1 /* $Id: setup.c,v 1.8 2000/02/02 04:42:38 prumpf Exp $ 2 * 3 * Initial setup-routines for HP 9000 based hardware. 4 * 5 * Copyright (C) 1991, 1992, 1995 Linus Torvalds 6 * Modifications for PA-RISC (C) 1999 Helge Deller <deller@gmx.de> 7 * Modifications copyright 1999 SuSE GmbH (Philipp Rumpf) 8 * Modifications copyright 2000 Martin K. Petersen <mkp@mkp.net> 9 * Modifications copyright 2000 Philipp Rumpf <prumpf@tux.org> 10 * Modifications copyright 2001 Ryan Bradetich <rbradetich@uswest.net> 11 * 12 * Initial PA-RISC Version: 04-23-1999 by Helge Deller 13 * 14 * This program is free software; you can redistribute it and/or modify 15 * it under the terms of the GNU General Public License as published by 16 * the Free Software Foundation; either version 2, or (at your option) 17 * any later version. 18 * 19 * This program is distributed in the hope that it will be useful, 20 * but WITHOUT ANY WARRANTY; without even the implied warranty of 21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 22 * GNU General Public License for more details. 23 * 24 * You should have received a copy of the GNU General Public License 25 * along with this program; if not, write to the Free Software 26 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 27 * 28 */ 29 30 #include <linux/kernel.h> 31 #include <linux/initrd.h> 32 #include <linux/init.h> 33 #include <linux/console.h> 34 #include <linux/seq_file.h> 35 #define PCI_DEBUG 36 #include <linux/pci.h> 37 #undef PCI_DEBUG 38 #include <linux/proc_fs.h> 39 40 #include <asm/processor.h> 41 #include <asm/pdc.h> 42 #include <asm/led.h> 43 #include <asm/machdep.h> /* for pa7300lc_init() proto */ 44 #include <asm/pdc_chassis.h> 45 #include <asm/io.h> 46 #include <asm/setup.h> 47 48 char command_line[COMMAND_LINE_SIZE] __read_mostly; 49 50 /* Intended for ccio/sba/cpu statistics under /proc/bus/{runway|gsc} */ 51 struct proc_dir_entry * proc_runway_root __read_mostly = NULL; 52 struct proc_dir_entry * proc_gsc_root __read_mostly = NULL; 53 struct proc_dir_entry * proc_mckinley_root __read_mostly = NULL; 54 55 #if !defined(CONFIG_PA20) && (defined(CONFIG_IOMMU_CCIO) || defined(CONFIG_IOMMU_SBA)) 56 int parisc_bus_is_phys __read_mostly = 1; /* Assume no IOMMU is present */ 57 EXPORT_SYMBOL(parisc_bus_is_phys); 58 #endif 59 60 /* This sets the vmerge boundary and size, it's here because it has to 61 * be available on all platforms (zero means no-virtual merging) */ 62 unsigned long parisc_vmerge_boundary = 0; 63 unsigned long parisc_vmerge_max_size = 0; 64 65 void __init setup_cmdline(char **cmdline_p) 66 { 67 extern unsigned int boot_args[]; 68 69 /* Collect stuff passed in from the boot loader */ 70 71 /* boot_args[0] is free-mem start, boot_args[1] is ptr to command line */ 72 if (boot_args[0] < 64) { 73 /* called from hpux boot loader */ 74 saved_command_line[0] = '\0'; 75 } else { 76 strcpy(saved_command_line, (char *)__va(boot_args[1])); 77 78 #ifdef CONFIG_BLK_DEV_INITRD 79 if (boot_args[2] != 0) /* did palo pass us a ramdisk? */ 80 { 81 initrd_start = (unsigned long)__va(boot_args[2]); 82 initrd_end = (unsigned long)__va(boot_args[3]); 83 } 84 #endif 85 } 86 87 strcpy(command_line, saved_command_line); 88 *cmdline_p = command_line; 89 } 90 91 #ifdef CONFIG_PA11 92 void __init dma_ops_init(void) 93 { 94 switch (boot_cpu_data.cpu_type) { 95 case pcx: 96 /* 97 * We've got way too many dependencies on 1.1 semantics 98 * to support 1.0 boxes at this point. 