11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds * Architecture-specific setup. 31da177e4SLinus Torvalds * 41da177e4SLinus Torvalds * Copyright (C) 1998-2001, 2003-2004 Hewlett-Packard Co 51da177e4SLinus Torvalds * David Mosberger-Tang <davidm@hpl.hp.com> 61da177e4SLinus Torvalds * Stephane Eranian <eranian@hpl.hp.com> 7e927ecb0SSuresh Siddha * Copyright (C) 2000, 2004 Intel Corp 8e927ecb0SSuresh Siddha * Rohit Seth <rohit.seth@intel.com> 9e927ecb0SSuresh Siddha * Suresh Siddha <suresh.b.siddha@intel.com> 10e927ecb0SSuresh Siddha * Gordon Jin <gordon.jin@intel.com> 111da177e4SLinus Torvalds * Copyright (C) 1999 VA Linux Systems 121da177e4SLinus Torvalds * Copyright (C) 1999 Walt Drummond <drummond@valinux.com> 131da177e4SLinus Torvalds * 14e927ecb0SSuresh Siddha * 12/26/04 S.Siddha, G.Jin, R.Seth 15e927ecb0SSuresh Siddha * Add multi-threading and multi-core detection 161da177e4SLinus Torvalds * 11/12/01 D.Mosberger Convert get_cpuinfo() to seq_file based show_cpuinfo(). 171da177e4SLinus Torvalds * 04/04/00 D.Mosberger renamed cpu_initialized to cpu_online_map 181da177e4SLinus Torvalds * 03/31/00 R.Seth cpu_initialized and current->processor fixes 191da177e4SLinus Torvalds * 02/04/00 D.Mosberger some more get_cpuinfo fixes... 201da177e4SLinus Torvalds * 02/01/00 R.Seth fixed get_cpuinfo for SMP 211da177e4SLinus Torvalds * 01/07/99 S.Eranian added the support for command line argument 221da177e4SLinus Torvalds * 06/24/99 W.Drummond added boot_cpu_data. 2308357f82SZoltan Menyhart * 05/28/05 Z. Menyhart Dynamic stride size for "flush_icache_range()" 241da177e4SLinus Torvalds */ 251da177e4SLinus Torvalds #include <linux/module.h> 261da177e4SLinus Torvalds #include <linux/init.h> 271da177e4SLinus Torvalds 281da177e4SLinus Torvalds #include <linux/acpi.h> 291da177e4SLinus Torvalds #include <linux/bootmem.h> 301da177e4SLinus Torvalds #include <linux/console.h> 311da177e4SLinus Torvalds #include <linux/delay.h> 321da177e4SLinus Torvalds #include <linux/kernel.h> 331da177e4SLinus Torvalds #include <linux/reboot.h> 341da177e4SLinus Torvalds #include <linux/sched.h> 351da177e4SLinus Torvalds #include <linux/seq_file.h> 361da177e4SLinus Torvalds #include <linux/string.h> 371da177e4SLinus Torvalds #include <linux/threads.h> 38894673eeSJon Smirl #include <linux/screen_info.h> 393ed3bce8SMatt Domsch #include <linux/dmi.h> 401da177e4SLinus Torvalds #include <linux/serial.h> 411da177e4SLinus Torvalds #include <linux/serial_core.h> 421da177e4SLinus Torvalds #include <linux/efi.h> 431da177e4SLinus Torvalds #include <linux/initrd.h> 446c4fa560SVenkatesh Pallipadi #include <linux/pm.h> 4595235ca2SVenkatesh Pallipadi #include <linux/cpufreq.h> 46a7956113SZou Nan hai #include <linux/kexec.h> 47a7956113SZou Nan hai #include <linux/crash_dump.h> 481da177e4SLinus Torvalds 491da177e4SLinus Torvalds #include <asm/ia32.h> 501da177e4SLinus Torvalds #include <asm/machvec.h> 511da177e4SLinus Torvalds #include <asm/mca.h> 521da177e4SLinus Torvalds #include <asm/meminit.h> 531da177e4SLinus Torvalds #include <asm/page.h> 541da177e4SLinus Torvalds #include <asm/patch.h> 551da177e4SLinus Torvalds #include <asm/pgtable.h> 561da177e4SLinus Torvalds #include <asm/processor.h> 571da177e4SLinus Torvalds #include <asm/sal.h> 581da177e4SLinus Torvalds #include <asm/sections.h> 591da177e4SLinus Torvalds #include <asm/setup.h> 601da177e4SLinus Torvalds #include <asm/smp.h> 611da177e4SLinus Torvalds #include <asm/system.h> 621da177e4SLinus Torvalds #include <asm/unistd.h> 634dc7a0bbSIngo Molnar #include <asm/system.h> 641da177e4SLinus Torvalds 651da177e4SLinus Torvalds #if defined(CONFIG_SMP) && (IA64_CPU_SIZE > PAGE_SIZE) 661da177e4SLinus Torvalds # error "struct cpuinfo_ia64 too big!" 671da177e4SLinus Torvalds #endif 681da177e4SLinus Torvalds 691da177e4SLinus Torvalds #ifdef CONFIG_SMP 701da177e4SLinus Torvalds unsigned long __per_cpu_offset[NR_CPUS]; 711da177e4SLinus Torvalds EXPORT_SYMBOL(__per_cpu_offset); 721da177e4SLinus Torvalds #endif 731da177e4SLinus Torvalds 74d6e56a2aSTony Luck extern void ia64_setup_printk_clock(void); 75d6e56a2aSTony Luck 761da177e4SLinus Torvalds DEFINE_PER_CPU(struct cpuinfo_ia64, cpu_info); 771da177e4SLinus Torvalds DEFINE_PER_CPU(unsigned long, local_per_cpu_offset); 781da177e4SLinus Torvalds DEFINE_PER_CPU(unsigned long, ia64_phys_stacked_size_p8); 791da177e4SLinus Torvalds unsigned long ia64_cycles_per_usec; 801da177e4SLinus Torvalds struct ia64_boot_param *ia64_boot_param; 811da177e4SLinus Torvalds struct screen_info screen_info; 8266b7f8a3SMark Maule unsigned long vga_console_iobase; 8366b7f8a3SMark Maule unsigned long vga_console_membase; 841da177e4SLinus Torvalds 85be379124SKhalid Aziz static struct resource data_resource = { 86be379124SKhalid Aziz .name = "Kernel data", 87be379124SKhalid Aziz .flags = IORESOURCE_BUSY | IORESOURCE_MEM 88be379124SKhalid Aziz }; 89be379124SKhalid Aziz 90be379124SKhalid Aziz static struct resource code_resource = { 91be379124SKhalid Aziz .name = "Kernel code", 92be379124SKhalid Aziz .flags = IORESOURCE_BUSY | IORESOURCE_MEM 93be379124SKhalid Aziz }; 94be379124SKhalid Aziz extern void efi_initialize_iomem_resources(struct resource *, 95be379124SKhalid Aziz struct resource *); 96d719948eSTony Luck extern char _text[], _end[], _etext[]; 97be379124SKhalid Aziz 981da177e4SLinus Torvalds unsigned long ia64_max_cacheline_size; 99e1531b42SJohn W. Linville 100e1531b42SJohn W. Linville int dma_get_cache_alignment(void) 101e1531b42SJohn W. Linville { 102e1531b42SJohn W. Linville return ia64_max_cacheline_size; 103e1531b42SJohn W. Linville } 104e1531b42SJohn W. Linville EXPORT_SYMBOL(dma_get_cache_alignment); 105e1531b42SJohn W. Linville 1061da177e4SLinus Torvalds unsigned long ia64_iobase; /* virtual address for I/O accesses */ 1071da177e4SLinus Torvalds EXPORT_SYMBOL(ia64_iobase); 1081da177e4SLinus Torvalds struct io_space io_space[MAX_IO_SPACES]; 1091da177e4SLinus Torvalds EXPORT_SYMBOL(io_space); 1101da177e4SLinus Torvalds unsigned int num_io_spaces; 1111da177e4SLinus Torvalds 1121da177e4SLinus Torvalds /* 11308357f82SZoltan Menyhart * "flush_icache_range()" needs to know what processor dependent stride size to use 11408357f82SZoltan Menyhart * when it makes i-cache(s) coherent with d-caches. 