2 * Boot code and exception vectors for Book3E processors
4 * Copyright (C) 2007 Ben. Herrenschmidt (benh@kernel.crashing.org), IBM Corp.
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
12 #include <linux/threads.h>
15 #include <asm/ppc_asm.h>
16 #include <asm/asm-offsets.h>
17 #include <asm/cputable.h>
18 #include <asm/setup.h>
19 #include <asm/thread_info.h>
20 #include <asm/reg_a2.h>
21 #include <asm/exception-64e.h>
23 #include <asm/irqflags.h>
24 #include <asm/ptrace.h>
25 #include <asm/ppc-opcode.h>
27 #include <asm/hw_irq.h>
28 #include <asm/kvm_asm.h>
29 #include <asm/kvm_booke_hv_asm.h>
31 /* XXX This will ultimately add space for a special exception save
32 * structure used to save things like SRR0/SRR1, SPRGs, MAS, etc...
33 * when taking special interrupts. For now we don't support that,
34 * special interrupts from within a non-standard level will probably
37 #define SPECIAL_EXC_FRAME_SIZE INT_FRAME_SIZE
39 /* Now we only store something to exception thread info */
40 #define EXC_LEVEL_EXCEPTION_PROLOG(type) \
41 ld r14,PACAKSAVE(r13); \
42 CURRENT_THREAD_INFO(r14, r14); \
43 CURRENT_THREAD_INFO(r15, r1); \
44 ld r10,TI_FLAGS(r14); \
45 std r10,TI_FLAGS(r15); \
46 ld r10,TI_PREEMPT(r14); \
47 std r10,TI_PREEMPT(r15); \
48 ld r10,TI_TASK(r14); \
52 /* Exception prolog code for all exceptions */
53 #define EXCEPTION_PROLOG(n, intnum, type, addition) \
54 mtspr SPRN_SPRG_##type##_SCRATCH,r13; /* get spare registers */ \
55 mfspr r13,SPRN_SPRG_PACA; /* get PACA */ \
56 std r10,PACA_EX##type+EX_R10(r13); \
57 std r11,PACA_EX##type+EX_R11(r13); \
58 mfcr r10; /* save CR */ \
59 mfspr r11,SPRN_##type##_SRR1;/* what are we coming from */ \
60 DO_KVM intnum,SPRN_##type##_SRR1; /* KVM hook */ \
61 stw r10,PACA_EX##type+EX_CR(r13); /* save old CR in the PACA */ \
62 addition; /* additional code for that exc. */ \
63 std r1,PACA_EX##type+EX_R1(r13); /* save old r1 in the PACA */ \
64 type##_SET_KSTACK; /* get special stack if necessary */\
65 andi. r10,r11,MSR_PR; /* save stack pointer */ \
66 beq 1f; /* branch around if supervisor */ \
67 ld r1,PACAKSAVE(r13); /* get kernel stack coming from usr */\
68 1: cmpdi cr1,r1,0; /* check if SP makes sense */ \
69 bge- cr1,exc_##n##_bad_stack;/* bad stack (TODO: out of line) */ \
70 mfspr r10,SPRN_##type##_SRR0; /* read SRR0 before touching stack */
72 /* Exception type-specific macros */
73 #define GEN_SET_KSTACK \
74 subi r1,r1,INT_FRAME_SIZE; /* alloc frame on kernel stack */
75 #define SPRN_GEN_SRR0 SPRN_SRR0
76 #define SPRN_GEN_SRR1 SPRN_SRR1
78 #define GDBELL_SET_KSTACK GEN_SET_KSTACK
79 #define SPRN_GDBELL_SRR0 SPRN_GSRR0
80 #define SPRN_GDBELL_SRR1 SPRN_GSRR1
82 #define CRIT_SET_KSTACK \
83 ld r1,PACA_CRIT_STACK(r13); \
84 subi r1,r1,SPECIAL_EXC_FRAME_SIZE; \
85 EXC_LEVEL_EXCEPTION_PROLOG(CRIT);
86 #define SPRN_CRIT_SRR0 SPRN_CSRR0
87 #define SPRN_CRIT_SRR1 SPRN_CSRR1
