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/console.h> 311da177e4SLinus Torvalds #include <linux/delay.h> 321777e463SIngo Molnar #include <linux/cpu.h> 33fa809d70SChristoph Hellwig #include <linux/kdev_t.h> 341da177e4SLinus Torvalds #include <linux/kernel.h> 35f6280099SMike Rapoport #include <linux/memblock.h> 361da177e4SLinus Torvalds #include <linux/reboot.h> 3768e21be2SIngo Molnar #include <linux/sched/mm.h> 38e6017571SIngo Molnar #include <linux/sched/clock.h> 3968db0cf1SIngo Molnar #include <linux/sched/task_stack.h> 401da177e4SLinus Torvalds #include <linux/seq_file.h> 411da177e4SLinus Torvalds #include <linux/string.h> 421da177e4SLinus Torvalds #include <linux/threads.h> 43894673eeSJon Smirl #include <linux/screen_info.h> 443ed3bce8SMatt Domsch #include <linux/dmi.h> 45fa809d70SChristoph Hellwig #include <linux/root_dev.h> 461da177e4SLinus Torvalds #include <linux/serial.h> 471da177e4SLinus Torvalds #include <linux/serial_core.h> 481da177e4SLinus Torvalds #include <linux/efi.h> 491da177e4SLinus Torvalds #include <linux/initrd.h> 506c4fa560SVenkatesh Pallipadi #include <linux/pm.h> 5195235ca2SVenkatesh Pallipadi #include <linux/cpufreq.h> 52a7956113SZou Nan hai #include <linux/kexec.h> 53a7956113SZou Nan hai #include <linux/crash_dump.h> 541da177e4SLinus Torvalds 551da177e4SLinus Torvalds #include <asm/machvec.h> 561da177e4SLinus Torvalds #include <asm/mca.h> 571da177e4SLinus Torvalds #include <asm/meminit.h> 581da177e4SLinus Torvalds #include <asm/page.h> 591da177e4SLinus Torvalds #include <asm/patch.h> 601da177e4SLinus Torvalds #include <asm/pgtable.h> 611da177e4SLinus Torvalds #include <asm/processor.h> 621da177e4SLinus Torvalds #include <asm/sal.h> 631da177e4SLinus Torvalds #include <asm/sections.h> 641da177e4SLinus Torvalds #include <asm/setup.h> 651da177e4SLinus Torvalds #include <asm/smp.h> 662046b94eSFenghua Yu #include <asm/tlbflush.h> 671da177e4SLinus Torvalds #include <asm/unistd.h> 681da177e4SLinus Torvalds 691da177e4SLinus Torvalds #if defined(CONFIG_SMP) && (IA64_CPU_SIZE > PAGE_SIZE) 701da177e4SLinus Torvalds # error "struct cpuinfo_ia64 too big!" 711da177e4SLinus Torvalds #endif 721da177e4SLinus Torvalds 731da177e4SLinus Torvalds #ifdef CONFIG_SMP 741da177e4SLinus Torvalds unsigned long __per_cpu_offset[NR_CPUS]; 751da177e4SLinus Torvalds EXPORT_SYMBOL(__per_cpu_offset); 761da177e4SLinus Torvalds #endif 771da177e4SLinus Torvalds 78877105ccSTejun Heo DEFINE_PER_CPU(struct cpuinfo_ia64, ia64_cpu_info); 79e007c533SAl Viro EXPORT_SYMBOL(ia64_cpu_info); 801da177e4SLinus Torvalds DEFINE_PER_CPU(unsigned long, local_per_cpu_offset); 81e007c533SAl Viro #ifdef CONFIG_SMP 82e007c533SAl Viro EXPORT_SYMBOL(local_per_cpu_offset); 83e007c533SAl Viro #endif 841da177e4SLinus Torvalds unsigned long ia64_cycles_per_usec; 851da177e4SLinus Torvalds struct ia64_boot_param *ia64_boot_param; 861da177e4SLinus Torvalds struct screen_info screen_info; 8766b7f8a3SMark Maule unsigned long vga_console_iobase; 8866b7f8a3SMark Maule unsigned long vga_console_membase; 891da177e4SLinus Torvalds 90be379124SKhalid Aziz static struct resource data_resource = { 91be379124SKhalid Aziz .name = "Kernel data", 9203cb525eSToshi Kani .flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM 93be379124SKhalid Aziz }; 94be379124SKhalid Aziz 95be379124SKhalid Aziz static struct resource code_resource = { 96be379124SKhalid Aziz .name = "Kernel code", 9703cb525eSToshi Kani .flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM 98be379124SKhalid Aziz }; 9900bf4098SBernhard Walle 10000bf4098SBernhard Walle static struct resource bss_resource = { 10100bf4098SBernhard Walle .name = "Kernel bss", 10203cb525eSToshi Kani .flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM 10300bf4098SBernhard Walle }; 104be379124SKhalid Aziz 1051da177e4SLinus Torvalds unsigned long ia64_max_cacheline_size; 106e1531b42SJohn W. Linville 1071da177e4SLinus Torvalds unsigned long ia64_iobase; /* virtual address for I/O accesses */ 1081da177e4SLinus Torvalds EXPORT_SYMBOL(ia64_iobase); 1091da177e4SLinus Torvalds struct io_space io_space[MAX_IO_SPACES]; 1101da177e4SLinus Torvalds EXPORT_SYMBOL(io_space); 1111da177e4SLinus Torvalds unsigned int num_io_spaces; 1121da177e4SLinus Torvalds 1131da177e4SLinus Torvalds /* 11408357f82SZoltan Menyhart * "flush_icache_range()" needs to know what processor dependent stride size to use 11508357f82SZoltan Menyhart * when it makes i-cache(s) coherent with d-caches. 11608357f82SZoltan Menyhart */ 11708357f82SZoltan Menyhart #define I_CACHE_STRIDE_SHIFT 5 /* Safest way to go: 32 bytes by 32 bytes */ 11808357f82SZoltan Menyhart unsigned long ia64_i_cache_stride_shift = ~0; 11962fdd767SFenghua Yu /* 12062fdd767SFenghua Yu * "clflush_cache_range()" needs to know what processor dependent stride size to 12162fdd767SFenghua Yu * use when it flushes cache lines including both d-cache and i-cache. 12262fdd767SFenghua Yu */ 12362fdd767SFenghua Yu /* Safest way to go: 32 bytes by 32 bytes */ 12462fdd767SFenghua Yu #define CACHE_STRIDE_SHIFT 5 12562fdd767SFenghua Yu unsigned long ia64_cache_stride_shift = ~0; 12608357f82SZoltan Menyhart 12708357f82SZoltan Menyhart /* 1281da177e4SLinus Torvalds * We use a special marker for the end of memory and it uses the extra (+1) slot 1291da177e4SLinus Torvalds */ 130dae28066SChen, Kenneth W struct rsvd_region rsvd_region[IA64_MAX_RSVD_REGIONS + 1] __initdata; 131dae28066SChen, Kenneth W int num_rsvd_regions __initdata; 1321da177e4SLinus Torvalds 1331da177e4SLinus Torvalds 1341da177e4SLinus Torvalds /* 1351da177e4SLinus Torvalds * Filter incoming memory segments based on the primitive map created from the boot 1361da177e4SLinus Torvalds * parameters. Segments contained in the map are removed from the memory ranges. A 1371da177e4SLinus Torvalds * caller-specified function is called with the memory ranges that remain after filtering. 1381da177e4SLinus Torvalds * This routine does not assume the incoming segments are sorted. 