Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | * Copyright (C) 1995 Linus Torvalds |
| 3 | * Adapted from 'alpha' version by Gary Thomas |
| 4 | * Modified by Cort Dougan (cort@cs.nmt.edu) |
| 5 | * |
| 6 | * Support for PReP (Motorola MTX/MVME) |
| 7 | * by Troy Benjegerdes (hozer@drgw.net) |
| 8 | */ |
| 9 | |
| 10 | /* |
| 11 | * bootup setup stuff.. |
| 12 | */ |
| 13 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 14 | #include <linux/delay.h> |
| 15 | #include <linux/module.h> |
| 16 | #include <linux/errno.h> |
| 17 | #include <linux/sched.h> |
| 18 | #include <linux/kernel.h> |
| 19 | #include <linux/mm.h> |
| 20 | #include <linux/stddef.h> |
| 21 | #include <linux/unistd.h> |
| 22 | #include <linux/ptrace.h> |
| 23 | #include <linux/slab.h> |
| 24 | #include <linux/user.h> |
| 25 | #include <linux/a.out.h> |
Jon Smirl | 894673e | 2006-07-10 04:44:13 -0700 | [diff] [blame] | 26 | #include <linux/screen_info.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 27 | #include <linux/major.h> |
| 28 | #include <linux/interrupt.h> |
| 29 | #include <linux/reboot.h> |
| 30 | #include <linux/init.h> |
| 31 | #include <linux/initrd.h> |
| 32 | #include <linux/ioport.h> |
| 33 | #include <linux/console.h> |
| 34 | #include <linux/timex.h> |
| 35 | #include <linux/pci.h> |
| 36 | #include <linux/ide.h> |
| 37 | #include <linux/seq_file.h> |
| 38 | #include <linux/root_dev.h> |
| 39 | |
| 40 | #include <asm/sections.h> |
| 41 | #include <asm/mmu.h> |
| 42 | #include <asm/processor.h> |
| 43 | #include <asm/residual.h> |
| 44 | #include <asm/io.h> |
| 45 | #include <asm/pgtable.h> |
| 46 | #include <asm/cache.h> |
| 47 | #include <asm/dma.h> |
| 48 | #include <asm/machdep.h> |
| 49 | #include <asm/mc146818rtc.h> |
| 50 | #include <asm/mk48t59.h> |
| 51 | #include <asm/prep_nvram.h> |
| 52 | #include <asm/raven.h> |
| 53 | #include <asm/vga.h> |
| 54 | #include <asm/time.h> |
| 55 | #include <asm/mpc10x.h> |
| 56 | #include <asm/i8259.h> |
| 57 | #include <asm/open_pic.h> |
| 58 | #include <asm/pci-bridge.h> |
| 59 | #include <asm/todc.h> |
| 60 | |
David Gibson | 26ef5c0 | 2005-11-10 11:50:16 +1100 | [diff] [blame] | 61 | /* prep registers for L2 */ |
| 62 | #define CACHECRBA 0x80000823 /* Cache configuration register address */ |
| 63 | #define L2CACHE_MASK 0x03 /* Mask for 2 L2 Cache bits */ |
| 64 | #define L2CACHE_512KB 0x00 /* 512KB */ |
| 65 | #define L2CACHE_256KB 0x01 /* 256KB */ |
| 66 | #define L2CACHE_1MB 0x02 /* 1MB */ |
| 67 | #define L2CACHE_NONE 0x03 /* NONE */ |
| 68 | #define L2CACHE_PARITY 0x08 /* Mask for L2 Cache Parity Protected bit */ |
| 69 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | TODC_ALLOC(); |
| 71 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | extern unsigned char prep_nvram_read_val(int addr); |
| 73 | extern void prep_nvram_write_val(int addr, |
| 74 | unsigned char val); |
| 75 | extern unsigned char rs_nvram_read_val(int addr); |
| 76 | extern void rs_nvram_write_val(int addr, |
| 77 | unsigned char val); |
| 78 | extern void ibm_prep_init(void); |
| 79 | |
| 80 | extern void prep_find_bridges(void); |
| 81 | |
| 82 | int _prep_type; |
| 83 | |
| 84 | extern void prep_residual_setup_pci(char *irq_edge_mask_lo, char *irq_edge_mask_hi); |
| 85 | extern void prep_sandalfoot_setup_pci(char *irq_edge_mask_lo, char *irq_edge_mask_hi); |
| 86 | extern void prep_thinkpad_setup_pci(char *irq_edge_mask_lo, char *irq_edge_mask_hi); |
| 87 | extern void prep_carolina_setup_pci(char *irq_edge_mask_lo, char *irq_edge_mask_hi); |
| 88 | extern void prep_tiger1_setup_pci(char *irq_edge_mask_lo, char *irq_edge_mask_hi); |
| 89 | |
| 90 | |
| 91 | #define cached_21 (((char *)(ppc_cached_irq_mask))[3]) |
| 92 | #define cached_A1 (((char *)(ppc_cached_irq_mask))[2]) |
| 93 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 94 | #ifdef CONFIG_SOUND_CS4232 |
| 95 | long ppc_cs4232_dma, ppc_cs4232_dma2; |
| 96 | #endif |
| 97 | |
| 98 | extern PTE *Hash, *Hash_end; |
| 99 | extern unsigned long Hash_size, Hash_mask; |
| 100 | extern int probingmem; |
| 101 | extern unsigned long loops_per_jiffy; |
| 102 | |
| 103 | #ifdef CONFIG_SOUND_CS4232 |
| 104 | EXPORT_SYMBOL(ppc_cs4232_dma); |
| 105 | EXPORT_SYMBOL(ppc_cs4232_dma2); |
| 106 | #endif |
| 107 | |
| 108 | /* useful ISA ports */ |
| 109 | #define PREP_SYSCTL 0x81c |
| 110 | /* present in the IBM reference design; possibly identical in Mot boxes: */ |
| 111 | #define PREP_IBM_SIMM_ID 0x803 /* SIMM size: 32 or 8 MiB */ |
| 112 | #define PREP_IBM_SIMM_PRESENCE 0x804 |
| 113 | #define PREP_IBM_EQUIPMENT 0x80c |
| 114 | #define PREP_IBM_L2INFO 0x80d |
| 115 | #define PREP_IBM_PM1 0x82a /* power management register 1 */ |
| 116 | #define PREP_IBM_PLANAR 0x852 /* planar ID - identifies the motherboard */ |
| 117 | #define PREP_IBM_DISP 0x8c0 /* 4-digit LED display */ |
| 118 | |
| 119 | /* Equipment Present Register masks: */ |
| 120 | #define PREP_IBM_EQUIPMENT_RESERVED 0x80 |
| 121 | #define PREP_IBM_EQUIPMENT_SCSIFUSE 0x40 |
| 122 | #define PREP_IBM_EQUIPMENT_L2_COPYBACK 0x08 |
| 123 | #define PREP_IBM_EQUIPMENT_L2_256 0x04 |
| 124 | #define PREP_IBM_EQUIPMENT_CPU 0x02 |
| 125 | #define PREP_IBM_EQUIPMENT_L2 0x01 |
| 126 | |
| 127 | /* planar ID values: */ |
| 128 | /* Sandalfoot/Sandalbow (6015/7020) */ |
| 129 | #define PREP_IBM_SANDALFOOT 0xfc |
