1/* 2 * linux/arch/m68knommu/kernel/setup.c 3 * 4 * Copyright (C) 1999-2007 Greg Ungerer (gerg@snapgear.com) 5 * Copyright (C) 1998,1999 D. Jeff Dionne <jeff@uClinux.org> 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/fb.h> 24#include <linux/module.h> 25#include <linux/mm.h> 26#include <linux/console.h> 27#include <linux/errno.h> 28#include <linux/string.h> 29#include <linux/bootmem.h> 30#include <linux/seq_file.h> 31#include <linux/init.h> 32#include <linux/initrd.h> 33#include <linux/root_dev.h> 34 35#include <asm/setup.h> 36#include <asm/irq.h> 37#include <asm/machdep.h> 38#include <asm/pgtable.h> 39 40unsigned long memory_start; 41unsigned long memory_end; 42 43EXPORT_SYMBOL(memory_start); 44EXPORT_SYMBOL(memory_end); 45 46char __initdata command_line[COMMAND_LINE_SIZE]; 47 48/* machine dependent timer functions */ 49void (*mach_gettod)(int*, int*, int*, int*, int*, int*); 50int (*mach_set_clock_mmss)(unsigned long); 51 52/* machine dependent reboot functions */ 53void (*mach_reset)(void); 54void (*mach_halt)(void); 55void (*mach_power_off)(void); 56 57#ifdef CONFIG_M68000 58 #define CPU "MC68000" 59#endif 60#ifdef CONFIG_M68328 61 #define CPU "MC68328" 62#endif 63#ifdef CONFIG_M68EZ328 64 #define CPU "MC68EZ328" 65#endif 66#ifdef CONFIG_M68VZ328 67 #define CPU "MC68VZ328" 68#endif 69#ifdef CONFIG_M68360 70 #define CPU "MC68360" 71#endif 72#if defined(CONFIG_M5206) 73 #define CPU "COLDFIRE(m5206)" 74#endif 75#if defined(CONFIG_M5206e) 76 #define CPU "COLDFIRE(m5206e)" 77#endif 78#if defined(CONFIG_M520x) 79 #define CPU "COLDFIRE(m520x)" 80#endif 81#if defined(CONFIG_M523x) 82 #define CPU "COLDFIRE(m523x)" 83#endif 84#if defined(CONFIG_M5249) 85 #define CPU "COLDFIRE(m5249)" 86#endif 87#if defined(CONFIG_M5271) 88 #define CPU "COLDFIRE(m5270/5271)" 89#endif 90#if defined(CONFIG_M5272) 91 #define CPU "COLDFIRE(m5272)" 92#endif 93#if defined(CONFIG_M5275) 94 #define CPU "COLDFIRE(m5274/5275)" 95#endif 96#if defined(CONFIG_M528x) 97 #define CPU "COLDFIRE(m5280/5282)" 98#endif 99#if defined(CONFIG_M5307) 100 #define CPU "COLDFIRE(m5307)" 101#endif 102#if defined(CONFIG_M532x) 103 #define CPU "COLDFIRE(m532x)" 104#endif 105#if defined(CONFIG_M5407) 106 #define CPU "COLDFIRE(m5407)" 107#endif 108#ifndef CPU 109 #define CPU "UNKNOWN" 110#endif 111 112extern int _stext, _etext, _sdata, _edata, _sbss, _ebss, _end; 113extern int _ramstart, _ramend; 114 115#if defined(CONFIG_UBOOT) 116/* 117 * parse_uboot_commandline 118 * 119 * Copies u-boot commandline arguments and store them in the proper linux 120 * variables. 121 * 122 * Assumes: 123 * _init_sp global contains the address in the stack pointer when the 124 * kernel starts (see head.S::_start) 125 * 126 * U-Boot calling convention: 127 * (*kernel) (kbd, initrd_start, initrd_end, cmd_start, cmd_end); 128 * 129 * _init_sp can be parsed as such 130 * 131 * _init_sp+00 = u-boot cmd after jsr into kernel (skip) 132 * _init_sp+04 = &kernel board_info (residual data) 133 * _init_sp+08 = &initrd_start 134 * _init_sp+12 = &initrd_end 135 * _init_sp+16 = &cmd_start 136 * _init_sp+20 = &cmd_end 137 * 138 * This also assumes that the memory locations pointed to are still 139 * unmodified. U-boot places them near the end of external SDRAM. 140 * 141 * Argument(s): 142 * commandp = the linux commandline arg container to fill. 143 * size = the sizeof commandp. 