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
  40 #ifdef CONFIG_BLK_DEV_INITRD
  41 #include <asm/pgtable.h>
  42 #endif
  43
  44 unsigned long memory_start;
  45 unsigned long memory_end;
  46
  47 EXPORT_SYMBOL(memory_start);
  48 EXPORT_SYMBOL(memory_end);
  49
  50 char command_line[COMMAND_LINE_SIZE];
  51
  52 /* setup some dummy routines */
  53 static void dummy_waitbut(void)
  54 {
  55 }
  56
  57 void (*mach_sched_init) (irqreturn_t (*handler)(int, void *, struct pt_regs *));
  58 void (*mach_tick)( void );
  59 /* machine dependent keyboard functions */
  60 int (*mach_keyb_init) (void);
  61 int (*mach_kbdrate) (struct kbd_repeat *);
  62 void (*mach_kbd_leds) (unsigned int);
  63 /* machine dependent irq functions */
  64 void (*mach_init_IRQ) (void);
  65 irqreturn_t (*(*mach_default_handler)[]) (int, void *, struct pt_regs *);
  66 int (*mach_get_irq_list) (struct seq_file *, void *);
  67 void (*mach_process_int) (int irq, struct pt_regs *fp);
  68 void (*mach_trap_init) (void);
  69 /* machine dependent timer functions */
  70 unsigned long (*mach_gettimeoffset) (void);
  71 void (*mach_gettod) (int*, int*, int*, int*, int*, int*);
  72 int (*mach_hwclk) (int, struct hwclk_time*);
  73 int (*mach_set_clock_mmss) (unsigned long);
  74 void (*mach_mksound)( unsigned int count, unsigned int ticks );
  75 void (*mach_reset)( void );
  76 void (*waitbut)(void) = dummy_waitbut;
  77 void (*mach_debug_init)(void);
  78 void (*mach_halt)( void );
  79 void (*mach_power_off)( void );
  80
  81
  82 #ifdef CONFIG_M68000
  83         #define CPU "MC68000"
  84 #endif
  85 #ifdef CONFIG_M68328
  86         #define CPU "MC68328"
  87 #endif
  88 #ifdef CONFIG_M68EZ328
  89         #define CPU "MC68EZ328"
  90 #endif
  91 #ifdef CONFIG_M68VZ328
  92         #define CPU "MC68VZ328"
  93 #endif
  94 #ifdef CONFIG_M68332
  95         #define CPU "MC68332"
  96 #endif
  97 #ifdef CONFIG_M68360
  98         #define CPU "MC68360"
  99 #endif
 100 #if defined(CONFIG_M5206)
 101         #define CPU "COLDFIRE(m5206)"
 102 #endif
 103 #if defined(CONFIG_M5206e)
 104         #define CPU "COLDFIRE(m5206e)"
 105 #endif
 106 #if defined(CONFIG_M520x)
 107         #define CPU "COLDFIRE(m520x)"
 108 #endif
 109 #if defined(CONFIG_M523x)
 110         #define CPU "COLDFIRE(m523x)"
 111 #endif
 112 #if defined(CONFIG_M5249)
 113         #define CPU "COLDFIRE(m5249)"
 114 #endif
 115 #if defined(CONFIG_M5271)
 116         #define CPU "COLDFIRE(m5270/5271)"
 117 #endif
 118 #if defined(CONFIG_M5272)
 119         #define CPU "COLDFIRE(m5272)"
 120 #endif
 121 #if defined(CONFIG_M5275)
 122         #define CPU "COLDFIRE(m5274/5275)"
 123 #endif
 124 #if defined(CONFIG_M528x)
 125         #define CPU "COLDFIRE(m5280/5282)"
 126 #endif
 127 #if defined(CONFIG_M5307)
 128         #define CPU "COLDFIRE(m5307)"
 129 #endif
 130 #if defined(CONFIG_M532x)
 131         #define CPU "COLDFIRE(m532x)"
 132 #endif
 133 #if defined(CONFIG_M5407)
 134         #define CPU "COLDFIRE(m5407)"
 135 #endif
 136 #ifndef CPU
 137         #define CPU "UNKNOWN"
 138 #endif
 139
 140 /* (es) */
 141 /* note: why is this defined here?  the must be a better place to put this */
 142 #if defined( CONFIG_TELOS) || defined( CONFIG_UCDIMM ) || defined( CONFIG_UCSIMM ) || defined(CONFIG_DRAGEN2) || (defined( CONFIG_PILOT ) && defined( CONFIG_M68328 ))
 143 #define CAT_ROMARRAY
 144 #endif
 145 /* (/es) */
 146
