void setup_arch(void) {
setup_memory_map();
finish_e820_parsing();
max_pfn = e820_end_of_ram_pfn();
/* preallocate 4k for mptable mpc */
/*
early_reserve_e820_mpc_new();
*/
/* update e820 for memory not covered by WB MTRRs */
/*
mtrr_bp_init();
if (mtrr_trim_uncached_memory(max_pfn)) {
max_pfn = e820_end_of_ram_pfn();
}
*/
/* max_low_pfn get updated here */
find_low_pfn_range();
printk(KERN_DEBUG "initial memory mapped : 0 - %08lx\n",
max_pfn_mapped<<PAGE_SHIFT);
max_low_pfn_mapped = init_memory_mapping(0, max_low_pfn<<PAGE_SHIFT);
max_pfn_mapped = max_low_pfn_mapped;
initmem_init(0, max_pfn);
}
void __init init()
{
e820map.setup();
lowmem::init();
gdt.init();
init_memory_mapping();
//idt.init();
apic.init();
acpi::init();
io_apic.init();
//init_processors();
////copy_ap_startup_code();
//init_percpu_section();
}
void __iomem *__init efi_ioremap(unsigned long phys_addr, unsigned long size,
u32 type)
{
unsigned long last_map_pfn;
if (type == EFI_MEMORY_MAPPED_IO)
return ioremap(phys_addr, size);
last_map_pfn = init_memory_mapping(phys_addr, phys_addr + size);
if ((last_map_pfn << PAGE_SHIFT) < phys_addr + size)
return NULL;
return (void __iomem *)__va(phys_addr);
}
/*
* Memory is added always to NORMAL zone. This means you will never get
* additional DMA/DMA32 memory.
*/
int arch_add_memory(int nid, u64 start, u64 size)
{
struct pglist_data *pgdat = NODE_DATA(nid);
struct zone *zone = pgdat->node_zones + ZONE_NORMAL;
unsigned long start_pfn = start >> PAGE_SHIFT;
unsigned long nr_pages = size >> PAGE_SHIFT;
int ret;
init_memory_mapping(start, (start + size -1));
ret = __add_pages(zone, start_pfn, nr_pages);
if (ret)
goto error;
return ret;
error:
printk("%s: Problem encountered in __add_pages!\n", __func__);
return ret;
}
void __iomem *__init efi_ioremap(unsigned long phys_addr, unsigned long size,
u32 type, u64 attribute)
{
unsigned long last_map_pfn;
if (type == EFI_MEMORY_MAPPED_IO)
return ioremap(phys_addr, size);
last_map_pfn = init_memory_mapping(phys_addr, phys_addr + size);
if ((last_map_pfn << PAGE_SHIFT) < phys_addr + size) {
unsigned long top = last_map_pfn << PAGE_SHIFT;
efi_ioremap(top, size - (top - phys_addr), type, attribute);
}
if (!(attribute & EFI_MEMORY_WB))
efi_memory_uc((u64)(unsigned long)__va(phys_addr), size);
return (void __iomem *)__va(phys_addr);
}
void init_prog(t_tissue_stack *t) {
t->plug_actions = plug_actions_from_external_plugin;
t->percent_init = percent_init_direct;
t->percent_add = percent_add_direct;
t->percent_get = percent_get_direct;
t->percent_cancel = percent_cancel_direct;
t->is_percent_paused_cancel = is_percent_paused_cancel;
t->clean_pause_queue = clean_pause_queue;
t->percent_pause = percent_pause_direct;
t->percent_resume = percent_resume_direct;
t->tasks = malloc(sizeof(*t->tasks));
t->tasks->f = NULL;
t->tasks->add_to_queue = task_add_queue;
t->tasks->path = strdup(CONCAT_APP_PATH("tasks/general"));
t->tasks->path_tmp = strdup(CONCAT_APP_PATH("tasks/general.tmp"));
t->tasks->is_running = FALSE;
pthread_mutex_init(&t->tasks->mutex, NULL);
pthread_mutex_init(&t->tasks->queue_mutex, NULL);
t->tile_requests = malloc(sizeof(*t->tile_requests));
init_tile_requests(t->tile_requests);
t->memory_mappings = NULL;
#ifdef USE_MM
t->memory_mappings = malloc(sizeof(*t->memory_mappings));
init_memory_mapping(t->memory_mappings);
#endif
t->get_volume = get_volume;
t->check_volume = check_volume;
t->clean_quit = clean_quit;
t->first = NULL;
t->first_notification = NULL;
pthread_cond_init(&t->main_cond, NULL);
pthread_mutex_init(&t->main_mutex, NULL);
nc_create_notification("log_debug", lc_debug, t);
nc_create_notification("log_info", lc_info, t);
nc_create_notification("log_warning", lc_warning, t);
nc_create_notification("log_error", lc_error, t);
nc_create_notification("log_fatal", lc_fatal, t);
t->create_notification = nc_create_notification;
t->subscribe = nc_subscribe;
t->raise = nc_raise;
t->log = malloc(sizeof(*t->log));
t->log->state = ON;
t->log->path = strdup(CONCAT_APP_PATH("logs/"));
#ifndef _TSS_DEBUG_
t->log->debug = OFF;
t->log->verbose = OFF;
#else
t->log->debug = ON;
t->log->verbose = ON;
#endif
t->log->write_on_files = ON;
t->log->write_on_plug_files = OFF;
t->log->write_on_level_files = ON;
log_plugin.id = pthread_self();
log_plugin.tss = t;
if (t->log->state) {
// make sure directory exists !