144 * 145 * Returns: 146 */ 147void parse_uboot_commandline(char *commandp, int size) 148{ 149 extern unsigned long _init_sp; 150 unsigned long *sp; 151 unsigned long uboot_kbd; 152 unsigned long uboot_initrd_start, uboot_initrd_end; 153 unsigned long uboot_cmd_start, uboot_cmd_end; 154 155 156 sp = (unsigned long *)_init_sp; 157 uboot_kbd = sp[1]; 158 uboot_initrd_start = sp[2]; 159 uboot_initrd_end = sp[3]; 160 uboot_cmd_start = sp[4]; 161 uboot_cmd_end = sp[5]; 162 163 if (uboot_cmd_start && uboot_cmd_end) 164 strncpy(commandp, (const char *)uboot_cmd_start, size); 165#if defined(CONFIG_BLK_DEV_INITRD) 166 if (uboot_initrd_start && uboot_initrd_end && 167 (uboot_initrd_end > uboot_initrd_start)) { 168 initrd_start = uboot_initrd_start; 169 initrd_end = uboot_initrd_end; 170 ROOT_DEV = Root_RAM0; 171 printk(KERN_INFO "initrd at 0x%lx:0x%lx\n", 172 initrd_start, initrd_end); 173 } 174#endif /* if defined(CONFIG_BLK_DEV_INITRD) */ 175} 176#endif /* #if defined(CONFIG_UBOOT) */ 177 178void __init setup_arch(char **cmdline_p) 179{ 180 int bootmap_size; 181 182 memory_start = PAGE_ALIGN(_ramstart); 183 memory_end = _ramend; 184 185 init_mm.start_code = (unsigned long) &_stext; 186 init_mm.end_code = (unsigned long) &_etext; 187 init_mm.end_data = (unsigned long) &_edata; 188 init_mm.brk = (unsigned long) 0; 189 190 config_BSP(&command_line[0], sizeof(command_line)); 191 192#if defined(CONFIG_BOOTPARAM) 193 strncpy(&command_line[0], CONFIG_BOOTPARAM_STRING, sizeof(command_line)); 194 command_line[sizeof(command_line) - 1] = 0; 195#endif /* CONFIG_BOOTPARAM */ 196 197#if defined(CONFIG_UBOOT) 198 /* CONFIG_UBOOT and CONFIG_BOOTPARAM defined, concatenate cmdline */ 199 #if defined(CONFIG_BOOTPARAM) 200 /* Add the whitespace separator */ 201 command_line[strlen(CONFIG_BOOTPARAM_STRING)] = ' '; 202 /* Parse uboot command line into the rest of the buffer */ 203 parse_uboot_commandline( 204 &command_line[(strlen(CONFIG_BOOTPARAM_STRING)+1)], 205 (sizeof(command_line) - 206 (strlen(CONFIG_BOOTPARAM_STRING)+1))); 207 /* Only CONFIG_UBOOT defined, create cmdline */ 208 #else 209 parse_uboot_commandline(&command_line[0], sizeof(command_line)); 210 #endif /* CONFIG_BOOTPARAM */ 211 command_line[sizeof(command_line) - 1] = 0; 212#endif /* CONFIG_UBOOT */ 213 214 printk(KERN_INFO "\x0F\r\n\nuClinux/" CPU "\n"); 215 216#ifdef CONFIG_UCDIMM 217 printk(KERN_INFO "uCdimm by Lineo, Inc. <www.lineo.com>\n"); 218#endif 219#ifdef CONFIG_M68VZ328 220 printk(KERN_INFO "M68VZ328 support by Evan Stawnyczy <e@lineo.ca>\n"); 221#endif 222#ifdef CONFIG_COLDFIRE 223 printk(KERN_INFO "COLDFIRE port done by Greg Ungerer, gerg@snapgear.com\n"); 224#ifdef CONFIG_M5307 225 printk(KERN_INFO "Modified for M5307 by Dave Miller, dmiller@intellistor.com\n"); 226#endif 227#ifdef CONFIG_ELITE 228 printk(KERN_INFO "Modified for M5206eLITE by Rob Scott, rscott@mtrob.fdns.net\n"); 229#endif 230#endif 231 printk(KERN_INFO "Flat model support (C) 1998,1999 Kenneth Albanowski, D. Jeff Dionne\n"); 232 233#if defined(CONFIG_PILOT) && defined(CONFIG_M68328) 234 printk(KERN_INFO "TRG SuperPilot FLASH card support <info@trgnet.com>\n"); 235#endif 236#if defined(CONFIG_PILOT) && defined(CONFIG_M68EZ328) 237 printk(KERN_INFO "PalmV support by Lineo Inc. <jeff@uclinux.com>\n"); 238#endif 239#if defined(CONFIG_M68360) 240 printk(KERN_INFO "QUICC port done by SED Systems <hamilton@sedsystems.ca>,\n"); 241 printk(KERN_INFO "based on 2.0.38 port by Lineo Inc. <mleslie@lineo.com>.