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 254d8c97d5fSTony Luck efi_memmap_init(&rsvd_region[n].start, &rsvd_region[n].end); 255d8c97d5fSTony Luck n++; 256d8c97d5fSTony Luck 257a7956113SZou Nan hai #ifdef CONFIG_KEXEC 258a7956113SZou Nan hai /* crashkernel=size@offset specifies the size to reserve for a crash 259a7956113SZou Nan hai * kernel.(offset is ingored for keep compatibility with other archs) 260a7956113SZou Nan hai * By reserving this memory we guarantee that linux never set's it 261a7956113SZou Nan hai * up as a DMA target.Useful for holding code to do something 262a7956113SZou Nan hai * appropriate after a kernel panic. 263a7956113SZou Nan hai */ 264a7956113SZou Nan hai { 265a7956113SZou Nan hai char *from = strstr(saved_command_line, "crashkernel="); 266a7956113SZou Nan hai unsigned long base, size; 267a7956113SZou Nan hai if (from) { 268a7956113SZou Nan hai size = memparse(from + 12, &from); 269a7956113SZou Nan hai if (size) { 270a7956113SZou Nan hai sort_regions(rsvd_region, n); 271a7956113SZou Nan hai base = kdump_find_rsvd_region(size, 272a7956113SZou Nan hai rsvd_region, n); 273a7956113SZou Nan hai if (base != ~0UL) { 274a7956113SZou Nan hai rsvd_region[n].start = 275a7956113SZou Nan hai (unsigned long)__va(base); 276a7956113SZou Nan hai rsvd_region[n].end = 277a7956113SZou Nan hai (unsigned long)__va(base + size); 278a7956113SZou Nan hai n++; 279a7956113SZou Nan hai crashk_res.start = base; 280a7956113SZou Nan hai crashk_res.end = base + size - 1; 281a7956113SZou Nan hai } 282a7956113SZou Nan hai } 283a7956113SZou Nan hai } 284a7956113SZou Nan hai efi_memmap_res.start = ia64_boot_param->efi_memmap; 285a7956113SZou Nan hai efi_memmap_res.end = efi_memmap_res.start + 286a7956113SZou Nan hai ia64_boot_param->efi_memmap_size; 287a7956113SZou Nan hai boot_param_res.start = __pa(ia64_boot_param); 288a7956113SZou Nan hai boot_param_res.end = boot_param_res.start + 289a7956113SZou Nan hai sizeof(*ia64_boot_param); 290a7956113SZou Nan hai } 291a7956113SZou Nan hai #endif 2921da177e4SLinus Torvalds /* end of memory marker */ 2931da177e4SLinus Torvalds rsvd_region[n].start = ~0UL; 2941da177e4SLinus Torvalds rsvd_region[n].end = ~0UL; 2951da177e4SLinus Torvalds n++; 2961da177e4SLinus Torvalds 2971da177e4SLinus Torvalds num_rsvd_regions = n; 2985eb1d63fSAlex Williamson BUG_ON(IA64_MAX_RSVD_REGIONS + 1 < n); 2991da177e4SLinus Torvalds 3001da177e4SLinus Torvalds sort_regions(rsvd_region, num_rsvd_regions); 3011da177e4SLinus Torvalds } 3021da177e4SLinus Torvalds 303a7956113SZou Nan hai 3041da177e4SLinus Torvalds /** 3051da177e4SLinus Torvalds * find_initrd - get initrd parameters from the boot parameter structure 3061da177e4SLinus Torvalds * 3071da177e4SLinus Torvalds * Grab the initrd start and end from the boot parameter struct given us by 3081da177e4SLinus Torvalds * the boot loader. 3091da177e4SLinus Torvalds */ 310dae28066SChen, Kenneth W void __init 3111da177e4SLinus Torvalds find_initrd (void) 3121da177e4SLinus Torvalds { 3131da177e4SLinus Torvalds #ifdef CONFIG_BLK_DEV_INITRD 3141da177e4SLinus Torvalds if (ia64_boot_param->initrd_start) { 3151da177e4SLinus Torvalds initrd_start = (unsigned long)__va(ia64_boot_param->initrd_start); 3161da177e4SLinus Torvalds initrd_end = initrd_start+ia64_boot_param->initrd_size; 3171da177e4SLinus Torvalds 3181da177e4SLinus Torvalds printk(KERN_INFO "Initial ramdisk at: 0x%lx (%lu bytes)\n", 3191da177e4SLinus Torvalds initrd_start, ia64_boot_param->initrd_size); 3201da177e4SLinus Torvalds } 3211da177e4SLinus Torvalds #endif 3221da177e4SLinus Torvalds } 3231da177e4SLinus Torvalds 3241da177e4SLinus Torvalds static void __init 3251da177e4SLinus Torvalds io_port_init (void) 3261da177e4SLinus Torvalds { 3271da177e4SLinus Torvalds unsigned long phys_iobase; 3281da177e4SLinus Torvalds 3291da177e4SLinus Torvalds /* 33044c45120SBjorn Helgaas * Set `iobase' based on the EFI memory map or, failing that, the 33144c45120SBjorn Helgaas * value firmware left in ar.k0. 3321da177e4SLinus Torvalds * 33344c45120SBjorn Helgaas * Note that in ia32 mode, IN/OUT instructions use ar.k0 to compute 33444c45120SBjorn Helgaas * the port's virtual address, so ia32_load_state() loads it with a 33544c45120SBjorn Helgaas * user virtual address. But in ia64 mode, glibc uses the 33644c45120SBjorn Helgaas * *physical* address in ar.k0 to mmap the appropriate area from 33744c45120SBjorn Helgaas * /dev/mem, and the inX()/outX() interfaces use MMIO. In both 33844c45120SBjorn Helgaas * cases, user-mode can only use the legacy 0-64K I/O port space. 