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 }; 94d719948eSTony Luck extern char _text[], _end[], _etext[]; 95be379124SKhalid Aziz 961da177e4SLinus Torvalds unsigned long ia64_max_cacheline_size; 97e1531b42SJohn W. Linville 98e1531b42SJohn W. Linville int dma_get_cache_alignment(void) 99e1531b42SJohn W. Linville { 100e1531b42SJohn W. Linville return ia64_max_cacheline_size; 101e1531b42SJohn W. Linville } 102e1531b42SJohn W. Linville EXPORT_SYMBOL(dma_get_cache_alignment); 103e1531b42SJohn W. Linville 1041da177e4SLinus Torvalds unsigned long ia64_iobase; /* virtual address for I/O accesses */ 1051da177e4SLinus Torvalds EXPORT_SYMBOL(ia64_iobase); 1061da177e4SLinus Torvalds struct io_space io_space[MAX_IO_SPACES]; 1071da177e4SLinus Torvalds EXPORT_SYMBOL(io_space); 1081da177e4SLinus Torvalds unsigned int num_io_spaces; 1091da177e4SLinus Torvalds 1101da177e4SLinus Torvalds /* 11108357f82SZoltan Menyhart * "flush_icache_range()" needs to know what processor dependent stride size to use 11208357f82SZoltan Menyhart * when it makes i-cache(s) coherent with d-caches. 11308357f82SZoltan Menyhart */ 11408357f82SZoltan Menyhart #define I_CACHE_STRIDE_SHIFT 5 /* Safest way to go: 32 bytes by 32 bytes */ 11508357f82SZoltan Menyhart unsigned long ia64_i_cache_stride_shift = ~0; 11608357f82SZoltan Menyhart 11708357f82SZoltan Menyhart /* 1181da177e4SLinus Torvalds * The merge_mask variable needs to be set to (max(iommu_page_size(iommu)) - 1). This 1191da177e4SLinus Torvalds * mask specifies a mask of address bits that must be 0 in order for two buffers to be 1201da177e4SLinus Torvalds * mergeable by the I/O MMU (i.e., the end address of the first buffer and the start 1211da177e4SLinus Torvalds * address of the second buffer must be aligned to (merge_mask+1) in order to be 1221da177e4SLinus Torvalds * mergeable). By default, we assume there is no I/O MMU which can merge physically 1231da177e4SLinus Torvalds * discontiguous buffers, so we set the merge_mask to ~0UL, which corresponds to a iommu 1241da177e4SLinus Torvalds * page-size of 2^64. 1251da177e4SLinus Torvalds */ 1261da177e4SLinus Torvalds unsigned long ia64_max_iommu_merge_mask = ~0UL; 1271da177e4SLinus Torvalds EXPORT_SYMBOL(ia64_max_iommu_merge_mask); 1281da177e4SLinus Torvalds 1291da177e4SLinus Torvalds /* 1301da177e4SLinus Torvalds * We use a special marker for the end of memory and it uses the extra (+1) slot 1311da177e4SLinus Torvalds */ 132dae28066SChen, Kenneth W struct rsvd_region rsvd_region[IA64_MAX_RSVD_REGIONS + 1] __initdata; 133dae28066SChen, Kenneth W int num_rsvd_regions __initdata; 1341da177e4SLinus Torvalds 1351da177e4SLinus Torvalds 1361da177e4SLinus Torvalds /* 1371da177e4SLinus Torvalds * Filter incoming memory segments based on the primitive map created from the boot 1381da177e4SLinus Torvalds * parameters. Segments contained in the map are removed from the memory ranges. A 1391da177e4SLinus Torvalds * caller-specified function is called with the memory ranges that remain after filtering. 1401da177e4SLinus Torvalds * This routine does not assume the incoming segments are sorted. 1411da177e4SLinus Torvalds */ 142dae28066SChen, Kenneth W int __init 1431da177e4SLinus Torvalds filter_rsvd_memory (unsigned long start, unsigned long end, void *arg) 1441da177e4SLinus Torvalds { 1451da177e4SLinus Torvalds unsigned long range_start, range_end, prev_start; 1461da177e4SLinus Torvalds void (*func)(unsigned long, unsigned long, int); 1471da177e4SLinus Torvalds int i; 1481da177e4SLinus Torvalds 1491da177e4SLinus Torvalds #if IGNORE_PFN0 1501da177e4SLinus Torvalds if (start == PAGE_OFFSET) { 1511da177e4SLinus Torvalds printk(KERN_WARNING "warning: skipping physical page 0\n"); 1521da177e4SLinus Torvalds start += PAGE_SIZE; 1531da177e4SLinus Torvalds if (start >= end) return 0; 1541da177e4SLinus Torvalds } 1551da177e4SLinus Torvalds #endif 1561da177e4SLinus Torvalds /* 1571da177e4SLinus Torvalds * lowest possible address(walker uses virtual) 1581da177e4SLinus Torvalds */ 1591da177e4SLinus Torvalds prev_start = PAGE_OFFSET; 1601da177e4SLinus Torvalds func = arg; 1611da177e4SLinus Torvalds 1621da177e4SLinus Torvalds for (i = 0; i < num_rsvd_regions; ++i) { 1631da177e4SLinus Torvalds range_start = max(start, prev_start); 1641da177e4SLinus Torvalds range_end = min(end, rsvd_region[i].start); 1651da177e4SLinus Torvalds 1661da177e4SLinus Torvalds if (range_start < range_end) 1671da177e4SLinus Torvalds call_pernode_memory(__pa(range_start), range_end - range_start, func); 1681da177e4SLinus Torvalds 1691da177e4SLinus Torvalds /* nothing more available in this segment */ 1701da177e4SLinus Torvalds if (range_end == end) return 0; 1711da177e4SLinus Torvalds 1721da177e4SLinus Torvalds prev_start = rsvd_region[i].end; 1731da177e4SLinus Torvalds } 1741da177e4SLinus Torvalds /* end of memory marker allows full processing inside loop body */ 1751da177e4SLinus Torvalds return 0; 1761da177e4SLinus Torvalds } 1771da177e4SLinus Torvalds 178dae28066SChen, Kenneth W static void __init 1791da177e4SLinus Torvalds sort_regions (struct rsvd_region *rsvd_region, int max) 1801da177e4SLinus Torvalds { 1811da177e4SLinus Torvalds int j; 1821da177e4SLinus Torvalds 1831da177e4SLinus Torvalds /* simple bubble sorting */ 1841da177e4SLinus Torvalds while (max--) { 1851da177e4SLinus Torvalds for (j = 0; j < max; ++j) { 1861da177e4SLinus Torvalds if (rsvd_region[j].start > rsvd_region[j+1].start) { 1871da177e4SLinus Torvalds struct rsvd_region tmp; 1881da177e4SLinus Torvalds tmp = rsvd_region[j]; 1891da177e4SLinus Torvalds rsvd_region[j] = rsvd_region[j + 1]; 1901da177e4SLinus Torvalds rsvd_region[j + 1] = tmp; 1911da177e4SLinus Torvalds } 1921da177e4SLinus Torvalds } 1931da177e4SLinus Torvalds } 1941da177e4SLinus Torvalds } 1951da177e4SLinus Torvalds 196be379124SKhalid Aziz /* 197be379124SKhalid Aziz * Request address space for all standard