\n"); 242#endif 243#ifdef CONFIG_DRAGEN2 244 printk(KERN_INFO "DragonEngine II board support by Georges Menie\n"); 245#endif 246#ifdef CONFIG_M5235EVB 247 printk(KERN_INFO "Motorola M5235EVB support (C)2005 Syn-tech Systems, Inc. (Jate Sujjavanich)\n"); 248#endif 249 250 pr_debug("KERNEL -> TEXT=0x%06x-0x%06x DATA=0x%06x-0x%06x " 251 "BSS=0x%06x-0x%06x\n", (int) &_stext, (int) &_etext, 252 (int) &_sdata, (int) &_edata, 253 (int) &_sbss, (int) &_ebss); 254 pr_debug("MEMORY -> ROMFS=0x%06x-0x%06x MEM=0x%06x-0x%06x\n ", 255 (int) &_ebss, (int) memory_start, 256 (int) memory_start, (int) memory_end); 257 258 /* Keep a copy of command line */ 259 *cmdline_p = &command_line[0]; 260 memcpy(boot_command_line, command_line, COMMAND_LINE_SIZE); 261 boot_command_line[COMMAND_LINE_SIZE-1] = 0; 262 263#ifdef DEBUG 264 if (strlen(*cmdline_p)) 265 printk(KERN_DEBUG "Command line: '%s'\n", *cmdline_p); 266#endif 267 268#if defined(CONFIG_FRAMEBUFFER_CONSOLE) && defined(CONFIG_DUMMY_CONSOLE) 269 conswitchp = &dummy_con; 270#endif 271 272 /* 273 * Give all the memory to the bootmap allocator, tell it to put the 274 * boot mem_map at the start of memory. 275 */ 276 bootmap_size = init_bootmem_node( 277 NODE_DATA(0), 278 memory_start >> PAGE_SHIFT, /* map goes here */ 279 PAGE_OFFSET >> PAGE_SHIFT, /* 0 on coldfire */ 280 memory_end >> PAGE_SHIFT); 281 /* 282 * Free the usable memory, we have to make sure we do not free 283 * the bootmem bitmap so we then reserve it after freeing it :-) 284 */ 285 free_bootmem(memory_start, memory_end - memory_start); 286 reserve_bootmem(memory_start, bootmap_size, BOOTMEM_DEFAULT); 287 288#if defined(CONFIG_UBOOT) && defined(CONFIG_BLK_DEV_INITRD) 289 if ((initrd_start > 0) && (initrd_start < initrd_end) && 290 (initrd_end < memory_end)) 291 reserve_bootmem(initrd_start, initrd_end - initrd_start, 292 BOOTMEM_DEFAULT); 293#endif /* if defined(CONFIG_BLK_DEV_INITRD) */ 294 295 /* 296 * Get kmalloc into gear. 297 */ 298 paging_init(); 299} 300 301/* 302 * Get CPU information for use by the procfs. 303 */ 304static int show_cpuinfo(struct seq_file *m, void *v) 305{ 306 char *cpu, *mmu, *fpu; 307 u_long clockfreq; 308 309 cpu = CPU; 310 mmu = "none"; 311 fpu = "none"; 312 313#ifdef CONFIG_COLDFIRE 314 clockfreq = (loops_per_jiffy * HZ) * 3; 315#else 316 clockfreq = (loops_per_jiffy * HZ) * 16; 317#endif 318 319 seq_printf(m, "CPU:\t\t%s\n" 320 "MMU:\t\t%s\n" 321 "FPU:\t\t%s\n" 322 "Clocking:\t%lu.%1luMHz\n" 323 "BogoMips:\t%lu.%02lu\n" 324 "Calibration:\t%lu loops\n", 325 cpu, mmu, fpu, 326 clockfreq / 1000000, 327 (clockfreq / 100000) % 10, 328 (loops_per_jiffy * HZ) / 500000, 329 ((loops_per_jiffy * HZ) / 5000) % 100, 330 (loops_per_jiffy * HZ)); 331 332 return 0; 333} 334 335static void *c_start(struct seq_file *m, loff_t *pos) 336{ 337 return *pos < NR_CPUS ? ((void *) 0x12345678) : NULL; 338} 339 340static void *c_next(struct seq_file *m, void *v, loff_t *pos) 341{ 342 ++*pos; 343 return c_start(m, pos); 344} 345 346static void c_stop(struct seq_file *m, void *v) 347{ 348} 349 350const struct seq_operations cpuinfo_op = { 351 .start = c_start, 352 .next = c_next, 353 .stop = c_stop, 354 .show = show_cpuinfo, 355}; 356