33944c45120SBjorn Helgaas * 34044c45120SBjorn Helgaas * ar.k0 is not involved in kernel I/O port accesses, which can use 34144c45120SBjorn Helgaas * any of the I/O port spaces and are done via MMIO using the 34244c45120SBjorn Helgaas * virtual mmio_base from the appropriate io_space[]. 3431da177e4SLinus Torvalds */ 3441da177e4SLinus Torvalds phys_iobase = efi_get_iobase(); 34544c45120SBjorn Helgaas if (!phys_iobase) { 3461da177e4SLinus Torvalds phys_iobase = ia64_get_kr(IA64_KR_IO_BASE); 34744c45120SBjorn Helgaas printk(KERN_INFO "No I/O port range found in EFI memory map, " 34844c45120SBjorn Helgaas "falling back to AR.KR0 (0x%lx)\n", phys_iobase); 3491da177e4SLinus Torvalds } 3501da177e4SLinus Torvalds ia64_iobase = (unsigned long) ioremap(phys_iobase, 0); 35144c45120SBjorn Helgaas ia64_set_kr(IA64_KR_IO_BASE, __pa(ia64_iobase)); 3521da177e4SLinus Torvalds 3531da177e4SLinus Torvalds /* setup legacy IO port space */ 3541da177e4SLinus Torvalds io_space[0].mmio_base = ia64_iobase; 3551da177e4SLinus Torvalds io_space[0].sparse = 1; 3561da177e4SLinus Torvalds num_io_spaces = 1; 3571da177e4SLinus Torvalds } 3581da177e4SLinus Torvalds 3591da177e4SLinus Torvalds /** 3601da177e4SLinus Torvalds * early_console_setup - setup debugging console 3611da177e4SLinus Torvalds * 3621da177e4SLinus Torvalds * Consoles started here require little enough setup that we can start using 3631da177e4SLinus Torvalds * them very early in the boot process, either right after the machine 3641da177e4SLinus Torvalds * vector initialization, or even before if the drivers can detect their hw. 3651da177e4SLinus Torvalds * 3661da177e4SLinus Torvalds * Returns non-zero if a console couldn't be setup. 3671da177e4SLinus Torvalds */ 3681da177e4SLinus Torvalds static inline int __init 3691da177e4SLinus Torvalds early_console_setup (char *cmdline) 3701da177e4SLinus Torvalds { 37166b7f8a3SMark Maule int earlycons = 0; 37266b7f8a3SMark Maule 3731da177e4SLinus Torvalds #ifdef CONFIG_SERIAL_SGI_L1_CONSOLE 3741da177e4SLinus Torvalds { 3751da177e4SLinus Torvalds extern int sn_serial_console_early_setup(void); 3761da177e4SLinus Torvalds if (!sn_serial_console_early_setup()) 37766b7f8a3SMark Maule earlycons++; 3781da177e4SLinus Torvalds } 3791da177e4SLinus Torvalds #endif 3801da177e4SLinus Torvalds #ifdef CONFIG_EFI_PCDP 3811da177e4SLinus Torvalds if (!efi_setup_pcdp_console(cmdline)) 38266b7f8a3SMark Maule earlycons++; 3831da177e4SLinus Torvalds #endif 3841da177e4SLinus Torvalds #ifdef CONFIG_SERIAL_8250_CONSOLE 3851da177e4SLinus Torvalds if (!early_serial_console_init(cmdline)) 38666b7f8a3SMark Maule earlycons++; 3871da177e4SLinus Torvalds #endif 3881da177e4SLinus Torvalds 38966b7f8a3SMark Maule return (earlycons) ? 0 : -1; 3901da177e4SLinus Torvalds } 3911da177e4SLinus Torvalds 3921da177e4SLinus Torvalds static inline void 3931da177e4SLinus Torvalds mark_bsp_online (void) 3941da177e4SLinus Torvalds { 3951da177e4SLinus Torvalds #ifdef CONFIG_SMP 3961da177e4SLinus Torvalds /* If we register an early console, allow CPU 0 to printk */ 3971da177e4SLinus Torvalds cpu_set(smp_processor_id(), cpu_online_map); 3981da177e4SLinus Torvalds #endif 3991da177e4SLinus Torvalds } 4001da177e4SLinus Torvalds 401e927ecb0SSuresh Siddha #ifdef CONFIG_SMP 402244fd545SChen, Kenneth W static void __init 403e927ecb0SSuresh Siddha check_for_logical_procs (void) 404e927ecb0SSuresh Siddha { 405e927ecb0SSuresh Siddha pal_logical_to_physical_t info; 406e927ecb0SSuresh Siddha s64 status; 407e927ecb0SSuresh Siddha 408e927ecb0SSuresh Siddha status = ia64_pal_logical_to_phys(0, &info); 409e927ecb0SSuresh Siddha if (status == -1) { 410e927ecb0SSuresh Siddha printk(KERN_INFO "No logical to physical processor mapping " 411e927ecb0SSuresh Siddha "available\n"); 412e927ecb0SSuresh Siddha return; 413e927ecb0SSuresh Siddha } 414e927ecb0SSuresh Siddha if (status) { 415e927ecb0SSuresh Siddha printk(KERN_ERR "ia64_pal_logical_to_phys failed with %ld\n", 416e927ecb0SSuresh Siddha status); 417e927ecb0SSuresh Siddha return; 418e927ecb0SSuresh Siddha } 419e927ecb0SSuresh Siddha /* 420e927ecb0SSuresh Siddha * Total number of siblings that BSP has. Though not all of them 421e927ecb0SSuresh Siddha * may have booted successfully. The correct number of siblings 422e927ecb0SSuresh Siddha * booted is in info.overview_num_log. 423e927ecb0SSuresh Siddha */ 424e927ecb0SSuresh Siddha smp_num_siblings = info.overview_tpc; 