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setup.c

/*
 *  linux/arch/alpha/kernel/setup.c
 *
 *  Copyright (C) 1995  Linus Torvalds
 */

/* 2.3.x bootmem, 1999 Andrea Arcangeli <andrea@suse.de> */

/*
 * Bootup setup stuff.
 */

#include <linux/sched.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/stddef.h>
#include <linux/unistd.h>
#include <linux/ptrace.h>
#include <linux/slab.h>
#include <linux/user.h>
#include <linux/screen_info.h>
#include <linux/delay.h>
#include <linux/mc146818rtc.h>
#include <linux/console.h>
#include <linux/cpu.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/string.h>
#include <linux/ioport.h>
#include <linux/platform_device.h>
#include <linux/bootmem.h>
#include <linux/pci.h>
#include <linux/seq_file.h>
#include <linux/root_dev.h>
#include <linux/initrd.h>
#include <linux/eisa.h>
#include <linux/pfn.h>
#ifdef CONFIG_MAGIC_SYSRQ
#include <linux/sysrq.h>
#include <linux/reboot.h>
#endif
#include <linux/notifier.h>
#include <asm/setup.h>
#include <asm/io.h>
#include <linux/log2.h>

extern struct atomic_notifier_head panic_notifier_list;
static int alpha_panic_event(struct notifier_block *, unsigned long, void *);
static struct notifier_block alpha_panic_block = {
      alpha_panic_event,
        NULL,
        INT_MAX /* try to do it first */
};

#include <asm/uaccess.h>
#include <asm/pgtable.h>
#include <asm/system.h>
#include <asm/hwrpb.h>
#include <asm/dma.h>
#include <asm/mmu_context.h>
#include <asm/console.h>

#include "proto.h"
#include "pci_impl.h"


struct hwrpb_struct *hwrpb;
EXPORT_SYMBOL(hwrpb);
unsigned long srm_hae;

int alpha_l1i_cacheshape;
int alpha_l1d_cacheshape;
int alpha_l2_cacheshape;
int alpha_l3_cacheshape;

#ifdef CONFIG_VERBOSE_MCHECK
/* 0=minimum, 1=verbose, 2=all */
/* These can be overridden via the command line, ie "verbose_mcheck=2") */
unsigned long alpha_verbose_mcheck = CONFIG_VERBOSE_MCHECK_ON;
#endif

/* Which processor we booted from.  */
int boot_cpuid;

/*
 * Using SRM callbacks for initial console output. This works from
 * setup_arch() time through the end of time_init(), as those places
 * are under our (Alpha) control.

 * "srmcons" specified in the boot command arguments allows us to
 * see kernel messages during the period of time before the true
 * console device is "registered" during console_init(). 
 * As of this version (2.5.59), console_init() will call
 * disable_early_printk() as the last action before initializing
 * the console drivers. That's the last possible time srmcons can be 
 * unregistered without interfering with console behavior.
 *
 * By default, OFF; set it with a bootcommand arg of "srmcons" or 
 * "console=srm". The meaning of these two args is:
 *     "srmcons"     - early callback prints 
 *     "console=srm" - full callback based console, including early prints
 */
int srmcons_output = 0;

/* Enforce a memory size limit; useful for testing. By default, none. */
unsigned long mem_size_limit = 0;

/* Set AGP GART window size (0 means disabled). */
unsigned long alpha_agpgart_size = DEFAULT_AGP_APER_SIZE;

#ifdef CONFIG_ALPHA_GENERIC
struct alpha_machine_vector alpha_mv;
int alpha_using_srm;
EXPORT_SYMBOL(alpha_using_srm);
#endif

static struct alpha_machine_vector *get_sysvec(unsigned long, unsigned long,
                                     unsigned long);
static struct alpha_machine_vector *get_sysvec_byname(const char *);
static void get_sysnames(unsigned long, unsigned long, unsigned long,
                   char **, char **);
static void determine_cpu_caches (unsigned int);

static char __initdata command_line[COMMAND_LINE_SIZE];

/*
 * The format of "screen_info" is strange, and due to early
 * i386-setup code. This is just enough to make the console
 * code think we're on a VGA color display.
 */

struct screen_info screen_info = {
      .orig_x = 0,
      .orig_y = 25,
      .orig_video_cols = 80,
      .orig_video_lines = 25,
      .orig_video_isVGA = 1,
      .orig_video_points = 16
};

EXPORT_SYMBOL(screen_info);

/*
 * The direct map I/O window, if any.  This should be the same
 * for all busses, since it's used by virt_to_bus.
 */

unsigned long __direct_map_base;
unsigned long __direct_map_size;
EXPORT_SYMBOL(__direct_map_base);
EXPORT_SYMBOL(__direct_map_size);

/*
 * Declare all of the machine vectors.
 */

/* GCC 2.7.2 (on alpha at least) is lame.  It does not support either 
   __attribute__((weak)) or #pragma weak.  Bypass it and talk directly
   to the assembler.  */

#define WEAK(X) \
      extern struct alpha_machine_vector X; \
      asm(".weak "#X)

WEAK(alcor_mv);
WEAK(alphabook1_mv);
WEAK(avanti_mv);
WEAK(cabriolet_mv);
WEAK(clipper_mv);
WEAK(dp264_mv);
WEAK(eb164_mv);
WEAK(eb64p_mv);
WEAK(eb66_mv);
WEAK(eb66p_mv);
WEAK(eiger_mv);
WEAK(jensen_mv);
WEAK(lx164_mv);
WEAK(lynx_mv);
WEAK(marvel_ev7_mv);
WEAK(miata_mv);
WEAK(mikasa_mv);
WEAK(mikasa_primo_mv);
WEAK(monet_mv);
WEAK(nautilus_mv);
WEAK(noname_mv);
WEAK(noritake_mv);
WEAK(noritake_primo_mv);
WEAK(p2k_mv);
WEAK(pc164_mv);
WEAK(privateer_mv);
WEAK(rawhide_mv);
WEAK(ruffian_mv);
WEAK(rx164_mv);
WEAK(sable_mv);
WEAK(sable_gamma_mv);
WEAK(shark_mv);
WEAK(sx164_mv);
WEAK(takara_mv);
WEAK(titan_mv);
WEAK(webbrick_mv);
WEAK(wildfire_mv);
WEAK(xl_mv);
WEAK(xlt_mv);