| 130 | /* Woodfield, Thinkpad 850/860 (6042/7249) */ |
| 131 | #define PREP_IBM_THINKPAD 0xff /* planar ID unimplemented */ |
| 132 | /* PowerSeries 830/850 (6050/6070) */ |
| 133 | #define PREP_IBM_CAROLINA_IDE_0 0xf0 |
| 134 | #define PREP_IBM_CAROLINA_IDE_1 0xf1 |
| 135 | #define PREP_IBM_CAROLINA_IDE_2 0xf2 |
| 136 | #define PREP_IBM_CAROLINA_IDE_3 0xf3 |
| 137 | /* 7248-43P */ |
| 138 | #define PREP_IBM_CAROLINA_SCSI_0 0xf4 |
| 139 | #define PREP_IBM_CAROLINA_SCSI_1 0xf5 |
| 140 | #define PREP_IBM_CAROLINA_SCSI_2 0xf6 |
| 141 | #define PREP_IBM_CAROLINA_SCSI_3 0xf7 /* missing from Carolina Tech Spec */ |
| 142 | /* Tiger1 (7043-140) */ |
| 143 | #define PREP_IBM_TIGER1_133 0xd1 |
| 144 | #define PREP_IBM_TIGER1_166 0xd2 |
| 145 | #define PREP_IBM_TIGER1_180 0xd3 |
| 146 | #define PREP_IBM_TIGER1_xxx 0xd4 /* unknown, but probably exists */ |
| 147 | #define PREP_IBM_TIGER1_333 0xd5 /* missing from Tiger Tech Spec */ |
| 148 | |
| 149 | /* setup_ibm_pci: |
| 150 | * set Motherboard_map_name, Motherboard_map, Motherboard_routes. |
| 151 | * return 8259 edge/level masks. |
| 152 | */ |
| 153 | void (*setup_ibm_pci)(char *irq_lo, char *irq_hi); |
| 154 | |
| 155 | extern char *Motherboard_map_name; /* for use in *_cpuinfo */ |
| 156 | |
| 157 | /* |
| 158 | * As found in the PReP reference implementation. |
| 159 | * Used by Thinkpad, Sandalfoot (6015/7020), and all Motorola PReP. |
| 160 | */ |
| 161 | static void __init |
| 162 | prep_gen_enable_l2(void) |
| 163 | { |
| 164 | outb(inb(PREP_SYSCTL) | 0x3, PREP_SYSCTL); |
| 165 | } |
| 166 | |
| 167 | /* Used by Carolina and Tiger1 */ |
| 168 | static void __init |
| 169 | prep_carolina_enable_l2(void) |
| 170 | { |
| 171 | outb(inb(PREP_SYSCTL) | 0xc0, PREP_SYSCTL); |
| 172 | } |
| 173 | |
| 174 | /* cpuinfo code common to all IBM PReP */ |
Jon Loeliger | f495a8b | 2005-09-17 10:35:08 -0500 | [diff] [blame] | 175 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | prep_ibm_cpuinfo(struct seq_file *m) |
| 177 | { |
| 178 | unsigned int equip_reg = inb(PREP_IBM_EQUIPMENT); |
| 179 | |
| 180 | seq_printf(m, "machine\t\t: PReP %s\n", Motherboard_map_name); |
| 181 | |
| 182 | seq_printf(m, "upgrade cpu\t: "); |
| 183 | if (equip_reg & PREP_IBM_EQUIPMENT_CPU) { |
| 184 | seq_printf(m, "not "); |
| 185 | } |
| 186 | seq_printf(m, "present\n"); |
| 187 | |
| 188 | /* print info about the SCSI fuse */ |
| 189 | seq_printf(m, "scsi fuse\t: "); |
| 190 | if (equip_reg & PREP_IBM_EQUIPMENT_SCSIFUSE) |
| 191 | seq_printf(m, "ok"); |
| 192 | else |
| 193 | seq_printf(m, "bad"); |
| 194 | seq_printf(m, "\n"); |
| 195 | |
| 196 | /* print info about SIMMs */ |
| 197 | if (have_residual_data) { |
| 198 | int i; |
| 199 | seq_printf(m, "simms\t\t: "); |
| 200 | for (i = 0; (res->ActualNumMemories) && (i < MAX_MEMS); i++) { |
| 201 | if (res->Memories[i].SIMMSize != 0) |
| 202 | seq_printf(m, "%d:%ldMiB ", i, |
| 203 | (res->Memories[i].SIMMSize > 1024) ? |
| 204 | res->Memories[i].SIMMSize>>20 : |
| 205 | res->Memories[i].SIMMSize); |
| 206 | } |
| 207 | seq_printf(m, "\n"); |
| 208 | } |
| 209 | } |
| 210 | |
Jon Loeliger | f495a8b | 2005-09-17 10:35:08 -0500 | [diff] [blame] | 211 | static int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 212 | prep_gen_cpuinfo(struct seq_file *m) |
| 213 | { |
| 214 | prep_ibm_cpuinfo(m); |
| 215 | return 0; |
| 216 | } |
| 217 | |
Jon Loeliger | f495a8b | 2005-09-17 10:35:08 -0500 | [diff] [blame] | 218 | static int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 219 | prep_sandalfoot_cpuinfo(struct seq_file *m) |
| 220 | { |
| 221 | unsigned int equip_reg = inb(PREP_IBM_EQUIPMENT); |
| 222 | |
| 223 | prep_ibm_cpuinfo(m); |
| 224 | |
| 225 | /* report amount and type of L2 cache present */ |
| 226 | seq_printf(m, "L2 cache\t: "); |
| 227 | if (equip_reg & PREP_IBM_EQUIPMENT_L2) { |
| 228 | seq_printf(m, "not present"); |
| 229 | } else { |
| 230 | if (equip_reg & PREP_IBM_EQUIPMENT_L2_256) |
| 231 | seq_printf(m, "256KiB"); |
| 232 | else |
| 233 | seq_printf(m, "unknown size"); |
| 234 | |
| 235 | if (equip_reg & PREP_IBM_EQUIPMENT_L2_COPYBACK) |
| 236 | seq_printf(m, ", copy-back"); |
| 237 | else |
| 238 | seq_printf(m, ", write-through"); |
| 239 | } |
| 240 | seq_printf(m, "\n"); |
| 241 | |
| 242 | return 0; |
| 243 | } |
| 244 | |
Jon Loeliger | f495a8b | 2005-09-17 10:35:08 -0500 | [diff] [blame] | 245 | static int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 246 | prep_thinkpad_cpuinfo(struct seq_file *m) |
| 247 | { |
| 248 | unsigned int equip_reg = inb(PREP_IBM_EQUIPMENT); |
| 249 | char *cpubus_speed, *pci_speed; |
| 250 | |
| 251 | prep_ibm_cpuinfo(m); |
| 252 | |
| 253 | /* report amount and type of L2 cache present */ |
| 254 | seq_printf(m, "l2 cache\t: "); |
| 255 | if ((equip_reg & 0x1) == 0) { |
| 256 | switch ((equip_reg & 0xc) >> 2) { |
| 257 | case 0x0: |
| 258 | seq_printf(m, "128KiB look-aside 2-way write-through\n"); |
| 259 | break; |
| 260 | case 0x1: |
| 261 | seq_printf(m, "512KiB look-aside direct-mapped write-back\n"); |
| 262 | break; |
| 263 | case 0x2: |
| 264 | seq_printf(m, "256KiB look-aside 2-way write-through\n"); |
| 265 | break; |
| 266 | case 0x3: |
| 267 | seq_printf(m, "256KiB look-aside direct-mapped write-back\n"); |
| 268 | break; |
| 269 | } |
| 270 | } else { |
| 271 | seq_printf(m, "not present\n"); |
| 272 | } |