1391da177e4SLinus Torvalds */ 140dae28066SChen, Kenneth W int __init 141e088a4adSMatthew Wilcox filter_rsvd_memory (u64 start, u64 end, void *arg) 1421da177e4SLinus Torvalds { 143e088a4adSMatthew Wilcox u64 range_start, range_end, prev_start; 1441da177e4SLinus Torvalds void (*func)(unsigned long, unsigned long, int); 1451da177e4SLinus Torvalds int i; 1461da177e4SLinus Torvalds 1471da177e4SLinus Torvalds #if IGNORE_PFN0 1481da177e4SLinus Torvalds if (start == PAGE_OFFSET) { 1491da177e4SLinus Torvalds printk(KERN_WARNING "warning: skipping physical page 0\n"); 1501da177e4SLinus Torvalds start += PAGE_SIZE; 1511da177e4SLinus Torvalds if (start >= end) return 0; 1521da177e4SLinus Torvalds } 1531da177e4SLinus Torvalds #endif 1541da177e4SLinus Torvalds /* 1551da177e4SLinus Torvalds * lowest possible address(walker uses virtual) 1561da177e4SLinus Torvalds */ 1571da177e4SLinus Torvalds prev_start = PAGE_OFFSET; 1581da177e4SLinus Torvalds func = arg; 1591da177e4SLinus Torvalds 1601da177e4SLinus Torvalds for (i = 0; i < num_rsvd_regions; ++i) { 1611da177e4SLinus Torvalds range_start = max(start, prev_start); 1621da177e4SLinus Torvalds range_end = min(end, rsvd_region[i].start); 1631da177e4SLinus Torvalds 1641da177e4SLinus Torvalds if (range_start < range_end) 1651da177e4SLinus Torvalds call_pernode_memory(__pa(range_start), range_end - range_start, func); 1661da177e4SLinus Torvalds 1671da177e4SLinus Torvalds /* nothing more available in this segment */ 1681da177e4SLinus Torvalds if (range_end == end) return 0; 1691da177e4SLinus Torvalds 1701da177e4SLinus Torvalds prev_start = rsvd_region[i].end; 1711da177e4SLinus Torvalds } 1721da177e4SLinus Torvalds /* end of memory marker allows full processing inside loop body */ 1731da177e4SLinus Torvalds return 0; 1741da177e4SLinus Torvalds } 1751da177e4SLinus Torvalds 17698075d24SZoltan Menyhart /* 17798075d24SZoltan Menyhart * Similar to "filter_rsvd_memory()", but the reserved memory ranges 17898075d24SZoltan Menyhart * are not filtered out. 17998075d24SZoltan Menyhart */ 18098075d24SZoltan Menyhart int __init 181e088a4adSMatthew Wilcox filter_memory(u64 start, u64 end, void *arg) 18298075d24SZoltan Menyhart { 18398075d24SZoltan Menyhart void (*func)(unsigned long, unsigned long, int); 18498075d24SZoltan Menyhart 18598075d24SZoltan Menyhart #if IGNORE_PFN0 18698075d24SZoltan Menyhart if (start == PAGE_OFFSET) { 18798075d24SZoltan Menyhart printk(KERN_WARNING "warning: skipping physical page 0\n"); 18898075d24SZoltan Menyhart start += PAGE_SIZE; 18998075d24SZoltan Menyhart if (start >= end) 19098075d24SZoltan Menyhart return 0; 19198075d24SZoltan Menyhart } 19298075d24SZoltan Menyhart #endif 19398075d24SZoltan Menyhart func = arg; 19498075d24SZoltan Menyhart if (start < end) 19598075d24SZoltan Menyhart call_pernode_memory(__pa(start), end - start, func); 19698075d24SZoltan Menyhart return 0; 19798075d24SZoltan Menyhart } 19898075d24SZoltan Menyhart 199dae28066SChen, Kenneth W static void __init 2001da177e4SLinus Torvalds sort_regions (struct rsvd_region *rsvd_region, int max) 2011da177e4SLinus Torvalds { 2021da177e4SLinus Torvalds int j; 2031da177e4SLinus Torvalds 2041da177e4SLinus Torvalds /* simple bubble sorting */ 2051da177e4SLinus Torvalds while (max--) { 2061da177e4SLinus Torvalds for (j = 0; j < max; ++j) { 2071da177e4SLinus Torvalds if (rsvd_region[j].start > rsvd_region[j+1].start) { 2081da177e4SLinus Torvalds struct rsvd_region tmp; 2091da177e4SLinus Torvalds tmp = rsvd_region[j]; 2101da177e4SLinus Torvalds rsvd_region[j] = rsvd_region[j + 1]; 2111da177e4SLinus Torvalds rsvd_region[j + 1] = tmp; 2121da177e4SLinus Torvalds } 2131da177e4SLinus Torvalds } 2141da177e4SLinus Torvalds } 2151da177e4SLinus Torvalds } 2161da177e4SLinus Torvalds 21776d71ebdSPetr Tesarik /* merge overlaps */ 21876d71ebdSPetr Tesarik static int __init 21976d71ebdSPetr Tesarik merge_regions (struct rsvd_region *rsvd_region, int max) 22076d71ebdSPetr Tesarik { 22176d71ebdSPetr Tesarik int i; 22276d71ebdSPetr Tesarik for (i = 1; i < max; ++i) { 22376d71ebdSPetr Tesarik if (rsvd_region[i].start >= rsvd_region[i-1].end) 22476d71ebdSPetr Tesarik continue; 22576d71ebdSPetr Tesarik if (rsvd_region[i].end > rsvd_region[i-1].end) 22676d71ebdSPetr Tesarik rsvd_region[i-1].end = rsvd_region[i].end; 22776d71ebdSPetr Tesarik --max; 22876d71ebdSPetr Tesarik memmove(&rsvd_region[i], &rsvd_region[i+1], 22976d71ebdSPetr Tesarik (max - i) * sizeof(struct rsvd_region)); 23076d71ebdSPetr Tesarik } 23176d71ebdSPetr Tesarik return max; 23276d71ebdSPetr Tesarik } 23376d71ebdSPetr Tesarik 234be379124SKhalid Aziz /* 235be379124SKhalid Aziz * Request address space for all standard resources 236be379124SKhalid Aziz */ 237be379124SKhalid Aziz static int __init register_memory(void) 238be379124SKhalid Aziz { 239be379124SKhalid Aziz code_resource.start = ia64_tpa(_text); 240be379124SKhalid Aziz code_resource.end = ia64_tpa(_etext) - 1; 241be379124SKhalid Aziz data_resource.start = ia64_tpa(_etext); 24200bf4098SBernhard Walle data_resource.end = ia64_tpa(_edata) - 1; 243b898a424SBernhard Walle bss_resource.start = ia64_tpa(__bss_start); 24400bf4098SBernhard Walle bss_resource.end = ia64_tpa(_end) - 1; 24500bf4098SBernhard Walle efi_initialize_iomem_resources(&code_resource, &data_resource, 24600bf4098SBernhard Walle &bss_resource); 247be379124SKhalid Aziz 248be379124SKhalid Aziz return 0; 249be379124SKhalid Aziz } 250be379124SKhalid Aziz 251be379124SKhalid Aziz __initcall(register_memory); 252be379124SKhalid Aziz 253cb380853SBernhard Walle 254cb380853SBernhard Walle #ifdef CONFIG_KEXEC 2558a3360f0SBernhard Walle 2568a3360f0SBernhard Walle /* 2578a3360f0SBernhard Walle * This function checks if the reserved crashkernel is allowed on the specific 2588a3360f0SBernhard Walle * IA64 machine flavour. Machines without an IO TLB use swiotlb and require 2598a3360f0SBernhard Walle * some memory below 4 GB (i.e. in 32 bit area), see the implementation of 2608a3360f0SBernhard Walle * lib/swiotlb.c. The hpzx1 architecture has an IO TLB but cannot use that 2618a3360f0SBernhard Walle * in kdump case. See the comment in sba_init() in sba_iommu.c. 2628a3360f0SBernhard Walle * 2638a3360f0SBernhard Walle * So, the only machvec that really supports loading the kdump kernel 264cf07cb1fSChristoph Hellwig * over 4 GB is "uv". 2658a3360f0SBernhard Walle */ 2668a3360f0SBernhard Walle static int __init check_crashkernel_memory(unsigned long pbase, size_t size) 2678a3360f0SBernhard Walle { 268cf07cb1fSChristoph Hellwig if (ia64_platform_is("uv")) 2698a3360f0SBernhard Walle return 1; 2708a3360f0SBernhard Walle else 2718a3360f0SBernhard Walle return pbase < (1UL << 32); 2728a3360f0SBernhard Walle } 2738a3360f0SBernhard Walle 274cb380853SBernhard Walle static void __init setup_crashkernel(unsigned long total, int *n) 275cb380853SBernhard Walle { 276cb380853SBernhard Walle unsigned long long base = 0, size = 0; 277cb380853SBernhard Walle int ret; 278cb380853SBernhard Walle 279cb380853SBernhard Walle ret = parse_crashkernel(boot_command_line, total, 280cb380853SBernhard Walle &size, &base); 281cb380853SBernhard Walle if (ret == 0 && size > 0) { 282cb380853SBernhard Walle if (!base) { 283cb380853SBernhard Walle sort_regions(rsvd_region, *n); 28476d71ebdSPetr Tesarik *n = merge_regions(rsvd_region, *n); 285cb380853SBernhard Walle base = kdump_find_rsvd_region(size, 286cb380853SBernhard Walle rsvd_region, *n); 287cb380853SBernhard Walle } 2888a3360f0SBernhard Walle 2898a3360f0SBernhard Walle if (!check_crashkernel_memory(base, size)) { 2908a3360f0SBernhard Walle pr_warning("crashkernel: There would be kdump memory " 2918a3360f0SBernhard Walle "at %ld GB but this is unusable because it " 2928a3360f0SBernhard Walle "must\nbe below 4 GB. Change the memory " 2938a3360f0SBernhard Walle "configuration of the machine.