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> 281da177e4SLinus Torvalds 291da177e4SLinus Torvalds #include <linux/acpi.h> 301da177e4SLinus Torvalds #include <linux/bootmem.h> 311da177e4SLinus Torvalds #include <linux/console.h> 321da177e4SLinus Torvalds #include <linux/delay.h> 331777e463SIngo Molnar #include <linux/cpu.h> 341da177e4SLinus Torvalds #include <linux/kernel.h> 351da177e4SLinus Torvalds #include <linux/reboot.h> 3668e21be2SIngo Molnar #include <linux/sched/mm.h> 37e6017571SIngo Molnar #include <linux/sched/clock.h> 3868db0cf1SIngo Molnar #include <linux/sched/task_stack.h> 391da177e4SLinus Torvalds #include <linux/seq_file.h> 401da177e4SLinus Torvalds #include <linux/string.h> 411da177e4SLinus Torvalds #include <linux/threads.h> 42894673eeSJon Smirl #include <linux/screen_info.h> 433ed3bce8SMatt Domsch #include <linux/dmi.h> 441da177e4SLinus Torvalds #include <linux/serial.h> 451da177e4SLinus Torvalds #include <linux/serial_core.h> 461da177e4SLinus Torvalds #include <linux/efi.h> 471da177e4SLinus Torvalds #include <linux/initrd.h> 486c4fa560SVenkatesh Pallipadi #include <linux/pm.h> 4995235ca2SVenkatesh Pallipadi #include <linux/cpufreq.h> 50a7956113SZou Nan hai #include <linux/kexec.h> 51a7956113SZou Nan hai #include <linux/crash_dump.h> 521da177e4SLinus Torvalds 531da177e4SLinus Torvalds #include <asm/machvec.h> 541da177e4SLinus Torvalds #include <asm/mca.h> 551da177e4SLinus Torvalds #include <asm/meminit.h> 561da177e4SLinus Torvalds #include <asm/page.h> 571da177e4SLinus Torvalds #include <asm/patch.h> 581da177e4SLinus Torvalds #include <asm/pgtable.h> 591da177e4SLinus Torvalds #include <asm/processor.h> 601da177e4SLinus Torvalds #include <asm/sal.h> 611da177e4SLinus Torvalds #include <asm/sections.h> 621da177e4SLinus Torvalds #include <asm/setup.h> 631da177e4SLinus Torvalds #include <asm/smp.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 77877105ccSTejun Heo DEFINE_PER_CPU(struct cpuinfo_ia64, ia64_cpu_info); 78e007c533SAl Viro EXPORT_SYMBOL(ia64_cpu_info); 791da177e4SLinus Torvalds DEFINE_PER_CPU(unsigned long, local_per_cpu_offset); 80e007c533SAl Viro #ifdef CONFIG_SMP 81e007c533SAl Viro EXPORT_SYMBOL(local_per_cpu_offset); 82e007c533SAl Viro #endif 831da177e4SLinus Torvalds unsigned long ia64_cycles_per_usec; 841da177e4SLinus Torvalds struct ia64_boot_param *ia64_boot_param; 851da177e4SLinus Torvalds struct screen_info screen_info; 8666b7f8a3SMark Maule unsigned long vga_console_iobase; 8766b7f8a3SMark Maule unsigned long vga_console_membase; 881da177e4SLinus Torvalds 89be379124SKhalid Aziz static struct resource data_resource = { 90be379124SKhalid Aziz .name = "Kernel data", 9103cb525eSToshi Kani .flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM 92be379124SKhalid Aziz }; 93be379124SKhalid Aziz 94be379124SKhalid Aziz static struct resource code_resource = { 95be379124SKhalid Aziz .name = "Kernel code", 9603cb525eSToshi Kani .flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM 97be379124SKhalid Aziz }; 9800bf4098SBernhard Walle 9900bf4098SBernhard Walle static struct resource bss_resource = { 10000bf4098SBernhard Walle .name = "Kernel bss", 10103cb525eSToshi Kani .flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM 10200bf4098SBernhard Walle }; 103be379124SKhalid Aziz 1041da177e4SLinus Torvalds unsigned long ia64_max_cacheline_size; 105e1531b42SJohn W. Linville 1061da177e4SLinus Torvalds unsigned long ia64_iobase; /* virtual address for I/O accesses */ 1071da177e4SLinus Torvalds EXPORT_SYMBOL(ia64_iobase); 1081da177e4SLinus Torvalds struct io_space io_space[MAX_IO_SPACES]; 1091da177e4SLinus Torvalds EXPORT_SYMBOL(io_space); 1101da177e4SLinus Torvalds unsigned int num_io_spaces; 1111da177e4SLinus Torvalds 1121da177e4SLinus Torvalds /* 11308357f82SZoltan Menyhart * "flush_icache_range()" needs to know what processor dependent stride size to use 11408357f82SZoltan Menyhart * when it makes i-cache(s) coherent with d-caches. 11508357f82SZoltan Menyhart */ 11608357f82SZoltan Menyhart #define I_CACHE_STRIDE_SHIFT 5 /* Safest way to go: 32 bytes by 32 bytes */ 11708357f82SZoltan Menyhart unsigned long ia64_i_cache_stride_shift = ~0; 11862fdd767SFenghua Yu /* 11962fdd767SFenghua Yu * "clflush_cache_range()" needs to know what processor dependent stride size to 12062fdd767SFenghua Yu * use when it flushes cache lines including both d-cache and i-cache. 12162fdd767SFenghua Yu */ 12262fdd767SFenghua Yu /* Safest way to go: 32 bytes by 32 bytes */ 12362fdd767SFenghua Yu #define CACHE_STRIDE_SHIFT 5 12462fdd767SFenghua Yu unsigned long ia64_cache_stride_shift = ~0; 12508357f82SZoltan Menyhart 12608357f82SZoltan Menyhart /* 1271da177e4SLinus Torvalds * The merge_mask variable needs to be set to (max(iommu_page_size(iommu)) - 1). This 1281da177e4SLinus Torvalds * mask specifies a mask of address bits that must be 0 in order for two buffers to be 1291da177e4SLinus Torvalds * mergeable by the I/O MMU (i.e., the end address of the first buffer and the start 1301da177e4SLinus Torvalds * address of the second buffer must be aligned to (merge_mask+1) in order to be 1311da177e4SLinus Torvalds * mergeable). By default, we assume there is no I/O MMU which can merge physically 1321da177e4SLinus Torvalds * discontiguous buffers, so we set the merge_mask to ~0UL, which corresponds to a iommu 1331da177e4SLinus Torvalds * page-size of 2^64. 1341da177e4SLinus Torvalds */ 1351da177e4SLinus Torvalds unsigned long ia64_max_iommu_merge_mask = ~0UL; 1361da177e4SLinus Torvalds EXPORT_SYMBOL(ia64_max_iommu_merge_mask); 1371da177e4SLinus Torvalds 1381da177e4SLinus Torvalds /* 1391da177e4SLinus Torvalds * We use a special marker for the end of memory and it uses the extra (+1) slot 1401da177e4SLinus Torvalds */ 141dae28066SChen, Kenneth W struct rsvd_region rsvd_region[IA64_MAX_RSVD_REGIONS + 1] __initdata; 142dae28066SChen, Kenneth W int num_rsvd_regions __initdata; 1431da177e4SLinus Torvalds 1441da177e4SLinus Torvalds 1451da177e4SLinus Torvalds /* 1461da177e4SLinus Torvalds * Filter incoming memory segments based on the primitive map created from the boot 1471da177e4SLinus Torvalds * parameters. Segments contained in the map are removed from the memory ranges. A 1481da177e4SLinus Torvalds * caller-specified function is called with the memory ranges that remain after filtering. 1491da177e4SLinus Torvalds * This routine does not assume the incoming segments are sorted. 