resources 198be379124SKhalid Aziz */ 199be379124SKhalid Aziz static int __init register_memory(void) 200be379124SKhalid Aziz { 201be379124SKhalid Aziz code_resource.start = ia64_tpa(_text); 202be379124SKhalid Aziz code_resource.end = ia64_tpa(_etext) - 1; 203be379124SKhalid Aziz data_resource.start = ia64_tpa(_etext); 204d719948eSTony Luck data_resource.end = ia64_tpa(_end) - 1; 205be379124SKhalid Aziz efi_initialize_iomem_resources(&code_resource, &data_resource); 206be379124SKhalid Aziz 207be379124SKhalid Aziz return 0; 208be379124SKhalid Aziz } 209be379124SKhalid Aziz 210be379124SKhalid Aziz __initcall(register_memory); 211be379124SKhalid Aziz 2121da177e4SLinus Torvalds /** 2131da177e4SLinus Torvalds * reserve_memory - setup reserved memory areas 2141da177e4SLinus Torvalds * 2151da177e4SLinus Torvalds * Setup the reserved memory areas set aside for the boot parameters, 2161da177e4SLinus Torvalds * initrd, etc. There are currently %IA64_MAX_RSVD_REGIONS defined, 2171da177e4SLinus Torvalds * see include/asm-ia64/meminit.h if you need to define more. 2181da177e4SLinus Torvalds */ 219dae28066SChen, Kenneth W void __init 2201da177e4SLinus Torvalds reserve_memory (void) 2211da177e4SLinus Torvalds { 2221da177e4SLinus Torvalds int n = 0; 2231da177e4SLinus Torvalds 2241da177e4SLinus Torvalds /* 2251da177e4SLinus Torvalds * none of the entries in this table overlap 2261da177e4SLinus Torvalds */ 2271da177e4SLinus Torvalds rsvd_region[n].start = (unsigned long) ia64_boot_param; 2281da177e4SLinus Torvalds rsvd_region[n].end = rsvd_region[n].start + sizeof(*ia64_boot_param); 2291da177e4SLinus Torvalds n++; 2301da177e4SLinus Torvalds 2311da177e4SLinus Torvalds rsvd_region[n].start = (unsigned long) __va(ia64_boot_param->efi_memmap); 2321da177e4SLinus Torvalds rsvd_region[n].end = rsvd_region[n].start + ia64_boot_param->efi_memmap_size; 2331da177e4SLinus Torvalds n++; 2341da177e4SLinus Torvalds 2351da177e4SLinus Torvalds rsvd_region[n].start = (unsigned long) __va(ia64_boot_param->command_line); 2361da177e4SLinus Torvalds rsvd_region[n].end = (rsvd_region[n].start 2371da177e4SLinus Torvalds + strlen(__va(ia64_boot_param->command_line)) + 1); 2381da177e4SLinus Torvalds n++; 2391da177e4SLinus Torvalds 2401da177e4SLinus Torvalds rsvd_region[n].start = (unsigned long) ia64_imva((void *)KERNEL_START); 2411da177e4SLinus Torvalds rsvd_region[n].end = (unsigned long) ia64_imva(_end); 2421da177e4SLinus Torvalds n++; 2431da177e4SLinus Torvalds 2441da177e4SLinus Torvalds #ifdef CONFIG_BLK_DEV_INITRD 2451da177e4SLinus Torvalds if (ia64_boot_param->initrd_start) { 2461da177e4SLinus Torvalds rsvd_region[n].start = (unsigned long)__va(ia64_boot_param->initrd_start); 2471da177e4SLinus Torvalds rsvd_region[n].end = rsvd_region[n].start + ia64_boot_param->initrd_size; 2481da177e4SLinus Torvalds n++; 2491da177e4SLinus Torvalds } 2501da177e4SLinus Torvalds #endif 2511da177e4SLinus Torvalds 252cee87af2SMagnus Damm #ifdef CONFIG_PROC_VMCORE 253cee87af2SMagnus Damm if (reserve_elfcorehdr(&rsvd_region[n].start, 254cee87af2SMagnus Damm &rsvd_region[n].end) == 0) 255cee87af2SMagnus Damm n++; 256cee87af2SMagnus Damm #endif 257cee87af2SMagnus Damm 258d8c97d5fSTony Luck efi_memmap_init(&rsvd_region[n].start, &rsvd_region[n].end); 259d8c97d5fSTony Luck n++; 260d8c97d5fSTony Luck 261a7956113SZou Nan hai #ifdef CONFIG_KEXEC 262a7956113SZou Nan hai /* crashkernel=size@offset specifies the size to reserve for a crash 263ad1c3ba7SHorms * kernel. If offset is 0, then it is determined automatically. 264a7956113SZou Nan hai * By reserving this memory we guarantee that linux never set's it 265a7956113SZou Nan hai * up as a DMA target.Useful for holding code to do something 266a7956113SZou Nan hai * appropriate after a kernel panic. 267a7956113SZou Nan hai */ 268a7956113SZou Nan hai { 269a8d91b84SAlon Bar-Lev char *from = strstr(boot_command_line, "crashkernel="); 270a7956113SZou Nan hai unsigned long base, size; 271a7956113SZou Nan hai if (from) { 272a7956113SZou Nan hai size = memparse(from + 12, &from); 273ad1c3ba7SHorms if (*from == '@') 274ad1c3ba7SHorms base = memparse(from+1, &from); 275ad1c3ba7SHorms else 276ad1c3ba7SHorms base = 0; 277a7956113SZou Nan hai if (size) { 278ad1c3ba7SHorms if (!base) { 279a7956113SZou Nan hai sort_regions(rsvd_region, n); 280a7956113SZou Nan hai base = kdump_find_rsvd_region(size, 281a7956113SZou Nan hai rsvd_region, n); 282ad1c3ba7SHorms } 283a7956113SZou Nan hai if (base != ~0UL) { 284a7956113SZou Nan hai rsvd_region[n].start = 285a7956113SZou Nan hai (unsigned long)__va(base); 286a7956113SZou Nan hai rsvd_region[n].end = 287a7956113SZou Nan hai (unsigned long)__va(base + size); 288a7956113SZou Nan hai n++; 289a7956113SZou Nan hai crashk_res.start = base; 290a7956113SZou Nan hai crashk_res.end = base + size - 1; 291a7956113SZou Nan hai } 292a7956113SZou Nan hai } 293a7956113SZou Nan hai } 294a7956113SZou Nan hai efi_memmap_res.start = ia64_boot_param->efi_memmap; 295a7956113SZou Nan hai efi_memmap_res.end = efi_memmap_res.start + 296a7956113SZou Nan hai ia64_boot_param->efi_memmap_size; 297a7956113SZou Nan hai boot_param_res.start = __pa(ia64_boot_param); 298a7956113SZou Nan hai boot_param_res.end = boot_param_res.start + 299a7956113SZou Nan hai sizeof(*ia64_boot_param); 300a7956113SZou Nan hai } 301a7956113SZou Nan hai #endif 3021da177e4SLinus Torvalds /* end of memory marker */ 3031da177e4SLinus Torvalds rsvd_region[n].start = ~0UL; 3041da177e4SLinus Torvalds rsvd_region[n].end = ~0UL; 3051da177e4SLinus Torvalds n++; 3061da177e4SLinus Torvalds 3071da177e4SLinus Torvalds num_rsvd_regions = n; 3085eb1d63fSAlex Williamson BUG_ON(IA64_MAX_RSVD_REGIONS + 1 < n); 3091da177e4SLinus Torvalds 3101da177e4SLinus Torvalds sort_regions(rsvd_region, num_rsvd_regions); 3111da177e4SLinus Torvalds } 3121da177e4SLinus Torvalds 313a7956113SZou Nan hai 3141da177e4SLinus Torvalds /** 3151da177e4SLinus Torvalds * find_initrd - get initrd parameters from the boot parameter structure 3161da177e4SLinus Torvalds * 3171da177e4SLinus Torvalds * Grab the initrd start and end from the boot parameter struct given us by 3181da177e4SLinus Torvalds * the boot loader. 