11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds * Architecture-specific setup. 31da177e4SLinus Torvalds * 41da177e4SLinus Torvalds * Copyright (C) 1998-2001, 2003-2004 Hewlett-Packard Co 51da177e4SLinus Torvalds * David Mosberger-Tang <davidm@hpl.hp.com> 61da177e4SLinus Torvalds * Stephane Eranian <eranian@hpl.hp.com> 7e927ecb0SSuresh Siddha * Copyright (C) 2000, 2004 Intel Corp 8e927ecb0SSuresh Siddha * Rohit Seth <rohit.seth@intel.com> 9e927ecb0SSuresh Siddha * Suresh Siddha <suresh.b.siddha@intel.com> 10e927ecb0SSuresh Siddha * Gordon Jin <gordon.jin@intel.com> 111da177e4SLinus Torvalds * Copyright (C) 1999 VA Linux Systems 121da177e4SLinus Torvalds * Copyright (C) 1999 Walt Drummond <drummond@valinux.com> 131da177e4SLinus Torvalds * 14e927ecb0SSuresh Siddha * 12/26/04 S.Siddha, G.Jin, R.Seth 15e927ecb0SSuresh Siddha * Add multi-threading and multi-core detection 161da177e4SLinus Torvalds * 11/12/01 D.Mosberger Convert get_cpuinfo() to seq_file based show_cpuinfo(). 171da177e4SLinus Torvalds * 04/04/00 D.Mosberger renamed cpu_initialized to cpu_online_map 181da177e4SLinus Torvalds * 03/31/00 R.Seth cpu_initialized and current->processor fixes 191da177e4SLinus Torvalds * 02/04/00 D.Mosberger some more get_cpuinfo fixes... 201da177e4SLinus Torvalds * 02/01/00 R.Seth fixed get_cpuinfo for SMP 211da177e4SLinus Torvalds * 01/07/99 S.Eranian added the support for command line argument 221da177e4SLinus Torvalds * 06/24/99 W.Drummond added boot_cpu_data. 2308357f82SZoltan Menyhart * 05/28/05 Z. Menyhart Dynamic stride size for "flush_icache_range()" 241da177e4SLinus Torvalds */ 251da177e4SLinus Torvalds #include <linux/config.h> 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> 331da177e4SLinus Torvalds #include <linux/kernel.h> 341da177e4SLinus Torvalds #include <linux/reboot.h> 351da177e4SLinus Torvalds #include <linux/sched.h> 361da177e4SLinus Torvalds #include <linux/seq_file.h> 371da177e4SLinus Torvalds #include <linux/string.h> 381da177e4SLinus Torvalds #include <linux/threads.h> 391da177e4SLinus Torvalds #include <linux/tty.h> 401da177e4SLinus Torvalds #include <linux/serial.h> 411da177e4SLinus Torvalds #include <linux/serial_core.h> 421da177e4SLinus Torvalds #include <linux/efi.h> 431da177e4SLinus Torvalds #include <linux/initrd.h> 446c4fa560SVenkatesh Pallipadi #include <linux/platform.h> 456c4fa560SVenkatesh Pallipadi #include <linux/pm.h> 461da177e4SLinus Torvalds 471da177e4SLinus Torvalds #include <asm/ia32.h> 481da177e4SLinus Torvalds #include <asm/machvec.h> 491da177e4SLinus Torvalds #include <asm/mca.h> 501da177e4SLinus Torvalds #include <asm/meminit.h> 511da177e4SLinus Torvalds #include <asm/page.h> 521da177e4SLinus Torvalds #include <asm/patch.h> 531da177e4SLinus Torvalds #include <asm/pgtable.h> 541da177e4SLinus Torvalds #include <asm/processor.h> 551da177e4SLinus Torvalds #include <asm/sal.h> 561da177e4SLinus Torvalds #include <asm/sections.h> 571da177e4SLinus Torvalds #include <asm/serial.h> 581da177e4SLinus Torvalds #include <asm/setup.h> 591da177e4SLinus Torvalds #include <asm/smp.h> 601da177e4SLinus Torvalds #include <asm/system.h> 611da177e4SLinus Torvalds #include <asm/unistd.h> 621da177e4SLinus Torvalds 631da177e4SLinus Torvalds #if defined(CONFIG_SMP) && (IA64_CPU_SIZE > PAGE_SIZE) 641da177e4SLinus Torvalds # error "struct cpuinfo_ia64 too big!" 651da177e4SLinus Torvalds #endif 661da177e4SLinus Torvalds 671da177e4SLinus Torvalds #ifdef CONFIG_SMP 681da177e4SLinus Torvalds unsigned long __per_cpu_offset[NR_CPUS]; 691da177e4SLinus Torvalds EXPORT_SYMBOL(__per_cpu_offset); 701da177e4SLinus Torvalds #endif 711da177e4SLinus Torvalds 721da177e4SLinus Torvalds DEFINE_PER_CPU(struct cpuinfo_ia64, cpu_info); 731da177e4SLinus Torvalds DEFINE_PER_CPU(unsigned long, local_per_cpu_offset); 741da177e4SLinus Torvalds DEFINE_PER_CPU(unsigned long, ia64_phys_stacked_size_p8); 751da177e4SLinus Torvalds unsigned long ia64_cycles_per_usec; 761da177e4SLinus Torvalds struct ia64_boot_param *ia64_boot_param; 771da177e4SLinus Torvalds struct screen_info screen_info; 7866b7f8a3SMark Maule unsigned long vga_console_iobase; 7966b7f8a3SMark Maule unsigned long vga_console_membase; 801da177e4SLinus Torvalds 81be379124SKhalid Aziz static struct resource data_resource = { 82be379124SKhalid Aziz .name = "Kernel data", 83be379124SKhalid Aziz .flags = IORESOURCE_BUSY | IORESOURCE_MEM 84be379124SKhalid Aziz }; 85be379124SKhalid Aziz 86be379124SKhalid Aziz static struct resource code_resource = { 87be379124SKhalid Aziz .name = "Kernel code", 88be379124SKhalid Aziz .flags = IORESOURCE_BUSY | IORESOURCE_MEM 89be379124SKhalid Aziz }; 90be379124SKhalid Aziz extern void efi_initialize_iomem_resources(struct resource *, 91be379124SKhalid Aziz struct resource *); 92d719948eSTony Luck extern char _text[], _end[], _etext[]; 93be379124SKhalid Aziz 941da177e4SLinus Torvalds unsigned long ia64_max_cacheline_size; 951da177e4SLinus Torvalds unsigned long ia64_iobase; /* virtual address for I/O accesses */ 961da177e4SLinus Torvalds EXPORT_SYMBOL(ia64_iobase); 971da177e4SLinus Torvalds struct io_space io_space[MAX_IO_SPACES]; 981da177e4SLinus Torvalds EXPORT_SYMBOL(io_space); 991da177e4SLinus Torvalds unsigned int num_io_spaces; 1001da177e4SLinus Torvalds 1011da177e4SLinus Torvalds /* 10208357f82SZoltan Menyhart * "flush_icache_range()" needs to know what processor dependent stride size to use 10308357f82SZoltan Menyhart * when it makes i-cache(s) coherent with d-caches. 