#undef WEAK

/*
 * I/O resources inherited from PeeCees.  Except for perhaps the
 * turbochannel alphas, everyone has these on some sort of SuperIO chip.
 *
 * ??? If this becomes less standard, move the struct out into the
 * machine vector.
 */

static void __init
reserve_std_resources(void)
{
      static struct resource standard_io_resources[] = {
            { .name = "rtc", .start = -1, .end = -1 },
            { .name = "dma1", .start = 0x00, .end = 0x1f },
            { .name = "pic1", .start = 0x20, .end = 0x3f },
            { .name = "timer", .start = 0x40, .end = 0x5f },
            { .name = "keyboard", .start = 0x60, .end = 0x6f },
            { .name = "dma page reg", .start = 0x80, .end = 0x8f },
            { .name = "pic2", .start = 0xa0, .end = 0xbf },
            { .name = "dma2", .start = 0xc0, .end = 0xdf },
      };

      struct resource *io = &ioport_resource;
      size_t i;

      if (hose_head) {
            struct pci_controller *hose;
            for (hose = hose_head; hose; hose = hose->next)
                  if (hose->index == 0) {
                        io = hose->io_space;
                        break;
                  }
      }

      /* Fix up for the Jensen's queer RTC placement.  */
      standard_io_resources[0].start = RTC_PORT(0);
      standard_io_resources[0].end = RTC_PORT(0) + 0x10;

      for (i = 0; i < ARRAY_SIZE(standard_io_resources); ++i)
            request_resource(io, standard_io_resources+i);
}

#define PFN_MAX         PFN_DOWN(0x80000000)
#define for_each_mem_cluster(memdesc, cluster, i)           \
      for ((cluster) = (memdesc)->cluster, (i) = 0;         \
           (i) < (memdesc)->numclusters; (i)++, (cluster)++)

static unsigned long __init
get_mem_size_limit(char *s)
{
        unsigned long end = 0;
        char *from = s;

        end = simple_strtoul(from, &from, 0);
        if ( *from == 'K' || *from == 'k' ) {
                end = end << 10;
                from++;
        } else if ( *from == 'M' || *from == 'm' ) {
                end = end << 20;
                from++;
        } else if ( *from == 'G' || *from == 'g' ) {
                end = end << 30;
                from++;
        }
        return end >> PAGE_SHIFT; /* Return the PFN of the limit. */
}

#ifdef CONFIG_BLK_DEV_INITRD
void * __init
move_initrd(unsigned long mem_limit)
{
      void *start;
      unsigned long size;

      size = initrd_end - initrd_start;
      start = __alloc_bootmem(PAGE_ALIGN(size), PAGE_SIZE, 0);
      if (!start || __pa(start) + size > mem_limit) {
            initrd_start = initrd_end = 0;
            return NULL;
      }
      memmove(start, (void *)initrd_start, size);
      initrd_start = (unsigned long)start;
      initrd_end = initrd_start + size;
      printk("initrd moved to %p\n", start);
      return start;
}
#endif

#ifndef CONFIG_DISCONTIGMEM
static void __init
setup_memory(void *kernel_end)
{
      struct memclust_struct * cluster;
      struct memdesc_struct * memdesc;
      unsigned long start_kernel_pfn, end_kernel_pfn;
      unsigned long bootmap_size, bootmap_pages, bootmap_start;
      unsigned long start, end;
      unsigned long i;

      /* Find free clusters, and init and free the bootmem accordingly.  */
      memdesc = (struct memdesc_struct *)
        (hwrpb->mddt_offset + (unsigned long) hwrpb);

      for_each_mem_cluster(memdesc, cluster, i) {
            printk("memcluster %lu, usage %01lx, start %8lu, end %8lu\n",
                   i, cluster->usage, cluster->start_pfn,
                   cluster->start_pfn + cluster->numpages);

            /* Bit 0 is console/PALcode reserved.  Bit 1 is
               non-volatile memory -- we might want to mark
               this for later.  */
            if (cluster->usage & 3)
                  continue;

            end = cluster->start_pfn + cluster->numpages;
            if (end > max_low_pfn)
                  max_low_pfn = end;
      }

      /*
       * Except for the NUMA systems (wildfire, marvel) all of the 
       * Alpha systems we run on support 32GB of memory or less.
       * Since the NUMA systems introduce large holes in memory addressing,
       * we can get into a situation where there is not enough contiguous
       * memory for the memory map. 
       *
       * Limit memory to the first 32GB to limit the NUMA systems to 
       * memory on their first node (wildfire) or 2 (marvel) to avoid 
       * not being able to produce the memory map. In order to access 
       * all of the memory on the NUMA systems, build with discontiguous
       * memory support.
       *
       * If the user specified a memory limit, let that memory limit stand.
       */
      if (!mem_size_limit) 
            mem_size_limit = (32ul * 1024 * 1024 * 1024) >> PAGE_SHIFT;

      if (mem_size_limit && max_low_pfn >= mem_size_limit)
      {
            printk("setup: forcing memory size to %ldK (from %ldK).\n",
                   mem_size_limit << (PAGE_SHIFT - 10),
                   max_low_pfn    << (PAGE_SHIFT - 10));
            max_low_pfn = mem_size_limit;
      }

      /* Find the bounds of kernel memory.  */
      start_kernel_pfn = PFN_DOWN(KERNEL_START_PHYS);
      end_kernel_pfn = PFN_UP(virt_to_phys(kernel_end));
      bootmap_start = -1;

 try_again:
      if (max_low_pfn <= end_kernel_pfn)
            panic("not enough memory to boot");

      /* We need to know how many physically contiguous pages
         we'll need for the bootmap.  */
      bootmap_pages = bootmem_bootmap_pages(max_low_pfn);

      /* Now find a good region where to allocate the bootmap.  */
      for_each_mem_cluster(memdesc, cluster, i) {
            if (cluster->usage & 3)
                  continue;

            start = cluster->start_pfn;
            end = start + cluster->numpages;
            if (start >= max_low_pfn)
                  continue;
            if (end > max_low_pfn)
                  end = max_low_pfn;
            if (start < start_kernel_pfn) {
                  if (end > end_kernel_pfn
                      && end - end_kernel_pfn >= bootmap_pages) {
                        bootmap_start = end_kernel_pfn;
                        break;
                  } else if (end > start_kernel_pfn)
                        end = start_kernel_pfn;
            } else if (start < end_kernel_pfn)
                  start = end_kernel_pfn;
            if (end - start >= bootmap_pages) {
                  bootmap_start = start;
                  break;
            }
      }

      if (bootmap_start == ~0UL) {
            max_low_pfn >>= 1;
            goto try_again;
      }