89 #define DBG_SET_KSTACK \
90 ld r1,PACA_DBG_STACK(r13); \
91 subi r1,r1,SPECIAL_EXC_FRAME_SIZE; \
92 EXC_LEVEL_EXCEPTION_PROLOG(DBG);
93 #define SPRN_DBG_SRR0 SPRN_DSRR0
94 #define SPRN_DBG_SRR1 SPRN_DSRR1
96 #define MC_SET_KSTACK \
97 ld r1,PACA_MC_STACK(r13); \
98 subi r1,r1,SPECIAL_EXC_FRAME_SIZE; \
99 EXC_LEVEL_EXCEPTION_PROLOG(MC);
100 #define SPRN_MC_SRR0 SPRN_MCSRR0
101 #define SPRN_MC_SRR1 SPRN_MCSRR1
103 #define NORMAL_EXCEPTION_PROLOG(n, intnum, addition) \
104 EXCEPTION_PROLOG(n, intnum, GEN, addition##_GEN(n))
106 #define CRIT_EXCEPTION_PROLOG(n, intnum, addition) \
107 EXCEPTION_PROLOG(n, intnum, CRIT, addition##_CRIT(n))
109 #define DBG_EXCEPTION_PROLOG(n, intnum, addition) \
110 EXCEPTION_PROLOG(n, intnum, DBG, addition##_DBG(n))
112 #define MC_EXCEPTION_PROLOG(n, intnum, addition) \
113 EXCEPTION_PROLOG(n, intnum, MC, addition##_MC(n))
115 #define GDBELL_EXCEPTION_PROLOG(n, intnum, addition) \
116 EXCEPTION_PROLOG(n, intnum, GDBELL, addition##_GDBELL(n))
118 /* Variants of the "addition" argument for the prolog
120 #define PROLOG_ADDITION_NONE_GEN(n)
121 #define PROLOG_ADDITION_NONE_GDBELL(n)
122 #define PROLOG_ADDITION_NONE_CRIT(n)
123 #define PROLOG_ADDITION_NONE_DBG(n)
124 #define PROLOG_ADDITION_NONE_MC(n)
126 #define PROLOG_ADDITION_MASKABLE_GEN(n) \
127 lbz r10,PACASOFTIRQEN(r13); /* are irqs soft-disabled ? */ \
128 cmpwi cr0,r10,0; /* yes -> go out of line */ \
129 beq masked_interrupt_book3e_##n
131 #define PROLOG_ADDITION_2REGS_GEN(n) \
132 std r14,PACA_EXGEN+EX_R14(r13); \
133 std r15,PACA_EXGEN+EX_R15(r13)
135 #define PROLOG_ADDITION_1REG_GEN(n) \
136 std r14,PACA_EXGEN+EX_R14(r13);
138 #define PROLOG_ADDITION_2REGS_CRIT(n) \
139 std r14,PACA_EXCRIT+EX_R14(r13); \
140 std r15,PACA_EXCRIT+EX_R15(r13)
142 #define PROLOG_ADDITION_2REGS_DBG(n) \
143 std r14,PACA_EXDBG+EX_R14(r13); \
144 std r15,PACA_EXDBG+EX_R15(r13)
146 #define PROLOG_ADDITION_2REGS_MC(n) \
147 std r14,PACA_EXMC+EX_R14(r13); \
148 std r15,PACA_EXMC+EX_R15(r13)
151 /* Core exception code for all exceptions except TLB misses. */
152 #define EXCEPTION_COMMON_LVL(n, scratch, excf) \
154 std r0,GPR0(r1); /* save r0 in stackframe */ \
155 std r2,GPR2(r1); /* save r2 in stackframe */ \
156 SAVE_4GPRS(3, r1); /* save r3 - r6 in stackframe */ \
157 SAVE_2GPRS(7, r1); /* save r7, r8 in stackframe */ \
158 std r9,GPR9(r1); /* save r9 in stackframe */ \
159 std r10,_NIP(r1); /* save SRR0 to stackframe */ \
160 std r11,_MSR(r1); /* save SRR1 to stackframe */ \
161 beq 2f; /* if from kernel mode */ \
162 ACCOUNT_CPU_USER_ENTRY(r10,r11);/* accounting (uses cr0+eq) */ \
163 2: ld r3,excf+EX_R10(r13); /* get back r10 */ \
164 ld r4,excf+EX_R11(r13); /* get back r11 */ \
165 mfspr r5,scratch; /* get back r13 */ \
166 std r12,GPR12(r1); /* save r12 in stackframe */ \
167 ld r2,PACATOC(r13); /* get kernel TOC into r2 */ \
168 mflr r6; /* save LR in stackframe */ \