1501da177e4SLinus Torvalds */ 151dae28066SChen, Kenneth W int __init 152e088a4adSMatthew Wilcox filter_rsvd_memory (u64 start, u64 end, void *arg) 1531da177e4SLinus Torvalds { 154e088a4adSMatthew Wilcox u64 range_start, range_end, prev_start; 1551da177e4SLinus Torvalds void (*func)(unsigned long, unsigned long, int); 1561da177e4SLinus Torvalds int i; 1571da177e4SLinus Torvalds 1581da177e4SLinus Torvalds #if IGNORE_PFN0 1591da177e4SLinus Torvalds if (start == PAGE_OFFSET) { 1601da177e4SLinus Torvalds printk(KERN_WARNING "warning: skipping physical page 0\n"); 1611da177e4SLinus Torvalds start += PAGE_SIZE; 1621da177e4SLinus Torvalds if (start >= end) return 0; 1631da177e4SLinus Torvalds } 1641da177e4SLinus Torvalds #endif 1651da177e4SLinus Torvalds /* 1661da177e4SLinus Torvalds * lowest possible address(walker uses virtual) 1671da177e4SLinus Torvalds */ 1681da177e4SLinus Torvalds prev_start = PAGE_OFFSET; 1691da177e4SLinus Torvalds func = arg; 1701da177e4SLinus Torvalds 1711da177e4SLinus Torvalds for (i = 0; i < num_rsvd_regions; ++i) { 1721da177e4SLinus Torvalds range_start = max(start, prev_start); 1731da177e4SLinus Torvalds range_end = min(end, rsvd_region[i].start); 1741da177e4SLinus Torvalds 1751da177e4SLinus Torvalds if (range_start < range_end) 1761da177e4SLinus Torvalds call_pernode_memory(__pa(range_start), range_end - range_start, func); 1771da177e4SLinus Torvalds 1781da177e4SLinus Torvalds /* nothing more available in this segment */ 1791da177e4SLinus Torvalds if (range_end == end) return 0; 1801da177e4SLinus Torvalds 1811da177e4SLinus Torvalds prev_start = rsvd_region[i].end; 1821da177e4SLinus Torvalds } 1831da177e4SLinus Torvalds /* end of memory marker allows full processing inside loop body */ 1841da177e4SLinus Torvalds return 0; 1851da177e4SLinus Torvalds } 1861da177e4SLinus Torvalds 18798075d24SZoltan Menyhart /* 18898075d24SZoltan Menyhart * Similar to "filter_rsvd_memory()", but the reserved memory ranges 18998075d24SZoltan Menyhart * are not filtered out. 19098075d24SZoltan Menyhart */ 19198075d24SZoltan Menyhart int __init 192e088a4adSMatthew Wilcox filter_memory(u64 start, u64 end, void *arg) 19398075d24SZoltan Menyhart { 19498075d24SZoltan Menyhart void (*func)(unsigned long, unsigned long, int); 19598075d24SZoltan Menyhart 19698075d24SZoltan Menyhart #if IGNORE_PFN0 19798075d24SZoltan Menyhart if (start == PAGE_OFFSET) { 19898075d24SZoltan Menyhart printk(KERN_WARNING "warning: skipping physical page 0\n"); 19998075d24SZoltan Menyhart start += PAGE_SIZE; 20098075d24SZoltan Menyhart if (start >= end) 20198075d24SZoltan Menyhart return 0; 20298075d24SZoltan Menyhart } 20398075d24SZoltan Menyhart #endif 20498075d24SZoltan Menyhart func = arg; 20598075d24SZoltan Menyhart if (start < end) 20698075d24SZoltan Menyhart call_pernode_memory(__pa(start), end - start, func); 20798075d24SZoltan Menyhart return 0; 20898075d24SZoltan Menyhart } 20998075d24SZoltan Menyhart 210dae28066SChen, Kenneth W static void __init 2111da177e4SLinus Torvalds sort_regions (struct rsvd_region *rsvd_region, int max) 2121da177e4SLinus Torvalds { 2131da177e4SLinus Torvalds int j; 2141da177e4SLinus Torvalds 2151da177e4SLinus Torvalds /* simple bubble sorting */ 2161da177e4SLinus Torvalds while (max--) { 2171da177e4SLinus Torvalds for (j = 0; j < max; ++j) { 2181da177e4SLinus Torvalds if (rsvd_region[j].start > rsvd_region[j+1].start) { 2191da177e4SLinus Torvalds struct rsvd_region tmp; 2201da177e4SLinus Torvalds tmp = rsvd_region[j]; 2211da177e4SLinus Torvalds rsvd_region[j] = rsvd_region[j + 1]; 2221da177e4SLinus Torvalds rsvd_region[j + 1] = tmp; 2231da177e4SLinus Torvalds } 2241da177e4SLinus Torvalds } 2251da177e4SLinus Torvalds } 2261da177e4SLinus Torvalds } 2271da177e4SLinus Torvalds 22876d71ebdSPetr Tesarik /* merge overlaps */ 22976d71ebdSPetr Tesarik static int __init 23076d71ebdSPetr Tesarik merge_regions (struct rsvd_region *rsvd_region, int max) 23176d71ebdSPetr Tesarik { 23276d71ebdSPetr Tesarik int i; 23376d71ebdSPetr Tesarik for (i = 1; i < max; ++i) { 23476d71ebdSPetr Tesarik if (rsvd_region[i].start >= rsvd_region[i-1].end) 23576d71ebdSPetr Tesarik continue; 23676d71ebdSPetr Tesarik if (rsvd_region[i].end > rsvd_region[i-1].end) 23776d71ebdSPetr Tesarik rsvd_region[i-1].end = rsvd_region[i].end; 23876d71ebdSPetr Tesarik --max; 23976d71ebdSPetr Tesarik memmove(&rsvd_region[i], &rsvd_region[i+1], 24076d71ebdSPetr Tesarik (max - i) * sizeof(struct rsvd_region)); 24176d71ebdSPetr Tesarik } 24276d71ebdSPetr Tesarik return max; 24376d71ebdSPetr Tesarik } 24476d71ebdSPetr Tesarik 245be379124SKhalid Aziz /* 246be379124SKhalid Aziz * Request address space for all standard resources 247be379124SKhalid Aziz */ 248be379124SKhalid Aziz static int __init register_memory(void) 249be379124SKhalid Aziz { 250be379124SKhalid Aziz code_resource.start = ia64_tpa(_text); 251be379124SKhalid Aziz code_resource.end = ia64_tpa(_etext) - 1; 252be379124SKhalid Aziz data_resource.start = ia64_tpa(_etext); 25300bf4098SBernhard Walle data_resource.end = ia64_tpa(_edata) - 1; 254b898a424SBernhard Walle bss_resource.start = ia64_tpa(__bss_start); 25500bf4098SBernhard Walle bss_resource.end = ia64_tpa(_end) - 1; 25600bf4098SBernhard Walle efi_initialize_iomem_resources(&code_resource, &data_resource, 25700bf4098SBernhard Walle &bss_resource); 258be379124SKhalid Aziz 259be379124SKhalid Aziz return 0; 260be379124SKhalid Aziz } 261be379124SKhalid Aziz 262be379124SKhalid Aziz __initcall(register_memory); 263be379124SKhalid Aziz 264cb380853SBernhard Walle 265cb380853SBernhard Walle #ifdef CONFIG_KEXEC 2668a3360f0SBernhard Walle 2678a3360f0SBernhard Walle /* 2688a3360f0SBernhard Walle * This function checks if the reserved crashkernel is allowed on the specific 2698a3360f0SBernhard Walle * IA64 machine flavour. Machines without an IO TLB use swiotlb and require 2708a3360f0SBernhard Walle * some memory below 4 GB (i.e. in 32 bit area), see the implementation of 2718a3360f0SBernhard Walle * lib/swiotlb.c. The hpzx1 architecture has an IO TLB but cannot use that 2728a3360f0SBernhard Walle * in kdump case. See the comment in sba_init() in sba_iommu.c. 2738a3360f0SBernhard Walle * 2748a3360f0SBernhard Walle * So, the only machvec that really supports loading the kdump kernel 2758a3360f0SBernhard Walle * over 4 GB is "sn2". 