10408357f82SZoltan Menyhart */ 10508357f82SZoltan Menyhart #define I_CACHE_STRIDE_SHIFT 5 /* Safest way to go: 32 bytes by 32 bytes */ 10608357f82SZoltan Menyhart unsigned long ia64_i_cache_stride_shift = ~0; 10708357f82SZoltan Menyhart 10808357f82SZoltan Menyhart /* 1091da177e4SLinus Torvalds * The merge_mask variable needs to be set to (max(iommu_page_size(iommu)) - 1). This 1101da177e4SLinus Torvalds * mask specifies a mask of address bits that must be 0 in order for two buffers to be 1111da177e4SLinus Torvalds * mergeable by the I/O MMU (i.e., the end address of the first buffer and the start 1121da177e4SLinus Torvalds * address of the second buffer must be aligned to (merge_mask+1) in order to be 1131da177e4SLinus Torvalds * mergeable). By default, we assume there is no I/O MMU which can merge physically 1141da177e4SLinus Torvalds * discontiguous buffers, so we set the merge_mask to ~0UL, which corresponds to a iommu 1151da177e4SLinus Torvalds * page-size of 2^64. 1161da177e4SLinus Torvalds */ 1171da177e4SLinus Torvalds unsigned long ia64_max_iommu_merge_mask = ~0UL; 1181da177e4SLinus Torvalds EXPORT_SYMBOL(ia64_max_iommu_merge_mask); 1191da177e4SLinus Torvalds 1201da177e4SLinus Torvalds /* 1211da177e4SLinus Torvalds * We use a special marker for the end of memory and it uses the extra (+1) slot 1221da177e4SLinus Torvalds */ 1231da177e4SLinus Torvalds struct rsvd_region rsvd_region[IA64_MAX_RSVD_REGIONS + 1]; 1241da177e4SLinus Torvalds int num_rsvd_regions; 1251da177e4SLinus Torvalds 1261da177e4SLinus Torvalds 1271da177e4SLinus Torvalds /* 1281da177e4SLinus Torvalds * Filter incoming memory segments based on the primitive map created from the boot 1291da177e4SLinus Torvalds * parameters. Segments contained in the map are removed from the memory ranges. A 1301da177e4SLinus Torvalds * caller-specified function is called with the memory ranges that remain after filtering. 1311da177e4SLinus Torvalds * This routine does not assume the incoming segments are sorted. 1321da177e4SLinus Torvalds */ 1331da177e4SLinus Torvalds int 1341da177e4SLinus Torvalds filter_rsvd_memory (unsigned long start, unsigned long end, void *arg) 1351da177e4SLinus Torvalds { 1361da177e4SLinus Torvalds unsigned long range_start, range_end, prev_start; 1371da177e4SLinus Torvalds void (*func)(unsigned long, unsigned long, int); 1381da177e4SLinus Torvalds int i; 1391da177e4SLinus Torvalds 1401da177e4SLinus Torvalds #if IGNORE_PFN0 1411da177e4SLinus Torvalds if (start == PAGE_OFFSET) { 1421da177e4SLinus Torvalds printk(KERN_WARNING "warning: skipping physical page 0\n"); 1431da177e4SLinus Torvalds start += PAGE_SIZE; 1441da177e4SLinus Torvalds if (start >= end) return 0; 1451da177e4SLinus Torvalds } 1461da177e4SLinus Torvalds #endif 1471da177e4SLinus Torvalds /* 1481da177e4SLinus Torvalds * lowest possible address(walker uses virtual) 1491da177e4SLinus Torvalds */ 1501da177e4SLinus Torvalds prev_start = PAGE_OFFSET; 1511da177e4SLinus Torvalds func = arg; 1521da177e4SLinus Torvalds 1531da177e4SLinus Torvalds for (i = 0; i < num_rsvd_regions; ++i) { 1541da177e4SLinus Torvalds range_start = max(start, prev_start); 1551da177e4SLinus Torvalds range_end = min(end, rsvd_region[i].start); 1561da177e4SLinus Torvalds 1571da177e4SLinus Torvalds if (range_start < range_end) 1581da177e4SLinus Torvalds call_pernode_memory(__pa(range_start), range_end - range_start, func); 1591da177e4SLinus Torvalds 1601da177e4SLinus Torvalds /* nothing more available in this segment */ 1611da177e4SLinus Torvalds if (range_end == end) return 0; 1621da177e4SLinus Torvalds 1631da177e4SLinus Torvalds prev_start = rsvd_region[i].end; 1641da177e4SLinus Torvalds } 1651da177e4SLinus Torvalds /* end of memory marker allows full processing inside loop body */ 1661da177e4SLinus Torvalds return 0; 1671da177e4SLinus Torvalds } 1681da177e4SLinus Torvalds 1691da177e4SLinus Torvalds static void 1701da177e4SLinus Torvalds sort_regions (struct rsvd_region *rsvd_region, int max) 1711da177e4SLinus Torvalds { 1721da177e4SLinus Torvalds int j; 1731da177e4SLinus Torvalds 1741da177e4SLinus Torvalds /* simple bubble sorting */ 1751da177e4SLinus Torvalds while (max--) { 1761da177e4SLinus Torvalds for (j = 0; j < max; ++j) { 1771da177e4SLinus Torvalds if (rsvd_region[j].start > rsvd_region[j+1].start) { 1781da177e4SLinus Torvalds struct rsvd_region tmp; 1791da177e4SLinus Torvalds tmp = rsvd_region[j]; 1801da177e4SLinus Torvalds rsvd_region[j] = rsvd_region[j + 1]; 1811da177e4SLinus Torvalds rsvd_region[j + 1] = tmp; 1821da177e4SLinus Torvalds } 1831da177e4SLinus Torvalds } 1841da177e4SLinus Torvalds } 1851da177e4SLinus Torvalds } 1861da177e4SLinus Torvalds 187be379124SKhalid Aziz /* 188be379124SKhalid Aziz * Request address space for all standard resources 189be379124SKhalid Aziz */ 190be379124SKhalid Aziz static int __init register_memory(void) 191be379124SKhalid Aziz { 192be379124SKhalid Aziz code_resource.start = ia64_tpa(_text); 193be379124SKhalid Aziz code_resource.end = ia64_tpa(_etext) - 1; 194be379124SKhalid Aziz data_resource.start = ia64_tpa(_etext); 195d719948eSTony Luck data_resource.end = ia64_tpa(_end) - 1; 196be379124SKhalid Aziz efi_initialize_iomem_resources(&code_resource, &data_resource); 197be379124SKhalid Aziz 198be379124SKhalid Aziz return 0; 199be379124SKhalid Aziz } 200be379124SKhalid Aziz 201be379124SKhalid Aziz __initcall(register_memory); 202be379124SKhalid Aziz 2031da177e4SLinus Torvalds /** 2041da177e4SLinus Torvalds * reserve_memory - setup reserved memory areas 2051da177e4SLinus Torvalds * 2061da177e4SLinus Torvalds * Setup the reserved memory areas set aside for the boot parameters, 2071da177e4SLinus Torvalds * initrd, etc. There are currently %IA64_MAX_RSVD_REGIONS defined, 2081da177e4SLinus Torvalds * see include/asm-ia64/meminit.h if you need to