Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2000 Mike Corrigan <mikejc@us.ibm.com> |
| 3 | * Copyright (c) 1999-2000 Grant Erickson <grant@lcse.umn.edu> |
| 4 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5 | * Description: |
| 6 | * Architecture- / platform-specific boot-time initialization code for |
| 7 | * the IBM iSeries LPAR. Adapted from original code by Grant Erickson and |
| 8 | * code by Gary Thomas, Cort Dougan <cort@fsmlabs.com>, and Dan Malek |
| 9 | * <dan@net4x.com>. |
| 10 | * |
| 11 | * This program is free software; you can redistribute it and/or |
| 12 | * modify it under the terms of the GNU General Public License |
| 13 | * as published by the Free Software Foundation; either version |
| 14 | * 2 of the License, or (at your option) any later version. |
| 15 | */ |
| 16 | |
| 17 | #undef DEBUG |
| 18 | |
| 19 | #include <linux/config.h> |
| 20 | #include <linux/init.h> |
| 21 | #include <linux/threads.h> |
| 22 | #include <linux/smp.h> |
| 23 | #include <linux/param.h> |
| 24 | #include <linux/string.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 25 | #include <linux/initrd.h> |
| 26 | #include <linux/seq_file.h> |
| 27 | #include <linux/kdev_t.h> |
| 28 | #include <linux/major.h> |
| 29 | #include <linux/root_dev.h> |
Stephen Rothwell | bec7c45 | 2005-11-01 11:45:19 +1100 | [diff] [blame] | 30 | #include <linux/kernel.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | |
| 32 | #include <asm/processor.h> |
| 33 | #include <asm/machdep.h> |
| 34 | #include <asm/page.h> |
| 35 | #include <asm/mmu.h> |
| 36 | #include <asm/pgtable.h> |
| 37 | #include <asm/mmu_context.h> |
| 38 | #include <asm/cputable.h> |
| 39 | #include <asm/sections.h> |
| 40 | #include <asm/iommu.h> |
Stephen Rothwell | aed3135 | 2005-08-03 14:43:21 +1000 | [diff] [blame] | 41 | #include <asm/firmware.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | |
| 43 | #include <asm/time.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | #include <asm/paca.h> |
| 45 | #include <asm/cache.h> |
| 46 | #include <asm/sections.h> |
Stephen Rothwell | 0bc0ffd | 2005-06-21 17:15:36 -0700 | [diff] [blame] | 47 | #include <asm/abs_addr.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | #include <asm/iSeries/HvLpConfig.h> |
| 49 | #include <asm/iSeries/HvCallEvent.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | #include <asm/iSeries/HvCallXm.h> |
| 51 | #include <asm/iSeries/ItLpQueue.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | #include <asm/iSeries/mf.h> |
| 53 | #include <asm/iSeries/HvLpEvent.h> |
Stephen Rothwell | 0bc0ffd | 2005-06-21 17:15:36 -0700 | [diff] [blame] | 54 | #include <asm/iSeries/LparMap.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | |
David Gibson | f11b7bd | 2005-11-01 15:30:26 +1100 | [diff] [blame^] | 56 | #include "naca.h" |
Stephen Rothwell | c8b8497 | 2005-09-27 18:44:42 +1000 | [diff] [blame] | 57 | #include "setup.h" |
Stephen Rothwell | b08567cb | 2005-09-28 23:37:01 +1000 | [diff] [blame] | 58 | #include "irq.h" |
| 59 | #include "vpd_areas.h" |
| 60 | #include "processor_vpd.h" |
| 61 | #include "main_store.h" |
| 62 | #include "call_sm.h" |
Stephen Rothwell | 0e29bb1 | 2005-10-14 17:09:16 +1000 | [diff] [blame] | 63 | #include "call_hpt.h" |
Stephen Rothwell | c8b8497 | 2005-09-27 18:44:42 +1000 | [diff] [blame] | 64 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | extern void hvlog(char *fmt, ...); |
| 66 | |
| 67 | #ifdef DEBUG |
| 68 | #define DBG(fmt...) hvlog(fmt) |
| 69 | #else |
| 70 | #define DBG(fmt...) |
| 71 | #endif |
| 72 | |
| 73 | /* Function Prototypes */ |
| 74 | extern void ppcdbg_initialize(void); |
| 75 | |
| 76 | static void build_iSeries_Memory_Map(void); |
Paul Mackerras | 143a1de | 2005-10-19 23:11:21 +1000 | [diff] [blame] | 77 | static void iseries_shared_idle(void); |
| 78 | static void iseries_dedicated_idle(void); |
Stephen Rothwell | 145d01e | 2005-06-21 17:15:52 -0700 | [diff] [blame] | 79 | #ifdef CONFIG_PCI |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 80 | extern void iSeries_pci_final_fixup(void); |
Stephen Rothwell | 145d01e | 2005-06-21 17:15:52 -0700 | [diff] [blame] | 81 | #else |
| 82 | static void iSeries_pci_final_fixup(void) { } |
| 83 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 84 | |
| 85 | /* Global Variables */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | int piranha_simulator; |
| 87 | |
| 88 | extern int rd_size; /* Defined in drivers/block/rd.c */ |
| 89 | extern unsigned long klimit; |
| 90 | extern unsigned long embedded_sysmap_start; |
| 91 | extern unsigned long embedded_sysmap_end; |
| 92 | |
| 93 | extern unsigned long iSeries_recal_tb; |
| 94 | extern unsigned long iSeries_recal_titan; |
| 95 | |
| 96 | static int mf_initialized; |
| 97 | |
Stephen Rothwell | bec7c45 | 2005-11-01 11:45:19 +1100 | [diff] [blame] | 98 | static unsigned long cmd_mem_limit; |
| 99 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | struct MemoryBlock { |
| 101 | unsigned long absStart; |
| 102 | unsigned long absEnd; |
| 103 | unsigned long logicalStart; |
| 104 | unsigned long logicalEnd; |
| 105 | }; |
| 106 | |
| 107 | /* |
| 108 | * Process the main store vpd to determine where the holes in memory are |