169 mfctr r7; /* save CTR in stackframe */ \
170 mfspr r8,SPRN_XER; /* save XER in stackframe */ \
171 ld r9,excf+EX_R1(r13); /* load orig r1 back from PACA */ \
172 lwz r10,excf+EX_CR(r13); /* load orig CR back from PACA */ \
173 lbz r11,PACASOFTIRQEN(r13); /* get current IRQ softe */ \
174 ld r12,exception_marker@toc(r2); \
176 std r3,GPR10(r1); /* save r10 to stackframe */ \
177 std r4,GPR11(r1); /* save r11 to stackframe */ \
178 std r5,GPR13(r1); /* save it to stackframe */ \
182 li r3,(n)+1; /* indicate partial regs in trap */ \
183 std r9,0(r1); /* store stack frame back link */ \
184 std r10,_CCR(r1); /* store orig CR in stackframe */ \
185 std r9,GPR1(r1); /* store stack frame back link */ \
186 std r11,SOFTE(r1); /* and save it to stackframe */ \
187 std r12,STACK_FRAME_OVERHEAD-16(r1); /* mark the frame */ \
188 std r3,_TRAP(r1); /* set trap number */ \
189 std r0,RESULT(r1); /* clear regs->result */
191 #define EXCEPTION_COMMON(n) \
192 EXCEPTION_COMMON_LVL(n, SPRN_SPRG_GEN_SCRATCH, PACA_EXGEN)
193 #define EXCEPTION_COMMON_CRIT(n) \
194 EXCEPTION_COMMON_LVL(n, SPRN_SPRG_CRIT_SCRATCH, PACA_EXCRIT)
195 #define EXCEPTION_COMMON_MC(n) \
196 EXCEPTION_COMMON_LVL(n, SPRN_SPRG_MC_SCRATCH, PACA_EXMC)
197 #define EXCEPTION_COMMON_DBG(n) \
198 EXCEPTION_COMMON_LVL(n, SPRN_SPRG_DBG_SCRATCH, PACA_EXDBG)
201 * This is meant for exceptions that don't immediately hard-enable. We
202 * set a bit in paca->irq_happened to ensure that a subsequent call to
203 * arch_local_irq_restore() will properly hard-enable and avoid the
204 * fast-path, and then reconcile irq state.
206 #define INTS_DISABLE RECONCILE_IRQ_STATE(r3,r4)
209 * This is called by exceptions that don't use INTS_DISABLE (that did not
210 * touch irq indicators in the PACA). This will restore MSR:EE to it's
213 * XXX In the long run, we may want to open-code it in order to separate the
214 * load from the wrtee, thus limiting the latency caused by the dependency
215 * but at this point, I'll favor code clarity until we have a near to final
218 #define INTS_RESTORE_HARD \
222 /* XXX FIXME: Restore r14/r15 when necessary */
223 #define BAD_STACK_TRAMPOLINE(n) \
224 exc_##n##_bad_stack: \
225 li r1,(n); /* get exception number */ \
226 sth r1,PACA_TRAP_SAVE(r13); /* store trap */ \
227 b bad_stack_book3e; /* bad stack error */
229 /* WARNING: If you change the layout of this stub, make sure you chcek
230 * the debug exception handler which handles single stepping
231 * into exceptions from userspace, and the MM code in
232 * arch/powerpc/mm/tlb_nohash.c which patches the branch here
233 * and would need to be updated if that branch is moved
235 #define EXCEPTION_STUB(loc, label) \
236 . = interrupt_base_book3e + loc; \
237 nop; /* To make debug interrupts happy */ \
238 b exc_##label##_book3e;
248 /* Used by asynchronous interrupt that may happen in the idle loop.