99 */ 100 panic( "PA-RISC Linux currently only supports machines that conform to\n" 101 "the PA-RISC 1.1 or 2.0 architecture specification.\n"); 102 103 case pcxs: 104 case pcxt: 105 hppa_dma_ops = &pcx_dma_ops; 106 break; 107 case pcxl2: 108 pa7300lc_init(); 109 case pcxl: /* falls through */ 110 hppa_dma_ops = &pcxl_dma_ops; 111 break; 112 default: 113 break; 114 } 115 } 116 #endif 117 118 extern int init_per_cpu(int cpuid); 119 extern void collect_boot_cpu_data(void); 120 121 void __init setup_arch(char **cmdline_p) 122 { 123 #ifdef __LP64__ 124 extern int parisc_narrow_firmware; 125 #endif 126 127 init_per_cpu(smp_processor_id()); /* Set Modes & Enable FP */ 128 129 #ifdef __LP64__ 130 printk(KERN_INFO "The 64-bit Kernel has started...\n"); 131 #else 132 printk(KERN_INFO "The 32-bit Kernel has started...\n"); 133 #endif 134 135 pdc_console_init(); 136 137 #ifdef __LP64__ 138 if(parisc_narrow_firmware) { 139 printk(KERN_INFO "Kernel is using PDC in 32-bit mode.\n"); 140 } 141 #endif 142 setup_pdc(); 143 setup_cmdline(cmdline_p); 144 collect_boot_cpu_data(); 145 do_memory_inventory(); /* probe for physical memory */ 146 parisc_cache_init(); 147 paging_init(); 148 149 #ifdef CONFIG_CHASSIS_LCD_LED 150 /* initialize the LCD/LED after boot_cpu_data is available ! */ 151 led_init(); /* LCD/LED initialization */ 152 #endif 153 154 #ifdef CONFIG_PA11 155 dma_ops_init(); 156 #endif 157 158 #if defined(CONFIG_VT) && defined(CONFIG_DUMMY_CONSOLE) 159 conswitchp = &dummy_con; /* we use take_over_console() later ! */ 160 #endif 161 162 } 163 164 /* 165 * Display cpu info for all cpu's. 166 * for parisc this is in processor.c 167 */ 168 extern int show_cpuinfo (struct seq_file *m, void *v); 169 170 static void * 171 c_start (struct seq_file *m, loff_t *pos) 172 { 173 /* Looks like the caller will call repeatedly until we return 174 * 0, signaling EOF perhaps. This could be used to sequence 175 * through CPUs for example. Since we print all cpu info in our 176 * show_cpuinfo() disregarding 'pos' (which I assume is 'v' above) 177 * we only allow for one "position". */ 178 return ((long)*pos < 1) ? (void *)1 : NULL; 179 } 180 181 static void * 182 c_next (struct seq_file *m, void *v, loff_t *pos) 183 { 184 ++*pos; 185 return c_start(m, pos); 186 } 187 188 static void 189 c_stop (struct seq_file *m, void *v) 190 { 191 } 192 193 struct seq_operations cpuinfo_op = { 194 .start = c_start, 195 .next = c_next, 196 .stop = c_stop, 197 .show = show_cpuinfo 198 }; 199 200 static void __init parisc_proc_mkdir(void) 201 { 202 /* 203 ** Can't call proc_mkdir() until after proc_root_init() has been 204 ** called by start_kernel(). In other words, this code can't 205 ** live in arch/.../setup.c because start_parisc() calls 206 ** start_kernel(). 207 */ 208 switch (boot_cpu_data.cpu_type) { 209 case pcxl: 210 case pcxl2: 211 if (NULL == proc_gsc_root) 212 { 213 proc_gsc_root = proc_mkdir("bus/gsc", NULL); 214 } 215 break; 216 case pcxt_: 217 case pcxu: 218 case pcxu_: 219 case pcxw: 220 case pcxw_: 221 case pcxw2: 222 if (NULL == proc_runway_root) 223 { 224 proc_runway_root = proc_mkdir("bus/runway", NULL); 225 } 226 break; 227 case mako: 228 if (NULL == proc_mckinley_root) 229 { 230 proc_mckinley_root = proc_mkdir("bus/mckinley", NULL); 231 } 232 break; 233 default: 234 /* FIXME: this was added to prevent the compiler 235 * complaining about missing