| 273 | |
| 274 | /* report bus speeds because we can */ |
| 275 | if ((equip_reg & 0x80) == 0) { |
| 276 | switch ((equip_reg & 0x30) >> 4) { |
| 277 | case 0x1: |
| 278 | cpubus_speed = "50"; |
| 279 | pci_speed = "25"; |
| 280 | break; |
| 281 | case 0x3: |
| 282 | cpubus_speed = "66"; |
| 283 | pci_speed = "33"; |
| 284 | break; |
| 285 | default: |
| 286 | cpubus_speed = "unknown"; |
| 287 | pci_speed = "unknown"; |
| 288 | break; |
| 289 | } |
| 290 | } else { |
| 291 | switch ((equip_reg & 0x30) >> 4) { |
| 292 | case 0x1: |
| 293 | cpubus_speed = "25"; |
| 294 | pci_speed = "25"; |
| 295 | break; |
| 296 | case 0x2: |
| 297 | cpubus_speed = "60"; |
| 298 | pci_speed = "30"; |
| 299 | break; |
| 300 | case 0x3: |
| 301 | cpubus_speed = "33"; |
| 302 | pci_speed = "33"; |
| 303 | break; |
| 304 | default: |
| 305 | cpubus_speed = "unknown"; |
| 306 | pci_speed = "unknown"; |
| 307 | break; |
| 308 | } |
| 309 | } |
| 310 | seq_printf(m, "60x bus\t\t: %sMHz\n", cpubus_speed); |
| 311 | seq_printf(m, "pci bus\t\t: %sMHz\n", pci_speed); |
| 312 | |
| 313 | return 0; |
| 314 | } |
| 315 | |
Jon Loeliger | f495a8b | 2005-09-17 10:35:08 -0500 | [diff] [blame] | 316 | static int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 317 | prep_carolina_cpuinfo(struct seq_file *m) |
| 318 | { |
| 319 | unsigned int equip_reg = inb(PREP_IBM_EQUIPMENT); |
| 320 | |
| 321 | prep_ibm_cpuinfo(m); |
| 322 | |
| 323 | /* report amount and type of L2 cache present */ |
| 324 | seq_printf(m, "l2 cache\t: "); |
| 325 | if ((equip_reg & 0x1) == 0) { |
| 326 | unsigned int l2_reg = inb(PREP_IBM_L2INFO); |
| 327 | |
| 328 | /* L2 size */ |
| 329 | if ((l2_reg & 0x60) == 0) |
| 330 | seq_printf(m, "256KiB"); |
| 331 | else if ((l2_reg & 0x60) == 0x20) |
| 332 | seq_printf(m, "512KiB"); |
| 333 | else |
| 334 | seq_printf(m, "unknown size"); |
| 335 | |
| 336 | /* L2 type */ |
| 337 | if ((l2_reg & 0x3) == 0) |
| 338 | seq_printf(m, ", async"); |
| 339 | else if ((l2_reg & 0x3) == 1) |
| 340 | seq_printf(m, ", sync"); |
| 341 | else |
| 342 | seq_printf(m, ", unknown type"); |
| 343 | |
| 344 | seq_printf(m, "\n"); |
| 345 | } else { |
| 346 | seq_printf(m, "not present\n"); |
| 347 | } |
| 348 | |
| 349 | return 0; |
| 350 | } |
| 351 | |
Jon Loeliger | f495a8b | 2005-09-17 10:35:08 -0500 | [diff] [blame] | 352 | static int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 353 | prep_tiger1_cpuinfo(struct seq_file *m) |
| 354 | { |
| 355 | unsigned int l2_reg = inb(PREP_IBM_L2INFO); |
| 356 | |
| 357 | prep_ibm_cpuinfo(m); |
| 358 | |
| 359 | /* report amount and type of L2 cache present */ |
| 360 | seq_printf(m, "l2 cache\t: "); |
| 361 | if ((l2_reg & 0xf) == 0xf) { |
| 362 | seq_printf(m, "not present\n"); |
| 363 | } else { |
| 364 | if (l2_reg & 0x8) |
| 365 | seq_printf(m, "async, "); |
| 366 | else |
| 367 | seq_printf(m, "sync burst, "); |
| 368 | |
| 369 | if (l2_reg & 0x4) |
| 370 | seq_printf(m, "parity, "); |
| 371 | else |
| 372 | seq_printf(m, "no parity, "); |
| 373 | |
| 374 | switch (l2_reg & 0x3) { |
| 375 | case 0x0: |
| 376 | seq_printf(m, "256KiB\n"); |
| 377 | break; |
| 378 | case 0x1: |
| 379 | seq_printf(m, "512KiB\n"); |
| 380 | break; |
| 381 | case 0x2: |
| 382 | seq_printf(m, "1MiB\n"); |
| 383 | break; |
| 384 | default: |
| 385 | seq_printf(m, "unknown size\n"); |
| 386 | break; |
| 387 | } |
| 388 | } |
| 389 | |
| 390 | return 0; |
| 391 | } |
| 392 | |
| 393 | |
| 394 | /* Used by all Motorola PReP */ |
Jon Loeliger | f495a8b | 2005-09-17 10:35:08 -0500 | [diff] [blame] | 395 | static int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 396 | prep_mot_cpuinfo(struct seq_file *m) |
| 397 | { |
| 398 | unsigned int cachew = *((unsigned char *)CACHECRBA); |
| 399 | |
| 400 | seq_printf(m, "machine\t\t: PReP %s\n", Motherboard_map_name); |
| 401 | |
| 402 | /* report amount and type of L2 cache present */ |
| 403 | seq_printf(m, "l2 cache\t: "); |
| 404 | switch (cachew & L2CACHE_MASK) { |
| 405 | case L2CACHE_512KB: |
| 406 | seq_printf(m, "512KiB"); |
| 407 | break; |
| 408 | case L2CACHE_256KB: |
| 409 | seq_printf(m, "256KiB"); |
| 410 | break; |
| 411 | case L2CACHE_1MB: |
| 412 | seq_printf(m, "1MiB"); |
| 413 | break; |
| 414 | case L2CACHE_NONE: |
| 415 | seq_printf(m, "none\n"); |
| 416 | goto no_l2; |
| 417 | break; |
| 418 | default: |
| 419 | seq_printf(m, "%x\n", cachew); |
| 420 | } |
| 421 | |
| 422 | seq_printf(m, ", parity %s", |
| 423 | (cachew & L2CACHE_PARITY)? "enabled" : "disabled"); |
| 424 | |
| 425 | seq_printf(m, " SRAM:"); |
| 426 | |
| 427 | switch ( ((cachew & 0xf0) >> 4) & ~(0x3) ) { |
| 428 | case 1: seq_printf(m, "synchronous, parity, flow-through\n"); |
| 429 | break; |
| 430 | case 2: seq_printf(m, "asynchronous, no parity\n"); |
| 431 | break; |
| 432 | case 3: seq_printf(m, "asynchronous, parity\n"); |
| 433 | break; |
| 434 | default:seq_printf(m, "synchronous, pipelined, no parity\n"); |
| 435 | break; |
| 436 | } |
| 437 | |
| 438 | no_l2: |
| 439 | /* print info about SIMMs */ |
| 440 | if (have_residual_data) { |
| 441 | int i; |
| 442 | seq_printf(m, "simms\t\t: "); |
| 443 | for (i = 0; (res->ActualNumMemories) && (i < MAX_MEMS); i++) { |
| 444 | if (res->Memories[i].SIMMSize != 0) |
| 445 | seq_printf(m, "%d:%ldM ", i, |
| 446 | (res->Memories[i].SIMMSize > 1024) ? |
