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> 54e51835d5SIsaku Yamahata #include <asm/paravirt.h> 5503f511ddSIsaku Yamahata #include <asm/paravirt_patch.h> 561da177e4SLinus Torvalds #include <asm/patch.h> 571da177e4SLinus Torvalds #include <asm/pgtable.h> 581da177e4SLinus Torvalds #include <asm/processor.h> 591da177e4SLinus Torvalds #include <asm/sal.h> 601da177e4SLinus Torvalds #include <asm/sections.h> 611da177e4SLinus Torvalds #include <asm/setup.h> 621da177e4SLinus Torvalds #include <asm/smp.h> 631da177e4SLinus Torvalds #include <asm/system.h> 642046b94eSFenghua Yu #include <asm/tlbflush.h> 651da177e4SLinus Torvalds #include <asm/unistd.h> 668b713c67SPeter Chubb #include <asm/hpsim.h> 671da177e4SLinus Torvalds 681da177e4SLinus Torvalds #if defined(CONFIG_SMP) && (IA64_CPU_SIZE > PAGE_SIZE) 691da177e4SLinus Torvalds # error "struct cpuinfo_ia64 too big!" 701da177e4SLinus Torvalds #endif 711da177e4SLinus Torvalds 721da177e4SLinus Torvalds #ifdef CONFIG_SMP 731da177e4SLinus Torvalds unsigned long __per_cpu_offset[NR_CPUS]; 741da177e4SLinus Torvalds EXPORT_SYMBOL(__per_cpu_offset); 751da177e4SLinus Torvalds #endif 761da177e4SLinus Torvalds 771da177e4SLinus Torvalds DEFINE_PER_CPU(struct cpuinfo_ia64, cpu_info); 781da177e4SLinus Torvalds DEFINE_PER_CPU(unsigned long, local_per_cpu_offset); 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 }; 9400bf4098SBernhard Walle 9500bf4098SBernhard Walle static struct resource bss_resource = { 9600bf4098SBernhard Walle .name = "Kernel bss", 9700bf4098SBernhard Walle .flags = IORESOURCE_BUSY | IORESOURCE_MEM 9800bf4098SBernhard Walle }; 99be379124SKhalid Aziz 1001da177e4SLinus Torvalds unsigned long ia64_max_cacheline_size; 101e1531b42SJohn W. Linville 102e1531b42SJohn W. Linville int dma_get_cache_alignment(void) 103e1531b42SJohn W. Linville { 104e1531b42SJohn W. Linville return ia64_max_cacheline_size; 105e1531b42SJohn W. Linville } 106e1531b42SJohn W. Linville EXPORT_SYMBOL(dma_get_cache_alignment); 107e1531b42SJohn W. Linville 1081da177e4SLinus Torvalds unsigned long ia64_iobase; /* virtual address for I/O accesses */ 1091da177e4SLinus Torvalds EXPORT_SYMBOL(ia64_iobase); 1101da177e4SLinus Torvalds struct io_space io_space[MAX_IO_SPACES]; 1111da177e4SLinus Torvalds EXPORT_SYMBOL(io_space); 1121da177e4SLinus Torvalds unsigned int num_io_spaces; 1131da177e4SLinus Torvalds 1141da177e4SLinus Torvalds /* 11508357f82SZoltan Menyhart * "flush_icache_range()" needs to know what processor dependent stride size to use 11608357f82SZoltan Menyhart * when it makes i-cache(s) coherent with d-caches. 11708357f82SZoltan Menyhart */ 11808357f82SZoltan Menyhart #define I_CACHE_STRIDE_SHIFT 5 /* Safest way to go: 32 bytes by 32 bytes */ 11908357f82SZoltan Menyhart unsigned long ia64_i_cache_stride_shift = ~0; 12062fdd767SFenghua Yu /* 12162fdd767SFenghua Yu * "clflush_cache_range()" needs to know what processor dependent stride size to 12262fdd767SFenghua Yu * use when it flushes cache lines including both d-cache and i-cache. 12362fdd767SFenghua Yu */ 12462fdd767SFenghua Yu /* Safest way to go: 32 bytes by 32 bytes */ 12562fdd767SFenghua Yu #define CACHE_STRIDE_SHIFT 5 12662fdd767SFenghua Yu unsigned long ia64_cache_stride_shift = ~0; 12708357f82SZoltan Menyhart 12808357f82SZoltan Menyhart /* 1291da177e4SLinus Torvalds * The merge_mask variable needs to be set to (max(iommu_page_size(iommu)) - 1). This 1301da177e4SLinus Torvalds * mask specifies a mask of address bits that must be 0 in order for two buffers to be 1311da177e4SLinus Torvalds * mergeable by the I/O MMU (i.e., the end address of the first buffer and the start 1321da177e4SLinus Torvalds * address of the second buffer must be aligned to (merge_mask+1) in order to be 1331da177e4SLinus Torvalds * mergeable). By default, we assume there is no I/O MMU which can merge physically 1341da177e4SLinus Torvalds * discontiguous buffers, so we set the merge_mask to ~0UL, which corresponds to a iommu 1351da177e4SLinus Torvalds * page-size of 2^64. 1361da177e4SLinus Torvalds */ 1371da177e4SLinus Torvalds unsigned long ia64_max_iommu_merge_mask = ~0UL; 1381da177e4SLinus Torvalds EXPORT_SYMBOL(ia64_max_iommu_merge_mask); 1391da177e4SLinus Torvalds 1401da177e4SLinus Torvalds /* 1411da177e4SLinus Torvalds * We use a special marker for the end of memory and it uses the extra (+1) slot 1421da177e4SLinus Torvalds */ 143dae28066SChen, Kenneth W struct rsvd_region rsvd_region[IA64_MAX_RSVD_REGIONS + 1] __initdata; 144dae28066SChen, Kenneth W int num_rsvd_regions __initdata; 1451da177e4SLinus Torvalds 1461da177e4SLinus Torvalds 1471da177e4SLinus Torvalds /* 1481da177e4SLinus Torvalds * Filter incoming memory segments based on the primitive map created from the boot 1491da177e4SLinus Torvalds * parameters. Segments contained in the map are removed from the memory ranges. A 1501da177e4SLinus Torvalds * caller-specified function is called with the memory ranges that remain after filtering. 1511da177e4SLinus Torvalds * This routine does not assume the incoming segments are sorted. 1521da177e4SLinus Torvalds */ 153dae28066SChen, Kenneth W int __init 154e088a4adSMatthew Wilcox filter_rsvd_memory (u64 start, u64 end, void *arg) 1551da177e4SLinus Torvalds { 156e088a4adSMatthew Wilcox u64 range_start, range_end, prev_start; 1571da177e4SLinus Torvalds void (*func)(unsigned long, unsigned long, int); 1581da177e4SLinus Torvalds int i; 1591da177e4SLinus Torvalds 1601da177e4SLinus Torvalds #if IGNORE_PFN0 1611da177e4SLinus Torvalds if (start == PAGE_OFFSET) { 1621da177e4SLinus Torvalds printk(KERN_WARNING "warning: skipping physical page 0\n"); 1631da177e4SLinus Torvalds start += PAGE_SIZE; 1641da177e4SLinus Torvalds if (start >= end) return 0; 1651da177e4SLinus Torvalds } 1661da177e4SLinus Torvalds #endif 1671da177e4SLinus Torvalds /* 1681da177e4SLinus Torvalds * lowest possible address(walker uses virtual) 1691da177e4SLinus Torvalds */ 1701da177e4SLinus Torvalds prev_start = PAGE_OFFSET; 1711da177e4SLinus Torvalds func = arg; 1721da177e4SLinus Torvalds 1731da177e4SLinus Torvalds for (i = 0; i < num_rsvd_regions; ++i) { 1741da177e4SLinus Torvalds range_start = max(start, prev_start); 1751da177e4SLinus Torvalds range_end = min(end, rsvd_region[i].start); 1761da177e4SLinus Torvalds 1771da177e4SLinus Torvalds if (range_start < range_end) 1781da177e4SLinus Torvalds call_pernode_memory(__pa(range_start), range_end - range_start, func); 1791da177e4SLinus Torvalds 1801da177e4SLinus Torvalds /* nothing more available in this segment */ 1811da177e4SLinus Torvalds if (range_end == end) return 0; 1821da177e4SLinus Torvalds 1831da177e4SLinus Torvalds prev_start = rsvd_region[i].end; 1841da177e4SLinus