| 109 | * and return the number of physical blocks and fill in the array of |
| 110 | * block data. |
| 111 | */ |
| 112 | static unsigned long iSeries_process_Condor_mainstore_vpd( |
| 113 | struct MemoryBlock *mb_array, unsigned long max_entries) |
| 114 | { |
| 115 | unsigned long holeFirstChunk, holeSizeChunks; |
| 116 | unsigned long numMemoryBlocks = 1; |
| 117 | struct IoHriMainStoreSegment4 *msVpd = |
| 118 | (struct IoHriMainStoreSegment4 *)xMsVpd; |
| 119 | unsigned long holeStart = msVpd->nonInterleavedBlocksStartAdr; |
| 120 | unsigned long holeEnd = msVpd->nonInterleavedBlocksEndAdr; |
| 121 | unsigned long holeSize = holeEnd - holeStart; |
| 122 | |
| 123 | printk("Mainstore_VPD: Condor\n"); |
| 124 | /* |
| 125 | * Determine if absolute memory has any |
| 126 | * holes so that we can interpret the |
| 127 | * access map we get back from the hypervisor |
| 128 | * correctly. |
| 129 | */ |
| 130 | mb_array[0].logicalStart = 0; |
| 131 | mb_array[0].logicalEnd = 0x100000000; |
| 132 | mb_array[0].absStart = 0; |
| 133 | mb_array[0].absEnd = 0x100000000; |
| 134 | |
| 135 | if (holeSize) { |
| 136 | numMemoryBlocks = 2; |
| 137 | holeStart = holeStart & 0x000fffffffffffff; |
| 138 | holeStart = addr_to_chunk(holeStart); |
| 139 | holeFirstChunk = holeStart; |
| 140 | holeSize = addr_to_chunk(holeSize); |
| 141 | holeSizeChunks = holeSize; |
| 142 | printk( "Main store hole: start chunk = %0lx, size = %0lx chunks\n", |
| 143 | holeFirstChunk, holeSizeChunks ); |
| 144 | mb_array[0].logicalEnd = holeFirstChunk; |
| 145 | mb_array[0].absEnd = holeFirstChunk; |
| 146 | mb_array[1].logicalStart = holeFirstChunk; |
| 147 | mb_array[1].logicalEnd = 0x100000000 - holeSizeChunks; |
| 148 | mb_array[1].absStart = holeFirstChunk + holeSizeChunks; |
| 149 | mb_array[1].absEnd = 0x100000000; |
| 150 | } |
| 151 | return numMemoryBlocks; |
| 152 | } |
| 153 | |
| 154 | #define MaxSegmentAreas 32 |
| 155 | #define MaxSegmentAdrRangeBlocks 128 |
| 156 | #define MaxAreaRangeBlocks 4 |
| 157 | |
| 158 | static unsigned long iSeries_process_Regatta_mainstore_vpd( |
| 159 | struct MemoryBlock *mb_array, unsigned long max_entries) |
| 160 | { |
| 161 | struct IoHriMainStoreSegment5 *msVpdP = |
| 162 | (struct IoHriMainStoreSegment5 *)xMsVpd; |
| 163 | unsigned long numSegmentBlocks = 0; |
| 164 | u32 existsBits = msVpdP->msAreaExists; |
| 165 | unsigned long area_num; |
| 166 | |
| 167 | printk("Mainstore_VPD: Regatta\n"); |
| 168 | |
| 169 | for (area_num = 0; area_num < MaxSegmentAreas; ++area_num ) { |
| 170 | unsigned long numAreaBlocks; |
| 171 | struct IoHriMainStoreArea4 *currentArea; |
| 172 | |
| 173 | if (existsBits & 0x80000000) { |
| 174 | unsigned long block_num; |
| 175 | |
| 176 | currentArea = &msVpdP->msAreaArray[area_num]; |
| 177 | numAreaBlocks = currentArea->numAdrRangeBlocks; |
| 178 | printk("ms_vpd: processing area %2ld blocks=%ld", |
| 179 | area_num, numAreaBlocks); |
| 180 | for (block_num = 0; block_num < numAreaBlocks; |
| 181 | ++block_num ) { |
| 182 | /* Process an address range block */ |
| 183 | struct MemoryBlock tempBlock; |
| 184 | unsigned long i; |
| 185 | |
| 186 | tempBlock.absStart = |
| 187 | (unsigned long)currentArea->xAdrRangeBlock[block_num].blockStart; |
| 188 | tempBlock.absEnd = |
| 189 | (unsigned long)currentArea->xAdrRangeBlock[block_num].blockEnd; |
| 190 | tempBlock.logicalStart = 0; |
| 191 | tempBlock.logicalEnd = 0; |
| 192 | printk("\n block %ld absStart=%016lx absEnd=%016lx", |
| 193 | block_num, tempBlock.absStart, |
| 194 | tempBlock.absEnd); |
| 195 | |
| 196 | for (i = 0; i < numSegmentBlocks; ++i) { |
| 197 | if (mb_array[i].absStart == |
| 198 | tempBlock.absStart) |
| 199 | break; |
| 200 | } |
| 201 | if (i == numSegmentBlocks) { |
| 202 | if (numSegmentBlocks == max_entries) |
| 203 | panic("iSeries_process_mainstore_vpd: too many memory blocks"); |
| 204 | mb_array[numSegmentBlocks] = tempBlock; |
| 205 | ++numSegmentBlocks; |
| 206 | } else |
| 207 | printk(" (duplicate)"); |
| 208 | } |
| 209 | printk("\n"); |
| 210 | } |
| 211 | existsBits <<= 1; |
| 212 | } |
| 213 | /* Now sort the blocks found into ascending sequence */ |
| 214 | if (numSegmentBlocks > 1) { |
| 215 | unsigned long m, n; |
| 216 | |
| 217 | for (m = 0; m < numSegmentBlocks - 1; ++m) { |
| 218 | for (n = numSegmentBlocks - 1; m < n; --n) { |
| 219 | if (mb_array[n].absStart < |
| 220 | mb_array[n-1].absStart) { |
| 221 | struct MemoryBlock tempBlock; |
| 222 | |
| 223 | tempBlock = mb_array[n]; |
| 224 | mb_array[n] = mb_array[n-1]; |
| 225 | mb_array[n-1] = tempBlock; |
| 226 | } |
| 227 | } |
| 228 | } |
| 229 | } |
| 230 | /* |
| 231 | * Assign "logical" addresses to each block. These |
| 232 | * addresses correspond to the hypervisor "bitmap" space. |
| 233 | * Convert all addresses into units of 256K chunks. |
| 234 | */ |
| 235 | { |
| 236 | unsigned long i, nextBitmapAddress; |
| 237 | |
| 238 | printk("ms_vpd: %ld sorted memory blocks\n", numSegmentBlocks); |
| 239 | nextBitmapAddress = 0; |
| 240 | for (i = 0; i < numSegmentBlocks; ++i) { |
| 241 | unsigned long length = mb_array[i].absEnd - |
| 242 | mb_array[i].absStart; |
| 243 | |
| 244 | mb_array[i].logicalStart = nextBitmapAddress; |
| 245 | mb_array[i].logicalEnd = nextBitmapAddress + length; |
