1 /* 2 * Initial setup-routines for HP 9000 based hardware. 3 * 4 * Copyright (C) 1991, 1992, 1995 Linus Torvalds 5 * Modifications for PA-RISC (C) 1999 Helge Deller <[email protected]> 6 * Modifications copyright 1999 SuSE GmbH (Philipp Rumpf) 7 * Modifications copyright 2000 Martin K. Petersen <[email protected]> 8 * Modifications copyright 2000 Philipp Rumpf <[email protected]> 9 * Modifications copyright 2001 Ryan Bradetich <[email protected]> 10 * 11 * Initial PA-RISC Version: 04-23-1999 by Helge Deller 12 * 13 * This program is free software; you can redistribute it and/or modify 14 * it under the terms of the GNU General Public License as published by 15 * the Free Software Foundation; either version 2, or (at your option) 16 * any later version. 17 * 18 * This program is distributed in the hope that it will be useful, 19 * but WITHOUT ANY WARRANTY; without even the implied warranty of 20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 21 * GNU General Public License for more details. 22 * 23 * You should have received a copy of the GNU General Public License 24 * along with this program; if not, write to the Free Software 25 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 26 * 27 */ 28 29 #include <linux/kernel.h> 30 #include <linux/initrd.h> 31 #include <linux/init.h> 32 #include <linux/console.h> 33 #include <linux/seq_file.h> 34 #define PCI_DEBUG 35 #include <linux/pci.h> 36 #undef PCI_DEBUG 37 #include <linux/proc_fs.h> 38 #include <linux/export.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 #include <asm/unwind.h> 48 49 static char __initdata command_line[COMMAND_LINE_SIZE]; 50 51 /* Intended for ccio/sba/cpu statistics under /proc/bus/{runway|gsc} */ 52 struct proc_dir_entry * proc_runway_root __read_mostly = NULL; 53 struct proc_dir_entry * proc_gsc_root __read_mostly = NULL; 54 struct proc_dir_entry * proc_mckinley_root __read_mostly = NULL; 55 56 #if !defined(CONFIG_PA20) && (defined(CONFIG_IOMMU_CCIO) || defined(CONFIG_IOMMU_SBA)) 57 int parisc_bus_is_phys __read_mostly = 1; /* Assume no IOMMU is present */ 58 EXPORT_SYMBOL(parisc_bus_is_phys); 59 #endif 60 61 void __init setup_cmdline(char **cmdline_p) 62 { 63 extern unsigned int boot_args[]; 64 65 /* Collect stuff passed in from the boot loader */ 66 67 /* boot_args[0] is free-mem start, boot_args[1] is ptr to command line */ 68 if (boot_args[0] < 64) { 69 /* called from hpux boot loader */ 70 boot_command_line[0] = '\0'; 71 } else { 72 strcpy(boot_command_line, (char *)__va(boot_args[1])); 73 74 #ifdef CONFIG_BLK_DEV_INITRD 75 if (boot_args[2] != 0) /* did palo pass us a ramdisk? */ 76 { 77 initrd_start = (unsigned long)__va(boot_args[2]); 78 initrd_end = (unsigned long)__va(boot_args[3]); 79 } 80 #endif 81 } 82 83 strcpy(command_line, boot_command_line); 84 *cmdline_p = command_line; 85 } 86 87 #ifdef CONFIG_PA11 88 void __init dma_ops_init(void) 89 { 90 switch (boot_cpu_data.cpu_type) { 91 case pcx: 92 /* 93 * We've got way too many dependencies on 1.1 semantics 94 * to support 1.0 boxes at this point. 95 */ 96 panic( "PA-RISC Linux currently only supports machines that conform to\n" 97 "the PA-RISC 1.1 or 2.0 architecture specification.\n"); 98 99 case pcxs: 100 case pcxt: 101 hppa_dma_ops = &pcx_dma_ops; 102 break; 103 case pcxl2: 104 pa7300lc_init(); 105 case pcxl: /* falls through */ 106 hppa_dma_ops = &pcxl_dma_ops; 107 break; 108 default: 109 break; 110 } 111 } 112 #endif 113 114 extern int init_per_cpu(int cpuid); 115 extern void collect_boot_cpu_data(void); 116 117 void __init setup_arch(char **cmdline_p) 118 { 119 #ifdef CONFIG_64BIT 120 extern int parisc_narrow_firmware; 121 #endif 122 unwind_init(); 123 124 init_per_cpu(smp_processor_id()); /* Set Modes & Enable FP */ 125 126 #ifdef CONFIG_64BIT 127 printk(KERN_INFO "The 64-bit Kernel has started...