release/src-rt-6.x/linux/linux-2.6/arch/m68knommu/kernel/setup.c

   1 /*
   2  *  linux/arch/m68knommu/kernel/setup.c
   3  *
   4  *  Copyright (C) 1999-2004  Greg Ungerer (gerg@snapgear.com)
   5  *  Copyright (C) 1998,1999  D. Jeff Dionne <jeff@lineo.ca>
   6  *  Copyleft  ()) 2000       James D. Schettine {james@telos-systems.com}
   7  *  Copyright (C) 1998       Kenneth Albanowski <kjahds@kjahds.com>
   8  *  Copyright (C) 1995       Hamish Macdonald
   9  *  Copyright (C) 2000       Lineo Inc. (www.lineo.com)
  10  *  Copyright (C) 2001       Lineo, Inc. <www.lineo.com>
  11  *
  12  *  68VZ328 Fixes/support    Evan Stawnyczy <e@lineo.ca>
  13  */
  14
  15 /*
  16  * This file handles the architecture-dependent parts of system setup
  17  */
  18
  19 #include <linux/kernel.h>
  20 #include <linux/sched.h>
  21 #include <linux/delay.h>
  22 #include <linux/interrupt.h>
  23 #include <linux/fs.h>
  24 #include <linux/fb.h>
  25 #include <linux/module.h>
  26 #include <linux/console.h>
  27 #include <linux/genhd.h>
  28 #include <linux/errno.h>
  29 #include <linux/string.h>
  30 #include <linux/major.h>
  31 #include <linux/bootmem.h>
  32 #include <linux/seq_file.h>
  33 #include <linux/root_dev.h>
  34 #include <linux/init.h>
  35
  36 #include <asm/setup.h>
  37 #include <asm/irq.h>
  38 #include <asm/machdep.h>
  39 #include <asm/pgtable.h>
  40
  41 unsigned long memory_start;
  42 unsigned long memory_end;
  43
  44 EXPORT_SYMBOL(memory_start);
  45 EXPORT_SYMBOL(memory_end);
  46
  47 char __initdata command_line[COMMAND_LINE_SIZE];
  48
  49 /* setup some dummy routines */
  50 static void dummy_waitbut(void)
  51 {
  52 }
  53
  54 void (*mach_sched_init) (irq_handler_t handler);
  55 void (*mach_tick)( void );
  56 /* machine dependent keyboard functions */
  57 int (*mach_keyb_init) (void);
  58 int (*mach_kbdrate) (struct kbd_repeat *);
  59 void (*mach_kbd_leds) (unsigned int);
  60 /* machine dependent irq functions */
  61 void (*mach_init_IRQ) (void);
  62 irq_handler_t mach_default_handler;
  63 int (*mach_get_irq_list) (struct seq_file *, void *);
  64 void (*mach_process_int) (int irq, struct pt_regs *fp);
  65 void (*mach_trap_init) (void);
  66 /* machine dependent timer functions */
  67 unsigned long (*mach_gettimeoffset) (void);
  68 void (*mach_gettod) (int*, int*, int*, int*, int*, int*);
  69 int (*mach_hwclk) (int, struct rtc_time*);
  70 int (*mach_set_clock_mmss) (unsigned long);
  71 void (*mach_mksound)( unsigned int count, unsigned int ticks );
  72 void (*mach_reset)( void );
  73 void (*waitbut)(void) = dummy_waitbut;
  74 void (*mach_debug_init)(void);
  75 void (*mach_halt)( void );
  76 void (*mach_power_off)( void );
  77
  78
  79 #ifdef CONFIG_M68000
  80         #define CPU "MC68000"
  81 #endif
  82 #ifdef CONFIG_M68328
  83         #define CPU "MC68328"
  84 #endif
  85 #ifdef CONFIG_M68EZ328
  86         #define CPU "MC68EZ328"
  87 #endif
  88 #ifdef CONFIG_M68VZ328
  89         #define CPU "MC68VZ328"
  90 #endif
  91 #ifdef CONFIG_M68332
  92         #define CPU "MC68332"
  93 #endif
  94 #ifdef CONFIG_M68360
  95         #define CPU "MC68360"
  96 #endif
  97 #if defined(CONFIG_M5206)
  98         #define CPU "COLDFIRE(m5206)"
  99 #endif
 100 #if defined(CONFIG_M5206e)
 101         #define CPU "COLDFIRE(m5206e)"
 102 #endif
 103 #if defined(CONFIG_M520x)
 104         #define CPU "COLDFIRE(m520x)"
 105 #endif
 106 #if defined(CONFIG_M523x)
 107         #define CPU "COLDFIRE(m523x)"
 108 #endif
 109 #if defined(CONFIG_M5249)
 110         #define CPU "COLDFIRE(m5249)"
 111 #endif
 112 #if defined(CONFIG_M5271)
 113         #define CPU "COLDFIRE(m5270/5271)"
 114 #endif
 115 #if defined(CONFIG_M5272)
 116         #define CPU "COLDFIRE(m5272)"
 117 #endif
 118 #if defined(CONFIG_M5275)
 119         #define CPU "COLDFIRE(m5274/5275)"