      /* Allocate the bootmap and mark the whole MM as reserved.  */
      bootmap_size = init_bootmem(bootmap_start, max_low_pfn);

      /* Mark the free regions.  */
      for_each_mem_cluster(memdesc, cluster, i) {
            if (cluster->usage & 3)
                  continue;

            start = cluster->start_pfn;
            end = cluster->start_pfn + cluster->numpages;
            if (start >= max_low_pfn)
                  continue;
            if (end > max_low_pfn)
                  end = max_low_pfn;
            if (start < start_kernel_pfn) {
                  if (end > end_kernel_pfn) {
                        free_bootmem(PFN_PHYS(start),
                                   (PFN_PHYS(start_kernel_pfn)
                                    - PFN_PHYS(start)));
                        printk("freeing pages %ld:%ld\n",
                               start, start_kernel_pfn);
                        start = end_kernel_pfn;
                  } else if (end > start_kernel_pfn)
                        end = start_kernel_pfn;
            } else if (start < end_kernel_pfn)
                  start = end_kernel_pfn;
            if (start >= end)
                  continue;

            free_bootmem(PFN_PHYS(start), PFN_PHYS(end) - PFN_PHYS(start));
            printk("freeing pages %ld:%ld\n", start, end);
      }

      /* Reserve the bootmap memory.  */
      reserve_bootmem(PFN_PHYS(bootmap_start), bootmap_size,
                  BOOTMEM_DEFAULT);
      printk("reserving pages %ld:%ld\n", bootmap_start, bootmap_start+PFN_UP(bootmap_size));

#ifdef CONFIG_BLK_DEV_INITRD
      initrd_start = INITRD_START;
      if (initrd_start) {
            initrd_end = initrd_start+INITRD_SIZE;
            printk("Initial ramdisk at: 0x%p (%lu bytes)\n",
                   (void *) initrd_start, INITRD_SIZE);

            if ((void *)initrd_end > phys_to_virt(PFN_PHYS(max_low_pfn))) {
                  if (!move_initrd(PFN_PHYS(max_low_pfn)))
                        printk("initrd extends beyond end of memory "
                               "(0x%08lx > 0x%p)\ndisabling initrd\n",
                               initrd_end,
                               phys_to_virt(PFN_PHYS(max_low_pfn)));
            } else {
                  reserve_bootmem(virt_to_phys((void *)initrd_start),
                              INITRD_SIZE, BOOTMEM_DEFAULT);
            }
      }
#endif /* CONFIG_BLK_DEV_INITRD */
}
#else
extern void setup_memory(void *);
#endif /* !CONFIG_DISCONTIGMEM */

int __init
page_is_ram(unsigned long pfn)
{
      struct memclust_struct * cluster;
      struct memdesc_struct * memdesc;
      unsigned long i;

      memdesc = (struct memdesc_struct *)
            (hwrpb->mddt_offset + (unsigned long) hwrpb);
      for_each_mem_cluster(memdesc, cluster, i)
      {
            if (pfn >= cluster->start_pfn  &&
                pfn < cluster->start_pfn + cluster->numpages) {
                  return (cluster->usage & 3) ? 0 : 1;
            }
      }

      return 0;
}

static int __init
register_cpus(void)
{
      int i;

      for_each_possible_cpu(i) {
            struct cpu *p = kzalloc(sizeof(*p), GFP_KERNEL);
            if (!p)
                  return -ENOMEM;
            register_cpu(p, i);
      }
      return 0;
}

arch_initcall(register_cpus);

void __init
setup_arch(char **cmdline_p)
{
      extern char _end[];

      struct alpha_machine_vector *vec = NULL;
      struct percpu_struct *cpu;
      char *type_name, *var_name, *p;
      void *kernel_end = _end; /* end of kernel */
      char *args = command_line;

      hwrpb = (struct hwrpb_struct*) __va(INIT_HWRPB->phys_addr);
      boot_cpuid = hard_smp_processor_id();

        /*
       * Pre-process the system type to make sure it will be valid.
       *
       * This may restore real CABRIO and EB66+ family names, ie
       * EB64+ and EB66.
       *
       * Oh, and "white box" AS800 (aka DIGITAL Server 3000 series)
       * and AS1200 (DIGITAL Server 5000 series) have the type as
       * the negative of the real one.
       */
        if ((long)hwrpb->sys_type < 0) {
            hwrpb->sys_type = -((long)hwrpb->sys_type);
            hwrpb_update_checksum(hwrpb);
      }

      /* Register a call for panic conditions. */
      atomic_notifier_chain_register(&panic_notifier_list,
                  &alpha_panic_block);

#ifdef CONFIG_ALPHA_GENERIC
      /* Assume that we've booted from SRM if we haven't booted from MILO.
         Detect the later by looking for "MILO" in the system serial nr.  */
      alpha_using_srm = strncmp((const char *)hwrpb->ssn, "MILO", 4) != 0;
#endif

      /* If we are using SRM, we want to allow callbacks
         as early as possible, so do this NOW, and then
         they should work immediately thereafter.
      */
      kernel_end = callback_init(kernel_end);

      /* 
       * Locate the command line.
       */
      /* Hack for Jensen... since we're restricted to 8 or 16 chars for
         boot flags depending on the boot mode, we need some shorthand.
         This should do for installation.  */
      if (strcmp(COMMAND_LINE, "INSTALL") == 0) {
            strlcpy(command_line, "root=/dev/fd0 load_ramdisk=1", sizeof command_line);
      } else {
            strlcpy(command_line, COMMAND_LINE, sizeof command_line);
      }
      strcpy(boot_command_line, command_line);
      *cmdline_p = command_line;