| 447 | res->Memories[i].SIMMSize>>20 : |
| 448 | res->Memories[i].SIMMSize); |
| 449 | } |
| 450 | seq_printf(m, "\n"); |
| 451 | } |
| 452 | |
| 453 | return 0; |
| 454 | } |
| 455 | |
Jon Loeliger | f495a8b | 2005-09-17 10:35:08 -0500 | [diff] [blame] | 456 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 457 | prep_restart(char *cmd) |
| 458 | { |
| 459 | #define PREP_SP92 0x92 /* Special Port 92 */ |
| 460 | local_irq_disable(); /* no interrupts */ |
| 461 | |
| 462 | /* set exception prefix high - to the prom */ |
| 463 | _nmask_and_or_msr(0, MSR_IP); |
| 464 | |
| 465 | /* make sure bit 0 (reset) is a 0 */ |
| 466 | outb( inb(PREP_SP92) & ~1L , PREP_SP92); |
| 467 | /* signal a reset to system control port A - soft reset */ |
| 468 | outb( inb(PREP_SP92) | 1 , PREP_SP92); |
| 469 | |
| 470 | while ( 1 ) ; |
| 471 | /* not reached */ |
| 472 | #undef PREP_SP92 |
| 473 | } |
| 474 | |
Jon Loeliger | f495a8b | 2005-09-17 10:35:08 -0500 | [diff] [blame] | 475 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 476 | prep_halt(void) |
| 477 | { |
| 478 | local_irq_disable(); /* no interrupts */ |
| 479 | |
| 480 | /* set exception prefix high - to the prom */ |
| 481 | _nmask_and_or_msr(0, MSR_IP); |
| 482 | |
| 483 | while ( 1 ) ; |
| 484 | /* not reached */ |
| 485 | } |
| 486 | |
| 487 | /* Carrera is the power manager in the Thinkpads. Unfortunately not much is |
| 488 | * known about it, so we can't power down. |
| 489 | */ |
Jon Loeliger | f495a8b | 2005-09-17 10:35:08 -0500 | [diff] [blame] | 490 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 491 | prep_carrera_poweroff(void) |
| 492 | { |
| 493 | prep_halt(); |
| 494 | } |
| 495 | |
| 496 | /* |
| 497 | * On most IBM PReP's, power management is handled by a Signetics 87c750 |
| 498 | * behind the Utah component on the ISA bus. To access the 750 you must write |
| 499 | * a series of nibbles to port 0x82a (decoded by the Utah). This is described |
| 500 | * somewhat in the IBM Carolina Technical Specification. |
| 501 | * -Hollis |
| 502 | */ |
Jon Loeliger | f495a8b | 2005-09-17 10:35:08 -0500 | [diff] [blame] | 503 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 504 | utah_sig87c750_setbit(unsigned int bytenum, unsigned int bitnum, int value) |
| 505 | { |
| 506 | /* |
| 507 | * byte1: 0 0 0 1 0 d a5 a4 |
| 508 | * byte2: 0 0 0 1 a3 a2 a1 a0 |
| 509 | * |
| 510 | * d = the bit's value, enabled or disabled |
| 511 | * (a5 a4 a3) = the byte number, minus 20 |
| 512 | * (a2 a1 a0) = the bit number |
| 513 | * |
| 514 | * example: set the 5th bit of byte 21 (21.5) |
| 515 | * a5 a4 a3 = 001 (byte 1) |
| 516 | * a2 a1 a0 = 101 (bit 5) |
| 517 | * |
| 518 | * byte1 = 0001 0100 (0x14) |
| 519 | * byte2 = 0001 1101 (0x1d) |
| 520 | */ |
| 521 | unsigned char byte1=0x10, byte2=0x10; |
| 522 | |
| 523 | /* the 750's '20.0' is accessed as '0.0' through Utah (which adds 20) */ |
| 524 | bytenum -= 20; |
| 525 | |
| 526 | byte1 |= (!!value) << 2; /* set d */ |
| 527 | byte1 |= (bytenum >> 1) & 0x3; /* set a5, a4 */ |
| 528 | |
| 529 | byte2 |= (bytenum & 0x1) << 3; /* set a3 */ |
| 530 | byte2 |= bitnum & 0x7; /* set a2, a1, a0 */ |
| 531 | |
| 532 | outb(byte1, PREP_IBM_PM1); /* first nibble */ |
| 533 | mb(); |
| 534 | udelay(100); /* important: let controller recover */ |
| 535 | |
| 536 | outb(byte2, PREP_IBM_PM1); /* second nibble */ |
| 537 | mb(); |
| 538 | udelay(100); /* important: let controller recover */ |
| 539 | } |
| 540 | |
Jon Loeliger | f495a8b | 2005-09-17 10:35:08 -0500 | [diff] [blame] | 541 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 542 | prep_sig750_poweroff(void) |
| 543 | { |
| 544 | /* tweak the power manager found in most IBM PRePs (except Thinkpads) */ |
| 545 | |
| 546 | local_irq_disable(); |
| 547 | /* set exception prefix high - to the prom */ |
| 548 | _nmask_and_or_msr(0, MSR_IP); |
| 549 | |
| 550 | utah_sig87c750_setbit(21, 5, 1); /* set bit 21.5, "PMEXEC_OFF" */ |
| 551 | |
| 552 | while (1) ; |
| 553 | /* not reached */ |
| 554 | } |
| 555 | |
Jon Loeliger | f495a8b | 2005-09-17 10:35:08 -0500 | [diff] [blame] | 556 | static int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 557 | prep_show_percpuinfo(struct seq_file *m, int i) |
| 558 | { |
| 559 | /* PREP's without residual data will give incorrect values here */ |
| 560 | seq_printf(m, "clock\t\t: "); |
| 561 | if (have_residual_data) |
| 562 | seq_printf(m, "%ldMHz\n", |
| 563 | (res->VitalProductData.ProcessorHz > 1024) ? |
| 564 | res->VitalProductData.ProcessorHz / 1000000 : |
| 565 | res->VitalProductData.ProcessorHz); |
| 566 | else |
| 567 | seq_printf(m, "???\n"); |
| 568 | |
| 569 | return 0; |
| 570 | } |
| 571 | |
| 572 | #ifdef CONFIG_SOUND_CS4232 |
| 573 | static long __init masktoint(unsigned int i) |
| 574 | { |
| 575 | int t = -1; |
| 576 | while (i >> ++t) |
| 577 | ; |
| 578 | return (t-1); |
| 579 | } |
| 580 | |
| 581 | /* |
| 582 | * ppc_cs4232_dma and ppc_cs4232_dma2 are used in include/asm/dma.h |
| 583 | * to distinguish sound dma-channels from others. This is because |
| 584 | * blocksize on 16 bit dma-channels 5,6,7 is 128k, but |
| 585 | * the cs4232.c uses 64k like on 8 bit dma-channels 0,1,2,3 |
| 586 | */ |
| 587 | |
| 588 | static void __init prep_init_sound(void) |
| 589 | { |
| 590 | PPC_DEVICE *audiodevice = NULL; |
| 591 | |
| 592 | /* |