| 246 | nextBitmapAddress += length; |
| 247 | printk(" Bitmap range: %016lx - %016lx\n" |
| 248 | " Absolute range: %016lx - %016lx\n", |
| 249 | mb_array[i].logicalStart, |
| 250 | mb_array[i].logicalEnd, |
| 251 | mb_array[i].absStart, mb_array[i].absEnd); |
| 252 | mb_array[i].absStart = addr_to_chunk(mb_array[i].absStart & |
| 253 | 0x000fffffffffffff); |
| 254 | mb_array[i].absEnd = addr_to_chunk(mb_array[i].absEnd & |
| 255 | 0x000fffffffffffff); |
| 256 | mb_array[i].logicalStart = |
| 257 | addr_to_chunk(mb_array[i].logicalStart); |
| 258 | mb_array[i].logicalEnd = addr_to_chunk(mb_array[i].logicalEnd); |
| 259 | } |
| 260 | } |
| 261 | |
| 262 | return numSegmentBlocks; |
| 263 | } |
| 264 | |
| 265 | static unsigned long iSeries_process_mainstore_vpd(struct MemoryBlock *mb_array, |
| 266 | unsigned long max_entries) |
| 267 | { |
| 268 | unsigned long i; |
| 269 | unsigned long mem_blocks = 0; |
| 270 | |
| 271 | if (cpu_has_feature(CPU_FTR_SLB)) |
| 272 | mem_blocks = iSeries_process_Regatta_mainstore_vpd(mb_array, |
| 273 | max_entries); |
| 274 | else |
| 275 | mem_blocks = iSeries_process_Condor_mainstore_vpd(mb_array, |
| 276 | max_entries); |
| 277 | |
| 278 | printk("Mainstore_VPD: numMemoryBlocks = %ld \n", mem_blocks); |
| 279 | for (i = 0; i < mem_blocks; ++i) { |
| 280 | printk("Mainstore_VPD: block %3ld logical chunks %016lx - %016lx\n" |
| 281 | " abs chunks %016lx - %016lx\n", |
| 282 | i, mb_array[i].logicalStart, mb_array[i].logicalEnd, |
| 283 | mb_array[i].absStart, mb_array[i].absEnd); |
| 284 | } |
| 285 | return mem_blocks; |
| 286 | } |
| 287 | |
| 288 | static void __init iSeries_get_cmdline(void) |
| 289 | { |
| 290 | char *p, *q; |
| 291 | |
| 292 | /* copy the command line parameter from the primary VSP */ |
| 293 | HvCallEvent_dmaToSp(cmd_line, 2 * 64* 1024, 256, |
| 294 | HvLpDma_Direction_RemoteToLocal); |
| 295 | |
| 296 | p = cmd_line; |
| 297 | q = cmd_line + 255; |
| 298 | while(p < q) { |
| 299 | if (!*p || *p == '\n') |
| 300 | break; |
| 301 | ++p; |
| 302 | } |
| 303 | *p = 0; |
| 304 | } |
| 305 | |
| 306 | static void __init iSeries_init_early(void) |
| 307 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 308 | DBG(" -> iSeries_init_early()\n"); |
| 309 | |
Stephen Rothwell | aed3135 | 2005-08-03 14:43:21 +1000 | [diff] [blame] | 310 | ppc64_firmware_features = FW_FEATURE_ISERIES; |
| 311 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | ppcdbg_initialize(); |
| 313 | |
Michael Ellerman | ba293ff | 2005-09-23 14:43:22 +1000 | [diff] [blame] | 314 | ppc64_interrupt_controller = IC_ISERIES; |
| 315 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 316 | #if defined(CONFIG_BLK_DEV_INITRD) |
| 317 | /* |
| 318 | * If the init RAM disk has been configured and there is |
| 319 | * a non-zero starting address for it, set it up |
| 320 | */ |
| 321 | if (naca.xRamDisk) { |
| 322 | initrd_start = (unsigned long)__va(naca.xRamDisk); |
| 323 | initrd_end = initrd_start + naca.xRamDiskSize * PAGE_SIZE; |
| 324 | initrd_below_start_ok = 1; // ramdisk in kernel space |
| 325 | ROOT_DEV = Root_RAM0; |
| 326 | if (((rd_size * 1024) / PAGE_SIZE) < naca.xRamDiskSize) |
| 327 | rd_size = (naca.xRamDiskSize * PAGE_SIZE) / 1024; |
| 328 | } else |
| 329 | #endif /* CONFIG_BLK_DEV_INITRD */ |
| 330 | { |
| 331 | /* ROOT_DEV = MKDEV(VIODASD_MAJOR, 1); */ |
| 332 | } |
| 333 | |
| 334 | iSeries_recal_tb = get_tb(); |
| 335 | iSeries_recal_titan = HvCallXm_loadTod(); |
| 336 | |
| 337 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 338 | * Initialize the hash table management pointers |
| 339 | */ |
| 340 | hpte_init_iSeries(); |
| 341 | |
| 342 | /* |
| 343 | * Initialize the DMA/TCE management |
| 344 | */ |
| 345 | iommu_init_early_iSeries(); |
| 346 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 347 | /* Initialize machine-dependency vectors */ |
| 348 | #ifdef CONFIG_SMP |
| 349 | smp_init_iSeries(); |
| 350 | #endif |
| 351 | if (itLpNaca.xPirEnvironMode == 0) |
| 352 | piranha_simulator = 1; |
| 353 | |
| 354 | /* Associate Lp Event Queue 0 with processor 0 */ |
| 355 | HvCallEvent_setLpEventQueueInterruptProc(0, 0); |
| 356 | |
| 357 | mf_init(); |
| 358 | mf_initialized = 1; |
| 359 | mb(); |
| 360 | |
| 361 | /* If we were passed an initrd, set the ROOT_DEV properly if the values |
| 362 | * look sensible. If not, clear initrd reference. |
| 363 | */ |
| 364 | #ifdef CONFIG_BLK_DEV_INITRD |
| 365 | if (initrd_start >= KERNELBASE && initrd_end >= KERNELBASE && |
| 366 | initrd_end > initrd_start) |
| 367 | ROOT_DEV = Root_RAM0; |
| 368 | else |
| 369 | initrd_start = initrd_end = 0; |
| 370 | #endif /* CONFIG_BLK_DEV_INITRD */ |
| 371 | |
| 372 | DBG(" <- iSeries_init_early()\n"); |
| 373 | } |
| 374 | |
Michael Ellerman | 56e97b7 | 2005-08-03 20:21:23 +1000 | [diff] [blame] | 375 | struct mschunks_map mschunks_map = { |
Michael Ellerman | 34c8f69 | 2005-08-03 20:21:23 +1000 | [diff] [blame] | 376 | /* XXX We don't use these, but Piranha might need them. */ |
| 377 | .chunk_size = MSCHUNKS_CHUNK_SIZE, |
| 378 | .chunk_shift = MSCHUNKS_CHUNK_SHIFT, |
| 379 | .chunk_mask = MSCHUNKS_OFFSET_MASK, |
| 380 | }; |
Michael Ellerman | 56e97b7 | 2005-08-03 20:21:23 +1000 | [diff] [blame] | 381 | EXPORT_SYMBOL(mschunks_map); |
