Pull esi-support into release branch
[linux-2.6] / arch / powerpc / platforms / iseries / setup.c
1 /*
2  *    Copyright (c) 2000 Mike Corrigan <mikejc@us.ibm.com>
3  *    Copyright (c) 1999-2000 Grant Erickson <grant@lcse.umn.edu>
4  *
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/init.h>
20 #include <linux/threads.h>
21 #include <linux/smp.h>
22 #include <linux/param.h>
23 #include <linux/string.h>
24 #include <linux/initrd.h>
25 #include <linux/seq_file.h>
26 #include <linux/kdev_t.h>
27 #include <linux/major.h>
28 #include <linux/root_dev.h>
29 #include <linux/kernel.h>
30
31 #include <asm/processor.h>
32 #include <asm/machdep.h>
33 #include <asm/page.h>
34 #include <asm/mmu.h>
35 #include <asm/pgtable.h>
36 #include <asm/mmu_context.h>
37 #include <asm/cputable.h>
38 #include <asm/sections.h>
39 #include <asm/iommu.h>
40 #include <asm/firmware.h>
41 #include <asm/system.h>
42 #include <asm/time.h>
43 #include <asm/paca.h>
44 #include <asm/cache.h>
45 #include <asm/sections.h>
46 #include <asm/abs_addr.h>
47 #include <asm/iseries/hv_lp_config.h>
48 #include <asm/iseries/hv_call_event.h>
49 #include <asm/iseries/hv_call_xm.h>
50 #include <asm/iseries/it_lp_queue.h>
51 #include <asm/iseries/mf.h>
52 #include <asm/iseries/hv_lp_event.h>
53 #include <asm/iseries/lpar_map.h>
54 #include <asm/udbg.h>
55 #include <asm/irq.h>
56
57 #include "naca.h"
58 #include "setup.h"
59 #include "irq.h"
60 #include "vpd_areas.h"
61 #include "processor_vpd.h"
62 #include "main_store.h"
63 #include "call_sm.h"
64 #include "call_hpt.h"
65
66 #ifdef DEBUG
67 #define DBG(fmt...) udbg_printf(fmt)
68 #else
69 #define DBG(fmt...)
70 #endif
71
72 /* Function Prototypes */
73 static unsigned long build_iSeries_Memory_Map(void);
74 static void iseries_shared_idle(void);
75 static void iseries_dedicated_idle(void);
76 #ifdef CONFIG_PCI
77 extern void iSeries_pci_final_fixup(void);
78 #else
79 static void iSeries_pci_final_fixup(void) { }
80 #endif
81
82 extern int rd_size;             /* Defined in drivers/block/rd.c */
83
84 extern unsigned long iSeries_recal_tb;
85 extern unsigned long iSeries_recal_titan;
86
87 struct MemoryBlock {
88         unsigned long absStart;
89         unsigned long absEnd;
90         unsigned long logicalStart;
91         unsigned long logicalEnd;
92 };
93
94 /*
95  * Process the main store vpd to determine where the holes in memory are
96  * and return the number of physical blocks and fill in the array of
97  * block data.
98  */
99 static unsigned long iSeries_process_Condor_mainstore_vpd(
100                 struct MemoryBlock *mb_array, unsigned long max_entries)
101 {
102         unsigned long holeFirstChunk, holeSizeChunks;
103         unsigned long numMemoryBlocks = 1;
104         struct IoHriMainStoreSegment4 *msVpd =
105                 (struct IoHriMainStoreSegment4 *)xMsVpd;
106         unsigned long holeStart = msVpd->nonInterleavedBlocksStartAdr;
107         unsigned long holeEnd = msVpd->nonInterleavedBlocksEndAdr;
108         unsigned long holeSize = holeEnd - holeStart;
109
110         printk("Mainstore_VPD: Condor\n");
111         /*
112          * Determine if absolute memory has any
113          * holes so that we can interpret the
114          * access map we get back from the hypervisor
115          * correctly.