425e927ecb0SSuresh Siddha smp_num_cpucores = info.overview_cpp; 426e927ecb0SSuresh Siddha } 427e927ecb0SSuresh Siddha #endif 428e927ecb0SSuresh Siddha 429a5b00bb4SHorms static __initdata int nomca; 430a5b00bb4SHorms static __init int setup_nomca(char *s) 431a5b00bb4SHorms { 432a5b00bb4SHorms nomca = 1; 433a5b00bb4SHorms return 0; 434a5b00bb4SHorms } 435a5b00bb4SHorms early_param("nomca", setup_nomca); 436a5b00bb4SHorms 4371da177e4SLinus Torvalds void __init 4381da177e4SLinus Torvalds setup_arch (char **cmdline_p) 4391da177e4SLinus Torvalds { 4401da177e4SLinus Torvalds unw_init(); 4411da177e4SLinus Torvalds 4421da177e4SLinus Torvalds ia64_patch_vtop((u64) __start___vtop_patchlist, (u64) __end___vtop_patchlist); 4431da177e4SLinus Torvalds 4441da177e4SLinus Torvalds *cmdline_p = __va(ia64_boot_param->command_line); 4451da177e4SLinus Torvalds strlcpy(saved_command_line, *cmdline_p, COMMAND_LINE_SIZE); 4461da177e4SLinus Torvalds 4471da177e4SLinus Torvalds efi_init(); 4481da177e4SLinus Torvalds io_port_init(); 4491da177e4SLinus Torvalds 450a5b00bb4SHorms parse_early_param(); 451a5b00bb4SHorms 4521da177e4SLinus Torvalds #ifdef CONFIG_IA64_GENERIC 453a5b00bb4SHorms machvec_init(NULL); 4541da177e4SLinus Torvalds #endif 4551da177e4SLinus Torvalds 4561da177e4SLinus Torvalds if (early_console_setup(*cmdline_p) == 0) 4571da177e4SLinus Torvalds mark_bsp_online(); 4581da177e4SLinus Torvalds 459888ba6c6SLen Brown #ifdef CONFIG_ACPI 4601da177e4SLinus Torvalds /* Initialize the ACPI boot-time table parser */ 4611da177e4SLinus Torvalds acpi_table_init(); 4621da177e4SLinus Torvalds # ifdef CONFIG_ACPI_NUMA 4631da177e4SLinus Torvalds acpi_numa_init(); 4641da177e4SLinus Torvalds # endif 4651da177e4SLinus Torvalds #else 4661da177e4SLinus Torvalds # ifdef CONFIG_SMP 4671da177e4SLinus Torvalds smp_build_cpu_map(); /* happens, e.g., with the Ski simulator */ 4681da177e4SLinus Torvalds # endif 4691da177e4SLinus Torvalds #endif /* CONFIG_APCI_BOOT */ 4701da177e4SLinus Torvalds 4711da177e4SLinus Torvalds find_memory(); 4721da177e4SLinus Torvalds 4731da177e4SLinus Torvalds /* process SAL system table: */ 474b2c99e3cSBjorn Helgaas ia64_sal_init(__va(efi.sal_systab)); 4751da177e4SLinus Torvalds 476d6e56a2aSTony Luck ia64_setup_printk_clock(); 477d6e56a2aSTony Luck 4781da177e4SLinus Torvalds #ifdef CONFIG_SMP 4791da177e4SLinus Torvalds cpu_physical_id(0) = hard_smp_processor_id(); 480e927ecb0SSuresh Siddha 481e927ecb0SSuresh Siddha cpu_set(0, cpu_sibling_map[0]); 482e927ecb0SSuresh Siddha cpu_set(0, cpu_core_map[0]); 483e927ecb0SSuresh Siddha 484e927ecb0SSuresh Siddha check_for_logical_procs(); 485e927ecb0SSuresh Siddha if (smp_num_cpucores > 1) 486e927ecb0SSuresh Siddha printk(KERN_INFO 487e927ecb0SSuresh Siddha "cpu package is Multi-Core capable: number of cores=%d\n", 488e927ecb0SSuresh Siddha smp_num_cpucores); 489e927ecb0SSuresh Siddha if (smp_num_siblings > 1) 490e927ecb0SSuresh Siddha printk(KERN_INFO 491e927ecb0SSuresh Siddha "cpu package is Multi-Threading capable: number of siblings=%d\n", 492e927ecb0SSuresh Siddha smp_num_siblings); 4931da177e4SLinus Torvalds #endif 4941da177e4SLinus Torvalds 4951da177e4SLinus Torvalds cpu_init(); /* initialize the bootstrap CPU */ 496dcc17d1bSPeter Keilty mmu_context_init(); /* initialize context_id bitmap */ 4971da177e4SLinus Torvalds 498fa1d19e5STroy Heber check_sal_cache_flush(); 499fa1d19e5STroy Heber 500888ba6c6SLen Brown #ifdef CONFIG_ACPI 5011da177e4SLinus Torvalds acpi_boot_init(); 5021da177e4SLinus Torvalds #endif 5031da177e4SLinus Torvalds 5041da177e4SLinus Torvalds #ifdef CONFIG_VT 5051da177e4SLinus Torvalds if (!conswitchp) { 5061da177e4SLinus Torvalds # if defined(CONFIG_DUMMY_CONSOLE) 5071da177e4SLinus Torvalds conswitchp = &dummy_con; 5081da177e4SLinus Torvalds # endif 5091da177e4SLinus Torvalds # if defined(CONFIG_VGA_CONSOLE) 5101da177e4SLinus Torvalds /* 5111da177e4SLinus Torvalds * Non-legacy systems may route legacy VGA MMIO range to system 5121da177e4SLinus Torvalds * memory. vga_con probes the MMIO hole, so memory looks like 5131da177e4SLinus Torvalds * a VGA device to it. The EFI memory map can tell us if it's 5141da177e4SLinus Torvalds * memory so we can avoid this problem. 