Michael Ellerman | 34c8f69 | 2005-08-03 20:21:23 +1000 | [diff] [blame] | 382 | |
Michael Ellerman | 56e97b7 | 2005-08-03 20:21:23 +1000 | [diff] [blame] | 383 | void mschunks_alloc(unsigned long num_chunks) |
Michael Ellerman | 34c8f69 | 2005-08-03 20:21:23 +1000 | [diff] [blame] | 384 | { |
| 385 | klimit = _ALIGN(klimit, sizeof(u32)); |
Michael Ellerman | 56e97b7 | 2005-08-03 20:21:23 +1000 | [diff] [blame] | 386 | mschunks_map.mapping = (u32 *)klimit; |
Michael Ellerman | 34c8f69 | 2005-08-03 20:21:23 +1000 | [diff] [blame] | 387 | klimit += num_chunks * sizeof(u32); |
Michael Ellerman | 56e97b7 | 2005-08-03 20:21:23 +1000 | [diff] [blame] | 388 | mschunks_map.num_chunks = num_chunks; |
Michael Ellerman | 34c8f69 | 2005-08-03 20:21:23 +1000 | [diff] [blame] | 389 | } |
| 390 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 391 | /* |
| 392 | * The iSeries may have very large memories ( > 128 GB ) and a partition |
| 393 | * may get memory in "chunks" that may be anywhere in the 2**52 real |
| 394 | * address space. The chunks are 256K in size. To map this to the |
| 395 | * memory model Linux expects, the AS/400 specific code builds a |
| 396 | * translation table to translate what Linux thinks are "physical" |
| 397 | * addresses to the actual real addresses. This allows us to make |
| 398 | * it appear to Linux that we have contiguous memory starting at |
| 399 | * physical address zero while in fact this could be far from the truth. |
| 400 | * To avoid confusion, I'll let the words physical and/or real address |
| 401 | * apply to the Linux addresses while I'll use "absolute address" to |
| 402 | * refer to the actual hardware real address. |
| 403 | * |
| 404 | * build_iSeries_Memory_Map gets information from the Hypervisor and |
| 405 | * looks at the Main Store VPD to determine the absolute addresses |
| 406 | * of the memory that has been assigned to our partition and builds |
| 407 | * a table used to translate Linux's physical addresses to these |
| 408 | * absolute addresses. Absolute addresses are needed when |
| 409 | * communicating with the hypervisor (e.g. to build HPT entries) |
| 410 | */ |
| 411 | |
| 412 | static void __init build_iSeries_Memory_Map(void) |
| 413 | { |
| 414 | u32 loadAreaFirstChunk, loadAreaLastChunk, loadAreaSize; |
| 415 | u32 nextPhysChunk; |
| 416 | u32 hptFirstChunk, hptLastChunk, hptSizeChunks, hptSizePages; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 417 | u32 totalChunks,moreChunks; |
| 418 | u32 currChunk, thisChunk, absChunk; |
| 419 | u32 currDword; |
| 420 | u32 chunkBit; |
| 421 | u64 map; |
| 422 | struct MemoryBlock mb[32]; |
| 423 | unsigned long numMemoryBlocks, curBlock; |
| 424 | |
| 425 | /* Chunk size on iSeries is 256K bytes */ |
| 426 | totalChunks = (u32)HvLpConfig_getMsChunks(); |
Michael Ellerman | 56e97b7 | 2005-08-03 20:21:23 +1000 | [diff] [blame] | 427 | mschunks_alloc(totalChunks); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 428 | |
| 429 | /* |
| 430 | * Get absolute address of our load area |
| 431 | * and map it to physical address 0 |
| 432 | * This guarantees that the loadarea ends up at physical 0 |
| 433 | * otherwise, it might not be returned by PLIC as the first |
| 434 | * chunks |
| 435 | */ |
| 436 | |
| 437 | loadAreaFirstChunk = (u32)addr_to_chunk(itLpNaca.xLoadAreaAddr); |
| 438 | loadAreaSize = itLpNaca.xLoadAreaChunks; |
| 439 | |
| 440 | /* |
| 441 | * Only add the pages already mapped here. |
| 442 | * Otherwise we might add the hpt pages |
| 443 | * The rest of the pages of the load area |
| 444 | * aren't in the HPT yet and can still |
| 445 | * be assigned an arbitrary physical address |
| 446 | */ |
| 447 | if ((loadAreaSize * 64) > HvPagesToMap) |
| 448 | loadAreaSize = HvPagesToMap / 64; |
| 449 | |
| 450 | loadAreaLastChunk = loadAreaFirstChunk + loadAreaSize - 1; |
| 451 | |
| 452 | /* |
| 453 | * TODO Do we need to do something if the HPT is in the 64MB load area? |
| 454 | * This would be required if the itLpNaca.xLoadAreaChunks includes |
| 455 | * the HPT size |
| 456 | */ |
| 457 | |
| 458 | printk("Mapping load area - physical addr = 0000000000000000\n" |
| 459 | " absolute addr = %016lx\n", |
| 460 | chunk_to_addr(loadAreaFirstChunk)); |
| 461 | printk("Load area size %dK\n", loadAreaSize * 256); |
| 462 | |
| 463 | for (nextPhysChunk = 0; nextPhysChunk < loadAreaSize; ++nextPhysChunk) |
Michael Ellerman | 56e97b7 | 2005-08-03 20:21:23 +1000 | [diff] [blame] | 464 | mschunks_map.mapping[nextPhysChunk] = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 465 | loadAreaFirstChunk + nextPhysChunk; |
| 466 | |
| 467 | /* |
| 468 | * Get absolute address of our HPT and remember it so |
| 469 | * we won't map it to any physical address |
| 470 | */ |
| 471 | hptFirstChunk = (u32)addr_to_chunk(HvCallHpt_getHptAddress()); |
| 472 | hptSizePages = (u32)HvCallHpt_getHptPages(); |
Michael Ellerman | 34c8f69 | 2005-08-03 20:21:23 +1000 | [diff] [blame] | 473 | hptSizeChunks = hptSizePages >> (MSCHUNKS_CHUNK_SHIFT - PAGE_SHIFT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 474 | hptLastChunk = hptFirstChunk + hptSizeChunks - 1; |
| 475 | |
| 476 | printk("HPT absolute addr = %016lx, size = %dK\n", |
| 477 | chunk_to_addr(hptFirstChunk), hptSizeChunks * 256); |