11508357f82SZoltan Menyhart */ 11608357f82SZoltan Menyhart #define I_CACHE_STRIDE_SHIFT 5 /* Safest way to go: 32 bytes by 32 bytes */ 11708357f82SZoltan Menyhart unsigned long ia64_i_cache_stride_shift = ~0; 11808357f82SZoltan Menyhart 11908357f82SZoltan Menyhart /* 1201da177e4SLinus Torvalds * The merge_mask variable needs to be set to (max(iommu_page_size(iommu)) - 1). This 1211da177e4SLinus Torvalds * mask specifies a mask of address bits that must be 0 in order for two buffers to be 1221da177e4SLinus Torvalds * mergeable by the I/O MMU (i.e., the end address of the first buffer and the start 1231da177e4SLinus Torvalds * address of the second buffer must be aligned to (merge_mask+1) in order to be 1241da177e4SLinus Torvalds * mergeable). By default, we assume there is no I/O MMU which can merge physically 1251da177e4SLinus Torvalds * discontiguous buffers, so we set the merge_mask to ~0UL, which corresponds to a iommu 1261da177e4SLinus Torvalds * page-size of 2^64. 1271da177e4SLinus Torvalds */ 1281da177e4SLinus Torvalds unsigned long ia64_max_iommu_merge_mask = ~0UL; 1291da177e4SLinus Torvalds EXPORT_SYMBOL(ia64_max_iommu_merge_mask); 1301da177e4SLinus Torvalds 1311da177e4SLinus Torvalds /* 1321da177e4SLinus Torvalds * We use a special marker for the end of memory and it uses the extra (+1) slot 1331da177e4SLinus Torvalds */ 134dae28066SChen, Kenneth W struct rsvd_region rsvd_region[IA64_MAX_RSVD_REGIONS + 1] __initdata; 135dae28066SChen, Kenneth W int num_rsvd_regions __initdata; 1361da177e4SLinus Torvalds 1371da177e4SLinus Torvalds 1381da177e4SLinus Torvalds /* 1391da177e4SLinus Torvalds * Filter incoming memory segments based on the primitive map created from the boot 1401da177e4SLinus Torvalds * parameters. Segments contained in the map are removed from the memory ranges. A 1411da177e4SLinus Torvalds * caller-specified function is called with the memory ranges that remain after filtering. 1421da177e4SLinus Torvalds * This routine does not assume the incoming segments are sorted. 1431da177e4SLinus Torvalds */ 144dae28066SChen, Kenneth W int __init 1451da177e4SLinus Torvalds filter_rsvd_memory (unsigned long start, unsigned long end, void *arg) 1461da177e4SLinus Torvalds { 1471da177e4SLinus Torvalds unsigned long range_start, range_end, prev_start; 1481da177e4SLinus Torvalds void (*func)(unsigned long, unsigned long, int); 1491da177e4SLinus Torvalds int i; 1501da177e4SLinus Torvalds 1511da177e4SLinus Torvalds #if IGNORE_PFN0 1521da177e4SLinus Torvalds if (start == PAGE_OFFSET) { 1531da177e4SLinus Torvalds printk(KERN_WARNING "warning: skipping physical page 0\n"); 1541da177e4SLinus Torvalds start += PAGE_SIZE; 1551da177e4SLinus Torvalds if (start >= end) return 0; 1561da177e4SLinus Torvalds } 1571da177e4SLinus Torvalds #endif 1581da177e4SLinus Torvalds /* 1591da177e4SLinus Torvalds * lowest possible address(walker uses virtual) 1601da177e4SLinus Torvalds */ 1611da177e4SLinus Torvalds prev_start = PAGE_OFFSET; 1621da177e4SLinus Torvalds func = arg; 1631da177e4SLinus Torvalds 1641da177e4SLinus Torvalds for (i = 0; i < num_rsvd_regions; ++i) { 1651da177e4SLinus Torvalds range_start = max(start, prev_start); 1661da177e4SLinus Torvalds range_end = min(end, rsvd_region[i].start); 1671da177e4SLinus Torvalds 1681da177e4SLinus Torvalds if (range_start < range_end) 1691da177e4SLinus Torvalds call_pernode_memory(__pa(range_start), range_end - range_start, func); 1701da177e4SLinus Torvalds 1711da177e4SLinus Torvalds /* nothing more available in this segment */ 1721da177e4SLinus Torvalds if (range_end == end) return 0; 1731da177e4SLinus Torvalds 1741da177e4SLinus Torvalds prev_start = rsvd_region[i].end; 1751da177e4SLinus Torvalds } 1761da177e4SLinus Torvalds /* end of memory marker allows full processing inside loop body */ 1771da177e4SLinus Torvalds return 0; 1781da177e4SLinus Torvalds } 1791da177e4SLinus Torvalds 180dae28066SChen, Kenneth W static void __init 1811da177e4SLinus Torvalds sort_regions (struct rsvd_region *rsvd_region, int max) 1821da177e4SLinus Torvalds { 1831da177e4SLinus Torvalds int j; 1841da177e4SLinus Torvalds 1851da177e4SLinus Torvalds /* simple bubble sorting */ 1861da177e4SLinus Torvalds while (max--) { 1871da177e4SLinus Torvalds for (j = 0; j < max; ++j) { 1881da177e4SLinus Torvalds if (rsvd_region[j].start > rsvd_region[j+1].start) { 1891da177e4SLinus Torvalds struct rsvd_region tmp; 1901da177e4SLinus Torvalds tmp = rsvd_region[j]; 1911da177e4SLinus Torvalds rsvd_region[j] = rsvd_region[j + 1]; 1921da177e4SLinus Torvalds rsvd_region[j + 1] = tmp; 1931da177e4SLinus Torvalds } 1941da177e4SLinus Torvalds } 1951da177e4SLinus Torvalds } 1961da177e4SLinus Torvalds } 1971da177e4SLinus Torvalds 198be379124SKhalid Aziz /* 199be379124SKhalid Aziz * Request address space for all standard resources 200be379124SKhalid Aziz */ 201be379124SKhalid Aziz static int __init register_memory(void) 202be379124SKhalid Aziz { 203be379124SKhalid Aziz code_resource.start = ia64_tpa(_text); 204be379124SKhalid Aziz code_resource.end = ia64_tpa(_etext) - 1; 205be379124SKhalid Aziz data_resource.start = ia64_tpa(_etext); 206d719948eSTony Luck data_resource.end = ia64_tpa(_end) - 1; 207be379124SKhalid Aziz efi_initialize_iomem_resources(&code_resource, &data_resource); 208be379124SKhalid Aziz 209be379124SKhalid Aziz return 0; 210be379124SKhalid Aziz } 211be379124SKhalid Aziz 212be379124SKhalid Aziz __initcall(register_memory); 213be379124SKhalid Aziz 2141da177e4SLinus Torvalds /** 2151da177e4SLinus Torvalds * reserve_memory - setup reserved memory areas 2161da177e4SLinus Torvalds * 2171da177e4SLinus Torvalds * Setup the reserved memory areas set aside for the boot parameters, 2181da177e4SLinus Torvalds * initrd, etc. There are currently %IA64_MAX_RSVD_REGIONS defined, 2191da177e4SLinus Torvalds * see include/asm-ia64/meminit.h if you need to define more. 2201da177e4SLinus Torvalds */ 221dae28066SChen, Kenneth W void __init 2221da177e4SLinus Torvalds reserve_memory (void) 2231da177e4SLinus Torvalds { 2241da177e4SLinus Torvalds int n = 0; 2251da177e4SLinus Torvalds 2261da177e4SLinus Torvalds /* 2271da177e4SLinus Torvalds * none of the entries in this table overlap 2281da177e4SLinus Torvalds */ 2291da177e4SLinus Torvalds rsvd_region[n].start = (unsigned long) ia64_boot_param; 2301da177e4SLinus Torvalds rsvd_region[n].end = rsvd_region[n].start + sizeof(*ia64_boot_param); 2311da177e4SLinus Torvalds n++; 2321da177e4SLinus Torvalds 2331da177e4SLinus Torvalds rsvd_region[n].start = (unsigned long) __va(ia64_boot_param->efi_memmap); 2341da177e4SLinus Torvalds rsvd_region[n].end = rsvd_region[n].start + ia64_boot_param->efi_memmap_size; 2351da177e4SLinus Torvalds n++; 