3191da177e4SLinus Torvalds */ 320dae28066SChen, Kenneth W void __init 3211da177e4SLinus Torvalds find_initrd (void) 3221da177e4SLinus Torvalds { 3231da177e4SLinus Torvalds #ifdef CONFIG_BLK_DEV_INITRD 3241da177e4SLinus Torvalds if (ia64_boot_param->initrd_start) { 3251da177e4SLinus Torvalds initrd_start = (unsigned long)__va(ia64_boot_param->initrd_start); 3261da177e4SLinus Torvalds initrd_end = initrd_start+ia64_boot_param->initrd_size; 3271da177e4SLinus Torvalds 3281da177e4SLinus Torvalds printk(KERN_INFO "Initial ramdisk at: 0x%lx (%lu bytes)\n", 3291da177e4SLinus Torvalds initrd_start, ia64_boot_param->initrd_size); 3301da177e4SLinus Torvalds } 3311da177e4SLinus Torvalds #endif 3321da177e4SLinus Torvalds } 3331da177e4SLinus Torvalds 3341da177e4SLinus Torvalds static void __init 3351da177e4SLinus Torvalds io_port_init (void) 3361da177e4SLinus Torvalds { 3371da177e4SLinus Torvalds unsigned long phys_iobase; 3381da177e4SLinus Torvalds 3391da177e4SLinus Torvalds /* 34044c45120SBjorn Helgaas * Set `iobase' based on the EFI memory map or, failing that, the 34144c45120SBjorn Helgaas * value firmware left in ar.k0. 3421da177e4SLinus Torvalds * 34344c45120SBjorn Helgaas * Note that in ia32 mode, IN/OUT instructions use ar.k0 to compute 34444c45120SBjorn Helgaas * the port's virtual address, so ia32_load_state() loads it with a 34544c45120SBjorn Helgaas * user virtual address. But in ia64 mode, glibc uses the 34644c45120SBjorn Helgaas * *physical* address in ar.k0 to mmap the appropriate area from 34744c45120SBjorn Helgaas * /dev/mem, and the inX()/outX() interfaces use MMIO. In both 34844c45120SBjorn Helgaas * cases, user-mode can only use the legacy 0-64K I/O port space. 34944c45120SBjorn Helgaas * 35044c45120SBjorn Helgaas * ar.k0 is not involved in kernel I/O port accesses, which can use 35144c45120SBjorn Helgaas * any of the I/O port spaces and are done via MMIO using the 35244c45120SBjorn Helgaas * virtual mmio_base from the appropriate io_space[]. 3531da177e4SLinus Torvalds */ 3541da177e4SLinus Torvalds phys_iobase = efi_get_iobase(); 35544c45120SBjorn Helgaas if (!phys_iobase) { 3561da177e4SLinus Torvalds phys_iobase = ia64_get_kr(IA64_KR_IO_BASE); 35744c45120SBjorn Helgaas printk(KERN_INFO "No I/O port range found in EFI memory map, " 35844c45120SBjorn Helgaas "falling back to AR.KR0 (0x%lx)\n", phys_iobase); 3591da177e4SLinus Torvalds } 3601da177e4SLinus Torvalds ia64_iobase = (unsigned long) ioremap(phys_iobase, 0); 36144c45120SBjorn Helgaas ia64_set_kr(IA64_KR_IO_BASE, __pa(ia64_iobase)); 3621da177e4SLinus Torvalds 3631da177e4SLinus Torvalds /* setup legacy IO port space */ 3641da177e4SLinus Torvalds io_space[0].mmio_base = ia64_iobase; 3651da177e4SLinus Torvalds io_space[0].sparse = 1; 3661da177e4SLinus Torvalds num_io_spaces = 1; 3671da177e4SLinus Torvalds } 3681da177e4SLinus Torvalds 3691da177e4SLinus Torvalds /** 3701da177e4SLinus Torvalds * early_console_setup - setup debugging console 3711da177e4SLinus Torvalds * 3721da177e4SLinus Torvalds * Consoles started here require little enough setup that we can start using 3731da177e4SLinus Torvalds * them very early in the boot process, either right after the machine 3741da177e4SLinus Torvalds * vector initialization, or even before if the drivers can detect their hw. 3751da177e4SLinus Torvalds * 3761da177e4SLinus Torvalds * Returns non-zero if a console couldn't be setup. 3771da177e4SLinus Torvalds */ 3781da177e4SLinus Torvalds static inline int __init 3791da177e4SLinus Torvalds early_console_setup (char *cmdline) 3801da177e4SLinus Torvalds { 38166b7f8a3SMark Maule int earlycons = 0; 38266b7f8a3SMark Maule 3831da177e4SLinus Torvalds #ifdef CONFIG_SERIAL_SGI_L1_CONSOLE 3841da177e4SLinus Torvalds { 3851da177e4SLinus Torvalds extern int sn_serial_console_early_setup(void); 3861da177e4SLinus Torvalds if (!sn_serial_console_early_setup()) 38766b7f8a3SMark Maule earlycons++; 3881da177e4SLinus Torvalds } 3891da177e4SLinus Torvalds #endif 3901da177e4SLinus Torvalds #ifdef CONFIG_EFI_PCDP 3911da177e4SLinus Torvalds if (!efi_setup_pcdp_console(cmdline)) 39266b7f8a3SMark Maule earlycons++; 3931da177e4SLinus Torvalds #endif 3941da177e4SLinus Torvalds #ifdef CONFIG_SERIAL_8250_CONSOLE 3951da177e4SLinus Torvalds if (!early_serial_console_init(cmdline)) 39666b7f8a3SMark Maule earlycons++; 3971da177e4SLinus Torvalds #endif 3981da177e4SLinus Torvalds 39966b7f8a3SMark Maule return (earlycons) ? 0 : -1; 4001da177e4SLinus Torvalds } 4011da177e4SLinus Torvalds 4021da177e4SLinus Torvalds static inline void 4031da177e4SLinus Torvalds mark_bsp_online (void) 4041da177e4SLinus Torvalds { 4051da177e4SLinus Torvalds #ifdef CONFIG_SMP 4061da177e4SLinus Torvalds /* If we register an early console, allow CPU 0 to printk */ 4071da177e4SLinus Torvalds cpu_set(smp_processor_id(), cpu_online_map); 4081da177e4SLinus Torvalds #endif 4091da177e4SLinus Torvalds } 4101da177e4SLinus Torvalds 411e927ecb0SSuresh Siddha #ifdef CONFIG_SMP 412244fd545SChen, Kenneth W static void __init 413e927ecb0SSuresh Siddha check_for_logical_procs (void) 414e927ecb0SSuresh Siddha { 415e927ecb0SSuresh Siddha pal_logical_to_physical_t info; 416e927ecb0SSuresh Siddha s64 status; 417e927ecb0SSuresh Siddha 418e927ecb0SSuresh Siddha status = ia64_pal_logical_to_phys(0, &info); 419e927ecb0SSuresh Siddha if (status == -1) { 420e927ecb0SSuresh Siddha printk(KERN_INFO "No logical to physical processor mapping " 421e927ecb0SSuresh Siddha "available\n"); 422e927ecb0SSuresh Siddha return; 423e927ecb0SSuresh Siddha } 424e927ecb0SSuresh Siddha if (status) { 425e927ecb0SSuresh Siddha printk(KERN_ERR "ia64_pal_logical_to_phys