| 478 | |
Stephen Rothwell | 3a5f8c5 | 2005-10-11 19:40:20 +1000 | [diff] [blame] | 479 | ppc64_pft_size = __ilog2(hptSizePages * PAGE_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 480 | |
| 481 | /* |
| 482 | * The actual hashed page table is in the hypervisor, |
| 483 | * we have no direct access |
| 484 | */ |
| 485 | htab_address = NULL; |
| 486 | |
| 487 | /* |
| 488 | * Determine if absolute memory has any |
| 489 | * holes so that we can interpret the |
| 490 | * access map we get back from the hypervisor |
| 491 | * correctly. |
| 492 | */ |
| 493 | numMemoryBlocks = iSeries_process_mainstore_vpd(mb, 32); |
| 494 | |
| 495 | /* |
| 496 | * Process the main store access map from the hypervisor |
| 497 | * to build up our physical -> absolute translation table |
| 498 | */ |
| 499 | curBlock = 0; |
| 500 | currChunk = 0; |
| 501 | currDword = 0; |
| 502 | moreChunks = totalChunks; |
| 503 | |
| 504 | while (moreChunks) { |
| 505 | map = HvCallSm_get64BitsOfAccessMap(itLpNaca.xLpIndex, |
| 506 | currDword); |
| 507 | thisChunk = currChunk; |
| 508 | while (map) { |
| 509 | chunkBit = map >> 63; |
| 510 | map <<= 1; |
| 511 | if (chunkBit) { |
| 512 | --moreChunks; |
| 513 | while (thisChunk >= mb[curBlock].logicalEnd) { |
| 514 | ++curBlock; |
| 515 | if (curBlock >= numMemoryBlocks) |
| 516 | panic("out of memory blocks"); |
| 517 | } |
| 518 | if (thisChunk < mb[curBlock].logicalStart) |
| 519 | panic("memory block error"); |
| 520 | |
| 521 | absChunk = mb[curBlock].absStart + |
| 522 | (thisChunk - mb[curBlock].logicalStart); |
| 523 | if (((absChunk < hptFirstChunk) || |
| 524 | (absChunk > hptLastChunk)) && |
| 525 | ((absChunk < loadAreaFirstChunk) || |
| 526 | (absChunk > loadAreaLastChunk))) { |
Michael Ellerman | 56e97b7 | 2005-08-03 20:21:23 +1000 | [diff] [blame] | 527 | mschunks_map.mapping[nextPhysChunk] = |
| 528 | absChunk; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 529 | ++nextPhysChunk; |
| 530 | } |
| 531 | } |
| 532 | ++thisChunk; |
| 533 | } |
| 534 | ++currDword; |
| 535 | currChunk += 64; |
| 536 | } |
| 537 | |
| 538 | /* |
| 539 | * main store size (in chunks) is |
| 540 | * totalChunks - hptSizeChunks |
| 541 | * which should be equal to |
| 542 | * nextPhysChunk |
| 543 | */ |
| 544 | systemcfg->physicalMemorySize = chunk_to_addr(nextPhysChunk); |
| 545 | } |
| 546 | |
| 547 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 548 | * Document me. |
| 549 | */ |
| 550 | static void __init iSeries_setup_arch(void) |
| 551 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 552 | unsigned procIx = get_paca()->lppaca.dyn_hv_phys_proc_index; |
| 553 | |
Michael Ellerman | 9f49758 | 2005-09-23 14:10:59 +1000 | [diff] [blame] | 554 | if (get_paca()->lppaca.shared_proc) { |
| 555 | ppc_md.idle_loop = iseries_shared_idle; |
| 556 | printk(KERN_INFO "Using shared processor idle loop\n"); |
| 557 | } else { |
| 558 | ppc_md.idle_loop = iseries_dedicated_idle; |
| 559 | printk(KERN_INFO "Using dedicated idle loop\n"); |
| 560 | } |
| 561 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 562 | /* Setup the Lp Event Queue */ |
Michael Ellerman | 512d31d | 2005-06-30 15:08:27 +1000 | [diff] [blame] | 563 | setup_hvlpevent_queue(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 564 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 565 | printk("Max logical processors = %d\n", |
| 566 | itVpdAreas.xSlicMaxLogicalProcs); |
| 567 | printk("Max physical processors = %d\n", |
| 568 | itVpdAreas.xSlicMaxPhysicalProcs); |
Michael Ellerman | 95b2938 | 2005-09-23 15:03:10 +1000 | [diff] [blame] | 569 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 570 | systemcfg->processor = xIoHriProcessorVpd[procIx].xPVR; |
| 571 | printk("Processor version = %x\n", systemcfg->processor); |
| 572 | } |
| 573 | |
Paul Mackerras | d8699e6 | 2005-10-20 17:02:01 +1000 | [diff] [blame] | 574 | static void iSeries_show_cpuinfo(struct seq_file *m) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 575 | { |
| 576 | seq_printf(m, "machine\t\t: 64-bit iSeries Logical Partition\n"); |
| 577 | } |
| 578 | |
| 579 | /* |
| 580 | * Document me. |
| 581 | * and Implement me. |
| 582 | */ |
| 583 | static int iSeries_get_irq(struct pt_regs *regs) |
| 584 | { |
| 585 | /* -2 means ignore this interrupt */ |
| 586 | return -2; |
| 587 | } |
| 588 | |
| 589 | /* |
| 590 | * Document me. |
| 591 | */ |
| 592 | static void iSeries_restart(char *cmd) |
| 593 | { |
| 594 | mf_reboot(); |
| 595 | } |
| 596 | |
| 597 | /* |
| 598 | * Document me. |
| 599 | */ |
| 600 | static void iSeries_power_off(void) |
| 601 | { |
| 602 | mf_power_off(); |
| 603 | } |
| 604 | |
| 605 | /* |
| 606 | * Document me. |
| 607 | */ |
| 608 | static void iSeries_halt(void) |
| 609 | { |
| 610 | mf_power_off(); |
| 611 | } |
| 612 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 613 | static void __init iSeries_progress(char * st, unsigned short code) |
| 614 | { |
| 615 | printk("Progress: [%04x] - %s\n", (unsigned)code, st); |
| 616 | if (!piranha_simulator && mf_initialized) { |
| 617 | if (code != 0xffff) |
| 618 | mf_display_progress(code); |
| 619 | else |
| 620 | mf_clear_src(); |
| 621 | } |
| 622 | } |
| 623 | |
| 624 | static void __init iSeries_fixup_klimit(void) |