2361da177e4SLinus Torvalds 2371da177e4SLinus Torvalds rsvd_region[n].start = (unsigned long) __va(ia64_boot_param->command_line); 2381da177e4SLinus Torvalds rsvd_region[n].end = (rsvd_region[n].start 2391da177e4SLinus Torvalds + strlen(__va(ia64_boot_param->command_line)) + 1); 2401da177e4SLinus Torvalds n++; 2411da177e4SLinus Torvalds 2421da177e4SLinus Torvalds rsvd_region[n].start = (unsigned long) ia64_imva((void *)KERNEL_START); 2431da177e4SLinus Torvalds rsvd_region[n].end = (unsigned long) ia64_imva(_end); 2441da177e4SLinus Torvalds n++; 2451da177e4SLinus Torvalds 2461da177e4SLinus Torvalds #ifdef CONFIG_BLK_DEV_INITRD 2471da177e4SLinus Torvalds if (ia64_boot_param->initrd_start) { 2481da177e4SLinus Torvalds rsvd_region[n].start = (unsigned long)__va(ia64_boot_param->initrd_start); 2491da177e4SLinus Torvalds rsvd_region[n].end = rsvd_region[n].start + ia64_boot_param->initrd_size; 2501da177e4SLinus Torvalds n++; 2511da177e4SLinus Torvalds } 2521da177e4SLinus Torvalds #endif 2531da177e4SLinus Torvalds 254cee87af2SMagnus Damm #ifdef CONFIG_PROC_VMCORE 255cee87af2SMagnus Damm if (reserve_elfcorehdr(&rsvd_region[n].start, 256cee87af2SMagnus Damm &rsvd_region[n].end) == 0) 257cee87af2SMagnus Damm n++; 258cee87af2SMagnus Damm #endif 259cee87af2SMagnus Damm 260d8c97d5fSTony Luck efi_memmap_init(&rsvd_region[n].start, &rsvd_region[n].end); 261d8c97d5fSTony Luck n++; 262d8c97d5fSTony Luck 263a7956113SZou Nan hai #ifdef CONFIG_KEXEC 264a7956113SZou Nan hai /* crashkernel=size@offset specifies the size to reserve for a crash 265ad1c3ba7SHorms * kernel. If offset is 0, then it is determined automatically. 266a7956113SZou Nan hai * By reserving this memory we guarantee that linux never set's it 267a7956113SZou Nan hai * up as a DMA target.Useful for holding code to do something 268a7956113SZou Nan hai * appropriate after a kernel panic. 269a7956113SZou Nan hai */ 270a7956113SZou Nan hai { 271a8d91b84SAlon Bar-Lev char *from = strstr(boot_command_line, "crashkernel="); 272a7956113SZou Nan hai unsigned long base, size; 273a7956113SZou Nan hai if (from) { 274a7956113SZou Nan hai size = memparse(from + 12, &from); 275ad1c3ba7SHorms if (*from == '@') 276ad1c3ba7SHorms base = memparse(from+1, &from); 277ad1c3ba7SHorms else 278ad1c3ba7SHorms base = 0; 279a7956113SZou Nan hai if (size) { 280ad1c3ba7SHorms if (!base) { 281a7956113SZou Nan hai sort_regions(rsvd_region, n); 282a7956113SZou Nan hai base = kdump_find_rsvd_region(size, 283a7956113SZou Nan hai rsvd_region, n); 284ad1c3ba7SHorms } 285a7956113SZou Nan hai if (base != ~0UL) { 286a7956113SZou Nan hai rsvd_region[n].start = 287a7956113SZou Nan hai (unsigned long)__va(base); 288a7956113SZou Nan hai rsvd_region[n].end = 289a7956113SZou Nan hai (unsigned long)__va(base + size); 290a7956113SZou Nan hai n++; 291a7956113SZou Nan hai crashk_res.start = base; 292a7956113SZou Nan hai crashk_res.end = base + size - 1; 293a7956113SZou Nan hai } 294a7956113SZou Nan hai } 295a7956113SZou Nan hai } 296a7956113SZou Nan hai efi_memmap_res.start = ia64_boot_param->efi_memmap; 297a7956113SZou Nan hai efi_memmap_res.end = efi_memmap_res.start + 298a7956113SZou Nan hai ia64_boot_param->efi_memmap_size; 299a7956113SZou Nan hai boot_param_res.start = __pa(ia64_boot_param); 300a7956113SZou Nan hai boot_param_res.end = boot_param_res.start + 301a7956113SZou Nan hai sizeof(*ia64_boot_param); 302a7956113SZou Nan hai } 303a7956113SZou Nan hai #endif 3041da177e4SLinus Torvalds /* end of memory marker */ 3051da177e4SLinus Torvalds rsvd_region[n].start = ~0UL; 3061da177e4SLinus Torvalds rsvd_region[n].end = ~0UL; 3071da177e4SLinus Torvalds n++; 3081da177e4SLinus Torvalds 3091da177e4SLinus Torvalds num_rsvd_regions = n; 3105eb1d63fSAlex Williamson BUG_ON(IA64_MAX_RSVD_REGIONS + 1 < n); 3111da177e4SLinus Torvalds 3121da177e4SLinus Torvalds sort_regions(rsvd_region, num_rsvd_regions); 3131da177e4SLinus Torvalds } 3141da177e4SLinus Torvalds 315a7956113SZou Nan hai 3161da177e4SLinus Torvalds /** 3171da177e4SLinus Torvalds * find_initrd - get initrd parameters from the boot parameter structure 3181da177e4SLinus Torvalds * 3191da177e4SLinus Torvalds * Grab the initrd start and end from the boot parameter struct given us by 3201da177e4SLinus Torvalds * the boot loader. 3211da177e4SLinus Torvalds */ 322dae28066SChen, Kenneth W void __init 3231da177e4SLinus Torvalds find_initrd (void) 3241da177e4SLinus Torvalds { 3251da177e4SLinus Torvalds #ifdef CONFIG_BLK_DEV_INITRD 3261da177e4SLinus Torvalds if (ia64_boot_param->initrd_start) { 3271da177e4SLinus Torvalds initrd_start = (unsigned long)__va(ia64_boot_param->initrd_start); 3281da177e4SLinus Torvalds initrd_end = initrd_start+ia64_boot_param->initrd_size; 3291da177e4SLinus Torvalds 3301da177e4SLinus Torvalds printk(KERN_INFO "Initial ramdisk at: 0x%lx (%lu bytes)\n", 3311da177e4SLinus Torvalds initrd_start, ia64_boot_param->initrd_size); 3321da177e4SLinus Torvalds } 3331da177e4SLinus Torvalds #endif 3341da177e4SLinus Torvalds } 3351da177e4SLinus Torvalds 3361da177e4SLinus Torvalds static void __init 3371da177e4SLinus Torvalds io_port_init (void) 3381da177e4SLinus Torvalds { 3391da177e4SLinus Torvalds unsigned long phys_iobase; 3401da177e4SLinus Torvalds 3411da177e4SLinus Torvalds /* 34244c45120SBjorn Helgaas * Set `iobase' based on the EFI memory map or, failing that, the 34344c45120SBjorn Helgaas * value firmware left in ar.k0. 3441da177e4SLinus Torvalds * 34544c45120SBjorn Helgaas * Note that in ia32 mode, IN/OUT instructions use ar.k0 to compute 34644c45120SBjorn Helgaas * the port's virtual address, so ia32_load_state() loads it with a 34744c45120SBjorn Helgaas * user virtual address. But in ia64 mode, glibc uses the 34844c45120SBjorn Helgaas * *physical* address in ar.k0 to mmap the appropriate area from 34944c45120SBjorn Helgaas * /dev/mem, and the inX()/outX() interfaces use MMIO. In both 35044c45120SBjorn Helgaas * cases, user-mode can only use the legacy 0-64K I/O port space. 35144c45120SBjorn Helgaas * 35244c45120SBjorn Helgaas * ar.k0 is not involved in kernel I/O port accesses, which can use 35344c45120SBjorn Helgaas * any of the I/O port spaces and are done via MMIO using the 35444c45120SBjorn Helgaas * virtual mmio_base from the appropriate io_space[]. 