Simon Arlott | a8de5ce | 2007-05-12 05:42:54 +1000 | [diff] [blame] | 593 | * Get the needed resource information from residual data. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 594 | * |
| 595 | */ |
| 596 | if (have_residual_data) |
| 597 | audiodevice = residual_find_device(~0, NULL, |
| 598 | MultimediaController, AudioController, -1, 0); |
| 599 | |
| 600 | if (audiodevice != NULL) { |
| 601 | PnP_TAG_PACKET *pkt; |
| 602 | |
| 603 | pkt = PnP_find_packet((unsigned char *)&res->DevicePnPHeap[audiodevice->AllocatedOffset], |
| 604 | S5_Packet, 0); |
| 605 | if (pkt != NULL) |
| 606 | ppc_cs4232_dma = masktoint(pkt->S5_Pack.DMAMask); |
| 607 | pkt = PnP_find_packet((unsigned char*)&res->DevicePnPHeap[audiodevice->AllocatedOffset], |
| 608 | S5_Packet, 1); |
| 609 | if (pkt != NULL) |
| 610 | ppc_cs4232_dma2 = masktoint(pkt->S5_Pack.DMAMask); |
| 611 | } |
| 612 | |
| 613 | /* |
| 614 | * These are the PReP specs' defaults for the cs4231. We use these |
| 615 | * as fallback incase we don't have residual data. |
| 616 | * At least the IBM Thinkpad 850 with IDE DMA Channels at 6 and 7 |
| 617 | * will use the other values. |
| 618 | */ |
| 619 | if (audiodevice == NULL) { |
| 620 | switch (_prep_type) { |
| 621 | case _PREP_IBM: |
| 622 | ppc_cs4232_dma = 1; |
| 623 | ppc_cs4232_dma2 = -1; |
| 624 | break; |
| 625 | default: |
| 626 | ppc_cs4232_dma = 6; |
| 627 | ppc_cs4232_dma2 = 7; |
| 628 | } |
| 629 | } |
| 630 | |
| 631 | /* |
Simon Arlott | a8de5ce | 2007-05-12 05:42:54 +1000 | [diff] [blame] | 632 | * Find a way to push this information to the cs4232 driver |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 633 | * Give it out with printk, when not in cmd_line? |
Simon Arlott | a8de5ce | 2007-05-12 05:42:54 +1000 | [diff] [blame] | 634 | * Append it to cmd_line and boot_command_line? |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 635 | * Format is cs4232=io,irq,dma,dma2 |
| 636 | */ |
| 637 | } |
| 638 | #endif /* CONFIG_SOUND_CS4232 */ |
| 639 | |
| 640 | /* |
| 641 | * Fill out screen_info according to the residual data. This allows us to use |
| 642 | * at least vesafb. |
| 643 | */ |
| 644 | static void __init |
| 645 | prep_init_vesa(void) |
| 646 | { |
| 647 | #if (defined(CONFIG_FB_VGA16) || defined(CONFIG_FB_VGA16_MODULE) || \ |
| 648 | defined(CONFIG_FB_VESA)) |
| 649 | PPC_DEVICE *vgadev = NULL; |
| 650 | |
| 651 | if (have_residual_data) |
| 652 | vgadev = residual_find_device(~0, NULL, DisplayController, |
| 653 | SVGAController, -1, 0); |
| 654 | |
| 655 | if (vgadev != NULL) { |
| 656 | PnP_TAG_PACKET *pkt; |
| 657 | |
| 658 | pkt = PnP_find_large_vendor_packet( |
| 659 | (unsigned char *)&res->DevicePnPHeap[vgadev->AllocatedOffset], |
| 660 | 0x04, 0); /* 0x04 = Display Tag */ |
| 661 | if (pkt != NULL) { |
| 662 | unsigned char *ptr = (unsigned char *)pkt; |
| 663 | |
| 664 | if (ptr[4]) { |
| 665 | /* graphics mode */ |
| 666 | screen_info.orig_video_isVGA = VIDEO_TYPE_VLFB; |
| 667 | |
| 668 | screen_info.lfb_depth = ptr[4] * 8; |
| 669 | |
| 670 | screen_info.lfb_width = swab16(*(short *)(ptr+6)); |
| 671 | screen_info.lfb_height = swab16(*(short *)(ptr+8)); |
| 672 | screen_info.lfb_linelength = swab16(*(short *)(ptr+10)); |
| 673 | |
| 674 | screen_info.lfb_base = swab32(*(long *)(ptr+12)); |
| 675 | screen_info.lfb_size = swab32(*(long *)(ptr+20)) / 65536; |
| 676 | } |
| 677 | } |
| 678 | } |
| 679 | #endif |
| 680 | } |
| 681 | |
| 682 | /* |
| 683 | * Set DBAT 2 to access 0x80000000 so early progress messages will work |
| 684 | */ |
| 685 | static __inline__ void |
| 686 | prep_set_bat(void) |
| 687 | { |
| 688 | /* wait for all outstanding memory access to complete */ |
| 689 | mb(); |
| 690 | |
| 691 | /* setup DBATs */ |
| 692 | mtspr(SPRN_DBAT2U, 0x80001ffe); |
| 693 | mtspr(SPRN_DBAT2L, 0x8000002a); |
| 694 | |
| 695 | /* wait for updates */ |
| 696 | mb(); |
| 697 | } |
| 698 | |
| 699 | /* |
| 700 | * IBM 3-digit status LED |
| 701 | */ |
Jon Loeliger | f495a8b | 2005-09-17 10:35:08 -0500 | [diff] [blame] | 702 | static unsigned int ibm_statusled_base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 703 | |
Jon Loeliger | f495a8b | 2005-09-17 10:35:08 -0500 | [diff] [blame] | 704 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 705 | ibm_statusled_progress(char *s, unsigned short hex); |
| 706 | |
Jon Loeliger | f495a8b | 2005-09-17 10:35:08 -0500 | [diff] [blame] | 707 | static int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 708 | ibm_statusled_panic(struct notifier_block *dummy1, unsigned long dummy2, |
| 709 | void * dummy3) |
| 710 | { |
| 711 | ibm_statusled_progress(NULL, 0x505); /* SOS */ |
| 712 | return NOTIFY_DONE; |
| 713 | } |
| 714 | |
Jon Loeliger | f495a8b | 2005-09-17 10:35:08 -0500 | [diff] [blame] | 715 | static struct notifier_block ibm_statusled_block = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 716 | ibm_statusled_panic, |
| 717 | NULL, |
| 718 | INT_MAX /* try to do it first */ |
| 719 | }; |
| 720 | |
Jon Loeliger | f495a8b | 2005-09-17 10:35:08 -0500 | [diff] [blame] | 721 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 722 | ibm_statusled_progress(char *s, unsigned short hex) |
| 723 | { |
| 724 | static int notifier_installed; |
| 725 | /* |
| 726 | * Progress uses 4 digits and we have only 3. So, we map 0xffff to |