5151da177e4SLinus Torvalds */ 5161da177e4SLinus Torvalds if (efi_mem_type(0xA0000) != EFI_CONVENTIONAL_MEMORY) 5171da177e4SLinus Torvalds conswitchp = &vga_con; 5181da177e4SLinus Torvalds # endif 5191da177e4SLinus Torvalds } 5201da177e4SLinus Torvalds #endif 5211da177e4SLinus Torvalds 5221da177e4SLinus Torvalds /* enable IA-64 Machine Check Abort Handling unless disabled */ 523a5b00bb4SHorms if (!nomca) 5241da177e4SLinus Torvalds ia64_mca_init(); 5251da177e4SLinus Torvalds 5261da177e4SLinus Torvalds platform_setup(cmdline_p); 5271da177e4SLinus Torvalds paging_init(); 5281da177e4SLinus Torvalds } 5291da177e4SLinus Torvalds 5301da177e4SLinus Torvalds /* 5311da177e4SLinus Torvalds * Display cpu info for all cpu's. 5321da177e4SLinus Torvalds */ 5331da177e4SLinus Torvalds static int 5341da177e4SLinus Torvalds show_cpuinfo (struct seq_file *m, void *v) 5351da177e4SLinus Torvalds { 5361da177e4SLinus Torvalds #ifdef CONFIG_SMP 5371da177e4SLinus Torvalds # define lpj c->loops_per_jiffy 5381da177e4SLinus Torvalds # define cpunum c->cpu 5391da177e4SLinus Torvalds #else 5401da177e4SLinus Torvalds # define lpj loops_per_jiffy 5411da177e4SLinus Torvalds # define cpunum 0 5421da177e4SLinus Torvalds #endif 5431da177e4SLinus Torvalds static struct { 5441da177e4SLinus Torvalds unsigned long mask; 5451da177e4SLinus Torvalds const char *feature_name; 5461da177e4SLinus Torvalds } feature_bits[] = { 5471da177e4SLinus Torvalds { 1UL << 0, "branchlong" }, 5481da177e4SLinus Torvalds { 1UL << 1, "spontaneous deferral"}, 5491da177e4SLinus Torvalds { 1UL << 2, "16-byte atomic ops" } 5501da177e4SLinus Torvalds }; 55176d08bb3STony Luck char features[128], *cp, sep; 5521da177e4SLinus Torvalds struct cpuinfo_ia64 *c = v; 5531da177e4SLinus Torvalds unsigned long mask; 55438c0b2c2STony Luck unsigned long proc_freq; 5551da177e4SLinus Torvalds int i; 5561da177e4SLinus Torvalds 5571da177e4SLinus Torvalds mask = c->features; 5581da177e4SLinus Torvalds 5591da177e4SLinus Torvalds /* build the feature string: */ 5601da177e4SLinus Torvalds memcpy(features, " standard", 10); 5611da177e4SLinus Torvalds cp = features; 5621da177e4SLinus Torvalds sep = 0; 5631da177e4SLinus Torvalds for (i = 0; i < (int) ARRAY_SIZE(feature_bits); ++i) { 5641da177e4SLinus Torvalds if (mask & feature_bits[i].mask) { 5651da177e4SLinus Torvalds if (sep) 5661da177e4SLinus Torvalds *cp++ = sep; 5671da177e4SLinus Torvalds sep = ','; 5681da177e4SLinus Torvalds *cp++ = ' '; 5691da177e4SLinus Torvalds strcpy(cp, feature_bits[i].feature_name); 5701da177e4SLinus Torvalds cp += strlen(feature_bits[i].feature_name); 5711da177e4SLinus Torvalds mask &= ~feature_bits[i].mask; 5721da177e4SLinus Torvalds } 5731da177e4SLinus Torvalds } 5741da177e4SLinus Torvalds if (mask) { 5751da177e4SLinus Torvalds /* print unknown features as a hex value: */ 5761da177e4SLinus Torvalds if (sep) 5771da177e4SLinus Torvalds *cp++ = sep; 5781da177e4SLinus Torvalds sprintf(cp, " 0x%lx", mask); 5791da177e4SLinus Torvalds } 5801da177e4SLinus Torvalds 58195235ca2SVenkatesh Pallipadi proc_freq = cpufreq_quick_get(cpunum); 58295235ca2SVenkatesh Pallipadi if (!proc_freq) 58395235ca2SVenkatesh Pallipadi proc_freq = c->proc_freq / 1000; 58495235ca2SVenkatesh Pallipadi 5851da177e4SLinus Torvalds seq_printf(m, 5861da177e4SLinus Torvalds "processor : %d\n" 5871da177e4SLinus Torvalds "vendor : %s\n" 5881da177e4SLinus Torvalds "arch : IA-64\n" 58976d08bb3STony Luck "family : %u\n" 5901da177e4SLinus Torvalds "model : %u\n" 59176d08bb3STony Luck "model name : %s\n" 5921da177e4SLinus Torvalds "revision : %u\n" 5931da177e4SLinus Torvalds "archrev : %u\n" 5941da177e4SLinus Torvalds "features :%s\n" /* don't change this---it _is_ right! */ 5951da177e4SLinus Torvalds "cpu number : %lu\n" 5961da177e4SLinus Torvalds "cpu regs : %u\n" 5971da177e4SLinus Torvalds "cpu MHz : %lu.%06lu\n" 5981da177e4SLinus Torvalds "itc MHz : %lu.%06lu\n" 599e927ecb0SSuresh Siddha "BogoMIPS : %lu.%02lu\n", 60076d08bb3STony Luck cpunum, c->vendor, c->family, c->model, 60176d08bb3STony Luck c->model_name, c->revision, c->archrev, 6021da177e4SLinus Torvalds features, c->ppn, c->number, 60395235ca2SVenkatesh Pallipadi proc_freq / 1000, proc_freq % 1000, 6041da177e4SLinus Torvalds c->itc_freq / 1000000, c->itc_freq % 1000000, 6051da177e4SLinus Torvalds lpj*HZ/500000, (lpj*HZ/5000) % 100); 606e927ecb0SSuresh Siddha #ifdef CONFIG_SMP 607ce6e71adSSiddha, Suresh B seq_printf(m, "siblings : %u\n", cpus_weight(cpu_core_map[cpunum])); 608e927ecb0SSuresh Siddha if (c->threads_per_core > 1 || c->cores_per_socket > 1) 609e927ecb0SSuresh Siddha seq_printf(m, 610e927ecb0SSuresh Siddha "physical id: %u\n" 611e927ecb0SSuresh Siddha "core id : %u\n" 612e927ecb0SSuresh Siddha "thread id : %u\n", 613e927ecb0SSuresh Siddha