3551da177e4SLinus Torvalds */ 3561da177e4SLinus Torvalds phys_iobase = efi_get_iobase(); 35744c45120SBjorn Helgaas if (!phys_iobase) { 3581da177e4SLinus Torvalds phys_iobase = ia64_get_kr(IA64_KR_IO_BASE); 35944c45120SBjorn Helgaas printk(KERN_INFO "No I/O port range found in EFI memory map, " 36044c45120SBjorn Helgaas "falling back to AR.KR0 (0x%lx)\n", phys_iobase); 3611da177e4SLinus Torvalds } 3621da177e4SLinus Torvalds ia64_iobase = (unsigned long) ioremap(phys_iobase, 0); 36344c45120SBjorn Helgaas ia64_set_kr(IA64_KR_IO_BASE, __pa(ia64_iobase)); 3641da177e4SLinus Torvalds 3651da177e4SLinus Torvalds /* setup legacy IO port space */ 3661da177e4SLinus Torvalds io_space[0].mmio_base = ia64_iobase; 3671da177e4SLinus Torvalds io_space[0].sparse = 1; 3681da177e4SLinus Torvalds num_io_spaces = 1; 3691da177e4SLinus Torvalds } 3701da177e4SLinus Torvalds 3711da177e4SLinus Torvalds /** 3721da177e4SLinus Torvalds * early_console_setup - setup debugging console 3731da177e4SLinus Torvalds * 3741da177e4SLinus Torvalds * Consoles started here require little enough setup that we can start using 3751da177e4SLinus Torvalds * them very early in the boot process, either right after the machine 3761da177e4SLinus Torvalds * vector initialization, or even before if the drivers can detect their hw. 3771da177e4SLinus Torvalds * 3781da177e4SLinus Torvalds * Returns non-zero if a console couldn't be setup. 3791da177e4SLinus Torvalds */ 3801da177e4SLinus Torvalds static inline int __init 3811da177e4SLinus Torvalds early_console_setup (char *cmdline) 3821da177e4SLinus Torvalds { 38366b7f8a3SMark Maule int earlycons = 0; 38466b7f8a3SMark Maule 3851da177e4SLinus Torvalds #ifdef CONFIG_SERIAL_SGI_L1_CONSOLE 3861da177e4SLinus Torvalds { 3871da177e4SLinus Torvalds extern int sn_serial_console_early_setup(void); 3881da177e4SLinus Torvalds if (!sn_serial_console_early_setup()) 38966b7f8a3SMark Maule earlycons++; 3901da177e4SLinus Torvalds } 3911da177e4SLinus Torvalds #endif 3921da177e4SLinus Torvalds #ifdef CONFIG_EFI_PCDP 3931da177e4SLinus Torvalds if (!efi_setup_pcdp_console(cmdline)) 39466b7f8a3SMark Maule earlycons++; 3951da177e4SLinus Torvalds #endif 3961da177e4SLinus Torvalds #ifdef CONFIG_SERIAL_8250_CONSOLE 3971da177e4SLinus Torvalds if (!early_serial_console_init(cmdline)) 39866b7f8a3SMark Maule earlycons++; 3991da177e4SLinus Torvalds #endif 4001da177e4SLinus Torvalds 40166b7f8a3SMark Maule return (earlycons) ? 0 : -1; 4021da177e4SLinus Torvalds } 4031da177e4SLinus Torvalds 4041da177e4SLinus Torvalds static inline void 4051da177e4SLinus Torvalds mark_bsp_online (void) 4061da177e4SLinus Torvalds { 4071da177e4SLinus Torvalds #ifdef CONFIG_SMP 4081da177e4SLinus Torvalds /* If we register an early console, allow CPU 0 to printk */ 4091da177e4SLinus Torvalds cpu_set(smp_processor_id(), cpu_online_map); 4101da177e4SLinus Torvalds #endif 4111da177e4SLinus Torvalds } 4121da177e4SLinus Torvalds 413e927ecb0SSuresh Siddha #ifdef CONFIG_SMP 414244fd545SChen, Kenneth W static void __init 415e927ecb0SSuresh Siddha check_for_logical_procs (void) 416e927ecb0SSuresh Siddha { 417e927ecb0SSuresh Siddha pal_logical_to_physical_t info; 418e927ecb0SSuresh Siddha s64 status; 419e927ecb0SSuresh Siddha 420e927ecb0SSuresh Siddha status = ia64_pal_logical_to_phys(0, &info); 421e927ecb0SSuresh Siddha if (status == -1) { 422e927ecb0SSuresh Siddha printk(KERN_INFO "No logical to physical processor mapping " 423e927ecb0SSuresh Siddha "available\n"); 424e927ecb0SSuresh Siddha return; 425e927ecb0SSuresh Siddha } 426e927ecb0SSuresh Siddha if (status) { 427e927ecb0SSuresh Siddha printk(KERN_ERR "ia64_pal_logical_to_phys failed with %ld\n", 428e927ecb0SSuresh Siddha status); 429e927ecb0SSuresh Siddha return; 430e927ecb0SSuresh Siddha } 431e927ecb0SSuresh Siddha /* 432e927ecb0SSuresh Siddha * Total number of siblings that BSP has. Though not all of them 433e927ecb0SSuresh Siddha * may have booted successfully. The correct number of siblings 434e927ecb0SSuresh Siddha * booted is in info.overview_num_log. 435e927ecb0SSuresh Siddha */ 436e927ecb0SSuresh Siddha smp_num_siblings = info.overview_tpc; 437e927ecb0SSuresh Siddha smp_num_cpucores = info.overview_cpp; 438e927ecb0SSuresh Siddha } 439e927ecb0SSuresh Siddha #endif 440e927ecb0SSuresh Siddha 441a5b00bb4SHorms static __initdata int nomca; 442a5b00bb4SHorms static __init int setup_nomca(char *s) 443a5b00bb4SHorms { 444a5b00bb4SHorms nomca = 1; 445a5b00bb4SHorms return 0; 446a5b00bb4SHorms } 447a5b00bb4SHorms early_param("nomca", setup_nomca); 448a5b00bb4SHorms 44945a98fc6SHorms #ifdef CONFIG_PROC_VMCORE 45045a98fc6SHorms /* elfcorehdr= specifies the location of elf core header 45145a98fc6SHorms * stored by the crashed kernel. 45245a98fc6SHorms */ 45345a98fc6SHorms static int __init parse_elfcorehdr(char *arg) 45445a98fc6SHorms { 45545a98fc6SHorms if (!arg) 45645a98fc6SHorms return -EINVAL; 45745a98fc6SHorms 45845a98fc6SHorms elfcorehdr_addr = memparse(arg, &arg); 45945a98fc6SHorms return 0; 46045a98fc6SHorms } 46145a98fc6SHorms early_param("elfcorehdr", parse_elfcorehdr); 462cee87af2SMagnus Damm 463cee87af2SMagnus Damm int __init reserve_elfcorehdr(unsigned long *start, unsigned long *end) 464cee87af2SMagnus Damm { 465cee87af2SMagnus Damm unsigned long length; 466cee87af2SMagnus Damm 467cee87af2SMagnus Damm /* We get the address using the kernel command line, 468cee87af2SMagnus Damm * but the size is extracted from the EFI tables. 469cee87af2SMagnus Damm * Both address and size are required for reservation 470cee87af2SMagnus Damm * to work properly. 471cee87af2SMagnus Damm */ 472cee87af2SMagnus Damm 473cee87af2SMagnus Damm if (elfcorehdr_addr >= ELFCORE_ADDR_MAX) 474cee87af2SMagnus Damm return -EINVAL; 475cee87af2SMagnus Damm 476cee87af2SMagnus Damm if ((length = vmcore_find_descriptor_size(elfcorehdr_addr)) == 0) { 477cee87af2SMagnus Damm elfcorehdr_addr = ELFCORE_ADDR_MAX; 478cee87af2SMagnus Damm return -EINVAL; 479cee87af2SMagnus Damm } 480cee87af2SMagnus Damm 481cee87af2SMagnus Damm *start = (unsigned long)__va(elfcorehdr_addr); 482cee87af2SMagnus Damm *end = *start + length; 483cee87af2SMagnus Damm return 0; 484cee87af2SMagnus Damm } 485cee87af2SMagnus Damm 48645a98fc6SHorms #endif /* CONFIG_PROC_VMCORE */ 48745a98fc6SHorms 4881da177e4SLinus Torvalds void __init 4891da177e4SLinus Torvalds setup_arch (char **cmdline_p) 4901da177e4SLinus Torvalds { 4911da177e4SLinus Torvalds unw_init(); 4921da177e4SLinus Torvalds 4931da177e4SLinus Torvalds ia64_patch_vtop((u64) __start___vtop_patchlist, (u64) __end___vtop_patchlist); 4941da177e4SLinus Torvalds 4951da177e4SLinus Torvalds *cmdline_p = __va(ia64_boot_param->command_line); 496a8d91b84SAlon Bar-Lev