t_string_buffer * actualPath = createDirectory(t->log->path, 0766);
// couldn't create directory
if (actualPath == NULL) {
ERROR("Couldn't create %s", t->log->path);
t->log->state = OFF; // turn logging off
} else {
//path = concat_path(actualPath->buffer, "tss-general", ".log");
free_t_string_buffer(actualPath);
}
}
init_func_ptr(t);
init_percent_time(t, strdup(CONCAT_APP_PATH("tasks/")));
}
void __init setup_arch(char **cmdline_p)
{
printk(KERN_INFO "Command line: %s\n", saved_command_line);
ROOT_DEV = old_decode_dev(ORIG_ROOT_DEV);
screen_info = SCREEN_INFO;
edid_info = EDID_INFO;
saved_video_mode = SAVED_VIDEO_MODE;
bootloader_type = LOADER_TYPE;
#ifdef CONFIG_BLK_DEV_RAM
rd_image_start = RAMDISK_FLAGS & RAMDISK_IMAGE_START_MASK;
rd_prompt = ((RAMDISK_FLAGS & RAMDISK_PROMPT_FLAG) != 0);
rd_doload = ((RAMDISK_FLAGS & RAMDISK_LOAD_FLAG) != 0);
#endif
#ifdef CONFIG_EFI
if (!strncmp(EFI_LOADER_SIG, "EFIL", 4))
efi_enabled = 1;
#endif
setup_memory_region();
copy_edd();
if (!MOUNT_ROOT_RDONLY)
root_mountflags &= ~MS_RDONLY;
init_mm.start_code = (unsigned long) &_text;
init_mm.end_code = (unsigned long) &_etext;
init_mm.end_data = (unsigned long) &_edata;
init_mm.brk = (unsigned long) &_end;
init_mm.pgd = __va(__pa_symbol(&init_level4_pgt));
code_resource.start = __pa_symbol(&_text);
code_resource.end = __pa_symbol(&_etext)-1;
data_resource.start = __pa_symbol(&_etext);
data_resource.end = __pa_symbol(&_edata)-1;
parse_cmdline_early(cmdline_p);
finish_e820_parsing();
early_identify_cpu(&boot_cpu_data);
/*
* partially used pages are not usable - thus
* we are rounding upwards:
*/
end_pfn = e820_end_of_ram();
num_physpages = end_pfn; /* for pfn_valid */
check_efer();
discover_ebda();
init_memory_mapping(0, (end_pfn_map << PAGE_SHIFT));
if (efi_enabled)
efi_map_memmap();
dmi_scan_machine();
/*
* VMware detection requires dmi to be available, so this
* needs to be done after dmi_scan_machine, for the BP.
*/
init_hypervisor(&boot_cpu_data);
/*
* init_hypervisor gets called more than one time throughout
* the life of the cpu, but that hurts kvm. We only need it
* once, so we do it explicitly here
*/
if (boot_cpu_data.x86_hyper_vendor == X86_HYPER_VENDOR_KVM)
kvmclock_init();
#ifdef CONFIG_ACPI
/*
* Initialize the ACPI boot-time table parser (gets the RSDP and SDT).
* Call this early for SRAT node setup.
*/
acpi_boot_table_init();
#endif
#ifdef CONFIG_ACPI_NUMA
/*
* Parse SRAT to discover nodes.
*/
acpi_numa_init();
#endif
#ifdef CONFIG_NUMA
numa_initmem_init(0, end_pfn);
#else
contig_initmem_init(0, end_pfn);
#endif
/* Reserve direct mapping */
reserve_bootmem_generic(table_start << PAGE_SHIFT,
(table_end - table_start) << PAGE_SHIFT,
BOOTMEM_DEFAULT);
/* reserve kernel */
reserve_bootmem_generic(__pa_symbol(&_text),
__pa_symbol(&_end) - __pa_symbol(&_text),
BOOTMEM_DEFAULT);
/*
* reserve physical page 0 - it's a special BIOS page on many boxes,
* enabling clean reboots, SMP operation, laptop functions.