Torvalds } 1851da177e4SLinus Torvalds /* end of memory marker allows full processing inside loop body */ 1861da177e4SLinus Torvalds return 0; 1871da177e4SLinus Torvalds } 1881da177e4SLinus Torvalds 18998075d24SZoltan Menyhart /* 19098075d24SZoltan Menyhart * Similar to "filter_rsvd_memory()", but the reserved memory ranges 19198075d24SZoltan Menyhart * are not filtered out. 19298075d24SZoltan Menyhart */ 19398075d24SZoltan Menyhart int __init 194e088a4adSMatthew Wilcox filter_memory(u64 start, u64 end, void *arg) 19598075d24SZoltan Menyhart { 19698075d24SZoltan Menyhart void (*func)(unsigned long, unsigned long, int); 19798075d24SZoltan Menyhart 19898075d24SZoltan Menyhart #if IGNORE_PFN0 19998075d24SZoltan Menyhart if (start == PAGE_OFFSET) { 20098075d24SZoltan Menyhart printk(KERN_WARNING "warning: skipping physical page 0\n"); 20198075d24SZoltan Menyhart start += PAGE_SIZE; 20298075d24SZoltan Menyhart if (start >= end) 20398075d24SZoltan Menyhart return 0; 20498075d24SZoltan Menyhart } 20598075d24SZoltan Menyhart #endif 20698075d24SZoltan Menyhart func = arg; 20798075d24SZoltan Menyhart if (start < end) 20898075d24SZoltan Menyhart call_pernode_memory(__pa(start), end - start, func); 20998075d24SZoltan Menyhart return 0; 21098075d24SZoltan Menyhart } 21198075d24SZoltan Menyhart 212dae28066SChen, Kenneth W static void __init 2131da177e4SLinus Torvalds sort_regions (struct rsvd_region *rsvd_region, int max) 2141da177e4SLinus Torvalds { 2151da177e4SLinus Torvalds int j; 2161da177e4SLinus Torvalds 2171da177e4SLinus Torvalds /* simple bubble sorting */ 2181da177e4SLinus Torvalds while (max--) { 2191da177e4SLinus Torvalds for (j = 0; j < max; ++j) { 2201da177e4SLinus Torvalds if (rsvd_region[j].start > rsvd_region[j+1].start) { 2211da177e4SLinus Torvalds struct rsvd_region tmp; 2221da177e4SLinus Torvalds tmp = rsvd_region[j]; 2231da177e4SLinus Torvalds rsvd_region[j] = rsvd_region[j + 1]; 2241da177e4SLinus Torvalds rsvd_region[j + 1] = tmp; 2251da177e4SLinus Torvalds } 2261da177e4SLinus Torvalds } 2271da177e4SLinus Torvalds } 2281da177e4SLinus Torvalds } 2291da177e4SLinus Torvalds 230be379124SKhalid Aziz /* 231be379124SKhalid Aziz * Request address space for all standard resources 232be379124SKhalid Aziz */ 233be379124SKhalid Aziz static int __init register_memory(void) 234be379124SKhalid Aziz { 235be379124SKhalid Aziz code_resource.start = ia64_tpa(_text); 236be379124SKhalid Aziz code_resource.end = ia64_tpa(_etext) - 1; 237be379124SKhalid Aziz data_resource.start = ia64_tpa(_etext); 23800bf4098SBernhard Walle data_resource.end = ia64_tpa(_edata) - 1; 239b898a424SBernhard Walle bss_resource.start = ia64_tpa(__bss_start); 24000bf4098SBernhard Walle bss_resource.end = ia64_tpa(_end) - 1; 24100bf4098SBernhard Walle efi_initialize_iomem_resources(&code_resource, &data_resource, 24200bf4098SBernhard Walle &bss_resource); 243be379124SKhalid Aziz 244be379124SKhalid Aziz return 0; 245be379124SKhalid Aziz } 246be379124SKhalid Aziz 247be379124SKhalid Aziz __initcall(register_memory); 248be379124SKhalid Aziz 249cb380853SBernhard Walle 250cb380853SBernhard Walle #ifdef CONFIG_KEXEC 2518a3360f0SBernhard Walle 2528a3360f0SBernhard Walle /* 2538a3360f0SBernhard Walle * This function checks if the reserved crashkernel is allowed on the specific 2548a3360f0SBernhard Walle * IA64 machine flavour. Machines without an IO TLB use swiotlb and require 2558a3360f0SBernhard Walle * some memory below 4 GB (i.e. in 32 bit area), see the implementation of 2568a3360f0SBernhard Walle * lib/swiotlb.c. The hpzx1 architecture has an IO TLB but cannot use that 2578a3360f0SBernhard Walle * in kdump case. See the comment in sba_init() in sba_iommu.c. 2588a3360f0SBernhard Walle * 2598a3360f0SBernhard Walle * So, the only machvec that really supports loading the kdump kernel 2608a3360f0SBernhard Walle * over 4 GB is "sn2". 2618a3360f0SBernhard Walle */ 2628a3360f0SBernhard Walle static int __init check_crashkernel_memory(unsigned long pbase, size_t size) 2638a3360f0SBernhard Walle { 2648a3360f0SBernhard Walle if (ia64_platform_is("sn2") || ia64_platform_is("uv")) 2658a3360f0SBernhard Walle return 1; 2668a3360f0SBernhard Walle else 2678a3360f0SBernhard Walle return pbase < (1UL << 32); 2688a3360f0SBernhard Walle } 2698a3360f0SBernhard Walle 270cb380853SBernhard Walle static void __init setup_crashkernel(unsigned long total, int *n) 271cb380853SBernhard Walle { 272cb380853SBernhard Walle unsigned long long base = 0, size = 0; 273cb380853SBernhard Walle int ret; 274cb380853SBernhard Walle 275cb380853SBernhard Walle ret = parse_crashkernel(boot_command_line, total, 276cb380853SBernhard Walle &size, &base); 277cb380853SBernhard Walle if (ret == 0 && size > 0) { 278cb380853SBernhard Walle if (!base) { 279cb380853SBernhard Walle sort_regions(rsvd_region, *n); 280cb380853SBernhard Walle base = kdump_find_rsvd_region(size, 281cb380853SBernhard Walle rsvd_region, *n); 282cb380853SBernhard Walle } 2838a3360f0SBernhard Walle 2848a3360f0SBernhard Walle if (!check_crashkernel_memory(base, size)) { 2858a3360f0SBernhard Walle pr_warning("crashkernel: There would be kdump memory " 2868a3360f0SBernhard Walle "at %ld GB but this is unusable because it " 2878a3360f0SBernhard Walle "must\nbe below 4 GB. Change the memory " 2888a3360f0SBernhard Walle "configuration of the machine.\n", 2898a3360f0SBernhard Walle (unsigned long)(base >> 30)); 2908a3360f0SBernhard Walle return; 2918a3360f0SBernhard Walle } 2928a3360f0SBernhard Walle 293cb380853SBernhard Walle if (base != ~0UL) { 294cb380853SBernhard Walle printk(KERN_INFO "Reserving %ldMB of memory at %ldMB " 295cb380853SBernhard Walle "for crashkernel (System RAM: %ldMB)\n", 296cb380853SBernhard Walle (unsigned long)(size >> 20), 297cb380853SBernhard Walle (unsigned long)(base >> 20), 298cb380853SBernhard Walle (unsigned long)(total >> 20)); 299cb380853SBernhard Walle rsvd_region[*n].start = 300cb380853SBernhard Walle (unsigned long)__va(base); 301cb380853SBernhard Walle rsvd_region[*n].end = 302cb380853SBernhard Walle (unsigned long)__va(base + size); 303cb380853SBernhard Walle (*n)++; 304cb380853SBernhard Walle crashk_res.start = base; 305cb380853SBernhard Walle crashk_res.end = base + size - 1; 306cb380853SBernhard Walle } 307cb380853SBernhard Walle } 308cb380853SBernhard Walle efi_memmap_res.start = ia64_boot_param->efi_memmap; 309cb380853SBernhard Walle efi_memmap_res.end = efi_memmap_res.start + 310cb380853SBernhard Walle ia64_boot_param->efi_memmap_size; 311cb380853SBernhard Walle boot_param_res.start = __pa(ia64_boot_param); 312cb380853SBernhard Walle boot_param_res.end = boot_param_res.start + 313cb380853SBernhard Walle sizeof(*ia64_boot_param); 