116          */
117         mb_array[0].logicalStart = 0;
118         mb_array[0].logicalEnd = 0x100000000;
119         mb_array[0].absStart = 0;
120         mb_array[0].absEnd = 0x100000000;
121
122         if (holeSize) {
123                 numMemoryBlocks = 2;
124                 holeStart = holeStart & 0x000fffffffffffff;
125                 holeStart = addr_to_chunk(holeStart);
126                 holeFirstChunk = holeStart;
127                 holeSize = addr_to_chunk(holeSize);
128                 holeSizeChunks = holeSize;
129                 printk( "Main store hole: start chunk = %0lx, size = %0lx chunks\n",
130                                 holeFirstChunk, holeSizeChunks );
131                 mb_array[0].logicalEnd = holeFirstChunk;
132                 mb_array[0].absEnd = holeFirstChunk;
133                 mb_array[1].logicalStart = holeFirstChunk;
134                 mb_array[1].logicalEnd = 0x100000000 - holeSizeChunks;
135                 mb_array[1].absStart = holeFirstChunk + holeSizeChunks;
136                 mb_array[1].absEnd = 0x100000000;
137         }
138         return numMemoryBlocks;
139 }
140
141 #define MaxSegmentAreas                 32
142 #define MaxSegmentAdrRangeBlocks        128
143 #define MaxAreaRangeBlocks              4
144
145 static unsigned long iSeries_process_Regatta_mainstore_vpd(
146                 struct MemoryBlock *mb_array, unsigned long max_entries)
147 {
148         struct IoHriMainStoreSegment5 *msVpdP =
149                 (struct IoHriMainStoreSegment5 *)xMsVpd;
150         unsigned long numSegmentBlocks = 0;
151         u32 existsBits = msVpdP->msAreaExists;
152         unsigned long area_num;
153
154         printk("Mainstore_VPD: Regatta\n");
155
156         for (area_num = 0; area_num < MaxSegmentAreas; ++area_num ) {
157                 unsigned long numAreaBlocks;
158                 struct IoHriMainStoreArea4 *currentArea;
159
160                 if (existsBits & 0x80000000) {
161                         unsigned long block_num;
162
163                         currentArea = &msVpdP->msAreaArray[area_num];
164                         numAreaBlocks = currentArea->numAdrRangeBlocks;
165                         printk("ms_vpd: processing area %2ld  blocks=%ld",
166                                         area_num, numAreaBlocks);
167                         for (block_num = 0; block_num < numAreaBlocks;
168                                         ++block_num ) {
169                                 /* Process an address range block */
170                                 struct MemoryBlock tempBlock;
171                                 unsigned long i;
172
173                                 tempBlock.absStart =
174                                         (unsigned long)currentArea->xAdrRangeBlock[block_num].blockStart;
175                                 tempBlock.absEnd =
176                                         (unsigned long)currentArea->xAdrRangeBlock[block_num].blockEnd;
177                                 tempBlock.logicalStart = 0;
178                                 tempBlock.logicalEnd   = 0;
179                                 printk("\n          block %ld absStart=%016lx absEnd=%016lx",
180                                                 block_num, tempBlock.absStart,
181                                                 tempBlock.absEnd);
182
183                                 for (i = 0; i < numSegmentBlocks; ++i) {
184                                         if (mb_array[i].absStart ==
185                                                         tempBlock.absStart)
186                                                 break;
187                                 }
188                                 if (i == numSegmentBlocks) {
189                                         if (numSegmentBlocks == max_entries)
190                                                 panic("iSeries_process_mainstore_vpd: too many memory blocks");
191                                         mb_array[numSegmentBlocks] = tempBlock;
192                                         ++numSegmentBlocks;
193                                 } else
194                                         printk(" (duplicate)");
195                         }
196                         printk("\n");
197                 }
198                 existsBits <<= 1;
199         }
200         /* Now sort the blocks found into ascending sequence */
201         if (numSegmentBlocks > 1) {
202                 unsigned long m, n;
203
204                 for (m = 0; m < numSegmentBlocks - 1; ++m) {
205                         for (n = numSegmentBlocks - 1; m < n; --n) {
206                                 if (mb_array[n].absStart <
207                                                 mb_array[n-1].absStart) {
208                                         struct MemoryBlock tempBlock;
209
210                                         tempBlock = mb_array[n];
211                                         mb_array[n] = mb_array[n-1];
212                                         mb_array[n-1] = tempBlock;
213                                 }
214                         }
215                 }
216         }
217         /*
218          * Assign "logical" addresses to each block.  These
219          * addresses correspond to the hypervisor "bitmap" space.
220          * Convert all addresses into units of 256K chunks.