2768a3360f0SBernhard Walle */ 2778a3360f0SBernhard Walle static int __init check_crashkernel_memory(unsigned long pbase, size_t size) 2788a3360f0SBernhard Walle { 2798a3360f0SBernhard Walle if (ia64_platform_is("sn2") || ia64_platform_is("uv")) 2808a3360f0SBernhard Walle return 1; 2818a3360f0SBernhard Walle else 2828a3360f0SBernhard Walle return pbase < (1UL << 32); 2838a3360f0SBernhard Walle } 2848a3360f0SBernhard Walle 285cb380853SBernhard Walle static void __init setup_crashkernel(unsigned long total, int *n) 286cb380853SBernhard Walle { 287cb380853SBernhard Walle unsigned long long base = 0, size = 0; 288cb380853SBernhard Walle int ret; 289cb380853SBernhard Walle 290cb380853SBernhard Walle ret = parse_crashkernel(boot_command_line, total, 291cb380853SBernhard Walle &size, &base); 292cb380853SBernhard Walle if (ret == 0 && size > 0) { 293cb380853SBernhard Walle if (!base) { 294cb380853SBernhard Walle sort_regions(rsvd_region, *n); 29576d71ebdSPetr Tesarik *n = merge_regions(rsvd_region, *n); 296cb380853SBernhard Walle base = kdump_find_rsvd_region(size, 297cb380853SBernhard Walle rsvd_region, *n); 298cb380853SBernhard Walle } 2998a3360f0SBernhard Walle 3008a3360f0SBernhard Walle if (!check_crashkernel_memory(base, size)) { 3018a3360f0SBernhard Walle pr_warning("crashkernel: There would be kdump memory " 3028a3360f0SBernhard Walle "at %ld GB but this is unusable because it " 3038a3360f0SBernhard Walle "must\nbe below 4 GB. Change the memory " 3048a3360f0SBernhard Walle "configuration of the machine.\n", 3058a3360f0SBernhard Walle (unsigned long)(base >> 30)); 3068a3360f0SBernhard Walle return; 3078a3360f0SBernhard Walle } 3088a3360f0SBernhard Walle 309cb380853SBernhard Walle if (base != ~0UL) { 310cb380853SBernhard Walle printk(KERN_INFO "Reserving %ldMB of memory at %ldMB " 311cb380853SBernhard Walle "for crashkernel (System RAM: %ldMB)\n", 312cb380853SBernhard Walle (unsigned long)(size >> 20), 313cb380853SBernhard Walle (unsigned long)(base >> 20), 314cb380853SBernhard Walle (unsigned long)(total >> 20)); 315cb380853SBernhard Walle rsvd_region[*n].start = 316cb380853SBernhard Walle (unsigned long)__va(base); 317cb380853SBernhard Walle rsvd_region[*n].end = 318cb380853SBernhard Walle (unsigned long)__va(base + size); 319cb380853SBernhard Walle (*n)++; 320cb380853SBernhard Walle crashk_res.start = base; 321cb380853SBernhard Walle crashk_res.end = base + size - 1; 322cb380853SBernhard Walle } 323cb380853SBernhard Walle } 324cb380853SBernhard Walle efi_memmap_res.start = ia64_boot_param->efi_memmap; 325cb380853SBernhard Walle efi_memmap_res.end = efi_memmap_res.start + 326cb380853SBernhard Walle ia64_boot_param->efi_memmap_size; 327cb380853SBernhard Walle boot_param_res.start = __pa(ia64_boot_param); 328cb380853SBernhard Walle boot_param_res.end = boot_param_res.start + 329cb380853SBernhard Walle sizeof(*ia64_boot_param); 330cb380853SBernhard Walle } 331cb380853SBernhard Walle #else 332cb380853SBernhard Walle static inline void __init setup_crashkernel(unsigned long total, int *n) 333cb380853SBernhard Walle {} 334cb380853SBernhard Walle #endif 335cb380853SBernhard Walle 3361da177e4SLinus Torvalds /** 3371da177e4SLinus Torvalds * reserve_memory - setup reserved memory areas 3381da177e4SLinus Torvalds * 3391da177e4SLinus Torvalds * Setup the reserved memory areas set aside for the boot parameters, 3401da177e4SLinus Torvalds * initrd, etc. There are currently %IA64_MAX_RSVD_REGIONS defined, 3417f30491cSTony Luck * see arch/ia64/include/asm/meminit.h if you need to define more. 3421da177e4SLinus Torvalds */ 343dae28066SChen, Kenneth W void __init 3441da177e4SLinus Torvalds reserve_memory (void) 3451da177e4SLinus Torvalds { 3461da177e4SLinus Torvalds int n = 0; 347cb380853SBernhard Walle unsigned long total_memory; 3481da177e4SLinus Torvalds 3491da177e4SLinus Torvalds /* 3501da177e4SLinus Torvalds * none of the entries in this table overlap 3511da177e4SLinus Torvalds */ 3521da177e4SLinus Torvalds rsvd_region[n].start = (unsigned long) ia64_boot_param; 3531da177e4SLinus Torvalds rsvd_region[n].end = rsvd_region[n].start + sizeof(*ia64_boot_param); 3541da177e4SLinus Torvalds n++; 3551da177e4SLinus Torvalds 3561da177e4SLinus Torvalds rsvd_region[n].start = (unsigned long) __va(ia64_boot_param->efi_memmap); 3571da177e4SLinus Torvalds rsvd_region[n].end = rsvd_region[n].start + ia64_boot_param->efi_memmap_size; 3581da177e4SLinus Torvalds n++; 3591da177e4SLinus Torvalds 3601da177e4SLinus Torvalds rsvd_region[n].start = (unsigned long) __va(ia64_boot_param->command_line); 3611da177e4SLinus Torvalds rsvd_region[n].end = (rsvd_region[n].start 3621da177e4SLinus Torvalds + strlen(__va(ia64_boot_param->command_line)) + 1); 3631da177e4SLinus Torvalds n++; 3641da177e4SLinus Torvalds 3651da177e4SLinus Torvalds rsvd_region[n].start = (unsigned long) ia64_imva((void *)KERNEL_START); 3661da177e4SLinus Torvalds rsvd_region[n].end = (unsigned long) ia64_imva(_end); 3671da177e4SLinus Torvalds n++; 3681da177e4SLinus Torvalds 3691da177e4SLinus Torvalds #ifdef CONFIG_BLK_DEV_INITRD 3701da177e4SLinus Torvalds if (ia64_boot_param->initrd_start) { 3711da177e4SLinus Torvalds rsvd_region[n].start = (unsigned long)__va(ia64_boot_param->initrd_start); 3721da177e4SLinus Torvalds rsvd_region[n].end = rsvd_region[n].start + ia64_boot_param->initrd_size; 3731da177e4SLinus Torvalds n++; 3741da177e4SLinus Torvalds } 3751da177e4SLinus Torvalds #endif 3761da177e4SLinus Torvalds 37717c1f07eSJay Lan #ifdef CONFIG_CRASH_DUMP 378cee87af2SMagnus Damm if (reserve_elfcorehdr(&rsvd_region[n].start, 379cee87af2SMagnus Damm &rsvd_region[n].end) == 0) 380cee87af2SMagnus Damm n++; 381cee87af2SMagnus Damm #endif 382cee87af2SMagnus Damm 383cb380853SBernhard Walle total_memory = efi_memmap_init(&rsvd_region[n].start, &rsvd_region[n].end); 384d8c97d5fSTony Luck n++; 385d8c97d5fSTony Luck 386cb380853SBernhard Walle setup_crashkernel(total_memory, &n); 387cb380853SBernhard Walle 3881da177e4SLinus Torvalds /* end of memory marker */ 3891da177e4SLinus Torvalds rsvd_region[n].start = ~0UL; 3901da177e4SLinus Torvalds rsvd_region[n].end = ~0UL; 3911da177e4SLinus Torvalds n++; 3921da177e4SLinus Torvalds 3931da177e4SLinus Torvalds num_rsvd_regions = n; 3945eb1d63fSAlex Williamson BUG_ON(IA64_MAX_RSVD_REGIONS + 1 < n); 3951da177e4SLinus Torvalds 3961da177e4SLinus Torvalds sort_regions(rsvd_region, num_rsvd_regions); 39776d71ebdSPetr Tesarik num_rsvd_regions = merge_regions(rsvd_region, num_rsvd_regions); 3981da177e4SLinus Torvalds } 3991da177e4SLinus Torvalds 400a7956113SZou Nan hai 4011da177e4SLinus Torvalds /** 4021da177e4SLinus Torvalds * find_initrd - get initrd parameters from the boot parameter structure 4031da177e4SLinus Torvalds * 4041da177e4SLinus Torvalds * Grab the initrd start and end from the boot parameter struct given us by 4051da177e4SLinus Torvalds * the boot loader. 4061da177e4SLinus Torvalds */ 407dae28066SChen, Kenneth W void __init 4081da177e4SLinus Torvalds find_initrd (void) 4091da177e4SLinus Torvalds { 4101da177e4SLinus Torvalds #ifdef CONFIG_BLK_DEV_INITRD 4111da177e4SLinus Torvalds if (ia64_boot_param->initrd_start) { 4121da177e4SLinus Torvalds initrd_start = (unsigned long)__va(ia64_boot_param->initrd_start); 4131da177e4SLinus Torvalds initrd_end = initrd_start+ia64_boot_param->initrd_size; 4141da177e4SLinus Torvalds 415e088a4adSMatthew Wilcox printk(KERN_INFO "Initial ramdisk at: 0x%lx (%llu bytes)\n", 4161da177e4SLinus Torvalds initrd_start, ia64_boot_param->initrd_size); 4171da177e4SLinus Torvalds } 4181da177e4SLinus Torvalds #endif 4191da177e4SLinus Torvalds } 4201da177e4SLinus Torvalds 4211da177e4SLinus Torvalds static void __init 4221da177e4SLinus Torvalds io_port_init (void) 4231da177e4SLinus Torvalds { 4241da177e4SLinus Torvalds unsigned long phys_iobase; 4251da177e4SLinus Torvalds 4261da177e4SLinus Torvalds /* 42744c45120SBjorn Helgaas * Set `iobase' based on the EFI memory map or, failing that, the 42844c45120SBjorn Helgaas * value firmware left in ar.k0. 