314cb380853SBernhard Walle } 315cb380853SBernhard Walle #else 316cb380853SBernhard Walle static inline void __init setup_crashkernel(unsigned long total, int *n) 317cb380853SBernhard Walle {} 318cb380853SBernhard Walle #endif 319cb380853SBernhard Walle 3201da177e4SLinus Torvalds /** 3211da177e4SLinus Torvalds * reserve_memory - setup reserved memory areas 3221da177e4SLinus Torvalds * 3231da177e4SLinus Torvalds * Setup the reserved memory areas set aside for the boot parameters, 3241da177e4SLinus Torvalds * initrd, etc. There are currently %IA64_MAX_RSVD_REGIONS defined, 3257f30491cSTony Luck * see arch/ia64/include/asm/meminit.h if you need to define more. 3261da177e4SLinus Torvalds */ 327dae28066SChen, Kenneth W void __init 3281da177e4SLinus Torvalds reserve_memory (void) 3291da177e4SLinus Torvalds { 3301da177e4SLinus Torvalds int n = 0; 331cb380853SBernhard Walle unsigned long total_memory; 3321da177e4SLinus Torvalds 3331da177e4SLinus Torvalds /* 3341da177e4SLinus Torvalds * none of the entries in this table overlap 3351da177e4SLinus Torvalds */ 3361da177e4SLinus Torvalds rsvd_region[n].start = (unsigned long) ia64_boot_param; 3371da177e4SLinus Torvalds rsvd_region[n].end = rsvd_region[n].start + sizeof(*ia64_boot_param); 3381da177e4SLinus Torvalds n++; 3391da177e4SLinus Torvalds 3401da177e4SLinus Torvalds rsvd_region[n].start = (unsigned long) __va(ia64_boot_param->efi_memmap); 3411da177e4SLinus Torvalds rsvd_region[n].end = rsvd_region[n].start + ia64_boot_param->efi_memmap_size; 3421da177e4SLinus Torvalds n++; 3431da177e4SLinus Torvalds 3441da177e4SLinus Torvalds rsvd_region[n].start = (unsigned long) __va(ia64_boot_param->command_line); 3451da177e4SLinus Torvalds rsvd_region[n].end = (rsvd_region[n].start 3461da177e4SLinus Torvalds + strlen(__va(ia64_boot_param->command_line)) + 1); 3471da177e4SLinus Torvalds n++; 3481da177e4SLinus Torvalds 3491da177e4SLinus Torvalds rsvd_region[n].start = (unsigned long) ia64_imva((void *)KERNEL_START); 3501da177e4SLinus Torvalds rsvd_region[n].end = (unsigned long) ia64_imva(_end); 3511da177e4SLinus Torvalds n++; 3521da177e4SLinus Torvalds 353e51835d5SIsaku Yamahata n += paravirt_reserve_memory(&rsvd_region[n]); 354e51835d5SIsaku Yamahata 3551da177e4SLinus Torvalds #ifdef CONFIG_BLK_DEV_INITRD 3561da177e4SLinus Torvalds if (ia64_boot_param->initrd_start) { 3571da177e4SLinus Torvalds rsvd_region[n].start = (unsigned long)__va(ia64_boot_param->initrd_start); 3581da177e4SLinus Torvalds rsvd_region[n].end = rsvd_region[n].start + ia64_boot_param->initrd_size; 3591da177e4SLinus Torvalds n++; 3601da177e4SLinus Torvalds } 3611da177e4SLinus Torvalds #endif 3621da177e4SLinus Torvalds 36317c1f07eSJay Lan #ifdef CONFIG_CRASH_DUMP 364cee87af2SMagnus Damm if (reserve_elfcorehdr(&rsvd_region[n].start, 365cee87af2SMagnus Damm &rsvd_region[n].end) == 0) 366cee87af2SMagnus Damm n++; 367cee87af2SMagnus Damm #endif 368cee87af2SMagnus Damm 369cb380853SBernhard Walle total_memory = efi_memmap_init(&rsvd_region[n].start, &rsvd_region[n].end); 370d8c97d5fSTony Luck n++; 371d8c97d5fSTony Luck 372cb380853SBernhard Walle setup_crashkernel(total_memory, &n); 373cb380853SBernhard Walle 3741da177e4SLinus Torvalds /* end of memory marker */ 3751da177e4SLinus Torvalds rsvd_region[n].start = ~0UL; 3761da177e4SLinus Torvalds rsvd_region[n].end = ~0UL; 3771da177e4SLinus Torvalds n++; 3781da177e4SLinus Torvalds 3791da177e4SLinus Torvalds num_rsvd_regions = n; 3805eb1d63fSAlex Williamson BUG_ON(IA64_MAX_RSVD_REGIONS + 1 < n); 3811da177e4SLinus Torvalds 3821da177e4SLinus Torvalds sort_regions(rsvd_region, num_rsvd_regions); 3831da177e4SLinus Torvalds } 3841da177e4SLinus Torvalds 385a7956113SZou Nan hai 3861da177e4SLinus Torvalds /** 3871da177e4SLinus Torvalds * find_initrd - get initrd parameters from the boot parameter structure 3881da177e4SLinus Torvalds * 3891da177e4SLinus Torvalds * Grab the initrd start and end from the boot parameter struct given us by 3901da177e4SLinus Torvalds * the boot loader. 3911da177e4SLinus Torvalds */ 392dae28066SChen, Kenneth W void __init 3931da177e4SLinus Torvalds find_initrd (void) 3941da177e4SLinus Torvalds { 3951da177e4SLinus Torvalds #ifdef CONFIG_BLK_DEV_INITRD 3961da177e4SLinus Torvalds if (ia64_boot_param->initrd_start) { 3971da177e4SLinus Torvalds initrd_start = (unsigned long)__va(ia64_boot_param->initrd_start); 3981da177e4SLinus Torvalds initrd_end = initrd_start+ia64_boot_param->initrd_size; 3991da177e4SLinus Torvalds 400e088a4adSMatthew Wilcox printk(KERN_INFO "Initial ramdisk at: 0x%lx (%llu bytes)\n", 4011da177e4SLinus Torvalds initrd_start, ia64_boot_param->initrd_size); 4021da177e4SLinus Torvalds } 4031da177e4SLinus Torvalds #endif 4041da177e4SLinus Torvalds } 4051da177e4SLinus Torvalds 4061da177e4SLinus Torvalds static void __init 4071da177e4SLinus Torvalds io_port_init (void) 4081da177e4SLinus Torvalds { 4091da177e4SLinus Torvalds unsigned long phys_iobase; 4101da177e4SLinus Torvalds 4111da177e4SLinus Torvalds /* 41244c45120SBjorn Helgaas * Set `iobase' based on the EFI memory map or, failing that, the 41344c45120SBjorn Helgaas * value firmware left in ar.k0. 4141da177e4SLinus Torvalds * 41544c45120SBjorn Helgaas * Note that in ia32 mode, IN/OUT instructions use ar.k0 to compute 41644c45120SBjorn Helgaas * the port's virtual address, so ia32_load_state() loads it with a 41744c45120SBjorn Helgaas * user virtual address. But in ia64 mode, glibc uses the 41844c45120SBjorn Helgaas * *physical* address in ar.k0 to mmap the appropriate area from 41944c45120SBjorn Helgaas * /dev/mem, and the inX()/outX() interfaces use MMIO. In both 42044c45120SBjorn Helgaas * cases, user-mode can only use the legacy 0-64K I/O port space. 42144c45120SBjorn Helgaas * 42244c45120SBjorn Helgaas * ar.k0 is not involved in kernel I/O port accesses, which can use 42344c45120SBjorn Helgaas * any of the I/O port spaces and are done via MMIO using the 42444c45120SBjorn Helgaas * virtual mmio_base from the appropriate io_space[]. 