*/
reserve_bootmem_generic(0, PAGE_SIZE, BOOTMEM_DEFAULT);
/* reserve ebda region */
if (ebda_addr)
reserve_bootmem_generic(ebda_addr, ebda_size,
BOOTMEM_DEFAULT);
#ifdef CONFIG_SMP
/* Reserve SMP trampoline */
reserve_bootmem_generic(SMP_TRAMPOLINE_BASE, 2*PAGE_SIZE,
BOOTMEM_DEFAULT);
#endif
#ifdef CONFIG_ACPI_SLEEP
/*
* Reserve low memory region for sleep support.
*/
acpi_reserve_bootmem();
#endif
#ifdef CONFIG_X86_LOCAL_APIC
/*
* Find and reserve possible boot-time SMP configuration:
*/
find_smp_config();
#endif
#ifdef CONFIG_BLK_DEV_INITRD
if (LOADER_TYPE && INITRD_START) {
if (INITRD_START + INITRD_SIZE <= (end_pfn << PAGE_SHIFT)) {
reserve_bootmem_generic(INITRD_START, INITRD_SIZE,
BOOTMEM_DEFAULT);
initrd_start =
INITRD_START ? INITRD_START + PAGE_OFFSET : 0;
initrd_end = initrd_start+INITRD_SIZE;
}
else {
printk(KERN_ERR "initrd extends beyond end of memory "
"(0x%08lx > 0x%08lx)\ndisabling initrd\n",
(unsigned long)(INITRD_START + INITRD_SIZE),
(unsigned long)(end_pfn << PAGE_SHIFT));
initrd_start = 0;
}
}
#endif
#ifdef CONFIG_KEXEC
if ((crashk_res.start < crashk_res.end) &&
(crashk_res.end <= (end_pfn << PAGE_SHIFT))) {
if (reserve_bootmem_generic(crashk_res.start,
crashk_res.end - crashk_res.start + 1,
BOOTMEM_EXCLUSIVE) < 0) {
printk(KERN_ERR "crashkernel reservation failed - "
"memory is in use\n");
crashk_res.start = crashk_res.end = 0;
}
}
else {
printk(KERN_ERR "Memory for crash kernel (0x%lx to 0x%lx) not"
"within permissible range\ndisabling kdump\n",
crashk_res.start, crashk_res.end);
crashk_res.end = 0;
crashk_res.start = 0;
}
#endif
reserve_ibft_region();
paging_init();
check_ioapic();
/*
* set this early, so we dont allocate cpu0
* if MADT list doesnt list BSP first
* mpparse.c/MP_processor_info() allocates logical cpu numbers.
*/
cpu_set(0, cpu_present_map);
#ifdef CONFIG_ACPI
/*
* Read APIC and some other early information from ACPI tables.
*/
acpi_boot_init();
#endif
init_cpu_to_node();
#ifdef CONFIG_X86_LOCAL_APIC
/*
* get boot-time SMP configuration:
*/
if (smp_found_config)
get_smp_config();
init_apic_mappings();
#endif
/*
* Request address space for all standard RAM and ROM resources
* and also for regions reported as reserved by the e820.
*/
probe_roms();
e820_reserve_resources();
e820_mark_nosave_regions();
request_resource(&iomem_resource, &video_ram_resource);
{
unsigned i;
/* request I/O space for devices used on all i[345]86 PCs */
for (i = 0; i < STANDARD_IO_RESOURCES; i++)
request_resource(&ioport_resource, &standard_io_resources[i]);
}
e820_setup_gap();
#ifdef CONFIG_VT
#if defined(CONFIG_VGA_CONSOLE)
if (!efi_enabled || (efi_mem_type(0xa0000) != EFI_CONVENTIONAL_MEMORY))
conswitchp = &vga_con;
#elif defined(CONFIG_DUMMY_CONSOLE)
conswitchp = &dummy_con;
#endif
#endif
}
void __init setup_arch(char **cmdline_p)
{
unsigned long kernel_end;
#if defined(CONFIG_XEN_PRIVILEGED_GUEST)
struct e820entry *machine_e820;
struct xen_memory_map memmap;
#endif
#ifdef CONFIG_XEN
/* Register a call for panic conditions. */
atomic_notifier_chain_register(&panic_notifier_list, &xen_panic_block);
ROOT_DEV = MKDEV(RAMDISK_MAJOR,0);
kernel_end = 0; /* dummy */
screen_info = SCREEN_INFO;
if (xen_start_info->flags & SIF_INITDOMAIN) {