| 727 | * 0xfff for display switch off. Out of range values are mapped to |
| 728 | * 0xeff, as I'm told 0xf00 and above are reserved for hardware codes. |
| 729 | * Install the panic notifier when the display is first switched off. |
| 730 | */ |
| 731 | if (hex == 0xffff) { |
| 732 | hex = 0xfff; |
| 733 | if (!notifier_installed) { |
| 734 | ++notifier_installed; |
Alan Stern | e041c68 | 2006-03-27 01:16:30 -0800 | [diff] [blame] | 735 | atomic_notifier_chain_register(&panic_notifier_list, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 736 | &ibm_statusled_block); |
| 737 | } |
| 738 | } |
| 739 | else |
| 740 | if (hex > 0xfff) |
| 741 | hex = 0xeff; |
| 742 | |
| 743 | mb(); |
| 744 | outw(hex, ibm_statusled_base); |
| 745 | } |
| 746 | |
| 747 | static void __init |
| 748 | ibm_statusled_init(void) |
| 749 | { |
| 750 | /* |
| 751 | * The IBM 3-digit LED display is specified in the residual data |
| 752 | * as an operator panel device, type "System Status LED". Find |
| 753 | * that device and determine its address. We validate all the |
| 754 | * other parameters on the off-chance another, similar device |
| 755 | * exists. |
| 756 | */ |
| 757 | if (have_residual_data) { |
| 758 | PPC_DEVICE *led; |
| 759 | PnP_TAG_PACKET *pkt; |
| 760 | |
| 761 | led = residual_find_device(~0, NULL, SystemPeripheral, |
| 762 | OperatorPanel, SystemStatusLED, 0); |
| 763 | if (!led) |
| 764 | return; |
| 765 | |
| 766 | pkt = PnP_find_packet((unsigned char *) |
| 767 | &res->DevicePnPHeap[led->AllocatedOffset], S8_Packet, 0); |
| 768 | if (!pkt) |
| 769 | return; |
| 770 | |
| 771 | if (pkt->S8_Pack.IOInfo != ISAAddr16bit) |
| 772 | return; |
| 773 | if (*(unsigned short *)pkt->S8_Pack.RangeMin != |
| 774 | *(unsigned short *)pkt->S8_Pack.RangeMax) |
| 775 | return; |
| 776 | if (pkt->S8_Pack.IOAlign != 2) |
| 777 | return; |
| 778 | if (pkt->S8_Pack.IONum != 2) |
| 779 | return; |
| 780 | |
| 781 | ibm_statusled_base = ld_le16((unsigned short *) |
| 782 | (pkt->S8_Pack.RangeMin)); |
| 783 | ppc_md.progress = ibm_statusled_progress; |
| 784 | } |
| 785 | } |
| 786 | |
| 787 | static void __init |
| 788 | prep_setup_arch(void) |
| 789 | { |
| 790 | unsigned char reg; |
| 791 | int is_ide=0; |
| 792 | |
| 793 | /* init to some ~sane value until calibrate_delay() runs */ |
| 794 | loops_per_jiffy = 50000000; |
| 795 | |
| 796 | /* Lookup PCI host bridges */ |
| 797 | prep_find_bridges(); |
| 798 | |
| 799 | /* Set up floppy in PS/2 mode */ |
| 800 | outb(0x09, SIO_CONFIG_RA); |
| 801 | reg = inb(SIO_CONFIG_RD); |
| 802 | reg = (reg & 0x3F) | 0x40; |
| 803 | outb(reg, SIO_CONFIG_RD); |
| 804 | outb(reg, SIO_CONFIG_RD); /* Have to write twice to change! */ |
| 805 | |
| 806 | switch ( _prep_type ) |
| 807 | { |
| 808 | case _PREP_IBM: |
| 809 | reg = inb(PREP_IBM_PLANAR); |
| 810 | printk(KERN_INFO "IBM planar ID: %02x", reg); |
| 811 | switch (reg) { |
| 812 | case PREP_IBM_SANDALFOOT: |
| 813 | prep_gen_enable_l2(); |
| 814 | setup_ibm_pci = prep_sandalfoot_setup_pci; |
| 815 | ppc_md.power_off = prep_sig750_poweroff; |
| 816 | ppc_md.show_cpuinfo = prep_sandalfoot_cpuinfo; |
| 817 | break; |
| 818 | case PREP_IBM_THINKPAD: |
| 819 | prep_gen_enable_l2(); |
| 820 | setup_ibm_pci = prep_thinkpad_setup_pci; |
| 821 | ppc_md.power_off = prep_carrera_poweroff; |
| 822 | ppc_md.show_cpuinfo = prep_thinkpad_cpuinfo; |
| 823 | break; |
| 824 | default: |
| 825 | if (have_residual_data) { |
| 826 | prep_gen_enable_l2(); |
| 827 | setup_ibm_pci = prep_residual_setup_pci; |
| 828 | ppc_md.power_off = prep_halt; |
| 829 | ppc_md.show_cpuinfo = prep_gen_cpuinfo; |
| 830 | break; |
| 831 | } |
| 832 | else |
| 833 | printk(" - unknown! Assuming Carolina"); |
| 834 | /* fall through */ |
| 835 | case PREP_IBM_CAROLINA_IDE_0: |
| 836 | case PREP_IBM_CAROLINA_IDE_1: |
| 837 | case PREP_IBM_CAROLINA_IDE_2: |
| 838 | case PREP_IBM_CAROLINA_IDE_3: |
| 839 | is_ide = 1; |
| 840 | case PREP_IBM_CAROLINA_SCSI_0: |
| 841 | case PREP_IBM_CAROLINA_SCSI_1: |
| 842 | case PREP_IBM_CAROLINA_SCSI_2: |
| 843 | case PREP_IBM_CAROLINA_SCSI_3: |
| 844 | prep_carolina_enable_l2(); |
| 845 | setup_ibm_pci = prep_carolina_setup_pci; |
| 846 | ppc_md.power_off = prep_sig750_poweroff; |
| 847 | ppc_md.show_cpuinfo = prep_carolina_cpuinfo; |
| 848 | break; |
| 849 | case PREP_IBM_TIGER1_133: |
| 850 | case PREP_IBM_TIGER1_166: |
| 851 | case PREP_IBM_TIGER1_180: |
| 852 | case PREP_IBM_TIGER1_xxx: |
| 853 | case PREP_IBM_TIGER1_333: |
| 854 | prep_carolina_enable_l2(); |
| 855 | setup_ibm_pci = prep_tiger1_setup_pci; |
| 856 | ppc_md.power_off = prep_sig750_poweroff; |
| 857 | ppc_md.show_cpuinfo = prep_tiger1_cpuinfo; |
| 858 | break; |
| 859 | } |
| 860 | printk("\n"); |
| 861 | |
| 862 | /* default root device */ |
| 863 | if (is_ide) |
| 864 | ROOT_DEV = MKDEV(IDE0_MAJOR, 3); |
| 865 | else |
| 866 | ROOT_DEV = MKDEV(SCSI_DISK0_MAJOR, 3); |
| 867 | |
| 868 | break; |
| 869 | case _PREP_Motorola: |
| 870 | prep_gen_enable_l2(); |
| 871 | ppc_md.power_off = prep_halt; |
| 872 | ppc_md.show_cpuinfo = prep_mot_cpuinfo; |
| 873 | |
| 874 | #ifdef CONFIG_BLK_DEV_INITRD |
| 875 | if (initrd_start) |
| 876 | ROOT_DEV = Root_RAM0; |
| 877 | else |
| 878 | #endif |
| 879 | #ifdef CONFIG_ROOT_NFS |
| 880 | ROOT_DEV = Root_NFS; |
| 881 | #else |
| 882 | ROOT_DEV = Root_SDA2; |
| 883 | #endif |
| 884 | break; |
| 885 | } |
| 886 | |