define more. 2091da177e4SLinus Torvalds */ 2101da177e4SLinus Torvalds void 2111da177e4SLinus Torvalds reserve_memory (void) 2121da177e4SLinus Torvalds { 2131da177e4SLinus Torvalds int n = 0; 2141da177e4SLinus Torvalds 2151da177e4SLinus Torvalds /* 2161da177e4SLinus Torvalds * none of the entries in this table overlap 2171da177e4SLinus Torvalds */ 2181da177e4SLinus Torvalds rsvd_region[n].start = (unsigned long) ia64_boot_param; 2191da177e4SLinus Torvalds rsvd_region[n].end = rsvd_region[n].start + sizeof(*ia64_boot_param); 2201da177e4SLinus Torvalds n++; 2211da177e4SLinus Torvalds 2221da177e4SLinus Torvalds rsvd_region[n].start = (unsigned long) __va(ia64_boot_param->efi_memmap); 2231da177e4SLinus Torvalds rsvd_region[n].end = rsvd_region[n].start + ia64_boot_param->efi_memmap_size; 2241da177e4SLinus Torvalds n++; 2251da177e4SLinus Torvalds 2261da177e4SLinus Torvalds rsvd_region[n].start = (unsigned long) __va(ia64_boot_param->command_line); 2271da177e4SLinus Torvalds rsvd_region[n].end = (rsvd_region[n].start 2281da177e4SLinus Torvalds + strlen(__va(ia64_boot_param->command_line)) + 1); 2291da177e4SLinus Torvalds n++; 2301da177e4SLinus Torvalds 2311da177e4SLinus Torvalds rsvd_region[n].start = (unsigned long) ia64_imva((void *)KERNEL_START); 2321da177e4SLinus Torvalds rsvd_region[n].end = (unsigned long) ia64_imva(_end); 2331da177e4SLinus Torvalds n++; 2341da177e4SLinus Torvalds 2351da177e4SLinus Torvalds #ifdef CONFIG_BLK_DEV_INITRD 2361da177e4SLinus Torvalds if (ia64_boot_param->initrd_start) { 2371da177e4SLinus Torvalds rsvd_region[n].start = (unsigned long)__va(ia64_boot_param->initrd_start); 2381da177e4SLinus Torvalds rsvd_region[n].end = rsvd_region[n].start + ia64_boot_param->initrd_size; 2391da177e4SLinus Torvalds n++; 2401da177e4SLinus Torvalds } 2411da177e4SLinus Torvalds #endif 2421da177e4SLinus Torvalds 243d8c97d5fSTony Luck efi_memmap_init(&rsvd_region[n].start, &rsvd_region[n].end); 244d8c97d5fSTony Luck n++; 245d8c97d5fSTony Luck 2461da177e4SLinus Torvalds /* end of memory marker */ 2471da177e4SLinus Torvalds rsvd_region[n].start = ~0UL; 2481da177e4SLinus Torvalds rsvd_region[n].end = ~0UL; 2491da177e4SLinus Torvalds n++; 2501da177e4SLinus Torvalds 2511da177e4SLinus Torvalds num_rsvd_regions = n; 2521da177e4SLinus Torvalds 2531da177e4SLinus Torvalds sort_regions(rsvd_region, num_rsvd_regions); 2541da177e4SLinus Torvalds } 2551da177e4SLinus Torvalds 2561da177e4SLinus Torvalds /** 2571da177e4SLinus Torvalds * find_initrd - get initrd parameters from the boot parameter structure 2581da177e4SLinus Torvalds * 2591da177e4SLinus Torvalds * Grab the initrd start and end from the boot parameter struct given us by 2601da177e4SLinus Torvalds * the boot loader. 2611da177e4SLinus Torvalds */ 2621da177e4SLinus Torvalds void 2631da177e4SLinus Torvalds find_initrd (void) 2641da177e4SLinus Torvalds { 2651da177e4SLinus Torvalds #ifdef CONFIG_BLK_DEV_INITRD 2661da177e4SLinus Torvalds if (ia64_boot_param->initrd_start) { 2671da177e4SLinus Torvalds initrd_start = (unsigned long)__va(ia64_boot_param->initrd_start); 2681da177e4SLinus Torvalds initrd_end = initrd_start+ia64_boot_param->initrd_size; 2691da177e4SLinus Torvalds 2701da177e4SLinus Torvalds printk(KERN_INFO "Initial ramdisk at: 0x%lx (%lu bytes)\n", 2711da177e4SLinus Torvalds initrd_start, ia64_boot_param->initrd_size); 2721da177e4SLinus Torvalds } 2731da177e4SLinus Torvalds #endif 2741da177e4SLinus Torvalds } 2751da177e4SLinus Torvalds 2761da177e4SLinus Torvalds static void __init 2771da177e4SLinus Torvalds io_port_init (void) 2781da177e4SLinus Torvalds { 2791da177e4SLinus Torvalds unsigned long phys_iobase; 2801da177e4SLinus Torvalds 2811da177e4SLinus Torvalds /* 28244c45120SBjorn Helgaas * Set `iobase' based on the EFI memory map or, failing that, the 28344c45120SBjorn Helgaas * value firmware left in ar.k0. 2841da177e4SLinus Torvalds * 28544c45120SBjorn Helgaas * Note that in ia32 mode, IN/OUT instructions use ar.k0 to compute 28644c45120SBjorn Helgaas * the port's virtual address, so ia32_load_state() loads it with a 28744c45120SBjorn Helgaas * user virtual address. But in ia64 mode, glibc uses the 28844c45120SBjorn Helgaas * *physical* address in ar.k0 to mmap the appropriate area from 28944c45120SBjorn Helgaas * /dev/mem, and the inX()/outX() interfaces use MMIO. In both 29044c45120SBjorn Helgaas * cases, user-mode can only use the legacy 0-64K I/O port space. 29144c45120SBjorn Helgaas * 29244c45120SBjorn Helgaas * ar.k0 is not involved in kernel I/O port accesses, which can use 29344c45120SBjorn Helgaas * any of the I/O port spaces and are done via MMIO using the 29444c45120SBjorn Helgaas * virtual mmio_base from the appropriate io_space[]. 2951da177e4SLinus Torvalds */ 2961da177e4SLinus Torvalds phys_iobase = efi_get_iobase(); 29744c45120SBjorn Helgaas if (!phys_iobase) { 2981da177e4SLinus Torvalds phys_iobase = ia64_get_kr(IA64_KR_IO_BASE); 29944c45120SBjorn Helgaas printk(KERN_INFO "No I/O port range found in EFI memory map, " 30044c45120SBjorn Helgaas "falling back to AR.KR0 (0x%lx)\n", phys_iobase); 3011da177e4SLinus Torvalds } 3021da177e4SLinus Torvalds ia64_iobase = (unsigned long) ioremap(phys_iobase, 0); 30344c45120SBjorn Helgaas ia64_set_kr(IA64_KR_IO_BASE, __pa(ia64_iobase)); 3041da177e4SLinus Torvalds 3051da177e4SLinus Torvalds /* setup legacy IO port space */ 3061da177e4SLinus Torvalds io_space[0].mmio_base = ia64_iobase; 3071da177e4SLinus Torvalds io_space[0].sparse = 1; 3081da177e4SLinus Torvalds num_io_spaces = 1; 3091da177e4SLinus Torvalds } 3101da177e4SLinus Torvalds 3111da177e4SLinus Torvalds /** 3121da177e4SLinus Torvalds * early_console_setup - setup debugging console 3131da177e4SLinus Torvalds * 3141da177e4SLinus Torvalds * Consoles started here require little enough setup that we can start using 3151da177e4SLinus Torvalds * them very early in the boot process, either right after the machine 3161da177e4SLinus Torvalds * vector initialization, or even before if the drivers can detect their hw. 3171da177e4SLinus Torvalds * 3181da177e4SLinus Torvalds * Returns non-zero if a console couldn't be setup. 