arch/alpha/kernel/setup.c

/* */
This source file includes following definitions.
init_pit
find_end_memory
setup_arch
sys_ioperm
get_cpuinfo
   1 /*
   2  *  linux/arch/alpha/kernel/setup.c
   3  *
   4  *  Copyright (C) 1995  Linus Torvalds
   5  */
   6 
   7 /*
   8  * bootup setup stuff..
   9  */
  10 
  11 #include <linux/errno.h>
  12 #include <linux/sched.h>
  13 #include <linux/kernel.h>
  14 #include <linux/mm.h>
  15 #include <linux/stddef.h>
  16 #include <linux/unistd.h>
  17 #include <linux/ptrace.h>
  18 #include <linux/malloc.h>
  19 #include <linux/ldt.h>
  20 #include <linux/user.h>
  21 #include <linux/a.out.h>
  22 #include <linux/tty.h>
  23 #include <linux/delay.h>
  24 
  25 #include <asm/segment.h>
  26 #include <asm/system.h>
  27 #include <asm/hwrpb.h>
  28 #include <asm/dma.h>
  29 #include <asm/io.h>
  30 
  31 struct hae hae = {
  32         0,
  33         (unsigned long*) HAE_ADDRESS
  34 };
  35 
  36 struct hwrpb_struct *hwrpb;
  37 
  38 unsigned char aux_device_present = 0xaa;
  39 
  40 /*
  41  * This is setup by the secondary bootstrap loader.  Because
  42  * the zero page is zeroed out as soon as the vm system is
  43  * initialized, we need to copy things out into a more permanent
  44  * place.
  45  */
  46 #define PARAM                   ZERO_PGE
  47 #define COMMAND_LINE            ((char*)(PARAM + 0x0000))
  48 #define COMMAND_LINE_SIZE       256
  49 
  50 static char command_line[COMMAND_LINE_SIZE] = { 0, };
  51 
  52 /*
  53  * The format of "screen_info" is strange, and due to early
  54  * i386-setup code. This is just enough to make the console
  55  * code think we're on a VGA color display.
  56  */
  57 struct screen_info screen_info = {
  58         0, 25,                  /* orig-x, orig-y */
  59         { 0, 0 },               /* unused */
  60         0,                      /* orig-video-page */
  61         0,                      /* orig-video-mode */
  62         80,                     /* orig-video-cols */
  63         0,0,0,                  /* ega_ax, ega_bx, ega_cx */
  64         25,                     /* orig-video-lines */
  65         1,                      /* orig-video-isVGA */
  66         16                      /* orig-video-points */
  67 };
  68 
  69 /*
  70  * Initialize Programmable Interval Timers with standard values.  Some
  71  * drivers depend on them being initialized (e.g., joystick driver).
  72  */
  73 static void init_pit (void)
     /*  */
  74 {
  75     outb(0x54, 0x43);   /* counter 1: refresh timer */
  76     outb(0x18, 0x41);
  77 
  78     outb(0x36, 0x43);   /* counter 0: system timer */
  79     outb(0x00, 0x40);
  80     outb(0x00, 0x40);
  81 
  82     outb(0xb6, 0x43);   /* counter 2: speaker */
  83     outb(0x31, 0x42);
  84     outb(0x13, 0x42);
  85 }
  86 
  87 static unsigned long find_end_memory(void)
     /*  */
  88 {
  89         int i;
  90         unsigned long high = 0;
  91         struct memclust_struct * cluster;
  92         struct memdesc_struct * memdesc;
  93 
  94         memdesc = (struct memdesc_struct *)
  95           (INIT_HWRPB->mddt_offset + (unsigned long) INIT_HWRPB);
  96         cluster = memdesc->cluster;
  97         for (i = memdesc->numclusters ; i > 0; i--, cluster++) {
  98                 unsigned long tmp;
  99                 tmp = (cluster->start_pfn + cluster->numpages) << PAGE_SHIFT;
 100                 if (tmp > high)
 101                         high = tmp;
 102         }
 103         /* round it up to an even number of pages.. */
 104         high = (high + PAGE_SIZE) & (PAGE_MASK*2);
 105         return PAGE_OFFSET + high;
 106 }
 107 
 108 void setup_arch(char **cmdline_p,
     /*  */
 109         unsigned long * memory_start_p, unsigned long * memory_end_p)
 110 {
 111         extern int _end;
 112 
 113         init_pit();
 114 
 115         hwrpb = (struct hwrpb_struct*)(IDENT_ADDR + INIT_HWRPB->phys_addr);
 116 
 117         set_hae(hae.cache);     /* sync HAE register w/hae_cache */
 118         wrmces(0x7);            /* reset enable correctable error reports */
 119 
 120         ROOT_DEV = to_kdev_t(0x0802);           /* sda2 */
 121         command_line[COMMAND_LINE_SIZE - 1] = '\0';
 122         strcpy(command_line, COMMAND_LINE);
 123 
 124         *cmdline_p = command_line;
 125         *memory_start_p = (unsigned long) &_end;
 126         *memory_end_p = find_end_memory();
 127 
 128 #if defined(CONFIG_ALPHA_LCA)
 129         *memory_start_p = lca_init(*memory_start_p, *memory_end_p);
 130 #elif defined(CONFIG_ALPHA_APECS)
 131         *memory_start_p = apecs_init(*memory_start_p, *memory_end_p);
 132 #endif
 133 }
 134 
 135 asmlinkage int sys_ioperm(unsigned long from, unsigned long num, int on)
     /*  */
 136 {
 137         return -EIO;
 138 }
 139 
 140 
 141 /*
 142  * BUFFER is PAGE_SIZE bytes long.