failed with %ld\n", 426e927ecb0SSuresh Siddha status); 427e927ecb0SSuresh Siddha return; 428e927ecb0SSuresh Siddha } 429e927ecb0SSuresh Siddha /* 430e927ecb0SSuresh Siddha * Total number of siblings that BSP has. Though not all of them 431e927ecb0SSuresh Siddha * may have booted successfully. The correct number of siblings 432e927ecb0SSuresh Siddha * booted is in info.overview_num_log. 433e927ecb0SSuresh Siddha */ 434e927ecb0SSuresh Siddha smp_num_siblings = info.overview_tpc; 435e927ecb0SSuresh Siddha smp_num_cpucores = info.overview_cpp; 436e927ecb0SSuresh Siddha } 437e927ecb0SSuresh Siddha #endif 438e927ecb0SSuresh Siddha 439a5b00bb4SHorms static __initdata int nomca; 440a5b00bb4SHorms static __init int setup_nomca(char *s) 441a5b00bb4SHorms { 442a5b00bb4SHorms nomca = 1; 443a5b00bb4SHorms return 0; 444a5b00bb4SHorms } 445a5b00bb4SHorms early_param("nomca", setup_nomca); 446a5b00bb4SHorms 44745a98fc6SHorms #ifdef CONFIG_PROC_VMCORE 44845a98fc6SHorms /* elfcorehdr= specifies the location of elf core header 44945a98fc6SHorms * stored by the crashed kernel. 45045a98fc6SHorms */ 45145a98fc6SHorms static int __init parse_elfcorehdr(char *arg) 45245a98fc6SHorms { 45345a98fc6SHorms if (!arg) 45445a98fc6SHorms return -EINVAL; 45545a98fc6SHorms 45645a98fc6SHorms elfcorehdr_addr = memparse(arg, &arg); 45745a98fc6SHorms return 0; 45845a98fc6SHorms } 45945a98fc6SHorms early_param("elfcorehdr", parse_elfcorehdr); 460cee87af2SMagnus Damm 461cee87af2SMagnus Damm int __init reserve_elfcorehdr(unsigned long *start, unsigned long *end) 462cee87af2SMagnus Damm { 463cee87af2SMagnus Damm unsigned long length; 464cee87af2SMagnus Damm 465cee87af2SMagnus Damm /* We get the address using the kernel command line, 466cee87af2SMagnus Damm * but the size is extracted from the EFI tables. 467cee87af2SMagnus Damm * Both address and size are required for reservation 468cee87af2SMagnus Damm * to work properly. 469cee87af2SMagnus Damm */ 470cee87af2SMagnus Damm 471cee87af2SMagnus Damm if (elfcorehdr_addr >= ELFCORE_ADDR_MAX) 472cee87af2SMagnus Damm return -EINVAL; 473cee87af2SMagnus Damm 474cee87af2SMagnus Damm if ((length = vmcore_find_descriptor_size(elfcorehdr_addr)) == 0) { 475cee87af2SMagnus Damm elfcorehdr_addr = ELFCORE_ADDR_MAX; 476cee87af2SMagnus Damm return -EINVAL; 477cee87af2SMagnus Damm } 478cee87af2SMagnus Damm 479cee87af2SMagnus Damm *start = (unsigned long)__va(elfcorehdr_addr); 480cee87af2SMagnus Damm *end = *start + length; 481cee87af2SMagnus Damm return 0; 482cee87af2SMagnus Damm } 483cee87af2SMagnus Damm 48445a98fc6SHorms #endif /* CONFIG_PROC_VMCORE */ 48545a98fc6SHorms 4861da177e4SLinus Torvalds void __init 4871da177e4SLinus Torvalds setup_arch (char **cmdline_p) 4881da177e4SLinus Torvalds { 4891da177e4SLinus Torvalds unw_init(); 4901da177e4SLinus Torvalds 4911da177e4SLinus Torvalds ia64_patch_vtop((u64) __start___vtop_patchlist, (u64) __end___vtop_patchlist); 4921da177e4SLinus Torvalds 4931da177e4SLinus Torvalds *cmdline_p = __va(ia64_boot_param->command_line); 494a8d91b84SAlon Bar-Lev strlcpy(boot_command_line, *cmdline_p, COMMAND_LINE_SIZE); 4951da177e4SLinus Torvalds 4961da177e4SLinus Torvalds efi_init(); 4971da177e4SLinus Torvalds io_port_init(); 4981da177e4SLinus Torvalds 499a5b00bb4SHorms parse_early_param(); 500a5b00bb4SHorms 5011da177e4SLinus Torvalds #ifdef CONFIG_IA64_GENERIC 502a5b00bb4SHorms machvec_init(NULL); 5031da177e4SLinus Torvalds #endif 5041da177e4SLinus Torvalds 5051da177e4SLinus Torvalds if (early_console_setup(*cmdline_p) == 0) 5061da177e4SLinus Torvalds mark_bsp_online(); 5071da177e4SLinus Torvalds 508888ba6c6SLen Brown #ifdef CONFIG_ACPI 5091da177e4SLinus Torvalds /* Initialize the ACPI boot-time table parser */ 5101da177e4SLinus Torvalds acpi_table_init(); 5111da177e4SLinus Torvalds # ifdef CONFIG_ACPI_NUMA 5121da177e4SLinus Torvalds acpi_numa_init(); 5131da177e4SLinus Torvalds # endif 5141da177e4SLinus Torvalds #else 5151da177e4SLinus Torvalds # ifdef CONFIG_SMP 5161da177e4SLinus Torvalds smp_build_cpu_map(); /* happens, e.g., with the Ski simulator */ 5171da177e4SLinus Torvalds # endif 5181da177e4SLinus Torvalds #endif /* CONFIG_APCI_BOOT */ 5191da177e4SLinus Torvalds 5201da177e4SLinus Torvalds find_memory(); 5211da177e4SLinus Torvalds 5221da177e4SLinus Torvalds /* process SAL system table: */ 523b2c99e3cSBjorn Helgaas ia64_sal_init(__va(efi.sal_systab)); 5241da177e4SLinus Torvalds 525d6e56a2aSTony Luck ia64_setup_printk_clock(); 526d6e56a2aSTony Luck 5271da177e4SLinus Torvalds #ifdef CONFIG_SMP 5281da177e4SLinus Torvalds cpu_physical_id(0) = hard_smp_processor_id(); 529e927ecb0SSuresh Siddha 530e927ecb0SSuresh Siddha cpu_set(0, cpu_sibling_map[0]); 531e927ecb0SSuresh Siddha cpu_set(0, cpu_core_map[0]); 532e927ecb0SSuresh Siddha 533e927ecb0SSuresh Siddha check_for_logical_procs(); 534e927ecb0SSuresh Siddha if (smp_num_cpucores > 1) 535e927ecb0SSuresh Siddha printk(KERN_INFO 536e927ecb0SSuresh Siddha "cpu package is Multi-Core capable: number of cores=%d\n", 537e927ecb0SSuresh Siddha smp_num_cpucores); 538e927ecb0SSuresh Siddha if (smp_num_siblings > 1) 539e927ecb0SSuresh Siddha printk(KERN_INFO 540e927ecb0SSuresh Siddha "cpu package is Multi-Threading capable: number of siblings=%d\n", 541e927ecb0SSuresh Siddha smp_num_siblings); 5421da177e4SLinus Torvalds #endif 5431da177e4SLinus Torvalds 5441da177e4SLinus Torvalds cpu_init(); /* initialize the bootstrap CPU */ 545dcc17d1bSPeter Keilty mmu_context_init(); /* initialize context_id bitmap */ 5461da177e4SLinus Torvalds 547fa1d19e5STroy Heber check_sal_cache_flush(); 548fa1d19e5STroy Heber 549888ba6c6SLen Brown #ifdef CONFIG_ACPI 5501da177e4SLinus Torvalds acpi_boot_init(); 5511da177e4SLinus Torvalds #endif 5521da177e4SLinus Torvalds 5531da177e4SLinus Torvalds #ifdef CONFIG_VT 5541da177e4SLinus Torvalds if (!conswitchp) { 5551da177e4SLinus Torvalds # if defined(CONFIG_DUMMY_CONSOLE) 5561da177e4SLinus Torvalds conswitchp = &dummy_con; 5571da177e4SLinus Torvalds # endif 5581da177e4SLinus Torvalds # if defined(CONFIG_VGA_CONSOLE) 5591da177e4SLinus Torvalds /* 5601da177e4SLinus Torvalds * Non-legacy systems may route legacy VGA MMIO range to system 5611da177e4SLinus Torvalds * memory. vga_con probes the MMIO hole, so memory looks like 5621da177e4SLinus Torvalds * a VGA device to it. The EFI memory map can tell us if it's 5631da177e4SLinus Torvalds * memory so we can avoid this problem. 