strlcpy(boot_command_line, *cmdline_p, COMMAND_LINE_SIZE); 4971da177e4SLinus Torvalds 4981da177e4SLinus Torvalds efi_init(); 4991da177e4SLinus Torvalds io_port_init(); 5001da177e4SLinus Torvalds 501a5b00bb4SHorms parse_early_param(); 502a5b00bb4SHorms 5031da177e4SLinus Torvalds #ifdef CONFIG_IA64_GENERIC 504a5b00bb4SHorms machvec_init(NULL); 5051da177e4SLinus Torvalds #endif 5061da177e4SLinus Torvalds 5071da177e4SLinus Torvalds if (early_console_setup(*cmdline_p) == 0) 5081da177e4SLinus Torvalds mark_bsp_online(); 5091da177e4SLinus Torvalds 510888ba6c6SLen Brown #ifdef CONFIG_ACPI 5111da177e4SLinus Torvalds /* Initialize the ACPI boot-time table parser */ 5121da177e4SLinus Torvalds acpi_table_init(); 5131da177e4SLinus Torvalds # ifdef CONFIG_ACPI_NUMA 5141da177e4SLinus Torvalds acpi_numa_init(); 5151da177e4SLinus Torvalds # endif 5161da177e4SLinus Torvalds #else 5171da177e4SLinus Torvalds # ifdef CONFIG_SMP 5181da177e4SLinus Torvalds smp_build_cpu_map(); /* happens, e.g., with the Ski simulator */ 5191da177e4SLinus Torvalds # endif 5201da177e4SLinus Torvalds #endif /* CONFIG_APCI_BOOT */ 5211da177e4SLinus Torvalds 5221da177e4SLinus Torvalds find_memory(); 5231da177e4SLinus Torvalds 5241da177e4SLinus Torvalds /* process SAL system table: */ 525b2c99e3cSBjorn Helgaas ia64_sal_init(__va(efi.sal_systab)); 5261da177e4SLinus Torvalds 527d6e56a2aSTony Luck ia64_setup_printk_clock(); 528d6e56a2aSTony Luck 5291da177e4SLinus Torvalds #ifdef CONFIG_SMP 5301da177e4SLinus Torvalds cpu_physical_id(0) = hard_smp_processor_id(); 531e927ecb0SSuresh Siddha 532e927ecb0SSuresh Siddha cpu_set(0, cpu_sibling_map[0]); 533e927ecb0SSuresh Siddha cpu_set(0, cpu_core_map[0]); 534e927ecb0SSuresh Siddha 535e927ecb0SSuresh Siddha check_for_logical_procs(); 536e927ecb0SSuresh Siddha if (smp_num_cpucores > 1) 537e927ecb0SSuresh Siddha printk(KERN_INFO 538e927ecb0SSuresh Siddha "cpu package is Multi-Core capable: number of cores=%d\n", 539e927ecb0SSuresh Siddha smp_num_cpucores); 540e927ecb0SSuresh Siddha if (smp_num_siblings > 1) 541e927ecb0SSuresh Siddha printk(KERN_INFO 542e927ecb0SSuresh Siddha "cpu package is Multi-Threading capable: number of siblings=%d\n", 543e927ecb0SSuresh Siddha smp_num_siblings); 5441da177e4SLinus Torvalds #endif 5451da177e4SLinus Torvalds 5461da177e4SLinus Torvalds cpu_init(); /* initialize the bootstrap CPU */ 547dcc17d1bSPeter Keilty mmu_context_init(); /* initialize context_id bitmap */ 5481da177e4SLinus Torvalds 549fa1d19e5STroy Heber check_sal_cache_flush(); 550fa1d19e5STroy Heber 551888ba6c6SLen Brown #ifdef CONFIG_ACPI 5521da177e4SLinus Torvalds acpi_boot_init(); 5531da177e4SLinus Torvalds #endif 5541da177e4SLinus Torvalds 5551da177e4SLinus Torvalds #ifdef CONFIG_VT 5561da177e4SLinus Torvalds if (!conswitchp) { 5571da177e4SLinus Torvalds # if defined(CONFIG_DUMMY_CONSOLE) 5581da177e4SLinus Torvalds conswitchp = &dummy_con; 5591da177e4SLinus Torvalds # endif 5601da177e4SLinus Torvalds # if defined(CONFIG_VGA_CONSOLE) 5611da177e4SLinus Torvalds /* 5621da177e4SLinus Torvalds * Non-legacy systems may route legacy VGA MMIO range to system 5631da177e4SLinus Torvalds * memory. vga_con probes the MMIO hole, so memory looks like 5641da177e4SLinus Torvalds * a VGA device to it. The EFI memory map can tell us if it's 5651da177e4SLinus Torvalds * memory so we can avoid this problem. 5661da177e4SLinus Torvalds */ 5671da177e4SLinus Torvalds if (efi_mem_type(0xA0000) != EFI_CONVENTIONAL_MEMORY) 5681da177e4SLinus Torvalds conswitchp = &vga_con; 5691da177e4SLinus Torvalds # endif 5701da177e4SLinus Torvalds } 5711da177e4SLinus Torvalds #endif 5721da177e4SLinus Torvalds 5731da177e4SLinus Torvalds /* enable IA-64 Machine Check Abort Handling unless disabled */ 574a5b00bb4SHorms if (!nomca) 5751da177e4SLinus Torvalds ia64_mca_init(); 5761da177e4SLinus Torvalds 5771da177e4SLinus Torvalds platform_setup(cmdline_p); 5781da177e4SLinus Torvalds paging_init(); 5791da177e4SLinus Torvalds } 5801da177e4SLinus Torvalds 5811da177e4SLinus Torvalds /* 5821da177e4SLinus Torvalds * Display cpu info for all cpu's. 5831da177e4SLinus Torvalds */ 5841da177e4SLinus Torvalds static int 5851da177e4SLinus Torvalds show_cpuinfo (struct seq_file *m, void *v) 5861da177e4SLinus Torvalds { 5871da177e4SLinus Torvalds #ifdef CONFIG_SMP 5881da177e4SLinus Torvalds # define lpj c->loops_per_jiffy 5891da177e4SLinus Torvalds # define cpunum c->cpu 5901da177e4SLinus Torvalds #else 5911da177e4SLinus Torvalds # define lpj loops_per_jiffy 5921da177e4SLinus Torvalds # define cpunum 0 5931da177e4SLinus Torvalds #endif 5941da177e4SLinus Torvalds static struct { 5951da177e4SLinus Torvalds unsigned long mask; 5961da177e4SLinus Torvalds const char *feature_name; 5971da177e4SLinus Torvalds } feature_bits[] = { 5981da177e4SLinus Torvalds { 1UL << 0, "branchlong" }, 5991da177e4SLinus Torvalds { 1UL << 1, "spontaneous deferral"}, 6001da177e4SLinus Torvalds { 1UL << 2, "16-byte atomic ops" } 6011da177e4SLinus Torvalds }; 602ae0af3e3SAron Griffis char features[128], *cp, *sep; 6031da177e4SLinus Torvalds struct cpuinfo_ia64 *c = v; 6041da177e4SLinus Torvalds unsigned long mask; 60538c0b2c2STony Luck unsigned long proc_freq; 606ae0af3e3SAron Griffis int i, size; 6071da177e4SLinus Torvalds 6081da177e4SLinus Torvalds mask = c->features; 6091da177e4SLinus Torvalds 6101da177e4SLinus Torvalds /* build the feature string: */ 611ae0af3e3SAron Griffis memcpy(features, "standard", 9); 6121da177e4SLinus Torvalds cp = features; 613ae0af3e3SAron Griffis size = sizeof(features); 614ae0af3e3SAron Griffis sep = ""; 615ae0af3e3SAron Griffis for (i = 0; i < ARRAY_SIZE(feature_bits) && size > 1; ++i) { 6161da177e4SLinus Torvalds if (mask & feature_bits[i].mask) { 617ae0af3e3SAron Griffis cp += snprintf(cp, size, "%s%s", sep, 618ae0af3e3SAron Griffis feature_bits[i].feature_name), 619ae0af3e3SAron Griffis sep = ", "; 6201da177e4SLinus Torvalds mask &= ~feature_bits[i].mask; 621ae0af3e3SAron Griffis size = sizeof(features) - (cp - features); 6221da177e4SLinus Torvalds } 6231da177e4SLinus Torvalds } 624ae0af3e3SAron Griffis if (mask && size > 1) { 625ae0af3e3SAron Griffis /* print unknown features as a hex value */ 626ae0af3e3SAron Griffis snprintf(cp, size, "%s0x%lx", sep, mask); 6271da177e4SLinus Torvalds } 6281da177e4SLinus Torvalds 62995235ca2SVenkatesh Pallipadi proc_freq = cpufreq_quick_get(cpunum); 63095235ca2SVenkatesh Pallipadi if (!proc_freq) 63195235ca2SVenkatesh Pallipadi proc_freq = c->proc_freq / 1000; 63295235ca2SVenkatesh Pallipadi 6331da177e4SLinus Torvalds seq_printf(m, 6341da177e4SLinus Torvalds "processor : %d\n" 6351da177e4SLinus Torvalds "vendor : %s\n" 6361da177e4SLinus Torvalds "arch : IA-64\n" 63776d08bb3STony Luck "family : %u\n" 6381da177e4SLinus Torvalds "model : %u\n" 63976d08bb3STony Luck "model name : %s\n" 6401da177e4SLinus Torvalds "revision : %u\n" 6411da177e4SLinus Torvalds "archrev : %u\n" 642ae0af3e3SAron Griffis "features : %s\n" 6431da177e4SLinus Torvalds "cpu number : %lu\n" 6441da177e4SLinus Torvalds "cpu regs : %u\n" 6451da177e4SLinus Torvalds "cpu MHz : %lu.