 120 #endif
 121 #if defined(CONFIG_M528x)
 122         #define CPU "COLDFIRE(m5280/5282)"
 123 #endif
 124 #if defined(CONFIG_M5307)
 125         #define CPU "COLDFIRE(m5307)"
 126 #endif
 127 #if defined(CONFIG_M532x)
 128         #define CPU "COLDFIRE(m532x)"
 129 #endif
 130 #if defined(CONFIG_M5407)
 131         #define CPU "COLDFIRE(m5407)"
 132 #endif
 133 #ifndef CPU
 134         #define CPU "UNKNOWN"
 135 #endif
 136
 137 /* (es) */
 138 /* note: why is this defined here?  the must be a better place to put this */
 139 #if defined( CONFIG_TELOS) || defined( CONFIG_UCDIMM ) || defined( CONFIG_UCSIMM ) || defined(CONFIG_DRAGEN2) || (defined( CONFIG_PILOT ) && defined( CONFIG_M68328 ))
 140 #define CAT_ROMARRAY
 141 #endif
 142 /* (/es) */
 143
 144 extern int _stext, _etext, _sdata, _edata, _sbss, _ebss, _end;
 145 extern int _ramstart, _ramend;
 146
 147 void setup_arch(char **cmdline_p)
 148 {
 149         int bootmap_size;
 150
 151 #if defined(CAT_ROMARRAY) && defined(DEBUG)
 152         extern int __data_rom_start;
 153         extern int __data_start;
 154         int *romarray = (int *)((int) &__data_rom_start +
 155                               (int)&_edata - (int)&__data_start);
 156 #endif
 157
 158         memory_start = PAGE_ALIGN(_ramstart);
 159         memory_end = _ramend; /* by now the stack is part of the init task */
 160
 161         init_mm.start_code = (unsigned long) &_stext;
 162         init_mm.end_code = (unsigned long) &_etext;
 163         init_mm.end_data = (unsigned long) &_edata;
 164         init_mm.brk = (unsigned long) 0;
 165
 166         config_BSP(&command_line[0], sizeof(command_line));
 167
 168         printk(KERN_INFO "\x0F\r\n\nuClinux/" CPU "\n");
 169
 170 #ifdef CONFIG_UCDIMM
 171         printk(KERN_INFO "uCdimm by Lineo, Inc. <www.lineo.com>\n");
 172 #endif
 173 #ifdef CONFIG_M68VZ328
 174         printk(KERN_INFO "M68VZ328 support by Evan Stawnyczy <e@lineo.ca>\n");
 175 #endif
 176 #ifdef CONFIG_COLDFIRE
 177         printk(KERN_INFO "COLDFIRE port done by Greg Ungerer, gerg@snapgear.com\n");
 178 #ifdef CONFIG_M5307
 179         printk(KERN_INFO "Modified for M5307 by Dave Miller, dmiller@intellistor.com\n");
 180 #endif
 181 #ifdef CONFIG_ELITE
 182         printk(KERN_INFO "Modified for M5206eLITE by Rob Scott, rscott@mtrob.fdns.net\n");
 183 #endif
 184 #ifdef CONFIG_TELOS
 185         printk(KERN_INFO "Modified for Omnia ToolVox by James D. Schettine, james@telos-systems.com\n");
 186 #endif
 187 #endif
 188         printk(KERN_INFO "Flat model support (C) 1998,1999 Kenneth Albanowski, D. Jeff Dionne\n");
 189
 190 #if defined( CONFIG_PILOT ) && defined( CONFIG_M68328 )
 191         printk(KERN_INFO "TRG SuperPilot FLASH card support <info@trgnet.com>\n");
 192 #endif
 193
 194 #if defined( CONFIG_PILOT ) && defined( CONFIG_M68EZ328 )
 195         printk(KERN_INFO "PalmV support by Lineo Inc. <jeff@uclinux.com>\n");
 196 #endif
 197
 198 #ifdef CONFIG_M68EZ328ADS
 199         printk(KERN_INFO "M68EZ328ADS board support (C) 1999 Vladimir Gurevich <vgurevic@cisco.com>\n");
 200 #endif
 201
 202 #ifdef CONFIG_ALMA_ANS
 203         printk(KERN_INFO "Alma Electronics board support (C) 1999 Vladimir Gurevich <vgurevic@cisco.com>\n");
 204 #endif
 205 #if defined (CONFIG_M68360)
 206         printk(KERN_INFO "QUICC port done by SED Systems <hamilton@sedsystems.ca>,\n");
 207         printk(KERN_INFO "based on 2.0.38 port by Lineo Inc. <mleslie@lineo.com>.\n");
 208 #endif
 209 #ifdef CONFIG_DRAGEN2
 210         printk(KERN_INFO "DragonEngine II board support by Georges Menie\n");
 211 #endif
 212 #ifdef CONFIG_M5235EVB
 213         printk(KERN_INFO "Motorola M5235EVB support (C)2005 Syn-tech Systems, Inc. (Jate Sujjavanich)");
 214 #endif
 215
 216 #ifdef DEBUG
 217         printk(KERN_DEBUG "KERNEL -> TEXT=0x%06x-0x%06x DATA=0x%06x-0x%06x "