4291da177e4SLinus Torvalds * 43044c45120SBjorn Helgaas * Note that in ia32 mode, IN/OUT instructions use ar.k0 to compute 43144c45120SBjorn Helgaas * the port's virtual address, so ia32_load_state() loads it with a 43244c45120SBjorn Helgaas * user virtual address. But in ia64 mode, glibc uses the 43344c45120SBjorn Helgaas * *physical* address in ar.k0 to mmap the appropriate area from 43444c45120SBjorn Helgaas * /dev/mem, and the inX()/outX() interfaces use MMIO. In both 43544c45120SBjorn Helgaas * cases, user-mode can only use the legacy 0-64K I/O port space. 43644c45120SBjorn Helgaas * 43744c45120SBjorn Helgaas * ar.k0 is not involved in kernel I/O port accesses, which can use 43844c45120SBjorn Helgaas * any of the I/O port spaces and are done via MMIO using the 43944c45120SBjorn Helgaas * virtual mmio_base from the appropriate io_space[]. 4401da177e4SLinus Torvalds */ 4411da177e4SLinus Torvalds phys_iobase = efi_get_iobase(); 44244c45120SBjorn Helgaas if (!phys_iobase) { 4431da177e4SLinus Torvalds phys_iobase = ia64_get_kr(IA64_KR_IO_BASE); 44444c45120SBjorn Helgaas printk(KERN_INFO "No I/O port range found in EFI memory map, " 44544c45120SBjorn Helgaas "falling back to AR.KR0 (0x%lx)\n", phys_iobase); 4461da177e4SLinus Torvalds } 4471da177e4SLinus Torvalds ia64_iobase = (unsigned long) ioremap(phys_iobase, 0); 44844c45120SBjorn Helgaas ia64_set_kr(IA64_KR_IO_BASE, __pa(ia64_iobase)); 4491da177e4SLinus Torvalds 4501da177e4SLinus Torvalds /* setup legacy IO port space */ 4511da177e4SLinus Torvalds io_space[0].mmio_base = ia64_iobase; 4521da177e4SLinus Torvalds io_space[0].sparse = 1; 4531da177e4SLinus Torvalds num_io_spaces = 1; 4541da177e4SLinus Torvalds } 4551da177e4SLinus Torvalds 4561da177e4SLinus Torvalds /** 4571da177e4SLinus Torvalds * early_console_setup - setup debugging console 4581da177e4SLinus Torvalds * 4591da177e4SLinus Torvalds * Consoles started here require little enough setup that we can start using 4601da177e4SLinus Torvalds * them very early in the boot process, either right after the machine 4611da177e4SLinus Torvalds * vector initialization, or even before if the drivers can detect their hw. 4621da177e4SLinus Torvalds * 4631da177e4SLinus Torvalds * Returns non-zero if a console couldn't be setup. 4641da177e4SLinus Torvalds */ 4651da177e4SLinus Torvalds static inline int __init 4661da177e4SLinus Torvalds early_console_setup (char *cmdline) 4671da177e4SLinus Torvalds { 46866b7f8a3SMark Maule int earlycons = 0; 46966b7f8a3SMark Maule 4701da177e4SLinus Torvalds #ifdef CONFIG_SERIAL_SGI_L1_CONSOLE 4711da177e4SLinus Torvalds { 4721da177e4SLinus Torvalds extern int sn_serial_console_early_setup(void); 4731da177e4SLinus Torvalds if (!sn_serial_console_early_setup()) 47466b7f8a3SMark Maule earlycons++; 4751da177e4SLinus Torvalds } 4761da177e4SLinus Torvalds #endif 4771da177e4SLinus Torvalds #ifdef CONFIG_EFI_PCDP 4781da177e4SLinus Torvalds if (!efi_setup_pcdp_console(cmdline)) 47966b7f8a3SMark Maule earlycons++; 4801da177e4SLinus Torvalds #endif 4818b713c67SPeter Chubb if (!simcons_register()) 482471e7a44SPeter Chubb earlycons++; 4831da177e4SLinus Torvalds 48466b7f8a3SMark Maule return (earlycons) ? 0 : -1; 4851da177e4SLinus Torvalds } 4861da177e4SLinus Torvalds 4871da177e4SLinus Torvalds static inline void 4881da177e4SLinus Torvalds mark_bsp_online (void) 4891da177e4SLinus Torvalds { 4901da177e4SLinus Torvalds #ifdef CONFIG_SMP 4911da177e4SLinus Torvalds /* If we register an early console, allow CPU 0 to printk */ 4927d7f9848SSrivatsa S. Bhat set_cpu_online(smp_processor_id(), true); 4931da177e4SLinus Torvalds #endif 4941da177e4SLinus Torvalds } 4951da177e4SLinus Torvalds 496a5b00bb4SHorms static __initdata int nomca; 497a5b00bb4SHorms static __init int setup_nomca(char *s) 498a5b00bb4SHorms { 499a5b00bb4SHorms nomca = 1; 500a5b00bb4SHorms return 0; 501a5b00bb4SHorms } 502a5b00bb4SHorms early_param("nomca", setup_nomca); 503a5b00bb4SHorms 50457cac4d1SVivek Goyal #ifdef CONFIG_CRASH_DUMP 505e088a4adSMatthew Wilcox int __init reserve_elfcorehdr(u64 *start, u64 *end) 506cee87af2SMagnus Damm { 507e088a4adSMatthew Wilcox u64 length; 508cee87af2SMagnus Damm 509cee87af2SMagnus Damm /* We get the address using the kernel command line, 510cee87af2SMagnus Damm * but the size is extracted from the EFI tables. 511cee87af2SMagnus Damm * Both address and size are required for reservation 512cee87af2SMagnus Damm * to work properly. 513cee87af2SMagnus Damm */ 514cee87af2SMagnus Damm 51585a0ee34SSimon Horman if (!is_vmcore_usable()) 516cee87af2SMagnus Damm return -EINVAL; 517cee87af2SMagnus Damm 518cee87af2SMagnus Damm if ((length = vmcore_find_descriptor_size(elfcorehdr_addr)) == 0) { 51985a0ee34SSimon Horman vmcore_unusable(); 520cee87af2SMagnus Damm return -EINVAL; 521cee87af2SMagnus Damm } 522cee87af2SMagnus Damm 523cee87af2SMagnus Damm *start = (unsigned long)__va(elfcorehdr_addr); 524cee87af2SMagnus Damm *end = *start + length; 525cee87af2SMagnus Damm return 0; 526cee87af2SMagnus Damm } 527cee87af2SMagnus Damm 52845a98fc6SHorms #endif /* CONFIG_PROC_VMCORE */ 52945a98fc6SHorms 5301da177e4SLinus Torvalds void __init 5311da177e4SLinus Torvalds setup_arch (char **cmdline_p) 5321da177e4SLinus Torvalds { 5331da177e4SLinus Torvalds unw_init(); 5341da177e4SLinus Torvalds 5351da177e4SLinus Torvalds ia64_patch_vtop((u64) __start___vtop_patchlist, (u64) __end___vtop_patchlist); 5361da177e4SLinus Torvalds 5371da177e4SLinus Torvalds *cmdline_p = __va(ia64_boot_param->command_line); 538a8d91b84SAlon Bar-Lev strlcpy(boot_command_line, *cmdline_p, COMMAND_LINE_SIZE); 5391da177e4SLinus Torvalds 5401da177e4SLinus Torvalds efi_init(); 5411da177e4SLinus Torvalds io_port_init(); 5421da177e4SLinus Torvalds 5431da177e4SLinus Torvalds #ifdef CONFIG_IA64_GENERIC 544a07ee862SHorms /* machvec needs to be parsed from the command line 545a07ee862SHorms * before parse_early_param() is called to ensure 546a07ee862SHorms * that ia64_mv is initialised before any command line 547a07ee862SHorms * settings may cause console setup to occur 548a07ee862SHorms */ 549a07ee862SHorms machvec_init_from_cmdline(*cmdline_p); 5501da177e4SLinus Torvalds #endif 5511da177e4SLinus Torvalds 552a07ee862SHorms parse_early_param(); 553a07ee862SHorms 5541da177e4SLinus Torvalds if (early_console_setup(*cmdline_p) == 0) 5551da177e4SLinus Torvalds mark_bsp_online(); 5561da177e4SLinus Torvalds 557888ba6c6SLen Brown #ifdef CONFIG_ACPI 5581da177e4SLinus Torvalds /* Initialize the ACPI boot-time table parser */ 5591da177e4SLinus Torvalds acpi_table_init(); 56062ee0540SDoug Chapman early_acpi_boot_init(); 5611da177e4SLinus Torvalds # ifdef CONFIG_ACPI_NUMA 5621da177e4SLinus Torvalds acpi_numa_init(); 563312521d0SRobert Richter acpi_numa_fixup(); 56462ee0540SDoug Chapman # ifdef CONFIG_ACPI_HOTPLUG_CPU 56562ee0540SDoug Chapman prefill_possible_map(); 56662ee0540SDoug Chapman # endif 5675d2068daSRusty Russell per_cpu_scan_finalize((cpumask_weight(&early_cpu_possible_map) == 0 ? 