/* This is drawn from a dump from vgacon:startup in
* standard Linux. */
screen_info.orig_video_mode = 3;
screen_info.orig_video_isVGA = 1;
screen_info.orig_video_lines = 25;
screen_info.orig_video_cols = 80;
screen_info.orig_video_ega_bx = 3;
screen_info.orig_video_points = 16;
} else
screen_info.orig_video_isVGA = 0;
edid_info = EDID_INFO;
saved_video_mode = SAVED_VIDEO_MODE;
bootloader_type = LOADER_TYPE;
#ifdef CONFIG_BLK_DEV_RAM
rd_image_start = RAMDISK_FLAGS & RAMDISK_IMAGE_START_MASK;
rd_prompt = ((RAMDISK_FLAGS & RAMDISK_PROMPT_FLAG) != 0);
rd_doload = ((RAMDISK_FLAGS & RAMDISK_LOAD_FLAG) != 0);
#endif
setup_xen_features();
HYPERVISOR_vm_assist(VMASST_CMD_enable,
VMASST_TYPE_writable_pagetables);
ARCH_SETUP
#else
ROOT_DEV = old_decode_dev(ORIG_ROOT_DEV);
screen_info = SCREEN_INFO;
edid_info = EDID_INFO;
saved_video_mode = SAVED_VIDEO_MODE;
bootloader_type = LOADER_TYPE;
#ifdef CONFIG_BLK_DEV_RAM
rd_image_start = RAMDISK_FLAGS & RAMDISK_IMAGE_START_MASK;
rd_prompt = ((RAMDISK_FLAGS & RAMDISK_PROMPT_FLAG) != 0);
rd_doload = ((RAMDISK_FLAGS & RAMDISK_LOAD_FLAG) != 0);
#endif
#endif /* !CONFIG_XEN */
setup_memory_region();
copy_edd();
if (!MOUNT_ROOT_RDONLY)
root_mountflags &= ~MS_RDONLY;
init_mm.start_code = (unsigned long) &_text;
init_mm.end_code = (unsigned long) &_etext;
init_mm.end_data = (unsigned long) &_edata;
init_mm.brk = (unsigned long) &_end;
#ifndef CONFIG_XEN
code_resource.start = virt_to_phys(&_text);
code_resource.end = virt_to_phys(&_etext)-1;
data_resource.start = virt_to_phys(&_etext);
data_resource.end = virt_to_phys(&_edata)-1;
#endif
parse_cmdline_early(cmdline_p);
early_identify_cpu(&boot_cpu_data);
/*
* partially used pages are not usable - thus
* we are rounding upwards:
*/
end_pfn = e820_end_of_ram();
num_physpages = end_pfn; /* for pfn_valid */
check_efer();
#ifndef CONFIG_XEN
discover_ebda();
#endif
init_memory_mapping(0, (end_pfn_map << PAGE_SHIFT));
#ifdef CONFIG_ACPI_NUMA
/*
* Parse SRAT to discover nodes.
*/
acpi_numa_init();
#endif
#ifdef CONFIG_NUMA
numa_initmem_init(0, end_pfn);
#else
contig_initmem_init(0, end_pfn);
#endif
/* Reserve direct mapping */
reserve_bootmem_generic(table_start << PAGE_SHIFT,
(table_end - table_start) << PAGE_SHIFT);
/* reserve kernel */
kernel_end = round_up(__pa_symbol(&_end),PAGE_SIZE);
reserve_bootmem_generic(HIGH_MEMORY, kernel_end - HIGH_MEMORY);
#ifdef CONFIG_XEN
/* reserve physmap, start info and initial page tables */
reserve_bootmem(kernel_end, (table_start<<PAGE_SHIFT)-kernel_end);
#else
/*
* reserve physical page 0 - it's a special BIOS page on many boxes,
* enabling clean reboots, SMP operation, laptop functions.
*/
reserve_bootmem_generic(0, PAGE_SIZE);
/* reserve ebda region */
if (ebda_addr)
reserve_bootmem_generic(ebda_addr, ebda_size);
#endif
#ifdef CONFIG_SMP
/*
* But first pinch a few for the stack/trampoline stuff
* FIXME: Don't need the extra page at 4K, but need to fix
* trampoline before removing it. (see the GDT stuff)
*/
reserve_bootmem_generic(PAGE_SIZE, PAGE_SIZE);
/* Reserve SMP trampoline */
reserve_bootmem_generic(SMP_TRAMPOLINE_BASE, PAGE_SIZE);
#endif
#ifdef CONFIG_ACPI_SLEEP
/*
* Reserve low memory region for sleep support.