| 625 | { |
| 626 | /* |
| 627 | * Change klimit to take into account any ram disk |
| 628 | * that may be included |
| 629 | */ |
| 630 | if (naca.xRamDisk) |
| 631 | klimit = KERNELBASE + (u64)naca.xRamDisk + |
| 632 | (naca.xRamDiskSize * PAGE_SIZE); |
| 633 | else { |
| 634 | /* |
| 635 | * No ram disk was included - check and see if there |
| 636 | * was an embedded system map. Change klimit to take |
| 637 | * into account any embedded system map |
| 638 | */ |
| 639 | if (embedded_sysmap_end) |
| 640 | klimit = KERNELBASE + ((embedded_sysmap_end + 4095) & |
| 641 | 0xfffffffffffff000); |
| 642 | } |
| 643 | } |
| 644 | |
| 645 | static int __init iSeries_src_init(void) |
| 646 | { |
| 647 | /* clear the progress line */ |
| 648 | ppc_md.progress(" ", 0xffff); |
| 649 | return 0; |
| 650 | } |
| 651 | |
| 652 | late_initcall(iSeries_src_init); |
| 653 | |
Michael Ellerman | d200903 | 2005-07-07 17:56:29 -0700 | [diff] [blame] | 654 | static inline void process_iSeries_events(void) |
| 655 | { |
| 656 | asm volatile ("li 0,0x5555; sc" : : : "r0", "r3"); |
| 657 | } |
| 658 | |
| 659 | static void yield_shared_processor(void) |
| 660 | { |
| 661 | unsigned long tb; |
Michael Ellerman | d200903 | 2005-07-07 17:56:29 -0700 | [diff] [blame] | 662 | |
| 663 | HvCall_setEnabledInterrupts(HvCall_MaskIPI | |
| 664 | HvCall_MaskLpEvent | |
| 665 | HvCall_MaskLpProd | |
| 666 | HvCall_MaskTimeout); |
| 667 | |
| 668 | tb = get_tb(); |
| 669 | /* Compute future tb value when yield should expire */ |
| 670 | HvCall_yieldProcessor(HvCall_YieldTimed, tb+tb_ticks_per_jiffy); |
| 671 | |
Michael Ellerman | d200903 | 2005-07-07 17:56:29 -0700 | [diff] [blame] | 672 | /* |
| 673 | * The decrementer stops during the yield. Force a fake decrementer |
| 674 | * here and let the timer_interrupt code sort out the actual time. |
| 675 | */ |
| 676 | get_paca()->lppaca.int_dword.fields.decr_int = 1; |
| 677 | process_iSeries_events(); |
| 678 | } |
| 679 | |
Paul Mackerras | 143a1de | 2005-10-19 23:11:21 +1000 | [diff] [blame] | 680 | static void iseries_shared_idle(void) |
Michael Ellerman | d200903 | 2005-07-07 17:56:29 -0700 | [diff] [blame] | 681 | { |
Anton Blanchard | 3c57bb9 | 2005-07-07 17:56:32 -0700 | [diff] [blame] | 682 | while (1) { |
| 683 | while (!need_resched() && !hvlpevent_is_pending()) { |
| 684 | local_irq_disable(); |
| 685 | ppc64_runlatch_off(); |
| 686 | |
| 687 | /* Recheck with irqs off */ |
| 688 | if (!need_resched() && !hvlpevent_is_pending()) |
| 689 | yield_shared_processor(); |
| 690 | |
| 691 | HMT_medium(); |
| 692 | local_irq_enable(); |
| 693 | } |
| 694 | |
| 695 | ppc64_runlatch_on(); |
| 696 | |
| 697 | if (hvlpevent_is_pending()) |
| 698 | process_iSeries_events(); |
| 699 | |
| 700 | schedule(); |
| 701 | } |
Anton Blanchard | 3c57bb9 | 2005-07-07 17:56:32 -0700 | [diff] [blame] | 702 | } |
| 703 | |
Paul Mackerras | 143a1de | 2005-10-19 23:11:21 +1000 | [diff] [blame] | 704 | static void iseries_dedicated_idle(void) |
Anton Blanchard | 3c57bb9 | 2005-07-07 17:56:32 -0700 | [diff] [blame] | 705 | { |
Michael Ellerman | d200903 | 2005-07-07 17:56:29 -0700 | [diff] [blame] | 706 | long oldval; |
| 707 | |
Michael Ellerman | d200903 | 2005-07-07 17:56:29 -0700 | [diff] [blame] | 708 | while (1) { |
Anton Blanchard | 3c57bb9 | 2005-07-07 17:56:32 -0700 | [diff] [blame] | 709 | oldval = test_and_clear_thread_flag(TIF_NEED_RESCHED); |
Michael Ellerman | d200903 | 2005-07-07 17:56:29 -0700 | [diff] [blame] | 710 | |
Anton Blanchard | 3c57bb9 | 2005-07-07 17:56:32 -0700 | [diff] [blame] | 711 | if (!oldval) { |
| 712 | set_thread_flag(TIF_POLLING_NRFLAG); |
Michael Ellerman | d200903 | 2005-07-07 17:56:29 -0700 | [diff] [blame] | 713 | |
Anton Blanchard | 3c57bb9 | 2005-07-07 17:56:32 -0700 | [diff] [blame] | 714 | while (!need_resched()) { |
| 715 | ppc64_runlatch_off(); |
| 716 | HMT_low(); |
| 717 | |
| 718 | if (hvlpevent_is_pending()) { |
Michael Ellerman | d200903 | 2005-07-07 17:56:29 -0700 | [diff] [blame] | 719 | HMT_medium(); |
Anton Blanchard | 3c57bb9 | 2005-07-07 17:56:32 -0700 | [diff] [blame] | 720 | ppc64_runlatch_on(); |
| 721 | process_iSeries_events(); |
Michael Ellerman | d200903 | 2005-07-07 17:56:29 -0700 | [diff] [blame] | 722 | } |
Michael Ellerman | d200903 | 2005-07-07 17:56:29 -0700 | [diff] [blame] | 723 | } |
Anton Blanchard | 3c57bb9 | 2005-07-07 17:56:32 -0700 | [diff] [blame] | 724 | |
| 725 | HMT_medium(); |
| 726 | clear_thread_flag(TIF_POLLING_NRFLAG); |
| 727 | } else { |
| 728 | set_need_resched(); |
Michael Ellerman | d200903 | 2005-07-07 17:56:29 -0700 | [diff] [blame] | 729 | } |
| 730 | |
| 731 | ppc64_runlatch_on(); |
| 732 | schedule(); |
Michael Ellerman | d200903 | 2005-07-07 17:56:29 -0700 | [diff] [blame] | 733 | } |
Michael Ellerman | d200903 | 2005-07-07 17:56:29 -0700 | [diff] [blame] | 734 | } |
| 735 | |
Stephen Rothwell | 145d01e | 2005-06-21 17:15:52 -0700 | [diff] [blame] | 736 | #ifndef CONFIG_PCI |
| 737 | void __init iSeries_init_IRQ(void) { } |
| 738 | #endif |
| 739 | |
Michael Ellerman | 4762713 | 2005-09-23 14:59:04 +1000 | [diff] [blame] | 740 | static int __init iseries_probe(int platform) |
| 741 | { |
| 742 | return PLATFORM_ISERIES_LPAR == platform; |
| 743 | } |
| 744 | |