3191da177e4SLinus Torvalds */ 3201da177e4SLinus Torvalds static inline int __init 3211da177e4SLinus Torvalds early_console_setup (char *cmdline) 3221da177e4SLinus Torvalds { 32366b7f8a3SMark Maule int earlycons = 0; 32466b7f8a3SMark Maule 3251da177e4SLinus Torvalds #ifdef CONFIG_SERIAL_SGI_L1_CONSOLE 3261da177e4SLinus Torvalds { 3271da177e4SLinus Torvalds extern int sn_serial_console_early_setup(void); 3281da177e4SLinus Torvalds if (!sn_serial_console_early_setup()) 32966b7f8a3SMark Maule earlycons++; 3301da177e4SLinus Torvalds } 3311da177e4SLinus Torvalds #endif 3321da177e4SLinus Torvalds #ifdef CONFIG_EFI_PCDP 3331da177e4SLinus Torvalds if (!efi_setup_pcdp_console(cmdline)) 33466b7f8a3SMark Maule earlycons++; 3351da177e4SLinus Torvalds #endif 3361da177e4SLinus Torvalds #ifdef CONFIG_SERIAL_8250_CONSOLE 3371da177e4SLinus Torvalds if (!early_serial_console_init(cmdline)) 33866b7f8a3SMark Maule earlycons++; 3391da177e4SLinus Torvalds #endif 3401da177e4SLinus Torvalds 34166b7f8a3SMark Maule return (earlycons) ? 0 : -1; 3421da177e4SLinus Torvalds } 3431da177e4SLinus Torvalds 3441da177e4SLinus Torvalds static inline void 3451da177e4SLinus Torvalds mark_bsp_online (void) 3461da177e4SLinus Torvalds { 3471da177e4SLinus Torvalds #ifdef CONFIG_SMP 3481da177e4SLinus Torvalds /* If we register an early console, allow CPU 0 to printk */ 3491da177e4SLinus Torvalds cpu_set(smp_processor_id(), cpu_online_map); 3501da177e4SLinus Torvalds #endif 3511da177e4SLinus Torvalds } 3521da177e4SLinus Torvalds 353e927ecb0SSuresh Siddha #ifdef CONFIG_SMP 354e927ecb0SSuresh Siddha static void 355e927ecb0SSuresh Siddha check_for_logical_procs (void) 356e927ecb0SSuresh Siddha { 357e927ecb0SSuresh Siddha pal_logical_to_physical_t info; 358e927ecb0SSuresh Siddha s64 status; 359e927ecb0SSuresh Siddha 360e927ecb0SSuresh Siddha status = ia64_pal_logical_to_phys(0, &info); 361e927ecb0SSuresh Siddha if (status == -1) { 362e927ecb0SSuresh Siddha printk(KERN_INFO "No logical to physical processor mapping " 363e927ecb0SSuresh Siddha "available\n"); 364e927ecb0SSuresh Siddha return; 365e927ecb0SSuresh Siddha } 366e927ecb0SSuresh Siddha if (status) { 367e927ecb0SSuresh Siddha printk(KERN_ERR "ia64_pal_logical_to_phys failed with %ld\n", 368e927ecb0SSuresh Siddha status); 369e927ecb0SSuresh Siddha return; 370e927ecb0SSuresh Siddha } 371e927ecb0SSuresh Siddha /* 372e927ecb0SSuresh Siddha * Total number of siblings that BSP has. Though not all of them 373e927ecb0SSuresh Siddha * may have booted successfully. The correct number of siblings 374e927ecb0SSuresh Siddha * booted is in info.overview_num_log. 375e927ecb0SSuresh Siddha */ 376e927ecb0SSuresh Siddha smp_num_siblings = info.overview_tpc; 377e927ecb0SSuresh Siddha smp_num_cpucores = info.overview_cpp; 378e927ecb0SSuresh Siddha } 379e927ecb0SSuresh Siddha #endif 380e927ecb0SSuresh Siddha 3811da177e4SLinus Torvalds void __init 3821da177e4SLinus Torvalds setup_arch (char **cmdline_p) 3831da177e4SLinus Torvalds { 3841da177e4SLinus Torvalds unw_init(); 3851da177e4SLinus Torvalds 3861da177e4SLinus Torvalds ia64_patch_vtop((u64) __start___vtop_patchlist, (u64) __end___vtop_patchlist); 3871da177e4SLinus Torvalds 3881da177e4SLinus Torvalds *cmdline_p = __va(ia64_boot_param->command_line); 3891da177e4SLinus Torvalds strlcpy(saved_command_line, *cmdline_p, COMMAND_LINE_SIZE); 3901da177e4SLinus Torvalds 3911da177e4SLinus Torvalds efi_init(); 3921da177e4SLinus Torvalds io_port_init(); 3931da177e4SLinus Torvalds 3941da177e4SLinus Torvalds #ifdef CONFIG_IA64_GENERIC 3951da177e4SLinus Torvalds { 3961da177e4SLinus Torvalds const char *mvec_name = strstr (*cmdline_p, "machvec="); 3971da177e4SLinus Torvalds char str[64]; 3981da177e4SLinus Torvalds 3991da177e4SLinus Torvalds if (mvec_name) { 4001da177e4SLinus Torvalds const char *end; 4011da177e4SLinus Torvalds size_t len; 4021da177e4SLinus Torvalds 4031da177e4SLinus Torvalds mvec_name += 8; 4041da177e4SLinus Torvalds end = strchr (mvec_name, ' '); 4051da177e4SLinus Torvalds if (end) 4061da177e4SLinus Torvalds len = end - mvec_name; 4071da177e4SLinus Torvalds else 4081da177e4SLinus Torvalds len = strlen (mvec_name); 4091da177e4SLinus Torvalds len = min(len, sizeof (str) - 1); 4101da177e4SLinus Torvalds strncpy (str, mvec_name, len); 4111da177e4SLinus Torvalds str[len] = '\0'; 4121da177e4SLinus Torvalds mvec_name = str; 4131da177e4SLinus Torvalds } else 4141da177e4SLinus Torvalds mvec_name = acpi_get_sysname(); 4151da177e4SLinus Torvalds machvec_init(mvec_name); 4161da177e4SLinus Torvalds } 4171da177e4SLinus Torvalds #endif 4181da177e4SLinus Torvalds 4191da177e4SLinus Torvalds if (early_console_setup(*cmdline_p) == 0) 4201da177e4SLinus Torvalds mark_bsp_online(); 4211da177e4SLinus Torvalds 422888ba6c6SLen Brown #ifdef CONFIG_ACPI 4231da177e4SLinus Torvalds /* Initialize the ACPI boot-time table parser */ 4241da177e4SLinus Torvalds acpi_table_init(); 4251da177e4SLinus Torvalds # ifdef CONFIG_ACPI_NUMA 4261da177e4SLinus Torvalds acpi_numa_init(); 4271da177e4SLinus Torvalds # endif 4281da177e4SLinus Torvalds #else 4291da177e4SLinus Torvalds # ifdef CONFIG_SMP 4301da177e4SLinus Torvalds smp_build_cpu_map(); /* happens, e.g., with the