\n"); 128 #else 129 printk(KERN_INFO "The 32-bit Kernel has started...\n"); 130 #endif 131 132 printk(KERN_INFO "Default page size is %dKB.\n", (int)(PAGE_SIZE / 1024)); 133 134 pdc_console_init(); 135 136 #ifdef CONFIG_64BIT 137 if(parisc_narrow_firmware) { 138 printk(KERN_INFO "Kernel is using PDC in 32-bit mode.\n"); 139 } 140 #endif 141 setup_pdc(); 142 setup_cmdline(cmdline_p); 143 collect_boot_cpu_data(); 144 do_memory_inventory(); /* probe for physical memory */ 145 parisc_cache_init(); 146 paging_init(); 147 148 #ifdef CONFIG_CHASSIS_LCD_LED 149 /* initialize the LCD/LED after boot_cpu_data is available ! */ 150 led_init(); /* LCD/LED initialization */ 151 #endif 152 153 #ifdef CONFIG_PA11 154 dma_ops_init(); 155 #endif 156 157 #if defined(CONFIG_VT) && defined(CONFIG_DUMMY_CONSOLE) 158 conswitchp = &dummy_con; /* we use take_over_console() later ! */ 159 #endif 160 161 } 162 163 /* 164 * Display CPU info for all CPUs. 165 * for parisc this is in processor.c 166 */ 167 extern int show_cpuinfo (struct seq_file *m, void *v); 168 169 static void * 170 c_start (struct seq_file *m, loff_t *pos) 171 { 172 /* Looks like the caller will call repeatedly until we return 173 * 0, signaling EOF perhaps. This could be used to sequence 174 * through CPUs for example. Since we print all cpu info in our 175 * show_cpuinfo() disregarding 'pos' (which I assume is 'v' above) 176 * we only allow for one "position". */ 177 return ((long)*pos < 1) ? (void *)1 : NULL; 178 } 179 180 static void * 181 c_next (struct seq_file *m, void *v, loff_t *pos) 182 { 183 ++*pos; 184 return c_start(m, pos); 185 } 186 187 static void 188 c_stop (struct seq_file *m, void *v) 189 { 190 } 191 192 const struct seq_operations cpuinfo_op = { 193 .start = c_start, 194 .next = c_next, 195 .stop = c_stop, 196 .show = show_cpuinfo 197 }; 198 199 static void __init parisc_proc_mkdir(void) 200 { 201 /* 202 ** Can't call proc_mkdir() until after proc_root_init() has been 203 ** called by start_kernel(). In other words, this code can't 204 ** live in arch/.../setup.c because start_parisc() calls 205 ** start_kernel(). 206 */ 207 switch (boot_cpu_data.cpu_type) { 208 case pcxl: 209 case pcxl2: 210 if (NULL == proc_gsc_root) 211 { 212 proc_gsc_root = proc_mkdir("bus/gsc", NULL); 213 } 214 break; 215 case pcxt_: 216 case pcxu: 217 case pcxu_: 218 case pcxw: 219 case pcxw_: 220 case pcxw2: 221 if (NULL == proc_runway_root) 222 { 223 proc_runway_root = proc_mkdir("bus/runway", NULL); 224 } 225 break; 226 case mako: 227 case mako2: 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 num_present_cpus(), 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 arch_initcall(parisc_init); 371 372 void start_parisc(void) 373 { 374 extern void start_kernel(void); 375 376 int ret, cpunum; 377 struct pdc_coproc_cfg coproc_cfg; 378 379 cpunum = smp_processor_id(); 380 381 set_firmware_width_unlocked(); 382 383 ret = pdc_coproc_cfg_unlocked(&coproc_cfg); 384 if (ret >= 0 && coproc_cfg.ccr_functional) { 385 mtctl(coproc_cfg.ccr_functional, 10); 386 387 per_cpu(cpu_data, cpunum).fp_rev = coproc_cfg.revision; 388 per_cpu(cpu_data, cpunum).fp_model = coproc_cfg.model; 389 390 asm volatile ("fstd %fr0,8(%sp)"); 391 } else { 392 panic("must have an fpu to boot linux"); 393 } 394 395 start_kernel(); 396 // not reached 397 } 398