%06lu\n" 6461da177e4SLinus Torvalds "itc MHz : %lu.%06lu\n" 647e927ecb0SSuresh Siddha "BogoMIPS : %lu.%02lu\n", 64876d08bb3STony Luck cpunum, c->vendor, c->family, c->model, 64976d08bb3STony Luck c->model_name, c->revision, c->archrev, 6501da177e4SLinus Torvalds features, c->ppn, c->number, 65195235ca2SVenkatesh Pallipadi proc_freq / 1000, proc_freq % 1000, 6521da177e4SLinus Torvalds c->itc_freq / 1000000, c->itc_freq % 1000000, 6531da177e4SLinus Torvalds lpj*HZ/500000, (lpj*HZ/5000) % 100); 654e927ecb0SSuresh Siddha #ifdef CONFIG_SMP 655ce6e71adSSiddha, Suresh B seq_printf(m, "siblings : %u\n", cpus_weight(cpu_core_map[cpunum])); 656e927ecb0SSuresh Siddha if (c->threads_per_core > 1 || c->cores_per_socket > 1) 657e927ecb0SSuresh Siddha seq_printf(m, 658e927ecb0SSuresh Siddha "physical id: %u\n" 659e927ecb0SSuresh Siddha "core id : %u\n" 660e927ecb0SSuresh Siddha "thread id : %u\n", 661e927ecb0SSuresh Siddha c->socket_id, c->core_id, c->thread_id); 662e927ecb0SSuresh Siddha #endif 663e927ecb0SSuresh Siddha seq_printf(m,"\n"); 664e927ecb0SSuresh Siddha 6651da177e4SLinus Torvalds return 0; 6661da177e4SLinus Torvalds } 6671da177e4SLinus Torvalds 6681da177e4SLinus Torvalds static void * 6691da177e4SLinus Torvalds c_start (struct seq_file *m, loff_t *pos) 6701da177e4SLinus Torvalds { 6711da177e4SLinus Torvalds #ifdef CONFIG_SMP 6721da177e4SLinus Torvalds while (*pos < NR_CPUS && !cpu_isset(*pos, cpu_online_map)) 6731da177e4SLinus Torvalds ++*pos; 6741da177e4SLinus Torvalds #endif 6751da177e4SLinus Torvalds return *pos < NR_CPUS ? cpu_data(*pos) : NULL; 6761da177e4SLinus Torvalds } 6771da177e4SLinus Torvalds 6781da177e4SLinus Torvalds static void * 6791da177e4SLinus Torvalds c_next (struct seq_file *m, void *v, loff_t *pos) 6801da177e4SLinus Torvalds { 6811da177e4SLinus Torvalds ++*pos; 6821da177e4SLinus Torvalds return c_start(m, pos); 6831da177e4SLinus Torvalds } 6841da177e4SLinus Torvalds 6851da177e4SLinus Torvalds static void 6861da177e4SLinus Torvalds c_stop (struct seq_file *m, void *v) 6871da177e4SLinus Torvalds { 6881da177e4SLinus Torvalds } 6891da177e4SLinus Torvalds 6901da177e4SLinus Torvalds struct seq_operations cpuinfo_op = { 6911da177e4SLinus Torvalds .start = c_start, 6921da177e4SLinus Torvalds .next = c_next, 6931da177e4SLinus Torvalds .stop = c_stop, 6941da177e4SLinus Torvalds .show = show_cpuinfo 6951da177e4SLinus Torvalds }; 6961da177e4SLinus Torvalds 69776d08bb3STony Luck static char brandname[128]; 69876d08bb3STony Luck 69976d08bb3STony Luck static char * __cpuinit 70076d08bb3STony Luck get_model_name(__u8 family, __u8 model) 70176d08bb3STony Luck { 70276d08bb3STony Luck char brand[128]; 70376d08bb3STony Luck 70475f6a1deSTony Luck memcpy(brand, "Unknown", 8); 70576d08bb3STony Luck if (ia64_pal_get_brand_info(brand)) { 70676d08bb3STony Luck if (family == 0x7) 70776d08bb3STony Luck memcpy(brand, "Merced", 7); 70876d08bb3STony Luck else if (family == 0x1f) switch (model) { 70976d08bb3STony Luck case 0: memcpy(brand, "McKinley", 9); break; 71076d08bb3STony Luck case 1: memcpy(brand, "Madison", 8); break; 71176d08bb3STony Luck case 2: memcpy(brand, "Madison up to 9M cache", 23); break; 71275f6a1deSTony Luck } 71376d08bb3STony Luck } 71476d08bb3STony Luck if (brandname[0] == '\0') 71576d08bb3STony Luck return strcpy(brandname, brand); 71676d08bb3STony Luck else if (strcmp(brandname, brand) == 0) 71776d08bb3STony Luck return brandname; 71876d08bb3STony Luck else 71976d08bb3STony Luck return kstrdup(brand, GFP_KERNEL); 72076d08bb3STony Luck } 72176d08bb3STony Luck 722244fd545SChen, Kenneth W static void __cpuinit 7231da177e4SLinus Torvalds identify_cpu (struct cpuinfo_ia64 *c) 7241da177e4SLinus Torvalds { 7251da177e4SLinus Torvalds union { 7261da177e4SLinus Torvalds unsigned long bits[5]; 7271da177e4SLinus Torvalds struct { 7281da177e4SLinus Torvalds /* id 0 & 1: */ 7291da177e4SLinus Torvalds char vendor[16]; 7301da177e4SLinus Torvalds 7311da177e4SLinus Torvalds /* id 2 */ 7321da177e4SLinus Torvalds u64 ppn; /* processor serial number */ 7331da177e4SLinus Torvalds 7341da177e4SLinus Torvalds /* id 3: */ 7351da177e4SLinus Torvalds unsigned number : 8; 7361da177e4SLinus Torvalds unsigned revision : 8; 7371da177e4SLinus Torvalds unsigned model : 8; 7381da177e4SLinus Torvalds unsigned family : 8; 7391da177e4SLinus Torvalds unsigned archrev : 8; 7401da177e4SLinus Torvalds unsigned reserved : 24; 7411da177e4SLinus Torvalds 7421da177e4SLinus Torvalds /* id 4: */ 7431da177e4SLinus Torvalds u64 features; 7441da177e4SLinus Torvalds } field; 7451da177e4SLinus Torvalds } cpuid; 7461da177e4SLinus Torvalds pal_vm_info_1_u_t vm1; 7471da177e4SLinus Torvalds pal_vm_info_2_u_t vm2; 7481da177e4SLinus Torvalds pal_status_t status; 7491da177e4SLinus Torvalds unsigned long impl_va_msb = 50, phys_addr_size = 44; /* Itanium defaults */ 7501da177e4SLinus Torvalds int i; 7511da177e4SLinus Torvalds for (i = 0; i < 5; ++i) 7521da177e4SLinus Torvalds cpuid.bits[i] = ia64_get_cpuid(i); 7531da177e4SLinus Torvalds 7541da177e4SLinus Torvalds memcpy(c->vendor, cpuid.field.vendor, 16); 7551da177e4SLinus Torvalds #ifdef CONFIG_SMP 7561da177e4SLinus Torvalds c->cpu = smp_processor_id(); 757e927ecb0SSuresh Siddha 758e927ecb0SSuresh Siddha /* below default values will be overwritten by identify_siblings() 759e927ecb0SSuresh Siddha * for Multi-Threading/Multi-Core capable cpu's 760e927ecb0SSuresh Siddha */ 761e927ecb0SSuresh Siddha c->threads_per_core = c->cores_per_socket = c->num_log = 1; 762e927ecb0SSuresh Siddha c->socket_id = -1; 763e927ecb0SSuresh Siddha 764e927ecb0SSuresh Siddha identify_siblings(c); 7651da177e4SLinus Torvalds #endif 7661da177e4SLinus Torvalds c->ppn = cpuid.field.ppn; 7671da177e4SLinus Torvalds c->number = cpuid.field.number; 7681da177e4SLinus Torvalds c->revision = cpuid.field.revision; 7691da177e4SLinus Torvalds c->model = cpuid.field.model; 7701da177e4SLinus Torvalds c->family = cpuid.field.family; 