      /* 
       * Process command-line arguments.
       */
      while ((p = strsep(&args, " \t")) != NULL) {
            if (!*p) continue;
            if (strncmp(p, "alpha_mv=", 9) == 0) {
                  vec = get_sysvec_byname(p+9);
                  continue;
            }
            if (strncmp(p, "cycle=", 6) == 0) {
                  est_cycle_freq = simple_strtol(p+6, NULL, 0);
                  continue;
            }
            if (strncmp(p, "mem=", 4) == 0) {
                  mem_size_limit = get_mem_size_limit(p+4);
                  continue;
            }
            if (strncmp(p, "srmcons", 7) == 0) {
                  srmcons_output |= 1;
                  continue;
            }
            if (strncmp(p, "console=srm", 11) == 0) {
                  srmcons_output |= 2;
                  continue;
            }
            if (strncmp(p, "gartsize=", 9) == 0) {
                  alpha_agpgart_size =
                        get_mem_size_limit(p+9) << PAGE_SHIFT;
                  continue;
            }
#ifdef CONFIG_VERBOSE_MCHECK
            if (strncmp(p, "verbose_mcheck=", 15) == 0) {
                  alpha_verbose_mcheck = simple_strtol(p+15, NULL, 0);
                  continue;
            }
#endif
      }

      /* Replace the command line, now that we've killed it with strsep.  */
      strcpy(command_line, boot_command_line);

      /* If we want SRM console printk echoing early, do it now. */
      if (alpha_using_srm && srmcons_output) {
            register_srm_console();

            /*
             * If "console=srm" was specified, clear the srmcons_output
             * flag now so that time.c won't unregister_srm_console
             */
            if (srmcons_output & 2)
                  srmcons_output = 0;
      }

#ifdef CONFIG_MAGIC_SYSRQ
      /* If we're using SRM, make sysrq-b halt back to the prom,
         not auto-reboot.  */
      if (alpha_using_srm) {
            struct sysrq_key_op *op = __sysrq_get_key_op('b');
            op->handler = (void *) machine_halt;
      }
#endif

      /*
       * Identify and reconfigure for the current system.
       */
      cpu = (struct percpu_struct*)((char*)hwrpb + hwrpb->processor_offset);

      get_sysnames(hwrpb->sys_type, hwrpb->sys_variation,
                 cpu->type, &type_name, &var_name);
      if (*var_name == '0')
            var_name = "";

      if (!vec) {
            vec = get_sysvec(hwrpb->sys_type, hwrpb->sys_variation,
                         cpu->type);
      }

      if (!vec) {
            panic("Unsupported system type: %s%s%s (%ld %ld)\n",
                  type_name, (*var_name ? " variation " : ""), var_name,
                  hwrpb->sys_type, hwrpb->sys_variation);
      }
      if (vec != &alpha_mv) {
            alpha_mv = *vec;
      }
      
      printk("Booting "
#ifdef CONFIG_ALPHA_GENERIC
             "GENERIC "
#endif
             "on %s%s%s using machine vector %s from %s\n",
             type_name, (*var_name ? " variation " : ""),
             var_name, alpha_mv.vector_name,
             (alpha_using_srm ? "SRM" : "MILO"));

      printk("Major Options: "
#ifdef CONFIG_SMP
             "SMP "
#endif
#ifdef CONFIG_ALPHA_EV56
             "EV56 "
#endif
#ifdef CONFIG_ALPHA_EV67
             "EV67 "
#endif
#ifdef CONFIG_ALPHA_LEGACY_START_ADDRESS
             "LEGACY_START "
#endif
#ifdef CONFIG_VERBOSE_MCHECK
             "VERBOSE_MCHECK "
#endif

#ifdef CONFIG_DISCONTIGMEM
             "DISCONTIGMEM "
#ifdef CONFIG_NUMA
             "NUMA "
#endif
#endif

#ifdef CONFIG_DEBUG_SPINLOCK
             "DEBUG_SPINLOCK "
#endif
#ifdef CONFIG_MAGIC_SYSRQ
             "MAGIC_SYSRQ "
#endif
             "\n");

      printk("Command line: %s\n", command_line);

      /* 
       * Sync up the HAE.
       * Save the SRM's current value for restoration.
       */
      srm_hae = *alpha_mv.hae_register;
      __set_hae(alpha_mv.hae_cache);

      /* Reset enable correctable error reports.  */
      wrmces(0x7);

      /* Find our memory.  */
      setup_memory(kernel_end);

      /* First guess at cpu cache sizes.  Do this before init_arch.  */
      determine_cpu_caches(cpu->type);

      /* Initialize the machine.  Usually has to do with setting up
         DMA windows and the like.  */
      if (alpha_mv.init_arch)
            alpha_mv.init_arch();

      /* Reserve standard resources.  */
      reserve_std_resources();

      /* 
       * Give us a default console.  TGA users will see nothing until
       * chr_dev_init is called, rather late in the boot sequence.
       */

#ifdef CONFIG_VT
#if defined(CONFIG_VGA_CONSOLE)
      conswitchp = &vga_con;
#elif defined(CONFIG_DUMMY_CONSOLE)
      conswitchp = &dummy_con;
#endif
#endif

      /* Default root filesystem to sda2.  */
      ROOT_DEV = Root_SDA2;

#ifdef CONFIG_EISA
      /* FIXME:  only set this when we actually have EISA in this box? */
      EISA_bus = 1;
#endif

      /*
       * Check ASN in HWRPB for validity, report if bad.
       * FIXME: how was this failing?  Should we trust it instead,
       * and copy the value into alpha_mv.max_asn?
       */

      if (hwrpb->max_asn != MAX_ASN) {
            printk("Max ASN from HWRPB is bad (0x%lx)\n", hwrpb->max_asn);
      }

      /*
       * Identify the flock of penguins.
       */

#ifdef CONFIG_SMP
      setup_smp();
#endif
      paging_init();
}

static char sys_unknown[] = "Unknown";
static char systype_names[][16] = {
      "0",
      "ADU", "Cobra", "Ruby", "Flamingo", "Mannequin", "Jensen",
      "Pelican", "Morgan", "Sable", "Medulla", "Noname",
      "Turbolaser", "Avanti", "Mustang", "Alcor", "Tradewind",
      "Mikasa", "EB64", "EB66", "EB64+", "AlphaBook1",
      "Rawhide", "K2", "Lynx", "XL", "EB164", "Noritake",
      "Cortex", "29", "Miata", "XXM", "Takara", "Yukon",
      "Tsunami", "Wildfire", "CUSCO", "Eiger", "Titan", "Marvel"
};

static char unofficial_names[][8] = {"100", "Ruffian"};

static char api_names[][16] = {"200", "Nautilus"};

static char eb164_names[][8] = {"EB164", "PC164", "LX164", "SX164", "RX164"};
static int eb164_indices[] = {0,0,0,1,1,1,1,1,2,2,2,2,3,3,3,3,4};