*/
acpi_reserve_bootmem();
#endif
#ifdef CONFIG_XEN
#ifdef CONFIG_BLK_DEV_INITRD
if (xen_start_info->mod_start) {
if (INITRD_START + INITRD_SIZE <= (end_pfn << PAGE_SHIFT)) {
/*reserve_bootmem_generic(INITRD_START, INITRD_SIZE);*/
initrd_start = INITRD_START + PAGE_OFFSET;
initrd_end = initrd_start+INITRD_SIZE;
initrd_below_start_ok = 1;
} else {
printk(KERN_ERR "initrd extends beyond end of memory "
"(0x%08lx > 0x%08lx)\ndisabling initrd\n",
(unsigned long)(INITRD_START + INITRD_SIZE),
(unsigned long)(end_pfn << PAGE_SHIFT));
initrd_start = 0;
}
}
#endif
#else /* CONFIG_XEN */
#ifdef CONFIG_BLK_DEV_INITRD
if (LOADER_TYPE && INITRD_START) {
if (INITRD_START + INITRD_SIZE <= (end_pfn << PAGE_SHIFT)) {
reserve_bootmem_generic(INITRD_START, INITRD_SIZE);
initrd_start =
INITRD_START ? INITRD_START + PAGE_OFFSET : 0;
initrd_end = initrd_start+INITRD_SIZE;
}
else {
printk(KERN_ERR "initrd extends beyond end of memory "
"(0x%08lx > 0x%08lx)\ndisabling initrd\n",
(unsigned long)(INITRD_START + INITRD_SIZE),
(unsigned long)(end_pfn << PAGE_SHIFT));
initrd_start = 0;
}
}
#endif
#endif /* !CONFIG_XEN */
#ifdef CONFIG_KEXEC
if (crashk_res.start != crashk_res.end) {
reserve_bootmem(crashk_res.start,
crashk_res.end - crashk_res.start + 1);
}
#endif
paging_init();
#ifdef CONFIG_X86_LOCAL_APIC
/*
* Find and reserve possible boot-time SMP configuration:
*/
find_smp_config();
#endif
#ifdef CONFIG_XEN
{
int i, j, k, fpp;
unsigned long va;
/* 'Initial mapping' of initrd must be destroyed. */
for (va = xen_start_info->mod_start;
va < (xen_start_info->mod_start+xen_start_info->mod_len);
va += PAGE_SIZE) {
HYPERVISOR_update_va_mapping(va, __pte_ma(0), 0);
}
if (!xen_feature(XENFEAT_auto_translated_physmap)) {
/* Make sure we have a large enough P->M table. */
phys_to_machine_mapping = alloc_bootmem(
end_pfn * sizeof(unsigned long));
memset(phys_to_machine_mapping, ~0,
end_pfn * sizeof(unsigned long));
memcpy(phys_to_machine_mapping,
(unsigned long *)xen_start_info->mfn_list,
xen_start_info->nr_pages * sizeof(unsigned long));
free_bootmem(
__pa(xen_start_info->mfn_list),
PFN_PHYS(PFN_UP(xen_start_info->nr_pages *
sizeof(unsigned long))));
/* Destroyed 'initial mapping' of old p2m table. */
for (va = xen_start_info->mfn_list;
va < (xen_start_info->mfn_list +
(xen_start_info->nr_pages*sizeof(unsigned long)));
va += PAGE_SIZE) {
HYPERVISOR_update_va_mapping(va, __pte_ma(0), 0);
}
/*
* Initialise the list of the frames that specify the
* list of frames that make up the p2m table. Used by
* save/restore.
*/
pfn_to_mfn_frame_list_list = alloc_bootmem(PAGE_SIZE);
HYPERVISOR_shared_info->arch.pfn_to_mfn_frame_list_list =
virt_to_mfn(pfn_to_mfn_frame_list_list);
fpp = PAGE_SIZE/sizeof(unsigned long);
for (i=0, j=0, k=-1; i< end_pfn; i+=fpp, j++) {
if ((j % fpp) == 0) {
k++;
BUG_ON(k>=fpp);
pfn_to_mfn_frame_list[k] =
alloc_bootmem(PAGE_SIZE);
pfn_to_mfn_frame_list_list[k] =
virt_to_mfn(pfn_to_mfn_frame_list[k]);
j=0;
}
pfn_to_mfn_frame_list[k][j] =
virt_to_mfn(&phys_to_machine_mapping[i]);
}
HYPERVISOR_shared_info->arch.max_pfn = end_pfn;
}
}
if (xen_start_info->flags & SIF_INITDOMAIN)
dmi_scan_machine();
if ( ! (xen_start_info->flags & SIF_INITDOMAIN))
{
acpi_disabled = 1;
#ifdef CONFIG_ACPI
acpi_ht = 0;
#endif
}
#endif
#ifndef CONFIG_XEN
check_ioapic();
#endif
zap_low_mappings(0);
/*
* set this early, so we dont allocate cpu0
* if MADT list doesnt list BSP first
* mpparse.c/MP_processor_info() allocates logical cpu numbers.
*/
cpu_set(0, cpu_present_map);
#ifdef CONFIG_ACPI
/*
* Initialize the ACPI boot-time table parser (gets the RSDP and SDT).
* Call this early for SRAT node setup.
*/
acpi_boot_table_init();
/*
* Read APIC and some other early information from ACPI tables.