5685d2068daSRusty Russell 32 : cpumask_weight(&early_cpu_possible_map)), 569dd4f0888STony Luck additional_cpus > 0 ? additional_cpus : 0); 5701da177e4SLinus Torvalds # endif 5711da177e4SLinus Torvalds #endif /* CONFIG_APCI_BOOT */ 5721da177e4SLinus Torvalds 57312cda817STejun Heo #ifdef CONFIG_SMP 57412cda817STejun Heo smp_build_cpu_map(); 57512cda817STejun Heo #endif 5761da177e4SLinus Torvalds find_memory(); 5771da177e4SLinus Torvalds 5781da177e4SLinus Torvalds /* process SAL system table: */ 579b2c99e3cSBjorn Helgaas ia64_sal_init(__va(efi.sal_systab)); 5801da177e4SLinus Torvalds 5814dcc29e1STony Luck #ifdef CONFIG_ITANIUM 5824dcc29e1STony Luck ia64_patch_rse((u64) __start___rse_patchlist, (u64) __end___rse_patchlist); 5834dcc29e1STony Luck #else 5844dcc29e1STony Luck { 585e088a4adSMatthew Wilcox unsigned long num_phys_stacked; 5864dcc29e1STony Luck 5874dcc29e1STony Luck if (ia64_pal_rse_info(&num_phys_stacked, 0) == 0 && num_phys_stacked > 96) 5884dcc29e1STony Luck ia64_patch_rse((u64) __start___rse_patchlist, (u64) __end___rse_patchlist); 5894dcc29e1STony Luck } 5904dcc29e1STony Luck #endif 5914dcc29e1STony Luck 5921da177e4SLinus Torvalds #ifdef CONFIG_SMP 5931da177e4SLinus Torvalds cpu_physical_id(0) = hard_smp_processor_id(); 5941da177e4SLinus Torvalds #endif 5951da177e4SLinus Torvalds 5961da177e4SLinus Torvalds cpu_init(); /* initialize the bootstrap CPU */ 597dcc17d1bSPeter Keilty mmu_context_init(); /* initialize context_id bitmap */ 5981da177e4SLinus Torvalds 5991da177e4SLinus Torvalds #ifdef CONFIG_VT 6001da177e4SLinus Torvalds if (!conswitchp) { 6011da177e4SLinus Torvalds # if defined(CONFIG_DUMMY_CONSOLE) 6021da177e4SLinus Torvalds conswitchp = &dummy_con; 6031da177e4SLinus Torvalds # endif 6041da177e4SLinus Torvalds # if defined(CONFIG_VGA_CONSOLE) 6051da177e4SLinus Torvalds /* 6061da177e4SLinus Torvalds * Non-legacy systems may route legacy VGA MMIO range to system 6071da177e4SLinus Torvalds * memory. vga_con probes the MMIO hole, so memory looks like 6081da177e4SLinus Torvalds * a VGA device to it. The EFI memory map can tell us if it's 6091da177e4SLinus Torvalds * memory so we can avoid this problem. 6101da177e4SLinus Torvalds */ 6111da177e4SLinus Torvalds if (efi_mem_type(0xA0000) != EFI_CONVENTIONAL_MEMORY) 6121da177e4SLinus Torvalds conswitchp = &vga_con; 6131da177e4SLinus Torvalds # endif 6141da177e4SLinus Torvalds } 6151da177e4SLinus Torvalds #endif 6161da177e4SLinus Torvalds 6171da177e4SLinus Torvalds /* enable IA-64 Machine Check Abort Handling unless disabled */ 618a5b00bb4SHorms if (!nomca) 6191da177e4SLinus Torvalds ia64_mca_init(); 6201da177e4SLinus Torvalds 6211da177e4SLinus Torvalds platform_setup(cmdline_p); 62206f95ea8SAlex Chiang #ifndef CONFIG_IA64_HP_SIM 6232826f8c0SJes Sorensen check_sal_cache_flush(); 62406f95ea8SAlex Chiang #endif 6251da177e4SLinus Torvalds paging_init(); 626acb04058SPeter Zijlstra 627acb04058SPeter Zijlstra clear_sched_clock_stable(); 6281da177e4SLinus Torvalds } 6291da177e4SLinus Torvalds 6301da177e4SLinus Torvalds /* 63172fdbdceSSimon Arlott * Display cpu info for all CPUs. 6321da177e4SLinus Torvalds */ 6331da177e4SLinus Torvalds static int 6341da177e4SLinus Torvalds show_cpuinfo (struct seq_file *m, void *v) 6351da177e4SLinus Torvalds { 6361da177e4SLinus Torvalds #ifdef CONFIG_SMP 6371da177e4SLinus Torvalds # define lpj c->loops_per_jiffy 6381da177e4SLinus Torvalds # define cpunum c->cpu 6391da177e4SLinus Torvalds #else 6401da177e4SLinus Torvalds # define lpj loops_per_jiffy 6411da177e4SLinus Torvalds # define cpunum 0 6421da177e4SLinus Torvalds #endif 6431da177e4SLinus Torvalds static struct { 6441da177e4SLinus Torvalds unsigned long mask; 6451da177e4SLinus Torvalds const char *feature_name; 6461da177e4SLinus Torvalds } feature_bits[] = { 6471da177e4SLinus Torvalds { 1UL << 0, "branchlong" }, 6481da177e4SLinus Torvalds { 1UL << 1, "spontaneous deferral"}, 6491da177e4SLinus Torvalds { 1UL << 2, "16-byte atomic ops" } 6501da177e4SLinus Torvalds }; 651ae0af3e3SAron Griffis char features[128], *cp, *sep; 6521da177e4SLinus Torvalds struct cpuinfo_ia64 *c = v; 6531da177e4SLinus Torvalds unsigned long mask; 65438c0b2c2STony Luck unsigned long proc_freq; 655ae0af3e3SAron Griffis int i, size; 6561da177e4SLinus Torvalds 6571da177e4SLinus Torvalds mask = c->features; 6581da177e4SLinus Torvalds 6591da177e4SLinus Torvalds /* build the feature string: */ 660ae0af3e3SAron Griffis memcpy(features, "standard", 9); 6611da177e4SLinus Torvalds cp = features; 662ae0af3e3SAron Griffis size = sizeof(features); 663ae0af3e3SAron Griffis sep = ""; 664ae0af3e3SAron Griffis for (i = 0; i < ARRAY_SIZE(feature_bits) && size > 1; ++i) { 6651da177e4SLinus Torvalds if (mask & feature_bits[i].mask) { 666ae0af3e3SAron Griffis cp += snprintf(cp, size, "%s%s", sep, 667ae0af3e3SAron Griffis feature_bits[i].feature_name), 668ae0af3e3SAron Griffis sep = ", "; 6691da177e4SLinus Torvalds mask &= ~feature_bits[i].mask; 670ae0af3e3SAron Griffis size = sizeof(features) - (cp - features); 6711da177e4SLinus Torvalds } 6721da177e4SLinus Torvalds } 673ae0af3e3SAron Griffis if (mask && size > 1) { 674ae0af3e3SAron Griffis /* print unknown features as a hex value */ 675ae0af3e3SAron Griffis snprintf(cp, size, "%s0x%lx", sep, mask); 6761da177e4SLinus Torvalds } 6771da177e4SLinus Torvalds 67895235ca2SVenkatesh Pallipadi proc_freq = cpufreq_quick_get(cpunum); 67995235ca2SVenkatesh Pallipadi if (!proc_freq) 68095235ca2SVenkatesh Pallipadi proc_freq = c->proc_freq / 1000; 68195235ca2SVenkatesh Pallipadi 6821da177e4SLinus Torvalds seq_printf(m, 6831da177e4SLinus Torvalds "processor : %d\n" 6841da177e4SLinus Torvalds "vendor : %s\n" 6851da177e4SLinus Torvalds "arch : IA-64\n" 68676d08bb3STony Luck "family : %u\n" 6871da177e4SLinus Torvalds "model : %u\n" 68876d08bb3STony Luck "model name : %s\n" 6891da177e4SLinus Torvalds "revision : %u\n" 6901da177e4SLinus Torvalds "archrev : %u\n" 691ae0af3e3SAron Griffis "features : %s\n" 6921da177e4SLinus Torvalds "cpu number : %lu\n" 6931da177e4SLinus Torvalds "cpu regs : %u\n" 6948a3a78d1SVenki Pallipadi "cpu MHz : %lu.