\n", 2948a3360f0SBernhard Walle (unsigned long)(base >> 30)); 2958a3360f0SBernhard Walle return; 2968a3360f0SBernhard Walle } 2978a3360f0SBernhard Walle 298cb380853SBernhard Walle if (base != ~0UL) { 299cb380853SBernhard Walle printk(KERN_INFO "Reserving %ldMB of memory at %ldMB " 300cb380853SBernhard Walle "for crashkernel (System RAM: %ldMB)\n", 301cb380853SBernhard Walle (unsigned long)(size >> 20), 302cb380853SBernhard Walle (unsigned long)(base >> 20), 303cb380853SBernhard Walle (unsigned long)(total >> 20)); 304cb380853SBernhard Walle rsvd_region[*n].start = 305cb380853SBernhard Walle (unsigned long)__va(base); 306cb380853SBernhard Walle rsvd_region[*n].end = 307cb380853SBernhard Walle (unsigned long)__va(base + size); 308cb380853SBernhard Walle (*n)++; 309cb380853SBernhard Walle crashk_res.start = base; 310cb380853SBernhard Walle crashk_res.end = base + size - 1; 311cb380853SBernhard Walle } 312cb380853SBernhard Walle } 313cb380853SBernhard Walle efi_memmap_res.start = ia64_boot_param->efi_memmap; 314cb380853SBernhard Walle efi_memmap_res.end = efi_memmap_res.start + 315cb380853SBernhard Walle ia64_boot_param->efi_memmap_size; 316cb380853SBernhard Walle boot_param_res.start = __pa(ia64_boot_param); 317cb380853SBernhard Walle boot_param_res.end = boot_param_res.start + 318cb380853SBernhard Walle sizeof(*ia64_boot_param); 319cb380853SBernhard Walle } 320cb380853SBernhard Walle #else 321cb380853SBernhard Walle static inline void __init setup_crashkernel(unsigned long total, int *n) 322cb380853SBernhard Walle {} 323cb380853SBernhard Walle #endif 324cb380853SBernhard Walle 3251da177e4SLinus Torvalds /** 3261da177e4SLinus Torvalds * reserve_memory - setup reserved memory areas 3271da177e4SLinus Torvalds * 3281da177e4SLinus Torvalds * Setup the reserved memory areas set aside for the boot parameters, 3291da177e4SLinus Torvalds * initrd, etc. There are currently %IA64_MAX_RSVD_REGIONS defined, 3307f30491cSTony Luck * see arch/ia64/include/asm/meminit.h if you need to define more. 3311da177e4SLinus Torvalds */ 332dae28066SChen, Kenneth W void __init 3331da177e4SLinus Torvalds reserve_memory (void) 3341da177e4SLinus Torvalds { 3351da177e4SLinus Torvalds int n = 0; 336cb380853SBernhard Walle unsigned long total_memory; 3371da177e4SLinus Torvalds 3381da177e4SLinus Torvalds /* 3391da177e4SLinus Torvalds * none of the entries in this table overlap 3401da177e4SLinus Torvalds */ 3411da177e4SLinus Torvalds rsvd_region[n].start = (unsigned long) ia64_boot_param; 3421da177e4SLinus Torvalds rsvd_region[n].end = rsvd_region[n].start + sizeof(*ia64_boot_param); 3431da177e4SLinus Torvalds n++; 3441da177e4SLinus Torvalds 3451da177e4SLinus Torvalds rsvd_region[n].start = (unsigned long) __va(ia64_boot_param->efi_memmap); 3461da177e4SLinus Torvalds rsvd_region[n].end = rsvd_region[n].start + ia64_boot_param->efi_memmap_size; 3471da177e4SLinus Torvalds n++; 3481da177e4SLinus Torvalds 3491da177e4SLinus Torvalds rsvd_region[n].start = (unsigned long) __va(ia64_boot_param->command_line); 3501da177e4SLinus Torvalds rsvd_region[n].end = (rsvd_region[n].start 3511da177e4SLinus Torvalds + strlen(__va(ia64_boot_param->command_line)) + 1); 3521da177e4SLinus Torvalds n++; 3531da177e4SLinus Torvalds 3541da177e4SLinus Torvalds rsvd_region[n].start = (unsigned long) ia64_imva((void *)KERNEL_START); 3551da177e4SLinus Torvalds rsvd_region[n].end = (unsigned long) ia64_imva(_end); 3561da177e4SLinus Torvalds n++; 3571da177e4SLinus Torvalds 3581da177e4SLinus Torvalds #ifdef CONFIG_BLK_DEV_INITRD 3591da177e4SLinus Torvalds if (ia64_boot_param->initrd_start) { 3601da177e4SLinus Torvalds rsvd_region[n].start = (unsigned long)__va(ia64_boot_param->initrd_start); 3611da177e4SLinus Torvalds rsvd_region[n].end = rsvd_region[n].start + ia64_boot_param->initrd_size; 3621da177e4SLinus Torvalds n++; 3631da177e4SLinus Torvalds } 3641da177e4SLinus Torvalds #endif 3651da177e4SLinus Torvalds 36617c1f07eSJay Lan #ifdef CONFIG_CRASH_DUMP 367cee87af2SMagnus Damm if (reserve_elfcorehdr(&rsvd_region[n].start, 368cee87af2SMagnus Damm &rsvd_region[n].end) == 0) 369cee87af2SMagnus Damm n++; 370cee87af2SMagnus Damm #endif 371cee87af2SMagnus Damm 372cb380853SBernhard Walle total_memory = efi_memmap_init(&rsvd_region[n].start, &rsvd_region[n].end); 373d8c97d5fSTony Luck n++; 374d8c97d5fSTony Luck 375cb380853SBernhard Walle setup_crashkernel(total_memory, &n); 376cb380853SBernhard Walle 3771da177e4SLinus Torvalds /* end of memory marker */ 3781da177e4SLinus Torvalds rsvd_region[n].start = ~0UL; 3791da177e4SLinus Torvalds rsvd_region[n].end = ~0UL; 3801da177e4SLinus Torvalds n++; 3811da177e4SLinus Torvalds 3821da177e4SLinus Torvalds num_rsvd_regions = n; 3835eb1d63fSAlex Williamson BUG_ON(IA64_MAX_RSVD_REGIONS + 1 < n); 3841da177e4SLinus Torvalds 3851da177e4SLinus Torvalds sort_regions(rsvd_region, num_rsvd_regions); 38676d71ebdSPetr Tesarik num_rsvd_regions = merge_regions(rsvd_region, num_rsvd_regions); 3871da177e4SLinus Torvalds 388f6280099SMike Rapoport /* reserve all regions except the end of memory marker with memblock */ 389f6280099SMike Rapoport for (n = 0; n < num_rsvd_regions - 1; n++) { 390f6280099SMike Rapoport struct rsvd_region *region = &rsvd_region[n]; 391f6280099SMike Rapoport phys_addr_t addr = __pa(region->start); 392f6280099SMike Rapoport phys_addr_t size = region->end - region->start; 393f6280099SMike Rapoport 394f6280099SMike Rapoport memblock_reserve(addr, size); 395f6280099SMike Rapoport } 396f6280099SMike Rapoport } 397a7956113SZou Nan hai 3981da177e4SLinus Torvalds /** 3991da177e4SLinus Torvalds * find_initrd - get initrd parameters from the boot parameter structure 4001da177e4SLinus Torvalds * 4011da177e4SLinus Torvalds * Grab the initrd start and end from the boot parameter struct given us by 4021da177e4SLinus Torvalds * the boot loader. 