4251da177e4SLinus Torvalds */ 4261da177e4SLinus Torvalds phys_iobase = efi_get_iobase(); 42744c45120SBjorn Helgaas if (!phys_iobase) { 4281da177e4SLinus Torvalds phys_iobase = ia64_get_kr(IA64_KR_IO_BASE); 42944c45120SBjorn Helgaas printk(KERN_INFO "No I/O port range found in EFI memory map, " 43044c45120SBjorn Helgaas "falling back to AR.KR0 (0x%lx)\n", phys_iobase); 4311da177e4SLinus Torvalds } 4321da177e4SLinus Torvalds ia64_iobase = (unsigned long) ioremap(phys_iobase, 0); 43344c45120SBjorn Helgaas ia64_set_kr(IA64_KR_IO_BASE, __pa(ia64_iobase)); 4341da177e4SLinus Torvalds 4351da177e4SLinus Torvalds /* setup legacy IO port space */ 4361da177e4SLinus Torvalds io_space[0].mmio_base = ia64_iobase; 4371da177e4SLinus Torvalds io_space[0].sparse = 1; 4381da177e4SLinus Torvalds num_io_spaces = 1; 4391da177e4SLinus Torvalds } 4401da177e4SLinus Torvalds 4411da177e4SLinus Torvalds /** 4421da177e4SLinus Torvalds * early_console_setup - setup debugging console 4431da177e4SLinus Torvalds * 4441da177e4SLinus Torvalds * Consoles started here require little enough setup that we can start using 4451da177e4SLinus Torvalds * them very early in the boot process, either right after the machine 4461da177e4SLinus Torvalds * vector initialization, or even before if the drivers can detect their hw. 4471da177e4SLinus Torvalds * 4481da177e4SLinus Torvalds * Returns non-zero if a console couldn't be setup. 4491da177e4SLinus Torvalds */ 4501da177e4SLinus Torvalds static inline int __init 4511da177e4SLinus Torvalds early_console_setup (char *cmdline) 4521da177e4SLinus Torvalds { 45366b7f8a3SMark Maule int earlycons = 0; 45466b7f8a3SMark Maule 4551da177e4SLinus Torvalds #ifdef CONFIG_SERIAL_SGI_L1_CONSOLE 4561da177e4SLinus Torvalds { 4571da177e4SLinus Torvalds extern int sn_serial_console_early_setup(void); 4581da177e4SLinus Torvalds if (!sn_serial_console_early_setup()) 45966b7f8a3SMark Maule earlycons++; 4601da177e4SLinus Torvalds } 4611da177e4SLinus Torvalds #endif 4621da177e4SLinus Torvalds #ifdef CONFIG_EFI_PCDP 4631da177e4SLinus Torvalds if (!efi_setup_pcdp_console(cmdline)) 46466b7f8a3SMark Maule earlycons++; 4651da177e4SLinus Torvalds #endif 4668b713c67SPeter Chubb if (!simcons_register()) 467471e7a44SPeter Chubb earlycons++; 4681da177e4SLinus Torvalds 46966b7f8a3SMark Maule return (earlycons) ? 0 : -1; 4701da177e4SLinus Torvalds } 4711da177e4SLinus Torvalds 4721da177e4SLinus Torvalds static inline void 4731da177e4SLinus Torvalds mark_bsp_online (void) 4741da177e4SLinus Torvalds { 4751da177e4SLinus Torvalds #ifdef CONFIG_SMP 4761da177e4SLinus Torvalds /* If we register an early console, allow CPU 0 to printk */ 4771da177e4SLinus Torvalds cpu_set(smp_processor_id(), cpu_online_map); 4781da177e4SLinus Torvalds #endif 4791da177e4SLinus Torvalds } 4801da177e4SLinus Torvalds 481a5b00bb4SHorms static __initdata int nomca; 482a5b00bb4SHorms static __init int setup_nomca(char *s) 483a5b00bb4SHorms { 484a5b00bb4SHorms nomca = 1; 485a5b00bb4SHorms return 0; 486a5b00bb4SHorms } 487a5b00bb4SHorms early_param("nomca", setup_nomca); 488a5b00bb4SHorms 48957cac4d1SVivek Goyal /* 49057cac4d1SVivek Goyal * Note: elfcorehdr_addr is not just limited to vmcore. It is also used by 49157cac4d1SVivek Goyal * is_kdump_kernel() to determine if we are booting after a panic. Hence 49257cac4d1SVivek Goyal * ifdef it under CONFIG_CRASH_DUMP and not CONFIG_PROC_VMCORE. 49357cac4d1SVivek Goyal */ 49457cac4d1SVivek Goyal #ifdef CONFIG_CRASH_DUMP 49545a98fc6SHorms /* elfcorehdr= specifies the location of elf core header 49645a98fc6SHorms * stored by the crashed kernel. 49745a98fc6SHorms */ 49845a98fc6SHorms static int __init parse_elfcorehdr(char *arg) 49945a98fc6SHorms { 50045a98fc6SHorms if (!arg) 50145a98fc6SHorms return -EINVAL; 50245a98fc6SHorms 50345a98fc6SHorms elfcorehdr_addr = memparse(arg, &arg); 50445a98fc6SHorms return 0; 50545a98fc6SHorms } 50645a98fc6SHorms early_param("elfcorehdr", parse_elfcorehdr); 507cee87af2SMagnus Damm 508e088a4adSMatthew Wilcox int __init reserve_elfcorehdr(u64 *start, u64 *end) 509cee87af2SMagnus Damm { 510e088a4adSMatthew Wilcox u64 length; 511cee87af2SMagnus Damm 512cee87af2SMagnus Damm /* We get the address using the kernel command line, 513cee87af2SMagnus Damm * but the size is extracted from the EFI tables. 514cee87af2SMagnus Damm * Both address and size are required for reservation 515cee87af2SMagnus Damm * to work properly. 516cee87af2SMagnus Damm */ 517cee87af2SMagnus Damm 51885a0ee34SSimon Horman if (!is_vmcore_usable()) 519cee87af2SMagnus Damm return -EINVAL; 520cee87af2SMagnus Damm 521cee87af2SMagnus Damm if ((length = vmcore_find_descriptor_size(elfcorehdr_addr)) == 0) { 52285a0ee34SSimon Horman vmcore_unusable(); 523cee87af2SMagnus Damm return -EINVAL; 524cee87af2SMagnus Damm } 525cee87af2SMagnus Damm 526cee87af2SMagnus Damm *start = (unsigned long)__va(elfcorehdr_addr); 527cee87af2SMagnus Damm *end = *start + length; 528cee87af2SMagnus Damm return 0; 529cee87af2SMagnus Damm } 530cee87af2SMagnus Damm 53145a98fc6SHorms #endif /* CONFIG_PROC_VMCORE */ 53245a98fc6SHorms 5331da177e4SLinus Torvalds void __init 5341da177e4SLinus Torvalds setup_arch (char **cmdline_p) 5351da177e4SLinus Torvalds { 5361da177e4SLinus Torvalds unw_init(); 5371da177e4SLinus Torvalds 538e51835d5SIsaku Yamahata paravirt_arch_setup_early(); 539e51835d5SIsaku Yamahata 5401da177e4SLinus Torvalds ia64_patch_vtop((u64) __start___vtop_patchlist, (u64) __end___vtop_patchlist); 54103f511ddSIsaku Yamahata paravirt_patch_apply(); 5421da177e4SLinus Torvalds 5431da177e4SLinus Torvalds *cmdline_p = __va(ia64_boot_param->command_line); 544a8d91b84SAlon Bar-Lev strlcpy(boot_command_line, *cmdline_p, COMMAND_LINE_SIZE); 5451da177e4SLinus Torvalds 5461da177e4SLinus Torvalds efi_init(); 5471da177e4SLinus Torvalds io_port_init(); 5481da177e4SLinus Torvalds 5491da177e4SLinus Torvalds #ifdef CONFIG_IA64_GENERIC 550a07ee862SHorms /* machvec needs to be parsed from the command line 551a07ee862SHorms * before parse_early_param() is called to ensure 552a07ee862SHorms * that ia64_mv is initialised before any command line 553a07ee862SHorms * settings may cause console setup to occur 554a07ee862SHorms */ 555a07ee862SHorms machvec_init_from_cmdline(*cmdline_p); 5561da177e4SLinus Torvalds #endif 5571da177e4SLinus Torvalds 558a07ee862SHorms parse_early_param(); 559a07ee862SHorms 5601da177e4SLinus Torvalds if (early_console_setup(*cmdline_p) == 0) 5611da177e4SLinus Torvalds mark_bsp_online(); 5621da177e4SLinus Torvalds 563888ba6c6SLen Brown #ifdef CONFIG_ACPI 5641da177e4SLinus Torvalds /* Initialize the ACPI boot-time table parser */ 5651da177e4SLinus Torvalds acpi_table_init(); 56662ee0540SDoug Chapman early_acpi_boot_init(); 5671da177e4SLinus Torvalds # ifdef CONFIG_ACPI_NUMA 5681da177e4SLinus Torvalds acpi_numa_init(); 56962ee0540SDoug Chapman # ifdef CONFIG_ACPI_HOTPLUG_CPU 57062ee0540SDoug Chapman prefill_possible_map(); 57162ee0540SDoug Chapman # endif 5722c6e6db4Sholt@sgi.com per_cpu_scan_finalize((cpus_weight(early_cpu_possible_map) == 0 ? 