Ski simulator */ 4311da177e4SLinus Torvalds # endif 4321da177e4SLinus Torvalds #endif /* CONFIG_APCI_BOOT */ 4331da177e4SLinus Torvalds 4341da177e4SLinus Torvalds find_memory(); 4351da177e4SLinus Torvalds 4361da177e4SLinus Torvalds /* process SAL system table: */ 4371da177e4SLinus Torvalds ia64_sal_init(efi.sal_systab); 4381da177e4SLinus Torvalds 4391da177e4SLinus Torvalds #ifdef CONFIG_SMP 4401da177e4SLinus Torvalds cpu_physical_id(0) = hard_smp_processor_id(); 441e927ecb0SSuresh Siddha 442e927ecb0SSuresh Siddha cpu_set(0, cpu_sibling_map[0]); 443e927ecb0SSuresh Siddha cpu_set(0, cpu_core_map[0]); 444e927ecb0SSuresh Siddha 445e927ecb0SSuresh Siddha check_for_logical_procs(); 446e927ecb0SSuresh Siddha if (smp_num_cpucores > 1) 447e927ecb0SSuresh Siddha printk(KERN_INFO 448e927ecb0SSuresh Siddha "cpu package is Multi-Core capable: number of cores=%d\n", 449e927ecb0SSuresh Siddha smp_num_cpucores); 450e927ecb0SSuresh Siddha if (smp_num_siblings > 1) 451e927ecb0SSuresh Siddha printk(KERN_INFO 452e927ecb0SSuresh Siddha "cpu package is Multi-Threading capable: number of siblings=%d\n", 453e927ecb0SSuresh Siddha smp_num_siblings); 4541da177e4SLinus Torvalds #endif 4551da177e4SLinus Torvalds 4561da177e4SLinus Torvalds cpu_init(); /* initialize the bootstrap CPU */ 457dcc17d1bSPeter Keilty mmu_context_init(); /* initialize context_id bitmap */ 4581da177e4SLinus Torvalds 459888ba6c6SLen Brown #ifdef CONFIG_ACPI 4601da177e4SLinus Torvalds acpi_boot_init(); 4611da177e4SLinus Torvalds #endif 4621da177e4SLinus Torvalds 4631da177e4SLinus Torvalds #ifdef CONFIG_VT 4641da177e4SLinus Torvalds if (!conswitchp) { 4651da177e4SLinus Torvalds # if defined(CONFIG_DUMMY_CONSOLE) 4661da177e4SLinus Torvalds conswitchp = &dummy_con; 4671da177e4SLinus Torvalds # endif 4681da177e4SLinus Torvalds # if defined(CONFIG_VGA_CONSOLE) 4691da177e4SLinus Torvalds /* 4701da177e4SLinus Torvalds * Non-legacy systems may route legacy VGA MMIO range to system 4711da177e4SLinus Torvalds * memory. vga_con probes the MMIO hole, so memory looks like 4721da177e4SLinus Torvalds * a VGA device to it. The EFI memory map can tell us if it's 4731da177e4SLinus Torvalds * memory so we can avoid this problem. 4741da177e4SLinus Torvalds */ 4751da177e4SLinus Torvalds if (efi_mem_type(0xA0000) != EFI_CONVENTIONAL_MEMORY) 4761da177e4SLinus Torvalds conswitchp = &vga_con; 4771da177e4SLinus Torvalds # endif 4781da177e4SLinus Torvalds } 4791da177e4SLinus Torvalds #endif 4801da177e4SLinus Torvalds 4811da177e4SLinus Torvalds /* enable IA-64 Machine Check Abort Handling unless disabled */ 4821da177e4SLinus Torvalds if (!strstr(saved_command_line, "nomca")) 4831da177e4SLinus Torvalds ia64_mca_init(); 4841da177e4SLinus Torvalds 4851da177e4SLinus Torvalds platform_setup(cmdline_p); 4861da177e4SLinus Torvalds paging_init(); 4871da177e4SLinus Torvalds } 4881da177e4SLinus Torvalds 4891da177e4SLinus Torvalds /* 4901da177e4SLinus Torvalds * Display cpu info for all cpu's. 4911da177e4SLinus Torvalds */ 4921da177e4SLinus Torvalds static int 4931da177e4SLinus Torvalds show_cpuinfo (struct seq_file *m, void *v) 4941da177e4SLinus Torvalds { 4951da177e4SLinus Torvalds #ifdef CONFIG_SMP 4961da177e4SLinus Torvalds # define lpj c->loops_per_jiffy 4971da177e4SLinus Torvalds # define cpunum c->cpu 4981da177e4SLinus Torvalds #else 4991da177e4SLinus Torvalds # define lpj loops_per_jiffy 5001da177e4SLinus Torvalds # define cpunum 0 5011da177e4SLinus Torvalds #endif 5021da177e4SLinus Torvalds static struct { 5031da177e4SLinus Torvalds unsigned long mask; 5041da177e4SLinus Torvalds const char *feature_name; 5051da177e4SLinus Torvalds } feature_bits[] = { 5061da177e4SLinus Torvalds { 1UL << 0, "branchlong" }, 5071da177e4SLinus Torvalds { 1UL << 1, "spontaneous deferral"}, 5081da177e4SLinus Torvalds { 1UL << 2, "16-byte atomic ops" } 5091da177e4SLinus Torvalds }; 5101da177e4SLinus Torvalds char family[32], features[128], *cp, sep; 5111da177e4SLinus Torvalds struct cpuinfo_ia64 *c = v; 5121da177e4SLinus Torvalds unsigned long mask; 5131da177e4SLinus Torvalds int i; 5141da177e4SLinus Torvalds 5151da177e4SLinus Torvalds mask = c->features; 5161da177e4SLinus Torvalds 5171da177e4SLinus Torvalds switch (c->family) { 5181da177e4SLinus Torvalds case 0x07: memcpy(family, "Itanium", 8); break; 5191da177e4SLinus Torvalds case 0x1f: memcpy(family, "Itanium 2", 10); break; 5201da177e4SLinus Torvalds default: sprintf(family, "%u", c->family); break; 5211da177e4SLinus Torvalds } 5221da177e4SLinus Torvalds 5231da177e4SLinus Torvalds /* build the feature string: */ 5241da177e4SLinus Torvalds memcpy(features, " standard", 10); 5251da177e4SLinus Torvalds cp = features; 5261da177e4SLinus Torvalds sep = 0; 5271da177e4SLinus Torvalds for (i = 0; i < (int) ARRAY_SIZE(feature_bits); ++i) { 5281da177e4SLinus Torvalds if (mask & feature_bits[i].mask) { 5291da177e4SLinus Torvalds if (sep) 5301da177e4SLinus Torvalds *cp++ = sep; 5311da177e4SLinus Torvalds sep = ','; 5321da177e4SLinus Torvalds *cp++ = ' '; 5331da177e4SLinus Torvalds strcpy(cp, feature_bits[i].feature_name); 5341da177e4SLinus Torvalds cp += strlen(feature_bits[i].feature_name); 5351da177e4SLinus Torvalds mask &= ~feature_bits[i].mask; 5361da177e4SLinus Torvalds } 5371da177e4SLinus Torvalds } 5381da177e4SLinus Torvalds if (mask) { 5391da177e4SLinus Torvalds /* print unknown features as a hex value: */ 5401da177e4SLinus Torvalds if (sep) 5411da177e4SLinus Torvalds *cp++ = sep; 5421da177e4SLinus Torvalds sprintf(cp, " 0x%lx", mask); 5431da177e4SLinus Torvalds } 5441da177e4SLinus Torvalds 5451da177e4SLinus Torvalds seq_printf(m, 5461da177e4SLinus Torvalds "processor : %d\n" 5471da177e4SLinus Torvalds "vendor : %s\n" 5481da177e4SLinus Torvalds "arch : IA-64\n" 5491da177e4SLinus Torvalds "family : %s\n" 5501da177e4SLinus Torvalds "model : %u\n" 5511da177e4SLinus Torvalds "revision : %u\n" 5521da177e4SLinus Torvalds "archrev : %u\n" 5531da177e4SLinus Torvalds "features :%s\n" /* don't change this---it _is_ right! */ 5541da177e4SLinus Torvalds "cpu number : %lu\n" 5551da177e4SLinus Torvalds "cpu regs : %u\n" 5561da177e4SLinus Torvalds "cpu MHz : %lu.