4031da177e4SLinus Torvalds */ 404dae28066SChen, Kenneth W void __init 4051da177e4SLinus Torvalds find_initrd (void) 4061da177e4SLinus Torvalds { 4071da177e4SLinus Torvalds #ifdef CONFIG_BLK_DEV_INITRD 4081da177e4SLinus Torvalds if (ia64_boot_param->initrd_start) { 4091da177e4SLinus Torvalds initrd_start = (unsigned long)__va(ia64_boot_param->initrd_start); 4101da177e4SLinus Torvalds initrd_end = initrd_start+ia64_boot_param->initrd_size; 4111da177e4SLinus Torvalds 412e088a4adSMatthew Wilcox printk(KERN_INFO "Initial ramdisk at: 0x%lx (%llu bytes)\n", 4131da177e4SLinus Torvalds initrd_start, ia64_boot_param->initrd_size); 4141da177e4SLinus Torvalds } 4151da177e4SLinus Torvalds #endif 4161da177e4SLinus Torvalds } 4171da177e4SLinus Torvalds 4181da177e4SLinus Torvalds static void __init 4191da177e4SLinus Torvalds io_port_init (void) 4201da177e4SLinus Torvalds { 4211da177e4SLinus Torvalds unsigned long phys_iobase; 4221da177e4SLinus Torvalds 4231da177e4SLinus Torvalds /* 42444c45120SBjorn Helgaas * Set `iobase' based on the EFI memory map or, failing that, the 42544c45120SBjorn Helgaas * value firmware left in ar.k0. 4261da177e4SLinus Torvalds * 42744c45120SBjorn Helgaas * Note that in ia32 mode, IN/OUT instructions use ar.k0 to compute 42844c45120SBjorn Helgaas * the port's virtual address, so ia32_load_state() loads it with a 42944c45120SBjorn Helgaas * user virtual address. But in ia64 mode, glibc uses the 43044c45120SBjorn Helgaas * *physical* address in ar.k0 to mmap the appropriate area from 43144c45120SBjorn Helgaas * /dev/mem, and the inX()/outX() interfaces use MMIO. In both 43244c45120SBjorn Helgaas * cases, user-mode can only use the legacy 0-64K I/O port space. 43344c45120SBjorn Helgaas * 43444c45120SBjorn Helgaas * ar.k0 is not involved in kernel I/O port accesses, which can use 43544c45120SBjorn Helgaas * any of the I/O port spaces and are done via MMIO using the 43644c45120SBjorn Helgaas * virtual mmio_base from the appropriate io_space[]. 4371da177e4SLinus Torvalds */ 4381da177e4SLinus Torvalds phys_iobase = efi_get_iobase(); 43944c45120SBjorn Helgaas if (!phys_iobase) { 4401da177e4SLinus Torvalds phys_iobase = ia64_get_kr(IA64_KR_IO_BASE); 44144c45120SBjorn Helgaas printk(KERN_INFO "No I/O port range found in EFI memory map, " 44244c45120SBjorn Helgaas "falling back to AR.KR0 (0x%lx)\n", phys_iobase); 4431da177e4SLinus Torvalds } 4441da177e4SLinus Torvalds ia64_iobase = (unsigned long) ioremap(phys_iobase, 0); 44544c45120SBjorn Helgaas ia64_set_kr(IA64_KR_IO_BASE, __pa(ia64_iobase)); 4461da177e4SLinus Torvalds 4471da177e4SLinus Torvalds /* setup legacy IO port space */ 4481da177e4SLinus Torvalds io_space[0].mmio_base = ia64_iobase; 4491da177e4SLinus Torvalds io_space[0].sparse = 1; 4501da177e4SLinus Torvalds num_io_spaces = 1; 4511da177e4SLinus Torvalds } 4521da177e4SLinus Torvalds 4531da177e4SLinus Torvalds /** 4541da177e4SLinus Torvalds * early_console_setup - setup debugging console 4551da177e4SLinus Torvalds * 4561da177e4SLinus Torvalds * Consoles started here require little enough setup that we can start using 4571da177e4SLinus Torvalds * them very early in the boot process, either right after the machine 4581da177e4SLinus Torvalds * vector initialization, or even before if the drivers can detect their hw. 4591da177e4SLinus Torvalds * 4601da177e4SLinus Torvalds * Returns non-zero if a console couldn't be setup. 4611da177e4SLinus Torvalds */ 4621da177e4SLinus Torvalds static inline int __init 4631da177e4SLinus Torvalds early_console_setup (char *cmdline) 4641da177e4SLinus Torvalds { 4651da177e4SLinus Torvalds #ifdef CONFIG_EFI_PCDP 4661da177e4SLinus Torvalds if (!efi_setup_pcdp_console(cmdline)) 467fc5bad03SChristoph Hellwig return 0; 4681da177e4SLinus Torvalds #endif 469fc5bad03SChristoph Hellwig return -1; 4701da177e4SLinus Torvalds } 4711da177e4SLinus Torvalds 4721da177e4SLinus Torvalds static inline void 4731da177e4SLinus Torvalds mark_bsp_online (void) 4741da177e4SLinus Torvalds { 4751da177e4SLinus Torvalds #ifdef CONFIG_SMP 4761da177e4SLinus Torvalds /* If we register an early console, allow CPU 0 to printk */ 4777d7f9848SSrivatsa S. Bhat set_cpu_online(smp_processor_id(), true); 4781da177e4SLinus Torvalds #endif 4791da177e4SLinus Torvalds } 4801da177e4SLinus Torvalds 481a5b00bb4SHorms static __initdata int nomca; 482a5b00bb4SHorms static __init int setup_nomca(char *s) 483a5b00bb4SHorms { 484a5b00bb4SHorms nomca = 1; 485a5b00bb4SHorms return 0; 486a5b00bb4SHorms } 487a5b00bb4SHorms early_param("nomca", setup_nomca); 488a5b00bb4SHorms 48957cac4d1SVivek Goyal #ifdef CONFIG_CRASH_DUMP 490e088a4adSMatthew Wilcox int __init reserve_elfcorehdr(u64 *start, u64 *end) 491cee87af2SMagnus Damm { 492e088a4adSMatthew Wilcox u64 length; 493cee87af2SMagnus Damm 494cee87af2SMagnus Damm /* We get the address using the kernel command line, 495cee87af2SMagnus Damm * but the size is extracted from the EFI tables. 496cee87af2SMagnus Damm * Both address and size are required for reservation 497cee87af2SMagnus Damm * to work properly. 498cee87af2SMagnus Damm */ 499cee87af2SMagnus Damm 50085a0ee34SSimon Horman if (!is_vmcore_usable()) 501cee87af2SMagnus Damm return -EINVAL; 502cee87af2SMagnus Damm 503cee87af2SMagnus Damm if ((length = vmcore_find_descriptor_size(elfcorehdr_addr)) == 0) { 50485a0ee34SSimon Horman vmcore_unusable(); 505cee87af2SMagnus Damm return -EINVAL; 506cee87af2SMagnus Damm } 507cee87af2SMagnus Damm 508cee87af2SMagnus Damm *start = (unsigned long)__va(elfcorehdr_addr); 509cee87af2SMagnus Damm *end = *start + length; 510cee87af2SMagnus Damm return 0; 511cee87af2SMagnus Damm } 512cee87af2SMagnus Damm 51345a98fc6SHorms #endif /* CONFIG_PROC_VMCORE */ 51445a98fc6SHorms 5151da177e4SLinus Torvalds void __init 5161da177e4SLinus Torvalds setup_arch (char **cmdline_p) 5171da177e4SLinus Torvalds { 5181da177e4SLinus Torvalds unw_init(); 5191da177e4SLinus Torvalds 5201da177e4SLinus Torvalds ia64_patch_vtop((u64) __start___vtop_patchlist, (u64) __end___vtop_patchlist); 5211da177e4SLinus Torvalds 5221da177e4SLinus Torvalds *cmdline_p = __va(ia64_boot_param->command_line); 523a8d91b84SAlon Bar-Lev strlcpy(boot_command_line, *cmdline_p, COMMAND_LINE_SIZE); 5241da177e4SLinus Torvalds 5251da177e4SLinus Torvalds efi_init(); 5261da177e4SLinus Torvalds io_port_init(); 5271da177e4SLinus Torvalds 5281da177e4SLinus Torvalds #ifdef CONFIG_IA64_GENERIC 529a07ee862SHorms /* machvec needs to be parsed from the command line 530a07ee862SHorms * before parse_early_param() is called to ensure 531a07ee862SHorms * that ia64_mv is initialised before any command line 532a07ee862SHorms * settings may cause console setup to occur 533a07ee862SHorms */ 534a07ee862SHorms machvec_init_from_cmdline(*cmdline_p); 5351da177e4SLinus Torvalds #endif 5361da177e4SLinus Torvalds 537a07ee862SHorms parse_early_param(); 538a07ee862SHorms 5391da177e4SLinus Torvalds if (early_console_setup(*cmdline_p) == 0) 5401da177e4SLinus Torvalds mark_bsp_online(); 5411da177e4SLinus Torvalds 5421da177e4SLinus Torvalds /* Initialize the ACPI boot-time table parser */ 5431da177e4SLinus Torvalds acpi_table_init(); 54462ee0540SDoug Chapman early_acpi_boot_init(); 5451da177e4SLinus Torvalds #ifdef CONFIG_ACPI_NUMA 5461da177e4SLinus Torvalds acpi_numa_init(); 547312521d0SRobert Richter acpi_numa_fixup(); 54862ee0540SDoug Chapman #ifdef CONFIG_ACPI_HOTPLUG_CPU 54962ee0540SDoug Chapman prefill_possible_map(); 55062ee0540SDoug Chapman #endif 5515d2068daSRusty Russell per_cpu_scan_finalize((cpumask_weight(&early_cpu_possible_map) == 0 ? 