 143  */
 144 int get_cpuinfo(char *buffer)
     /*  */
 145 {
 146         const char *cpu_name[] = {
 147                 "EV3", "EV4", "Unknown 1", "LCA4", "EV5", "EV45"
 148         };
 149 #       define SYSTYPE_NAME_BIAS        20
 150         const char *systype_name[] = {
 151                 "Cabriolet", "EB66P", "-18", "-17", "-16", "-15",
 152                 "-14", "-13", "-12", "-11", "-10", "-9", "-8",
 153                 "-7", "-6", "-5", "-4", "-3", "-2", "-1", "0",
 154                 "ADU", "Cobra", "Ruby", "Flamingo", "5", "Jensen",
 155                 "Pelican", "8", "Sable", "AXPvme", "Noname",
 156                 "Turbolaser", "Avanti", "Mustang", "Alcor", "16",
 157                 "Mikasa", "18", "EB66", "EB64+"
 158         };
 159         struct percpu_struct *cpu;
 160         unsigned int cpu_index;
 161         long sysname_index;
 162         extern struct unaligned_stat {
 163                 unsigned long count, va, pc;
 164         } unaligned[2];
 165 #       define N(a)     (sizeof(a)/sizeof(a[0]))
 166 
 167         cpu = (struct percpu_struct*)((char*)hwrpb + hwrpb->processor_offset);
 168         cpu_index = (unsigned) (cpu->type - 1);
 169         sysname_index = hwrpb->sys_type + SYSTYPE_NAME_BIAS;
 170 
 171         return sprintf(buffer,
 172                        "cpu\t\t\t: Alpha\n"
 173                        "cpu model\t\t: %s\n"
 174                        "cpu variation\t\t: %ld\n"
 175                        "cpu revision\t\t: %ld\n"
 176                        "cpu serial number\t: %s\n"
 177                        "system type\t\t: %s\n"
 178                        "system variation\t: %ld\n"
 179                        "system revision\t\t: %ld\n"
 180                        "system serial number\t: %s\n"
 181                        "cycle frequency [Hz]\t: %lu\n"
 182                        "timer frequency [Hz]\t: %lu.%02lu\n"
 183                        "page size [bytes]\t: %ld\n"
 184                        "phys. address bits\t: %ld\n"
 185                        "max. addr. space #\t: %ld\n"
 186                        "BogoMIPS\t\t: %lu.%02lu\n"
 187                        "kernel unaligned acc\t: %ld (pc=%lx,va=%lx)\n"
 188                        "user unaligned acc\t: %ld (pc=%lx,va=%lx)\n",
 189 
 190                        (cpu_index < N(cpu_name)
 191                         ? cpu_name[cpu_index] : "Unknown"),
 192                        cpu->variation, cpu->revision, (char*)cpu->serial_no,
 193                        (sysname_index < N(systype_name)
 194                         ? systype_name[sysname_index] : "Unknown"),
 195                        hwrpb->sys_variation, hwrpb->sys_revision,
 196                        (char*)hwrpb->ssn,
 197                        hwrpb->cycle_freq,
 198                        hwrpb->intr_freq / 4096,
 199                        (100 * hwrpb->intr_freq / 4096) % 100,
 200                        hwrpb->pagesize,
 201                        hwrpb->pa_bits,
 202                        hwrpb->max_asn,
 203                        loops_per_sec / 500000, (loops_per_sec / 5000) % 100,
 204                        unaligned[0].count, unaligned[0].pc, unaligned[0].va,
 205                        unaligned[1].count, unaligned[1].pc, unaligned[1].va);
 206 #       undef N
 207 }
/* */
root/arch/alpha/kernel/setup.c

DEFINITIONS