221          */
222         {
223         unsigned long i, nextBitmapAddress;
224
225         printk("ms_vpd: %ld sorted memory blocks\n", numSegmentBlocks);
226         nextBitmapAddress = 0;
227         for (i = 0; i < numSegmentBlocks; ++i) {
228                 unsigned long length = mb_array[i].absEnd -
229                         mb_array[i].absStart;
230
231                 mb_array[i].logicalStart = nextBitmapAddress;
232                 mb_array[i].logicalEnd = nextBitmapAddress + length;
233                 nextBitmapAddress += length;
234                 printk("          Bitmap range: %016lx - %016lx\n"
235                                 "        Absolute range: %016lx - %016lx\n",
236                                 mb_array[i].logicalStart,
237                                 mb_array[i].logicalEnd,
238                                 mb_array[i].absStart, mb_array[i].absEnd);
239                 mb_array[i].absStart = addr_to_chunk(mb_array[i].absStart &
240                                 0x000fffffffffffff);
241                 mb_array[i].absEnd = addr_to_chunk(mb_array[i].absEnd &
242                                 0x000fffffffffffff);
243                 mb_array[i].logicalStart =
244                         addr_to_chunk(mb_array[i].logicalStart);
245                 mb_array[i].logicalEnd = addr_to_chunk(mb_array[i].logicalEnd);
246         }
247         }
248
249         return numSegmentBlocks;
250 }
251
252 static unsigned long iSeries_process_mainstore_vpd(struct MemoryBlock *mb_array,
253                 unsigned long max_entries)
254 {
255         unsigned long i;
256         unsigned long mem_blocks = 0;
257
258         if (cpu_has_feature(CPU_FTR_SLB))
259                 mem_blocks = iSeries_process_Regatta_mainstore_vpd(mb_array,
260                                 max_entries);
261         else
262                 mem_blocks = iSeries_process_Condor_mainstore_vpd(mb_array,
263                                 max_entries);
264
265         printk("Mainstore_VPD: numMemoryBlocks = %ld \n", mem_blocks);
266         for (i = 0; i < mem_blocks; ++i) {
267                 printk("Mainstore_VPD: block %3ld logical chunks %016lx - %016lx\n"
268                        "                             abs chunks %016lx - %016lx\n",
269                         i, mb_array[i].logicalStart, mb_array[i].logicalEnd,
270                         mb_array[i].absStart, mb_array[i].absEnd);
271         }
272         return mem_blocks;
273 }
274
275 static void __init iSeries_get_cmdline(void)
276 {
277         char *p, *q;
278
279         /* copy the command line parameter from the primary VSP  */
280         HvCallEvent_dmaToSp(cmd_line, 2 * 64* 1024, 256,
281                         HvLpDma_Direction_RemoteToLocal);
282
283         p = cmd_line;
284         q = cmd_line + 255;
285         while(p < q) {
286                 if (!*p || *p == '\n')
287                         break;
288                 ++p;
289         }
290         *p = 0;
291 }
292
293 static void __init iSeries_init_early(void)
294 {
295         DBG(" -> iSeries_init_early()\n");
296
297 #if defined(CONFIG_BLK_DEV_INITRD)
298         /*
299          * If the init RAM disk has been configured and there is
300          * a non-zero starting address for it, set it up
301          */
302         if (naca.xRamDisk) {
303                 initrd_start = (unsigned long)__va(naca.xRamDisk);
304                 initrd_end = initrd_start + naca.xRamDiskSize * HW_PAGE_SIZE;
305                 initrd_below_start_ok = 1;      // ramdisk in kernel space
306                 ROOT_DEV = Root_RAM0;
307                 if (((rd_size * 1024) / HW_PAGE_SIZE) < naca.xRamDiskSize)
308                         rd_size = (naca.xRamDiskSize * HW_PAGE_SIZE) / 1024;
309         } else
310 #endif /* CONFIG_BLK_DEV_INITRD */
311         {
312             /* ROOT_DEV = MKDEV(VIODASD_MAJOR, 1); */
313         }
314
315         iSeries_recal_tb = get_tb();
316         iSeries_recal_titan = HvCallXm_loadTod();
317
318         /*
319          * Initialize the DMA/TCE management
320          */
321         iommu_init_early_iSeries();
322
323         /* Initialize machine-dependency vectors */
324 #ifdef CONFIG_SMP
325         smp_init_iSeries();
326 #endif
327
328         /* Associate Lp Event Queue 0 with processor 0 */
329         HvCallEvent_setLpEventQueueInterruptProc(0, 0);
330
331         mf_init();
332
333         /* If we were passed an initrd, set the ROOT_DEV properly if the values
334          * look sensible. If not, clear initrd reference.