c->socket_id, c->core_id, c->thread_id); 614e927ecb0SSuresh Siddha #endif 615e927ecb0SSuresh Siddha seq_printf(m,"\n"); 616e927ecb0SSuresh Siddha 6171da177e4SLinus Torvalds return 0; 6181da177e4SLinus Torvalds } 6191da177e4SLinus Torvalds 6201da177e4SLinus Torvalds static void * 6211da177e4SLinus Torvalds c_start (struct seq_file *m, loff_t *pos) 6221da177e4SLinus Torvalds { 6231da177e4SLinus Torvalds #ifdef CONFIG_SMP 6241da177e4SLinus Torvalds while (*pos < NR_CPUS && !cpu_isset(*pos, cpu_online_map)) 6251da177e4SLinus Torvalds ++*pos; 6261da177e4SLinus Torvalds #endif 6271da177e4SLinus Torvalds return *pos < NR_CPUS ? cpu_data(*pos) : NULL; 6281da177e4SLinus Torvalds } 6291da177e4SLinus Torvalds 6301da177e4SLinus Torvalds static void * 6311da177e4SLinus Torvalds c_next (struct seq_file *m, void *v, loff_t *pos) 6321da177e4SLinus Torvalds { 6331da177e4SLinus Torvalds ++*pos; 6341da177e4SLinus Torvalds return c_start(m, pos); 6351da177e4SLinus Torvalds } 6361da177e4SLinus Torvalds 6371da177e4SLinus Torvalds static void 6381da177e4SLinus Torvalds c_stop (struct seq_file *m, void *v) 6391da177e4SLinus Torvalds { 6401da177e4SLinus Torvalds } 6411da177e4SLinus Torvalds 6421da177e4SLinus Torvalds struct seq_operations cpuinfo_op = { 6431da177e4SLinus Torvalds .start = c_start, 6441da177e4SLinus Torvalds .next = c_next, 6451da177e4SLinus Torvalds .stop = c_stop, 6461da177e4SLinus Torvalds .show = show_cpuinfo 6471da177e4SLinus Torvalds }; 6481da177e4SLinus Torvalds 64976d08bb3STony Luck static char brandname[128]; 65076d08bb3STony Luck 65176d08bb3STony Luck static char * __cpuinit 65276d08bb3STony Luck get_model_name(__u8 family, __u8 model) 65376d08bb3STony Luck { 65476d08bb3STony Luck char brand[128]; 65576d08bb3STony Luck 65676d08bb3STony Luck if (ia64_pal_get_brand_info(brand)) { 65776d08bb3STony Luck if (family == 0x7) 65876d08bb3STony Luck memcpy(brand, "Merced", 7); 65976d08bb3STony Luck else if (family == 0x1f) switch (model) { 66076d08bb3STony Luck case 0: memcpy(brand, "McKinley", 9); break; 66176d08bb3STony Luck case 1: memcpy(brand, "Madison", 8); break; 66276d08bb3STony Luck case 2: memcpy(brand, "Madison up to 9M cache", 23); break; 66376d08bb3STony Luck } else 66476d08bb3STony Luck memcpy(brand, "Unknown", 8); 66576d08bb3STony Luck } 66676d08bb3STony Luck if (brandname[0] == '\0') 66776d08bb3STony Luck return strcpy(brandname, brand); 66876d08bb3STony Luck else if (strcmp(brandname, brand) == 0) 66976d08bb3STony Luck return brandname; 67076d08bb3STony Luck else 67176d08bb3STony Luck return kstrdup(brand, GFP_KERNEL); 67276d08bb3STony Luck } 67376d08bb3STony Luck 674244fd545SChen, Kenneth W static void __cpuinit 6751da177e4SLinus Torvalds identify_cpu (struct cpuinfo_ia64 *c) 6761da177e4SLinus Torvalds { 6771da177e4SLinus Torvalds union { 6781da177e4SLinus Torvalds unsigned long bits[5]; 6791da177e4SLinus Torvalds struct { 6801da177e4SLinus Torvalds /* id 0 & 1: */ 6811da177e4SLinus Torvalds char vendor[16]; 6821da177e4SLinus Torvalds 6831da177e4SLinus Torvalds /* id 2 */ 6841da177e4SLinus Torvalds u64 ppn; /* processor serial number */ 6851da177e4SLinus Torvalds 6861da177e4SLinus Torvalds /* id 3: */ 6871da177e4SLinus Torvalds unsigned number : 8; 6881da177e4SLinus Torvalds unsigned revision : 8; 6891da177e4SLinus Torvalds unsigned model : 8; 6901da177e4SLinus Torvalds unsigned family : 8; 6911da177e4SLinus Torvalds unsigned archrev : 8; 6921da177e4SLinus Torvalds unsigned reserved : 24; 6931da177e4SLinus Torvalds 6941da177e4SLinus Torvalds /* id 4: */ 6951da177e4SLinus Torvalds u64 features; 6961da177e4SLinus Torvalds } field; 6971da177e4SLinus Torvalds } cpuid; 6981da177e4SLinus Torvalds pal_vm_info_1_u_t vm1; 6991da177e4SLinus Torvalds pal_vm_info_2_u_t vm2; 7001da177e4SLinus Torvalds pal_status_t status; 7011da177e4SLinus Torvalds unsigned long impl_va_msb = 50, phys_addr_size = 44; /* Itanium defaults */ 7021da177e4SLinus Torvalds int i; 7031da177e4SLinus Torvalds for (i = 0; i < 5; ++i) 7041da177e4SLinus Torvalds cpuid.bits[i] = ia64_get_cpuid(i); 7051da177e4SLinus Torvalds 7061da177e4SLinus Torvalds memcpy(c->vendor, cpuid.field.vendor, 16); 7071da177e4SLinus Torvalds #ifdef CONFIG_SMP 7081da177e4SLinus Torvalds c->cpu = smp_processor_id(); 709e927ecb0SSuresh Siddha 710e927ecb0SSuresh Siddha /* below default values will be overwritten by identify_siblings() 711e927ecb0SSuresh Siddha * for Multi-Threading/Multi-Core capable cpu's 712e927ecb0SSuresh Siddha */ 713e927ecb0SSuresh