static char alcor_names[][16] = {"Alcor", "Maverick", "Bret"};
static int alcor_indices[] = {0,0,0,1,1,1,0,0,0,0,0,0,2,2,2,2,2,2};

static char eb64p_names[][16] = {"EB64+", "Cabriolet", "AlphaPCI64"};
static int eb64p_indices[] = {0,0,1,2};

static char eb66_names[][8] = {"EB66", "EB66+"};
static int eb66_indices[] = {0,0,1};

static char marvel_names[][16] = {
      "Marvel/EV7"
};
static int marvel_indices[] = { 0 };

static char rawhide_names[][16] = {
      "Dodge", "Wrangler", "Durango", "Tincup", "DaVinci"
};
static int rawhide_indices[] = {0,0,0,1,1,2,2,3,3,4,4};

static char titan_names[][16] = {
      "DEFAULT", "Privateer", "Falcon", "Granite"
};
static int titan_indices[] = {0,1,2,2,3};

static char tsunami_names[][16] = {
      "0", "DP264", "Warhol", "Windjammer", "Monet", "Clipper",
      "Goldrush", "Webbrick", "Catamaran", "Brisbane", "Melbourne",
      "Flying Clipper", "Shark"
};
static int tsunami_indices[] = {0,1,2,3,4,5,6,7,8,9,10,11,12};

static struct alpha_machine_vector * __init
get_sysvec(unsigned long type, unsigned long variation, unsigned long cpu)
{
      static struct alpha_machine_vector *systype_vecs[] __initdata =
      {
            NULL,       /* 0 */
            NULL,       /* ADU */
            NULL,       /* Cobra */
            NULL,       /* Ruby */
            NULL,       /* Flamingo */
            NULL,       /* Mannequin */
            &jensen_mv,
            NULL,             /* Pelican */
            NULL,       /* Morgan */
            NULL,       /* Sable -- see below.  */
            NULL,       /* Medulla */
            &noname_mv,
            NULL,       /* Turbolaser */
            &avanti_mv,
            NULL,       /* Mustang */
            NULL,       /* Alcor, Bret, Maverick. HWRPB inaccurate? */
            NULL,       /* Tradewind */
            NULL,       /* Mikasa -- see below.  */
            NULL,       /* EB64 */
            NULL,       /* EB66 -- see variation.  */
            NULL,       /* EB64+ -- see variation.  */
            &alphabook1_mv,
            &rawhide_mv,
            NULL,       /* K2 */
            &lynx_mv,   /* Lynx */
            &xl_mv,
            NULL,       /* EB164 -- see variation.  */
            NULL,       /* Noritake -- see below.  */
            NULL,       /* Cortex */
            NULL,       /* 29 */
            &miata_mv,
            NULL,       /* XXM */
            &takara_mv,
            NULL,       /* Yukon */
            NULL,       /* Tsunami -- see variation.  */
            &wildfire_mv,     /* Wildfire */
            NULL,       /* CUSCO */
            &eiger_mv,  /* Eiger */
            NULL,       /* Titan */
            NULL,       /* Marvel */
      };

      static struct alpha_machine_vector *unofficial_vecs[] __initdata =
      {
            NULL,       /* 100 */
            &ruffian_mv,
      };

      static struct alpha_machine_vector *api_vecs[] __initdata =
      {
            NULL,       /* 200 */
            &nautilus_mv,
      };

      static struct alpha_machine_vector *alcor_vecs[] __initdata = 
      {
            &alcor_mv, &xlt_mv, &xlt_mv
      };

      static struct alpha_machine_vector *eb164_vecs[] __initdata =
      {
            &eb164_mv, &pc164_mv, &lx164_mv, &sx164_mv, &rx164_mv
      };

      static struct alpha_machine_vector *eb64p_vecs[] __initdata =
      {
            &eb64p_mv,
            &cabriolet_mv,
            &cabriolet_mv           /* AlphaPCI64 */
      };

      static struct alpha_machine_vector *eb66_vecs[] __initdata =
      {
            &eb66_mv,
            &eb66p_mv
      };

      static struct alpha_machine_vector *marvel_vecs[] __initdata =
      {
            &marvel_ev7_mv,
      };

      static struct alpha_machine_vector *titan_vecs[] __initdata =
      {
            &titan_mv,        /* default   */
            &privateer_mv,          /* privateer */
            &titan_mv,        /* falcon    */
            &privateer_mv,          /* granite   */
      };

      static struct alpha_machine_vector *tsunami_vecs[]  __initdata =
      {
            NULL,
            &dp264_mv,        /* dp264 */
            &dp264_mv,        /* warhol */
            &dp264_mv,        /* windjammer */
            &monet_mv,        /* monet */
            &clipper_mv,            /* clipper */
            &dp264_mv,        /* goldrush */
            &webbrick_mv,           /* webbrick */
            &dp264_mv,        /* catamaran */
            NULL,             /* brisbane? */
            NULL,             /* melbourne? */
            NULL,             /* flying clipper? */
            &shark_mv,        /* shark */
      };

      /* ??? Do we need to distinguish between Rawhides?  */

      struct alpha_machine_vector *vec;

      /* Search the system tables first... */
      vec = NULL;
      if (type < ARRAY_SIZE(systype_vecs)) {
            vec = systype_vecs[type];
      } else if ((type > ST_API_BIAS) &&
               (type - ST_API_BIAS) < ARRAY_SIZE(api_vecs)) {
            vec = api_vecs[type - ST_API_BIAS];
      } else if ((type > ST_UNOFFICIAL_BIAS) &&
               (type - ST_UNOFFICIAL_BIAS) < ARRAY_SIZE(unofficial_vecs)) {
            vec = unofficial_vecs[type - ST_UNOFFICIAL_BIAS];
      }