335          */
336 #ifdef CONFIG_BLK_DEV_INITRD
337         if (initrd_start >= KERNELBASE && initrd_end >= KERNELBASE &&
338             initrd_end > initrd_start)
339                 ROOT_DEV = Root_RAM0;
340         else
341                 initrd_start = initrd_end = 0;
342 #endif /* CONFIG_BLK_DEV_INITRD */
343
344         DBG(" <- iSeries_init_early()\n");
345 }
346
347 struct mschunks_map mschunks_map = {
348         /* XXX We don't use these, but Piranha might need them. */
349         .chunk_size  = MSCHUNKS_CHUNK_SIZE,
350         .chunk_shift = MSCHUNKS_CHUNK_SHIFT,
351         .chunk_mask  = MSCHUNKS_OFFSET_MASK,
352 };
353 EXPORT_SYMBOL(mschunks_map);
354
355 void mschunks_alloc(unsigned long num_chunks)
356 {
357         klimit = _ALIGN(klimit, sizeof(u32));
358         mschunks_map.mapping = (u32 *)klimit;
359         klimit += num_chunks * sizeof(u32);
360         mschunks_map.num_chunks = num_chunks;
361 }
362
363 /*
364  * The iSeries may have very large memories ( > 128 GB ) and a partition
365  * may get memory in "chunks" that may be anywhere in the 2**52 real
366  * address space.  The chunks are 256K in size.  To map this to the
367  * memory model Linux expects, the AS/400 specific code builds a
368  * translation table to translate what Linux thinks are "physical"
369  * addresses to the actual real addresses.  This allows us to make
370  * it appear to Linux that we have contiguous memory starting at
371  * physical address zero while in fact this could be far from the truth.
372  * To avoid confusion, I'll let the words physical and/or real address
373  * apply to the Linux addresses while I'll use "absolute address" to
374  * refer to the actual hardware real address.
375  *
376  * build_iSeries_Memory_Map gets information from the Hypervisor and
377  * looks at the Main Store VPD to determine the absolute addresses
378  * of the memory that has been assigned to our partition and builds
379  * a table used to translate Linux's physical addresses to these
380  * absolute addresses.  Absolute addresses are needed when
381  * communicating with the hypervisor (e.g. to build HPT entries)
382  *
383  * Returns the physical memory size
384  */
385
386 static unsigned long __init build_iSeries_Memory_Map(void)
387 {
388         u32 loadAreaFirstChunk, loadAreaLastChunk, loadAreaSize;
389         u32 nextPhysChunk;
390         u32 hptFirstChunk, hptLastChunk, hptSizeChunks, hptSizePages;
391         u32 totalChunks,moreChunks;
392         u32 currChunk, thisChunk, absChunk;
393         u32 currDword;
394         u32 chunkBit;
395         u64 map;
396         struct MemoryBlock mb[32];
397         unsigned long numMemoryBlocks, curBlock;
398
399         /* Chunk size on iSeries is 256K bytes */
400         totalChunks = (u32)HvLpConfig_getMsChunks();
401         mschunks_alloc(totalChunks);
402
403         /*
404          * Get absolute address of our load area
405          * and map it to physical address 0
406          * This guarantees that the loadarea ends up at physical 0
407          * otherwise, it might not be returned by PLIC as the first
408          * chunks
409          */
410
411         loadAreaFirstChunk = (u32)addr_to_chunk(itLpNaca.xLoadAreaAddr);
412         loadAreaSize =  itLpNaca.xLoadAreaChunks;
413
414         /*
415          * Only add the pages already mapped here.
416          * Otherwise we might add the hpt pages
417          * The rest of the pages of the load area
418          * aren't in the HPT yet and can still
419          * be assigned an arbitrary physical address
420          */
421         if ((loadAreaSize * 64) > HvPagesToMap)
422                 loadAreaSize = HvPagesToMap / 64;
423
424         loadAreaLastChunk = loadAreaFirstChunk + loadAreaSize - 1;
425
426         /*
427          * TODO Do we need to do something if the HPT is in the 64MB load area?
