1b2441318SGreg Kroah-Hartman // SPDX-License-Identifier: GPL-2.0 21da177e4SLinus Torvalds /* 31da177e4SLinus Torvalds * Architecture-specific setup. 41da177e4SLinus Torvalds * 51da177e4SLinus Torvalds * Copyright (C) 1998-2001, 2003-2004 Hewlett-Packard Co 61da177e4SLinus Torvalds * David Mosberger-Tang <davidm@hpl.hp.com> 71da177e4SLinus Torvalds * Stephane Eranian <eranian@hpl.hp.com> 8e927ecb0SSuresh Siddha * Copyright (C) 2000, 2004 Intel Corp 9e927ecb0SSuresh Siddha * Rohit Seth <rohit.seth@intel.com> 10e927ecb0SSuresh Siddha * Suresh Siddha <suresh.b.siddha@intel.com> 11e927ecb0SSuresh Siddha * Gordon Jin <gordon.jin@intel.com> 121da177e4SLinus Torvalds * Copyright (C) 1999 VA Linux Systems 131da177e4SLinus Torvalds * Copyright (C) 1999 Walt Drummond <drummond@valinux.com> 141da177e4SLinus Torvalds * 15e927ecb0SSuresh Siddha * 12/26/04 S.Siddha, G.Jin, R.Seth 16e927ecb0SSuresh Siddha * Add multi-threading and multi-core detection 171da177e4SLinus Torvalds * 11/12/01 D.Mosberger Convert get_cpuinfo() to seq_file based show_cpuinfo(). 181da177e4SLinus Torvalds * 04/04/00 D.Mosberger renamed cpu_initialized to cpu_online_map 191da177e4SLinus Torvalds * 03/31/00 R.Seth cpu_initialized and current->processor fixes 201da177e4SLinus Torvalds * 02/04/00 D.Mosberger some more get_cpuinfo fixes... 211da177e4SLinus Torvalds * 02/01/00 R.Seth fixed get_cpuinfo for SMP 221da177e4SLinus Torvalds * 01/07/99 S.Eranian added the support for command line argument 231da177e4SLinus Torvalds * 06/24/99 W.Drummond added boot_cpu_data. 2408357f82SZoltan Menyhart * 05/28/05 Z. Menyhart Dynamic stride size for "flush_icache_range()" 251da177e4SLinus Torvalds */ 261da177e4SLinus Torvalds #include <linux/module.h> 271da177e4SLinus Torvalds #include <linux/init.h> 2865fddcfcSMike Rapoport #include <linux/pgtable.h> 291da177e4SLinus Torvalds 301da177e4SLinus Torvalds #include <linux/acpi.h> 311da177e4SLinus Torvalds #include <linux/console.h> 321da177e4SLinus Torvalds #include <linux/delay.h> 331777e463SIngo Molnar #include <linux/cpu.h> 34fa809d70SChristoph Hellwig #include <linux/kdev_t.h> 351da177e4SLinus Torvalds #include <linux/kernel.h> 36f6280099SMike Rapoport #include <linux/memblock.h> 371da177e4SLinus Torvalds #include <linux/reboot.h> 3868e21be2SIngo Molnar #include <linux/sched/mm.h> 39e6017571SIngo Molnar #include <linux/sched/clock.h> 4068db0cf1SIngo Molnar #include <linux/sched/task_stack.h> 411da177e4SLinus Torvalds #include <linux/seq_file.h> 421da177e4SLinus Torvalds #include <linux/string.h> 431da177e4SLinus Torvalds #include <linux/threads.h> 44894673eeSJon Smirl #include <linux/screen_info.h> 453ed3bce8SMatt Domsch #include <linux/dmi.h> 46fa809d70SChristoph Hellwig #include <linux/root_dev.h> 471da177e4SLinus Torvalds #include <linux/serial.h> 481da177e4SLinus Torvalds #include <linux/serial_core.h> 491da177e4SLinus Torvalds #include <linux/efi.h> 501da177e4SLinus Torvalds #include <linux/initrd.h> 516c4fa560SVenkatesh Pallipadi #include <linux/pm.h> 5295235ca2SVenkatesh Pallipadi #include <linux/cpufreq.h> 53a7956113SZou Nan hai #include <linux/kexec.h> 54a7956113SZou Nan hai #include <linux/crash_dump.h> 551da177e4SLinus Torvalds 561da177e4SLinus Torvalds #include <asm/mca.h> 571da177e4SLinus Torvalds #include <asm/meminit.h> 581da177e4SLinus Torvalds #include <asm/page.h> 591da177e4SLinus Torvalds #include <asm/patch.h> 601da177e4SLinus Torvalds #include <asm/processor.h> 611da177e4SLinus Torvalds #include <asm/sal.h> 621da177e4SLinus Torvalds #include <asm/sections.h> 631da177e4SLinus Torvalds #include <asm/setup.h> 641da177e4SLinus Torvalds #include <asm/smp.h> 652046b94eSFenghua Yu #include <asm/tlbflush.h> 661da177e4SLinus Torvalds #include <asm/unistd.h> 67df41017eSChristoph Hellwig #include <asm/uv/uv.h> 68b3545192SPeter Zijlstra #include <asm/xtp.h> 691da177e4SLinus Torvalds 701da177e4SLinus Torvalds #if defined(CONFIG_SMP) && (IA64_CPU_SIZE > PAGE_SIZE) 711da177e4SLinus Torvalds # error "struct cpuinfo_ia64 too big!" 721da177e4SLinus Torvalds #endif 731da177e4SLinus Torvalds 74df41017eSChristoph Hellwig char ia64_platform_name[64]; 75df41017eSChristoph Hellwig 761da177e4SLinus Torvalds #ifdef CONFIG_SMP 771da177e4SLinus Torvalds unsigned long __per_cpu_offset[NR_CPUS]; 781da177e4SLinus Torvalds EXPORT_SYMBOL(__per_cpu_offset); 791da177e4SLinus Torvalds #endif 801da177e4SLinus Torvalds 81877105ccSTejun Heo DEFINE_PER_CPU(struct cpuinfo_ia64, ia64_cpu_info); 82e007c533SAl Viro EXPORT_SYMBOL(ia64_cpu_info); 831da177e4SLinus Torvalds DEFINE_PER_CPU(unsigned long, local_per_cpu_offset); 84e007c533SAl Viro #ifdef CONFIG_SMP 85e007c533SAl Viro EXPORT_SYMBOL(local_per_cpu_offset); 86e007c533SAl Viro #endif 871da177e4SLinus Torvalds unsigned long ia64_cycles_per_usec; 881da177e4SLinus Torvalds struct ia64_boot_param *ia64_boot_param; 891da177e4SLinus Torvalds struct screen_info screen_info; 9066b7f8a3SMark Maule unsigned long vga_console_iobase; 9166b7f8a3SMark Maule unsigned long vga_console_membase; 921da177e4SLinus Torvalds 93be379124SKhalid Aziz static struct resource data_resource = { 94be379124SKhalid Aziz .name = "Kernel data", 9503cb525eSToshi Kani .flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM 96be379124SKhalid Aziz }; 97be379124SKhalid Aziz 98be379124SKhalid Aziz static struct resource code_resource = { 99be379124SKhalid Aziz .name = "Kernel code", 10003cb525eSToshi Kani .flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM 101be379124SKhalid Aziz }; 10200bf4098SBernhard Walle 10300bf4098SBernhard Walle static struct resource bss_resource = { 10400bf4098SBernhard Walle .name = "Kernel bss", 10503cb525eSToshi Kani .flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM 10600bf4098SBernhard Walle }; 107be379124SKhalid Aziz 1081da177e4SLinus Torvalds unsigned long ia64_max_cacheline_size; 109e1531b42SJohn W. Linville 1101da177e4SLinus Torvalds unsigned long ia64_iobase; /* virtual address for I/O accesses */ 1111da177e4SLinus Torvalds EXPORT_SYMBOL(ia64_iobase); 1121da177e4SLinus Torvalds struct io_space io_space[MAX_IO_SPACES]; 1131da177e4SLinus Torvalds EXPORT_SYMBOL(io_space); 1141da177e4SLinus Torvalds unsigned int num_io_spaces; 1151da177e4SLinus Torvalds 1161da177e4SLinus Torvalds /* 11708357f82SZoltan Menyhart * "flush_icache_range()" needs to know what processor dependent stride size to use 11808357f82SZoltan Menyhart * when it makes i-cache(s) coherent with d-caches. 11908357f82SZoltan Menyhart */ 12008357f82SZoltan Menyhart #define I_CACHE_STRIDE_SHIFT 5 /* Safest way to go: 32 bytes by 32 bytes */ 12108357f82SZoltan Menyhart unsigned long ia64_i_cache_stride_shift = ~0; 12262fdd767SFenghua Yu /* 12362fdd767SFenghua Yu * "clflush_cache_range()" needs to know what processor dependent stride size to 12462fdd767SFenghua Yu * use when it flushes cache lines including both d-cache and i-cache. 