Siddha c->threads_per_core = c->cores_per_socket = c->num_log = 1; 714e927ecb0SSuresh Siddha c->socket_id = -1; 715e927ecb0SSuresh Siddha 716e927ecb0SSuresh Siddha identify_siblings(c); 7171da177e4SLinus Torvalds #endif 7181da177e4SLinus Torvalds c->ppn = cpuid.field.ppn; 7191da177e4SLinus Torvalds c->number = cpuid.field.number; 7201da177e4SLinus Torvalds c->revision = cpuid.field.revision; 7211da177e4SLinus Torvalds c->model = cpuid.field.model; 7221da177e4SLinus Torvalds c->family = cpuid.field.family; 7231da177e4SLinus Torvalds c->archrev = cpuid.field.archrev; 7241da177e4SLinus Torvalds c->features = cpuid.field.features; 72576d08bb3STony Luck c->model_name = get_model_name(c->family, c->model); 7261da177e4SLinus Torvalds 7271da177e4SLinus Torvalds status = ia64_pal_vm_summary(&vm1, &vm2); 7281da177e4SLinus Torvalds if (status == PAL_STATUS_SUCCESS) { 7291da177e4SLinus Torvalds impl_va_msb = vm2.pal_vm_info_2_s.impl_va_msb; 7301da177e4SLinus Torvalds phys_addr_size = vm1.pal_vm_info_1_s.phys_add_size; 7311da177e4SLinus Torvalds } 7321da177e4SLinus Torvalds c->unimpl_va_mask = ~((7L<<61) | ((1L << (impl_va_msb + 1)) - 1)); 7331da177e4SLinus Torvalds c->unimpl_pa_mask = ~((1L<<63) | ((1L << phys_addr_size) - 1)); 7341da177e4SLinus Torvalds } 7351da177e4SLinus Torvalds 7361da177e4SLinus Torvalds void 7371da177e4SLinus Torvalds setup_per_cpu_areas (void) 7381da177e4SLinus Torvalds { 7391da177e4SLinus Torvalds /* start_kernel() requires this... */ 740a6b14fa6SAshok Raj #ifdef CONFIG_ACPI_HOTPLUG_CPU 741a6b14fa6SAshok Raj prefill_possible_map(); 742a6b14fa6SAshok Raj #endif 7431da177e4SLinus Torvalds } 7441da177e4SLinus Torvalds 74508357f82SZoltan Menyhart /* 74608357f82SZoltan Menyhart * Calculate the max. cache line size. 74708357f82SZoltan Menyhart * 74808357f82SZoltan Menyhart * In addition, the minimum of the i-cache stride sizes is calculated for 74908357f82SZoltan Menyhart * "flush_icache_range()". 75008357f82SZoltan Menyhart */ 751244fd545SChen, Kenneth W static void __cpuinit 7521da177e4SLinus Torvalds get_max_cacheline_size (void) 7531da177e4SLinus Torvalds { 7541da177e4SLinus Torvalds unsigned long line_size, max = 1; 755198e2f18Sakpm@osdl.org unsigned int cache_size = 0; 7561da177e4SLinus Torvalds u64 l, levels, unique_caches; 7571da177e4SLinus Torvalds pal_cache_config_info_t cci; 7581da177e4SLinus Torvalds s64 status; 7591da177e4SLinus Torvalds 7601da177e4SLinus Torvalds status = ia64_pal_cache_summary(&levels, &unique_caches); 7611da177e4SLinus Torvalds if (status != 0) { 7621da177e4SLinus Torvalds printk(KERN_ERR "%s: ia64_pal_cache_summary() failed (status=%ld)\n", 7631da177e4SLinus Torvalds __FUNCTION__, status); 7641da177e4SLinus Torvalds max = SMP_CACHE_BYTES; 76508357f82SZoltan Menyhart /* Safest setup for "flush_icache_range()" */ 76608357f82SZoltan Menyhart ia64_i_cache_stride_shift = I_CACHE_STRIDE_SHIFT; 7671da177e4SLinus Torvalds goto out; 7681da177e4SLinus Torvalds } 7691da177e4SLinus Torvalds 7701da177e4SLinus Torvalds for (l = 0; l < levels; ++l) { 7711da177e4SLinus Torvalds status = ia64_pal_cache_config_info(l, /* cache_type (data_or_unified)= */ 2, 7721da177e4SLinus Torvalds &cci); 7731da177e4SLinus Torvalds if (status != 0) { 7741da177e4SLinus Torvalds printk(KERN_ERR 77508357f82SZoltan Menyhart "%s: ia64_pal_cache_config_info(l=%lu, 2) failed (status=%ld)\n", 7761da177e4SLinus Torvalds __FUNCTION__, l, status); 7771da177e4SLinus Torvalds max = SMP_CACHE_BYTES; 77808357f82SZoltan Menyhart /* The safest setup for "flush_icache_range()" */ 77908357f82SZoltan Menyhart cci.pcci_stride = I_CACHE_STRIDE_SHIFT; 78008357f82SZoltan Menyhart cci.pcci_unified = 1; 7811da177e4SLinus Torvalds } 7821da177e4SLinus Torvalds line_size = 1 << cci.pcci_line_size; 7831da177e4SLinus Torvalds if (line_size > max) 7841da177e4SLinus Torvalds max = line_size; 785198e2f18Sakpm@osdl.org if (cache_size < cci.pcci_cache_size) 786198e2f18Sakpm@osdl.org cache_size = cci.pcci_cache_size; 78708357f82SZoltan Menyhart if (!cci.pcci_unified) { 78808357f82SZoltan Menyhart status = ia64_pal_cache_config_info(l, 78908357f82SZoltan Menyhart /* cache_type (instruction)= */ 1, 79008357f82SZoltan Menyhart &cci); 79108357f82SZoltan Menyhart if (status != 0) { 79208357f82SZoltan Menyhart printk(KERN_ERR 79308357f82SZoltan Menyhart "%s: ia64_pal_cache_config_info(l=%lu, 1) failed (status=%ld)\n", 79408357f82SZoltan Menyhart __FUNCTION__, l, status); 79508357f82SZoltan Menyhart /* The safest setup for "flush_icache_range()" */ 79608357f82SZoltan Menyhart cci.pcci_stride = I_CACHE_STRIDE_SHIFT; 79708357f82SZoltan Menyhart } 79808357f82SZoltan Menyhart } 79908357f82SZoltan Menyhart if (cci.pcci_stride < ia64_i_cache_stride_shift) 80008357f82SZoltan Menyhart ia64_i_cache_stride_shift = cci.pcci_stride; 8011da177e4SLinus Torvalds } 8021da177e4SLinus Torvalds out: 803198e2f18Sakpm@osdl.org #ifdef CONFIG_SMP 804198e2f18Sakpm@osdl.org max_cache_size = max(max_cache_size, cache_size); 805198e2f18Sakpm@osdl.org #endif 8061da177e4SLinus Torvalds if (max > ia64_max_cacheline_size) 8071da177e4SLinus Torvalds ia64_max_cacheline_size = max; 8081da177e4SLinus Torvalds } 8091da177e4SLinus Torvalds 8101da177e4SLinus Torvalds /* 8111da177e4SLinus Torvalds * cpu_init() initializes state that is per-CPU. This function acts 8121da177e4SLinus Torvalds * as a 'CPU state barrier', nothing should get across. 8131da177e4SLinus Torvalds */ 814244fd545SChen, Kenneth W void __cpuinit 8151da177e4SLinus Torvalds cpu_init (void) 8161da177e4SLinus Torvalds { 817244fd545SChen, Kenneth W extern void __cpuinit ia64_mmu_init (void *); 8181da177e4SLinus Torvalds unsigned long num_phys_stacked; 8191da177e4SLinus Torvalds pal_vm_info_2_u_t vmi; 8201da177e4SLinus Torvalds unsigned int max_ctx; 8211da177e4SLinus Torvalds struct cpuinfo_ia64 *cpu_info; 8221da177e4SLinus Torvalds void *cpu_data; 8231da177e4SLinus Torvalds 8241da177e4SLinus Torvalds cpu_data = per_cpu_init(); 8251da177e4SLinus Torvalds 8261da177e4SLinus Torvalds /* 8271da177e4SLinus Torvalds * We set ar.k3 so that assembly code in MCA handler can compute 8281da177e4SLinus Torvalds * physical addresses of per cpu variables with a simple: 8291da177e4SLinus Torvalds * phys = ar.k3 + &per_cpu_var 8301da177e4SLinus Torvalds */ 8311da177e4SLinus Torvalds ia64_set_kr(IA64_KR_PER_CPU_DATA, 8321da177e4SLinus Torvalds ia64_tpa(cpu_data) - (long) __per_cpu_start); 8331da177e4SLinus Torvalds 8341da177e4SLinus Torvalds get_max_cacheline_size(); 8351da177e4SLinus Torvalds 8361da177e4SLinus Torvalds /* 8371da177e4SLinus Torvalds * We can't pass "local_cpu_data" to identify_cpu() because we haven't called 8381da177e4SLinus Torvalds * ia64_mmu_init() yet. And we can't call ia64_mmu_init() first because it 8391da177e4SLinus Torvalds * depends on the data returned by identify_cpu(). We break the dependency by 8401da177e4SLinus Torvalds * accessing cpu_data() through the canonical per-CPU address. 8411da177e4SLinus Torvalds */ 8421da177e4SLinus Torvalds cpu_info = cpu_data + ((char *) &__ia64_per_cpu_var(cpu_info) - __per_cpu_start); 8431da177e4SLinus Torvalds identify_cpu(cpu_info); 8441da177e4SLinus Torvalds 8451da177e4SLinus Torvalds #ifdef CONFIG_MCKINLEY 8461da177e4SLinus Torvalds { 8471da177e4SLinus Torvalds # define FEATURE_SET 16 8481da177e4SLinus Torvalds struct ia64_pal_retval iprv; 8491da177e4SLinus Torvalds 8501da177e4SLinus Torvalds if (cpu_info->family == 0x1f) { 8511da177e4SLinus Torvalds PAL_CALL_PHYS(iprv, PAL_PROC_GET_FEATURES, 0, FEATURE_SET, 0); 8521da177e4SLinus Torvalds if ((iprv.status == 0) && (iprv.v0 & 0x80) && (iprv.v2 & 0x80)) 8531da177e4SLinus Torvalds PAL_CALL_PHYS(iprv, PAL_PROC_SET_FEATURES, 8541da177e4SLinus Torvalds (iprv.v1 | 0x80), FEATURE_SET, 0); 8551da177e4SLinus Torvalds } 8561da177e4SLinus Torvalds } 8571da177e4SLinus Torvalds #endif 8581da177e4SLinus Torvalds 8591da177e4SLinus Torvalds /* Clear the stack memory reserved for pt_regs: */ 8606450578fSAl Viro memset(task_pt_regs(current), 0, sizeof(struct pt_regs)); 8611da177e4SLinus Torvalds 8621da177e4SLinus Torvalds ia64_set_kr(IA64_KR_FPU_OWNER, 0); 8631da177e4SLinus Torvalds 8641da177e4SLinus Torvalds /* 8651da177e4SLinus Torvalds * Initialize the page-table base register to a global 8661da177e4SLinus Torvalds * directory with all zeroes. This ensure that we can handle 8671da177e4SLinus Torvalds * TLB-misses to user address-space even before we created the 8681da177e4SLinus Torvalds * first user address-space. This may happen, e.g., due to 8691da177e4SLinus Torvalds * aggressive use of lfetch.fault. 