5525d2068daSRusty Russell 32 : cpumask_weight(&early_cpu_possible_map)), 553dd4f0888STony Luck additional_cpus > 0 ? additional_cpus : 0); 5542e0f2b16SChristoph Hellwig #endif /* CONFIG_ACPI_NUMA */ 5551da177e4SLinus Torvalds 55612cda817STejun Heo #ifdef CONFIG_SMP 55712cda817STejun Heo smp_build_cpu_map(); 55812cda817STejun Heo #endif 5591da177e4SLinus Torvalds find_memory(); 5601da177e4SLinus Torvalds 5611da177e4SLinus Torvalds /* process SAL system table: */ 562b2c99e3cSBjorn Helgaas ia64_sal_init(__va(efi.sal_systab)); 5631da177e4SLinus Torvalds 5644dcc29e1STony Luck #ifdef CONFIG_ITANIUM 5654dcc29e1STony Luck ia64_patch_rse((u64) __start___rse_patchlist, (u64) __end___rse_patchlist); 5664dcc29e1STony Luck #else 5674dcc29e1STony Luck { 568e088a4adSMatthew Wilcox unsigned long num_phys_stacked; 5694dcc29e1STony Luck 5704dcc29e1STony Luck if (ia64_pal_rse_info(&num_phys_stacked, 0) == 0 && num_phys_stacked > 96) 5714dcc29e1STony Luck ia64_patch_rse((u64) __start___rse_patchlist, (u64) __end___rse_patchlist); 5724dcc29e1STony Luck } 5734dcc29e1STony Luck #endif 5744dcc29e1STony Luck 5751da177e4SLinus Torvalds #ifdef CONFIG_SMP 5761da177e4SLinus Torvalds cpu_physical_id(0) = hard_smp_processor_id(); 5771da177e4SLinus Torvalds #endif 5781da177e4SLinus Torvalds 5791da177e4SLinus Torvalds cpu_init(); /* initialize the bootstrap CPU */ 580dcc17d1bSPeter Keilty mmu_context_init(); /* initialize context_id bitmap */ 5811da177e4SLinus Torvalds 5821da177e4SLinus Torvalds #ifdef CONFIG_VT 5831da177e4SLinus Torvalds if (!conswitchp) { 5841da177e4SLinus Torvalds # if defined(CONFIG_DUMMY_CONSOLE) 5851da177e4SLinus Torvalds conswitchp = &dummy_con; 5861da177e4SLinus Torvalds # endif 5871da177e4SLinus Torvalds # if defined(CONFIG_VGA_CONSOLE) 5881da177e4SLinus Torvalds /* 5891da177e4SLinus Torvalds * Non-legacy systems may route legacy VGA MMIO range to system 5901da177e4SLinus Torvalds * memory. vga_con probes the MMIO hole, so memory looks like 5911da177e4SLinus Torvalds * a VGA device to it. The EFI memory map can tell us if it's 5921da177e4SLinus Torvalds * memory so we can avoid this problem. 5931da177e4SLinus Torvalds */ 5941da177e4SLinus Torvalds if (efi_mem_type(0xA0000) != EFI_CONVENTIONAL_MEMORY) 5951da177e4SLinus Torvalds conswitchp = &vga_con; 5961da177e4SLinus Torvalds # endif 5971da177e4SLinus Torvalds } 5981da177e4SLinus Torvalds #endif 5991da177e4SLinus Torvalds 6001da177e4SLinus Torvalds /* enable IA-64 Machine Check Abort Handling unless disabled */ 601a5b00bb4SHorms if (!nomca) 6021da177e4SLinus Torvalds ia64_mca_init(); 6031da177e4SLinus Torvalds 604fa809d70SChristoph Hellwig /* 605fa809d70SChristoph Hellwig * Default to /dev/sda2. This assumes that the EFI partition 606fa809d70SChristoph Hellwig * is physical disk 1 partition 1 and the Linux root disk is 607fa809d70SChristoph Hellwig * physical disk 1 partition 2. 608fa809d70SChristoph Hellwig */ 609fa809d70SChristoph Hellwig ROOT_DEV = Root_SDA2; /* default to second partition on first drive */ 610fa809d70SChristoph Hellwig 6111da177e4SLinus Torvalds platform_setup(cmdline_p); 6121da177e4SLinus Torvalds paging_init(); 613acb04058SPeter Zijlstra 614acb04058SPeter Zijlstra clear_sched_clock_stable(); 6151da177e4SLinus Torvalds } 6161da177e4SLinus Torvalds 6171da177e4SLinus Torvalds /* 61872fdbdceSSimon Arlott * Display cpu info for all CPUs. 6191da177e4SLinus Torvalds */ 6201da177e4SLinus Torvalds static int 6211da177e4SLinus Torvalds show_cpuinfo (struct seq_file *m, void *v) 6221da177e4SLinus Torvalds { 6231da177e4SLinus Torvalds #ifdef CONFIG_SMP 6241da177e4SLinus Torvalds # define lpj c->loops_per_jiffy 6251da177e4SLinus Torvalds # define cpunum c->cpu 6261da177e4SLinus Torvalds #else 6271da177e4SLinus Torvalds # define lpj loops_per_jiffy 6281da177e4SLinus Torvalds # define cpunum 0 6291da177e4SLinus Torvalds #endif 6301da177e4SLinus Torvalds static struct { 6311da177e4SLinus Torvalds unsigned long mask; 6321da177e4SLinus Torvalds const char *feature_name; 6331da177e4SLinus Torvalds } feature_bits[] = { 6341da177e4SLinus Torvalds { 1UL << 0, "branchlong" }, 6351da177e4SLinus Torvalds { 1UL << 1, "spontaneous deferral"}, 6361da177e4SLinus Torvalds { 1UL << 2, "16-byte atomic ops" } 6371da177e4SLinus Torvalds }; 638ae0af3e3SAron Griffis char features[128], *cp, *sep; 6391da177e4SLinus Torvalds struct cpuinfo_ia64 *c = v; 6401da177e4SLinus Torvalds unsigned long mask; 64138c0b2c2STony Luck unsigned long proc_freq; 642ae0af3e3SAron Griffis int i, size; 6431da177e4SLinus Torvalds 6441da177e4SLinus Torvalds mask = c->features; 6451da177e4SLinus Torvalds 6461da177e4SLinus Torvalds /* build the feature string: */ 647ae0af3e3SAron Griffis memcpy(features, "standard", 9); 6481da177e4SLinus Torvalds cp = features; 649ae0af3e3SAron Griffis size = sizeof(features); 650ae0af3e3SAron Griffis sep = ""; 651ae0af3e3SAron Griffis for (i = 0; i < ARRAY_SIZE(feature_bits) && size > 1; ++i) { 6521da177e4SLinus Torvalds if (mask & feature_bits[i].mask) { 653ae0af3e3SAron Griffis cp += snprintf(cp, size, "%s%s", sep, 654ae0af3e3SAron Griffis feature_bits[i].feature_name), 655ae0af3e3SAron Griffis sep = ", "; 6561da177e4SLinus Torvalds mask &= ~feature_bits[i].mask; 657ae0af3e3SAron Griffis size = sizeof(features) - (cp - features); 6581da177e4SLinus Torvalds } 6591da177e4SLinus Torvalds } 660ae0af3e3SAron Griffis if (mask && size > 1) { 661ae0af3e3SAron Griffis /* print unknown features as a hex value */ 662ae0af3e3SAron Griffis snprintf(cp, size, "%s0x%lx", sep, mask); 6631da177e4SLinus Torvalds } 6641da177e4SLinus Torvalds 66595235ca2SVenkatesh Pallipadi proc_freq = cpufreq_quick_get(cpunum); 66695235ca2SVenkatesh Pallipadi if (!proc_freq) 66795235ca2SVenkatesh Pallipadi proc_freq = c->proc_freq / 1000; 66895235ca2SVenkatesh Pallipadi 6691da177e4SLinus Torvalds seq_printf(m, 6701da177e4SLinus Torvalds "processor : %d\n" 6711da177e4SLinus Torvalds "vendor : %s\n" 6721da177e4SLinus Torvalds "arch : IA-64\n" 67376d08bb3STony Luck "family : %u\n" 6741da177e4SLinus Torvalds "model : %u\n" 67576d08bb3STony Luck "model name : %s\n" 6761da177e4SLinus Torvalds "revision : %u\n" 6771da177e4SLinus Torvalds "archrev : %u\n" 678ae0af3e3SAron Griffis "features : %s\n" 6791da177e4SLinus Torvalds "cpu number : %lu\n" 6801da177e4SLinus Torvalds "cpu regs : %u\n" 6818a3a78d1SVenki Pallipadi "cpu MHz : %lu.