12562fdd767SFenghua Yu */ 12662fdd767SFenghua Yu /* Safest way to go: 32 bytes by 32 bytes */ 12762fdd767SFenghua Yu #define CACHE_STRIDE_SHIFT 5 12862fdd767SFenghua Yu unsigned long ia64_cache_stride_shift = ~0; 12908357f82SZoltan Menyhart 13008357f82SZoltan Menyhart /* 1311da177e4SLinus Torvalds * We use a special marker for the end of memory and it uses the extra (+1) slot 1321da177e4SLinus Torvalds */ 133dae28066SChen, Kenneth W struct rsvd_region rsvd_region[IA64_MAX_RSVD_REGIONS + 1] __initdata; 1347e4265c8SGeert Uytterhoeven static int num_rsvd_regions __initdata; 1351da177e4SLinus Torvalds 1361da177e4SLinus Torvalds 1371da177e4SLinus Torvalds /* 1381da177e4SLinus Torvalds * Filter incoming memory segments based on the primitive map created from the boot 1391da177e4SLinus Torvalds * parameters. Segments contained in the map are removed from the memory ranges. A 1401da177e4SLinus Torvalds * caller-specified function is called with the memory ranges that remain after filtering. 1411da177e4SLinus Torvalds * This routine does not assume the incoming segments are sorted. 1421da177e4SLinus Torvalds */ 143dae28066SChen, Kenneth W int __init 144e088a4adSMatthew Wilcox filter_rsvd_memory (u64 start, u64 end, void *arg) 1451da177e4SLinus Torvalds { 146e088a4adSMatthew Wilcox u64 range_start, range_end, prev_start; 1471da177e4SLinus Torvalds void (*func)(unsigned long, unsigned long, int); 1481da177e4SLinus Torvalds int i; 1491da177e4SLinus Torvalds 1501da177e4SLinus Torvalds #if IGNORE_PFN0 1511da177e4SLinus Torvalds if (start == PAGE_OFFSET) { 1521da177e4SLinus Torvalds printk(KERN_WARNING "warning: skipping physical page 0\n"); 1531da177e4SLinus Torvalds start += PAGE_SIZE; 1541da177e4SLinus Torvalds if (start >= end) return 0; 1551da177e4SLinus Torvalds } 1561da177e4SLinus Torvalds #endif 1571da177e4SLinus Torvalds /* 1581da177e4SLinus Torvalds * lowest possible address(walker uses virtual) 1591da177e4SLinus Torvalds */ 1601da177e4SLinus Torvalds prev_start = PAGE_OFFSET; 1611da177e4SLinus Torvalds func = arg; 1621da177e4SLinus Torvalds 1631da177e4SLinus Torvalds for (i = 0; i < num_rsvd_regions; ++i) { 1641da177e4SLinus Torvalds range_start = max(start, prev_start); 1651da177e4SLinus Torvalds range_end = min(end, rsvd_region[i].start); 1661da177e4SLinus Torvalds 1671da177e4SLinus Torvalds if (range_start < range_end) 1681da177e4SLinus Torvalds call_pernode_memory(__pa(range_start), range_end - range_start, func); 1691da177e4SLinus Torvalds 1701da177e4SLinus Torvalds /* nothing more available in this segment */ 1711da177e4SLinus Torvalds if (range_end == end) return 0; 1721da177e4SLinus Torvalds 1731da177e4SLinus Torvalds prev_start = rsvd_region[i].end; 1741da177e4SLinus Torvalds } 1751da177e4SLinus Torvalds /* end of memory marker allows full processing inside loop body */ 1761da177e4SLinus Torvalds return 0; 1771da177e4SLinus Torvalds } 1781da177e4SLinus Torvalds 17998075d24SZoltan Menyhart /* 18098075d24SZoltan Menyhart * Similar to "filter_rsvd_memory()", but the reserved memory ranges 18198075d24SZoltan Menyhart * are not filtered out. 18298075d24SZoltan Menyhart */ 18398075d24SZoltan Menyhart int __init 184e088a4adSMatthew Wilcox filter_memory(u64 start, u64 end, void *arg) 18598075d24SZoltan Menyhart { 18698075d24SZoltan Menyhart void (*func)(unsigned long, unsigned long, int); 18798075d24SZoltan Menyhart 18898075d24SZoltan Menyhart #if IGNORE_PFN0 18998075d24SZoltan Menyhart if (start == PAGE_OFFSET) { 19098075d24SZoltan Menyhart printk(KERN_WARNING "warning: skipping physical page 0\n"); 19198075d24SZoltan Menyhart start += PAGE_SIZE; 19298075d24SZoltan Menyhart if (start >= end) 19398075d24SZoltan Menyhart return 0; 19498075d24SZoltan Menyhart } 19598075d24SZoltan Menyhart #endif 19698075d24SZoltan Menyhart func = arg; 19798075d24SZoltan Menyhart if (start < end) 19898075d24SZoltan Menyhart call_pernode_memory(__pa(start), end - start, func); 19998075d24SZoltan Menyhart return 0; 20098075d24SZoltan Menyhart } 20198075d24SZoltan Menyhart 202dae28066SChen, Kenneth W static void __init 2031da177e4SLinus Torvalds sort_regions (struct rsvd_region *rsvd_region, int max) 2041da177e4SLinus Torvalds { 2051da177e4SLinus Torvalds int j; 2061da177e4SLinus Torvalds 2071da177e4SLinus Torvalds /* simple bubble sorting */ 2081da177e4SLinus Torvalds while (max--) { 2091da177e4SLinus Torvalds for (j = 0; j < max; ++j) { 2101da177e4SLinus Torvalds if (rsvd_region[j].start > rsvd_region[j+1].start) { 211*6c4420b0SYang Guang swap(rsvd_region[j], rsvd_region[j + 1]); 2121da177e4SLinus Torvalds } 2131da177e4SLinus Torvalds } 2141da177e4SLinus Torvalds } 2151da177e4SLinus Torvalds } 2161da177e4SLinus Torvalds 21776d71ebdSPetr Tesarik /* merge overlaps */ 21876d71ebdSPetr Tesarik static int __init 21976d71ebdSPetr Tesarik merge_regions (struct rsvd_region *rsvd_region, int max) 22076d71ebdSPetr Tesarik { 22176d71ebdSPetr Tesarik int i; 22276d71ebdSPetr Tesarik for (i = 1; i < max; ++i) { 22376d71ebdSPetr Tesarik if (rsvd_region[i].start >= rsvd_region[i-1].end) 22476d71ebdSPetr Tesarik continue; 22576d71ebdSPetr Tesarik if (rsvd_region[i].end > rsvd_region[i-1].end) 22676d71ebdSPetr Tesarik rsvd_region[i-1].end = rsvd_region[i].end; 22776d71ebdSPetr Tesarik --max; 22876d71ebdSPetr Tesarik memmove(&rsvd_region[i], &rsvd_region[i+1], 22976d71ebdSPetr Tesarik (max - i) * sizeof(struct rsvd_region)); 23076d71ebdSPetr Tesarik } 23176d71ebdSPetr Tesarik return max; 23276d71ebdSPetr Tesarik } 23376d71ebdSPetr Tesarik 234be379124SKhalid Aziz /* 235be379124SKhalid Aziz * Request address space for all standard resources 236be379124SKhalid Aziz */ 237be379124SKhalid Aziz static int __init register_memory(void) 238be379124SKhalid Aziz { 239be379124SKhalid Aziz code_resource.start = ia64_tpa(_text); 240be379124SKhalid Aziz code_resource.end = ia64_tpa(_etext) - 1; 241be379124SKhalid Aziz data_resource.start = ia64_tpa(_etext); 24200bf4098SBernhard Walle data_resource.end = ia64_tpa(_edata) - 1; 243b898a424SBernhard Walle bss_resource.start = ia64_tpa(__bss_start); 24400bf4098SBernhard Walle bss_resource.end = ia64_tpa(_end) - 1; 24500bf4098SBernhard Walle efi_initialize_iomem_resources(&code_resource, &data_resource, 24600bf4098SBernhard Walle &bss_resource); 247be379124SKhalid Aziz 248be379124SKhalid Aziz return 0; 249be379124SKhalid Aziz } 250be379124SKhalid Aziz 251be379124SKhalid Aziz __initcall(register_memory); 252be379124SKhalid Aziz 253cb380853SBernhard Walle 254cb380853SBernhard Walle #ifdef CONFIG_KEXEC 2558a3360f0SBernhard Walle 2568a3360f0SBernhard Walle /* 2578a3360f0SBernhard Walle * This function checks if the reserved crashkernel is allowed on the specific 2588a3360f0SBernhard Walle * IA64 machine flavour. Machines without an IO TLB use swiotlb and require 2598a3360f0SBernhard Walle * some memory below 4 GB (i.e. in 32 bit area), see the implementation of 260392e879aSAndy Shevchenko * kernel/dma/swiotlb.c. The hpzx1 architecture has an IO TLB but cannot use that 2618a3360f0SBernhard Walle * in kdump case. See the comment in sba_init() in sba_iommu.c. 2628a3360f0SBernhard Walle * 2638a3360f0SBernhard Walle * So, the only machvec that really supports loading the kdump kernel 264cf07cb1fSChristoph Hellwig * over 4 GB is "uv". 