8701da177e4SLinus Torvalds */ 8711da177e4SLinus Torvalds ia64_set_kr(IA64_KR_PT_BASE, __pa(ia64_imva(empty_zero_page))); 8721da177e4SLinus Torvalds 8731da177e4SLinus Torvalds /* 87486ebacd3STony Luck * Initialize default control register to defer speculative faults except 87586ebacd3STony Luck * for those arising from TLB misses, which are not deferred. The 8761da177e4SLinus Torvalds * kernel MUST NOT depend on a particular setting of these bits (in other words, 8771da177e4SLinus Torvalds * the kernel must have recovery code for all speculative accesses). Turn on 8781da177e4SLinus Torvalds * dcr.lc as per recommendation by the architecture team. Most IA-32 apps 8791da177e4SLinus Torvalds * shouldn't be affected by this (moral: keep your ia32 locks aligned and you'll 8801da177e4SLinus Torvalds * be fine). 8811da177e4SLinus Torvalds */ 8821da177e4SLinus Torvalds ia64_setreg(_IA64_REG_CR_DCR, ( IA64_DCR_DP | IA64_DCR_DK | IA64_DCR_DX | IA64_DCR_DR 8831da177e4SLinus Torvalds | IA64_DCR_DA | IA64_DCR_DD | IA64_DCR_LC)); 8841da177e4SLinus Torvalds atomic_inc(&init_mm.mm_count); 8851da177e4SLinus Torvalds current->active_mm = &init_mm; 8861da177e4SLinus Torvalds if (current->mm) 8871da177e4SLinus Torvalds BUG(); 8881da177e4SLinus Torvalds 8891da177e4SLinus Torvalds ia64_mmu_init(ia64_imva(cpu_data)); 8901da177e4SLinus Torvalds ia64_mca_cpu_init(ia64_imva(cpu_data)); 8911da177e4SLinus Torvalds 8921da177e4SLinus Torvalds #ifdef CONFIG_IA32_SUPPORT 8931da177e4SLinus Torvalds ia32_cpu_init(); 8941da177e4SLinus Torvalds #endif 8951da177e4SLinus Torvalds 8961da177e4SLinus Torvalds /* Clear ITC to eliminiate sched_clock() overflows in human time. */ 8971da177e4SLinus Torvalds ia64_set_itc(0); 8981da177e4SLinus Torvalds 8991da177e4SLinus Torvalds /* disable all local interrupt sources: */ 9001da177e4SLinus Torvalds ia64_set_itv(1 << 16); 9011da177e4SLinus Torvalds ia64_set_lrr0(1 << 16); 9021da177e4SLinus Torvalds ia64_set_lrr1(1 << 16); 9031da177e4SLinus Torvalds ia64_setreg(_IA64_REG_CR_PMV, 1 << 16); 9041da177e4SLinus Torvalds ia64_setreg(_IA64_REG_CR_CMCV, 1 << 16); 9051da177e4SLinus Torvalds 9061da177e4SLinus Torvalds /* clear TPR & XTP to enable all interrupt classes: */ 9071da177e4SLinus Torvalds ia64_setreg(_IA64_REG_CR_TPR, 0); 9081da177e4SLinus Torvalds #ifdef CONFIG_SMP 9091da177e4SLinus Torvalds normal_xtp(); 9101da177e4SLinus Torvalds #endif 9111da177e4SLinus Torvalds 9121da177e4SLinus Torvalds /* set ia64_ctx.max_rid to the maximum RID that is supported by all CPUs: */ 9131da177e4SLinus Torvalds if (ia64_pal_vm_summary(NULL, &vmi) == 0) 9141da177e4SLinus Torvalds max_ctx = (1U << (vmi.pal_vm_info_2_s.rid_size - 3)) - 1; 9151da177e4SLinus Torvalds else { 9161da177e4SLinus Torvalds printk(KERN_WARNING "cpu_init: PAL VM summary failed, assuming 18 RID bits\n"); 9171da177e4SLinus Torvalds max_ctx = (1U << 15) - 1; /* use architected minimum */ 9181da177e4SLinus Torvalds } 9191da177e4SLinus Torvalds while (max_ctx < ia64_ctx.max_ctx) { 9201da177e4SLinus Torvalds unsigned int old = ia64_ctx.max_ctx; 9211da177e4SLinus Torvalds if (cmpxchg(&ia64_ctx.max_ctx, old, max_ctx) == old) 9221da177e4SLinus Torvalds break; 9231da177e4SLinus Torvalds } 9241da177e4SLinus Torvalds 9251da177e4SLinus Torvalds if (ia64_pal_rse_info(&num_phys_stacked, NULL) != 0) { 9261da177e4SLinus Torvalds printk(KERN_WARNING "cpu_init: PAL RSE info failed; assuming 96 physical " 9271da177e4SLinus Torvalds "stacked regs\n"); 9281da177e4SLinus Torvalds num_phys_stacked = 96; 9291da177e4SLinus Torvalds } 9301da177e4SLinus Torvalds /* size of physical stacked register partition plus 8 bytes: */ 9311da177e4SLinus Torvalds __get_cpu_var(ia64_phys_stacked_size_p8) = num_phys_stacked*8 + 8; 9321da177e4SLinus Torvalds platform_cpu_init(); 9336c4fa560SVenkatesh Pallipadi pm_idle = default_idle; 9341da177e4SLinus Torvalds } 9351da177e4SLinus Torvalds 9364dc7a0bbSIngo Molnar /* 9374dc7a0bbSIngo Molnar * On SMP systems, when the scheduler does migration-cost autodetection, 9384dc7a0bbSIngo Molnar * it needs a way to flush as much of the CPU's caches as possible. 9394dc7a0bbSIngo Molnar */ 9404dc7a0bbSIngo Molnar void sched_cacheflush(void) 9414dc7a0bbSIngo Molnar { 9424dc7a0bbSIngo Molnar ia64_sal_cache_flush(3); 9434dc7a0bbSIngo Molnar } 9444dc7a0bbSIngo Molnar 945244fd545SChen, Kenneth W void __init 9461da177e4SLinus Torvalds check_bugs (void) 9471da177e4SLinus Torvalds { 9481da177e4SLinus Torvalds ia64_patch_mckinley_e9((unsigned long) __start___mckinley_e9_bundles, 9491da177e4SLinus Torvalds (unsigned long) __end___mckinley_e9_bundles); 9501da177e4SLinus Torvalds } 9513ed3bce8SMatt Domsch 9523ed3bce8SMatt Domsch static int __init run_dmi_scan(void) 9533ed3bce8SMatt Domsch { 9543ed3bce8SMatt Domsch dmi_scan_machine(); 9553ed3bce8SMatt Domsch return 0; 9563ed3bce8SMatt Domsch } 9573ed3bce8SMatt Domsch core_initcall(run_dmi_scan); 958