5641da177e4SLinus Torvalds */ 5651da177e4SLinus Torvalds if (efi_mem_type(0xA0000) != EFI_CONVENTIONAL_MEMORY) 5661da177e4SLinus Torvalds conswitchp = &vga_con; 5671da177e4SLinus Torvalds # endif 5681da177e4SLinus Torvalds } 5691da177e4SLinus Torvalds #endif 5701da177e4SLinus Torvalds 5711da177e4SLinus Torvalds /* enable IA-64 Machine Check Abort Handling unless disabled */ 572a5b00bb4SHorms if (!nomca) 5731da177e4SLinus Torvalds ia64_mca_init(); 5741da177e4SLinus Torvalds 5751da177e4SLinus Torvalds platform_setup(cmdline_p); 5761da177e4SLinus Torvalds paging_init(); 5771da177e4SLinus Torvalds } 5781da177e4SLinus Torvalds 5791da177e4SLinus Torvalds /* 5801da177e4SLinus Torvalds * Display cpu info for all cpu's. 5811da177e4SLinus Torvalds */ 5821da177e4SLinus Torvalds static int 5831da177e4SLinus Torvalds show_cpuinfo (struct seq_file *m, void *v) 5841da177e4SLinus Torvalds { 5851da177e4SLinus Torvalds #ifdef CONFIG_SMP 5861da177e4SLinus Torvalds # define lpj c->loops_per_jiffy 5871da177e4SLinus Torvalds # define cpunum c->cpu 5881da177e4SLinus Torvalds #else 5891da177e4SLinus Torvalds # define lpj loops_per_jiffy 5901da177e4SLinus Torvalds # define cpunum 0 5911da177e4SLinus Torvalds #endif 5921da177e4SLinus Torvalds static struct { 5931da177e4SLinus Torvalds unsigned long mask; 5941da177e4SLinus Torvalds const char *feature_name; 5951da177e4SLinus Torvalds } feature_bits[] = { 5961da177e4SLinus Torvalds { 1UL << 0, "branchlong" }, 5971da177e4SLinus Torvalds { 1UL << 1, "spontaneous deferral"}, 5981da177e4SLinus Torvalds { 1UL << 2, "16-byte atomic ops" } 5991da177e4SLinus Torvalds }; 600ae0af3e3SAron Griffis char features[128], *cp, *sep; 6011da177e4SLinus Torvalds struct cpuinfo_ia64 *c = v; 6021da177e4SLinus Torvalds unsigned long mask; 60338c0b2c2STony Luck unsigned long proc_freq; 604ae0af3e3SAron Griffis int i, size; 6051da177e4SLinus Torvalds 6061da177e4SLinus Torvalds mask = c->features; 6071da177e4SLinus Torvalds 6081da177e4SLinus Torvalds /* build the feature string: */ 609ae0af3e3SAron Griffis memcpy(features, "standard", 9); 6101da177e4SLinus Torvalds cp = features; 611ae0af3e3SAron Griffis size = sizeof(features); 612ae0af3e3SAron Griffis sep = ""; 613ae0af3e3SAron Griffis for (i = 0; i < ARRAY_SIZE(feature_bits) && size > 1; ++i) { 6141da177e4SLinus Torvalds if (mask & feature_bits[i].mask) { 615ae0af3e3SAron Griffis cp += snprintf(cp, size, "%s%s", sep, 616ae0af3e3SAron Griffis feature_bits[i].feature_name), 617ae0af3e3SAron Griffis sep = ", "; 6181da177e4SLinus Torvalds mask &= ~feature_bits[i].mask; 619ae0af3e3SAron Griffis size = sizeof(features) - (cp - features); 6201da177e4SLinus Torvalds } 6211da177e4SLinus Torvalds } 622ae0af3e3SAron Griffis if (mask && size > 1) { 623ae0af3e3SAron Griffis /* print unknown features as a hex value */ 624ae0af3e3SAron Griffis snprintf(cp, size, "%s0x%lx", sep, mask); 6251da177e4SLinus Torvalds } 6261da177e4SLinus Torvalds 62795235ca2SVenkatesh Pallipadi proc_freq = cpufreq_quick_get(cpunum); 62895235ca2SVenkatesh Pallipadi if (!proc_freq) 62995235ca2SVenkatesh Pallipadi proc_freq = c->proc_freq / 1000; 63095235ca2SVenkatesh Pallipadi 6311da177e4SLinus Torvalds seq_printf(m, 6321da177e4SLinus Torvalds "processor : %d\n" 6331da177e4SLinus Torvalds "vendor : %s\n" 6341da177e4SLinus Torvalds "arch : IA-64\n" 63576d08bb3STony Luck "family : %u\n" 6361da177e4SLinus Torvalds "model : %u\n" 63776d08bb3STony Luck "model name : %s\n" 6381da177e4SLinus Torvalds "revision : %u\n" 6391da177e4SLinus Torvalds "archrev : %u\n" 640ae0af3e3SAron Griffis "features : %s\n" 6411da177e4SLinus Torvalds "cpu number : %lu\n" 6421da177e4SLinus Torvalds "cpu regs : %u\n" 6431da177e4SLinus Torvalds "cpu MHz : %lu.%06lu\n" 6441da177e4SLinus Torvalds "itc MHz : %lu.%06lu\n" 645e927ecb0SSuresh Siddha "BogoMIPS : %lu.%02lu\n", 64676d08bb3STony Luck cpunum, c->vendor, c->family, c->model, 64776d08bb3STony Luck c->model_name, c->revision, c->archrev, 6481da177e4SLinus Torvalds features, c->ppn, c->number, 64995235ca2SVenkatesh Pallipadi proc_freq / 1000, proc_freq % 1000, 6501da177e4SLinus Torvalds c->itc_freq / 1000000, c->itc_freq % 1000000, 6511da177e4SLinus Torvalds lpj*HZ/500000, (lpj*HZ/5000) % 100); 652e927ecb0SSuresh Siddha #ifdef CONFIG_SMP 653ce6e71adSSiddha, Suresh B seq_printf(m, "siblings : %u\n", cpus_weight(cpu_core_map[cpunum])); 654e927ecb0SSuresh Siddha if (c->threads_per_core > 1 || c->cores_per_socket > 1) 655e927ecb0SSuresh Siddha seq_printf(m, 656e927ecb0SSuresh Siddha "physical id: %u\n" 657e927ecb0SSuresh Siddha "core id : %u\n" 658e927ecb0SSuresh Siddha "thread id : %u\n", 659e927ecb0SSuresh Siddha c->socket_id, c->core_id, c->thread_id); 660e927ecb0SSuresh Siddha #endif 661e927ecb0SSuresh Siddha seq_printf(m,"\n"); 662e927ecb0SSuresh Siddha 6631da177e4SLinus Torvalds return 0; 6641da177e4SLinus Torvalds } 6651da177e4SLinus Torvalds 6661da177e4SLinus Torvalds static void * 6671da177e4SLinus Torvalds c_start (struct seq_file *m, loff_t *pos) 6681da177e4SLinus Torvalds { 6691da177e4SLinus Torvalds #ifdef CONFIG_SMP 6701da177e4SLinus Torvalds while (*pos < NR_CPUS && !cpu_isset(*pos, cpu_online_map)) 6711da177e4SLinus Torvalds ++*pos; 6721da177e4SLinus Torvalds #endif 6731da177e4SLinus Torvalds return *pos < NR_CPUS ? cpu_data(*pos) : NULL; 6741da177e4SLinus Torvalds } 6751da177e4SLinus Torvalds 6761da177e4SLinus Torvalds static