Michael Ellerman | 9f49758 | 2005-09-23 14:10:59 +1000 | [diff] [blame] | 745 | struct machdep_calls __initdata iseries_md = { |
| 746 | .setup_arch = iSeries_setup_arch, |
Paul Mackerras | d8699e6 | 2005-10-20 17:02:01 +1000 | [diff] [blame] | 747 | .show_cpuinfo = iSeries_show_cpuinfo, |
Michael Ellerman | 9f49758 | 2005-09-23 14:10:59 +1000 | [diff] [blame] | 748 | .init_IRQ = iSeries_init_IRQ, |
| 749 | .get_irq = iSeries_get_irq, |
| 750 | .init_early = iSeries_init_early, |
| 751 | .pcibios_fixup = iSeries_pci_final_fixup, |
| 752 | .restart = iSeries_restart, |
| 753 | .power_off = iSeries_power_off, |
| 754 | .halt = iSeries_halt, |
| 755 | .get_boot_time = iSeries_get_boot_time, |
| 756 | .set_rtc_time = iSeries_set_rtc_time, |
| 757 | .get_rtc_time = iSeries_get_rtc_time, |
Michael Ellerman | 95b2938 | 2005-09-23 15:03:10 +1000 | [diff] [blame] | 758 | .calibrate_decr = generic_calibrate_decr, |
Michael Ellerman | 9f49758 | 2005-09-23 14:10:59 +1000 | [diff] [blame] | 759 | .progress = iSeries_progress, |
Michael Ellerman | 4762713 | 2005-09-23 14:59:04 +1000 | [diff] [blame] | 760 | .probe = iseries_probe, |
Michael Ellerman | 9f49758 | 2005-09-23 14:10:59 +1000 | [diff] [blame] | 761 | /* XXX Implement enable_pmcs for iSeries */ |
| 762 | }; |
| 763 | |
Michael Ellerman | c0a5949 | 2005-09-23 14:56:09 +1000 | [diff] [blame] | 764 | struct blob { |
| 765 | unsigned char data[PAGE_SIZE]; |
| 766 | unsigned long next; |
| 767 | }; |
| 768 | |
| 769 | struct iseries_flat_dt { |
| 770 | struct boot_param_header header; |
| 771 | u64 reserve_map[2]; |
| 772 | struct blob dt; |
| 773 | struct blob strings; |
| 774 | }; |
| 775 | |
| 776 | struct iseries_flat_dt iseries_dt; |
| 777 | |
| 778 | void dt_init(struct iseries_flat_dt *dt) |
| 779 | { |
| 780 | dt->header.off_mem_rsvmap = |
| 781 | offsetof(struct iseries_flat_dt, reserve_map); |
| 782 | dt->header.off_dt_struct = offsetof(struct iseries_flat_dt, dt); |
| 783 | dt->header.off_dt_strings = offsetof(struct iseries_flat_dt, strings); |
| 784 | dt->header.totalsize = sizeof(struct iseries_flat_dt); |
| 785 | dt->header.dt_strings_size = sizeof(struct blob); |
| 786 | |
| 787 | /* There is no notion of hardware cpu id on iSeries */ |
| 788 | dt->header.boot_cpuid_phys = smp_processor_id(); |
| 789 | |
| 790 | dt->dt.next = (unsigned long)&dt->dt.data; |
| 791 | dt->strings.next = (unsigned long)&dt->strings.data; |
| 792 | |
| 793 | dt->header.magic = OF_DT_HEADER; |
| 794 | dt->header.version = 0x10; |
| 795 | dt->header.last_comp_version = 0x10; |
| 796 | |
| 797 | dt->reserve_map[0] = 0; |
| 798 | dt->reserve_map[1] = 0; |
| 799 | } |
| 800 | |
| 801 | void dt_check_blob(struct blob *b) |
| 802 | { |
| 803 | if (b->next >= (unsigned long)&b->next) { |
| 804 | DBG("Ran out of space in flat device tree blob!\n"); |
| 805 | BUG(); |
| 806 | } |
| 807 | } |
| 808 | |
| 809 | void dt_push_u32(struct iseries_flat_dt *dt, u32 value) |
| 810 | { |
| 811 | *((u32*)dt->dt.next) = value; |
| 812 | dt->dt.next += sizeof(u32); |
| 813 | |
| 814 | dt_check_blob(&dt->dt); |
| 815 | } |
| 816 | |
| 817 | void dt_push_u64(struct iseries_flat_dt *dt, u64 value) |
| 818 | { |
| 819 | *((u64*)dt->dt.next) = value; |
| 820 | dt->dt.next += sizeof(u64); |
| 821 | |
| 822 | dt_check_blob(&dt->dt); |
| 823 | } |
| 824 | |
| 825 | unsigned long dt_push_bytes(struct blob *blob, char *data, int len) |
| 826 | { |
| 827 | unsigned long start = blob->next - (unsigned long)blob->data; |
| 828 | |
| 829 | memcpy((char *)blob->next, data, len); |
| 830 | blob->next = _ALIGN(blob->next + len, 4); |
| 831 | |
| 832 | dt_check_blob(blob); |
| 833 | |
| 834 | return start; |
| 835 | } |
| 836 | |
| 837 | void dt_start_node(struct iseries_flat_dt *dt, char *name) |
| 838 | { |
| 839 | dt_push_u32(dt, OF_DT_BEGIN_NODE); |
| 840 | dt_push_bytes(&dt->dt, name, strlen(name) + 1); |
| 841 | } |
| 842 | |
| 843 | #define dt_end_node(dt) dt_push_u32(dt, OF_DT_END_NODE) |
| 844 | |
| 845 | void dt_prop(struct iseries_flat_dt *dt, char *name, char *data, int len) |
| 846 | { |
| 847 | unsigned long offset; |
| 848 | |
| 849 | dt_push_u32(dt, OF_DT_PROP); |
| 850 | |
| 851 | /* Length of the data */ |
| 852 | dt_push_u32(dt, len); |
| 853 | |
| 854 | /* Put the property name in the string blob. */ |
| 855 | offset = dt_push_bytes(&dt->strings, name, strlen(name) + 1); |
| 856 | |
| 857 | /* The offset of the properties name in the string blob. */ |
| 858 | dt_push_u32(dt, (u32)offset); |
| 859 | |
| 860 | /* The actual data. */ |
| 861 | dt_push_bytes(&dt->dt, data, len); |
| 862 | } |
| 863 | |
| 864 | void dt_prop_str(struct iseries_flat_dt *dt, char *name, char *data) |
| 865 | { |
| 866 | dt_prop(dt, name, data, strlen(data) + 1); /* + 1 for NULL */ |
| 867 | } |
| 868 | |
| 869 | void dt_prop_u32(struct iseries_flat_dt *dt, char *name, u32 data) |
| 870 | { |
| 871 | dt_prop(dt, name, (char *)&data, sizeof(u32)); |
| 872 | } |
| 873 | |
| 874 | void dt_prop_u64(struct iseries_flat_dt *dt, char *name, u64 data) |
| 875 | { |
| 876 | dt_prop(dt, name, (char *)&data, sizeof(u64)); |
| 877 | } |
| 878 | |
| 879 | void dt_prop_u64_list(struct iseries_flat_dt *dt, char *name, u64 *data, int n) |
| 880 | { |
| 881 | dt_prop(dt, name, (char *)data, sizeof(u64) * n); |