7711da177e4SLinus Torvalds c->archrev = cpuid.field.archrev; 7721da177e4SLinus Torvalds c->features = cpuid.field.features; 77376d08bb3STony Luck c->model_name = get_model_name(c->family, c->model); 7741da177e4SLinus Torvalds 7751da177e4SLinus Torvalds status = ia64_pal_vm_summary(&vm1, &vm2); 7761da177e4SLinus Torvalds if (status == PAL_STATUS_SUCCESS) { 7771da177e4SLinus Torvalds impl_va_msb = vm2.pal_vm_info_2_s.impl_va_msb; 7781da177e4SLinus Torvalds phys_addr_size = vm1.pal_vm_info_1_s.phys_add_size; 7791da177e4SLinus Torvalds } 7801da177e4SLinus Torvalds c->unimpl_va_mask = ~((7L<<61) | ((1L << (impl_va_msb + 1)) - 1)); 7811da177e4SLinus Torvalds c->unimpl_pa_mask = ~((1L<<63) | ((1L << phys_addr_size) - 1)); 7821da177e4SLinus Torvalds } 7831da177e4SLinus Torvalds 7841da177e4SLinus Torvalds void 7851da177e4SLinus Torvalds setup_per_cpu_areas (void) 7861da177e4SLinus Torvalds { 7871da177e4SLinus Torvalds /* start_kernel() requires this... */ 788a6b14fa6SAshok Raj #ifdef CONFIG_ACPI_HOTPLUG_CPU 789a6b14fa6SAshok Raj prefill_possible_map(); 790a6b14fa6SAshok Raj #endif 7911da177e4SLinus Torvalds } 7921da177e4SLinus Torvalds 79308357f82SZoltan Menyhart /* 79408357f82SZoltan Menyhart * Calculate the max. cache line size. 79508357f82SZoltan Menyhart * 79608357f82SZoltan Menyhart * In addition, the minimum of the i-cache stride sizes is calculated for 79708357f82SZoltan Menyhart * "flush_icache_range()". 79808357f82SZoltan Menyhart */ 799244fd545SChen, Kenneth W static void __cpuinit 8001da177e4SLinus Torvalds get_max_cacheline_size (void) 8011da177e4SLinus Torvalds { 8021da177e4SLinus Torvalds unsigned long line_size, max = 1; 803198e2f18Sakpm@osdl.org unsigned int cache_size = 0; 8041da177e4SLinus Torvalds u64 l, levels, unique_caches; 8051da177e4SLinus Torvalds pal_cache_config_info_t cci; 8061da177e4SLinus Torvalds s64 status; 8071da177e4SLinus Torvalds 8081da177e4SLinus Torvalds status = ia64_pal_cache_summary(&levels, &unique_caches); 8091da177e4SLinus Torvalds if (status != 0) { 8101da177e4SLinus Torvalds printk(KERN_ERR "%s: ia64_pal_cache_summary() failed (status=%ld)\n", 8111da177e4SLinus Torvalds __FUNCTION__, status); 8121da177e4SLinus Torvalds max = SMP_CACHE_BYTES; 81308357f82SZoltan Menyhart /* Safest setup for "flush_icache_range()" */ 81408357f82SZoltan Menyhart ia64_i_cache_stride_shift = I_CACHE_STRIDE_SHIFT; 8151da177e4SLinus Torvalds goto out; 8161da177e4SLinus Torvalds } 8171da177e4SLinus Torvalds 8181da177e4SLinus Torvalds for (l = 0; l < levels; ++l) { 8191da177e4SLinus Torvalds status = ia64_pal_cache_config_info(l, /* cache_type (data_or_unified)= */ 2, 8201da177e4SLinus Torvalds &cci); 8211da177e4SLinus Torvalds if (status != 0) { 8221da177e4SLinus Torvalds printk(KERN_ERR 82308357f82SZoltan Menyhart "%s: ia64_pal_cache_config_info(l=%lu, 2) failed (status=%ld)\n", 8241da177e4SLinus Torvalds __FUNCTION__, l, status); 8251da177e4SLinus Torvalds max = SMP_CACHE_BYTES; 82608357f82SZoltan Menyhart /* The safest setup for "flush_icache_range()" */ 82708357f82SZoltan Menyhart cci.pcci_stride = I_CACHE_STRIDE_SHIFT; 82808357f82SZoltan Menyhart cci.pcci_unified = 1; 8291da177e4SLinus Torvalds } 8301da177e4SLinus Torvalds line_size = 1 << cci.pcci_line_size; 8311da177e4SLinus Torvalds if (line_size > max) 8321da177e4SLinus Torvalds max = line_size; 833198e2f18Sakpm@osdl.org if (cache_size < cci.pcci_cache_size) 834198e2f18Sakpm@osdl.org cache_size = cci.pcci_cache_size; 83508357f82SZoltan Menyhart if (!cci.pcci_unified) { 83608357f82SZoltan Menyhart status = ia64_pal_cache_config_info(l, 83708357f82SZoltan Menyhart /* cache_type (instruction)= */ 1, 83808357f82SZoltan Menyhart &cci); 83908357f82SZoltan Menyhart if (status != 0) { 84008357f82SZoltan Menyhart printk(KERN_ERR 84108357f82SZoltan Menyhart "%s: ia64_pal_cache_config_info(l=%lu, 1) failed (status=%ld)\n", 84208357f82SZoltan Menyhart __FUNCTION__, l, status); 84308357f82SZoltan Menyhart /* The safest setup for "flush_icache_range()" */ 84408357f82SZoltan Menyhart cci.pcci_stride = I_CACHE_STRIDE_SHIFT; 84508357f82SZoltan Menyhart } 84608357f82SZoltan Menyhart } 84708357f82SZoltan Menyhart if (cci.pcci_stride < ia64_i_cache_stride_shift) 84808357f82SZoltan Menyhart ia64_i_cache_stride_shift = cci.pcci_stride; 8491da177e4SLinus Torvalds } 8501da177e4SLinus Torvalds out: 851198e2f18Sakpm@osdl.org #ifdef CONFIG_SMP 852198e2f18Sakpm@osdl.org max_cache_size = max(max_cache_size, cache_size); 853198e2f18Sakpm@osdl.org #endif 8541da177e4SLinus Torvalds if (max > ia64_max_cacheline_size) 8551da177e4SLinus Torvalds ia64_max_cacheline_size = max; 8561da177e4SLinus Torvalds } 8571da177e4SLinus Torvalds 8581da177e4SLinus Torvalds /* 8591da177e4SLinus Torvalds * cpu_init() initializes state that is per-CPU. This function acts 8601da177e4SLinus Torvalds * as a 'CPU state barrier', nothing should get across. 8611da177e4SLinus Torvalds */ 862244fd545SChen, Kenneth W void __cpuinit 8631da177e4SLinus Torvalds cpu_init (void) 8641da177e4SLinus Torvalds { 865244fd545SChen, Kenneth W extern void __cpuinit ia64_mmu_init (void *); 8661da177e4SLinus Torvalds unsigned long num_phys_stacked; 8671da177e4SLinus Torvalds pal_vm_info_2_u_t vmi; 8681da177e4SLinus Torvalds unsigned int max_ctx; 8691da177e4SLinus Torvalds struct cpuinfo_ia64 *cpu_info; 8701da177e4SLinus Torvalds void *cpu_data; 8711da177e4SLinus Torvalds 8721da177e4SLinus Torvalds cpu_data = per_cpu_init(); 8731da177e4SLinus Torvalds 8741da177e4SLinus Torvalds /* 8751da177e4SLinus Torvalds * We set ar.k3 so that assembly code in MCA handler can compute 8761da177e4SLinus Torvalds * physical addresses of per cpu variables with a simple: 8771da177e4SLinus Torvalds * phys = ar.k3 + &per_cpu_var 8781da177e4SLinus Torvalds */ 8791da177e4SLinus Torvalds ia64_set_kr(IA64_KR_PER_CPU_DATA, 8801da177e4SLinus Torvalds ia64_tpa(cpu_data) - (long) __per_cpu_start); 8811da177e4SLinus Torvalds 8821da177e4SLinus Torvalds get_max_cacheline_size(); 8831da177e4SLinus Torvalds 8841da177e4SLinus Torvalds /* 8851da177e4SLinus Torvalds * We can't pass "local_cpu_data" to identify_cpu() because we haven't called 8861da177e4SLinus Torvalds * ia64_mmu_init() yet. And we can't call ia64_mmu_init() first because it 8871da177e4SLinus Torvalds * depends on the data returned by identify_cpu(). We break the dependency by 8881da177e4SLinus Torvalds * accessing cpu_data() through the canonical per-CPU address. 