%03lu\n" 6821da177e4SLinus Torvalds "itc MHz : %lu.%06lu\n" 683e927ecb0SSuresh Siddha "BogoMIPS : %lu.%02lu\n", 68476d08bb3STony Luck cpunum, c->vendor, c->family, c->model, 68576d08bb3STony Luck c->model_name, c->revision, c->archrev, 6861da177e4SLinus Torvalds features, c->ppn, c->number, 68795235ca2SVenkatesh Pallipadi proc_freq / 1000, proc_freq % 1000, 6881da177e4SLinus Torvalds c->itc_freq / 1000000, c->itc_freq % 1000000, 6891da177e4SLinus Torvalds lpj*HZ/500000, (lpj*HZ/5000) % 100); 690e927ecb0SSuresh Siddha #ifdef CONFIG_SMP 6915d2068daSRusty Russell seq_printf(m, "siblings : %u\n", 6925d2068daSRusty Russell cpumask_weight(&cpu_core_map[cpunum])); 693113134fcSAlex Chiang if (c->socket_id != -1) 694113134fcSAlex Chiang seq_printf(m, "physical id: %u\n", c->socket_id); 695e927ecb0SSuresh Siddha if (c->threads_per_core > 1 || c->cores_per_socket > 1) 696e927ecb0SSuresh Siddha seq_printf(m, 697e927ecb0SSuresh Siddha "core id : %u\n" 698e927ecb0SSuresh Siddha "thread id : %u\n", 699113134fcSAlex Chiang c->core_id, c->thread_id); 700e927ecb0SSuresh Siddha #endif 701e927ecb0SSuresh Siddha seq_printf(m,"\n"); 702e927ecb0SSuresh Siddha 7031da177e4SLinus Torvalds return 0; 7041da177e4SLinus Torvalds } 7051da177e4SLinus Torvalds 7061da177e4SLinus Torvalds static void * 7071da177e4SLinus Torvalds c_start (struct seq_file *m, loff_t *pos) 7081da177e4SLinus Torvalds { 7091da177e4SLinus Torvalds #ifdef CONFIG_SMP 7105dd3c994SRusty Russell while (*pos < nr_cpu_ids && !cpu_online(*pos)) 7111da177e4SLinus Torvalds ++*pos; 7121da177e4SLinus Torvalds #endif 7135dd3c994SRusty Russell return *pos < nr_cpu_ids ? cpu_data(*pos) : NULL; 7141da177e4SLinus Torvalds } 7151da177e4SLinus Torvalds 7161da177e4SLinus Torvalds static void * 7171da177e4SLinus Torvalds c_next (struct seq_file *m, void *v, loff_t *pos) 7181da177e4SLinus Torvalds { 7191da177e4SLinus Torvalds ++*pos; 7201da177e4SLinus Torvalds return c_start(m, pos); 7211da177e4SLinus Torvalds } 7221da177e4SLinus Torvalds 7231da177e4SLinus Torvalds static void 7241da177e4SLinus Torvalds c_stop (struct seq_file *m, void *v) 7251da177e4SLinus Torvalds { 7261da177e4SLinus Torvalds } 7271da177e4SLinus Torvalds 728a23fe55eSJan Engelhardt const struct seq_operations cpuinfo_op = { 7291da177e4SLinus Torvalds .start = c_start, 7301da177e4SLinus Torvalds .next = c_next, 7311da177e4SLinus Torvalds .stop = c_stop, 7321da177e4SLinus Torvalds .show = show_cpuinfo 7331da177e4SLinus Torvalds }; 7341da177e4SLinus Torvalds 735c5e83e3fSJack Steiner #define MAX_BRANDS 8 736c5e83e3fSJack Steiner static char brandname[MAX_BRANDS][128]; 73776d08bb3STony Luck 738ccce9bb8SPaul Gortmaker static char * 73976d08bb3STony Luck get_model_name(__u8 family, __u8 model) 74076d08bb3STony Luck { 741c5e83e3fSJack Steiner static int overflow; 74276d08bb3STony Luck char brand[128]; 743c5e83e3fSJack Steiner int i; 74476d08bb3STony Luck 74575f6a1deSTony Luck memcpy(brand, "Unknown", 8); 74676d08bb3STony Luck if (ia64_pal_get_brand_info(brand)) { 74776d08bb3STony Luck if (family == 0x7) 74876d08bb3STony Luck memcpy(brand, "Merced", 7); 74976d08bb3STony Luck else if (family == 0x1f) switch (model) { 75076d08bb3STony Luck case 0: memcpy(brand, "McKinley", 9); break; 75176d08bb3STony Luck case 1: memcpy(brand, "Madison", 8); break; 75276d08bb3STony Luck case 2: memcpy(brand, "Madison up to 9M cache", 23); break; 75375f6a1deSTony Luck } 75476d08bb3STony Luck } 755c5e83e3fSJack Steiner for (i = 0; i < MAX_BRANDS; i++) 756c5e83e3fSJack Steiner if (strcmp(brandname[i], brand) == 0) 757c5e83e3fSJack Steiner return brandname[i]; 758c5e83e3fSJack Steiner for (i = 0; i < MAX_BRANDS; i++) 759c5e83e3fSJack Steiner if (brandname[i][0] == '\0') 760c5e83e3fSJack Steiner return strcpy(brandname[i], brand); 761c5e83e3fSJack Steiner if (overflow++ == 0) 762c5e83e3fSJack Steiner printk(KERN_ERR 763c5e83e3fSJack Steiner "%s: Table overflow. Some processor model information will be missing\n", 764d4ed8084SHarvey Harrison __func__); 765c5e83e3fSJack Steiner return "Unknown"; 76676d08bb3STony Luck } 76776d08bb3STony Luck 768ccce9bb8SPaul Gortmaker static void 7691da177e4SLinus Torvalds identify_cpu (struct cpuinfo_ia64 *c) 7701da177e4SLinus Torvalds { 7711da177e4SLinus Torvalds union { 7721da177e4SLinus Torvalds unsigned long bits[5]; 7731da177e4SLinus Torvalds struct { 7741da177e4SLinus Torvalds /* id 0 & 1: */ 7751da177e4SLinus Torvalds char vendor[16]; 7761da177e4SLinus Torvalds 7771da177e4SLinus Torvalds /* id 2 */ 7781da177e4SLinus Torvalds u64 ppn; /* processor serial number */ 7791da177e4SLinus Torvalds 7801da177e4SLinus Torvalds /* id 3: */ 7811da177e4SLinus Torvalds unsigned number : 8; 7821da177e4SLinus Torvalds unsigned revision : 8; 7831da177e4SLinus Torvalds unsigned model : 8; 7841da177e4SLinus Torvalds unsigned family : 8; 7851da177e4SLinus Torvalds unsigned archrev : 8; 7861da177e4SLinus Torvalds unsigned reserved : 24; 7871da177e4SLinus Torvalds 7881da177e4SLinus Torvalds /* id 4: */ 7891da177e4SLinus Torvalds u64 features; 7901da177e4SLinus Torvalds } field; 7911da177e4SLinus Torvalds } cpuid; 7921da177e4SLinus Torvalds pal_vm_info_1_u_t vm1; 7931da177e4SLinus Torvalds pal_vm_info_2_u_t vm2; 7941da177e4SLinus Torvalds pal_status_t status; 7951da177e4SLinus Torvalds unsigned long impl_va_msb = 50, phys_addr_size = 44; /* Itanium defaults */ 7961da177e4SLinus Torvalds int i; 7971da177e4SLinus Torvalds for (i = 0; i < 5; ++i) 7981da177e4SLinus Torvalds cpuid.bits[i] = ia64_get_cpuid(i); 7991da177e4SLinus Torvalds 8001da177e4SLinus Torvalds memcpy(c->vendor, cpuid.field.vendor, 16); 8011da177e4SLinus Torvalds #ifdef CONFIG_SMP 8021da177e4SLinus Torvalds c->cpu = smp_processor_id(); 803e927ecb0SSuresh Siddha 804e927ecb0SSuresh Siddha /* below default values will be overwritten by identify_siblings() 80572fdbdceSSimon Arlott * for Multi-Threading/Multi-Core capable CPUs 806e927ecb0SSuresh Siddha */ 807e927ecb0SSuresh Siddha c->threads_per_core = c->cores_per_socket = c->num_log = 1; 808e927ecb0SSuresh Siddha c->socket_id = -1; 809e927ecb0SSuresh Siddha 810e927ecb0SSuresh Siddha identify_siblings(c); 811113134fcSAlex Chiang 812113134fcSAlex Chiang if (c->threads_per_core > smp_num_siblings) 813113134fcSAlex Chiang smp_num_siblings = c->threads_per_core; 8141da177e4SLinus Torvalds #endif 8151da177e4SLinus Torvalds c->ppn = cpuid.field.ppn; 8161da177e4SLinus Torvalds c->number = cpuid.field.number; 8171da177e4SLinus Torvalds c->revision = cpuid.field.revision; 8181da177e4SLinus Torvalds c->model = cpuid.field.model; 8191da177e4SLinus Torvalds c->family = cpuid.field.family; 8201da177e4SLinus Torvalds c->archrev = cpuid.field.archrev; 8211da177e4SLinus Torvalds c->features = cpuid.field.features; 82276d08bb3STony Luck c->model_name = get_model_name(c->family, c->model); 8231da177e4SLinus Torvalds 8241da177e4SLinus Torvalds status = ia64_pal_vm_summary(&vm1, &vm2); 8251da177e4SLinus Torvalds if (status == PAL_STATUS_SUCCESS) { 8261da177e4SLinus Torvalds impl_va_msb = vm2.pal_vm_info_2_s.impl_va_msb; 8271da177e4SLinus Torvalds phys_addr_size = vm1.pal_vm_info_1_s.phys_add_size; 8281da177e4SLinus Torvalds } 8291da177e4SLinus Torvalds c->unimpl_va_mask = ~((7L<<61) | ((1L << (impl_va_msb + 1)) - 1)); 8301da177e4SLinus Torvalds c->unimpl_pa_mask = ~((1L<<63) | ((1L << phys_addr_size) - 1)); 8311da177e4SLinus Torvalds } 8321da177e4SLinus Torvalds 833872fb6ddSFenghua Yu /* 83462fdd767SFenghua Yu * Do the following calculations: 83508357f82SZoltan Menyhart * 83662fdd767SFenghua Yu * 1. the max. cache line size. 83762fdd767SFenghua Yu * 2. the minimum of the i-cache stride sizes for "flush_icache_range()". 83862fdd767SFenghua Yu * 3. the minimum of the cache stride sizes for "clflush_cache_range()". 83908357f82SZoltan Menyhart */ 840ccce9bb8SPaul Gortmaker static void 84162fdd767SFenghua Yu get_cache_info(void) 8421da177e4SLinus Torvalds { 8431da177e4SLinus Torvalds unsigned long line_size, max = 1; 844e088a4adSMatthew Wilcox unsigned long l, levels, unique_caches; 8451da177e4SLinus Torvalds pal_cache_config_info_t cci; 846e088a4adSMatthew Wilcox long status; 8471da177e4SLinus Torvalds 8481da177e4SLinus Torvalds status = ia64_pal_cache_summary(&levels, &unique_caches); 8491da177e4SLinus Torvalds if (status != 0) { 8501da177e4SLinus Torvalds printk(KERN_ERR "%s: ia64_pal_cache_summary() failed (status=%ld)\n", 851d4ed8084SHarvey Harrison __func__, status); 8521da177e4SLinus Torvalds max = SMP_CACHE_BYTES; 85308357f82SZoltan Menyhart /* Safest setup for "flush_icache_range()" */ 85408357f82SZoltan Menyhart ia64_i_cache_stride_shift = I_CACHE_STRIDE_SHIFT; 85562fdd767SFenghua Yu /* Safest setup for "clflush_cache_range()" */ 85662fdd767SFenghua Yu ia64_cache_stride_shift = CACHE_STRIDE_SHIFT; 8571da177e4SLinus Torvalds goto out; 8581da177e4SLinus Torvalds } 8591da177e4SLinus Torvalds 8601da177e4SLinus Torvalds for (l = 0; l < levels; ++l) { 86162fdd767SFenghua Yu /* cache_type (data_or_unified)=2 */ 86262fdd767SFenghua Yu status = ia64_pal_cache_config_info(l, 2, &cci); 8631da177e4SLinus Torvalds if (status != 0) { 864e088a4adSMatthew Wilcox printk(KERN_ERR "%s: ia64_pal_cache_config_info" 865e088a4adSMatthew Wilcox "(l=%lu, 2) failed (status=%ld)\n", 866d4ed8084SHarvey Harrison __func__, l, status); 8671da177e4SLinus Torvalds max = SMP_CACHE_BYTES; 86808357f82SZoltan Menyhart /* The safest setup for "flush_icache_range()" */ 86908357f82SZoltan Menyhart cci.pcci_stride = I_CACHE_STRIDE_SHIFT; 87062fdd767SFenghua Yu /* The safest setup for "clflush_cache_range()" */ 87162fdd767SFenghua Yu ia64_cache_stride_shift = CACHE_STRIDE_SHIFT; 87208357f82SZoltan Menyhart cci.pcci_unified = 1; 87362fdd767SFenghua Yu } else { 87462fdd767SFenghua Yu if (cci.pcci_stride < ia64_cache_stride_shift) 87562fdd767SFenghua Yu ia64_cache_stride_shift = cci.pcci_stride; 87662fdd767SFenghua Yu 8771da177e4SLinus Torvalds line_size = 1 << cci.pcci_line_size; 8781da177e4SLinus Torvalds if (line_size > max) 8791da177e4SLinus Torvalds max = line_size; 88062fdd767SFenghua Yu } 88162fdd767SFenghua Yu 88208357f82SZoltan Menyhart if (!cci.pcci_unified) { 88362fdd767SFenghua Yu /* cache_type (instruction)=1*/ 88462fdd767SFenghua Yu status = ia64_pal_cache_config_info(l, 1, &cci); 88508357f82SZoltan Menyhart if (status != 0) { 886e088a4adSMatthew Wilcox printk(KERN_ERR "%s: ia64_pal_cache_config_info" 887e088a4adSMatthew Wilcox "(l=%lu, 1) failed (status=%ld)\n", 888d4ed8084SHarvey Harrison __func__, l, status); 889e088a4adSMatthew Wilcox /* The safest setup for flush_icache_range() */ 89008357f82SZoltan Menyhart cci.pcci_stride = I_CACHE_STRIDE_SHIFT; 89108357f82SZoltan Menyhart } 89208357f82SZoltan Menyhart } 89308357f82SZoltan Menyhart if (cci.pcci_stride < ia64_i_cache_stride_shift) 89408357f82SZoltan Menyhart ia64_i_cache_stride_shift = cci.pcci_stride; 8951da177e4SLinus Torvalds } 8961da177e4SLinus Torvalds out: 8971da177e4SLinus Torvalds if (max > ia64_max_cacheline_size) 8981da177e4SLinus Torvalds ia64_max_cacheline_size = max; 8991da177e4SLinus Torvalds } 9001da177e4SLinus Torvalds 9011da177e4SLinus Torvalds /* 9021da177e4SLinus Torvalds * cpu_init() initializes state that is per-CPU. This function acts 9031da177e4SLinus Torvalds * as a 'CPU state barrier', nothing should get across. 9041da177e4SLinus Torvalds */ 905ccce9bb8SPaul Gortmaker void 9061da177e4SLinus Torvalds cpu_init (void) 9071da177e4SLinus Torvalds { 908ccce9bb8SPaul Gortmaker extern void ia64_mmu_init(void *); 909a0776ec8SChen, Kenneth W static unsigned long max_num_phys_stacked = IA64_NUM_PHYS_STACK_REG; 9101da177e4SLinus Torvalds unsigned long num_phys_stacked; 9111da177e4SLinus Torvalds pal_vm_info_2_u_t vmi; 9121da177e4SLinus Torvalds unsigned int max_ctx; 9131da177e4SLinus Torvalds struct cpuinfo_ia64 *cpu_info; 9141da177e4SLinus Torvalds void *cpu_data; 9151da177e4SLinus Torvalds 9161da177e4SLinus Torvalds cpu_data = per_cpu_init(); 9174d1efed5STony Luck #ifdef CONFIG_SMP 918d5a7430dSMike Travis /* 919d5a7430dSMike Travis * insert boot cpu into sibling and core mapes 920d5a7430dSMike Travis * (must be done after per_cpu area is setup) 921d5a7430dSMike Travis */ 922d5a7430dSMike Travis if (smp_processor_id() == 0) { 9235d2068daSRusty Russell cpumask_set_cpu(0, &per_cpu(cpu_sibling_map, 0)); 9245d2068daSRusty Russell cpumask_set_cpu(0, &cpu_core_map[0]); 92510617bbeSTony Luck } else { 9261da177e4SLinus Torvalds /* 92710617bbeSTony Luck * Set ar.k3 so that assembly code in MCA handler can compute 9281da177e4SLinus Torvalds * physical addresses of per cpu variables with a simple: 9291da177e4SLinus Torvalds * phys = ar.k3 + &per_cpu_var 93010617bbeSTony Luck * and the alt-dtlb-miss handler can set per-cpu mapping into 93110617bbeSTony Luck * the TLB when needed. head.S already did this for cpu0. 9321da177e4SLinus Torvalds */ 9331da177e4SLinus Torvalds ia64_set_kr(IA64_KR_PER_CPU_DATA, 9341da177e4SLinus Torvalds ia64_tpa(cpu_data) - (long) __per_cpu_start); 93510617bbeSTony Luck } 93610617bbeSTony Luck #endif 9371da177e4SLinus Torvalds 93862fdd767SFenghua Yu get_cache_info(); 9391da177e4SLinus Torvalds 9401da177e4SLinus Torvalds /* 9411da177e4SLinus Torvalds * We can't pass "local_cpu_data" to identify_cpu() because we haven't called 9421da177e4SLinus Torvalds * ia64_mmu_init() yet. And we can't call ia64_mmu_init() first because it 9431da177e4SLinus Torvalds * depends on the data returned by identify_cpu(). We break the dependency by 9441da177e4SLinus Torvalds * accessing cpu_data() through the canonical per-CPU address. 