 147 extern int _stext, _etext, _sdata, _edata, _sbss, _ebss, _end;
 148 extern int _ramstart, _ramend;
 149
 150 void setup_arch(char **cmdline_p)
 151 {
 152         int bootmap_size;
 153
 154 #if defined(CAT_ROMARRAY) && defined(DEBUG)
 155         extern int __data_rom_start;
 156         extern int __data_start;
 157         int *romarray = (int *)((int) &__data_rom_start +
 158                               (int)&_edata - (int)&__data_start);
 159 #endif
 160
 161         memory_start = PAGE_ALIGN(_ramstart);
 162         memory_end = _ramend; /* by now the stack is part of the init task */
 163
 164         init_mm.start_code = (unsigned long) &_stext;
 165         init_mm.end_code = (unsigned long) &_etext;
 166         init_mm.end_data = (unsigned long) &_edata;
 167         init_mm.brk = (unsigned long) 0;
 168
 169         config_BSP(&command_line[0], sizeof(command_line));
 170
 171         printk(KERN_INFO "\x0F\r\n\nuClinux/" CPU "\n");
 172
 173 #ifdef CONFIG_UCDIMM
 174         printk(KERN_INFO "uCdimm by Lineo, Inc. <www.lineo.com>\n");
 175 #endif
 176 #ifdef CONFIG_M68VZ328
 177         printk(KERN_INFO "M68VZ328 support by Evan Stawnyczy <e@lineo.ca>\n");
 178 #endif
 179 #ifdef CONFIG_COLDFIRE
 180         printk(KERN_INFO "COLDFIRE port done by Greg Ungerer, gerg@snapgear.com\n");
 181 #ifdef CONFIG_M5307
 182         printk(KERN_INFO "Modified for M5307 by Dave Miller, dmiller@intellistor.com\n");
 183 #endif
 184 #ifdef CONFIG_ELITE
 185         printk(KERN_INFO "Modified for M5206eLITE by Rob Scott, rscott@mtrob.fdns.net\n");
 186 #endif
 187 #ifdef CONFIG_TELOS
 188         printk(KERN_INFO "Modified for Omnia ToolVox by James D. Schettine, james@telos-systems.com\n");
 189 #endif
 190 #endif
 191         printk(KERN_INFO "Flat model support (C) 1998,1999 Kenneth Albanowski, D. Jeff Dionne\n");
 192
 193 #if defined( CONFIG_PILOT ) && defined( CONFIG_M68328 )
 194         printk(KERN_INFO "TRG SuperPilot FLASH card support <info@trgnet.com>\n");
 195 #endif
 196
 197 #if defined( CONFIG_PILOT ) && defined( CONFIG_M68EZ328 )
 198         printk(KERN_INFO "PalmV support by Lineo Inc. <jeff@uclinux.com>\n");
 199 #endif
 200
 201 #ifdef CONFIG_M68EZ328ADS
 202         printk(KERN_INFO "M68EZ328ADS board support (C) 1999 Vladimir Gurevich <vgurevic@cisco.com>\n");
 203 #endif
 204
 205 #ifdef CONFIG_ALMA_ANS
 206         printk(KERN_INFO "Alma Electronics board support (C) 1999 Vladimir Gurevich <vgurevic@cisco.com>\n");
 207 #endif
 208 #if defined (CONFIG_M68360)
 209         printk(KERN_INFO "QUICC port done by SED Systems <hamilton@sedsystems.ca>,\n");
 210         printk(KERN_INFO "based on 2.0.38 port by Lineo Inc. <mleslie@lineo.com>.\n");
 211 #endif
 212 #ifdef CONFIG_DRAGEN2
 213         printk(KERN_INFO "DragonEngine II board support by Georges Menie\n");
 214 #endif
 215 #ifdef CONFIG_M5235EVB
 216         printk(KERN_INFO "Motorola M5235EVB support (C)2005 Syn-tech Systems, Inc. (Jate Sujjavanich)");
 217 #endif
 218
 219 #ifdef DEBUG
 220         printk(KERN_DEBUG "KERNEL -> TEXT=0x%06x-0x%06x DATA=0x%06x-0x%06x "
 221                 "BSS=0x%06x-0x%06x\n", (int) &_stext, (int) &_etext,
 222                 (int) &_sdata, (int) &_edata,
 223                 (int) &_sbss, (int) &_ebss);
 224         printk(KERN_DEBUG "KERNEL -> ROMFS=0x%06x-0x%06x MEM=0x%06x-0x%06x "
 225                 "STACK=0x%06x-0x%06x\n",
 226 #ifdef CAT_ROMARRAY
 227                 (int) romarray, ((int) romarray) + romarray[2],