pcx, pcxs and pcxt 236 * I'm assuming they have neither gsc nor runway */ 237 break; 238 } 239 } 240 241 static struct resource central_bus = { 242 .name = "Central Bus", 243 .start = F_EXTEND(0xfff80000), 244 .end = F_EXTEND(0xfffaffff), 245 .flags = IORESOURCE_MEM, 246 }; 247 248 static struct resource local_broadcast = { 249 .name = "Local Broadcast", 250 .start = F_EXTEND(0xfffb0000), 251 .end = F_EXTEND(0xfffdffff), 252 .flags = IORESOURCE_MEM, 253 }; 254 255 static struct resource global_broadcast = { 256 .name = "Global Broadcast", 257 .start = F_EXTEND(0xfffe0000), 258 .end = F_EXTEND(0xffffffff), 259 .flags = IORESOURCE_MEM, 260 }; 261 262 static int __init parisc_init_resources(void) 263 { 264 int result; 265 266 result = request_resource(&iomem_resource, ¢ral_bus); 267 if (result < 0) { 268 printk(KERN_ERR 269 "%s: failed to claim %s address space!\n", 270 __FILE__, central_bus.name); 271 return result; 272 } 273 274 result = request_resource(&iomem_resource, &local_broadcast); 275 if (result < 0) { 276 printk(KERN_ERR 277 "%s: failed to claim %saddress space!\n", 278 __FILE__, local_broadcast.name); 279 return result; 280 } 281 282 result = request_resource(&iomem_resource, &global_broadcast); 283 if (result < 0) { 284 printk(KERN_ERR 285 "%s: failed to claim %s address space!\n", 286 __FILE__, global_broadcast.name); 287 return result; 288 } 289 290 return 0; 291 } 292 293 extern void gsc_init(void); 294 extern void processor_init(void); 295 extern void ccio_init(void); 296 extern void hppb_init(void); 297 extern void dino_init(void); 298 extern void iosapic_init(void); 299 extern void lba_init(void); 300 extern void sba_init(void); 301 extern void eisa_init(void); 302 303 static int __init parisc_init(void) 304 { 305 u32 osid = (OS_ID_LINUX << 16); 306 307 parisc_proc_mkdir(); 308 parisc_init_resources(); 309 do_device_inventory(); /* probe for hardware */ 310 311 parisc_pdc_chassis_init(); 312 313 /* set up a new led state on systems shipped LED State panel */ 314 pdc_chassis_send_status(PDC_CHASSIS_DIRECT_BSTART); 315 316 /* tell PDC we're Linux. Nevermind failure. */ 317 pdc_stable_write(0x40, &osid, sizeof(osid)); 318 319 processor_init(); 320 printk(KERN_INFO "CPU(s): %d x %s at %d.%06d MHz\n", 321 boot_cpu_data.cpu_count, 322 boot_cpu_data.cpu_name, 323 boot_cpu_data.cpu_hz / 1000000, 324 boot_cpu_data.cpu_hz % 1000000 ); 325 326 parisc_setup_cache_timing(); 327 328 /* These are in a non-obvious order, will fix when we have an iotree */ 329 #if defined(CONFIG_IOSAPIC) 330 iosapic_init(); 331 #endif 332 #if defined(CONFIG_IOMMU_SBA) 333 sba_init(); 334 #endif 335 #if defined(CONFIG_PCI_LBA) 336 lba_init(); 337 #endif 338 339 /* CCIO before any potential subdevices */ 340 #if defined(CONFIG_IOMMU_CCIO) 341 ccio_init(); 342 #endif 343 344 /* 345 * Need to register Asp & Wax before the EISA adapters for the IRQ 346 * regions. EISA must come before PCI to be sure it gets IRQ region 347 * 0. 348 */ 349 #if defined(CONFIG_GSC_LASI) || defined(CONFIG_GSC_WAX) 350 gsc_init(); 351 #endif 352 #ifdef CONFIG_EISA 353 eisa_init(); 354 #endif 355 356 #if defined(CONFIG_HPPB) 357 hppb_init(); 358 #endif 359 360 #if defined(CONFIG_GSC_DINO) 361 dino_init(); 362 #endif 363 364 #ifdef CONFIG_CHASSIS_LCD_LED 365 register_led_regions(); /* register LED port info in procfs */ 366 #endif 367 368 return 0; 369 } 370 371 arch_initcall(parisc_init); 372 373