void * 6771da177e4SLinus Torvalds c_next (struct seq_file *m, void *v, loff_t *pos) 6781da177e4SLinus Torvalds { 6791da177e4SLinus Torvalds ++*pos; 6801da177e4SLinus Torvalds return c_start(m, pos); 6811da177e4SLinus Torvalds } 6821da177e4SLinus Torvalds 6831da177e4SLinus Torvalds static void 6841da177e4SLinus Torvalds c_stop (struct seq_file *m, void *v) 6851da177e4SLinus Torvalds { 6861da177e4SLinus Torvalds } 6871da177e4SLinus Torvalds 6881da177e4SLinus Torvalds struct seq_operations cpuinfo_op = { 6891da177e4SLinus Torvalds .start = c_start, 6901da177e4SLinus Torvalds .next = c_next, 6911da177e4SLinus Torvalds .stop = c_stop, 6921da177e4SLinus Torvalds .show = show_cpuinfo 6931da177e4SLinus Torvalds }; 6941da177e4SLinus Torvalds 695c5e83e3fSJack Steiner #define MAX_BRANDS 8 696c5e83e3fSJack Steiner static char brandname[MAX_BRANDS][128]; 69776d08bb3STony Luck 69876d08bb3STony Luck static char * __cpuinit 69976d08bb3STony Luck get_model_name(__u8 family, __u8 model) 70076d08bb3STony Luck { 701c5e83e3fSJack Steiner static int overflow; 70276d08bb3STony Luck char brand[128]; 703c5e83e3fSJack Steiner int i; 70476d08bb3STony Luck 70575f6a1deSTony Luck memcpy(brand, "Unknown", 8); 70676d08bb3STony Luck if (ia64_pal_get_brand_info(brand)) { 70776d08bb3STony Luck if (family == 0x7) 70876d08bb3STony Luck memcpy(brand, "Merced", 7); 70976d08bb3STony Luck else if (family == 0x1f) switch (model) { 71076d08bb3STony Luck case 0: memcpy(brand, "McKinley", 9); break; 71176d08bb3STony Luck case 1: memcpy(brand, "Madison", 8); break; 71276d08bb3STony Luck case 2: memcpy(brand, "Madison up to 9M cache", 23); break; 71375f6a1deSTony Luck } 71476d08bb3STony Luck } 715c5e83e3fSJack Steiner for (i = 0; i < MAX_BRANDS; i++) 716c5e83e3fSJack Steiner if (strcmp(brandname[i], brand) == 0) 717c5e83e3fSJack Steiner return brandname[i]; 718c5e83e3fSJack Steiner for (i = 0; i < MAX_BRANDS; i++) 719c5e83e3fSJack Steiner if (brandname[i][0] == '\0') 720c5e83e3fSJack Steiner return strcpy(brandname[i], brand); 721c5e83e3fSJack Steiner if (overflow++ == 0) 722c5e83e3fSJack Steiner printk(KERN_ERR 723c5e83e3fSJack Steiner "%s: Table overflow. Some processor model information will be missing\n", 724c5e83e3fSJack Steiner __FUNCTION__); 725c5e83e3fSJack Steiner return "Unknown"; 72676d08bb3STony Luck } 72776d08bb3STony Luck 728244fd545SChen, Kenneth W static void __cpuinit 7291da177e4SLinus Torvalds identify_cpu (struct cpuinfo_ia64 *c) 7301da177e4SLinus Torvalds { 7311da177e4SLinus Torvalds union { 7321da177e4SLinus Torvalds unsigned long bits[5]; 7331da177e4SLinus Torvalds struct { 7341da177e4SLinus Torvalds /* id 0 & 1: */ 7351da177e4SLinus Torvalds char vendor[16]; 7361da177e4SLinus Torvalds 7371da177e4SLinus Torvalds /* id 2 */ 7381da177e4SLinus Torvalds u64 ppn; /* processor serial number */ 7391da177e4SLinus Torvalds 7401da177e4SLinus Torvalds /* id 3: */ 7411da177e4SLinus Torvalds unsigned number : 8; 7421da177e4SLinus Torvalds unsigned revision : 8; 7431da177e4SLinus Torvalds unsigned model : 8; 7441da177e4SLinus Torvalds unsigned family : 8; 7451da177e4SLinus Torvalds unsigned archrev : 8; 7461da177e4SLinus Torvalds unsigned reserved : 24; 7471da177e4SLinus Torvalds 7481da177e4SLinus Torvalds /* id 4: */ 7491da177e4SLinus Torvalds u64 features; 7501da177e4SLinus Torvalds } field; 7511da177e4SLinus Torvalds } cpuid; 7521da177e4SLinus Torvalds pal_vm_info_1_u_t vm1; 7531da177e4SLinus Torvalds pal_vm_info_2_u_t vm2; 7541da177e4SLinus Torvalds pal_status_t status; 7551da177e4SLinus Torvalds unsigned long impl_va_msb = 50, phys_addr_size = 44; /* Itanium defaults */ 7561da177e4SLinus Torvalds int i; 7571da177e4SLinus Torvalds for (i = 0; i < 5; ++i) 7581da177e4SLinus Torvalds cpuid.bits[i] = ia64_get_cpuid(i); 7591da177e4SLinus Torvalds 7601da177e4SLinus Torvalds memcpy(c->vendor, cpuid.field.vendor, 16); 7611da177e4SLinus Torvalds #ifdef CONFIG_SMP 7621da177e4SLinus Torvalds c->cpu = smp_processor_id(); 763e927ecb0SSuresh Siddha 764e927ecb0SSuresh Siddha /* below default values will be overwritten by identify_siblings() 765e927ecb0SSuresh Siddha * for Multi-Threading/Multi-Core capable cpu's 766e927ecb0SSuresh Siddha */ 767e927ecb0SSuresh Siddha c->threads_per_core = c->cores_per_socket = c->num_log = 1; 768e927ecb0SSuresh Siddha c->socket_id = -1; 769e927ecb0SSuresh Siddha 770e927ecb0SSuresh Siddha identify_siblings(c); 7711da177e4SLinus Torvalds #endif 7721da177e4SLinus Torvalds c->ppn = cpuid.field.ppn; 7731da177e4SLinus Torvalds c->number = cpuid.field.number; 7741da177e4SLinus Torvalds c->revision = cpuid.field.revision; 7751da177e4SLinus Torvalds c->model = cpuid.field.model; 7761da177e4SLinus Torvalds c->family = cpuid.field.family; 7771da177e4SLinus Torvalds c->archrev = cpuid.field.archrev; 7781da177e4SLinus Torvalds c->features = cpuid.field.features; 77976d08bb3STony Luck c->model_name = get_model_name(c->family, c->model); 7801da177e4SLinus Torvalds 7811da177e4SLinus Torvalds status = ia64_pal_vm_summary(&vm1, &vm2); 7821da177e4SLinus Torvalds if (status == PAL_STATUS_SUCCESS) { 7831da177e4SLinus Torvalds impl_va_msb = vm2.pal_vm_info_2_s.impl_va_msb; 7841da177e4SLinus Torvalds phys_addr_size = vm1.pal_vm_info_1_s.phys_add_size; 7851da177e4SLinus Torvalds } 7861da177e4SLinus Torvalds c->unimpl_va_mask = ~((7L<<61) | ((1L << (impl_va_msb + 1)) - 1)); 7871da177e4SLinus Torvalds c->unimpl_pa_mask = ~((1L<<63) | ((1L << phys_addr_size) - 1)); 7881da177e4SLinus Torvalds } 7891da177e4SLinus Torvalds 7901da177e4SLinus Torvalds void 7911da177e4SLinus Torvalds setup_per_cpu_areas (void) 7921da177e4SLinus Torvalds { 7931da177e4SLinus Torvalds /* start_kernel() requires this... */ 794a6b14fa6SAshok Raj #ifdef CONFIG_ACPI_HOTPLUG_CPU 795a6b14fa6SAshok Raj prefill_possible_map(); 796a6b14fa6SAshok Raj #endif 7971da177e4SLinus Torvalds } 7981da177e4SLinus Torvalds 79908357f82SZoltan Menyhart /* 80008357f82SZoltan Menyhart * Calculate the max. cache line size. 80108357f82SZoltan Menyhart * 80208357f82SZoltan Menyhart * In addition, the minimum of the i-cache stride sizes is calculated for 80308357f82SZoltan Menyhart * "flush_icache_range()". 