250 * This check if the thread was in the idle loop, and if yes, returns
251 * to the caller rather than the PC. This is to avoid a race if
252 * interrupts happen before the wait instruction.
254 #define CHECK_NAPPING() \
255 CURRENT_THREAD_INFO(r11, r1); \
256 ld r10,TI_LOCAL_FLAGS(r11); \
257 andi. r9,r10,_TLF_NAPPING; \
260 rlwinm r7,r10,0,~_TLF_NAPPING; \
262 std r7,TI_LOCAL_FLAGS(r11); \
266 #define MASKABLE_EXCEPTION(trapnum, intnum, label, hdlr, ack) \
267 START_EXCEPTION(label); \
268 NORMAL_EXCEPTION_PROLOG(trapnum, intnum, PROLOG_ADDITION_MASKABLE)\
269 EXCEPTION_COMMON(trapnum) \
273 addi r3,r1,STACK_FRAME_OVERHEAD; \
275 b .ret_from_except_lite;
277 /* This value is used to mark exception frames on the stack. */
280 .tc ID_EXC_MARKER[TC],STACK_FRAME_REGS_MARKER
284 * And here we have the exception vectors !
289 .globl interrupt_base_book3e
290 interrupt_base_book3e: /* fake trap */
291 EXCEPTION_STUB(0x000, machine_check)
292 EXCEPTION_STUB(0x020, critical_input) /* 0x0100 */
293 EXCEPTION_STUB(0x040, debug_crit) /* 0x0d00 */
294 EXCEPTION_STUB(0x060, data_storage) /* 0x0300 */
295 EXCEPTION_STUB(0x080, instruction_storage) /* 0x0400 */
296 EXCEPTION_STUB(0x0a0, external_input) /* 0x0500 */
297 EXCEPTION_STUB(0x0c0, alignment) /* 0x0600 */
298 EXCEPTION_STUB(0x0e0, program) /* 0x0700 */
299 EXCEPTION_STUB(0x100, fp_unavailable) /* 0x0800 */
300 EXCEPTION_STUB(0x120, system_call) /* 0x0c00 */
301 EXCEPTION_STUB(0x140, ap_unavailable) /* 0x0f20 */
302 EXCEPTION_STUB(0x160, decrementer) /* 0x0900 */
303 EXCEPTION_STUB(0x180, fixed_interval) /* 0x0980 */
304 EXCEPTION_STUB(0x1a0, watchdog) /* 0x09f0 */
305 EXCEPTION_STUB(0x1c0, data_tlb_miss)
306 EXCEPTION_STUB(0x1e0, instruction_tlb_miss)
307 EXCEPTION_STUB(0x200, altivec_unavailable)
308 EXCEPTION_STUB(0x220, altivec_assist)
309 EXCEPTION_STUB(0x260, perfmon)
310 EXCEPTION_STUB(0x280, doorbell)
311 EXCEPTION_STUB(0x2a0, doorbell_crit)
312 EXCEPTION_STUB(0x2c0, guest_doorbell)
313 EXCEPTION_STUB(0x2e0, guest_doorbell_crit)
314 EXCEPTION_STUB(0x300, hypercall)
315 EXCEPTION_STUB(0x320, ehpriv)
316 EXCEPTION_STUB(0x340, lrat_error)
318 .globl interrupt_end_book3e
319 interrupt_end_book3e:
321 /* Critical Input Interrupt */
322 START_EXCEPTION(critical_input);
323 CRIT_EXCEPTION_PROLOG(0x100, BOOKE_INTERRUPT_CRITICAL,
324 PROLOG_ADDITION_NONE)
325 // EXCEPTION_COMMON_CRIT(0x100)
327 // bl special_reg_save_crit
329 // addi r3,r1,STACK_FRAME_OVERHEAD
330 // bl .critical_exception
331 // b ret_from_crit_except
334 /* Machine Check Interrupt */
335 START_EXCEPTION(machine_check);
336 MC_EXCEPTION_PROLOG(0x000, BOOKE_INTERRUPT_MACHINE_CHECK,
337 PROLOG_ADDITION_NONE)
338 // EXCEPTION_COMMON_MC(0x000)
340 // bl special_reg_save_mc
341 // addi r3,r1,STACK_FRAME_OVERHEAD
343 // bl .machine_check_exception
344 // b ret_from_mc_except