*/
acpi_boot_init();
#endif
init_cpu_to_node();
#ifdef CONFIG_X86_LOCAL_APIC
/*
* get boot-time SMP configuration:
*/
if (smp_found_config)
get_smp_config();
#ifndef CONFIG_XEN
init_apic_mappings();
#endif
#endif
#if defined(CONFIG_XEN) && defined(CONFIG_SMP) && !defined(CONFIG_HOTPLUG_CPU)
prefill_possible_map();
#endif
/*
* Request address space for all standard RAM and ROM resources
* and also for regions reported as reserved by the e820.
*/
#if defined(CONFIG_XEN_PRIVILEGED_GUEST)
probe_roms();
if (xen_start_info->flags & SIF_INITDOMAIN) {
machine_e820 = alloc_bootmem_low_pages(PAGE_SIZE);
memmap.nr_entries = E820MAX;
set_xen_guest_handle(memmap.buffer, machine_e820);
BUG_ON(HYPERVISOR_memory_op(XENMEM_machine_memory_map, &memmap));
e820_reserve_resources(machine_e820, memmap.nr_entries);
}
#elif !defined(CONFIG_XEN)
probe_roms();
e820_reserve_resources(e820.map, e820.nr_map);
#endif
request_resource(&iomem_resource, &video_ram_resource);
{
unsigned i;
/* request I/O space for devices used on all i[345]86 PCs */
for (i = 0; i < STANDARD_IO_RESOURCES; i++)
request_resource(&ioport_resource, &standard_io_resources[i]);
}
#if defined(CONFIG_XEN_PRIVILEGED_GUEST)
if (xen_start_info->flags & SIF_INITDOMAIN) {
e820_setup_gap(machine_e820, memmap.nr_entries);
free_bootmem(__pa(machine_e820), PAGE_SIZE);
}
#elif !defined(CONFIG_XEN)
e820_setup_gap(e820.map, e820.nr_map);
#endif
#ifdef CONFIG_GART_IOMMU
iommu_hole_init();
#endif
#ifdef CONFIG_XEN
{
struct physdev_set_iopl set_iopl;
set_iopl.iopl = 1;
HYPERVISOR_physdev_op(PHYSDEVOP_set_iopl, &set_iopl);
if (xen_start_info->flags & SIF_INITDOMAIN) {
if (!(xen_start_info->flags & SIF_PRIVILEGED))
panic("Xen granted us console access "
"but not privileged status");
#ifdef CONFIG_VT
#if defined(CONFIG_VGA_CONSOLE)
conswitchp = &vga_con;
#elif defined(CONFIG_DUMMY_CONSOLE)
conswitchp = &dummy_con;
#endif
#endif
} else {
extern int console_use_vt;
console_use_vt = 0;
}
}
#else /* CONFIG_XEN */
#ifdef CONFIG_VT
#if defined(CONFIG_VGA_CONSOLE)
conswitchp = &vga_con;
#elif defined(CONFIG_DUMMY_CONSOLE)
conswitchp = &dummy_con;
#endif
#endif
#endif /* !CONFIG_XEN */
}
void __init setup_arch(char **cmdline_p)
{
unsigned long low_mem_size;
unsigned long kernel_end;
ROOT_DEV = old_decode_dev(ORIG_ROOT_DEV);
drive_info = DRIVE_INFO;
screen_info = SCREEN_INFO;
edid_info = EDID_INFO;
aux_device_present = AUX_DEVICE_INFO;
saved_video_mode = SAVED_VIDEO_MODE;
#ifdef CONFIG_BLK_DEV_RAM
rd_image_start = RAMDISK_FLAGS & RAMDISK_IMAGE_START_MASK;
rd_prompt = ((RAMDISK_FLAGS & RAMDISK_PROMPT_FLAG) != 0);
rd_doload = ((RAMDISK_FLAGS & RAMDISK_LOAD_FLAG) != 0);
#endif
setup_memory_region();
copy_edd();
if (!MOUNT_ROOT_RDONLY)
root_mountflags &= ~MS_RDONLY;
init_mm.start_code = (unsigned long) &_text;
init_mm.end_code = (unsigned long) &_etext;
init_mm.end_data = (unsigned long) &_edata;
init_mm.brk = (unsigned long) &_end;
code_resource.start = virt_to_phys(&_text);
code_resource.end = virt_to_phys(&_etext)-1;
data_resource.start = virt_to_phys(&_etext);
data_resource.end = virt_to_phys(&_edata)-1;
parse_cmdline_early(cmdline_p);
/*
* partially used pages are not usable - thus
* we are rounding upwards:
*/
end_pfn = e820_end_of_ram();
check_efer();
init_memory_mapping();
#ifdef CONFIG_DISCONTIGMEM
numa_initmem_init(0, end_pfn);
#else
contig_initmem_init();
#endif
/* Reserve direct mapping */
reserve_bootmem_generic(table_start << PAGE_SHIFT,
(table_end - table_start) << PAGE_SHIFT);
/* reserve kernel */
kernel_end = round_up(__pa_symbol(&_end),PAGE_SIZE);
reserve_bootmem_generic(HIGH_MEMORY, kernel_end - HIGH_MEMORY);
/*
* reserve physical page 0 - it's a special BIOS page on many boxes,
* enabling clean reboots, SMP operation, laptop functions.