 228 #else
 229                 (int) &_ebss, (int) memory_start,
 230 #endif
 231                 (int) memory_start, (int) memory_end,
 232                 (int) memory_end, (int) _ramend);
 233 #endif
 234
 235         /* Keep a copy of command line */
 236         *cmdline_p = &command_line[0];
 237         memcpy(saved_command_line, command_line, COMMAND_LINE_SIZE);
 238         saved_command_line[COMMAND_LINE_SIZE-1] = 0;
 239
 240 #ifdef DEBUG
 241         if (strlen(*cmdline_p))
 242                 printk(KERN_DEBUG "Command line: '%s'\n", *cmdline_p);
 243 #endif
 244
 245 #if defined(CONFIG_FRAMEBUFFER_CONSOLE) && defined(CONFIG_DUMMY_CONSOLE)
 246         conswitchp = &dummy_con;
 247 #endif
 248
 249         /*
 250          * Give all the memory to the bootmap allocator, tell it to put the
 251          * boot mem_map at the start of memory.
 252          */
 253         bootmap_size = init_bootmem_node(
 254                         NODE_DATA(0),
 255                         memory_start >> PAGE_SHIFT, /* map goes here */
 256                         PAGE_OFFSET >> PAGE_SHIFT,      /* 0 on coldfire */
 257                         memory_end >> PAGE_SHIFT);
 258         /*
 259          * Free the usable memory, we have to make sure we do not free
 260          * the bootmem bitmap so we then reserve it after freeing it :-)
 261          */
 262         free_bootmem(memory_start, memory_end - memory_start);
 263         reserve_bootmem(memory_start, bootmap_size);
 264
 265         /*
 266          * Get kmalloc into gear.
 267          */
 268         paging_init();
 269 }
 270
 271 /*
 272  *      Get CPU information for use by the procfs.
 273  */
 274
 275 static int show_cpuinfo(struct seq_file *m, void *v)
 276 {
 277     char *cpu, *mmu, *fpu;
 278     u_long clockfreq;
 279
 280     cpu = CPU;
 281     mmu = "none";
 282     fpu = "none";
 283
 284 #ifdef CONFIG_COLDFIRE
 285     clockfreq = (loops_per_jiffy*HZ)*3;
 286 #else
 287     clockfreq = (loops_per_jiffy*HZ)*16;
 288 #endif
 289
 290     seq_printf(m, "CPU:\t\t%s\n"
 291                    "MMU:\t\t%s\n"
 292                    "FPU:\t\t%s\n"
 293                    "Clocking:\t%lu.%1luMHz\n"
 294                    "BogoMips:\t%lu.%02lu\n"
 295                    "Calibration:\t%lu loops\n",
 296                    cpu, mmu, fpu,
 297                    clockfreq/1000000,(clockfreq/100000)%10,
 298                    (loops_per_jiffy*HZ)/500000,((loops_per_jiffy*HZ)/5000)%100,
 299                    (loops_per_jiffy*HZ));
 300
 301         return 0;
 302 }
 303
 304 static void *c_start(struct seq_file *m, loff_t *pos)
 305 {
 306         return *pos < NR_CPUS ? ((void *) 0x12345678) : NULL;
 307 }
 308
 309 static void *c_next(struct seq_file *m, void *v, loff_t *pos)
 310 {
 311         ++*pos;
 312         return c_start(m, pos);
 313 }
 314
 315 static void c_stop(struct seq_file *m, void *v)
 316 {
 317 }
 318
 319 struct seq_operations cpuinfo_op = {
 320         .start  = c_start,
 321         .next   = c_next,
 322         .stop   = c_stop,
 323         .show   = show_cpuinfo,
 324 };
 325
 326 void arch_gettod(int *year, int *mon, int *day, int *hour,
 327                  int *min, int *sec)
 328 {
 329         if (mach_gettod)
 330                 mach_gettod(year, mon, day, hour, min, sec);
 331         else
 332                 *year = *mon = *day = *hour = *min = *sec = 0;
 333 }
 334