347 /* Data Storage Interrupt */
348 START_EXCEPTION(data_storage)
349 NORMAL_EXCEPTION_PROLOG(0x300, BOOKE_INTERRUPT_DATA_STORAGE,
350 PROLOG_ADDITION_2REGS)
353 EXCEPTION_COMMON(0x300)
355 b storage_fault_common
357 /* Instruction Storage Interrupt */
358 START_EXCEPTION(instruction_storage);
359 NORMAL_EXCEPTION_PROLOG(0x400, BOOKE_INTERRUPT_INST_STORAGE,
360 PROLOG_ADDITION_2REGS)
363 EXCEPTION_COMMON(0x400)
365 b storage_fault_common
367 /* External Input Interrupt */
368 MASKABLE_EXCEPTION(0x500, BOOKE_INTERRUPT_EXTERNAL,
369 external_input, .do_IRQ, ACK_NONE)
372 START_EXCEPTION(alignment);
373 NORMAL_EXCEPTION_PROLOG(0x600, BOOKE_INTERRUPT_ALIGNMENT,
374 PROLOG_ADDITION_2REGS)
377 EXCEPTION_COMMON(0x600)
378 b alignment_more /* no room, go out of line */
380 /* Program Interrupt */
381 START_EXCEPTION(program);
382 NORMAL_EXCEPTION_PROLOG(0x700, BOOKE_INTERRUPT_PROGRAM,
383 PROLOG_ADDITION_1REG)
385 EXCEPTION_COMMON(0x700)
388 addi r3,r1,STACK_FRAME_OVERHEAD
389 ld r14,PACA_EXGEN+EX_R14(r13)
391 bl .program_check_exception
394 /* Floating Point Unavailable Interrupt */
395 START_EXCEPTION(fp_unavailable);
396 NORMAL_EXCEPTION_PROLOG(0x800, BOOKE_INTERRUPT_FP_UNAVAIL,
397 PROLOG_ADDITION_NONE)
398 /* we can probably do a shorter exception entry for that one... */
399 EXCEPTION_COMMON(0x800)
404 b fast_exception_return
407 addi r3,r1,STACK_FRAME_OVERHEAD
408 bl .kernel_fp_unavailable_exception
411 /* Altivec Unavailable Interrupt */
412 START_EXCEPTION(altivec_unavailable);
413 NORMAL_EXCEPTION_PROLOG(0x200, BOOKE_INTERRUPT_SPE_ALTIVEC_UNAVAIL,
414 PROLOG_ADDITION_NONE)
415 /* we can probably do a shorter exception entry for that one... */
416 EXCEPTION_COMMON(0x200)
417 #ifdef CONFIG_ALTIVEC
423 b fast_exception_return
425 END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC)
429 addi r3,r1,STACK_FRAME_OVERHEAD
430 bl .altivec_unavailable_exception
434 START_EXCEPTION(altivec_assist);
435 NORMAL_EXCEPTION_PROLOG(0x220,
436 BOOKE_INTERRUPT_SPE_FP_DATA_ALTIVEC_ASSIST,
437 PROLOG_ADDITION_NONE)
438 EXCEPTION_COMMON(0x220)
441 addi r3,r1,STACK_FRAME_OVERHEAD
442 #ifdef CONFIG_ALTIVEC
444 bl .altivec_assist_exception
445 END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC)
447 bl .unknown_exception
452 /* Decrementer Interrupt */
453 MASKABLE_EXCEPTION(0x900, BOOKE_INTERRUPT_DECREMENTER,
454 decrementer, .timer_interrupt, ACK_DEC)
456 /* Fixed Interval Timer Interrupt */
457 MASKABLE_EXCEPTION(0x980, BOOKE_INTERRUPT_FIT,
458 fixed_interval, .unknown_exception, ACK_FIT)
460 /* Watchdog Timer Interrupt */
461 START_EXCEPTION(watchdog);
462 CRIT_EXCEPTION_PROLOG(0x9f0, BOOKE_INTERRUPT_WATCHDOG,
463 PROLOG_ADDITION_NONE)
464 // EXCEPTION_COMMON_CRIT(0x9f0)
466 // bl special_reg_save_crit
468 // addi r3,r1,STACK_FRAME_OVERHEAD
469 // bl .unknown_exception