%06lu\n" 5571da177e4SLinus Torvalds "itc MHz : %lu.%06lu\n" 558e927ecb0SSuresh Siddha "BogoMIPS : %lu.%02lu\n", 5591da177e4SLinus Torvalds cpunum, c->vendor, family, c->model, c->revision, c->archrev, 5601da177e4SLinus Torvalds features, c->ppn, c->number, 5611da177e4SLinus Torvalds c->proc_freq / 1000000, c->proc_freq % 1000000, 5621da177e4SLinus Torvalds c->itc_freq / 1000000, c->itc_freq % 1000000, 5631da177e4SLinus Torvalds lpj*HZ/500000, (lpj*HZ/5000) % 100); 564e927ecb0SSuresh Siddha #ifdef CONFIG_SMP 565ce6e71adSSiddha, Suresh B seq_printf(m, "siblings : %u\n", cpus_weight(cpu_core_map[cpunum])); 566e927ecb0SSuresh Siddha if (c->threads_per_core > 1 || c->cores_per_socket > 1) 567e927ecb0SSuresh Siddha seq_printf(m, 568e927ecb0SSuresh Siddha "physical id: %u\n" 569e927ecb0SSuresh Siddha "core id : %u\n" 570e927ecb0SSuresh Siddha "thread id : %u\n", 571e927ecb0SSuresh Siddha c->socket_id, c->core_id, c->thread_id); 572e927ecb0SSuresh Siddha #endif 573e927ecb0SSuresh Siddha seq_printf(m,"\n"); 574e927ecb0SSuresh Siddha 5751da177e4SLinus Torvalds return 0; 5761da177e4SLinus Torvalds } 5771da177e4SLinus Torvalds 5781da177e4SLinus Torvalds static void * 5791da177e4SLinus Torvalds c_start (struct seq_file *m, loff_t *pos) 5801da177e4SLinus Torvalds { 5811da177e4SLinus Torvalds #ifdef CONFIG_SMP 5821da177e4SLinus Torvalds while (*pos < NR_CPUS && !cpu_isset(*pos, cpu_online_map)) 5831da177e4SLinus Torvalds ++*pos; 5841da177e4SLinus Torvalds #endif 5851da177e4SLinus Torvalds return *pos < NR_CPUS ? cpu_data(*pos) : NULL; 5861da177e4SLinus Torvalds } 5871da177e4SLinus Torvalds 5881da177e4SLinus Torvalds static void * 5891da177e4SLinus Torvalds c_next (struct seq_file *m, void *v, loff_t *pos) 5901da177e4SLinus Torvalds { 5911da177e4SLinus Torvalds ++*pos; 5921da177e4SLinus Torvalds return c_start(m, pos); 5931da177e4SLinus Torvalds } 5941da177e4SLinus Torvalds 5951da177e4SLinus Torvalds static void 5961da177e4SLinus Torvalds c_stop (struct seq_file *m, void *v) 5971da177e4SLinus Torvalds { 5981da177e4SLinus Torvalds } 5991da177e4SLinus Torvalds 6001da177e4SLinus Torvalds struct seq_operations cpuinfo_op = { 6011da177e4SLinus Torvalds .start = c_start, 6021da177e4SLinus Torvalds .next = c_next, 6031da177e4SLinus Torvalds .stop = c_stop, 6041da177e4SLinus Torvalds .show = show_cpuinfo 6051da177e4SLinus Torvalds }; 6061da177e4SLinus Torvalds 6071da177e4SLinus Torvalds void 6081da177e4SLinus Torvalds identify_cpu (struct cpuinfo_ia64 *c) 6091da177e4SLinus Torvalds { 6101da177e4SLinus Torvalds union { 6111da177e4SLinus Torvalds unsigned long bits[5]; 6121da177e4SLinus Torvalds struct { 6131da177e4SLinus Torvalds /* id 0 & 1: */ 6141da177e4SLinus Torvalds char vendor[16]; 6151da177e4SLinus Torvalds 6161da177e4SLinus Torvalds /* id 2 */ 6171da177e4SLinus Torvalds u64 ppn; /* processor serial number */ 6181da177e4SLinus Torvalds 6191da177e4SLinus Torvalds /* id 3: */ 6201da177e4SLinus Torvalds unsigned number : 8; 6211da177e4SLinus Torvalds unsigned revision : 8; 6221da177e4SLinus Torvalds unsigned model : 8; 6231da177e4SLinus Torvalds unsigned family : 8; 6241da177e4SLinus Torvalds unsigned archrev : 8; 6251da177e4SLinus Torvalds unsigned reserved : 24; 6261da177e4SLinus Torvalds 6271da177e4SLinus Torvalds /* id 4: */ 6281da177e4SLinus Torvalds u64 features; 6291da177e4SLinus Torvalds } field; 6301da177e4SLinus Torvalds } cpuid; 6311da177e4SLinus Torvalds pal_vm_info_1_u_t vm1; 6321da177e4SLinus Torvalds pal_vm_info_2_u_t vm2; 6331da177e4SLinus Torvalds pal_status_t status; 6341da177e4SLinus Torvalds unsigned long impl_va_msb = 50, phys_addr_size = 44; /* Itanium defaults */ 6351da177e4SLinus Torvalds int i; 6361da177e4SLinus Torvalds 6371da177e4SLinus Torvalds for (i = 0; i < 5; ++i) 6381da177e4SLinus Torvalds cpuid.bits[i] = ia64_get_cpuid(i); 6391da177e4SLinus Torvalds 6401da177e4SLinus Torvalds memcpy(c->vendor, cpuid.field.vendor, 16); 6411da177e4SLinus Torvalds #ifdef CONFIG_SMP 6421da177e4SLinus Torvalds c->cpu = smp_processor_id(); 643e927ecb0SSuresh Siddha 644e927ecb0SSuresh Siddha /* below default values will be overwritten by identify_siblings() 645e927ecb0SSuresh Siddha * for Multi-Threading/Multi-Core capable cpu's 646e927ecb0SSuresh Siddha */ 647e927ecb0SSuresh Siddha c->threads_per_core = c->cores_per_socket = c->num_log = 1; 648e927ecb0SSuresh Siddha c->socket_id = -1; 649e927ecb0SSuresh Siddha 650e927ecb0SSuresh Siddha identify_siblings(c); 6511da177e4SLinus Torvalds #endif 6521da177e4SLinus Torvalds c->ppn = cpuid.field.ppn; 6531da177e4SLinus Torvalds c->number = cpuid.field.number; 6541da177e4SLinus Torvalds c->revision = cpuid.field.revision; 6551da177e4SLinus Torvalds c->model = cpuid.field.model; 6561da177e4SLinus Torvalds c->family = cpuid.field.family; 6571da177e4SLinus Torvalds c->archrev = cpuid.field.archrev; 6581da177e4SLinus Torvalds c->features = cpuid.field.features; 6591da177e4SLinus Torvalds 6601da177e4SLinus Torvalds status = ia64_pal_vm_summary(&vm1, &vm2); 6611da177e4SLinus Torvalds if (status == PAL_STATUS_SUCCESS) { 6621da177e4SLinus Torvalds impl_va_msb = vm2.pal_vm_info_2_s.impl_va_msb; 6631da177e4SLinus Torvalds phys_addr_size = vm1.pal_vm_info_1_s.phys_add_size; 6641da177e4SLinus Torvalds } 6651da177e4SLinus Torvalds c->unimpl_va_mask = ~((7L<<61) | ((1L << (impl_va_msb + 1)) - 1)); 6661da177e4SLinus Torvalds c->unimpl_pa_mask = ~((1L<<63) | ((1L << phys_addr_size) - 1)); 6671da177e4SLinus Torvalds } 6681da177e4SLinus Torvalds 6691da177e4SLinus Torvalds void 6701da177e4SLinus Torvalds setup_per_cpu_areas (void) 6711da177e4SLinus Torvalds { 6721da177e4SLinus Torvalds /* start_kernel() requires this... */ 6731da177e4SLinus Torvalds } 6741da177e4SLinus Torvalds 67508357f82SZoltan Menyhart /* 67608357f82SZoltan Menyhart * Calculate the max. cache line size. 67708357f82SZoltan Menyhart * 67808357f82SZoltan Menyhart * In addition, the minimum of the i-cache stride sizes is calculated for 67908357f82SZoltan Menyhart * "flush_icache_range()". 