573dd4f0888STony Luck 32 : cpus_weight(early_cpu_possible_map)), 574dd4f0888STony Luck additional_cpus > 0 ? additional_cpus : 0); 5751da177e4SLinus Torvalds # endif 5761da177e4SLinus Torvalds #endif /* CONFIG_APCI_BOOT */ 5771da177e4SLinus Torvalds 57812cda817STejun Heo #ifdef CONFIG_SMP 57912cda817STejun Heo smp_build_cpu_map(); 58012cda817STejun Heo #endif 5811da177e4SLinus Torvalds find_memory(); 5821da177e4SLinus Torvalds 5831da177e4SLinus Torvalds /* process SAL system table: */ 584b2c99e3cSBjorn Helgaas ia64_sal_init(__va(efi.sal_systab)); 5851da177e4SLinus Torvalds 5864dcc29e1STony Luck #ifdef CONFIG_ITANIUM 5874dcc29e1STony Luck ia64_patch_rse((u64) __start___rse_patchlist, (u64) __end___rse_patchlist); 5884dcc29e1STony Luck #else 5894dcc29e1STony Luck { 590e088a4adSMatthew Wilcox unsigned long num_phys_stacked; 5914dcc29e1STony Luck 5924dcc29e1STony Luck if (ia64_pal_rse_info(&num_phys_stacked, 0) == 0 && num_phys_stacked > 96) 5934dcc29e1STony Luck ia64_patch_rse((u64) __start___rse_patchlist, (u64) __end___rse_patchlist); 5944dcc29e1STony Luck } 5954dcc29e1STony Luck #endif 5964dcc29e1STony Luck 5971da177e4SLinus Torvalds #ifdef CONFIG_SMP 5981da177e4SLinus Torvalds cpu_physical_id(0) = hard_smp_processor_id(); 5991da177e4SLinus Torvalds #endif 6001da177e4SLinus Torvalds 6011da177e4SLinus Torvalds cpu_init(); /* initialize the bootstrap CPU */ 602dcc17d1bSPeter Keilty mmu_context_init(); /* initialize context_id bitmap */ 6031da177e4SLinus Torvalds 604888ba6c6SLen Brown #ifdef CONFIG_ACPI 6051da177e4SLinus Torvalds acpi_boot_init(); 6061da177e4SLinus Torvalds #endif 6071da177e4SLinus Torvalds 608e51835d5SIsaku Yamahata paravirt_banner(); 609e51835d5SIsaku Yamahata paravirt_arch_setup_console(cmdline_p); 610e51835d5SIsaku Yamahata 6111da177e4SLinus Torvalds #ifdef CONFIG_VT 6121da177e4SLinus Torvalds if (!conswitchp) { 6131da177e4SLinus Torvalds # if defined(CONFIG_DUMMY_CONSOLE) 6141da177e4SLinus Torvalds conswitchp = &dummy_con; 6151da177e4SLinus Torvalds # endif 6161da177e4SLinus Torvalds # if defined(CONFIG_VGA_CONSOLE) 6171da177e4SLinus Torvalds /* 6181da177e4SLinus Torvalds * Non-legacy systems may route legacy VGA MMIO range to system 6191da177e4SLinus Torvalds * memory. vga_con probes the MMIO hole, so memory looks like 6201da177e4SLinus Torvalds * a VGA device to it. The EFI memory map can tell us if it's 6211da177e4SLinus Torvalds * memory so we can avoid this problem. 6221da177e4SLinus Torvalds */ 6231da177e4SLinus Torvalds if (efi_mem_type(0xA0000) != EFI_CONVENTIONAL_MEMORY) 6241da177e4SLinus Torvalds conswitchp = &vga_con; 6251da177e4SLinus Torvalds # endif 6261da177e4SLinus Torvalds } 6271da177e4SLinus Torvalds #endif 6281da177e4SLinus Torvalds 6291da177e4SLinus Torvalds /* enable IA-64 Machine Check Abort Handling unless disabled */ 630e51835d5SIsaku Yamahata if (paravirt_arch_setup_nomca()) 631e51835d5SIsaku Yamahata nomca = 1; 632a5b00bb4SHorms if (!nomca) 6331da177e4SLinus Torvalds ia64_mca_init(); 6341da177e4SLinus Torvalds 6351da177e4SLinus Torvalds platform_setup(cmdline_p); 63606f95ea8SAlex Chiang #ifndef CONFIG_IA64_HP_SIM 6372826f8c0SJes Sorensen check_sal_cache_flush(); 63806f95ea8SAlex Chiang #endif 6391da177e4SLinus Torvalds paging_init(); 6401da177e4SLinus Torvalds } 6411da177e4SLinus Torvalds 6421da177e4SLinus Torvalds /* 64372fdbdceSSimon Arlott * Display cpu info for all CPUs. 6441da177e4SLinus Torvalds */ 6451da177e4SLinus Torvalds static int 6461da177e4SLinus Torvalds show_cpuinfo (struct seq_file *m, void *v) 6471da177e4SLinus Torvalds { 6481da177e4SLinus Torvalds #ifdef CONFIG_SMP 6491da177e4SLinus Torvalds # define lpj c->loops_per_jiffy 6501da177e4SLinus Torvalds # define cpunum c->cpu 6511da177e4SLinus Torvalds #else 6521da177e4SLinus Torvalds # define lpj loops_per_jiffy 6531da177e4SLinus Torvalds # define cpunum 0 6541da177e4SLinus Torvalds #endif 6551da177e4SLinus Torvalds static struct { 6561da177e4SLinus Torvalds unsigned long mask; 6571da177e4SLinus Torvalds const char *feature_name; 6581da177e4SLinus Torvalds } feature_bits[] = { 6591da177e4SLinus Torvalds { 1UL << 0, "branchlong" }, 6601da177e4SLinus Torvalds { 1UL << 1, "spontaneous deferral"}, 6611da177e4SLinus Torvalds { 1UL << 2, "16-byte atomic ops" } 6621da177e4SLinus Torvalds }; 663ae0af3e3SAron Griffis char features[128], *cp, *sep; 6641da177e4SLinus Torvalds struct cpuinfo_ia64 *c = v; 6651da177e4SLinus Torvalds unsigned long mask; 66638c0b2c2STony Luck unsigned long proc_freq; 667ae0af3e3SAron Griffis int i, size; 6681da177e4SLinus Torvalds 6691da177e4SLinus Torvalds mask = c->features; 6701da177e4SLinus Torvalds 6711da177e4SLinus Torvalds /* build the feature string: */ 672ae0af3e3SAron Griffis memcpy(features, "standard", 9); 6731da177e4SLinus Torvalds cp = features; 674ae0af3e3SAron Griffis size = sizeof(features); 675ae0af3e3SAron Griffis sep = ""; 676ae0af3e3SAron Griffis for (i = 0; i < ARRAY_SIZE(feature_bits) && size > 1; ++i) { 6771da177e4SLinus Torvalds if (mask & feature_bits[i].mask) { 678ae0af3e3SAron Griffis cp += snprintf(cp, size, "%s%s", sep, 679ae0af3e3SAron Griffis feature_bits[i].feature_name), 680ae0af3e3SAron Griffis sep = ", "; 6811da177e4SLinus Torvalds mask &= ~feature_bits[i].mask; 682ae0af3e3SAron Griffis size = sizeof(features) - (cp - features); 6831da177e4SLinus Torvalds } 6841da177e4SLinus Torvalds } 685ae0af3e3SAron Griffis if (mask && size > 1) { 686ae0af3e3SAron Griffis /* print unknown features as a hex value */ 687ae0af3e3SAron Griffis snprintf(cp, size, "%s0x%lx", sep, mask); 6881da177e4SLinus Torvalds } 6891da177e4SLinus Torvalds 69095235ca2SVenkatesh Pallipadi proc_freq = cpufreq_quick_get(cpunum); 69195235ca2SVenkatesh Pallipadi if (!proc_freq) 69295235ca2SVenkatesh Pallipadi proc_freq = c->proc_freq / 1000; 69395235ca2SVenkatesh Pallipadi 6941da177e4SLinus Torvalds seq_printf(m, 6951da177e4SLinus Torvalds "processor : %d\n" 6961da177e4SLinus Torvalds "vendor : %s\n" 6971da177e4SLinus Torvalds "arch : IA-64\n" 69876d08bb3STony Luck "family : %u\n" 6991da177e4SLinus Torvalds "model : %u\n" 70076d08bb3STony Luck "model name : %s\n" 7011da177e4SLinus Torvalds "revision : %u\n" 7021da177e4SLinus Torvalds "archrev : %u\n" 703ae0af3e3SAron Griffis "features : %s\n" 7041da177e4SLinus Torvalds "cpu number : %lu\n" 7051da177e4SLinus Torvalds "cpu regs : %u\n" 7068a3a78d1SVenki Pallipadi "cpu MHz : %lu.%03lu\n" 7071da177e4SLinus Torvalds "itc MHz : %lu.%06lu\n" 708e927ecb0SSuresh Siddha "BogoMIPS : %lu.