470 // b ret_from_crit_except
473 /* System Call Interrupt */
474 START_EXCEPTION(system_call)
475 mr r9,r13 /* keep a copy of userland r13 */
476 mfspr r11,SPRN_SRR0 /* get return address */
477 mfspr r12,SPRN_SRR1 /* get previous MSR */
478 mfspr r13,SPRN_SPRG_PACA /* get our PACA */
481 /* Auxiliary Processor Unavailable Interrupt */
482 START_EXCEPTION(ap_unavailable);
483 NORMAL_EXCEPTION_PROLOG(0xf20, BOOKE_INTERRUPT_AP_UNAVAIL,
484 PROLOG_ADDITION_NONE)
485 EXCEPTION_COMMON(0xf20)
488 addi r3,r1,STACK_FRAME_OVERHEAD
489 bl .unknown_exception
492 /* Debug exception as a critical interrupt*/
493 START_EXCEPTION(debug_crit);
494 CRIT_EXCEPTION_PROLOG(0xd00, BOOKE_INTERRUPT_DEBUG,
495 PROLOG_ADDITION_2REGS)
498 * If there is a single step or branch-taken exception in an
499 * exception entry sequence, it was probably meant to apply to
500 * the code where the exception occurred (since exception entry
501 * doesn't turn off DE automatically). We simulate the effect
502 * of turning off DE on entry to an exception handler by turning
503 * off DE in the CSRR1 value and clearing the debug status.
506 mfspr r14,SPRN_DBSR /* check single-step/branch taken */
507 andis. r15,r14,(DBSR_IC|DBSR_BT)@h
510 LOAD_REG_IMMEDIATE(r14,interrupt_base_book3e)
511 LOAD_REG_IMMEDIATE(r15,interrupt_end_book3e)
517 /* here it looks like we got an inappropriate debug exception. */
518 lis r14,(DBSR_IC|DBSR_BT)@h /* clear the event */
519 rlwinm r11,r11,0,~MSR_DE /* clear DE in the CSRR1 value */
522 lwz r10,PACA_EXCRIT+EX_CR(r13) /* restore registers */
523 ld r1,PACA_EXCRIT+EX_R1(r13)
524 ld r14,PACA_EXCRIT+EX_R14(r13)
525 ld r15,PACA_EXCRIT+EX_R15(r13)
527 ld r10,PACA_EXCRIT+EX_R10(r13) /* restore registers */
528 ld r11,PACA_EXCRIT+EX_R11(r13)
529 mfspr r13,SPRN_SPRG_CRIT_SCRATCH
532 /* Normal debug exception */
533 /* XXX We only handle coming from userspace for now since we can't
534 * quite save properly an interrupted kernel state yet
536 1: andi. r14,r11,MSR_PR; /* check for userspace again */
537 beq kernel_dbg_exc; /* if from kernel mode */
539 /* Now we mash up things to make it look like we are coming on a
543 EXCEPTION_COMMON_CRIT(0xd00)
546 addi r3,r1,STACK_FRAME_OVERHEAD
548 ld r14,PACA_EXCRIT+EX_R14(r13)
549 ld r15,PACA_EXCRIT+EX_R15(r13)
557 /* Debug exception as a debug interrupt*/
558 START_EXCEPTION(debug_debug);
559 DBG_EXCEPTION_PROLOG(0xd00, BOOKE_INTERRUPT_DEBUG,
560 PROLOG_ADDITION_2REGS)
563 * If there is a single step or branch-taken exception in an
564 * exception entry sequence, it was probably meant to apply to
565 * the code where the exception occurred (since exception entry
566 * doesn't turn off DE automatically). We simulate the effect
567 * of turning off DE on entry to an exception handler by turning
568 * off DE in the DSRR1 value and clearing the debug status.