80408357f82SZoltan Menyhart */ 805244fd545SChen, Kenneth W static void __cpuinit 8061da177e4SLinus Torvalds get_max_cacheline_size (void) 8071da177e4SLinus Torvalds { 8081da177e4SLinus Torvalds unsigned long line_size, max = 1; 809198e2f18Sakpm@osdl.org unsigned int cache_size = 0; 8101da177e4SLinus Torvalds u64 l, levels, unique_caches; 8111da177e4SLinus Torvalds pal_cache_config_info_t cci; 8121da177e4SLinus Torvalds s64 status; 8131da177e4SLinus Torvalds 8141da177e4SLinus Torvalds status = ia64_pal_cache_summary(&levels, &unique_caches); 8151da177e4SLinus Torvalds if (status != 0) { 8161da177e4SLinus Torvalds printk(KERN_ERR "%s: ia64_pal_cache_summary() failed (status=%ld)\n", 8171da177e4SLinus Torvalds __FUNCTION__, status); 8181da177e4SLinus Torvalds max = SMP_CACHE_BYTES; 81908357f82SZoltan Menyhart /* Safest setup for "flush_icache_range()" */ 82008357f82SZoltan Menyhart ia64_i_cache_stride_shift = I_CACHE_STRIDE_SHIFT; 8211da177e4SLinus Torvalds goto out; 8221da177e4SLinus Torvalds } 8231da177e4SLinus Torvalds 8241da177e4SLinus Torvalds for (l = 0; l < levels; ++l) { 8251da177e4SLinus Torvalds status = ia64_pal_cache_config_info(l, /* cache_type (data_or_unified)= */ 2, 8261da177e4SLinus Torvalds &cci); 8271da177e4SLinus Torvalds if (status != 0) { 8281da177e4SLinus Torvalds printk(KERN_ERR 82908357f82SZoltan Menyhart "%s: ia64_pal_cache_config_info(l=%lu, 2) failed (status=%ld)\n", 8301da177e4SLinus Torvalds __FUNCTION__, l, status); 8311da177e4SLinus Torvalds max = SMP_CACHE_BYTES; 83208357f82SZoltan Menyhart /* The safest setup for "flush_icache_range()" */ 83308357f82SZoltan Menyhart cci.pcci_stride = I_CACHE_STRIDE_SHIFT; 83408357f82SZoltan Menyhart cci.pcci_unified = 1; 8351da177e4SLinus Torvalds } 8361da177e4SLinus Torvalds line_size = 1 << cci.pcci_line_size; 8371da177e4SLinus Torvalds if (line_size > max) 8381da177e4SLinus Torvalds max = line_size; 839198e2f18Sakpm@osdl.org if (cache_size < cci.pcci_cache_size) 840198e2f18Sakpm@osdl.org cache_size = cci.pcci_cache_size; 84108357f82SZoltan Menyhart if (!cci.pcci_unified) { 84208357f82SZoltan Menyhart status = ia64_pal_cache_config_info(l, 84308357f82SZoltan Menyhart /* cache_type (instruction)= */ 1, 84408357f82SZoltan Menyhart &cci); 84508357f82SZoltan Menyhart if (status != 0) { 84608357f82SZoltan Menyhart printk(KERN_ERR 84708357f82SZoltan Menyhart "%s: ia64_pal_cache_config_info(l=%lu, 1) failed (status=%ld)\n", 84808357f82SZoltan Menyhart __FUNCTION__, l, status); 84908357f82SZoltan Menyhart /* The safest setup for "flush_icache_range()" */ 85008357f82SZoltan Menyhart cci.pcci_stride = I_CACHE_STRIDE_SHIFT; 85108357f82SZoltan Menyhart } 85208357f82SZoltan Menyhart } 85308357f82SZoltan Menyhart if (cci.pcci_stride < ia64_i_cache_stride_shift) 85408357f82SZoltan Menyhart ia64_i_cache_stride_shift = cci.pcci_stride; 8551da177e4SLinus Torvalds } 8561da177e4SLinus Torvalds out: 857198e2f18Sakpm@osdl.org #ifdef CONFIG_SMP 858198e2f18Sakpm@osdl.org max_cache_size = max(max_cache_size, cache_size); 859198e2f18Sakpm@osdl.org #endif 8601da177e4SLinus Torvalds if (max > ia64_max_cacheline_size) 8611da177e4SLinus Torvalds ia64_max_cacheline_size = max; 8621da177e4SLinus Torvalds } 8631da177e4SLinus Torvalds 8641da177e4SLinus Torvalds /* 8651da177e4SLinus Torvalds * cpu_init() initializes state that is per-CPU. This function acts 8661da177e4SLinus Torvalds * as a 'CPU state barrier', nothing should get across. 8671da177e4SLinus Torvalds */ 868244fd545SChen, Kenneth W void __cpuinit 8691da177e4SLinus Torvalds cpu_init (void) 8701da177e4SLinus Torvalds { 871244fd545SChen, Kenneth W extern void __cpuinit ia64_mmu_init (void *); 8721da177e4SLinus Torvalds unsigned long num_phys_stacked; 8731da177e4SLinus Torvalds pal_vm_info_2_u_t vmi; 8741da177e4SLinus Torvalds unsigned int max_ctx; 8751da177e4SLinus Torvalds struct cpuinfo_ia64 *cpu_info; 8761da177e4SLinus Torvalds void *cpu_data; 8771da177e4SLinus Torvalds 8781da177e4SLinus Torvalds cpu_data = per_cpu_init(); 8791da177e4SLinus Torvalds 8801da177e4SLinus Torvalds /* 8811da177e4SLinus Torvalds * We set ar.k3 so that assembly code in MCA handler can compute 8821da177e4SLinus Torvalds * physical addresses of per cpu variables with a simple: 8831da177e4SLinus Torvalds * phys = ar.k3 + &per_cpu_var 8841da177e4SLinus Torvalds */ 8851da177e4SLinus Torvalds ia64_set_kr(IA64_KR_PER_CPU_DATA, 8861da177e4SLinus Torvalds ia64_tpa(cpu_data) - (long) __per_cpu_start); 8871da177e4SLinus Torvalds 8881da177e4SLinus Torvalds get_max_cacheline_size(); 8891da177e4SLinus Torvalds 8901da177e4SLinus Torvalds /* 8911da177e4SLinus Torvalds * We can't pass "local_cpu_data" to identify_cpu() because we haven't called 8921da177e4SLinus Torvalds * ia64_mmu_init() yet. And we can't call ia64_mmu_init() first because it 8931da177e4SLinus Torvalds * depends on the data returned by identify_cpu(). We break the dependency by 8941da177e4SLinus Torvalds * accessing cpu_data() through the canonical per-CPU address. 