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 #include <asm/sections.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 /* machine dependent timer functions */ 50 void (*mach_gettod)(int*, int*, int*, int*, int*, int*); 51 int (*mach_set_clock_mmss)(unsigned long); 52 53 /* machine dependent reboot functions */ 54 void (*mach_reset)(void); 55 void (*mach_halt)(void); 56 void (*mach_power_off)(void); 57 58 #ifdef CONFIG_M68328 59 #define CPU_NAME "MC68328" 60 #endif 61 #ifdef CONFIG_M68EZ328 62 #define CPU_NAME "MC68EZ328" 63 #endif 64 #ifdef CONFIG_M68VZ328 65 #define CPU_NAME "MC68VZ328" 66 #endif 67 #ifdef CONFIG_M68360 68 #define CPU_NAME "MC68360" 69 #endif 70 #ifndef CPU_NAME 71 #define CPU_NAME "UNKNOWN" 72 #endif 73 74 /* 75 * Different cores have different instruction execution timings. 76 * The old/traditional 68000 cores are basically all the same, at 16. 77 * The ColdFire cores vary a little, their values are defined in their 78 * headers. We default to the standard 68000 value here. 79 */ 80 #ifndef CPU_INSTR_PER_JIFFY 81 #define CPU_INSTR_PER_JIFFY 16 82 #endif 83 84 #if defined(CONFIG_UBOOT) 85 /* 86 * parse_uboot_commandline 87 * 88 * Copies u-boot commandline arguments and store them in the proper linux 89 * variables. 90 * 91 * Assumes: 92 * _init_sp global contains the address in the stack pointer when the 93 * kernel starts (see head.S::_start) 94 * 95 * U-Boot calling convention: 96 * (*kernel) (kbd, initrd_start, initrd_end, cmd_start, cmd_end); 97 * 98 * _init_sp can be parsed as such 99 * 100 * _init_sp+00 = u-boot cmd after jsr into kernel (skip) 101 * _init_sp+04 = &kernel board_info (residual data) 102 * _init_sp+08 = &initrd_start 103 * _init_sp+12 = &initrd_end 104 * _init_sp+16 = &cmd_start 105 * _init_sp+20 = &cmd_end 106 * 107 * This also assumes that the memory locations pointed to are still 108 * unmodified. U-boot places them near the end of external SDRAM. 109 * 110 * Argument(s): 111 * commandp = the linux commandline arg container to fill. 112 * size = the sizeof commandp. 113 * 114 * Returns: 115 */ 116 void parse_uboot_commandline(char *commandp, int size) 117 { 118 extern unsigned long _init_sp; 119 unsigned long *sp; 120 unsigned long uboot_kbd; 121 unsigned long uboot_initrd_start, uboot_initrd_end; 122 unsigned long uboot_cmd_start, uboot_cmd_end; 123 124 125 sp = (unsigned long *)_init_sp; 126 uboot_kbd = sp[1]; 127 uboot_initrd_start = sp[2]; 128 uboot_initrd_end = sp[3]; 129 uboot_cmd_start = sp[4]; 130 uboot_cmd_end = sp[5]; 131 132 if (uboot_cmd_start && uboot_cmd_end) 133 strncpy(commandp, (const char *)uboot_cmd_start, size); 134 #if defined(CONFIG_BLK_DEV_INITRD) 135 if (uboot_initrd_start && uboot_initrd_end && 136 (uboot_initrd_end > uboot_initrd_start)) { 137 initrd_start = uboot_initrd_start; 138 initrd_end = uboot_initrd_end; 139 ROOT_DEV = Root_RAM0; 140 printk(KERN_INFO "initrd at 0x%lx:0x%lx\n", 141 initrd_start, initrd_end); 142 } 143 #endif /* if defined(CONFIG_BLK_DEV_INITRD) */ 144 } 145 #endif /* #if defined(CONFIG_UBOOT) */ 146 147 void __init setup_arch(char **cmdline_p) 148 { 149 int bootmap_size; 150 151 memory_start = PAGE_ALIGN(_ramstart); 152 memory_end = _ramend; 153 154 init_mm.start_code = (unsigned long) &_stext; 155 init_mm.end_code = (unsigned long) &_etext; 156 init_mm.end_data = (unsigned long) &_edata; 157 init_mm.brk = (unsigned long) 0; 158 159 config_BSP(&command_line[0], sizeof(command_line)); 160 161 #if defined(CONFIG_BOOTPARAM) 162 strncpy(&command_line[0], CONFIG_BOOTPARAM_STRING, sizeof(command_line)); 163 command_line[sizeof(command_line) - 1] = 0; 164 #endif /* CONFIG_BOOTPARAM */ 165 166 #if defined(CONFIG_UBOOT) 167 /* CONFIG_UBOOT and CONFIG_BOOTPARAM defined, concatenate cmdline */ 168 #if defined(CONFIG_BOOTPARAM) 169 /* Add the whitespace separator */ 170 command_line[strlen(CONFIG_BOOTPARAM_STRING)] = ' '; 171 /* Parse uboot command line into the rest of the buffer */ 172 parse_uboot_commandline( 173 &command_line[(strlen(CONFIG_BOOTPARAM_STRING)+1)], 174 (sizeof(command_line) - 175 (strlen(CONFIG_BOOTPARAM_STRING)+1))); 