%03lu\n" 6951da177e4SLinus Torvalds "itc MHz : %lu.%06lu\n" 696e927ecb0SSuresh Siddha "BogoMIPS : %lu.%02lu\n", 69776d08bb3STony Luck cpunum, c->vendor, c->family, c->model, 69876d08bb3STony Luck c->model_name, c->revision, c->archrev, 6991da177e4SLinus Torvalds features, c->ppn, c->number, 70095235ca2SVenkatesh Pallipadi proc_freq / 1000, proc_freq % 1000, 7011da177e4SLinus Torvalds c->itc_freq / 1000000, c->itc_freq % 1000000, 7021da177e4SLinus Torvalds lpj*HZ/500000, (lpj*HZ/5000) % 100); 703e927ecb0SSuresh Siddha #ifdef CONFIG_SMP 7045d2068daSRusty Russell seq_printf(m, "siblings : %u\n", 7055d2068daSRusty Russell cpumask_weight(&cpu_core_map[cpunum])); 706113134fcSAlex Chiang if (c->socket_id != -1) 707113134fcSAlex Chiang seq_printf(m, "physical id: %u\n", c->socket_id); 708e927ecb0SSuresh Siddha if (c->threads_per_core > 1 || c->cores_per_socket > 1) 709e927ecb0SSuresh Siddha seq_printf(m, 710e927ecb0SSuresh Siddha "core id : %u\n" 711e927ecb0SSuresh Siddha "thread id : %u\n", 712113134fcSAlex Chiang c->core_id, c->thread_id); 713e927ecb0SSuresh Siddha #endif 714e927ecb0SSuresh Siddha seq_printf(m,"\n"); 715e927ecb0SSuresh Siddha 7161da177e4SLinus Torvalds return 0; 7171da177e4SLinus Torvalds } 7181da177e4SLinus Torvalds 7191da177e4SLinus Torvalds static void * 7201da177e4SLinus Torvalds c_start (struct seq_file *m, loff_t *pos) 7211da177e4SLinus Torvalds { 7221da177e4SLinus Torvalds #ifdef CONFIG_SMP 7235dd3c994SRusty Russell while (*pos < nr_cpu_ids && !cpu_online(*pos)) 7241da177e4SLinus Torvalds ++*pos; 7251da177e4SLinus Torvalds #endif 7265dd3c994SRusty Russell return *pos < nr_cpu_ids ? cpu_data(*pos) : NULL; 7271da177e4SLinus Torvalds } 7281da177e4SLinus Torvalds 7291da177e4SLinus Torvalds static void * 7301da177e4SLinus Torvalds c_next (struct seq_file *m, void *v, loff_t *pos) 7311da177e4SLinus Torvalds { 7321da177e4SLinus Torvalds ++*pos; 7331da177e4SLinus Torvalds return c_start(m, pos); 7341da177e4SLinus Torvalds } 7351da177e4SLinus Torvalds 7361da177e4SLinus Torvalds static void 7371da177e4SLinus Torvalds c_stop (struct seq_file *m, void *v) 7381da177e4SLinus Torvalds { 7391da177e4SLinus Torvalds } 7401da177e4SLinus Torvalds 741a23fe55eSJan Engelhardt const struct seq_operations cpuinfo_op = { 7421da177e4SLinus Torvalds .start = c_start, 7431da177e4SLinus Torvalds .next = c_next, 7441da177e4SLinus Torvalds .stop = c_stop, 7451da177e4SLinus Torvalds .show = show_cpuinfo 7461da177e4SLinus Torvalds }; 7471da177e4SLinus Torvalds 748c5e83e3fSJack Steiner #define MAX_BRANDS 8 749c5e83e3fSJack Steiner static char brandname[MAX_BRANDS][128]; 75076d08bb3STony Luck 751ccce9bb8SPaul Gortmaker static char * 75276d08bb3STony Luck get_model_name(__u8 family, __u8 model) 75376d08bb3STony Luck { 754c5e83e3fSJack Steiner static int overflow; 75576d08bb3STony Luck char brand[128]; 756c5e83e3fSJack Steiner int i; 75776d08bb3STony Luck 75875f6a1deSTony Luck memcpy(brand, "Unknown", 8); 75976d08bb3STony Luck if (ia64_pal_get_brand_info(brand)) { 76076d08bb3STony Luck if (family == 0x7) 76176d08bb3STony Luck memcpy(brand, "Merced", 7); 76276d08bb3STony Luck else if (family == 0x1f) switch (model) { 76376d08bb3STony Luck case 0: memcpy(brand, "McKinley", 9); break; 76476d08bb3STony Luck case 1: memcpy(brand, "Madison", 8); break; 76576d08bb3STony Luck case 2: memcpy(brand, "Madison up to 9M cache", 23); break; 76675f6a1deSTony Luck } 76776d08bb3STony Luck } 768c5e83e3fSJack Steiner for (i = 0; i < MAX_BRANDS; i++) 769c5e83e3fSJack Steiner if (strcmp(brandname[i], brand) == 0) 770c5e83e3fSJack Steiner return brandname[i]; 771c5e83e3fSJack Steiner for (i = 0; i < MAX_BRANDS; i++) 772c5e83e3fSJack Steiner if (brandname[i][0] == '\0') 773c5e83e3fSJack Steiner return strcpy(brandname[i], brand); 774c5e83e3fSJack Steiner if (overflow++ == 0) 775c5e83e3fSJack Steiner printk(KERN_ERR 776c5e83e3fSJack Steiner "%s: Table overflow. Some processor model information will be missing\n", 777d4ed8084SHarvey Harrison __func__); 778c5e83e3fSJack Steiner return "Unknown"; 77976d08bb3STony Luck } 78076d08bb3STony Luck 781ccce9bb8SPaul Gortmaker static void 7821da177e4SLinus Torvalds identify_cpu (struct cpuinfo_ia64 *c) 7831da177e4SLinus Torvalds { 7841da177e4SLinus Torvalds union { 7851da177e4SLinus Torvalds unsigned long bits[5]; 7861da177e4SLinus Torvalds struct { 7871da177e4SLinus Torvalds /* id 0 & 1: */ 7881da177e4SLinus Torvalds char vendor[16]; 7891da177e4SLinus Torvalds 7901da177e4SLinus Torvalds /* id 2 */ 7911da177e4SLinus Torvalds u64 ppn; /* processor serial number */ 7921da177e4SLinus Torvalds 7931da177e4SLinus Torvalds /* id 3: */ 7941da177e4SLinus Torvalds unsigned number : 8; 7951da177e4SLinus Torvalds unsigned revision : 8; 7961da177e4SLinus Torvalds unsigned model : 8; 7971da177e4SLinus Torvalds unsigned family : 8; 7981da177e4SLinus Torvalds unsigned archrev : 8; 7991da177e4SLinus Torvalds unsigned reserved : 24; 8001da177e4SLinus Torvalds 8011da177e4SLinus Torvalds /* id 4: */ 8021da177e4SLinus Torvalds u64 features; 8031da177e4SLinus Torvalds } field; 8041da177e4SLinus Torvalds } cpuid; 8051da177e4SLinus Torvalds pal_vm_info_1_u_t vm1; 8061da177e4SLinus Torvalds pal_vm_info_2_u_t vm2; 8071da177e4SLinus Torvalds pal_status_t status; 8081da177e4SLinus Torvalds unsigned long impl_va_msb = 50, phys_addr_size = 44; /* Itanium defaults */ 8091da177e4SLinus Torvalds int i; 8101da177e4SLinus Torvalds for (i = 0; i < 5; ++i) 8111da177e4SLinus Torvalds cpuid.bits[i] = ia64_get_cpuid(i); 8121da177e4SLinus Torvalds 8131da177e4SLinus Torvalds memcpy(c->vendor, cpuid.field.vendor, 16); 8141da177e4SLinus Torvalds #ifdef CONFIG_SMP 8151da177e4SLinus Torvalds c->cpu = smp_processor_id(); 816e927ecb0SSuresh Siddha 817e927ecb0SSuresh Siddha /* below default values will be overwritten by identify_siblings() 81872fdbdceSSimon Arlott * for Multi-Threading/Multi-Core capable CPUs 819e927ecb0SSuresh Siddha */ 820e927ecb0SSuresh Siddha c->threads_per_core = c->cores_per_socket = c->num_log = 1; 821e927ecb0SSuresh Siddha c->socket_id = -1; 822e927ecb0SSuresh Siddha 823e927ecb0SSuresh Siddha identify_siblings(c); 824113134fcSAlex Chiang 825113134fcSAlex Chiang if (c->threads_per_core > smp_num_siblings) 826113134fcSAlex Chiang smp_num_siblings = c->threads_per_core; 8271da177e4SLinus Torvalds #endif 8281da177e4SLinus Torvalds c->ppn = cpuid.field.ppn; 8291da177e4SLinus Torvalds c->number = cpuid.field.number; 8301da177e4SLinus Torvalds c->revision = cpuid.field.revision; 8311da177e4SLinus Torvalds c->model = cpuid.field.model; 8321da177e4SLinus Torvalds c->family = cpuid.field.family; 8331da177e4SLinus Torvalds c->archrev = cpuid.field.archrev; 8341da177e4SLinus Torvalds c->features = cpuid.field.features; 83576d08bb3STony Luck c->model_name = get_model_name(c->family, c->model); 8361da177e4SLinus Torvalds 8371da177e4SLinus Torvalds status = ia64_pal_vm_summary(&vm1, &vm2); 8381da177e4SLinus Torvalds if (status == PAL_STATUS_SUCCESS) { 8391da177e4SLinus Torvalds impl_va_msb = vm2.pal_vm_info_2_s.impl_va_msb; 8401da177e4SLinus Torvalds phys_addr_size = vm1.pal_vm_info_1_s.phys_add_size; 8411da177e4SLinus Torvalds } 8421da177e4SLinus Torvalds c->unimpl_va_mask = ~((7L<<61) | ((1L << (impl_va_msb + 1)) - 1)); 8431da177e4SLinus Torvalds c->unimpl_pa_mask = ~((1L<<63) | ((1L << phys_addr_size) - 1)); 8441da177e4SLinus Torvalds } 8451da177e4SLinus Torvalds 846872fb6ddSFenghua Yu /* 84762fdd767SFenghua Yu * Do the following calculations: 84808357f82SZoltan Menyhart * 84962fdd767SFenghua Yu * 1. the max. cache line size. 85062fdd767SFenghua Yu * 2. the minimum of the i-cache stride sizes for "flush_icache_range()". 85162fdd767SFenghua Yu * 3. the minimum of the cache stride sizes for "clflush_cache_range()". 85208357f82SZoltan Menyhart */ 853ccce9bb8SPaul Gortmaker static void 85462fdd767SFenghua Yu get_cache_info(void) 8551da177e4SLinus Torvalds { 8561da177e4SLinus Torvalds unsigned long line_size, max = 1; 857e088a4adSMatthew Wilcox unsigned long l, levels, unique_caches; 8581da177e4SLinus Torvalds pal_cache_config_info_t cci; 859e088a4adSMatthew Wilcox long status; 8601da177e4SLinus Torvalds 8611da177e4SLinus Torvalds status = ia64_pal_cache_summary(&levels, &unique_caches); 8621da177e4SLinus Torvalds if (status != 0) { 8631da177e4SLinus Torvalds printk(KERN_ERR "%s: ia64_pal_cache_summary() failed (status=%ld)\n", 864d4ed8084SHarvey Harrison __func__, status); 8651da177e4SLinus Torvalds max = SMP_CACHE_BYTES; 86608357f82SZoltan Menyhart /* Safest setup for "flush_icache_range()" */ 86708357f82SZoltan Menyhart ia64_i_cache_stride_shift = I_CACHE_STRIDE_SHIFT; 86862fdd767SFenghua Yu /* Safest setup for "clflush_cache_range()" */ 86962fdd767SFenghua Yu ia64_cache_stride_shift = CACHE_STRIDE_SHIFT; 8701da177e4SLinus Torvalds goto out; 8711da177e4SLinus Torvalds } 8721da177e4SLinus Torvalds 8731da177e4SLinus Torvalds for (l = 0; l < levels; ++l) { 87462fdd767SFenghua Yu /* cache_type (data_or_unified)=2 */ 87562fdd767SFenghua Yu status = ia64_pal_cache_config_info(l, 2, &cci); 8761da177e4SLinus Torvalds if (status != 0) { 877e088a4adSMatthew Wilcox printk(KERN_ERR "%s: ia64_pal_cache_config_info" 878e088a4adSMatthew Wilcox "(l=%lu, 2) failed (status=%ld)\n", 879d4ed8084SHarvey Harrison __func__, l, status); 8801da177e4SLinus Torvalds max = SMP_CACHE_BYTES; 88108357f82SZoltan Menyhart /* The safest setup for "flush_icache_range()" */ 88208357f82SZoltan Menyhart cci.pcci_stride = I_CACHE_STRIDE_SHIFT; 88362fdd767SFenghua Yu /* The safest setup for "clflush_cache_range()" */ 88462fdd767SFenghua Yu ia64_cache_stride_shift = CACHE_STRIDE_SHIFT; 88508357f82SZoltan Menyhart cci.pcci_unified = 1; 88662fdd767SFenghua Yu } else { 88762fdd767SFenghua Yu if (cci.pcci_stride < ia64_cache_stride_shift) 88862fdd767SFenghua Yu ia64_cache_stride_shift = cci.pcci_stride; 88962fdd767SFenghua Yu 8901da177e4SLinus Torvalds line_size = 1 << cci.pcci_line_size; 8911da177e4SLinus Torvalds if (line_size > max) 8921da177e4SLinus Torvalds max = line_size; 89362fdd767SFenghua Yu } 89462fdd767SFenghua Yu 89508357f82SZoltan Menyhart if (!cci.pcci_unified) { 89662fdd767SFenghua Yu /* cache_type (instruction)=1*/ 89762fdd767SFenghua Yu status = ia64_pal_cache_config_info(l, 1, &cci); 89808357f82SZoltan Menyhart if (status != 0) { 899e088a4adSMatthew Wilcox printk(KERN_ERR "%s: ia64_pal_cache_config_info" 900e088a4adSMatthew Wilcox "(l=%lu, 1) failed (status=%ld)\n", 901d4ed8084SHarvey Harrison __func__, l, status); 902e088a4adSMatthew Wilcox /* The safest setup for flush_icache_range() */ 90308357f82SZoltan Menyhart cci.pcci_stride = I_CACHE_STRIDE_SHIFT; 90408357f82SZoltan Menyhart } 90508357f82SZoltan Menyhart } 90608357f82SZoltan Menyhart if (cci.pcci_stride < ia64_i_cache_stride_shift) 90708357f82SZoltan Menyhart ia64_i_cache_stride_shift = cci.pcci_stride; 9081da177e4SLinus Torvalds } 9091da177e4SLinus Torvalds out: 9101da177e4SLinus Torvalds if (max > ia64_max_cacheline_size) 9111da177e4SLinus Torvalds ia64_max_cacheline_size = max; 9121da177e4SLinus Torvalds } 9131da177e4SLinus Torvalds 9141da177e4SLinus Torvalds /* 9151da177e4SLinus Torvalds * cpu_init() initializes state that is per-CPU. This function acts 9161da177e4SLinus Torvalds * as a 'CPU state barrier', nothing should get across. 9171da177e4SLinus Torvalds */ 918ccce9bb8SPaul Gortmaker void 9191da177e4SLinus Torvalds cpu_init (void) 9201da177e4SLinus Torvalds { 921ccce9bb8SPaul Gortmaker extern void ia64_mmu_init(void *); 922a0776ec8SChen, Kenneth W static unsigned long max_num_phys_stacked = IA64_NUM_PHYS_STACK_REG; 9231da177e4SLinus Torvalds unsigned long num_phys_stacked; 9241da177e4SLinus Torvalds pal_vm_info_2_u_t vmi; 9251da177e4SLinus Torvalds unsigned int max_ctx; 9261da177e4SLinus Torvalds struct cpuinfo_ia64 *cpu_info; 9271da177e4SLinus Torvalds void *cpu_data; 9281da177e4SLinus Torvalds 9291da177e4SLinus Torvalds cpu_data = per_cpu_init(); 9304d1efed5STony Luck #ifdef CONFIG_SMP 931d5a7430dSMike Travis /* 932d5a7430dSMike Travis * insert boot cpu into sibling and core mapes 933d5a7430dSMike Travis * (must be done after per_cpu area is setup) 934d5a7430dSMike Travis */ 935d5a7430dSMike Travis if (smp_processor_id() == 0) { 9365d2068daSRusty Russell cpumask_set_cpu(0, &per_cpu(cpu_sibling_map, 0)); 9375d2068daSRusty Russell cpumask_set_cpu(0, &cpu_core_map[0]); 93810617bbeSTony Luck } else { 9391da177e4SLinus Torvalds /* 94010617bbeSTony Luck * Set ar.k3 so that assembly code in MCA handler can compute 9411da177e4SLinus Torvalds * physical addresses of per cpu variables with a simple: 9421da177e4SLinus Torvalds * phys = ar.k3 + &per_cpu_var 94310617bbeSTony Luck * and the alt-dtlb-miss handler can set per-cpu mapping into 94410617bbeSTony Luck * the TLB when needed. head.S already did this for cpu0. 9451da177e4SLinus Torvalds */ 9461da177e4SLinus Torvalds ia64_set_kr(IA64_KR_PER_CPU_DATA, 9471da177e4SLinus Torvalds ia64_tpa(cpu_data) - (long) __per_cpu_start); 94810617bbeSTony Luck } 94910617bbeSTony Luck #endif 9501da177e4SLinus Torvalds 95162fdd767SFenghua Yu get_cache_info(); 9521da177e4SLinus Torvalds 9531da177e4SLinus Torvalds /* 9541da177e4SLinus Torvalds * We can't pass "local_cpu_data" to identify_cpu() because we haven't called 9551da177e4SLinus Torvalds * ia64_mmu_init() yet. And we can't call ia64_mmu_init() first because it 9561da177e4SLinus Torvalds * depends on the data returned by identify_cpu(). We break the dependency by 9571da177e4SLinus Torvalds * accessing cpu_data() through the canonical per-CPU address. 