68008357f82SZoltan Menyhart */ 6811da177e4SLinus Torvalds static void 6821da177e4SLinus Torvalds get_max_cacheline_size (void) 6831da177e4SLinus Torvalds { 6841da177e4SLinus Torvalds unsigned long line_size, max = 1; 6851da177e4SLinus Torvalds u64 l, levels, unique_caches; 6861da177e4SLinus Torvalds pal_cache_config_info_t cci; 6871da177e4SLinus Torvalds s64 status; 6881da177e4SLinus Torvalds 6891da177e4SLinus Torvalds status = ia64_pal_cache_summary(&levels, &unique_caches); 6901da177e4SLinus Torvalds if (status != 0) { 6911da177e4SLinus Torvalds printk(KERN_ERR "%s: ia64_pal_cache_summary() failed (status=%ld)\n", 6921da177e4SLinus Torvalds __FUNCTION__, status); 6931da177e4SLinus Torvalds max = SMP_CACHE_BYTES; 69408357f82SZoltan Menyhart /* Safest setup for "flush_icache_range()" */ 69508357f82SZoltan Menyhart ia64_i_cache_stride_shift = I_CACHE_STRIDE_SHIFT; 6961da177e4SLinus Torvalds goto out; 6971da177e4SLinus Torvalds } 6981da177e4SLinus Torvalds 6991da177e4SLinus Torvalds for (l = 0; l < levels; ++l) { 7001da177e4SLinus Torvalds status = ia64_pal_cache_config_info(l, /* cache_type (data_or_unified)= */ 2, 7011da177e4SLinus Torvalds &cci); 7021da177e4SLinus Torvalds if (status != 0) { 7031da177e4SLinus Torvalds printk(KERN_ERR 70408357f82SZoltan Menyhart "%s: ia64_pal_cache_config_info(l=%lu, 2) failed (status=%ld)\n", 7051da177e4SLinus Torvalds __FUNCTION__, l, status); 7061da177e4SLinus Torvalds max = SMP_CACHE_BYTES; 70708357f82SZoltan Menyhart /* The safest setup for "flush_icache_range()" */ 70808357f82SZoltan Menyhart cci.pcci_stride = I_CACHE_STRIDE_SHIFT; 70908357f82SZoltan Menyhart cci.pcci_unified = 1; 7101da177e4SLinus Torvalds } 7111da177e4SLinus Torvalds line_size = 1 << cci.pcci_line_size; 7121da177e4SLinus Torvalds if (line_size > max) 7131da177e4SLinus Torvalds max = line_size; 71408357f82SZoltan Menyhart if (!cci.pcci_unified) { 71508357f82SZoltan Menyhart status = ia64_pal_cache_config_info(l, 71608357f82SZoltan Menyhart /* cache_type (instruction)= */ 1, 71708357f82SZoltan Menyhart &cci); 71808357f82SZoltan Menyhart if (status != 0) { 71908357f82SZoltan Menyhart printk(KERN_ERR 72008357f82SZoltan Menyhart "%s: ia64_pal_cache_config_info(l=%lu, 1) failed (status=%ld)\n", 72108357f82SZoltan Menyhart __FUNCTION__, l, status); 72208357f82SZoltan Menyhart /* The safest setup for "flush_icache_range()" */ 72308357f82SZoltan Menyhart cci.pcci_stride = I_CACHE_STRIDE_SHIFT; 72408357f82SZoltan Menyhart } 72508357f82SZoltan Menyhart } 72608357f82SZoltan Menyhart if (cci.pcci_stride < ia64_i_cache_stride_shift) 72708357f82SZoltan Menyhart ia64_i_cache_stride_shift = cci.pcci_stride; 7281da177e4SLinus Torvalds } 7291da177e4SLinus Torvalds out: 7301da177e4SLinus Torvalds if (max > ia64_max_cacheline_size) 7311da177e4SLinus Torvalds ia64_max_cacheline_size = max; 7321da177e4SLinus Torvalds } 7331da177e4SLinus Torvalds 7341da177e4SLinus Torvalds /* 7351da177e4SLinus Torvalds * cpu_init() initializes state that is per-CPU. This function acts 7361da177e4SLinus Torvalds * as a 'CPU state barrier', nothing should get across. 7371da177e4SLinus Torvalds */ 7381da177e4SLinus Torvalds void 7391da177e4SLinus Torvalds cpu_init (void) 7401da177e4SLinus Torvalds { 7411da177e4SLinus Torvalds extern void __devinit ia64_mmu_init (void *); 7421da177e4SLinus Torvalds unsigned long num_phys_stacked; 7431da177e4SLinus Torvalds pal_vm_info_2_u_t vmi; 7441da177e4SLinus Torvalds unsigned int max_ctx; 7451da177e4SLinus Torvalds struct cpuinfo_ia64 *cpu_info; 7461da177e4SLinus Torvalds void *cpu_data; 7471da177e4SLinus Torvalds 7481da177e4SLinus Torvalds cpu_data = per_cpu_init(); 7491da177e4SLinus Torvalds 7501da177e4SLinus Torvalds /* 7511da177e4SLinus Torvalds * We set ar.k3 so that assembly code in MCA handler can compute 7521da177e4SLinus Torvalds * physical addresses of per cpu variables with a simple: 7531da177e4SLinus Torvalds * phys = ar.k3 + &per_cpu_var 7541da177e4SLinus Torvalds */ 7551da177e4SLinus Torvalds ia64_set_kr(IA64_KR_PER_CPU_DATA, 7561da177e4SLinus Torvalds ia64_tpa(cpu_data) - (long) __per_cpu_start); 7571da177e4SLinus Torvalds 7581da177e4SLinus Torvalds get_max_cacheline_size(); 7591da177e4SLinus Torvalds 7601da177e4SLinus Torvalds /* 7611da177e4SLinus Torvalds * We can't pass "local_cpu_data" to identify_cpu() because we haven't called 7621da177e4SLinus Torvalds * ia64_mmu_init() yet. And we can't call ia64_mmu_init() first because it 7631da177e4SLinus Torvalds * depends on the data returned by identify_cpu(). We break the dependency by 7641da177e4SLinus Torvalds * accessing cpu_data() through the canonical per-CPU address. 