| 887 | /* Read in NVRAM data */ |
| 888 | init_prep_nvram(); |
| 889 | |
| 890 | /* if no bootargs, look in NVRAM */ |
| 891 | if ( cmd_line[0] == '\0' ) { |
| 892 | char *bootargs; |
| 893 | bootargs = prep_nvram_get_var("bootargs"); |
| 894 | if (bootargs != NULL) { |
| 895 | strcpy(cmd_line, bootargs); |
| 896 | /* again.. */ |
Alon Bar-Lev | bf71cec | 2007-02-12 00:54:18 -0800 | [diff] [blame] | 897 | strcpy(boot_command_line, cmd_line); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 898 | } |
| 899 | } |
| 900 | |
| 901 | #ifdef CONFIG_SOUND_CS4232 |
| 902 | prep_init_sound(); |
| 903 | #endif /* CONFIG_SOUND_CS4232 */ |
| 904 | |
| 905 | prep_init_vesa(); |
| 906 | |
| 907 | switch (_prep_type) { |
| 908 | case _PREP_Motorola: |
| 909 | raven_init(); |
| 910 | break; |
| 911 | case _PREP_IBM: |
| 912 | ibm_prep_init(); |
| 913 | break; |
| 914 | } |
| 915 | |
| 916 | #ifdef CONFIG_VGA_CONSOLE |
| 917 | /* vgacon.c needs to know where we mapped IO memory in io_block_mapping() */ |
| 918 | vgacon_remap_base = 0xf0000000; |
| 919 | conswitchp = &vga_con; |
| 920 | #endif |
| 921 | } |
| 922 | |
| 923 | /* |
| 924 | * First, see if we can get this information from the residual data. |
| 925 | * This is important on some IBM PReP systems. If we cannot, we let the |
| 926 | * TODC code handle doing this. |
| 927 | */ |
| 928 | static void __init |
| 929 | prep_calibrate_decr(void) |
| 930 | { |
| 931 | if (have_residual_data) { |
| 932 | unsigned long freq, divisor = 4; |
| 933 | |
| 934 | if ( res->VitalProductData.ProcessorBusHz ) { |
| 935 | freq = res->VitalProductData.ProcessorBusHz; |
| 936 | printk("time_init: decrementer frequency = %lu.%.6lu MHz\n", |
| 937 | (freq/divisor)/1000000, |
| 938 | (freq/divisor)%1000000); |
| 939 | tb_to_us = mulhwu_scale_factor(freq/divisor, 1000000); |
| 940 | tb_ticks_per_jiffy = freq / HZ / divisor; |
| 941 | } |
| 942 | } |
| 943 | else |
| 944 | todc_calibrate_decr(); |
| 945 | } |
| 946 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 947 | static void __init |
| 948 | prep_init_IRQ(void) |
| 949 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 950 | unsigned int pci_viddid, pci_did; |
| 951 | |
| 952 | if (OpenPIC_Addr != NULL) { |
| 953 | openpic_init(NUM_8259_INTERRUPTS); |
| 954 | /* We have a cascade on OpenPIC IRQ 0, Linux IRQ 16 */ |
| 955 | openpic_hookup_cascade(NUM_8259_INTERRUPTS, "82c59 cascade", |
| 956 | i8259_irq); |
| 957 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 958 | |
| 959 | if (have_residual_data) { |
Paul Mackerras | f9bd170 | 2005-10-26 16:47:42 +1000 | [diff] [blame] | 960 | i8259_init(residual_isapic_addr(), 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 961 | return; |
| 962 | } |
| 963 | |
| 964 | /* If we have a Raven PCI bridge or a Hawk PCI bridge / Memory |
| 965 | * controller, we poll (as they have a different int-ack address). */ |
| 966 | early_read_config_dword(NULL, 0, 0, PCI_VENDOR_ID, &pci_viddid); |
| 967 | pci_did = (pci_viddid & 0xffff0000) >> 16; |
| 968 | if (((pci_viddid & 0xffff) == PCI_VENDOR_ID_MOTOROLA) |
| 969 | && ((pci_did == PCI_DEVICE_ID_MOTOROLA_RAVEN) |
| 970 | || (pci_did == PCI_DEVICE_ID_MOTOROLA_HAWK))) |
Paul Mackerras | f9bd170 | 2005-10-26 16:47:42 +1000 | [diff] [blame] | 971 | i8259_init(0, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 972 | else |
| 973 | /* PCI interrupt ack address given in section 6.1.8 of the |
| 974 | * PReP specification. */ |
Paul Mackerras | f9bd170 | 2005-10-26 16:47:42 +1000 | [diff] [blame] | 975 | i8259_init(MPC10X_MAPA_PCI_INTACK_ADDR, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 976 | } |
| 977 | |
| 978 | #if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE) |
| 979 | /* |
| 980 | * IDE stuff. |
| 981 | */ |
Jon Loeliger | f495a8b | 2005-09-17 10:35:08 -0500 | [diff] [blame] | 982 | static int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 983 | prep_ide_default_irq(unsigned long base) |
| 984 | { |
| 985 | switch (base) { |
| 986 | case 0x1f0: return 13; |
| 987 | case 0x170: return 13; |
| 988 | case 0x1e8: return 11; |
| 989 | case 0x168: return 10; |
| 990 | case 0xfff0: return 14; /* MCP(N)750 ide0 */ |
| 991 | case 0xffe0: return 15; /* MCP(N)750 ide1 */ |
| 992 | default: return 0; |
| 993 | } |
| 994 | } |
| 995 | |
Jon Loeliger | f495a8b | 2005-09-17 10:35:08 -0500 | [diff] [blame] | 996 | static unsigned long |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 997 | prep_ide_default_io_base(int index) |
| 998 | { |
| 999 | switch (index) { |
| 1000 | case 0: return 0x1f0; |
| 1001 | case 1: return 0x170; |
| 1002 | case 2: return 0x1e8; |
| 1003 | case 3: return 0x168; |
| 1004 | default: |
| 1005 | return 0; |
| 1006 | } |
| 1007 | } |
| 1008 | #endif |
| 1009 | |
| 1010 | #ifdef CONFIG_SMP |
| 1011 | /* PReP (MTX) support */ |
| 1012 | static int __init |
| 1013 | smp_prep_probe(void) |
| 1014 | { |
| 1015 | extern int mot_multi; |
| 1016 | |
| 1017 | if (mot_multi) { |
| 1018 | openpic_request_IPIs(); |
| 1019 | smp_hw_index[1] = 1; |
| 1020 | return 2; |
| 1021 | } |
| 1022 | |
| 1023 | return 1; |
| 1024 | } |
| 1025 | |
| 1026 | static void __init |
| 1027 | smp_prep_kick_cpu(int nr) |
| 1028 | { |
| 1029 | *(unsigned long *)KERNELBASE = nr; |
| 1030 | asm volatile("dcbf 0,%0"::"r"(KERNELBASE):"memory"); |
| 1031 | printk("CPU1 released, waiting\n"); |