| 882 | } |
| 883 | |
| 884 | void dt_prop_empty(struct iseries_flat_dt *dt, char *name) |
| 885 | { |
| 886 | dt_prop(dt, name, NULL, 0); |
| 887 | } |
| 888 | |
Michael Ellerman | 95b2938 | 2005-09-23 15:03:10 +1000 | [diff] [blame] | 889 | void dt_cpus(struct iseries_flat_dt *dt) |
| 890 | { |
| 891 | unsigned char buf[32]; |
| 892 | unsigned char *p; |
| 893 | unsigned int i, index; |
| 894 | struct IoHriProcessorVpd *d; |
| 895 | |
| 896 | /* yuck */ |
| 897 | snprintf(buf, 32, "PowerPC,%s", cur_cpu_spec->cpu_name); |
| 898 | p = strchr(buf, ' '); |
| 899 | if (!p) p = buf + strlen(buf); |
| 900 | |
| 901 | dt_start_node(dt, "cpus"); |
| 902 | dt_prop_u32(dt, "#address-cells", 1); |
| 903 | dt_prop_u32(dt, "#size-cells", 0); |
| 904 | |
| 905 | for (i = 0; i < NR_CPUS; i++) { |
| 906 | if (paca[i].lppaca.dyn_proc_status >= 2) |
| 907 | continue; |
| 908 | |
| 909 | snprintf(p, 32 - (p - buf), "@%d", i); |
| 910 | dt_start_node(dt, buf); |
| 911 | |
| 912 | dt_prop_str(dt, "device_type", "cpu"); |
| 913 | |
| 914 | index = paca[i].lppaca.dyn_hv_phys_proc_index; |
| 915 | d = &xIoHriProcessorVpd[index]; |
| 916 | |
| 917 | dt_prop_u32(dt, "i-cache-size", d->xInstCacheSize * 1024); |
| 918 | dt_prop_u32(dt, "i-cache-line-size", d->xInstCacheOperandSize); |
| 919 | |
| 920 | dt_prop_u32(dt, "d-cache-size", d->xDataL1CacheSizeKB * 1024); |
| 921 | dt_prop_u32(dt, "d-cache-line-size", d->xDataCacheOperandSize); |
| 922 | |
| 923 | /* magic conversions to Hz copied from old code */ |
| 924 | dt_prop_u32(dt, "clock-frequency", |
| 925 | ((1UL << 34) * 1000000) / d->xProcFreq); |
| 926 | dt_prop_u32(dt, "timebase-frequency", |
| 927 | ((1UL << 32) * 1000000) / d->xTimeBaseFreq); |
| 928 | |
| 929 | dt_prop_u32(dt, "reg", i); |
| 930 | |
Michael Ellerman | 95b2938 | 2005-09-23 15:03:10 +1000 | [diff] [blame] | 931 | dt_end_node(dt); |
| 932 | } |
| 933 | |
| 934 | dt_end_node(dt); |
| 935 | } |
| 936 | |
Michael Ellerman | c0a5949 | 2005-09-23 14:56:09 +1000 | [diff] [blame] | 937 | void build_flat_dt(struct iseries_flat_dt *dt) |
| 938 | { |
Michael Ellerman | 3ab4240 | 2005-09-23 15:00:20 +1000 | [diff] [blame] | 939 | u64 tmp[2]; |
| 940 | |
Michael Ellerman | c0a5949 | 2005-09-23 14:56:09 +1000 | [diff] [blame] | 941 | dt_init(dt); |
| 942 | |
| 943 | dt_start_node(dt, ""); |
Michael Ellerman | 3ab4240 | 2005-09-23 15:00:20 +1000 | [diff] [blame] | 944 | |
| 945 | dt_prop_u32(dt, "#address-cells", 2); |
| 946 | dt_prop_u32(dt, "#size-cells", 2); |
| 947 | |
| 948 | /* /memory */ |
| 949 | dt_start_node(dt, "memory@0"); |
| 950 | dt_prop_str(dt, "name", "memory"); |
| 951 | dt_prop_str(dt, "device_type", "memory"); |
| 952 | tmp[0] = 0; |
| 953 | tmp[1] = systemcfg->physicalMemorySize; |
| 954 | dt_prop_u64_list(dt, "reg", tmp, 2); |
| 955 | dt_end_node(dt); |
| 956 | |
Michael Ellerman | 47db360 | 2005-09-23 15:01:49 +1000 | [diff] [blame] | 957 | /* /chosen */ |
| 958 | dt_start_node(dt, "chosen"); |
| 959 | dt_prop_u32(dt, "linux,platform", PLATFORM_ISERIES_LPAR); |
Stephen Rothwell | bec7c45 | 2005-11-01 11:45:19 +1100 | [diff] [blame] | 960 | if (cmd_mem_limit) |
| 961 | dt_prop_u64(dt, "linux,memory-limit", cmd_mem_limit); |
Michael Ellerman | 47db360 | 2005-09-23 15:01:49 +1000 | [diff] [blame] | 962 | dt_end_node(dt); |
| 963 | |
Michael Ellerman | 95b2938 | 2005-09-23 15:03:10 +1000 | [diff] [blame] | 964 | dt_cpus(dt); |
| 965 | |
Michael Ellerman | c0a5949 | 2005-09-23 14:56:09 +1000 | [diff] [blame] | 966 | dt_end_node(dt); |
| 967 | |
| 968 | dt_push_u32(dt, OF_DT_END); |
| 969 | } |
| 970 | |
Michael Ellerman | 4762713 | 2005-09-23 14:59:04 +1000 | [diff] [blame] | 971 | void * __init iSeries_early_setup(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 972 | { |
| 973 | iSeries_fixup_klimit(); |
Michael Ellerman | c0a5949 | 2005-09-23 14:56:09 +1000 | [diff] [blame] | 974 | |
Michael Ellerman | 4762713 | 2005-09-23 14:59:04 +1000 | [diff] [blame] | 975 | /* |
| 976 | * Initialize the table which translate Linux physical addresses to |
| 977 | * AS/400 absolute addresses |
| 978 | */ |
| 979 | build_iSeries_Memory_Map(); |
| 980 | |
Stephen Rothwell | bec7c45 | 2005-11-01 11:45:19 +1100 | [diff] [blame] | 981 | iSeries_get_cmdline(); |
| 982 | |
| 983 | /* Save unparsed command line copy for /proc/cmdline */ |
| 984 | strlcpy(saved_command_line, cmd_line, COMMAND_LINE_SIZE); |
| 985 | |
| 986 | /* Parse early parameters, in particular mem=x */ |
| 987 | parse_early_param(); |
| 988 | |
Michael Ellerman | c0a5949 | 2005-09-23 14:56:09 +1000 | [diff] [blame] | 989 | build_flat_dt(&iseries_dt); |
Michael Ellerman | 4762713 | 2005-09-23 14:59:04 +1000 | [diff] [blame] | 990 | |
| 991 | return (void *) __pa(&iseries_dt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 992 | } |
Stephen Rothwell | bec7c45 | 2005-11-01 11:45:19 +1100 | [diff] [blame] | 993 | |
| 994 | /* |
| 995 | * On iSeries we just parse the mem=X option from the command line. |
| 996 | * On pSeries it's a bit more complicated, see prom_init_mem() |
| 997 | */ |
| 998 | static int __init early_parsemem(char *p) |
| 999 | { |
| 1000 | if (p) |
| 1001 | cmd_mem_limit = ALIGN(memparse(p, &p), PAGE_SIZE); |
| 1002 | return 0; |
| 1003 | } |
| 1004 | early_param("mem", early_parsemem); |