428          * This would be required if the itLpNaca.xLoadAreaChunks includes
429          * the HPT size
430          */
431
432         printk("Mapping load area - physical addr = 0000000000000000\n"
433                 "                    absolute addr = %016lx\n",
434                 chunk_to_addr(loadAreaFirstChunk));
435         printk("Load area size %dK\n", loadAreaSize * 256);
436
437         for (nextPhysChunk = 0; nextPhysChunk < loadAreaSize; ++nextPhysChunk)
438                 mschunks_map.mapping[nextPhysChunk] =
439                         loadAreaFirstChunk + nextPhysChunk;
440
441         /*
442          * Get absolute address of our HPT and remember it so
443          * we won't map it to any physical address
444          */
445         hptFirstChunk = (u32)addr_to_chunk(HvCallHpt_getHptAddress());
446         hptSizePages = (u32)HvCallHpt_getHptPages();
447         hptSizeChunks = hptSizePages >>
448                 (MSCHUNKS_CHUNK_SHIFT - HW_PAGE_SHIFT);
449         hptLastChunk = hptFirstChunk + hptSizeChunks - 1;
450
451         printk("HPT absolute addr = %016lx, size = %dK\n",
452                         chunk_to_addr(hptFirstChunk), hptSizeChunks * 256);
453
454         /*
455          * Determine if absolute memory has any
456          * holes so that we can interpret the
457          * access map we get back from the hypervisor
458          * correctly.
459          */
460         numMemoryBlocks = iSeries_process_mainstore_vpd(mb, 32);
461
462         /*
463          * Process the main store access map from the hypervisor
464          * to build up our physical -> absolute translation table
465          */
466         curBlock = 0;
467         currChunk = 0;
468         currDword = 0;
469         moreChunks = totalChunks;
470
471         while (moreChunks) {
472                 map = HvCallSm_get64BitsOfAccessMap(itLpNaca.xLpIndex,
473                                 currDword);
474                 thisChunk = currChunk;
475                 while (map) {
476                         chunkBit = map >> 63;
477                         map <<= 1;
478                         if (chunkBit) {
479                                 --moreChunks;
480                                 while (thisChunk >= mb[curBlock].logicalEnd) {
481                                         ++curBlock;
482                                         if (curBlock >= numMemoryBlocks)
483                                                 panic("out of memory blocks");
484                                 }
485                                 if (thisChunk < mb[curBlock].logicalStart)
486                                         panic("memory block error");
487
488                                 absChunk = mb[curBlock].absStart +
489                                         (thisChunk - mb[curBlock].logicalStart);
490                                 if (((absChunk < hptFirstChunk) ||
491                                      (absChunk > hptLastChunk)) &&
492                                     ((absChunk < loadAreaFirstChunk) ||
493                                      (absChunk > loadAreaLastChunk))) {
494                                         mschunks_map.mapping[nextPhysChunk] =
495                                                 absChunk;
496                                         ++nextPhysChunk;
497                                 }
498                         }
499                         ++thisChunk;
500                 }
501                 ++currDword;
502                 currChunk += 64;
503         }
504
505         /*
506          * main store size (in chunks) is
507          *   totalChunks - hptSizeChunks
508          * which should be equal to
509          *   nextPhysChunk
510          */
511         return chunk_to_addr(nextPhysChunk);
512 }
513
514 /*
515  * Document me.
516  */
517 static void __init iSeries_setup_arch(void)
518 {
519         if (get_lppaca()->shared_proc) {
520                 ppc_md.idle_loop = iseries_shared_idle;
521                 printk(KERN_DEBUG "Using shared processor idle loop\n");
522         } else {
523                 ppc_md.idle_loop = iseries_dedicated_idle;
524                 printk(KERN_DEBUG "Using dedicated idle loop\n");
525         }
526
527         /* Setup the Lp Event Queue */
528         setup_hvlpevent_queue();
529
530         printk("Max  logical processors = %d\n",
531                         itVpdAreas.xSlicMaxLogicalProcs);
532         printk("Max physical processors = %d\n",
533                         itVpdAreas.xSlicMaxPhysicalProcs);
534 }
535
536 static void iSeries_show_cpuinfo(struct seq_file *m)
537 {
538         seq_printf(m, "machine\t\t: 64-bit iSeries Logical Partition\n");
539 }
540
541 static void __init iSeries_progress(char * st, unsigned short code)
542 {
543         printk("Progress: [%04x] - %s\n", (unsigned)code, st);
544         mf_display_progress(code);
545 }
546
547 static void __init iSeries_fixup_klimit(void)
548 {
549         /*
550          * Change klimit to take into account any ram disk
551          * that may be included
552          */
553         if (naca.xRamDisk)
554                 klimit = KERNELBASE + (u64)naca.xRamDisk +
555                         (naca.xRamDiskSize * HW_PAGE_SIZE);
556 }
557
558 static int __init iSeries_src_init(void)
559 {
560         /* clear the progress line */
561         ppc_md.progress(" ", 0xffff);
562         return 0;
563 }
564
565 late_initcall(iSeries_src_init);
566
567 static inline void process_iSeries_events(void)
568 {
569         asm volatile ("li 0,0x5555; sc" : : : "r0", "r3");
570 }
571
572 static void yield_shared_processor(void)
573 {
574         unsigned long tb;
575
576         HvCall_setEnabledInterrupts(HvCall_MaskIPI |
577                                     HvCall_MaskLpEvent |
578                                     HvCall_MaskLpProd |
579                                     HvCall_MaskTimeout);
580
581         tb = get_tb();
582         /* Compute future tb value when yield should expire */
583         HvCall_yieldProcessor(HvCall_YieldTimed, tb+tb_ticks_per_jiffy);
584
585         /*
586          * The decrementer stops during the yield.  Force a fake decrementer
587          * here and let the timer_interrupt code sort out the actual time.