2658a3360f0SBernhard Walle */ 2668a3360f0SBernhard Walle static int __init check_crashkernel_memory(unsigned long pbase, size_t size) 2678a3360f0SBernhard Walle { 268df41017eSChristoph Hellwig if (is_uv_system()) 2698a3360f0SBernhard Walle return 1; 2708a3360f0SBernhard Walle else 2718a3360f0SBernhard Walle return pbase < (1UL << 32); 2728a3360f0SBernhard Walle } 2738a3360f0SBernhard Walle 274cb380853SBernhard Walle static void __init setup_crashkernel(unsigned long total, int *n) 275cb380853SBernhard Walle { 276cb380853SBernhard Walle unsigned long long base = 0, size = 0; 277cb380853SBernhard Walle int ret; 278cb380853SBernhard Walle 279cb380853SBernhard Walle ret = parse_crashkernel(boot_command_line, total, 280cb380853SBernhard Walle &size, &base); 281cb380853SBernhard Walle if (ret == 0 && size > 0) { 282cb380853SBernhard Walle if (!base) { 283cb380853SBernhard Walle sort_regions(rsvd_region, *n); 28476d71ebdSPetr Tesarik *n = merge_regions(rsvd_region, *n); 285cb380853SBernhard Walle base = kdump_find_rsvd_region(size, 286cb380853SBernhard Walle rsvd_region, *n); 287cb380853SBernhard Walle } 2888a3360f0SBernhard Walle 2898a3360f0SBernhard Walle if (!check_crashkernel_memory(base, size)) { 29094348b81SKefeng Wang pr_warn("crashkernel: There would be kdump memory " 2918a3360f0SBernhard Walle "at %ld GB but this is unusable because it " 2928a3360f0SBernhard Walle "must\nbe below 4 GB. Change the memory " 2938a3360f0SBernhard Walle "configuration of the machine.\n", 2948a3360f0SBernhard Walle (unsigned long)(base >> 30)); 2958a3360f0SBernhard Walle return; 2968a3360f0SBernhard Walle } 2978a3360f0SBernhard Walle 298cb380853SBernhard Walle if (base != ~0UL) { 299cb380853SBernhard Walle printk(KERN_INFO "Reserving %ldMB of memory at %ldMB " 300cb380853SBernhard Walle "for crashkernel (System RAM: %ldMB)\n", 301cb380853SBernhard Walle (unsigned long)(size >> 20), 302cb380853SBernhard Walle (unsigned long)(base >> 20), 303cb380853SBernhard Walle (unsigned long)(total >> 20)); 304cb380853SBernhard Walle rsvd_region[*n].start = 305cb380853SBernhard Walle (unsigned long)__va(base); 306cb380853SBernhard Walle rsvd_region[*n].end = 307cb380853SBernhard Walle (unsigned long)__va(base + size); 308cb380853SBernhard Walle (*n)++; 309cb380853SBernhard Walle crashk_res.start = base; 310cb380853SBernhard Walle crashk_res.end = base + size - 1; 311cb380853SBernhard Walle } 312cb380853SBernhard Walle } 313cb380853SBernhard Walle efi_memmap_res.start = ia64_boot_param->efi_memmap; 314cb380853SBernhard Walle efi_memmap_res.end = efi_memmap_res.start + 315cb380853SBernhard Walle ia64_boot_param->efi_memmap_size; 316cb380853SBernhard Walle boot_param_res.start = __pa(ia64_boot_param); 317cb380853SBernhard Walle boot_param_res.end = boot_param_res.start + 318cb380853SBernhard Walle sizeof(*ia64_boot_param); 319cb380853SBernhard Walle } 320cb380853SBernhard Walle #else 321cb380853SBernhard Walle static inline void __init setup_crashkernel(unsigned long total, int *n) 322cb380853SBernhard Walle {} 323cb380853SBernhard Walle #endif 324cb380853SBernhard Walle 32570b2e991SGeert Uytterhoeven #ifdef CONFIG_CRASH_DUMP 32670b2e991SGeert Uytterhoeven static int __init reserve_elfcorehdr(u64 *start, u64 *end) 32770b2e991SGeert Uytterhoeven { 32870b2e991SGeert Uytterhoeven u64 length; 32970b2e991SGeert Uytterhoeven 33070b2e991SGeert Uytterhoeven /* We get the address using the kernel command line, 33170b2e991SGeert Uytterhoeven * but the size is extracted from the EFI tables. 33270b2e991SGeert Uytterhoeven * Both address and size are required for reservation 33370b2e991SGeert Uytterhoeven * to work properly. 33470b2e991SGeert Uytterhoeven */ 33570b2e991SGeert Uytterhoeven 33670b2e991SGeert Uytterhoeven if (!is_vmcore_usable()) 33770b2e991SGeert Uytterhoeven return -EINVAL; 33870b2e991SGeert Uytterhoeven 33970b2e991SGeert Uytterhoeven if ((length = vmcore_find_descriptor_size(elfcorehdr_addr)) == 0) { 34070b2e991SGeert Uytterhoeven vmcore_unusable(); 34170b2e991SGeert Uytterhoeven return -EINVAL; 34270b2e991SGeert Uytterhoeven } 34370b2e991SGeert Uytterhoeven 34470b2e991SGeert Uytterhoeven *start = (unsigned long)__va(elfcorehdr_addr); 34570b2e991SGeert Uytterhoeven *end = *start + length; 34670b2e991SGeert Uytterhoeven return 0; 34770b2e991SGeert Uytterhoeven } 34870b2e991SGeert Uytterhoeven #endif /* CONFIG_CRASH_DUMP */ 34970b2e991SGeert Uytterhoeven 3501da177e4SLinus Torvalds /** 3511da177e4SLinus Torvalds * reserve_memory - setup reserved memory areas 3521da177e4SLinus Torvalds * 3531da177e4SLinus Torvalds * Setup the reserved memory areas set aside for the boot parameters, 3541da177e4SLinus Torvalds * initrd, etc. There are currently %IA64_MAX_RSVD_REGIONS defined, 3557f30491cSTony Luck * see arch/ia64/include/asm/meminit.h if you need to define more. 3561da177e4SLinus Torvalds */ 357dae28066SChen, Kenneth W void __init 3581da177e4SLinus Torvalds reserve_memory (void) 3591da177e4SLinus Torvalds { 3601da177e4SLinus Torvalds int n = 0; 361cb380853SBernhard Walle unsigned long total_memory; 3621da177e4SLinus Torvalds 3631da177e4SLinus Torvalds /* 3641da177e4SLinus Torvalds * none of the entries in this table overlap 3651da177e4SLinus Torvalds */ 3661da177e4SLinus Torvalds rsvd_region[n].start = (unsigned long) ia64_boot_param; 3671da177e4SLinus Torvalds rsvd_region[n].end = rsvd_region[n].start + sizeof(*ia64_boot_param); 3681da177e4SLinus Torvalds n++; 3691da177e4SLinus Torvalds 3701da177e4SLinus Torvalds rsvd_region[n].start = (unsigned long) __va(ia64_boot_param->efi_memmap); 3711da177e4SLinus Torvalds rsvd_region[n].end = rsvd_region[n].start + ia64_boot_param->efi_memmap_size; 3721da177e4SLinus Torvalds n++; 3731da177e4SLinus Torvalds 3741da177e4SLinus Torvalds rsvd_region[n].start = (unsigned long) __va(ia64_boot_param->command_line); 3751da177e4SLinus Torvalds rsvd_region[n].end = (rsvd_region[n].start 3761da177e4SLinus Torvalds + strlen(__va(ia64_boot_param->command_line)) + 1); 3771da177e4SLinus Torvalds n++; 3781da177e4SLinus Torvalds 3791da177e4SLinus Torvalds rsvd_region[n].start = (unsigned long) ia64_imva((void *)KERNEL_START); 3801da177e4SLinus Torvalds rsvd_region[n].end = (unsigned long) ia64_imva(_end); 3811da177e4SLinus Torvalds n++; 3821da177e4SLinus Torvalds 3831da177e4SLinus Torvalds #ifdef CONFIG_BLK_DEV_INITRD 3841da177e4SLinus Torvalds if (ia64_boot_param->initrd_start) { 3851da177e4SLinus Torvalds rsvd_region[n].start = (unsigned long)__va(ia64_boot_param->initrd_start); 3861da177e4SLinus Torvalds rsvd_region[n].end = rsvd_region[n].start + ia64_boot_param->initrd_size; 3871da177e4SLinus Torvalds n++; 3881da177e4SLinus Torvalds } 3891da177e4SLinus Torvalds #endif 3901da177e4SLinus Torvalds 39117c1f07eSJay Lan #ifdef CONFIG_CRASH_DUMP 392cee87af2SMagnus Damm if (reserve_elfcorehdr(&rsvd_region[n].start, 393cee87af2SMagnus Damm &rsvd_region[n].end) == 0) 394cee87af2SMagnus Damm n++; 395cee87af2SMagnus Damm #endif 396cee87af2SMagnus Damm 397cb380853SBernhard Walle total_memory = efi_memmap_init(&rsvd_region[n].start, &rsvd_region[n].end); 398d8c97d5fSTony Luck n++; 399d8c97d5fSTony Luck 400cb380853SBernhard Walle setup_crashkernel(total_memory, &n); 401cb380853SBernhard Walle 4021da177e4SLinus Torvalds /* end of memory marker */ 4031da177e4SLinus Torvalds rsvd_region[n].start = ~0UL; 4041da177e4SLinus Torvalds rsvd_region[n].end = ~0UL; 4051da177e4SLinus Torvalds n++; 4061da177e4SLinus Torvalds 4071da177e4SLinus Torvalds num_rsvd_regions = n; 4085eb1d63fSAlex Williamson BUG_ON(IA64_MAX_RSVD_REGIONS + 1 < n); 4091da177e4SLinus Torvalds 4101da177e4SLinus Torvalds sort_regions(rsvd_region, num_rsvd_regions); 41176d71ebdSPetr Tesarik num_rsvd_regions = merge_regions(rsvd_region, num_rsvd_regions); 4121da177e4SLinus Torvalds 413f6280099SMike Rapoport /* reserve all regions except the end of memory marker with memblock */ 414f6280099SMike Rapoport for (n = 0; n < num_rsvd_regions - 1; n++) { 415f6280099SMike Rapoport struct rsvd_region *region = &rsvd_region[n]; 416f6280099SMike Rapoport phys_addr_t addr = __pa(region->start); 417f6280099SMike Rapoport phys_addr_t size = region->end - region->start; 418f6280099SMike Rapoport 419f6280099SMike Rapoport memblock_reserve(addr, size); 420f6280099SMike Rapoport } 421f6280099SMike Rapoport } 422a7956113SZou Nan hai 4231da177e4SLinus Torvalds /** 4241da177e4SLinus Torvalds * find_initrd - get initrd parameters from the boot parameter structure 4251da177e4SLinus Torvalds * 4261da177e4SLinus Torvalds * Grab the initrd start and end from the boot parameter struct given us by 4271da177e4SLinus Torvalds * the boot loader. 4281da177e4SLinus Torvalds */ 429dae28066SChen, Kenneth W void __init 4301da177e4SLinus Torvalds find_initrd (void) 4311da177e4SLinus Torvalds { 4321da177e4SLinus Torvalds #ifdef CONFIG_BLK_DEV_INITRD 4331da177e4SLinus Torvalds if (ia64_boot_param->initrd_start) { 4341da177e4SLinus Torvalds initrd_start = (unsigned long)__va(ia64_boot_param->initrd_start); 4351da177e4SLinus Torvalds initrd_end = initrd_start+ia64_boot_param->initrd_size; 4361da177e4SLinus Torvalds 437e088a4adSMatthew Wilcox printk(KERN_INFO "Initial ramdisk at: 0x%lx (%llu bytes)\n", 4381da177e4SLinus Torvalds initrd_start, ia64_boot_param->initrd_size); 4391da177e4SLinus Torvalds } 4401da177e4SLinus Torvalds #endif 4411da177e4SLinus Torvalds } 4421da177e4SLinus Torvalds 4431da177e4SLinus Torvalds static void __init 4441da177e4SLinus Torvalds io_port_init (void) 4451da177e4SLinus Torvalds { 4461da177e4SLinus Torvalds unsigned long phys_iobase; 4471da177e4SLinus Torvalds 4481da177e4SLinus Torvalds /* 44944c45120SBjorn Helgaas * Set `iobase' based on the EFI memory map or, failing that, the 45044c45120SBjorn Helgaas * value firmware left in ar.k0. 4511da177e4SLinus Torvalds * 45244c45120SBjorn Helgaas * Note that in ia32 mode, IN/OUT instructions use ar.k0 to compute 45344c45120SBjorn Helgaas * the port's virtual address, so ia32_load_state() loads it with a 45444c45120SBjorn Helgaas * user virtual address. But in ia64 mode, glibc uses the 45544c45120SBjorn Helgaas * *physical* address in ar.k0 to mmap the appropriate area from 45644c45120SBjorn Helgaas * /dev/mem, and the inX()/outX() interfaces use MMIO. In both 45744c45120SBjorn Helgaas * cases, user-mode can only use the legacy 0-64K I/O port space. 45844c45120SBjorn Helgaas * 45944c45120SBjorn Helgaas * ar.k0 is not involved in kernel I/O port accesses, which can use 46044c45120SBjorn Helgaas * any of the I/O port spaces and are done via MMIO using the 46144c45120SBjorn Helgaas * virtual mmio_base from the appropriate io_space[]. 4621da177e4SLinus Torvalds */ 4631da177e4SLinus Torvalds phys_iobase = efi_get_iobase(); 46444c45120SBjorn Helgaas if (!phys_iobase) { 4651da177e4SLinus Torvalds phys_iobase = ia64_get_kr(IA64_KR_IO_BASE); 46644c45120SBjorn Helgaas printk(KERN_INFO "No I/O port range found in EFI memory map, " 46744c45120SBjorn Helgaas "falling back to AR.KR0 (0x%lx)\n", phys_iobase); 4681da177e4SLinus Torvalds } 4691da177e4SLinus Torvalds ia64_iobase = (unsigned long) ioremap(phys_iobase, 0); 47044c45120SBjorn Helgaas ia64_set_kr(IA64_KR_IO_BASE, __pa(ia64_iobase)); 4711da177e4SLinus Torvalds 4721da177e4SLinus Torvalds /* setup legacy IO port space */ 4731da177e4SLinus Torvalds io_space[0].mmio_base = ia64_iobase; 4741da177e4SLinus Torvalds io_space[0].sparse = 1; 4751da177e4SLinus Torvalds num_io_spaces = 1; 4761da177e4SLinus Torvalds } 4771da177e4SLinus Torvalds 4781da177e4SLinus Torvalds /** 4791da177e4SLinus Torvalds * early_console_setup - setup debugging console 4801da177e4SLinus Torvalds * 4811da177e4SLinus Torvalds * Consoles started here require little enough setup that we can start using 4821da177e4SLinus Torvalds * them very early in the boot process, either right after the machine 4831da177e4SLinus Torvalds * vector initialization, or even before if the drivers can detect their hw. 4841da177e4SLinus Torvalds * 4851da177e4SLinus Torvalds * Returns non-zero if a console couldn't be setup. 4861da177e4SLinus Torvalds */ 4871da177e4SLinus Torvalds static inline int __init 4881da177e4SLinus Torvalds early_console_setup (char *cmdline) 4891da177e4SLinus Torvalds { 4901da177e4SLinus Torvalds #ifdef CONFIG_EFI_PCDP 4911da177e4SLinus Torvalds if (!efi_setup_pcdp_console(cmdline)) 492fc5bad03SChristoph Hellwig return 0; 4931da177e4SLinus Torvalds #endif 494fc5bad03SChristoph Hellwig return -1; 4951da177e4SLinus Torvalds } 4961da177e4SLinus Torvalds 497a8384e6cSChristoph Hellwig static void __init 498a8384e6cSChristoph Hellwig screen_info_setup(void) 499a8384e6cSChristoph Hellwig { 500a8384e6cSChristoph Hellwig unsigned int orig_x, orig_y, num_cols, num_rows, font_height; 501a8384e6cSChristoph Hellwig 502a8384e6cSChristoph Hellwig memset(&screen_info, 0, sizeof(screen_info)); 503a8384e6cSChristoph Hellwig 504a8384e6cSChristoph Hellwig if (!ia64_boot_param->console_info.num_rows || 505a8384e6cSChristoph Hellwig !ia64_boot_param->console_info.num_cols) { 506a8384e6cSChristoph Hellwig printk(KERN_WARNING "invalid screen-info, guessing 80x25\n"); 507a8384e6cSChristoph Hellwig orig_x = 0; 508a8384e6cSChristoph Hellwig orig_y = 0; 509a8384e6cSChristoph Hellwig num_cols = 80; 510a8384e6cSChristoph Hellwig num_rows = 25; 511a8384e6cSChristoph Hellwig font_height = 16; 512a8384e6cSChristoph Hellwig } else { 513a8384e6cSChristoph Hellwig orig_x = ia64_boot_param->console_info.orig_x; 514a8384e6cSChristoph Hellwig orig_y = ia64_boot_param->console_info.orig_y; 515a8384e6cSChristoph Hellwig num_cols = ia64_boot_param->console_info.num_cols; 516a8384e6cSChristoph Hellwig num_rows = ia64_boot_param->console_info.num_rows; 517a8384e6cSChristoph Hellwig font_height = 400 / num_rows; 518a8384e6cSChristoph Hellwig } 519a8384e6cSChristoph Hellwig 520a8384e6cSChristoph Hellwig screen_info.orig_x = orig_x; 521a8384e6cSChristoph Hellwig screen_info.orig_y = orig_y; 522a8384e6cSChristoph Hellwig screen_info.orig_video_cols = num_cols; 523a8384e6cSChristoph Hellwig screen_info.orig_video_lines = num_rows; 524a8384e6cSChristoph Hellwig screen_info.orig_video_points = font_height; 525a8384e6cSChristoph Hellwig screen_info.orig_video_mode = 3; /* XXX fake */ 526a8384e6cSChristoph Hellwig screen_info.orig_video_isVGA = 1; /* XXX fake */ 527a8384e6cSChristoph Hellwig screen_info.orig_video_ega_bx = 3; /* XXX fake */ 528a8384e6cSChristoph Hellwig } 