
604 smp_prepare_cpus(max_cpus);
606 /* We aren't hotplug-capable yet. */
607 for_each_cpu ( i )
608 cpu_set(i, cpu_present_map);
610 /* Enable IRQ to receive IPI (needed for ITC sync). */
611 local_irq_enable();
613 printk("num_online_cpus=%d, max_cpus=%d\n",num_online_cpus(),max_cpus);
614 for_each_present_cpu ( i )
615 {
616 if ( num_online_cpus() >= max_cpus )
617 break;
618 if ( !cpu_online(i) ) {
619 rcu_online_cpu(i);
620 __cpu_up(i);
621 }
622 }
624 local_irq_disable();
626 printk("Brought up %ld CPUs\n", (long)num_online_cpus());
627 smp_cpus_done(max_cpus);
628 #endif
630 initialise_gdb(); /* could be moved earlier */
632 do_initcalls();
633 sort_main_extable();
635 init_rid_allocator ();
637 local_irq_enable();
639 if (opt_xencons) {
640 initialize_keytable();
641 if (ns16550_com1_gsi) {
642 if (opt_xencons_poll ||
643 iosapic_register_intr(ns16550_com1_gsi,
644 ns16550_com1_polarity,
645 ns16550_com1_trigger) < 0) {
646 ns16550_com1.irq = 0;
647 ns16550_init(0, &ns16550_com1);
648 }
649 }
650 console_init_postirq();
651 }
653 expose_p2m_init();
655 /* Create initial domain 0. */
656 dom0 = domain_create(0, 0, DOM0_SSIDREF);
657 if (dom0 == NULL)
658 panic("Error creating domain 0\n");
659 domain_set_vhpt_size(dom0, dom0_vhpt_size_log2);
660 dom0_vcpu0 = alloc_vcpu(dom0, 0, 0);
661 if (dom0_vcpu0 == NULL || vcpu_late_initialise(dom0_vcpu0) != 0)
662 panic("Cannot allocate dom0 vcpu 0\n");
664 dom0->is_privileged = 1;
665 dom0->target = NULL;
667 /*
668 * We're going to setup domain0 using the module(s) that we stashed safely
669 * above our heap. The second module, if present, is an initrd ramdisk.
670 */
671 dom0_memory_start = (unsigned long) __va(ia64_boot_param->domain_start);
672 dom0_memory_size = ia64_boot_param->domain_size;
673 dom0_initrd_start = (unsigned long) __va(ia64_boot_param->initrd_start);
674 dom0_initrd_size = ia64_boot_param->initrd_size;
676 if ( construct_dom0(dom0, dom0_memory_start, dom0_memory_size,
677 dom0_initrd_start,dom0_initrd_size,
678 0) != 0)
679 panic("Could not set up DOM0 guest OS\n");
681 if (!running_on_sim && !IS_MEDUSA()) // slow on ski and pages are pre-initialized to zero
682 scrub_heap_pages();
684 init_trace_bufs();
686 if (opt_xencons) {
687 console_endboot();
688 serial_endboot();
689 }
691 domain0_ready = 1;
693 domain_unpause_by_systemcontroller(dom0);
695 init_done();
696 }
698 void arch_get_xen_caps(xen_capabilities_info_t *info)
699 {
700 /* Interface name is always xen-3.0-* for Xen-3.x. */
701 int major = 3, minor = 0;
702 char s[32];
704 (*info)[0] = '\0';
706 snprintf(s, sizeof(s), "xen-%d.%d-ia64 ", major, minor);
707 safe_strcat(*info, s);
709 snprintf(s, sizeof(s), "xen-%d.%d-ia64be ", major, minor);
710 safe_strcat(*info, s);
712 if (vmx_enabled)
713 {
714 snprintf(s, sizeof(s), "hvm-%d.%d-ia64 ", major, minor);
715 safe_strcat(*info, s);
717 snprintf(s, sizeof(s), "hvm-%d.%d-ia64-sioemu ", major, minor);
718 safe_strcat(*info, s);
719 }
720 }
722 int xen_in_range(paddr_t start, paddr_t end)
723 {
724 paddr_t xs = __pa(&_start);
725 paddr_t xe = __pa(&_end);
727 return (start < xe) && (end > xs);
728 }