8951da177e4SLinus Torvalds */ 8961da177e4SLinus Torvalds cpu_info = cpu_data + ((char *) &__ia64_per_cpu_var(cpu_info) - __per_cpu_start); 8971da177e4SLinus Torvalds identify_cpu(cpu_info); 8981da177e4SLinus Torvalds 8991da177e4SLinus Torvalds #ifdef CONFIG_MCKINLEY 9001da177e4SLinus Torvalds { 9011da177e4SLinus Torvalds # define FEATURE_SET 16 9021da177e4SLinus Torvalds struct ia64_pal_retval iprv; 9031da177e4SLinus Torvalds 9041da177e4SLinus Torvalds if (cpu_info->family == 0x1f) { 9051da177e4SLinus Torvalds PAL_CALL_PHYS(iprv, PAL_PROC_GET_FEATURES, 0, FEATURE_SET, 0); 9061da177e4SLinus Torvalds if ((iprv.status == 0) && (iprv.v0 & 0x80) && (iprv.v2 & 0x80)) 9071da177e4SLinus Torvalds PAL_CALL_PHYS(iprv, PAL_PROC_SET_FEATURES, 9081da177e4SLinus Torvalds (iprv.v1 | 0x80), FEATURE_SET, 0); 9091da177e4SLinus Torvalds } 9101da177e4SLinus Torvalds } 9111da177e4SLinus Torvalds #endif 9121da177e4SLinus Torvalds 9131da177e4SLinus Torvalds /* Clear the stack memory reserved for pt_regs: */ 9146450578fSAl Viro memset(task_pt_regs(current), 0, sizeof(struct pt_regs)); 9151da177e4SLinus Torvalds 9161da177e4SLinus Torvalds ia64_set_kr(IA64_KR_FPU_OWNER, 0); 9171da177e4SLinus Torvalds 9181da177e4SLinus Torvalds /* 9191da177e4SLinus Torvalds * Initialize the page-table base register to a global 9201da177e4SLinus Torvalds * directory with all zeroes. This ensure that we can handle 9211da177e4SLinus Torvalds * TLB-misses to user address-space even before we created the 9221da177e4SLinus Torvalds * first user address-space. This may happen, e.g., due to 9231da177e4SLinus Torvalds * aggressive use of lfetch.fault. 9241da177e4SLinus Torvalds */ 9251da177e4SLinus Torvalds ia64_set_kr(IA64_KR_PT_BASE, __pa(ia64_imva(empty_zero_page))); 9261da177e4SLinus Torvalds 9271da177e4SLinus Torvalds /* 92886ebacd3STony Luck * Initialize default control register to defer speculative faults except 92986ebacd3STony Luck * for those arising from TLB misses, which are not deferred. The 9301da177e4SLinus Torvalds * kernel MUST NOT depend on a particular setting of these bits (in other words, 9311da177e4SLinus Torvalds * the kernel must have recovery code for all speculative accesses). Turn on 9321da177e4SLinus Torvalds * dcr.lc as per recommendation by the architecture team. Most IA-32 apps 9331da177e4SLinus Torvalds * shouldn't be affected by this (moral: keep your ia32 locks aligned and you'll 9341da177e4SLinus Torvalds * be fine). 9351da177e4SLinus Torvalds */ 9361da177e4SLinus Torvalds ia64_setreg(_IA64_REG_CR_DCR, ( IA64_DCR_DP | IA64_DCR_DK | IA64_DCR_DX | IA64_DCR_DR 9371da177e4SLinus Torvalds | IA64_DCR_DA | IA64_DCR_DD | IA64_DCR_LC)); 9381da177e4SLinus Torvalds atomic_inc(&init_mm.mm_count); 9391da177e4SLinus Torvalds current->active_mm = &init_mm; 9401da177e4SLinus Torvalds if (current->mm) 9411da177e4SLinus Torvalds BUG(); 9421da177e4SLinus Torvalds 9431da177e4SLinus Torvalds ia64_mmu_init(ia64_imva(cpu_data)); 9441da177e4SLinus Torvalds ia64_mca_cpu_init(ia64_imva(cpu_data)); 9451da177e4SLinus Torvalds 9461da177e4SLinus Torvalds #ifdef CONFIG_IA32_SUPPORT 9471da177e4SLinus Torvalds ia32_cpu_init(); 9481da177e4SLinus Torvalds #endif 9491da177e4SLinus Torvalds 9501da177e4SLinus Torvalds /* Clear ITC to eliminiate sched_clock() overflows in human time. */ 9511da177e4SLinus Torvalds ia64_set_itc(0); 9521da177e4SLinus Torvalds 9531da177e4SLinus Torvalds /* disable all local interrupt sources: */ 9541da177e4SLinus Torvalds ia64_set_itv(1 << 16); 9551da177e4SLinus Torvalds ia64_set_lrr0(1 << 16); 9561da177e4SLinus Torvalds ia64_set_lrr1(1 << 16); 9571da177e4SLinus Torvalds ia64_setreg(_IA64_REG_CR_PMV, 1 << 16); 9581da177e4SLinus Torvalds ia64_setreg(_IA64_REG_CR_CMCV, 1 << 16); 9591da177e4SLinus Torvalds 9601da177e4SLinus Torvalds /* clear TPR & XTP to enable all interrupt classes: */ 9611da177e4SLinus Torvalds ia64_setreg(_IA64_REG_CR_TPR, 0); 9621da177e4SLinus Torvalds #ifdef CONFIG_SMP 9631da177e4SLinus Torvalds normal_xtp(); 9641da177e4SLinus Torvalds #endif 9651da177e4SLinus Torvalds 9661da177e4SLinus Torvalds /* set ia64_ctx.max_rid to the maximum RID that is supported by all CPUs: */ 9671da177e4SLinus Torvalds if (ia64_pal_vm_summary(NULL, &vmi) == 0) 9681da177e4SLinus Torvalds max_ctx = (1U << (vmi.pal_vm_info_2_s.rid_size - 3)) - 1; 9691da177e4SLinus Torvalds else { 9701da177e4SLinus Torvalds printk(KERN_WARNING "cpu_init: PAL VM summary failed, assuming 18 RID bits\n"); 9711da177e4SLinus Torvalds max_ctx = (1U << 15) - 1; /* use architected minimum */ 9721da177e4SLinus Torvalds } 9731da177e4SLinus Torvalds while (max_ctx < ia64_ctx.max_ctx) { 9741da177e4SLinus Torvalds unsigned int old = ia64_ctx.max_ctx; 9751da177e4SLinus Torvalds if (cmpxchg(&ia64_ctx.max_ctx, old, max_ctx) == old) 9761da177e4SLinus Torvalds break; 9771da177e4SLinus Torvalds } 9781da177e4SLinus Torvalds 9791da177e4SLinus Torvalds if (ia64_pal_rse_info(&num_phys_stacked, NULL) != 0) { 9801da177e4SLinus Torvalds printk(KERN_WARNING "cpu_init: PAL RSE info failed; assuming 96 physical " 9811da177e4SLinus Torvalds "stacked regs\n"); 9821da177e4SLinus Torvalds num_phys_stacked = 96; 9831da177e4SLinus Torvalds } 9841da177e4SLinus Torvalds /* size of physical stacked register partition plus 8 bytes: */ 9851da177e4SLinus Torvalds __get_cpu_var(ia64_phys_stacked_size_p8) = num_phys_stacked*8 + 8; 9861da177e4SLinus Torvalds platform_cpu_init(); 9876c4fa560SVenkatesh Pallipadi pm_idle = default_idle; 9881da177e4SLinus Torvalds } 9891da177e4SLinus Torvalds 9904dc7a0bbSIngo Molnar /* 9914dc7a0bbSIngo Molnar * On SMP systems, when the scheduler does migration-cost autodetection, 9924dc7a0bbSIngo Molnar * it needs a way to flush as much of the CPU's caches as possible. 9934dc7a0bbSIngo Molnar */ 9944dc7a0bbSIngo Molnar void sched_cacheflush(void) 9954dc7a0bbSIngo Molnar { 9964dc7a0bbSIngo Molnar ia64_sal_cache_flush(3); 9974dc7a0bbSIngo Molnar } 9984dc7a0bbSIngo Molnar 999244fd545SChen, Kenneth W void __init 10001da177e4SLinus Torvalds check_bugs (void) 10011da177e4SLinus Torvalds { 10021da177e4SLinus Torvalds ia64_patch_mckinley_e9((unsigned long) __start___mckinley_e9_bundles, 10031da177e4SLinus Torvalds (unsigned long) __end___mckinley_e9_bundles); 10041da177e4SLinus Torvalds } 10053ed3bce8SMatt Domsch 10063ed3bce8SMatt Domsch static int __init run_dmi_scan(void) 10073ed3bce8SMatt Domsch { 10083ed3bce8SMatt Domsch dmi_scan_machine(); 10093ed3bce8SMatt Domsch return 0; 10103ed3bce8SMatt Domsch } 10113ed3bce8SMatt Domsch core_initcall(run_dmi_scan); 1012