176 /* Only CONFIG_UBOOT defined, create cmdline */ 177 #else 178 parse_uboot_commandline(&command_line[0], sizeof(command_line)); 179 #endif /* CONFIG_BOOTPARAM */ 180 command_line[sizeof(command_line) - 1] = 0; 181 #endif /* CONFIG_UBOOT */ 182 183 printk(KERN_INFO "\x0F\r\n\nuClinux/" CPU_NAME "\n"); 184 185 #ifdef CONFIG_UCDIMM 186 printk(KERN_INFO "uCdimm by Lineo, Inc. <www.lineo.com>\n"); 187 #endif 188 #ifdef CONFIG_M68VZ328 189 printk(KERN_INFO "M68VZ328 support by Evan Stawnyczy <e@lineo.ca>\n"); 190 #endif 191 #ifdef CONFIG_COLDFIRE 192 printk(KERN_INFO "COLDFIRE port done by Greg Ungerer, gerg@snapgear.com\n"); 193 #ifdef CONFIG_M5307 194 printk(KERN_INFO "Modified for M5307 by Dave Miller, dmiller@intellistor.com\n"); 195 #endif 196 #ifdef CONFIG_ELITE 197 printk(KERN_INFO "Modified for M5206eLITE by Rob Scott, rscott@mtrob.fdns.net\n"); 198 #endif 199 #endif 200 printk(KERN_INFO "Flat model support (C) 1998,1999 Kenneth Albanowski, D. Jeff Dionne\n"); 201 202 #if defined( CONFIG_PILOT ) && defined( CONFIG_M68328 ) 203 printk(KERN_INFO "TRG SuperPilot FLASH card support <info@trgnet.com>\n"); 204 #endif 205 #if defined( CONFIG_PILOT ) && defined( CONFIG_M68EZ328 ) 206 printk(KERN_INFO "PalmV support by Lineo Inc. <jeff@uclinux.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)\n"); 217 #endif 218 219 pr_debug("KERNEL -> TEXT=0x%06x-0x%06x DATA=0x%06x-0x%06x " 220 "BSS=0x%06x-0x%06x\n", (int) &_stext, (int) &_etext, 221 (int) &_sdata, (int) &_edata, 222 (int) &_sbss, (int) &_ebss); 223 pr_debug("MEMORY -> ROMFS=0x%06x-0x%06x MEM=0x%06x-0x%06x\n ", 224 (int) &_ebss, (int) memory_start, 225 (int) memory_start, (int) memory_end); 226 227 /* Keep a copy of command line */ 228 *cmdline_p = &command_line[0]; 229 memcpy(boot_command_line, command_line, COMMAND_LINE_SIZE); 230 boot_command_line[COMMAND_LINE_SIZE-1] = 0; 231 232 #if defined(CONFIG_FRAMEBUFFER_CONSOLE) && defined(CONFIG_DUMMY_CONSOLE) 233 conswitchp = &dummy_con; 234 #endif 235 236 /* 237 * Give all the memory to the bootmap allocator, tell it to put the 238 * boot mem_map at the start of memory. 239 */ 240 bootmap_size = init_bootmem_node( 241 NODE_DATA(0), 242 memory_start >> PAGE_SHIFT, /* map goes here */ 243 PAGE_OFFSET >> PAGE_SHIFT, /* 0 on coldfire */ 244 memory_end >> PAGE_SHIFT); 245 /* 246 * Free the usable memory, we have to make sure we do not free 247 * the bootmem bitmap so we then reserve it after freeing it :-) 248 */ 249 free_bootmem(memory_start, memory_end - memory_start); 250 reserve_bootmem(memory_start, bootmap_size, BOOTMEM_DEFAULT); 251 252 #if defined(CONFIG_UBOOT) && defined(CONFIG_BLK_DEV_INITRD) 253 if ((initrd_start > 0) && (initrd_start < initrd_end) && 254 (initrd_end < memory_end)) 255 reserve_bootmem(initrd_start, initrd_end - initrd_start, 256 BOOTMEM_DEFAULT); 257 #endif /* if defined(CONFIG_BLK_DEV_INITRD) */ 258 259 /* 260 * Get kmalloc into gear. 261 */ 262 paging_init(); 263 } 264 265 /* 266 * Get CPU information for use by the procfs. 267 */ 268 static int show_cpuinfo(struct seq_file *m, void *v) 269 { 270 char *cpu, *mmu, *fpu; 271 u_long clockfreq; 272 273 cpu = CPU_NAME; 274 mmu = "none"; 275 fpu = "none"; 276 clockfreq = (loops_per_jiffy * HZ) * CPU_INSTR_PER_JIFFY; 277 278 seq_printf(m, "CPU:\t\t%s\n" 279 "MMU:\t\t%s\n" 280 "FPU:\t\t%s\n" 281 "Clocking:\t%lu.%1luMHz\n" 282 "BogoMips:\t%lu.%02lu\n" 283 "Calibration:\t%lu loops\n", 284 cpu, mmu, fpu, 285 clockfreq / 1000000, 286 (clockfreq / 100000) % 10, 287 (loops_per_jiffy * HZ) / 500000, 288 ((loops_per_jiffy * HZ) / 5000) % 100, 289 (loops_per_jiffy * HZ)); 290 291 return 0; 292 } 293 294 static void *c_start(struct seq_file *m, loff_t *pos) 295 { 296 return *pos < NR_CPUS ? ((void *) 0x12345678) : NULL; 297 } 298 299 static void *c_next(struct seq_file *m, void *v, loff_t *pos) 300 { 301 ++*pos; 302 return c_start(m, pos); 303 } 304 305 static void c_stop(struct seq_file *m, void *v) 306 { 307 } 308 309 const struct seq_operations cpuinfo_op = { 310 .start = c_start, 311 .next = c_next, 312 .stop = c_stop, 313 .show = show_cpuinfo, 314 }; 315 316