      /* If we've not found one, try for a variation.  */

      if (!vec) {
            /* Member ID is a bit-field. */
            unsigned long member = (variation >> 10) & 0x3f;

            cpu &= 0xffffffff; /* make it usable */

            switch (type) {
            case ST_DEC_ALCOR:
                  if (member < ARRAY_SIZE(alcor_indices))
                        vec = alcor_vecs[alcor_indices[member]];
                  break;
            case ST_DEC_EB164:
                  if (member < ARRAY_SIZE(eb164_indices))
                        vec = eb164_vecs[eb164_indices[member]];
                  /* PC164 may show as EB164 variation with EV56 CPU,
                     but, since no true EB164 had anything but EV5... */
                  if (vec == &eb164_mv && cpu == EV56_CPU)
                        vec = &pc164_mv;
                  break;
            case ST_DEC_EB64P:
                  if (member < ARRAY_SIZE(eb64p_indices))
                        vec = eb64p_vecs[eb64p_indices[member]];
                  break;
            case ST_DEC_EB66:
                  if (member < ARRAY_SIZE(eb66_indices))
                        vec = eb66_vecs[eb66_indices[member]];
                  break;
            case ST_DEC_MARVEL:
                  if (member < ARRAY_SIZE(marvel_indices))
                        vec = marvel_vecs[marvel_indices[member]];
                  break;
            case ST_DEC_TITAN:
                  vec = titan_vecs[0];    /* default */
                  if (member < ARRAY_SIZE(titan_indices))
                        vec = titan_vecs[titan_indices[member]];
                  break;
            case ST_DEC_TSUNAMI:
                  if (member < ARRAY_SIZE(tsunami_indices))
                        vec = tsunami_vecs[tsunami_indices[member]];
                  break;
            case ST_DEC_1000:
                  if (cpu == EV5_CPU || cpu == EV56_CPU)
                        vec = &mikasa_primo_mv;
                  else
                        vec = &mikasa_mv;
                  break;
            case ST_DEC_NORITAKE:
                  if (cpu == EV5_CPU || cpu == EV56_CPU)
                        vec = &noritake_primo_mv;
                  else
                        vec = &noritake_mv;
                  break;
            case ST_DEC_2100_A500:
                  if (cpu == EV5_CPU || cpu == EV56_CPU)
                        vec = &sable_gamma_mv;
                  else
                        vec = &sable_mv;
                  break;
            }
      }
      return vec;
}

static struct alpha_machine_vector * __init
get_sysvec_byname(const char *name)
{
      static struct alpha_machine_vector *all_vecs[] __initdata =
      {
            &alcor_mv,
            &alphabook1_mv,
            &avanti_mv,
            &cabriolet_mv,
            &clipper_mv,
            &dp264_mv,
            &eb164_mv,
            &eb64p_mv,
            &eb66_mv,
            &eb66p_mv,
            &eiger_mv,
            &jensen_mv,
            &lx164_mv,
            &lynx_mv,
            &miata_mv,
            &mikasa_mv,
            &mikasa_primo_mv,
            &monet_mv,
            &nautilus_mv,
            &noname_mv,
            &noritake_mv,
            &noritake_primo_mv,
            &p2k_mv,
            &pc164_mv,
            &privateer_mv,
            &rawhide_mv,
            &ruffian_mv,
            &rx164_mv,
            &sable_mv,
            &sable_gamma_mv,
            &shark_mv,
            &sx164_mv,
            &takara_mv,
            &webbrick_mv,
            &wildfire_mv,
            &xl_mv,
            &xlt_mv
      };

      size_t i;

      for (i = 0; i < ARRAY_SIZE(all_vecs); ++i) {
            struct alpha_machine_vector *mv = all_vecs[i];
            if (strcasecmp(mv->vector_name, name) == 0)
                  return mv;
      }
      return NULL;
}

static void
get_sysnames(unsigned long type, unsigned long variation, unsigned long cpu,
           char **type_name, char **variation_name)
{
      unsigned long member;

      /* If not in the tables, make it UNKNOWN,
         else set type name to family */
      if (type < ARRAY_SIZE(systype_names)) {
            *type_name = systype_names[type];
      } else if ((type > ST_API_BIAS) &&
               (type - ST_API_BIAS) < ARRAY_SIZE(api_names)) {
            *type_name = api_names[type - ST_API_BIAS];
      } else if ((type > ST_UNOFFICIAL_BIAS) &&
               (type - ST_UNOFFICIAL_BIAS) < ARRAY_SIZE(unofficial_names)) {
            *type_name = unofficial_names[type - ST_UNOFFICIAL_BIAS];
      } else {
            *type_name = sys_unknown;
            *variation_name = sys_unknown;
            return;
      }

      /* Set variation to "0"; if variation is zero, done.  */
      *variation_name = systype_names[0];
      if (variation == 0) {
            return;
      }

      member = (variation >> 10) & 0x3f; /* member ID is a bit-field */

      cpu &= 0xffffffff; /* make it usable */

      switch (type) { /* select by family */
      default: /* default to variation "0" for now */
            break;
      case ST_DEC_EB164:
            if (member < ARRAY_SIZE(eb164_indices))
                  *variation_name = eb164_names[eb164_indices[member]];
            /* PC164 may show as EB164 variation, but with EV56 CPU,
               so, since no true EB164 had anything but EV5... */
            if (eb164_indices[member] == 0 && cpu == EV56_CPU)
                  *variation_name = eb164_names[1]; /* make it PC164 */
            break;
      case ST_DEC_ALCOR:
            if (member < ARRAY_SIZE(alcor_indices))
                  *variation_name = alcor_names[alcor_indices[member]];
            break;
      case ST_DEC_EB64P:
            if (member < ARRAY_SIZE(eb64p_indices))
                  *variation_name = eb64p_names[eb64p_indices[member]];
            break;
      case ST_DEC_EB66:
            if (member < ARRAY_SIZE(eb66_indices))
                  *variation_name = eb66_names[eb66_indices[member]];
            break;
      case ST_DEC_MARVEL:
            if (member < ARRAY_SIZE(marvel_indices))
                  *variation_name = marvel_names[marvel_indices[member]];
            break;
      case ST_DEC_RAWHIDE:
            if (member < ARRAY_SIZE(rawhide_indices))
                  *variation_name = rawhide_names[rawhide_indices[member]];
            break;
      case ST_DEC_TITAN:
            *variation_name = titan_names[0];   /* default */
            if (member < ARRAY_SIZE(titan_indices))
                  *variation_name = titan_names[titan_indices[member]];
            break;
      case ST_DEC_TSUNAMI:
            if (member < ARRAY_SIZE(tsunami_indices))
                  *variation_name = tsunami_names[tsunami_indices[member]];
            break;
      }
}

/*
 * A change was made to the HWRPB via an ECO and the following code
 * tracks a part of the ECO.  In HWRPB versions less than 5, the ECO
 * was not implemented in the console firmware.  If it's revision 5 or
 * greater we can get the name of the platform as an ASCII string from
 * the HWRPB.  That's what this function does.  It checks the revision
 * level and if the string is in the HWRPB it returns the address of
 * the string--a pointer to the name of the platform.
 *
 * Returns:
 *      - Pointer to a ASCII string if it's in the HWRPB
 *      - Pointer to a blank string if the data is not in the HWRPB.
 */

static char *
platform_string(void)
{
      struct dsr_struct *dsr;
      static char unk_system_string[] = "N/A";