8891da177e4SLinus Torvalds */ 8901da177e4SLinus Torvalds cpu_info = cpu_data + ((char *) &__ia64_per_cpu_var(cpu_info) - __per_cpu_start); 8911da177e4SLinus Torvalds identify_cpu(cpu_info); 8921da177e4SLinus Torvalds 8931da177e4SLinus Torvalds #ifdef CONFIG_MCKINLEY 8941da177e4SLinus Torvalds { 8951da177e4SLinus Torvalds # define FEATURE_SET 16 8961da177e4SLinus Torvalds struct ia64_pal_retval iprv; 8971da177e4SLinus Torvalds 8981da177e4SLinus Torvalds if (cpu_info->family == 0x1f) { 8991da177e4SLinus Torvalds PAL_CALL_PHYS(iprv, PAL_PROC_GET_FEATURES, 0, FEATURE_SET, 0); 9001da177e4SLinus Torvalds if ((iprv.status == 0) && (iprv.v0 & 0x80) && (iprv.v2 & 0x80)) 9011da177e4SLinus Torvalds PAL_CALL_PHYS(iprv, PAL_PROC_SET_FEATURES, 9021da177e4SLinus Torvalds (iprv.v1 | 0x80), FEATURE_SET, 0); 9031da177e4SLinus Torvalds } 9041da177e4SLinus Torvalds } 9051da177e4SLinus Torvalds #endif 9061da177e4SLinus Torvalds 9071da177e4SLinus Torvalds /* Clear the stack memory reserved for pt_regs: */ 9086450578fSAl Viro memset(task_pt_regs(current), 0, sizeof(struct pt_regs)); 9091da177e4SLinus Torvalds 9101da177e4SLinus Torvalds ia64_set_kr(IA64_KR_FPU_OWNER, 0); 9111da177e4SLinus Torvalds 9121da177e4SLinus Torvalds /* 9131da177e4SLinus Torvalds * Initialize the page-table base register to a global 9141da177e4SLinus Torvalds * directory with all zeroes. This ensure that we can handle 9151da177e4SLinus Torvalds * TLB-misses to user address-space even before we created the 9161da177e4SLinus Torvalds * first user address-space. This may happen, e.g., due to 9171da177e4SLinus Torvalds * aggressive use of lfetch.fault. 9181da177e4SLinus Torvalds */ 9191da177e4SLinus Torvalds ia64_set_kr(IA64_KR_PT_BASE, __pa(ia64_imva(empty_zero_page))); 9201da177e4SLinus Torvalds 9211da177e4SLinus Torvalds /* 92286ebacd3STony Luck * Initialize default control register to defer speculative faults except 92386ebacd3STony Luck * for those arising from TLB misses, which are not deferred. The 9241da177e4SLinus Torvalds * kernel MUST NOT depend on a particular setting of these bits (in other words, 9251da177e4SLinus Torvalds * the kernel must have recovery code for all speculative accesses). Turn on 9261da177e4SLinus Torvalds * dcr.lc as per recommendation by the architecture team. Most IA-32 apps 9271da177e4SLinus Torvalds * shouldn't be affected by this (moral: keep your ia32 locks aligned and you'll 9281da177e4SLinus Torvalds * be fine). 9291da177e4SLinus Torvalds */ 9301da177e4SLinus Torvalds ia64_setreg(_IA64_REG_CR_DCR, ( IA64_DCR_DP | IA64_DCR_DK | IA64_DCR_DX | IA64_DCR_DR 9311da177e4SLinus Torvalds | IA64_DCR_DA | IA64_DCR_DD | IA64_DCR_LC)); 9321da177e4SLinus Torvalds atomic_inc(&init_mm.mm_count); 9331da177e4SLinus Torvalds current->active_mm = &init_mm; 9341da177e4SLinus Torvalds if (current->mm) 9351da177e4SLinus Torvalds BUG(); 9361da177e4SLinus Torvalds 9371da177e4SLinus Torvalds ia64_mmu_init(ia64_imva(cpu_data)); 9381da177e4SLinus Torvalds ia64_mca_cpu_init(ia64_imva(cpu_data)); 9391da177e4SLinus Torvalds 9401da177e4SLinus Torvalds #ifdef CONFIG_IA32_SUPPORT 9411da177e4SLinus Torvalds ia32_cpu_init(); 9421da177e4SLinus Torvalds #endif 9431da177e4SLinus Torvalds 9441da177e4SLinus Torvalds /* Clear ITC to eliminiate sched_clock() overflows in human time. */ 9451da177e4SLinus Torvalds ia64_set_itc(0); 9461da177e4SLinus Torvalds 9471da177e4SLinus Torvalds /* disable all local interrupt sources: */ 9481da177e4SLinus Torvalds ia64_set_itv(1 << 16); 9491da177e4SLinus Torvalds ia64_set_lrr0(1 << 16); 9501da177e4SLinus Torvalds ia64_set_lrr1(1 << 16); 9511da177e4SLinus Torvalds ia64_setreg(_IA64_REG_CR_PMV, 1 << 16); 9521da177e4SLinus Torvalds ia64_setreg(_IA64_REG_CR_CMCV, 1 << 16); 9531da177e4SLinus Torvalds 9541da177e4SLinus Torvalds /* clear TPR & XTP to enable all interrupt classes: */ 9551da177e4SLinus Torvalds ia64_setreg(_IA64_REG_CR_TPR, 0); 9561da177e4SLinus Torvalds #ifdef CONFIG_SMP 9571da177e4SLinus Torvalds normal_xtp(); 9581da177e4SLinus Torvalds #endif 9591da177e4SLinus Torvalds 9601da177e4SLinus Torvalds /* set ia64_ctx.max_rid to the maximum RID that is supported by all CPUs: */ 9611da177e4SLinus Torvalds if (ia64_pal_vm_summary(NULL, &vmi) == 0) 9621da177e4SLinus Torvalds max_ctx = (1U << (vmi.pal_vm_info_2_s.rid_size - 3)) - 1; 9631da177e4SLinus Torvalds else { 9641da177e4SLinus Torvalds printk(KERN_WARNING "cpu_init: PAL VM summary failed, assuming 18 RID bits\n"); 9651da177e4SLinus Torvalds max_ctx = (1U << 15) - 1; /* use architected minimum */ 9661da177e4SLinus Torvalds } 9671da177e4SLinus Torvalds while (max_ctx < ia64_ctx.max_ctx) { 9681da177e4SLinus Torvalds unsigned int old = ia64_ctx.max_ctx; 9691da177e4SLinus Torvalds if (cmpxchg(&ia64_ctx.max_ctx, old, max_ctx) == old) 9701da177e4SLinus Torvalds break; 9711da177e4SLinus Torvalds } 9721da177e4SLinus Torvalds 9731da177e4SLinus Torvalds if (ia64_pal_rse_info(&num_phys_stacked, NULL) != 0) { 9741da177e4SLinus Torvalds printk(KERN_WARNING "cpu_init: PAL RSE info failed; assuming 96 physical " 9751da177e4SLinus Torvalds "stacked regs\n"); 9761da177e4SLinus Torvalds num_phys_stacked = 96; 9771da177e4SLinus Torvalds } 9781da177e4SLinus Torvalds /* size of physical stacked register partition plus 8 bytes: */ 9791da177e4SLinus Torvalds __get_cpu_var(ia64_phys_stacked_size_p8) = num_phys_stacked*8 + 8; 9801da177e4SLinus Torvalds platform_cpu_init(); 9816c4fa560SVenkatesh Pallipadi pm_idle = default_idle; 9821da177e4SLinus Torvalds } 9831da177e4SLinus Torvalds 9844dc7a0bbSIngo Molnar /* 9854dc7a0bbSIngo Molnar * On SMP systems, when the scheduler does migration-cost autodetection, 9864dc7a0bbSIngo Molnar * it needs a way to flush as much of the CPU's caches as possible. 9874dc7a0bbSIngo Molnar */ 9884dc7a0bbSIngo Molnar void sched_cacheflush(void) 9894dc7a0bbSIngo Molnar { 9904dc7a0bbSIngo Molnar ia64_sal_cache_flush(3); 9914dc7a0bbSIngo Molnar } 9924dc7a0bbSIngo Molnar 993244fd545SChen, Kenneth W void __init 9941da177e4SLinus Torvalds check_bugs (void) 9951da177e4SLinus Torvalds { 9961da177e4SLinus Torvalds ia64_patch_mckinley_e9((unsigned long) __start___mckinley_e9_bundles, 9971da177e4SLinus Torvalds (unsigned long) __end___mckinley_e9_bundles); 9981da177e4SLinus Torvalds } 9993ed3bce8SMatt Domsch 10003ed3bce8SMatt Domsch static int __init run_dmi_scan(void) 10013ed3bce8SMatt Domsch { 10023ed3bce8SMatt Domsch dmi_scan_machine(); 10033ed3bce8SMatt Domsch return 0; 10043ed3bce8SMatt Domsch } 10053ed3bce8SMatt Domsch core_initcall(run_dmi_scan); 1006