| 1032 | } |
| 1033 | |
| 1034 | static void __init |
| 1035 | smp_prep_setup_cpu(int cpu_nr) |
| 1036 | { |
| 1037 | if (OpenPIC_Addr) |
| 1038 | do_openpic_setup_cpu(); |
| 1039 | } |
| 1040 | |
Jon Loeliger | f495a8b | 2005-09-17 10:35:08 -0500 | [diff] [blame] | 1041 | static struct smp_ops_t prep_smp_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1042 | smp_openpic_message_pass, |
| 1043 | smp_prep_probe, |
| 1044 | smp_prep_kick_cpu, |
| 1045 | smp_prep_setup_cpu, |
| 1046 | .give_timebase = smp_generic_give_timebase, |
| 1047 | .take_timebase = smp_generic_take_timebase, |
| 1048 | }; |
| 1049 | #endif /* CONFIG_SMP */ |
| 1050 | |
| 1051 | /* |
| 1052 | * Setup the bat mappings we're going to load that cover |
| 1053 | * the io areas. RAM was mapped by mapin_ram(). |
| 1054 | * -- Cort |
| 1055 | */ |
| 1056 | static void __init |
| 1057 | prep_map_io(void) |
| 1058 | { |
| 1059 | io_block_mapping(0x80000000, PREP_ISA_IO_BASE, 0x10000000, _PAGE_IO); |
| 1060 | io_block_mapping(0xf0000000, PREP_ISA_MEM_BASE, 0x08000000, _PAGE_IO); |
| 1061 | } |
| 1062 | |
| 1063 | static int __init |
| 1064 | prep_request_io(void) |
| 1065 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1066 | #ifdef CONFIG_NVRAM |
Benjamin Herrenschmidt | e822250 | 2006-03-28 23:15:54 +1100 | [diff] [blame] | 1067 | request_region(PREP_NVRAM_AS0, 0x8, "nvram"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1068 | #endif |
Benjamin Herrenschmidt | e822250 | 2006-03-28 23:15:54 +1100 | [diff] [blame] | 1069 | request_region(0x00,0x20,"dma1"); |
| 1070 | request_region(0x40,0x20,"timer"); |
| 1071 | request_region(0x80,0x10,"dma page reg"); |
| 1072 | request_region(0xc0,0x20,"dma2"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1073 | |
| 1074 | return 0; |
| 1075 | } |
| 1076 | |
| 1077 | device_initcall(prep_request_io); |
| 1078 | |
| 1079 | void __init |
| 1080 | prep_init(unsigned long r3, unsigned long r4, unsigned long r5, |
| 1081 | unsigned long r6, unsigned long r7) |
| 1082 | { |
| 1083 | #ifdef CONFIG_PREP_RESIDUAL |
| 1084 | /* make a copy of residual data */ |
| 1085 | if ( r3 ) { |
| 1086 | memcpy((void *)res,(void *)(r3+KERNELBASE), |
| 1087 | sizeof(RESIDUAL)); |
| 1088 | } |
| 1089 | #endif |
| 1090 | |
| 1091 | isa_io_base = PREP_ISA_IO_BASE; |
| 1092 | isa_mem_base = PREP_ISA_MEM_BASE; |
| 1093 | pci_dram_offset = PREP_PCI_DRAM_OFFSET; |
| 1094 | ISA_DMA_THRESHOLD = 0x00ffffff; |
| 1095 | DMA_MODE_READ = 0x44; |
| 1096 | DMA_MODE_WRITE = 0x48; |
Paul Mackerras | 35d81a4b | 2005-10-11 22:03:09 +1000 | [diff] [blame] | 1097 | ppc_do_canonicalize_irqs = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1098 | |
| 1099 | /* figure out what kind of prep workstation we are */ |
| 1100 | if (have_residual_data) { |
| 1101 | if ( !strncmp(res->VitalProductData.PrintableModel,"IBM",3) ) |
| 1102 | _prep_type = _PREP_IBM; |
| 1103 | else |
| 1104 | _prep_type = _PREP_Motorola; |
| 1105 | } |
| 1106 | else { |
| 1107 | /* assume motorola if no residual (netboot?) */ |
| 1108 | _prep_type = _PREP_Motorola; |
| 1109 | } |
| 1110 | |
| 1111 | #ifdef CONFIG_PREP_RESIDUAL |
| 1112 | /* Switch off all residual data processing if the user requests it */ |
| 1113 | if (strstr(cmd_line, "noresidual") != NULL) |
| 1114 | res = NULL; |
| 1115 | #endif |
| 1116 | |
| 1117 | /* Initialise progress early to get maximum benefit */ |
| 1118 | prep_set_bat(); |
| 1119 | ibm_statusled_init(); |
| 1120 | |
| 1121 | ppc_md.setup_arch = prep_setup_arch; |
| 1122 | ppc_md.show_percpuinfo = prep_show_percpuinfo; |
| 1123 | ppc_md.show_cpuinfo = NULL; /* set in prep_setup_arch() */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1124 | ppc_md.init_IRQ = prep_init_IRQ; |
| 1125 | /* this gets changed later on if we have an OpenPIC -- Cort */ |
| 1126 | ppc_md.get_irq = i8259_irq; |
| 1127 | |
| 1128 | ppc_md.phys_mem_access_prot = pci_phys_mem_access_prot; |
| 1129 | |
| 1130 | ppc_md.restart = prep_restart; |
| 1131 | ppc_md.power_off = NULL; /* set in prep_setup_arch() */ |
| 1132 | ppc_md.halt = prep_halt; |
| 1133 | |
| 1134 | ppc_md.nvram_read_val = prep_nvram_read_val; |
| 1135 | ppc_md.nvram_write_val = prep_nvram_write_val; |
| 1136 | |
| 1137 | ppc_md.time_init = todc_time_init; |
| 1138 | if (_prep_type == _PREP_IBM) { |
| 1139 | ppc_md.rtc_read_val = todc_mc146818_read_val; |
| 1140 | ppc_md.rtc_write_val = todc_mc146818_write_val; |
| 1141 | TODC_INIT(TODC_TYPE_MC146818, RTC_PORT(0), NULL, RTC_PORT(1), |
| 1142 | 8); |
| 1143 | } else { |
| 1144 | TODC_INIT(TODC_TYPE_MK48T59, PREP_NVRAM_AS0, PREP_NVRAM_AS1, |
| 1145 | PREP_NVRAM_DATA, 8); |
| 1146 | } |
| 1147 | |
| 1148 | ppc_md.calibrate_decr = prep_calibrate_decr; |
| 1149 | ppc_md.set_rtc_time = todc_set_rtc_time; |
| 1150 | ppc_md.get_rtc_time = todc_get_rtc_time; |
| 1151 | |
| 1152 | ppc_md.setup_io_mappings = prep_map_io; |
| 1153 | |
| 1154 | #if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE) |
| 1155 | ppc_ide_md.default_irq = prep_ide_default_irq; |
| 1156 | ppc_ide_md.default_io_base = prep_ide_default_io_base; |
| 1157 | #endif |
| 1158 | |
| 1159 | #ifdef CONFIG_SMP |
Paul Mackerras | 7ed476d | 2005-10-19 21:44:51 +1000 | [diff] [blame] | 1160 | smp_ops = &prep_smp_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1161 | #endif /* CONFIG_SMP */ |
| 1162 | } |