571 mfspr r14,SPRN_DBSR /* check single-step/branch taken */
572 andis. r15,r14,(DBSR_IC|DBSR_BT)@h
575 LOAD_REG_IMMEDIATE(r14,interrupt_base_book3e)
576 LOAD_REG_IMMEDIATE(r15,interrupt_end_book3e)
582 /* here it looks like we got an inappropriate debug exception. */
583 lis r14,(DBSR_IC|DBSR_BT)@h /* clear the event */
584 rlwinm r11,r11,0,~MSR_DE /* clear DE in the DSRR1 value */
587 lwz r10,PACA_EXDBG+EX_CR(r13) /* restore registers */
588 ld r1,PACA_EXDBG+EX_R1(r13)
589 ld r14,PACA_EXDBG+EX_R14(r13)
590 ld r15,PACA_EXDBG+EX_R15(r13)
592 ld r10,PACA_EXDBG+EX_R10(r13) /* restore registers */
593 ld r11,PACA_EXDBG+EX_R11(r13)
594 mfspr r13,SPRN_SPRG_DBG_SCRATCH
597 /* Normal debug exception */
598 /* XXX We only handle coming from userspace for now since we can't
599 * quite save properly an interrupted kernel state yet
601 1: andi. r14,r11,MSR_PR; /* check for userspace again */
602 beq kernel_dbg_exc; /* if from kernel mode */
604 /* Now we mash up things to make it look like we are coming on a
608 EXCEPTION_COMMON_DBG(0xd08)
611 addi r3,r1,STACK_FRAME_OVERHEAD
613 ld r14,PACA_EXDBG+EX_R14(r13)
614 ld r15,PACA_EXDBG+EX_R15(r13)
619 START_EXCEPTION(perfmon);
620 NORMAL_EXCEPTION_PROLOG(0x260, BOOKE_INTERRUPT_PERFORMANCE_MONITOR,
621 PROLOG_ADDITION_NONE)
622 EXCEPTION_COMMON(0x260)
625 addi r3,r1,STACK_FRAME_OVERHEAD
626 bl .performance_monitor_exception
627 b .ret_from_except_lite
629 /* Doorbell interrupt */
630 MASKABLE_EXCEPTION(0x280, BOOKE_INTERRUPT_DOORBELL,
631 doorbell, .doorbell_exception, ACK_NONE)
633 /* Doorbell critical Interrupt */
634 START_EXCEPTION(doorbell_crit);
635 CRIT_EXCEPTION_PROLOG(0x2a0, BOOKE_INTERRUPT_DOORBELL_CRITICAL,
636 PROLOG_ADDITION_NONE)
637 // EXCEPTION_COMMON_CRIT(0x2a0)
639 // bl special_reg_save_crit
641 // addi r3,r1,STACK_FRAME_OVERHEAD
642 // bl .doorbell_critical_exception
643 // b ret_from_crit_except
647 * Guest doorbell interrupt
648 * This general exception use GSRRx save/restore registers
650 START_EXCEPTION(guest_doorbell);
651 GDBELL_EXCEPTION_PROLOG(0x2c0, BOOKE_INTERRUPT_GUEST_DBELL,
652 PROLOG_ADDITION_NONE)
653 EXCEPTION_COMMON(0x2c0)
654 addi r3,r1,STACK_FRAME_OVERHEAD
657 bl .unknown_exception
660 /* Guest Doorbell critical Interrupt */
661 START_EXCEPTION(guest_doorbell_crit);
662 CRIT_EXCEPTION_PROLOG(0x2e0, BOOKE_INTERRUPT_GUEST_DBELL_CRIT,
663 PROLOG_ADDITION_NONE)
664 // EXCEPTION_COMMON_CRIT(0x2e0)
666 // bl special_reg_save_crit
668 // addi r3,r1,STACK_FRAME_OVERHEAD
669 // bl .guest_doorbell_critical_exception
670 // b ret_from_crit_except
673 /* Hypervisor call */
674 START_EXCEPTION(hypercall);
675 NORMAL_EXCEPTION_PROLOG(0x310, BOOKE_INTERRUPT_HV_SYSCALL,
676 PROLOG_ADDITION_NONE)
677 EXCEPTION_COMMON(0x310)
678 addi r3,r1,STACK_FRAME_OVERHEAD
681 bl .unknown_exception
684 /* Embedded Hypervisor priviledged */
685 START_EXCEPTION(ehpriv);