588          */
589         get_lppaca()->int_dword.fields.decr_int = 1;
590         ppc64_runlatch_on();
591         process_iSeries_events();
592 }
593
594 static void iseries_shared_idle(void)
595 {
596         while (1) {
597                 while (!need_resched() && !hvlpevent_is_pending()) {
598                         local_irq_disable();
599                         ppc64_runlatch_off();
600
601                         /* Recheck with irqs off */
602                         if (!need_resched() && !hvlpevent_is_pending())
603                                 yield_shared_processor();
604
605                         HMT_medium();
606                         local_irq_enable();
607                 }
608
609                 ppc64_runlatch_on();
610
611                 if (hvlpevent_is_pending())
612                         process_iSeries_events();
613
614                 preempt_enable_no_resched();
615                 schedule();
616                 preempt_disable();
617         }
618 }
619
620 static void iseries_dedicated_idle(void)
621 {
622         set_thread_flag(TIF_POLLING_NRFLAG);
623
624         while (1) {
625                 if (!need_resched()) {
626                         while (!need_resched()) {
627                                 ppc64_runlatch_off();
628                                 HMT_low();
629
630                                 if (hvlpevent_is_pending()) {
631                                         HMT_medium();
632                                         ppc64_runlatch_on();
633                                         process_iSeries_events();
634                                 }
635                         }
636
637                         HMT_medium();
638                 }
639
640                 ppc64_runlatch_on();
641                 preempt_enable_no_resched();
642                 schedule();
643                 preempt_disable();
644         }
645 }
646
647 #ifndef CONFIG_PCI
648 void __init iSeries_init_IRQ(void) { }
649 #endif
650
651 static int __init iseries_probe(void)
652 {
653         unsigned long root = of_get_flat_dt_root();
654         if (!of_flat_dt_is_compatible(root, "IBM,iSeries"))
655                 return 0;
656
657         powerpc_firmware_features |= FW_FEATURE_ISERIES;
658         powerpc_firmware_features |= FW_FEATURE_LPAR;
659
660         hpte_init_iSeries();
661
662         return 1;
663 }
664
665 define_machine(iseries) {
666         .name           = "iSeries",
667         .setup_arch     = iSeries_setup_arch,
668         .show_cpuinfo   = iSeries_show_cpuinfo,
669         .init_IRQ       = iSeries_init_IRQ,
670         .get_irq        = iSeries_get_irq,
671         .init_early     = iSeries_init_early,
672         .pcibios_fixup  = iSeries_pci_final_fixup,
673         .restart        = mf_reboot,
674         .power_off      = mf_power_off,
675         .halt           = mf_power_off,
676         .get_boot_time  = iSeries_get_boot_time,
677         .set_rtc_time   = iSeries_set_rtc_time,
678         .get_rtc_time   = iSeries_get_rtc_time,
679         .calibrate_decr = generic_calibrate_decr,
680         .progress       = iSeries_progress,
681         .probe          = iseries_probe,
682         /* XXX Implement enable_pmcs for iSeries */
683 };
684
685 void * __init iSeries_early_setup(void)
686 {
687         unsigned long phys_mem_size;
688
689         iSeries_fixup_klimit();
690
691         /*
692          * Initialize the table which translate Linux physical addresses to
693          * AS/400 absolute addresses
694          */
695         phys_mem_size = build_iSeries_Memory_Map();
696
697         iSeries_get_cmdline();
698
699         return (void *) __pa(build_flat_dt(phys_mem_size));
700 }
701
702 static void hvputc(char c)
703 {
704         if (c == '\n')
705                 hvputc('\r');
706
707         HvCall_writeLogBuffer(&c, 1);
708 }
709
710 void __init udbg_init_iseries(void)
711 {
712         udbg_putc = hvputc;
713 }