%02lu\n", 70976d08bb3STony Luck cpunum, c->vendor, c->family, c->model, 71076d08bb3STony Luck c->model_name, c->revision, c->archrev, 7111da177e4SLinus Torvalds features, c->ppn, c->number, 71295235ca2SVenkatesh Pallipadi proc_freq / 1000, proc_freq % 1000, 7131da177e4SLinus Torvalds c->itc_freq / 1000000, c->itc_freq % 1000000, 7141da177e4SLinus Torvalds lpj*HZ/500000, (lpj*HZ/5000) % 100); 715e927ecb0SSuresh Siddha #ifdef CONFIG_SMP 716ce6e71adSSiddha, Suresh B seq_printf(m, "siblings : %u\n", cpus_weight(cpu_core_map[cpunum])); 717113134fcSAlex Chiang if (c->socket_id != -1) 718113134fcSAlex Chiang seq_printf(m, "physical id: %u\n", c->socket_id); 719e927ecb0SSuresh Siddha if (c->threads_per_core > 1 || c->cores_per_socket > 1) 720e927ecb0SSuresh Siddha seq_printf(m, 721e927ecb0SSuresh Siddha "core id : %u\n" 722e927ecb0SSuresh Siddha "thread id : %u\n", 723113134fcSAlex Chiang c->core_id, c->thread_id); 724e927ecb0SSuresh Siddha #endif 725e927ecb0SSuresh Siddha seq_printf(m,"\n"); 726e927ecb0SSuresh Siddha 7271da177e4SLinus Torvalds return 0; 7281da177e4SLinus Torvalds } 7291da177e4SLinus Torvalds 7301da177e4SLinus Torvalds static void * 7311da177e4SLinus Torvalds c_start (struct seq_file *m, loff_t *pos) 7321da177e4SLinus Torvalds { 7331da177e4SLinus Torvalds #ifdef CONFIG_SMP 7345dd3c994SRusty Russell while (*pos < nr_cpu_ids && !cpu_online(*pos)) 7351da177e4SLinus Torvalds ++*pos; 7361da177e4SLinus Torvalds #endif 7375dd3c994SRusty Russell return *pos < nr_cpu_ids ? cpu_data(*pos) : NULL; 7381da177e4SLinus Torvalds } 7391da177e4SLinus Torvalds 7401da177e4SLinus Torvalds static void * 7411da177e4SLinus Torvalds c_next (struct seq_file *m, void *v, loff_t *pos) 7421da177e4SLinus Torvalds { 7431da177e4SLinus Torvalds ++*pos; 7441da177e4SLinus Torvalds return c_start(m, pos); 7451da177e4SLinus Torvalds } 7461da177e4SLinus Torvalds 7471da177e4SLinus Torvalds static void 7481da177e4SLinus Torvalds c_stop (struct seq_file *m, void *v) 7491da177e4SLinus Torvalds { 7501da177e4SLinus Torvalds } 7511da177e4SLinus Torvalds 752a23fe55eSJan Engelhardt const struct seq_operations cpuinfo_op = { 7531da177e4SLinus Torvalds .start = c_start, 7541da177e4SLinus Torvalds .next = c_next, 7551da177e4SLinus Torvalds .stop = c_stop, 7561da177e4SLinus Torvalds .show = show_cpuinfo 7571da177e4SLinus Torvalds }; 7581da177e4SLinus Torvalds 759c5e83e3fSJack Steiner #define MAX_BRANDS 8 760c5e83e3fSJack Steiner static char brandname[MAX_BRANDS][128]; 76176d08bb3STony Luck 76276d08bb3STony Luck static char * __cpuinit 76376d08bb3STony Luck get_model_name(__u8 family, __u8 model) 76476d08bb3STony Luck { 765c5e83e3fSJack Steiner static int overflow; 76676d08bb3STony Luck char brand[128]; 767c5e83e3fSJack Steiner int i; 76876d08bb3STony Luck 76975f6a1deSTony Luck memcpy(brand, "Unknown", 8); 77076d08bb3STony Luck if (ia64_pal_get_brand_info(brand)) { 77176d08bb3STony Luck if (family == 0x7) 77276d08bb3STony Luck memcpy(brand, "Merced", 7); 77376d08bb3STony Luck else if (family == 0x1f) switch (model) { 77476d08bb3STony Luck case 0: memcpy(brand, "McKinley", 9); break; 77576d08bb3STony Luck case 1: memcpy(brand, "Madison", 8); break; 77676d08bb3STony Luck case 2: memcpy(brand, "Madison up to 9M cache", 23); break; 77775f6a1deSTony Luck } 77876d08bb3STony Luck } 779c5e83e3fSJack Steiner for (i = 0; i < MAX_BRANDS; i++) 780c5e83e3fSJack Steiner if (strcmp(brandname[i], brand) == 0) 781c5e83e3fSJack Steiner return brandname[i]; 782c5e83e3fSJack Steiner for (i = 0; i < MAX_BRANDS; i++) 783c5e83e3fSJack Steiner if (brandname[i][0] == '\0') 784c5e83e3fSJack Steiner return strcpy(brandname[i], brand); 785c5e83e3fSJack Steiner if (overflow++ == 0) 786c5e83e3fSJack Steiner printk(KERN_ERR 787c5e83e3fSJack Steiner "%s: Table overflow. Some processor model information will be missing\n", 788d4ed8084SHarvey Harrison __func__); 789c5e83e3fSJack Steiner return "Unknown"; 79076d08bb3STony Luck } 79176d08bb3STony Luck 792244fd545SChen, Kenneth W static void __cpuinit 7931da177e4SLinus Torvalds identify_cpu (struct cpuinfo_ia64 *c) 7941da177e4SLinus Torvalds { 7951da177e4SLinus Torvalds union { 7961da177e4SLinus Torvalds unsigned long bits[5]; 7971da177e4SLinus Torvalds struct { 7981da177e4SLinus Torvalds /* id 0 & 1: */ 7991da177e4SLinus Torvalds char vendor[16]; 8001da177e4SLinus Torvalds 8011da177e4SLinus Torvalds /* id 2 */ 8021da177e4SLinus Torvalds u64 ppn; /* processor serial number */ 8031da177e4SLinus Torvalds 8041da177e4SLinus Torvalds /* id 3: */ 8051da177e4SLinus Torvalds unsigned number : 8; 8061da177e4SLinus Torvalds unsigned revision : 8; 8071da177e4SLinus Torvalds unsigned model : 8; 8081da177e4SLinus Torvalds unsigned family : 8; 8091da177e4SLinus Torvalds unsigned archrev : 8; 8101da177e4SLinus Torvalds unsigned reserved : 24; 8111da177e4SLinus Torvalds 8121da177e4SLinus Torvalds /* id 4: */ 8131da177e4SLinus Torvalds u64 features; 8141da177e4SLinus Torvalds } field; 8151da177e4SLinus Torvalds } cpuid; 8161da177e4SLinus Torvalds pal_vm_info_1_u_t vm1; 8171da177e4SLinus Torvalds pal_vm_info_2_u_t vm2; 8181da177e4SLinus Torvalds pal_status_t status; 8191da177e4SLinus Torvalds unsigned long impl_va_msb = 50, phys_addr_size = 44; /* Itanium defaults */ 8201da177e4SLinus Torvalds int i; 8211da177e4SLinus Torvalds for (i = 0; i < 5; ++i) 8221da177e4SLinus Torvalds cpuid.bits[i] = ia64_get_cpuid(i); 8231da177e4SLinus Torvalds 8241da177e4SLinus Torvalds memcpy(c->vendor, cpuid.field.vendor, 16); 8251da177e4SLinus Torvalds #ifdef CONFIG_SMP 8261da177e4SLinus Torvalds c->cpu = smp_processor_id(); 827e927ecb0SSuresh Siddha 828e927ecb0SSuresh Siddha /* below default values will be overwritten by identify_siblings() 82972fdbdceSSimon Arlott * for Multi-Threading/Multi-Core capable CPUs 830e927ecb0SSuresh Siddha */ 831e927ecb0SSuresh Siddha c->threads_per_core = c->cores_per_socket = c->num_log = 1; 832e927ecb0SSuresh Siddha c->socket_id = -1; 833e927ecb0SSuresh Siddha 834e927ecb0SSuresh Siddha identify_siblings(c); 835113134fcSAlex Chiang 836113134fcSAlex Chiang if (c->threads_per_core > smp_num_siblings) 837113134fcSAlex Chiang smp_num_siblings = c->threads_per_core; 8381da177e4SLinus Torvalds #endif 8391da177e4SLinus Torvalds c->ppn = cpuid.field.ppn; 8401da177e4SLinus Torvalds c->number = cpuid.field.number; 8411da177e4SLinus Torvalds c->revision = cpuid.field.revision; 8421da177e4SLinus Torvalds c->model = cpuid.field.model; 8431da177e4SLinus Torvalds c->family = cpuid.field.family; 8441da177e4SLinus Torvalds c->archrev = cpuid.field.archrev; 8451da177e4SLinus Torvalds c->features = cpuid.field.features; 84676d08bb3STony Luck c->model_name = get_model_name(c->family, c->model); 8471da177e4SLinus Torvalds 8481da177e4SLinus Torvalds status = ia64_pal_vm_summary(&vm1, &vm2); 8491da177e4SLinus Torvalds if (status == PAL_STATUS_SUCCESS) { 8501da177e4SLinus Torvalds impl_va_msb = vm2.pal_vm_info_2_s.impl_va_msb; 8511da177e4SLinus Torvalds phys_addr_size = vm1.pal_vm_info_1_s.phys_add_size; 8521da177e4SLinus Torvalds } 8531da177e4SLinus Torvalds c->unimpl_va_mask = ~((7L<<61) | ((1L << (impl_va_msb + 1)) - 1)); 8541da177e4SLinus Torvalds c->unimpl_pa_mask = ~((1L<<63) | ((1L << phys_addr_size) - 1)); 8551da177e4SLinus Torvalds } 8561da177e4SLinus Torvalds 857872fb6ddSFenghua Yu /* 858872fb6ddSFenghua Yu * In UP configuration, setup_per_cpu_areas() is defined in 859872fb6ddSFenghua Yu * include/linux/percpu.h 860872fb6ddSFenghua Yu */ 861872fb6ddSFenghua Yu #ifdef CONFIG_SMP 8620f7ac29eSTony Luck void __init 8631da177e4SLinus Torvalds setup_per_cpu_areas (void) 8641da177e4SLinus Torvalds { 8651da177e4SLinus Torvalds /* start_kernel() requires this... */ 8661da177e4SLinus Torvalds } 867872fb6ddSFenghua Yu #endif 8681da177e4SLinus Torvalds 86908357f82SZoltan Menyhart /* 87062fdd767SFenghua Yu * Do the following calculations: 87108357f82SZoltan Menyhart * 87262fdd767SFenghua Yu * 1. the max. cache line size. 87362fdd767SFenghua Yu * 2. the minimum of the i-cache stride sizes for "flush_icache_range()". 