9451da177e4SLinus Torvalds */ 946877105ccSTejun Heo cpu_info = cpu_data + ((char *) &__ia64_per_cpu_var(ia64_cpu_info) - __per_cpu_start); 9471da177e4SLinus Torvalds identify_cpu(cpu_info); 9481da177e4SLinus Torvalds 9491da177e4SLinus Torvalds #ifdef CONFIG_MCKINLEY 9501da177e4SLinus Torvalds { 9511da177e4SLinus Torvalds # define FEATURE_SET 16 9521da177e4SLinus Torvalds struct ia64_pal_retval iprv; 9531da177e4SLinus Torvalds 9541da177e4SLinus Torvalds if (cpu_info->family == 0x1f) { 9551da177e4SLinus Torvalds PAL_CALL_PHYS(iprv, PAL_PROC_GET_FEATURES, 0, FEATURE_SET, 0); 9561da177e4SLinus Torvalds if ((iprv.status == 0) && (iprv.v0 & 0x80) && (iprv.v2 & 0x80)) 9571da177e4SLinus Torvalds PAL_CALL_PHYS(iprv, PAL_PROC_SET_FEATURES, 9581da177e4SLinus Torvalds (iprv.v1 | 0x80), FEATURE_SET, 0); 9591da177e4SLinus Torvalds } 9601da177e4SLinus Torvalds } 9611da177e4SLinus Torvalds #endif 9621da177e4SLinus Torvalds 9631da177e4SLinus Torvalds /* Clear the stack memory reserved for pt_regs: */ 9646450578fSAl Viro memset(task_pt_regs(current), 0, sizeof(struct pt_regs)); 9651da177e4SLinus Torvalds 9661da177e4SLinus Torvalds ia64_set_kr(IA64_KR_FPU_OWNER, 0); 9671da177e4SLinus Torvalds 9681da177e4SLinus Torvalds /* 9691da177e4SLinus Torvalds * Initialize the page-table base register to a global 9701da177e4SLinus Torvalds * directory with all zeroes. This ensure that we can handle 9711da177e4SLinus Torvalds * TLB-misses to user address-space even before we created the 9721da177e4SLinus Torvalds * first user address-space. This may happen, e.g., due to 9731da177e4SLinus Torvalds * aggressive use of lfetch.fault. 9741da177e4SLinus Torvalds */ 9751da177e4SLinus Torvalds ia64_set_kr(IA64_KR_PT_BASE, __pa(ia64_imva(empty_zero_page))); 9761da177e4SLinus Torvalds 9771da177e4SLinus Torvalds /* 97886ebacd3STony Luck * Initialize default control register to defer speculative faults except 97986ebacd3STony Luck * for those arising from TLB misses, which are not deferred. The 9801da177e4SLinus Torvalds * kernel MUST NOT depend on a particular setting of these bits (in other words, 9811da177e4SLinus Torvalds * the kernel must have recovery code for all speculative accesses). Turn on 9821da177e4SLinus Torvalds * dcr.lc as per recommendation by the architecture team. Most IA-32 apps 9831da177e4SLinus Torvalds * shouldn't be affected by this (moral: keep your ia32 locks aligned and you'll 9841da177e4SLinus Torvalds * be fine). 9851da177e4SLinus Torvalds */ 9861da177e4SLinus Torvalds ia64_setreg(_IA64_REG_CR_DCR, ( IA64_DCR_DP | IA64_DCR_DK | IA64_DCR_DX | IA64_DCR_DR 9871da177e4SLinus Torvalds | IA64_DCR_DA | IA64_DCR_DD | IA64_DCR_LC)); 988f1f10076SVegard Nossum mmgrab(&init_mm); 9891da177e4SLinus Torvalds current->active_mm = &init_mm; 99080a03e29SStoyan Gaydarov BUG_ON(current->mm); 9911da177e4SLinus Torvalds 9921da177e4SLinus Torvalds ia64_mmu_init(ia64_imva(cpu_data)); 9931da177e4SLinus Torvalds ia64_mca_cpu_init(ia64_imva(cpu_data)); 9941da177e4SLinus Torvalds 99572fdbdceSSimon Arlott /* Clear ITC to eliminate sched_clock() overflows in human time. */ 9961da177e4SLinus Torvalds ia64_set_itc(0); 9971da177e4SLinus Torvalds 9981da177e4SLinus Torvalds /* disable all local interrupt sources: */ 9991da177e4SLinus Torvalds ia64_set_itv(1 << 16); 10001da177e4SLinus Torvalds ia64_set_lrr0(1 << 16); 10011da177e4SLinus Torvalds ia64_set_lrr1(1 << 16); 10021da177e4SLinus Torvalds ia64_setreg(_IA64_REG_CR_PMV, 1 << 16); 10031da177e4SLinus Torvalds ia64_setreg(_IA64_REG_CR_CMCV, 1 << 16); 10041da177e4SLinus Torvalds 10051da177e4SLinus Torvalds /* clear TPR & XTP to enable all interrupt classes: */ 10061da177e4SLinus Torvalds ia64_setreg(_IA64_REG_CR_TPR, 0); 1007f740e6c9SKenji Kaneshige 1008f740e6c9SKenji Kaneshige /* Clear any pending interrupts left by SAL/EFI */ 1009f740e6c9SKenji Kaneshige while (ia64_get_ivr() != IA64_SPURIOUS_INT_VECTOR) 1010f740e6c9SKenji Kaneshige ia64_eoi(); 1011f740e6c9SKenji Kaneshige 10121da177e4SLinus Torvalds #ifdef CONFIG_SMP 10131da177e4SLinus Torvalds normal_xtp(); 10141da177e4SLinus Torvalds #endif 10151da177e4SLinus Torvalds 10161da177e4SLinus Torvalds /* set ia64_ctx.max_rid to the maximum RID that is supported by all CPUs: */ 10172046b94eSFenghua Yu if (ia64_pal_vm_summary(NULL, &vmi) == 0) { 10181da177e4SLinus Torvalds max_ctx = (1U << (vmi.pal_vm_info_2_s.rid_size - 3)) - 1; 1019a6c75b86SFenghua Yu setup_ptcg_sem(vmi.pal_vm_info_2_s.max_purges, NPTCG_FROM_PAL); 10202046b94eSFenghua Yu } else { 10211da177e4SLinus Torvalds printk(KERN_WARNING "cpu_init: PAL VM summary failed, assuming 18 RID bits\n"); 10221da177e4SLinus Torvalds max_ctx = (1U << 15) - 1; /* use architected minimum */ 10231da177e4SLinus Torvalds } 10241da177e4SLinus Torvalds while (max_ctx < ia64_ctx.max_ctx) { 10251da177e4SLinus Torvalds unsigned int old = ia64_ctx.max_ctx; 10261da177e4SLinus Torvalds if (cmpxchg(&ia64_ctx.max_ctx, old, max_ctx) == old) 10271da177e4SLinus Torvalds break; 10281da177e4SLinus Torvalds } 10291da177e4SLinus Torvalds 10301da177e4SLinus Torvalds if (ia64_pal_rse_info(&num_phys_stacked, NULL) != 0) { 10311da177e4SLinus Torvalds printk(KERN_WARNING "cpu_init: PAL RSE info failed; assuming 96 physical " 10321da177e4SLinus Torvalds "stacked regs\n"); 10331da177e4SLinus Torvalds num_phys_stacked = 96; 10341da177e4SLinus Torvalds } 10351da177e4SLinus Torvalds /* size of physical stacked register partition plus 8 bytes: */ 1036a0776ec8SChen, Kenneth W if (num_phys_stacked > max_num_phys_stacked) { 1037a0776ec8SChen, Kenneth W ia64_patch_phys_stack_reg(num_phys_stacked*8 + 8); 1038a0776ec8SChen, Kenneth W max_num_phys_stacked = num_phys_stacked; 1039a0776ec8SChen, Kenneth W } 10401da177e4SLinus Torvalds } 10411da177e4SLinus Torvalds 1042244fd545SChen, Kenneth W void __init 10431da177e4SLinus Torvalds check_bugs (void) 10441da177e4SLinus Torvalds { 10451da177e4SLinus Torvalds ia64_patch_mckinley_e9((unsigned long) __start___mckinley_e9_bundles, 10461da177e4SLinus Torvalds (unsigned long) __end___mckinley_e9_bundles); 10471da177e4SLinus Torvalds } 10483ed3bce8SMatt Domsch 10493ed3bce8SMatt Domsch static int __init run_dmi_scan(void) 10503ed3bce8SMatt Domsch { 10510fca0812SRobert Richter dmi_setup(); 10523ed3bce8SMatt Domsch return 0; 10533ed3bce8SMatt Domsch } 10543ed3bce8SMatt Domsch core_initcall(run_dmi_scan); 1055