529a8384e6cSChristoph Hellwig 5301da177e4SLinus Torvalds static inline void 5311da177e4SLinus Torvalds mark_bsp_online (void) 5321da177e4SLinus Torvalds { 5331da177e4SLinus Torvalds #ifdef CONFIG_SMP 5341da177e4SLinus Torvalds /* If we register an early console, allow CPU 0 to printk */ 5357d7f9848SSrivatsa S. Bhat set_cpu_online(smp_processor_id(), true); 5361da177e4SLinus Torvalds #endif 5371da177e4SLinus Torvalds } 5381da177e4SLinus Torvalds 539a5b00bb4SHorms static __initdata int nomca; 540a5b00bb4SHorms static __init int setup_nomca(char *s) 541a5b00bb4SHorms { 542a5b00bb4SHorms nomca = 1; 543a5b00bb4SHorms return 0; 544a5b00bb4SHorms } 545a5b00bb4SHorms early_param("nomca", setup_nomca); 546a5b00bb4SHorms 5471da177e4SLinus Torvalds void __init 5481da177e4SLinus Torvalds setup_arch (char **cmdline_p) 5491da177e4SLinus Torvalds { 5501da177e4SLinus Torvalds unw_init(); 5511da177e4SLinus Torvalds 5521da177e4SLinus Torvalds ia64_patch_vtop((u64) __start___vtop_patchlist, (u64) __end___vtop_patchlist); 5531da177e4SLinus Torvalds 5541da177e4SLinus Torvalds *cmdline_p = __va(ia64_boot_param->command_line); 555a8d91b84SAlon Bar-Lev strlcpy(boot_command_line, *cmdline_p, COMMAND_LINE_SIZE); 5561da177e4SLinus Torvalds 5571da177e4SLinus Torvalds efi_init(); 5581da177e4SLinus Torvalds io_port_init(); 5591da177e4SLinus Torvalds 560df41017eSChristoph Hellwig uv_probe_system_type(); 561a07ee862SHorms parse_early_param(); 562a07ee862SHorms 5631da177e4SLinus Torvalds if (early_console_setup(*cmdline_p) == 0) 5641da177e4SLinus Torvalds mark_bsp_online(); 5651da177e4SLinus Torvalds 5661da177e4SLinus Torvalds /* Initialize the ACPI boot-time table parser */ 5671da177e4SLinus Torvalds acpi_table_init(); 56862ee0540SDoug Chapman early_acpi_boot_init(); 5691da177e4SLinus Torvalds #ifdef CONFIG_ACPI_NUMA 5701da177e4SLinus Torvalds acpi_numa_init(); 571312521d0SRobert Richter acpi_numa_fixup(); 57262ee0540SDoug Chapman #ifdef CONFIG_ACPI_HOTPLUG_CPU 57362ee0540SDoug Chapman prefill_possible_map(); 57462ee0540SDoug Chapman #endif 5755d2068daSRusty Russell per_cpu_scan_finalize((cpumask_weight(&early_cpu_possible_map) == 0 ? 5765d2068daSRusty Russell 32 : cpumask_weight(&early_cpu_possible_map)), 577dd4f0888STony Luck additional_cpus > 0 ? additional_cpus : 0); 5782e0f2b16SChristoph Hellwig #endif /* CONFIG_ACPI_NUMA */ 5791da177e4SLinus Torvalds 58012cda817STejun Heo #ifdef CONFIG_SMP 58112cda817STejun Heo smp_build_cpu_map(); 58212cda817STejun Heo #endif 5831da177e4SLinus Torvalds find_memory(); 5841da177e4SLinus Torvalds 5851da177e4SLinus Torvalds /* process SAL system table: */ 5865828efb9SArd Biesheuvel ia64_sal_init(__va(sal_systab_phys)); 5871da177e4SLinus Torvalds 5884dcc29e1STony Luck #ifdef CONFIG_ITANIUM 5894dcc29e1STony Luck ia64_patch_rse((u64) __start___rse_patchlist, (u64) __end___rse_patchlist); 5904dcc29e1STony Luck #else 5914dcc29e1STony Luck { 592e088a4adSMatthew Wilcox unsigned long num_phys_stacked; 5934dcc29e1STony Luck 5944dcc29e1STony Luck if (ia64_pal_rse_info(&num_phys_stacked, 0) == 0 && num_phys_stacked > 96) 5954dcc29e1STony Luck ia64_patch_rse((u64) __start___rse_patchlist, (u64) __end___rse_patchlist); 5964dcc29e1STony Luck } 5974dcc29e1STony Luck #endif 5984dcc29e1STony Luck 5991da177e4SLinus Torvalds #ifdef CONFIG_SMP 6001da177e4SLinus Torvalds cpu_physical_id(0) = hard_smp_processor_id(); 6011da177e4SLinus Torvalds #endif 6021da177e4SLinus Torvalds 6031da177e4SLinus Torvalds cpu_init(); /* initialize the bootstrap CPU */ 604dcc17d1bSPeter Keilty mmu_context_init(); /* initialize context_id bitmap */ 6051da177e4SLinus Torvalds 6061da177e4SLinus Torvalds #ifdef CONFIG_VT 6071da177e4SLinus Torvalds if (!conswitchp) { 6081da177e4SLinus Torvalds # if defined(CONFIG_VGA_CONSOLE) 6091da177e4SLinus Torvalds /* 6101da177e4SLinus Torvalds * Non-legacy systems may route legacy VGA MMIO range to system 6111da177e4SLinus Torvalds * memory. vga_con probes the MMIO hole, so memory looks like 6121da177e4SLinus Torvalds * a VGA device to it. The EFI memory map can tell us if it's 6131da177e4SLinus Torvalds * memory so we can avoid this problem. 6141da177e4SLinus Torvalds */ 6151da177e4SLinus Torvalds if (efi_mem_type(0xA0000) != EFI_CONVENTIONAL_MEMORY) 6161da177e4SLinus Torvalds conswitchp = &vga_con; 6171da177e4SLinus Torvalds # endif 6181da177e4SLinus Torvalds } 6191da177e4SLinus Torvalds #endif 6201da177e4SLinus Torvalds 6211da177e4SLinus Torvalds /* enable IA-64 Machine Check Abort Handling unless disabled */ 622a5b00bb4SHorms if (!nomca) 6231da177e4SLinus Torvalds ia64_mca_init(); 6241da177e4SLinus Torvalds 625fa809d70SChristoph Hellwig /* 626fa809d70SChristoph Hellwig * Default to /dev/sda2. This assumes that the EFI partition 627fa809d70SChristoph Hellwig * is physical disk 1 partition 1 and the Linux root disk is 628fa809d70SChristoph Hellwig * physical disk 1 partition 2. 629fa809d70SChristoph Hellwig */ 630fa809d70SChristoph Hellwig ROOT_DEV = Root_SDA2; /* default to second partition on first drive */ 631fa809d70SChristoph Hellwig 632df41017eSChristoph Hellwig if (is_uv_system()) 633df41017eSChristoph Hellwig uv_setup(cmdline_p); 634df41017eSChristoph Hellwig #ifdef CONFIG_SMP 635df41017eSChristoph Hellwig else 636df41017eSChristoph Hellwig init_smp_config(); 637df41017eSChristoph Hellwig #endif 638df41017eSChristoph Hellwig 639a8384e6cSChristoph Hellwig screen_info_setup(); 6401da177e4SLinus Torvalds paging_init(); 641acb04058SPeter Zijlstra 642acb04058SPeter Zijlstra clear_sched_clock_stable(); 6431da177e4SLinus Torvalds } 6441da177e4SLinus Torvalds 6451da177e4SLinus Torvalds /* 64672fdbdceSSimon Arlott * Display cpu info for all CPUs. 6471da177e4SLinus Torvalds */ 6481da177e4SLinus Torvalds static int 6491da177e4SLinus Torvalds show_cpuinfo (struct seq_file *m, void *v) 6501da177e4SLinus Torvalds { 6511da177e4SLinus Torvalds #ifdef CONFIG_SMP 6521da177e4SLinus Torvalds # define lpj c->loops_per_jiffy 6531da177e4SLinus Torvalds # define cpunum c->cpu 6541da177e4SLinus Torvalds #else 6551da177e4SLinus Torvalds # define lpj loops_per_jiffy 6561da177e4SLinus Torvalds # define cpunum 0 6571da177e4SLinus Torvalds #endif 6581da177e4SLinus Torvalds static struct { 6591da177e4SLinus Torvalds unsigned long mask; 6601da177e4SLinus Torvalds const char *feature_name; 6611da177e4SLinus Torvalds } feature_bits[] = { 6621da177e4SLinus Torvalds { 1UL << 0, "branchlong" }, 6631da177e4SLinus Torvalds { 1UL << 1, "spontaneous deferral"}, 6641da177e4SLinus Torvalds { 1UL << 2, "16-byte atomic ops" } 6651da177e4SLinus Torvalds }; 666ae0af3e3SAron Griffis char features[128], *cp, *sep; 6671da177e4SLinus Torvalds struct cpuinfo_ia64 *c = v; 6681da177e4SLinus Torvalds unsigned long mask; 66938c0b2c2STony Luck unsigned long proc_freq; 670ae0af3e3SAron Griffis int i, size; 6711da177e4SLinus Torvalds 6721da177e4SLinus Torvalds mask = c->features; 6731da177e4SLinus Torvalds 6741da177e4SLinus Torvalds /* build the feature string: */ 675ae0af3e3SAron Griffis memcpy(features, "standard", 9); 6761da177e4SLinus Torvalds cp = features; 677ae0af3e3SAron Griffis size = sizeof(features); 678ae0af3e3SAron Griffis sep = ""; 679ae0af3e3SAron Griffis for (i = 0; i < ARRAY_SIZE(feature_bits) && size > 1; ++i) { 6801da177e4SLinus Torvalds if (mask & feature_bits[i].mask) { 681ae0af3e3SAron Griffis cp += snprintf(cp, size, "%s%s", sep, 682ae0af3e3SAron Griffis feature_bits[i].feature_name), 683ae0af3e3SAron Griffis sep = ", "; 6841da177e4SLinus Torvalds mask &= ~feature_bits[i].mask; 685ae0af3e3SAron Griffis size = sizeof(features) - (cp - features); 6861da177e4SLinus Torvalds } 6871da177e4SLinus Torvalds } 688ae0af3e3SAron Griffis if (mask && size > 1) { 689ae0af3e3SAron Griffis /* print unknown features as a hex value */ 690ae0af3e3SAron Griffis snprintf(cp, size, "%s0x%lx", sep, mask); 6911da177e4SLinus Torvalds } 6921da177e4SLinus Torvalds 69395235ca2SVenkatesh Pallipadi proc_freq = cpufreq_quick_get(cpunum); 69495235ca2SVenkatesh Pallipadi if (!proc_freq) 69595235ca2SVenkatesh Pallipadi proc_freq = c->proc_freq / 1000; 69695235ca2SVenkatesh Pallipadi 6971da177e4SLinus Torvalds seq_printf(m, 6981da177e4SLinus Torvalds "processor : %d\n" 6991da177e4SLinus Torvalds "vendor : %s\n" 7001da177e4SLinus Torvalds "arch : IA-64\n" 70176d08bb3STony Luck "family : %u\n" 7021da177e4SLinus Torvalds "model : %u\n" 70376d08bb3STony Luck "model name : %s\n" 7041da177e4SLinus Torvalds "revision : %u\n" 7051da177e4SLinus Torvalds "archrev : %u\n" 706ae0af3e3SAron Griffis "features : %s\n" 7071da177e4SLinus Torvalds "cpu number : %lu\n" 7081da177e4SLinus Torvalds "cpu regs : %u\n" 7098a3a78d1SVenki Pallipadi "cpu MHz : %lu.%03lu\n" 7101da177e4SLinus Torvalds "itc MHz : %lu.%06lu\n" 711e927ecb0SSuresh Siddha "BogoMIPS : %lu.%02lu\n", 71276d08bb3STony Luck cpunum, c->vendor, c->family, c->model, 71376d08bb3STony Luck c->model_name, c->revision, c->archrev, 7141da177e4SLinus Torvalds features, c->ppn, c->number, 71595235ca2SVenkatesh Pallipadi proc_freq / 1000, proc_freq % 1000, 7161da177e4SLinus Torvalds c->itc_freq / 1000000, c->itc_freq % 1000000, 7171da177e4SLinus Torvalds lpj*HZ/500000, (lpj*HZ/5000) % 100); 718e927ecb0SSuresh Siddha #ifdef CONFIG_SMP 7195d2068daSRusty Russell seq_printf(m, "siblings : %u\n", 7205d2068daSRusty Russell cpumask_weight(&cpu_core_map[cpunum])); 721113134fcSAlex Chiang if (c->socket_id != -1) 722113134fcSAlex Chiang seq_printf(m, "physical id: %u\n", c->socket_id); 723e927ecb0SSuresh Siddha if (c->threads_per_core > 1 || c->cores_per_socket > 1) 724e927ecb0SSuresh Siddha seq_printf(m, 725e927ecb0SSuresh Siddha "core id : %u\n" 726e927ecb0SSuresh Siddha "thread id : %u\n", 727113134fcSAlex Chiang c->core_id, c->thread_id); 728e927ecb0SSuresh Siddha #endif 729e927ecb0SSuresh Siddha seq_printf(m,"\n"); 730e927ecb0SSuresh Siddha 7311da177e4SLinus Torvalds return 0; 7321da177e4SLinus Torvalds } 7331da177e4SLinus Torvalds 7341da177e4SLinus Torvalds static void * 7351da177e4SLinus Torvalds c_start (struct seq_file *m, loff_t *pos) 7361da177e4SLinus Torvalds { 7371da177e4SLinus Torvalds #ifdef CONFIG_SMP 7385dd3c994SRusty Russell while (*pos < nr_cpu_ids && !cpu_online(*pos)) 7391da177e4SLinus Torvalds ++*pos; 7401da177e4SLinus Torvalds #endif 7415dd3c994SRusty Russell return *pos < nr_cpu_ids ? cpu_data(*pos) : NULL; 7421da177e4SLinus Torvalds } 7431da177e4SLinus Torvalds 7441da177e4SLinus Torvalds static void * 7451da177e4SLinus Torvalds c_next (struct seq_file *m, void *v, loff_t *pos) 7461da177e4SLinus Torvalds { 7471da177e4SLinus Torvalds ++*pos; 7481da177e4SLinus Torvalds return c_start(m, pos); 7491da177e4SLinus Torvalds } 7501da177e4SLinus Torvalds 7511da177e4SLinus Torvalds static void 7521da177e4SLinus Torvalds c_stop (struct seq_file *m, void *v) 7531da177e4SLinus Torvalds { 7541da177e4SLinus Torvalds } 7551da177e4SLinus Torvalds 756a23fe55eSJan Engelhardt const struct seq_operations cpuinfo_op = { 7571da177e4SLinus Torvalds .start = c_start, 7581da177e4SLinus Torvalds .next = c_next, 7591da177e4SLinus Torvalds .stop = c_stop, 7601da177e4SLinus Torvalds .show = show_cpuinfo 7611da177e4SLinus Torvalds }; 7621da177e4SLinus Torvalds 763c5e83e3fSJack Steiner #define MAX_BRANDS 8 764c5e83e3fSJack Steiner static char brandname[MAX_BRANDS][128]; 76576d08bb3STony Luck 766ccce9bb8SPaul Gortmaker static char * 76776d08bb3STony Luck get_model_name(__u8 family, __u8 model) 76876d08bb3STony Luck { 769c5e83e3fSJack Steiner static int overflow; 77076d08bb3STony Luck char brand[128]; 771c5e83e3fSJack Steiner int i; 77276d08bb3STony Luck 77375f6a1deSTony Luck memcpy(brand, "Unknown", 8); 77476d08bb3STony Luck if (ia64_pal_get_brand_info(brand)) { 77576d08bb3STony Luck if (family == 0x7) 77676d08bb3STony Luck memcpy(brand, "Merced", 7); 77776d08bb3STony Luck else if (family == 0x1f) switch (model) { 77876d08bb3STony Luck case 0: memcpy(brand, "McKinley", 9); break; 77976d08bb3STony Luck case 1: memcpy(brand, "Madison", 8); break; 78076d08bb3STony Luck case 2: memcpy(brand, "Madison up to 9M cache", 23); break; 78175f6a1deSTony Luck } 78276d08bb3STony Luck } 783c5e83e3fSJack Steiner for (i = 0; i < MAX_BRANDS; i++) 784c5e83e3fSJack Steiner if (strcmp(brandname[i], brand) == 0) 785c5e83e3fSJack Steiner return brandname[i]; 786c5e83e3fSJack Steiner for (i = 0; i < MAX_BRANDS; i++) 787c5e83e3fSJack Steiner if (brandname[i][0] == '\0') 788c5e83e3fSJack Steiner return strcpy(brandname[i], brand); 789c5e83e3fSJack Steiner if (overflow++ == 0) 790c5e83e3fSJack Steiner printk(KERN_ERR 791c5e83e3fSJack Steiner "%s: Table overflow. Some processor model information will be missing\n", 792d4ed8084SHarvey Harrison __func__); 793c5e83e3fSJack Steiner return "Unknown"; 79476d08bb3STony Luck } 79576d08bb3STony Luck 796ccce9bb8SPaul Gortmaker static void 7971da177e4SLinus Torvalds identify_cpu (struct cpuinfo_ia64 *c) 7981da177e4SLinus Torvalds { 7991da177e4SLinus Torvalds union { 8001da177e4SLinus Torvalds unsigned long bits[5]; 8011da177e4SLinus Torvalds struct { 8021da177e4SLinus Torvalds /* id 0 & 1: */ 8031da177e4SLinus Torvalds char vendor[16]; 8041da177e4SLinus Torvalds 8051da177e4SLinus Torvalds /* id 2 */ 8061da177e4SLinus Torvalds u64 ppn; /* processor serial number */ 8071da177e4SLinus Torvalds 8081da177e4SLinus Torvalds /* id 3: */ 8091da177e4SLinus Torvalds unsigned number : 8; 8101da177e4SLinus Torvalds unsigned revision : 8; 8111da177e4SLinus Torvalds unsigned model : 8; 8121da177e4SLinus Torvalds unsigned family : 8; 8131da177e4SLinus Torvalds unsigned archrev : 8; 8141da177e4SLinus Torvalds unsigned reserved : 24; 8151da177e4SLinus Torvalds 8161da177e4SLinus Torvalds /* id 4: */ 8171da177e4SLinus Torvalds u64 features; 8181da177e4SLinus Torvalds } field; 8191da177e4SLinus Torvalds } cpuid; 8201da177e4SLinus Torvalds pal_vm_info_1_u_t vm1; 8211da177e4SLinus Torvalds pal_vm_info_2_u_t vm2; 8221da177e4SLinus Torvalds pal_status_t status; 8231da177e4SLinus Torvalds unsigned long impl_va_msb = 50, phys_addr_size = 44; /* Itanium defaults */ 8241da177e4SLinus Torvalds int i; 8251da177e4SLinus Torvalds for (i = 0; i < 5; ++i) 8261da177e4SLinus Torvalds cpuid.bits[i] = ia64_get_cpuid(i); 8271da177e4SLinus Torvalds 8281da177e4SLinus Torvalds memcpy(c->vendor, cpuid.field.vendor, 16); 8291da177e4SLinus Torvalds #ifdef CONFIG_SMP 8301da177e4SLinus Torvalds c->cpu = smp_processor_id(); 831e927ecb0SSuresh Siddha 832e927ecb0SSuresh Siddha /* below default values will be overwritten by identify_siblings() 83372fdbdceSSimon Arlott * for Multi-Threading/Multi-Core capable CPUs 834e927ecb0SSuresh Siddha */ 835e927ecb0SSuresh Siddha c->threads_per_core = c->cores_per_socket = c->num_log = 1; 836e927ecb0SSuresh Siddha c->socket_id = -1; 837e927ecb0SSuresh Siddha 838e927ecb0SSuresh Siddha identify_siblings(c); 839113134fcSAlex Chiang 840113134fcSAlex Chiang if (c->threads_per_core > smp_num_siblings) 841113134fcSAlex Chiang smp_num_siblings = c->threads_per_core; 8421da177e4SLinus Torvalds #endif 8431da177e4SLinus Torvalds c->ppn = cpuid.field.ppn; 8441da177e4SLinus Torvalds c->number = cpuid.field.number; 8451da177e4SLinus Torvalds c->revision = cpuid.field.revision; 8461da177e4SLinus Torvalds c->model = cpuid.field.model; 8471da177e4SLinus Torvalds c->family = cpuid.field.family; 8481da177e4SLinus Torvalds c->archrev = cpuid.field.archrev; 8491da177e4SLinus Torvalds c->features = cpuid.field.features; 85076d08bb3STony Luck c->model_name = get_model_name(c->family, c->model); 8511da177e4SLinus Torvalds 8521da177e4SLinus Torvalds status = ia64_pal_vm_summary(&vm1, &vm2); 8531da177e4SLinus Torvalds if (status == PAL_STATUS_SUCCESS) { 8541da177e4SLinus Torvalds impl_va_msb = vm2.pal_vm_info_2_s.impl_va_msb; 8551da177e4SLinus Torvalds phys_addr_size = vm1.pal_vm_info_1_s.phys_add_size; 8561da177e4SLinus Torvalds } 8571da177e4SLinus Torvalds c->unimpl_va_mask = ~((7L<<61) | ((1L << (impl_va_msb + 1)) - 1)); 8581da177e4SLinus Torvalds c->unimpl_pa_mask = ~((1L<<63) | ((1L << phys_addr_size) - 1)); 8591da177e4SLinus Torvalds } 8601da177e4SLinus Torvalds 861872fb6ddSFenghua Yu /* 86262fdd767SFenghua Yu * Do the following calculations: 86308357f82SZoltan Menyhart * 86462fdd767SFenghua Yu * 1. the max. cache line size. 86562fdd767SFenghua Yu * 2. the minimum of the i-cache stride sizes for "flush_icache_range()". 86662fdd767SFenghua Yu * 3. the minimum of the cache stride sizes for "clflush_cache_range()". 86708357f82SZoltan Menyhart */ 868ccce9bb8SPaul Gortmaker static void 86962fdd767SFenghua Yu get_cache_info(void) 8701da177e4SLinus Torvalds { 8711da177e4SLinus Torvalds unsigned long line_size, max = 1; 872e088a4adSMatthew Wilcox unsigned long l, levels, unique_caches; 8731da177e4SLinus Torvalds pal_cache_config_info_t cci; 874e088a4adSMatthew Wilcox long status; 8751da177e4SLinus Torvalds 8761da177e4SLinus Torvalds status = ia64_pal_cache_summary(&levels, &unique_caches); 8771da177e4SLinus Torvalds if (status != 0) { 8781da177e4SLinus Torvalds printk(KERN_ERR "%s: ia64_pal_cache_summary() failed (status=%ld)\n", 879d4ed8084SHarvey Harrison __func__, status); 8801da177e4SLinus Torvalds max = SMP_CACHE_BYTES; 88108357f82SZoltan Menyhart /* Safest setup for "flush_icache_range()" */ 88208357f82SZoltan Menyhart ia64_i_cache_stride_shift = I_CACHE_STRIDE_SHIFT; 88362fdd767SFenghua Yu /* Safest setup for "clflush_cache_range()" */ 88462fdd767SFenghua Yu ia64_cache_stride_shift = CACHE_STRIDE_SHIFT; 8851da177e4SLinus Torvalds goto out; 8861da177e4SLinus Torvalds } 8871da177e4SLinus Torvalds 8881da177e4SLinus Torvalds for (l = 0; l < levels; ++l) { 88962fdd767SFenghua Yu /* cache_type (data_or_unified)=2 */ 89062fdd767SFenghua Yu status = ia64_pal_cache_config_info(l, 2, &cci); 8911da177e4SLinus Torvalds if (status != 0) { 892e088a4adSMatthew Wilcox printk(KERN_ERR "%s: ia64_pal_cache_config_info" 893e088a4adSMatthew Wilcox "(l=%lu, 2) failed (status=%ld)\n", 894d4ed8084SHarvey Harrison __func__, l, status); 8951da177e4SLinus Torvalds max = SMP_CACHE_BYTES; 89608357f82SZoltan Menyhart /* The safest setup for "flush_icache_range()" */ 89708357f82SZoltan Menyhart cci.pcci_stride = I_CACHE_STRIDE_SHIFT; 89862fdd767SFenghua Yu /* The safest setup for "clflush_cache_range()" */ 89962fdd767SFenghua Yu ia64_cache_stride_shift = CACHE_STRIDE_SHIFT; 90008357f82SZoltan Menyhart cci.pcci_unified = 1; 90162fdd767SFenghua Yu } else { 90262fdd767SFenghua Yu if (cci.pcci_stride < ia64_cache_stride_shift) 90362fdd767SFenghua Yu ia64_cache_stride_shift = cci.pcci_stride; 90462fdd767SFenghua Yu 9051da177e4SLinus Torvalds line_size = 1 << cci.pcci_line_size; 9061da177e4SLinus Torvalds if (line_size > max) 9071da177e4SLinus Torvalds max = line_size; 90862fdd767SFenghua Yu } 90962fdd767SFenghua Yu 91008357f82SZoltan Menyhart if (!cci.pcci_unified) { 91162fdd767SFenghua Yu /* cache_type (instruction)=1*/ 91262fdd767SFenghua Yu status = ia64_pal_cache_config_info(l, 1, &cci); 91308357f82SZoltan Menyhart if (status != 0) { 914e088a4adSMatthew Wilcox printk(KERN_ERR "%s: ia64_pal_cache_config_info" 915e088a4adSMatthew Wilcox "(l=%lu, 1) failed (status=%ld)\n", 916d4ed8084SHarvey Harrison __func__, l, status); 917e088a4adSMatthew Wilcox /* The safest setup for flush_icache_range() */ 91808357f82SZoltan Menyhart cci.pcci_stride = I_CACHE_STRIDE_SHIFT; 91908357f82SZoltan Menyhart } 92008357f82SZoltan Menyhart } 92108357f82SZoltan Menyhart if (cci.pcci_stride < ia64_i_cache_stride_shift) 92208357f82SZoltan Menyhart ia64_i_cache_stride_shift = cci.pcci_stride; 9231da177e4SLinus Torvalds } 9241da177e4SLinus Torvalds out: 9251da177e4SLinus Torvalds if (max > ia64_max_cacheline_size) 9261da177e4SLinus Torvalds ia64_max_cacheline_size = max; 9271da177e4SLinus Torvalds } 9281da177e4SLinus Torvalds 9291da177e4SLinus Torvalds /* 9301da177e4SLinus Torvalds * cpu_init() initializes state that is per-CPU. This function acts 9311da177e4SLinus Torvalds * as a 'CPU state barrier', nothing should get across. 9321da177e4SLinus Torvalds */ 933ccce9bb8SPaul Gortmaker void 9341da177e4SLinus Torvalds cpu_init (void) 9351da177e4SLinus Torvalds { 936ccce9bb8SPaul Gortmaker extern void ia64_mmu_init(void *); 937a0776ec8SChen, Kenneth W static unsigned long max_num_phys_stacked = IA64_NUM_PHYS_STACK_REG; 9381da177e4SLinus Torvalds unsigned long num_phys_stacked; 9391da177e4SLinus Torvalds pal_vm_info_2_u_t vmi; 9401da177e4SLinus Torvalds unsigned int max_ctx; 9411da177e4SLinus Torvalds struct cpuinfo_ia64 *cpu_info; 9421da177e4SLinus Torvalds void *cpu_data; 9431da177e4SLinus Torvalds 9441da177e4SLinus Torvalds cpu_data = per_cpu_init(); 9454d1efed5STony Luck #ifdef CONFIG_SMP 946d5a7430dSMike Travis /* 947d5a7430dSMike Travis * insert boot cpu into sibling and core mapes 948d5a7430dSMike Travis * (must be done after per_cpu area is setup) 949d5a7430dSMike Travis */ 950d5a7430dSMike Travis if (smp_processor_id() == 0) { 9515d2068daSRusty Russell cpumask_set_cpu(0, &per_cpu(cpu_sibling_map, 0)); 9525d2068daSRusty Russell cpumask_set_cpu(0, &cpu_core_map[0]); 95310617bbeSTony Luck } else { 9541da177e4SLinus Torvalds /* 95510617bbeSTony Luck * Set ar.k3 so that assembly code in MCA handler can compute 9561da177e4SLinus Torvalds * physical addresses of per cpu variables with a simple: 9571da177e4SLinus Torvalds * phys = ar.k3 + &per_cpu_var 95810617bbeSTony Luck * and the alt-dtlb-miss handler can set per-cpu mapping into 95910617bbeSTony Luck * the TLB when needed. head.S already did this for cpu0. 