      /* Go to the console for the string pointer.
       * If the rpb_vers is not 5 or greater the rpb
       * is old and does not have this data in it.
       */
      if (hwrpb->revision < 5)
            return (unk_system_string);
      else {
            /* The Dynamic System Recognition struct
             * has the system platform name starting
             * after the character count of the string.
             */
            dsr =  ((struct dsr_struct *)
                  ((char *)hwrpb + hwrpb->dsr_offset));
            return ((char *)dsr + (dsr->sysname_off +
                               sizeof(long)));
      }
}

static int
get_nr_processors(struct percpu_struct *cpubase, unsigned long num)
{
      struct percpu_struct *cpu;
      unsigned long i;
      int count = 0;

      for (i = 0; i < num; i++) {
            cpu = (struct percpu_struct *)
                  ((char *)cpubase + i*hwrpb->processor_size);
            if ((cpu->flags & 0x1cc) == 0x1cc)
                  count++;
      }
      return count;
}

static void
show_cache_size (struct seq_file *f, const char *which, int shape)
{
      if (shape == -1)
            seq_printf (f, "%s\t\t: n/a\n", which);
      else if (shape == 0)
            seq_printf (f, "%s\t\t: unknown\n", which);
      else
            seq_printf (f, "%s\t\t: %dK, %d-way, %db line\n",
                      which, shape >> 10, shape & 15,
                      1 << ((shape >> 4) & 15));
}

static int
show_cpuinfo(struct seq_file *f, void *slot)
{
      extern struct unaligned_stat {
            unsigned long count, va, pc;
      } unaligned[2];

      static char cpu_names[][8] = {
            "EV3", "EV4", "Simulate", "LCA4", "EV5", "EV45", "EV56",
            "EV6", "PCA56", "PCA57", "EV67", "EV68CB", "EV68AL",
            "EV68CX", "EV7", "EV79", "EV69"
      };

      struct percpu_struct *cpu = slot;
      unsigned int cpu_index;
      char *cpu_name;
      char *systype_name;
      char *sysvariation_name;
      int nr_processors;

      cpu_index = (unsigned) (cpu->type - 1);
      cpu_name = "Unknown";
      if (cpu_index < ARRAY_SIZE(cpu_names))
            cpu_name = cpu_names[cpu_index];

      get_sysnames(hwrpb->sys_type, hwrpb->sys_variation,
                 cpu->type, &systype_name, &sysvariation_name);

      nr_processors = get_nr_processors(cpu, hwrpb->nr_processors);

      seq_printf(f, "cpu\t\t\t: Alpha\n"
                  "cpu model\t\t: %s\n"
                  "cpu variation\t\t: %ld\n"
                  "cpu revision\t\t: %ld\n"
                  "cpu serial number\t: %s\n"
                  "system type\t\t: %s\n"
                  "system variation\t: %s\n"
                  "system revision\t\t: %ld\n"
                  "system serial number\t: %s\n"
                  "cycle frequency [Hz]\t: %lu %s\n"
                  "timer frequency [Hz]\t: %lu.%02lu\n"
                  "page size [bytes]\t: %ld\n"
                  "phys. address bits\t: %ld\n"
                  "max. addr. space #\t: %ld\n"
                  "BogoMIPS\t\t: %lu.%02lu\n"
                  "kernel unaligned acc\t: %ld (pc=%lx,va=%lx)\n"
                  "user unaligned acc\t: %ld (pc=%lx,va=%lx)\n"
                  "platform string\t\t: %s\n"
                  "cpus detected\t\t: %d\n",
                   cpu_name, cpu->variation, cpu->revision,
                   (char*)cpu->serial_no,
                   systype_name, sysvariation_name, hwrpb->sys_revision,
                   (char*)hwrpb->ssn,
                   est_cycle_freq ? : hwrpb->cycle_freq,
                   est_cycle_freq ? "est." : "",
                   hwrpb->intr_freq / 4096,
                   (100 * hwrpb->intr_freq / 4096) % 100,
                   hwrpb->pagesize,
                   hwrpb->pa_bits,
                   hwrpb->max_asn,
                   loops_per_jiffy / (500000/HZ),
                   (loops_per_jiffy / (5000/HZ)) % 100,
                   unaligned[0].count, unaligned[0].pc, unaligned[0].va,
                   unaligned[1].count, unaligned[1].pc, unaligned[1].va,
                   platform_string(), nr_processors);

#ifdef CONFIG_SMP
      seq_printf(f, "cpus active\t\t: %d\n"
                  "cpu active mask\t\t: %016lx\n",
                   num_online_cpus(), cpus_addr(cpu_possible_map)[0]);
#endif

      show_cache_size (f, "L1 Icache", alpha_l1i_cacheshape);
      show_cache_size (f, "L1 Dcache", alpha_l1d_cacheshape);
      show_cache_size (f, "L2 cache", alpha_l2_cacheshape);
      show_cache_size (f, "L3 cache", alpha_l3_cacheshape);

      return 0;
}

static int __init
read_mem_block(int *addr, int stride, int size)
{
      long nloads = size / stride, cnt, tmp;

      __asm__ __volatile__(
      "     rpcc    %0\n"
      "1:   ldl   %3,0(%2)\n"
      "     subq  %1,1,%1\n"
      /* Next two XORs introduce an explicit data dependency between
         consecutive loads in the loop, which will give us true load
         latency. */
      "     xor   %3,%2,%2\n"
      "     xor   %3,%2,%2\n"
      "     addq  %2,%4,%2\n"
      "     bne   %1,1b\n"
      "     rpcc  %3\n"
      "     subl  %3,%0,%0\n"
      : "=&r" (cnt), "=&r" (nloads), "=&r" (addr), "=&r" (tmp)
      : "r" (stride), "1" (nloads), "2" (addr));

      return cnt / (size / stride);
}

#define CSHAPE(totalsize, linesize, assoc) \
  ((totalsize & ~0xff) | (linesize << 4) | assoc)

/* ??? EV5 supports up to 64M, but did the systems with more than
   16M of BCACHE ever exist? */
#define MAX_BCACHE_SIZE 16*1024*1024