7651da177e4SLinus Torvalds */ 7661da177e4SLinus Torvalds cpu_info = cpu_data + ((char *) &__ia64_per_cpu_var(cpu_info) - __per_cpu_start); 7671da177e4SLinus Torvalds identify_cpu(cpu_info); 7681da177e4SLinus Torvalds 7691da177e4SLinus Torvalds #ifdef CONFIG_MCKINLEY 7701da177e4SLinus Torvalds { 7711da177e4SLinus Torvalds # define FEATURE_SET 16 7721da177e4SLinus Torvalds struct ia64_pal_retval iprv; 7731da177e4SLinus Torvalds 7741da177e4SLinus Torvalds if (cpu_info->family == 0x1f) { 7751da177e4SLinus Torvalds PAL_CALL_PHYS(iprv, PAL_PROC_GET_FEATURES, 0, FEATURE_SET, 0); 7761da177e4SLinus Torvalds if ((iprv.status == 0) && (iprv.v0 & 0x80) && (iprv.v2 & 0x80)) 7771da177e4SLinus Torvalds PAL_CALL_PHYS(iprv, PAL_PROC_SET_FEATURES, 7781da177e4SLinus Torvalds (iprv.v1 | 0x80), FEATURE_SET, 0); 7791da177e4SLinus Torvalds } 7801da177e4SLinus Torvalds } 7811da177e4SLinus Torvalds #endif 7821da177e4SLinus Torvalds 7831da177e4SLinus Torvalds /* Clear the stack memory reserved for pt_regs: */ 7841da177e4SLinus Torvalds memset(ia64_task_regs(current), 0, sizeof(struct pt_regs)); 7851da177e4SLinus Torvalds 7861da177e4SLinus Torvalds ia64_set_kr(IA64_KR_FPU_OWNER, 0); 7871da177e4SLinus Torvalds 7881da177e4SLinus Torvalds /* 7891da177e4SLinus Torvalds * Initialize the page-table base register to a global 7901da177e4SLinus Torvalds * directory with all zeroes. This ensure that we can handle 7911da177e4SLinus Torvalds * TLB-misses to user address-space even before we created the 7921da177e4SLinus Torvalds * first user address-space. This may happen, e.g., due to 7931da177e4SLinus Torvalds * aggressive use of lfetch.fault. 7941da177e4SLinus Torvalds */ 7951da177e4SLinus Torvalds ia64_set_kr(IA64_KR_PT_BASE, __pa(ia64_imva(empty_zero_page))); 7961da177e4SLinus Torvalds 7971da177e4SLinus Torvalds /* 79886ebacd3STony Luck * Initialize default control register to defer speculative faults except 79986ebacd3STony Luck * for those arising from TLB misses, which are not deferred. The 8001da177e4SLinus Torvalds * kernel MUST NOT depend on a particular setting of these bits (in other words, 8011da177e4SLinus Torvalds * the kernel must have recovery code for all speculative accesses). Turn on 8021da177e4SLinus Torvalds * dcr.lc as per recommendation by the architecture team. Most IA-32 apps 8031da177e4SLinus Torvalds * shouldn't be affected by this (moral: keep your ia32 locks aligned and you'll 8041da177e4SLinus Torvalds * be fine). 8051da177e4SLinus Torvalds */ 8061da177e4SLinus Torvalds ia64_setreg(_IA64_REG_CR_DCR, ( IA64_DCR_DP | IA64_DCR_DK | IA64_DCR_DX | IA64_DCR_DR 8071da177e4SLinus Torvalds | IA64_DCR_DA | IA64_DCR_DD | IA64_DCR_LC)); 8081da177e4SLinus Torvalds atomic_inc(&init_mm.mm_count); 8091da177e4SLinus Torvalds current->active_mm = &init_mm; 8101da177e4SLinus Torvalds if (current->mm) 8111da177e4SLinus Torvalds BUG(); 8121da177e4SLinus Torvalds 8131da177e4SLinus Torvalds ia64_mmu_init(ia64_imva(cpu_data)); 8141da177e4SLinus Torvalds ia64_mca_cpu_init(ia64_imva(cpu_data)); 8151da177e4SLinus Torvalds 8161da177e4SLinus Torvalds #ifdef CONFIG_IA32_SUPPORT 8171da177e4SLinus Torvalds ia32_cpu_init(); 8181da177e4SLinus Torvalds #endif 8191da177e4SLinus Torvalds 8201da177e4SLinus Torvalds /* Clear ITC to eliminiate sched_clock() overflows in human time. */ 8211da177e4SLinus Torvalds ia64_set_itc(0); 8221da177e4SLinus Torvalds 8231da177e4SLinus Torvalds /* disable all local interrupt sources: */ 8241da177e4SLinus Torvalds ia64_set_itv(1 << 16); 8251da177e4SLinus Torvalds ia64_set_lrr0(1 << 16); 8261da177e4SLinus Torvalds ia64_set_lrr1(1 << 16); 8271da177e4SLinus Torvalds ia64_setreg(_IA64_REG_CR_PMV, 1 << 16); 8281da177e4SLinus Torvalds ia64_setreg(_IA64_REG_CR_CMCV, 1 << 16); 8291da177e4SLinus Torvalds 8301da177e4SLinus Torvalds /* clear TPR & XTP to enable all interrupt classes: */ 8311da177e4SLinus Torvalds ia64_setreg(_IA64_REG_CR_TPR, 0); 8321da177e4SLinus Torvalds #ifdef CONFIG_SMP 8331da177e4SLinus Torvalds normal_xtp(); 8341da177e4SLinus Torvalds #endif 8351da177e4SLinus Torvalds 8361da177e4SLinus Torvalds /* set ia64_ctx.max_rid to the maximum RID that is supported by all CPUs: */ 8371da177e4SLinus Torvalds if (ia64_pal_vm_summary(NULL, &vmi) == 0) 8381da177e4SLinus Torvalds max_ctx = (1U << (vmi.pal_vm_info_2_s.rid_size - 3)) - 1; 8391da177e4SLinus Torvalds else { 8401da177e4SLinus Torvalds printk(KERN_WARNING "cpu_init: PAL VM summary failed, assuming 18 RID bits\n"); 8411da177e4SLinus Torvalds max_ctx = (1U << 15) - 1; /* use architected minimum */ 8421da177e4SLinus Torvalds } 8431da177e4SLinus Torvalds while (max_ctx < ia64_ctx.max_ctx) { 8441da177e4SLinus Torvalds unsigned int old = ia64_ctx.max_ctx; 8451da177e4SLinus Torvalds if (cmpxchg(&ia64_ctx.max_ctx, old, max_ctx) == old) 8461da177e4SLinus Torvalds break; 8471da177e4SLinus Torvalds } 8481da177e4SLinus Torvalds 8491da177e4SLinus Torvalds if (ia64_pal_rse_info(&num_phys_stacked, NULL) != 0) { 8501da177e4SLinus Torvalds printk(KERN_WARNING "cpu_init: PAL RSE info failed; assuming 96 physical " 8511da177e4SLinus Torvalds "stacked regs\n"); 8521da177e4SLinus Torvalds num_phys_stacked = 96; 8531da177e4SLinus Torvalds } 8541da177e4SLinus Torvalds /* size of physical stacked register partition plus 8 bytes: */ 8551da177e4SLinus Torvalds __get_cpu_var(ia64_phys_stacked_size_p8) = num_phys_stacked*8 + 8; 8561da177e4SLinus Torvalds platform_cpu_init(); 8576c4fa560SVenkatesh Pallipadi pm_idle = default_idle; 8581da177e4SLinus Torvalds } 8591da177e4SLinus Torvalds 8601da177e4SLinus Torvalds void 8611da177e4SLinus Torvalds check_bugs (void) 8621da177e4SLinus Torvalds { 8631da177e4SLinus Torvalds ia64_patch_mckinley_e9((unsigned long) __start___mckinley_e9_bundles, 8641da177e4SLinus Torvalds (unsigned long) __end___mckinley_e9_bundles); 8651da177e4SLinus Torvalds } 866