87462fdd767SFenghua Yu * 3. the minimum of the cache stride sizes for "clflush_cache_range()". 87508357f82SZoltan Menyhart */ 876244fd545SChen, Kenneth W static void __cpuinit 87762fdd767SFenghua Yu get_cache_info(void) 8781da177e4SLinus Torvalds { 8791da177e4SLinus Torvalds unsigned long line_size, max = 1; 880e088a4adSMatthew Wilcox unsigned long l, levels, unique_caches; 8811da177e4SLinus Torvalds pal_cache_config_info_t cci; 882e088a4adSMatthew Wilcox long status; 8831da177e4SLinus Torvalds 8841da177e4SLinus Torvalds status = ia64_pal_cache_summary(&levels, &unique_caches); 8851da177e4SLinus Torvalds if (status != 0) { 8861da177e4SLinus Torvalds printk(KERN_ERR "%s: ia64_pal_cache_summary() failed (status=%ld)\n", 887d4ed8084SHarvey Harrison __func__, status); 8881da177e4SLinus Torvalds max = SMP_CACHE_BYTES; 88908357f82SZoltan Menyhart /* Safest setup for "flush_icache_range()" */ 89008357f82SZoltan Menyhart ia64_i_cache_stride_shift = I_CACHE_STRIDE_SHIFT; 89162fdd767SFenghua Yu /* Safest setup for "clflush_cache_range()" */ 89262fdd767SFenghua Yu ia64_cache_stride_shift = CACHE_STRIDE_SHIFT; 8931da177e4SLinus Torvalds goto out; 8941da177e4SLinus Torvalds } 8951da177e4SLinus Torvalds 8961da177e4SLinus Torvalds for (l = 0; l < levels; ++l) { 89762fdd767SFenghua Yu /* cache_type (data_or_unified)=2 */ 89862fdd767SFenghua Yu status = ia64_pal_cache_config_info(l, 2, &cci); 8991da177e4SLinus Torvalds if (status != 0) { 900e088a4adSMatthew Wilcox printk(KERN_ERR "%s: ia64_pal_cache_config_info" 901e088a4adSMatthew Wilcox "(l=%lu, 2) failed (status=%ld)\n", 902d4ed8084SHarvey Harrison __func__, l, status); 9031da177e4SLinus Torvalds max = SMP_CACHE_BYTES; 90408357f82SZoltan Menyhart /* The safest setup for "flush_icache_range()" */ 90508357f82SZoltan Menyhart cci.pcci_stride = I_CACHE_STRIDE_SHIFT; 90662fdd767SFenghua Yu /* The safest setup for "clflush_cache_range()" */ 90762fdd767SFenghua Yu ia64_cache_stride_shift = CACHE_STRIDE_SHIFT; 90808357f82SZoltan Menyhart cci.pcci_unified = 1; 90962fdd767SFenghua Yu } else { 91062fdd767SFenghua Yu if (cci.pcci_stride < ia64_cache_stride_shift) 91162fdd767SFenghua Yu ia64_cache_stride_shift = cci.pcci_stride; 91262fdd767SFenghua Yu 9131da177e4SLinus Torvalds line_size = 1 << cci.pcci_line_size; 9141da177e4SLinus Torvalds if (line_size > max) 9151da177e4SLinus Torvalds max = line_size; 91662fdd767SFenghua Yu } 91762fdd767SFenghua Yu 91808357f82SZoltan Menyhart if (!cci.pcci_unified) { 91962fdd767SFenghua Yu /* cache_type (instruction)=1*/ 92062fdd767SFenghua Yu status = ia64_pal_cache_config_info(l, 1, &cci); 92108357f82SZoltan Menyhart if (status != 0) { 922e088a4adSMatthew Wilcox printk(KERN_ERR "%s: ia64_pal_cache_config_info" 923e088a4adSMatthew Wilcox "(l=%lu, 1) failed (status=%ld)\n", 924d4ed8084SHarvey Harrison __func__, l, status); 925e088a4adSMatthew Wilcox /* The safest setup for flush_icache_range() */ 92608357f82SZoltan Menyhart cci.pcci_stride = I_CACHE_STRIDE_SHIFT; 92708357f82SZoltan Menyhart } 92808357f82SZoltan Menyhart } 92908357f82SZoltan Menyhart if (cci.pcci_stride < ia64_i_cache_stride_shift) 93008357f82SZoltan Menyhart ia64_i_cache_stride_shift = cci.pcci_stride; 9311da177e4SLinus Torvalds } 9321da177e4SLinus Torvalds out: 9331da177e4SLinus Torvalds if (max > ia64_max_cacheline_size) 9341da177e4SLinus Torvalds ia64_max_cacheline_size = max; 9351da177e4SLinus Torvalds } 9361da177e4SLinus Torvalds 9371da177e4SLinus Torvalds /* 9381da177e4SLinus Torvalds * cpu_init() initializes state that is per-CPU. This function acts 9391da177e4SLinus Torvalds * as a 'CPU state barrier', nothing should get across. 9401da177e4SLinus Torvalds */ 941244fd545SChen, Kenneth W void __cpuinit 9421da177e4SLinus Torvalds cpu_init (void) 9431da177e4SLinus Torvalds { 944244fd545SChen, Kenneth W extern void __cpuinit ia64_mmu_init (void *); 945a0776ec8SChen, Kenneth W static unsigned long max_num_phys_stacked = IA64_NUM_PHYS_STACK_REG; 9461da177e4SLinus Torvalds unsigned long num_phys_stacked; 9471da177e4SLinus Torvalds pal_vm_info_2_u_t vmi; 9481da177e4SLinus Torvalds unsigned int max_ctx; 9491da177e4SLinus Torvalds struct cpuinfo_ia64 *cpu_info; 9501da177e4SLinus Torvalds void *cpu_data; 9511da177e4SLinus Torvalds 9521da177e4SLinus Torvalds cpu_data = per_cpu_init(); 9534d1efed5STony Luck #ifdef CONFIG_SMP 954d5a7430dSMike Travis /* 955d5a7430dSMike Travis * insert boot cpu into sibling and core mapes 956d5a7430dSMike Travis * (must be done after per_cpu area is setup) 957d5a7430dSMike Travis */ 958d5a7430dSMike Travis if (smp_processor_id() == 0) { 959d5a7430dSMike Travis cpu_set(0, per_cpu(cpu_sibling_map, 0)); 960d5a7430dSMike Travis cpu_set(0, cpu_core_map[0]); 96110617bbeSTony Luck } else { 9621da177e4SLinus Torvalds /* 96310617bbeSTony Luck * Set ar.k3 so that assembly code in MCA handler can compute 9641da177e4SLinus Torvalds * physical addresses of per cpu variables with a simple: 9651da177e4SLinus Torvalds * phys = ar.k3 + &per_cpu_var 96610617bbeSTony Luck * and the alt-dtlb-miss handler can set per-cpu mapping into 96710617bbeSTony Luck * the TLB when needed. head.S already did this for cpu0. 9681da177e4SLinus Torvalds */ 9691da177e4SLinus Torvalds ia64_set_kr(IA64_KR_PER_CPU_DATA, 9701da177e4SLinus Torvalds ia64_tpa(cpu_data) - (long) __per_cpu_start); 97110617bbeSTony Luck } 97210617bbeSTony Luck #endif 9731da177e4SLinus Torvalds 97462fdd767SFenghua Yu get_cache_info(); 9751da177e4SLinus Torvalds 9761da177e4SLinus Torvalds /* 9771da177e4SLinus Torvalds * We can't pass "local_cpu_data" to identify_cpu() because we haven't called 9781da177e4SLinus Torvalds * ia64_mmu_init() yet. And we can't call ia64_mmu_init() first because it 9791da177e4SLinus Torvalds * depends on the data returned by identify_cpu(). We break the dependency by 9801da177e4SLinus Torvalds * accessing cpu_data() through the canonical per-CPU address. 