*/
reserve_bootmem_generic(0, PAGE_SIZE);
#ifdef CONFIG_SMP
/*
* But first pinch a few for the stack/trampoline stuff
* FIXME: Don't need the extra page at 4K, but need to fix
* trampoline before removing it. (see the GDT stuff)
*/
reserve_bootmem_generic(PAGE_SIZE, PAGE_SIZE);
/* Reserve SMP trampoline */
reserve_bootmem_generic(SMP_TRAMPOLINE_BASE, PAGE_SIZE);
#endif
#ifdef CONFIG_ACPI_SLEEP
/*
* Reserve low memory region for sleep support.
*/
acpi_reserve_bootmem();
#endif
#ifdef CONFIG_X86_LOCAL_APIC
/*
* Find and reserve possible boot-time SMP configuration:
*/
find_smp_config();
#endif
#ifdef CONFIG_BLK_DEV_INITRD
if (LOADER_TYPE && INITRD_START) {
if (INITRD_START + INITRD_SIZE <= (end_pfn << PAGE_SHIFT)) {
reserve_bootmem_generic(INITRD_START, INITRD_SIZE);
initrd_start =
INITRD_START ? INITRD_START + PAGE_OFFSET : 0;
initrd_end = initrd_start+INITRD_SIZE;
}
else {
printk(KERN_ERR "initrd extends beyond end of memory "
"(0x%08lx > 0x%08lx)\ndisabling initrd\n",
(unsigned long)(INITRD_START + INITRD_SIZE),
(unsigned long)(end_pfn << PAGE_SHIFT));
initrd_start = 0;
}
}
#endif
paging_init();
check_ioapic();
#ifdef CONFIG_ACPI_BOOT
/*
* Initialize the ACPI boot-time table parser (gets the RSDP and SDT).
* Must do this after paging_init (due to reliance on fixmap, and thus
* the bootmem allocator) but before get_smp_config (to allow parsing
* of MADT).
*/
acpi_boot_init();
#endif
#ifdef CONFIG_X86_LOCAL_APIC
/*
* get boot-time SMP configuration:
*/
if (smp_found_config)
get_smp_config();
init_apic_mappings();
#endif
/*
* Request address space for all standard RAM and ROM resources
* and also for regions reported as reserved by the e820.
*/
probe_roms();
e820_reserve_resources();
request_resource(&iomem_resource, &video_ram_resource);
{
unsigned i;
/* request I/O space for devices used on all i[345]86 PCs */
for (i = 0; i < STANDARD_IO_RESOURCES; i++)
request_resource(&ioport_resource, &standard_io_resources[i]);
}
/* Will likely break when you have unassigned resources with more
than 4GB memory and bridges that don't support more than 4GB.
Doing it properly would require to use pci_alloc_consistent
in this case. */
low_mem_size = ((end_pfn << PAGE_SHIFT) + 0xfffff) & ~0xfffff;
if (low_mem_size > pci_mem_start)
pci_mem_start = low_mem_size;
#ifdef CONFIG_GART_IOMMU
iommu_hole_init();
#endif
#ifdef CONFIG_VT
#if defined(CONFIG_VGA_CONSOLE)
conswitchp = &vga_con;
#elif defined(CONFIG_DUMMY_CONSOLE)
conswitchp = &dummy_con;
#endif
#endif
}
void __init setup_arch(char **cmdline_p)
{
unsigned long kernel_end;
ROOT_DEV = old_decode_dev(ORIG_ROOT_DEV);
screen_info = SCREEN_INFO;
edid_info = EDID_INFO;
saved_video_mode = SAVED_VIDEO_MODE;
bootloader_type = LOADER_TYPE;
#ifdef CONFIG_BLK_DEV_RAM
rd_image_start = RAMDISK_FLAGS & RAMDISK_IMAGE_START_MASK;
rd_prompt = ((RAMDISK_FLAGS & RAMDISK_PROMPT_FLAG) != 0);
rd_doload = ((RAMDISK_FLAGS & RAMDISK_LOAD_FLAG) != 0);
#endif
setup_memory_region();
copy_edd();
if (!MOUNT_ROOT_RDONLY)
root_mountflags &= ~MS_RDONLY;
init_mm.start_code = (unsigned long) &_text;
init_mm.end_code = (unsigned long) &_etext;
init_mm.end_data = (unsigned long) &_edata;
init_mm.brk = (unsigned long) &_end;
code_resource.start = virt_to_phys(&_text);
code_resource.end = virt_to_phys(&_etext)-1;
data_resource.start = virt_to_phys(&_etext);
data_resource.end = virt_to_phys(&_edata)-1;
parse_cmdline_early(cmdline_p);
early_identify_cpu(&boot_cpu_data);
/*
* partially used pages are not usable - thus
* we are rounding upwards:
*/
end_pfn = e820_end_of_ram();
num_physpages = end_pfn; /* for pfn_valid */
check_efer();
discover_ebda();
init_memory_mapping(0, (end_pfn_map << PAGE_SHIFT));
dmi_scan_machine();
zap_low_mappings(0);
#ifdef CONFIG_ACPI
/*
* Initialize the ACPI boot-time table parser (gets the RSDP and SDT).