 218                 "BSS=0x%06x-0x%06x\n", (int) &_stext, (int) &_etext,
 219                 (int) &_sdata, (int) &_edata,
 220                 (int) &_sbss, (int) &_ebss);
 221         printk(KERN_DEBUG "KERNEL -> ROMFS=0x%06x-0x%06x MEM=0x%06x-0x%06x "
 222                 "STACK=0x%06x-0x%06x\n",
 223 #ifdef CAT_ROMARRAY
 224                 (int) romarray, ((int) romarray) + romarray[2],
 225 #else
 226                 (int) &_ebss, (int) memory_start,
 227 #endif
 228                 (int) memory_start, (int) memory_end,
 229                 (int) memory_end, (int) _ramend);
 230 #endif
 231
 232         /* Keep a copy of command line */
 233         *cmdline_p = &command_line[0];
 234         memcpy(boot_command_line, command_line, COMMAND_LINE_SIZE);
 235         boot_command_line[COMMAND_LINE_SIZE-1] = 0;
 236
 237 #ifdef DEBUG
 238         if (strlen(*cmdline_p))
 239                 printk(KERN_DEBUG "Command line: '%s'\n", *cmdline_p);
 240 #endif
 241
 242 #if defined(CONFIG_FRAMEBUFFER_CONSOLE) && defined(CONFIG_DUMMY_CONSOLE)
 243         conswitchp = &dummy_con;
 244 #endif
 245
 246         /*
 247          * Give all the memory to the bootmap allocator, tell it to put the
 248          * boot mem_map at the start of memory.
 249          */
 250         bootmap_size = init_bootmem_node(
 251                         NODE_DATA(0),
 252                         memory_start >> PAGE_SHIFT, /* map goes here */
 253                         PAGE_OFFSET >> PAGE_SHIFT,      /* 0 on coldfire */
 254                         memory_end >> PAGE_SHIFT);
 255         /*
 256          * Free the usable memory, we have to make sure we do not free
 257          * the bootmem bitmap so we then reserve it after freeing it :-)
 258          */
 259         free_bootmem(memory_start, memory_end - memory_start);
 260         reserve_bootmem(memory_start, bootmap_size);
 261
 262         /*
 263          * Get kmalloc into gear.
 264          */
 265         paging_init();
 266 }
 267
 268 /*
 269  *      Get CPU information for use by the procfs.
 270  */
 271
 272 static int show_cpuinfo(struct seq_file *m, void *v)
 273 {
 274     char *cpu, *mmu, *fpu;
 275     u_long clockfreq;
 276
 277     cpu = CPU;
 278     mmu = "none";
 279     fpu = "none";
 280
 281 #ifdef CONFIG_COLDFIRE
 282     clockfreq = (loops_per_jiffy*HZ)*3;
 283 #else
 284     clockfreq = (loops_per_jiffy*HZ)*16;
 285 #endif
 286
 287     seq_printf(m, "CPU:\t\t%s\n"
 288                    "MMU:\t\t%s\n"
 289                    "FPU:\t\t%s\n"
 290                    "Clocking:\t%lu.%1luMHz\n"
 291                    "BogoMips:\t%lu.%02lu\n"
 292                    "Calibration:\t%lu loops\n",
 293                    cpu, mmu, fpu,
 294                    clockfreq/1000000,(clockfreq/100000)%10,
 295                    (loops_per_jiffy*HZ)/500000,((loops_per_jiffy*HZ)/5000)%100,
 296                    (loops_per_jiffy*HZ));
 297
 298         return 0;
 299 }
 300
 301 static void *c_start(struct seq_file *m, loff_t *pos)
 302 {
 303         return *pos < NR_CPUS ? ((void *) 0x12345678) : NULL;
 304 }
 305
 306 static void *c_next(struct seq_file *m, void *v, loff_t *pos)
 307 {
 308         ++*pos;
 309         return c_start(m, pos);
 310 }
 311
 312 static void c_stop(struct seq_file *m, void *v)
 313 {
 314 }
 315
 316 struct seq_operations cpuinfo_op = {
 317         .start  = c_start,
 318         .next   = c_next,
 319         .stop   = c_stop,
 320         .show   = show_cpuinfo,
 321 };
 322
 323 void arch_gettod(int *year, int *mon, int *day, int *hour,
 324                  int *min, int *sec)
 325 {
 326         if (mach_gettod)
 327                 mach_gettod(year, mon, day, hour, min, sec);
 328         else
 329                 *year = *mon = *day = *hour = *min = *sec = 0;
 330 }
 331