9601da177e4SLinus Torvalds */ 9611da177e4SLinus Torvalds ia64_set_kr(IA64_KR_PER_CPU_DATA, 9621da177e4SLinus Torvalds ia64_tpa(cpu_data) - (long) __per_cpu_start); 96310617bbeSTony Luck } 96410617bbeSTony Luck #endif 9651da177e4SLinus Torvalds 96662fdd767SFenghua Yu get_cache_info(); 9671da177e4SLinus Torvalds 9681da177e4SLinus Torvalds /* 9691da177e4SLinus Torvalds * We can't pass "local_cpu_data" to identify_cpu() because we haven't called 9701da177e4SLinus Torvalds * ia64_mmu_init() yet. And we can't call ia64_mmu_init() first because it 9711da177e4SLinus Torvalds * depends on the data returned by identify_cpu(). We break the dependency by 9721da177e4SLinus Torvalds * accessing cpu_data() through the canonical per-CPU address. 9731da177e4SLinus Torvalds */ 974877105ccSTejun Heo cpu_info = cpu_data + ((char *) &__ia64_per_cpu_var(ia64_cpu_info) - __per_cpu_start); 9751da177e4SLinus Torvalds identify_cpu(cpu_info); 9761da177e4SLinus Torvalds 9771da177e4SLinus Torvalds #ifdef CONFIG_MCKINLEY 9781da177e4SLinus Torvalds { 9791da177e4SLinus Torvalds # define FEATURE_SET 16 9801da177e4SLinus Torvalds struct ia64_pal_retval iprv; 9811da177e4SLinus Torvalds 9821da177e4SLinus Torvalds if (cpu_info->family == 0x1f) { 9831da177e4SLinus Torvalds PAL_CALL_PHYS(iprv, PAL_PROC_GET_FEATURES, 0, FEATURE_SET, 0); 9841da177e4SLinus Torvalds if ((iprv.status == 0) && (iprv.v0 & 0x80) && (iprv.v2 & 0x80)) 9851da177e4SLinus Torvalds PAL_CALL_PHYS(iprv, PAL_PROC_SET_FEATURES, 9861da177e4SLinus Torvalds (iprv.v1 | 0x80), FEATURE_SET, 0); 9871da177e4SLinus Torvalds } 9881da177e4SLinus Torvalds } 9891da177e4SLinus Torvalds #endif 9901da177e4SLinus Torvalds 9911da177e4SLinus Torvalds /* Clear the stack memory reserved for pt_regs: */ 9926450578fSAl Viro memset(task_pt_regs(current), 0, sizeof(struct pt_regs)); 9931da177e4SLinus Torvalds 9941da177e4SLinus Torvalds ia64_set_kr(IA64_KR_FPU_OWNER, 0); 9951da177e4SLinus Torvalds 9961da177e4SLinus Torvalds /* 9971da177e4SLinus Torvalds * Initialize the page-table base register to a global 9981da177e4SLinus Torvalds * directory with all zeroes. This ensure that we can handle 9991da177e4SLinus Torvalds * TLB-misses to user address-space even before we created the 10001da177e4SLinus Torvalds * first user address-space. This may happen, e.g., due to 10011da177e4SLinus Torvalds * aggressive use of lfetch.fault. 10021da177e4SLinus Torvalds */ 10031da177e4SLinus Torvalds ia64_set_kr(IA64_KR_PT_BASE, __pa(ia64_imva(empty_zero_page))); 10041da177e4SLinus Torvalds 10051da177e4SLinus Torvalds /* 100686ebacd3STony Luck * Initialize default control register to defer speculative faults except 100786ebacd3STony Luck * for those arising from TLB misses, which are not deferred. The 10081da177e4SLinus Torvalds * kernel MUST NOT depend on a particular setting of these bits (in other words, 10091da177e4SLinus Torvalds * the kernel must have recovery code for all speculative accesses). Turn on 10101da177e4SLinus Torvalds * dcr.lc as per recommendation by the architecture team. Most IA-32 apps 10111da177e4SLinus Torvalds * shouldn't be affected by this (moral: keep your ia32 locks aligned and you'll 10121da177e4SLinus Torvalds * be fine). 10131da177e4SLinus Torvalds */ 10141da177e4SLinus Torvalds ia64_setreg(_IA64_REG_CR_DCR, ( IA64_DCR_DP | IA64_DCR_DK | IA64_DCR_DX | IA64_DCR_DR 10151da177e4SLinus Torvalds | IA64_DCR_DA | IA64_DCR_DD | IA64_DCR_LC)); 1016f1f10076SVegard Nossum mmgrab(&init_mm); 10171da177e4SLinus Torvalds current->active_mm = &init_mm; 101880a03e29SStoyan Gaydarov BUG_ON(current->mm); 10191da177e4SLinus Torvalds 10201da177e4SLinus Torvalds ia64_mmu_init(ia64_imva(cpu_data)); 10211da177e4SLinus Torvalds ia64_mca_cpu_init(ia64_imva(cpu_data)); 10221da177e4SLinus Torvalds 102372fdbdceSSimon Arlott /* Clear ITC to eliminate sched_clock() overflows in human time. */ 10241da177e4SLinus Torvalds ia64_set_itc(0); 10251da177e4SLinus Torvalds 10261da177e4SLinus Torvalds /* disable all local interrupt sources: */ 10271da177e4SLinus Torvalds ia64_set_itv(1 << 16); 10281da177e4SLinus Torvalds ia64_set_lrr0(1 << 16); 10291da177e4SLinus Torvalds ia64_set_lrr1(1 << 16); 10301da177e4SLinus Torvalds ia64_setreg(_IA64_REG_CR_PMV, 1 << 16); 10311da177e4SLinus Torvalds ia64_setreg(_IA64_REG_CR_CMCV, 1 << 16); 10321da177e4SLinus Torvalds 10331da177e4SLinus Torvalds /* clear TPR & XTP to enable all interrupt classes: */ 10341da177e4SLinus Torvalds ia64_setreg(_IA64_REG_CR_TPR, 0); 1035f740e6c9SKenji Kaneshige 1036f740e6c9SKenji Kaneshige /* Clear any pending interrupts left by SAL/EFI */ 1037f740e6c9SKenji Kaneshige while (ia64_get_ivr() != IA64_SPURIOUS_INT_VECTOR) 1038f740e6c9SKenji Kaneshige ia64_eoi(); 1039f740e6c9SKenji Kaneshige 10401da177e4SLinus Torvalds #ifdef CONFIG_SMP 10411da177e4SLinus Torvalds normal_xtp(); 10421da177e4SLinus Torvalds #endif 10431da177e4SLinus Torvalds 10441da177e4SLinus Torvalds /* set ia64_ctx.max_rid to the maximum RID that is supported by all CPUs: */ 10452046b94eSFenghua Yu if (ia64_pal_vm_summary(NULL, &vmi) == 0) { 10461da177e4SLinus Torvalds max_ctx = (1U << (vmi.pal_vm_info_2_s.rid_size - 3)) - 1; 1047a6c75b86SFenghua Yu setup_ptcg_sem(vmi.pal_vm_info_2_s.max_purges, NPTCG_FROM_PAL); 10482046b94eSFenghua Yu } else { 10491da177e4SLinus Torvalds printk(KERN_WARNING "cpu_init: PAL VM summary failed, assuming 18 RID bits\n"); 10501da177e4SLinus Torvalds max_ctx = (1U << 15) - 1; /* use architected minimum */ 10511da177e4SLinus Torvalds } 10521da177e4SLinus Torvalds while (max_ctx < ia64_ctx.max_ctx) { 10531da177e4SLinus Torvalds unsigned int old = ia64_ctx.max_ctx; 10541da177e4SLinus Torvalds if (cmpxchg(&ia64_ctx.max_ctx, old, max_ctx) == old) 10551da177e4SLinus Torvalds break; 10561da177e4SLinus Torvalds } 10571da177e4SLinus Torvalds 10581da177e4SLinus Torvalds if (ia64_pal_rse_info(&num_phys_stacked, NULL) != 0) { 10591da177e4SLinus Torvalds printk(KERN_WARNING "cpu_init: PAL RSE info failed; assuming 96 physical " 10601da177e4SLinus Torvalds "stacked regs\n"); 10611da177e4SLinus Torvalds num_phys_stacked = 96; 10621da177e4SLinus Torvalds } 10631da177e4SLinus Torvalds /* size of physical stacked register partition plus 8 bytes: */ 1064a0776ec8SChen, Kenneth W if (num_phys_stacked > max_num_phys_stacked) { 1065a0776ec8SChen, Kenneth W ia64_patch_phys_stack_reg(num_phys_stacked*8 + 8); 1066a0776ec8SChen, Kenneth W max_num_phys_stacked = num_phys_stacked; 1067a0776ec8SChen, Kenneth W } 10681da177e4SLinus Torvalds } 10691da177e4SLinus Torvalds 1070244fd545SChen, Kenneth W void __init 10711da177e4SLinus Torvalds check_bugs (void) 10721da177e4SLinus Torvalds { 10731da177e4SLinus Torvalds ia64_patch_mckinley_e9((unsigned long) __start___mckinley_e9_bundles, 10741da177e4SLinus Torvalds (unsigned long) __end___mckinley_e9_bundles); 10751da177e4SLinus Torvalds } 10763ed3bce8SMatt Domsch 10773ed3bce8SMatt Domsch static int __init run_dmi_scan(void) 10783ed3bce8SMatt Domsch { 10790fca0812SRobert Richter dmi_setup(); 10803ed3bce8SMatt Domsch return 0; 10813ed3bce8SMatt Domsch } 10823ed3bce8SMatt Domsch core_initcall(run_dmi_scan); 1083