/* Note that the offchip caches are direct mapped on all Alphas. */
static int __init
external_cache_probe(int minsize, int width)
{
      int cycles, prev_cycles = 1000000;
      int stride = 1 << width;
      long size = minsize, maxsize = MAX_BCACHE_SIZE * 2;

      if (maxsize > (max_low_pfn + 1) << PAGE_SHIFT)
            maxsize = 1 << (ilog2(max_low_pfn + 1) + PAGE_SHIFT);

      /* Get the first block cached. */
      read_mem_block(__va(0), stride, size);

      while (size < maxsize) {
            /* Get an average load latency in cycles. */
            cycles = read_mem_block(__va(0), stride, size);
            if (cycles > prev_cycles * 2) {
                  /* Fine, we exceed the cache. */
                  printk("%ldK Bcache detected; load hit latency %d "
                         "cycles, load miss latency %d cycles\n",
                         size >> 11, prev_cycles, cycles);
                  return CSHAPE(size >> 1, width, 1);
            }
            /* Try to get the next block cached. */
            read_mem_block(__va(size), stride, size);
            prev_cycles = cycles;
            size <<= 1;
      }
      return -1;  /* No BCACHE found. */
}

static void __init
determine_cpu_caches (unsigned int cpu_type)
{
      int L1I, L1D, L2, L3;

      switch (cpu_type) {
      case EV4_CPU:
      case EV45_CPU:
        {
            if (cpu_type == EV4_CPU)
                  L1I = CSHAPE(8*1024, 5, 1);
            else
                  L1I = CSHAPE(16*1024, 5, 1);
            L1D = L1I;
            L3 = -1;
      
            /* BIU_CTL is a write-only Abox register.  PALcode has a
               shadow copy, and may be available from some versions
               of the CSERVE PALcall.  If we can get it, then

                  unsigned long biu_ctl, size;
                  size = 128*1024 * (1 << ((biu_ctl >> 28) & 7));
                  L2 = CSHAPE (size, 5, 1);

               Unfortunately, we can't rely on that.
            */
            L2 = external_cache_probe(128*1024, 5);
            break;
        }

      case LCA4_CPU:
        {
            unsigned long car, size;

            L1I = L1D = CSHAPE(8*1024, 5, 1);
            L3 = -1;

            car = *(vuip) phys_to_virt (0x120000078UL);
            size = 64*1024 * (1 << ((car >> 5) & 7));
            /* No typo -- 8 byte cacheline size.  Whodathunk.  */
            L2 = (car & 1 ? CSHAPE (size, 3, 1) : -1);
            break;
        }

      case EV5_CPU:
      case EV56_CPU:
        {
            unsigned long sc_ctl, width;

            L1I = L1D = CSHAPE(8*1024, 5, 1);

            /* Check the line size of the Scache.  */
            sc_ctl = *(vulp) phys_to_virt (0xfffff000a8UL);
            width = sc_ctl & 0x1000 ? 6 : 5;
            L2 = CSHAPE (96*1024, width, 3);

            /* BC_CONTROL and BC_CONFIG are write-only IPRs.  PALcode
               has a shadow copy, and may be available from some versions
               of the CSERVE PALcall.  If we can get it, then

                  unsigned long bc_control, bc_config, size;
                  size = 1024*1024 * (1 << ((bc_config & 7) - 1));
                  L3 = (bc_control & 1 ? CSHAPE (size, width, 1) : -1);

               Unfortunately, we can't rely on that.
            */
            L3 = external_cache_probe(1024*1024, width);
            break;
        }

      case PCA56_CPU:
      case PCA57_CPU:
        {
            unsigned long cbox_config, size;

            if (cpu_type == PCA56_CPU) {
                  L1I = CSHAPE(16*1024, 6, 1);
                  L1D = CSHAPE(8*1024, 5, 1);
            } else {
                  L1I = CSHAPE(32*1024, 6, 2);
                  L1D = CSHAPE(16*1024, 5, 1);
            }
            L3 = -1;

            cbox_config = *(vulp) phys_to_virt (0xfffff00008UL);
            size = 512*1024 * (1 << ((cbox_config >> 12) & 3));

#if 0
            L2 = ((cbox_config >> 31) & 1 ? CSHAPE (size, 6, 1) : -1);
#else
            L2 = external_cache_probe(512*1024, 6);
#endif
            break;
        }

      case EV6_CPU:
      case EV67_CPU:
      case EV68CB_CPU:
      case EV68AL_CPU:
      case EV68CX_CPU:
      case EV69_CPU:
            L1I = L1D = CSHAPE(64*1024, 6, 2);
            L2 = external_cache_probe(1024*1024, 6);
            L3 = -1;
            break;

      case EV7_CPU:
      case EV79_CPU:
            L1I = L1D = CSHAPE(64*1024, 6, 2);
            L2 = CSHAPE(7*1024*1024/4, 6, 7);
            L3 = -1;
            break;

      default:
            /* Nothing known about this cpu type.  */
            L1I = L1D = L2 = L3 = 0;
            break;
      }

      alpha_l1i_cacheshape = L1I;
      alpha_l1d_cacheshape = L1D;
      alpha_l2_cacheshape = L2;
      alpha_l3_cacheshape = L3;
}

/*
 * We show only CPU #0 info.
 */
static void *
c_start(struct seq_file *f, loff_t *pos)
{
      return *pos ? NULL : (char *)hwrpb + hwrpb->processor_offset;
}

static void *
c_next(struct seq_file *f, void *v, loff_t *pos)
{
      return NULL;
}

static void
c_stop(struct seq_file *f, void *v)
{
}

const struct seq_operations cpuinfo_op = {
      .start      = c_start,
      .next = c_next,
      .stop = c_stop,
      .show = show_cpuinfo,
};


static int
alpha_panic_event(struct notifier_block *this, unsigned long event, void *ptr)
{
#if 1
      /* FIXME FIXME FIXME */
      /* If we are using SRM and serial console, just hard halt here. */
      if (alpha_using_srm && srmcons_output)
            __halt();
#endif
        return NOTIFY_DONE;
}

static __init int add_pcspkr(void)
{
      struct platform_device *pd;
      int ret;

      pd = platform_device_alloc("pcspkr", -1);
      if (!pd)
            return -ENOMEM;

      ret = platform_device_add(pd);
      if (ret)
            platform_device_put(pd);

      return ret;
}
device_initcall(add_pcspkr);

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