9581da177e4SLinus Torvalds */ 959877105ccSTejun Heo cpu_info = cpu_data + ((char *) &__ia64_per_cpu_var(ia64_cpu_info) - __per_cpu_start); 9601da177e4SLinus Torvalds identify_cpu(cpu_info); 9611da177e4SLinus Torvalds 9621da177e4SLinus Torvalds #ifdef CONFIG_MCKINLEY 9631da177e4SLinus Torvalds { 9641da177e4SLinus Torvalds # define FEATURE_SET 16 9651da177e4SLinus Torvalds struct ia64_pal_retval iprv; 9661da177e4SLinus Torvalds 9671da177e4SLinus Torvalds if (cpu_info->family == 0x1f) { 9681da177e4SLinus Torvalds PAL_CALL_PHYS(iprv, PAL_PROC_GET_FEATURES, 0, FEATURE_SET, 0); 9691da177e4SLinus Torvalds if ((iprv.status == 0) && (iprv.v0 & 0x80) && (iprv.v2 & 0x80)) 9701da177e4SLinus Torvalds PAL_CALL_PHYS(iprv, PAL_PROC_SET_FEATURES, 9711da177e4SLinus Torvalds (iprv.v1 | 0x80), FEATURE_SET, 0); 9721da177e4SLinus Torvalds } 9731da177e4SLinus Torvalds } 9741da177e4SLinus Torvalds #endif 9751da177e4SLinus Torvalds 9761da177e4SLinus Torvalds /* Clear the stack memory reserved for pt_regs: */ 9776450578fSAl Viro memset(task_pt_regs(current), 0, sizeof(struct pt_regs)); 9781da177e4SLinus Torvalds 9791da177e4SLinus Torvalds ia64_set_kr(IA64_KR_FPU_OWNER, 0); 9801da177e4SLinus Torvalds 9811da177e4SLinus Torvalds /* 9821da177e4SLinus Torvalds * Initialize the page-table base register to a global 9831da177e4SLinus Torvalds * directory with all zeroes. This ensure that we can handle 9841da177e4SLinus Torvalds * TLB-misses to user address-space even before we created the 9851da177e4SLinus Torvalds * first user address-space. This may happen, e.g., due to 9861da177e4SLinus Torvalds * aggressive use of lfetch.fault. 9871da177e4SLinus Torvalds */ 9881da177e4SLinus Torvalds ia64_set_kr(IA64_KR_PT_BASE, __pa(ia64_imva(empty_zero_page))); 9891da177e4SLinus Torvalds 9901da177e4SLinus Torvalds /* 99186ebacd3STony Luck * Initialize default control register to defer speculative faults except 99286ebacd3STony Luck * for those arising from TLB misses, which are not deferred. The 9931da177e4SLinus Torvalds * kernel MUST NOT depend on a particular setting of these bits (in other words, 9941da177e4SLinus Torvalds * the kernel must have recovery code for all speculative accesses). Turn on 9951da177e4SLinus Torvalds * dcr.lc as per recommendation by the architecture team. Most IA-32 apps 9961da177e4SLinus Torvalds * shouldn't be affected by this (moral: keep your ia32 locks aligned and you'll 9971da177e4SLinus Torvalds * be fine). 9981da177e4SLinus Torvalds */ 9991da177e4SLinus Torvalds ia64_setreg(_IA64_REG_CR_DCR, ( IA64_DCR_DP | IA64_DCR_DK | IA64_DCR_DX | IA64_DCR_DR 10001da177e4SLinus Torvalds | IA64_DCR_DA | IA64_DCR_DD | IA64_DCR_LC)); 1001f1f10076SVegard Nossum mmgrab(&init_mm); 10021da177e4SLinus Torvalds current->active_mm = &init_mm; 100380a03e29SStoyan Gaydarov BUG_ON(current->mm); 10041da177e4SLinus Torvalds 10051da177e4SLinus Torvalds ia64_mmu_init(ia64_imva(cpu_data)); 10061da177e4SLinus Torvalds ia64_mca_cpu_init(ia64_imva(cpu_data)); 10071da177e4SLinus Torvalds 100872fdbdceSSimon Arlott /* Clear ITC to eliminate sched_clock() overflows in human time. */ 10091da177e4SLinus Torvalds ia64_set_itc(0); 10101da177e4SLinus Torvalds 10111da177e4SLinus Torvalds /* disable all local interrupt sources: */ 10121da177e4SLinus Torvalds ia64_set_itv(1 << 16); 10131da177e4SLinus Torvalds ia64_set_lrr0(1 << 16); 10141da177e4SLinus Torvalds ia64_set_lrr1(1 << 16); 10151da177e4SLinus Torvalds ia64_setreg(_IA64_REG_CR_PMV, 1 << 16); 10161da177e4SLinus Torvalds ia64_setreg(_IA64_REG_CR_CMCV, 1 << 16); 10171da177e4SLinus Torvalds 10181da177e4SLinus Torvalds /* clear TPR & XTP to enable all interrupt classes: */ 10191da177e4SLinus Torvalds ia64_setreg(_IA64_REG_CR_TPR, 0); 1020f740e6c9SKenji Kaneshige 1021f740e6c9SKenji Kaneshige /* Clear any pending interrupts left by SAL/EFI */ 1022f740e6c9SKenji Kaneshige while (ia64_get_ivr() != IA64_SPURIOUS_INT_VECTOR) 1023f740e6c9SKenji Kaneshige ia64_eoi(); 1024f740e6c9SKenji Kaneshige 10251da177e4SLinus Torvalds #ifdef CONFIG_SMP 10261da177e4SLinus Torvalds normal_xtp(); 10271da177e4SLinus Torvalds #endif 10281da177e4SLinus Torvalds 10291da177e4SLinus Torvalds /* set ia64_ctx.max_rid to the maximum RID that is supported by all CPUs: */ 10302046b94eSFenghua Yu if (ia64_pal_vm_summary(NULL, &vmi) == 0) { 10311da177e4SLinus Torvalds max_ctx = (1U << (vmi.pal_vm_info_2_s.rid_size - 3)) - 1; 1032a6c75b86SFenghua Yu setup_ptcg_sem(vmi.pal_vm_info_2_s.max_purges, NPTCG_FROM_PAL); 10332046b94eSFenghua Yu } else { 10341da177e4SLinus Torvalds printk(KERN_WARNING "cpu_init: PAL VM summary failed, assuming 18 RID bits\n"); 10351da177e4SLinus Torvalds max_ctx = (1U << 15) - 1; /* use architected minimum */ 10361da177e4SLinus Torvalds } 10371da177e4SLinus Torvalds while (max_ctx < ia64_ctx.max_ctx) { 10381da177e4SLinus Torvalds unsigned int old = ia64_ctx.max_ctx; 10391da177e4SLinus Torvalds if (cmpxchg(&ia64_ctx.max_ctx, old, max_ctx) == old) 10401da177e4SLinus Torvalds break; 10411da177e4SLinus Torvalds } 10421da177e4SLinus Torvalds 10431da177e4SLinus Torvalds if (ia64_pal_rse_info(&num_phys_stacked, NULL) != 0) { 10441da177e4SLinus Torvalds printk(KERN_WARNING "cpu_init: PAL RSE info failed; assuming 96 physical " 10451da177e4SLinus Torvalds "stacked regs\n"); 10461da177e4SLinus Torvalds num_phys_stacked = 96; 10471da177e4SLinus Torvalds } 10481da177e4SLinus Torvalds /* size of physical stacked register partition plus 8 bytes: */ 1049a0776ec8SChen, Kenneth W if (num_phys_stacked > max_num_phys_stacked) { 1050a0776ec8SChen, Kenneth W ia64_patch_phys_stack_reg(num_phys_stacked*8 + 8); 1051a0776ec8SChen, Kenneth W max_num_phys_stacked = num_phys_stacked; 1052a0776ec8SChen, Kenneth W } 10531da177e4SLinus Torvalds platform_cpu_init(); 10541da177e4SLinus Torvalds } 10551da177e4SLinus Torvalds 1056244fd545SChen, Kenneth W void __init 10571da177e4SLinus Torvalds check_bugs (void) 10581da177e4SLinus Torvalds { 10591da177e4SLinus Torvalds ia64_patch_mckinley_e9((unsigned long) __start___mckinley_e9_bundles, 10601da177e4SLinus Torvalds (unsigned long) __end___mckinley_e9_bundles); 10611da177e4SLinus Torvalds } 10623ed3bce8SMatt Domsch 10633ed3bce8SMatt Domsch static int __init run_dmi_scan(void) 10643ed3bce8SMatt Domsch { 10653ed3bce8SMatt Domsch dmi_scan_machine(); 1066dd6dad42SChen, Gong dmi_memdev_walk(); 106798e5e1bfSTejun Heo dmi_set_dump_stack_arch_desc(); 10683ed3bce8SMatt Domsch return 0; 10693ed3bce8SMatt Domsch } 10703ed3bce8SMatt Domsch core_initcall(run_dmi_scan); 1071