9811da177e4SLinus Torvalds */ 9821da177e4SLinus Torvalds cpu_info = cpu_data + ((char *) &__ia64_per_cpu_var(cpu_info) - __per_cpu_start); 9831da177e4SLinus Torvalds identify_cpu(cpu_info); 9841da177e4SLinus Torvalds 9851da177e4SLinus Torvalds #ifdef CONFIG_MCKINLEY 9861da177e4SLinus Torvalds { 9871da177e4SLinus Torvalds # define FEATURE_SET 16 9881da177e4SLinus Torvalds struct ia64_pal_retval iprv; 9891da177e4SLinus Torvalds 9901da177e4SLinus Torvalds if (cpu_info->family == 0x1f) { 9911da177e4SLinus Torvalds PAL_CALL_PHYS(iprv, PAL_PROC_GET_FEATURES, 0, FEATURE_SET, 0); 9921da177e4SLinus Torvalds if ((iprv.status == 0) && (iprv.v0 & 0x80) && (iprv.v2 & 0x80)) 9931da177e4SLinus Torvalds PAL_CALL_PHYS(iprv, PAL_PROC_SET_FEATURES, 9941da177e4SLinus Torvalds (iprv.v1 | 0x80), FEATURE_SET, 0); 9951da177e4SLinus Torvalds } 9961da177e4SLinus Torvalds } 9971da177e4SLinus Torvalds #endif 9981da177e4SLinus Torvalds 9991da177e4SLinus Torvalds /* Clear the stack memory reserved for pt_regs: */ 10006450578fSAl Viro memset(task_pt_regs(current), 0, sizeof(struct pt_regs)); 10011da177e4SLinus Torvalds 10021da177e4SLinus Torvalds ia64_set_kr(IA64_KR_FPU_OWNER, 0); 10031da177e4SLinus Torvalds 10041da177e4SLinus Torvalds /* 10051da177e4SLinus Torvalds * Initialize the page-table base register to a global 10061da177e4SLinus Torvalds * directory with all zeroes. This ensure that we can handle 10071da177e4SLinus Torvalds * TLB-misses to user address-space even before we created the 10081da177e4SLinus Torvalds * first user address-space. This may happen, e.g., due to 10091da177e4SLinus Torvalds * aggressive use of lfetch.fault. 10101da177e4SLinus Torvalds */ 10111da177e4SLinus Torvalds ia64_set_kr(IA64_KR_PT_BASE, __pa(ia64_imva(empty_zero_page))); 10121da177e4SLinus Torvalds 10131da177e4SLinus Torvalds /* 101486ebacd3STony Luck * Initialize default control register to defer speculative faults except 101586ebacd3STony Luck * for those arising from TLB misses, which are not deferred. The 10161da177e4SLinus Torvalds * kernel MUST NOT depend on a particular setting of these bits (in other words, 10171da177e4SLinus Torvalds * the kernel must have recovery code for all speculative accesses). Turn on 10181da177e4SLinus Torvalds * dcr.lc as per recommendation by the architecture team. Most IA-32 apps 10191da177e4SLinus Torvalds * shouldn't be affected by this (moral: keep your ia32 locks aligned and you'll 10201da177e4SLinus Torvalds * be fine). 10211da177e4SLinus Torvalds */ 10221da177e4SLinus Torvalds ia64_setreg(_IA64_REG_CR_DCR, ( IA64_DCR_DP | IA64_DCR_DK | IA64_DCR_DX | IA64_DCR_DR 10231da177e4SLinus Torvalds | IA64_DCR_DA | IA64_DCR_DD | IA64_DCR_LC)); 10241da177e4SLinus Torvalds atomic_inc(&init_mm.mm_count); 10251da177e4SLinus Torvalds current->active_mm = &init_mm; 102680a03e29SStoyan Gaydarov BUG_ON(current->mm); 10271da177e4SLinus Torvalds 10281da177e4SLinus Torvalds ia64_mmu_init(ia64_imva(cpu_data)); 10291da177e4SLinus Torvalds ia64_mca_cpu_init(ia64_imva(cpu_data)); 10301da177e4SLinus Torvalds 10311da177e4SLinus Torvalds #ifdef CONFIG_IA32_SUPPORT 10321da177e4SLinus Torvalds ia32_cpu_init(); 10331da177e4SLinus Torvalds #endif 10341da177e4SLinus Torvalds 103572fdbdceSSimon Arlott /* Clear ITC to eliminate sched_clock() overflows in human time. */ 10361da177e4SLinus Torvalds ia64_set_itc(0); 10371da177e4SLinus Torvalds 10381da177e4SLinus Torvalds /* disable all local interrupt sources: */ 10391da177e4SLinus Torvalds ia64_set_itv(1 << 16); 10401da177e4SLinus Torvalds ia64_set_lrr0(1 << 16); 10411da177e4SLinus Torvalds ia64_set_lrr1(1 << 16); 10421da177e4SLinus Torvalds ia64_setreg(_IA64_REG_CR_PMV, 1 << 16); 10431da177e4SLinus Torvalds ia64_setreg(_IA64_REG_CR_CMCV, 1 << 16); 10441da177e4SLinus Torvalds 10451da177e4SLinus Torvalds /* clear TPR & XTP to enable all interrupt classes: */ 10461da177e4SLinus Torvalds ia64_setreg(_IA64_REG_CR_TPR, 0); 1047f740e6c9SKenji Kaneshige 1048f740e6c9SKenji Kaneshige /* Clear any pending interrupts left by SAL/EFI */ 1049f740e6c9SKenji Kaneshige while (ia64_get_ivr() != IA64_SPURIOUS_INT_VECTOR) 1050f740e6c9SKenji Kaneshige ia64_eoi(); 1051f740e6c9SKenji Kaneshige 10521da177e4SLinus Torvalds #ifdef CONFIG_SMP 10531da177e4SLinus Torvalds normal_xtp(); 10541da177e4SLinus Torvalds #endif 10551da177e4SLinus Torvalds 10561da177e4SLinus Torvalds /* set ia64_ctx.max_rid to the maximum RID that is supported by all CPUs: */ 10572046b94eSFenghua Yu if (ia64_pal_vm_summary(NULL, &vmi) == 0) { 10581da177e4SLinus Torvalds max_ctx = (1U << (vmi.pal_vm_info_2_s.rid_size - 3)) - 1; 1059a6c75b86SFenghua Yu setup_ptcg_sem(vmi.pal_vm_info_2_s.max_purges, NPTCG_FROM_PAL); 10602046b94eSFenghua Yu } else { 10611da177e4SLinus Torvalds printk(KERN_WARNING "cpu_init: PAL VM summary failed, assuming 18 RID bits\n"); 10621da177e4SLinus Torvalds max_ctx = (1U << 15) - 1; /* use architected minimum */ 10631da177e4SLinus Torvalds } 10641da177e4SLinus Torvalds while (max_ctx < ia64_ctx.max_ctx) { 10651da177e4SLinus Torvalds unsigned int old = ia64_ctx.max_ctx; 10661da177e4SLinus Torvalds if (cmpxchg(&ia64_ctx.max_ctx, old, max_ctx) == old) 10671da177e4SLinus Torvalds break; 10681da177e4SLinus Torvalds } 10691da177e4SLinus Torvalds 10701da177e4SLinus Torvalds if (ia64_pal_rse_info(&num_phys_stacked, NULL) != 0) { 10711da177e4SLinus Torvalds printk(KERN_WARNING "cpu_init: PAL RSE info failed; assuming 96 physical " 10721da177e4SLinus Torvalds "stacked regs\n"); 10731da177e4SLinus Torvalds num_phys_stacked = 96; 10741da177e4SLinus Torvalds } 10751da177e4SLinus Torvalds /* size of physical stacked register partition plus 8 bytes: */ 1076a0776ec8SChen, Kenneth W if (num_phys_stacked > max_num_phys_stacked) { 1077a0776ec8SChen, Kenneth W ia64_patch_phys_stack_reg(num_phys_stacked*8 + 8); 1078a0776ec8SChen, Kenneth W max_num_phys_stacked = num_phys_stacked; 1079a0776ec8SChen, Kenneth W } 10801da177e4SLinus Torvalds platform_cpu_init(); 10816c4fa560SVenkatesh Pallipadi pm_idle = default_idle; 10821da177e4SLinus Torvalds } 10831da177e4SLinus Torvalds 1084244fd545SChen, Kenneth W void __init 10851da177e4SLinus Torvalds check_bugs (void) 10861da177e4SLinus Torvalds { 10871da177e4SLinus Torvalds ia64_patch_mckinley_e9((unsigned long) __start___mckinley_e9_bundles, 10881da177e4SLinus Torvalds (unsigned long) __end___mckinley_e9_bundles); 10891da177e4SLinus Torvalds } 10903ed3bce8SMatt Domsch 10913ed3bce8SMatt Domsch static int __init run_dmi_scan(void) 10923ed3bce8SMatt Domsch { 10933ed3bce8SMatt Domsch dmi_scan_machine(); 10943ed3bce8SMatt Domsch return 0; 10953ed3bce8SMatt Domsch } 10963ed3bce8SMatt Domsch core_initcall(run_dmi_scan); 1097