* Call this early for SRAT node setup.
*/
acpi_boot_table_init();
#endif
#ifdef CONFIG_ACPI_NUMA
/*
* Parse SRAT to discover nodes.
*/
acpi_numa_init();
#endif
#ifdef CONFIG_NUMA
numa_initmem_init(0, end_pfn);
#else
contig_initmem_init(0, end_pfn);
#endif
/* Reserve direct mapping */
reserve_bootmem_generic(table_start << PAGE_SHIFT,
(table_end - table_start) << PAGE_SHIFT);
/* reserve kernel */
kernel_end = round_up(__pa_symbol(&_end),PAGE_SIZE);
reserve_bootmem_generic(HIGH_MEMORY, kernel_end - HIGH_MEMORY);
/*
* reserve physical page 0 - it's a special BIOS page on many boxes,
* enabling clean reboots, SMP operation, laptop functions.
*/
reserve_bootmem_generic(0, PAGE_SIZE);
/* reserve ebda region */
if (ebda_addr)
reserve_bootmem_generic(ebda_addr, ebda_size);
#ifdef CONFIG_SMP
/*
* But first pinch a few for the stack/trampoline stuff
* FIXME: Don't need the extra page at 4K, but need to fix
* trampoline before removing it. (see the GDT stuff)
*/
reserve_bootmem_generic(PAGE_SIZE, PAGE_SIZE);
/* Reserve SMP trampoline */
reserve_bootmem_generic(SMP_TRAMPOLINE_BASE, PAGE_SIZE);
#endif
#ifdef CONFIG_ACPI_SLEEP
/*
* Reserve low memory region for sleep support.
*/
acpi_reserve_bootmem();
#endif
#ifdef CONFIG_X86_LOCAL_APIC
/*
* Find and reserve possible boot-time SMP configuration:
*/
find_smp_config();
#endif
#ifdef CONFIG_BLK_DEV_INITRD
if (LOADER_TYPE && INITRD_START) {
if (INITRD_START + INITRD_SIZE <= (end_pfn << PAGE_SHIFT)) {
reserve_bootmem_generic(INITRD_START, INITRD_SIZE);
initrd_start =
INITRD_START ? INITRD_START + PAGE_OFFSET : 0;
initrd_end = initrd_start+INITRD_SIZE;
}
else {
printk(KERN_ERR "initrd extends beyond end of memory "
"(0x%08lx > 0x%08lx)\ndisabling initrd\n",
(unsigned long)(INITRD_START + INITRD_SIZE),
(unsigned long)(end_pfn << PAGE_SHIFT));
initrd_start = 0;
}
}
#endif
#ifdef CONFIG_KEXEC
if (crashk_res.start != crashk_res.end) {
reserve_bootmem(crashk_res.start,
crashk_res.end - crashk_res.start + 1);
}
#endif
paging_init();
check_ioapic();
/*
* set this early, so we dont allocate cpu0
* if MADT list doesnt list BSP first
* mpparse.c/MP_processor_info() allocates logical cpu numbers.
*/
cpu_set(0, cpu_present_map);
#ifdef CONFIG_ACPI
/*
* Read APIC and some other early information from ACPI tables.
*/
acpi_boot_init();
#endif
init_cpu_to_node();
#ifdef CONFIG_X86_LOCAL_APIC
/*
* get boot-time SMP configuration:
*/
if (smp_found_config)
get_smp_config();
init_apic_mappings();
#endif
/*
* Request address space for all standard RAM and ROM resources
* and also for regions reported as reserved by the e820.
*/
probe_roms();
e820_reserve_resources();
request_resource(&iomem_resource, &video_ram_resource);
{
unsigned i;
/* request I/O space for devices used on all i[345]86 PCs */
for (i = 0; i < STANDARD_IO_RESOURCES; i++)
request_resource(&ioport_resource, &standard_io_resources[i]);
}
e820_setup_gap();
#ifdef CONFIG_GART_IOMMU
iommu_hole_init();
#endif
#ifdef CONFIG_VT
#if defined(CONFIG_VGA_CONSOLE)
conswitchp = &vga_con;
#elif defined(CONFIG_DUMMY_CONSOLE)
conswitchp = &dummy_con;
#endif
#endif
}