686 NORMAL_EXCEPTION_PROLOG(0x320, BOOKE_INTERRUPT_HV_PRIV,
687 PROLOG_ADDITION_NONE)
688 EXCEPTION_COMMON(0x320)
689 addi r3,r1,STACK_FRAME_OVERHEAD
692 bl .unknown_exception
695 /* LRAT Error interrupt */
696 START_EXCEPTION(lrat_error);
697 NORMAL_EXCEPTION_PROLOG(0x340, BOOKE_INTERRUPT_LRAT_ERROR,
698 PROLOG_ADDITION_NONE)
699 EXCEPTION_COMMON(0x340)
700 addi r3,r1,STACK_FRAME_OVERHEAD
703 bl .unknown_exception
707 * An interrupt came in while soft-disabled; We mark paca->irq_happened
708 * accordingly and if the interrupt is level sensitive, we hard disable
711 .macro masked_interrupt_book3e paca_irq full_mask
712 lbz r10,PACAIRQHAPPENED(r13)
713 ori r10,r10,\paca_irq
714 stb r10,PACAIRQHAPPENED(r13)
717 rldicl r10,r11,48,1 /* clear MSR_EE */
722 lwz r11,PACA_EXGEN+EX_CR(r13)
724 ld r10,PACA_EXGEN+EX_R10(r13)
725 ld r11,PACA_EXGEN+EX_R11(r13)
726 mfspr r13,SPRN_SPRG_GEN_SCRATCH
731 masked_interrupt_book3e_0x500:
732 // XXX When adding support for EPR, use PACA_IRQ_EE_EDGE
733 masked_interrupt_book3e PACA_IRQ_EE 1
735 masked_interrupt_book3e_0x900:
737 masked_interrupt_book3e PACA_IRQ_DEC 0
739 masked_interrupt_book3e_0x980:
741 masked_interrupt_book3e PACA_IRQ_DEC 0
743 masked_interrupt_book3e_0x280:
744 masked_interrupt_book3e_0x2c0:
745 masked_interrupt_book3e PACA_IRQ_DBELL 0
748 * Called from arch_local_irq_enable when an interrupt needs
749 * to be resent. r3 contains either 0x500,0x900,0x260 or 0x280
750 * to indicate the kind of interrupt. MSR:EE is already off.
751 * We generate a stackframe like if a real interrupt had happened.
753 * Note: While MSR:EE is off, we need to make sure that _MSR
754 * in the generated frame has EE set to 1 or the exception
755 * handler will not properly re-enable them.
757 _GLOBAL(__replay_interrupt)
758 /* We are going to jump to the exception common code which
759 * will retrieve various register values from the PACA which
760 * we don't give a damn about.
765 mtspr SPRN_SPRG_GEN_SCRATCH,r13;
766 std r1,PACA_EXGEN+EX_R1(r13);
767 stw r4,PACA_EXGEN+EX_CR(r13);
769 subi r1,r1,INT_FRAME_SIZE;
780 * This is called from 0x300 and 0x400 handlers after the prologs with
781 * r14 and r15 containing the fault address and error code, with the
782 * original values stashed away in the PACA
784 storage_fault_common:
787 addi r3,r1,STACK_FRAME_OVERHEAD
790 ld r14,PACA_EXGEN+EX_R14(r13)
791 ld r15,PACA_EXGEN+EX_R15(r13)
795 b .ret_from_except_lite
798 addi r3,r1,STACK_FRAME_OVERHEAD
804 * Alignment exception doesn't fit entirely in the 0x100 bytes so it
810 addi r3,r1,STACK_FRAME_OVERHEAD
811 ld r14,PACA_EXGEN+EX_R14(r13)
812 ld r15,PACA_EXGEN+EX_R15(r13)
815 bl .alignment_exception
819 * We branch here from entry_64.S for the last stage of the exception
820 * return code path. MSR:EE is expected to be off at that point
822 _GLOBAL(exception_return_book3e)
825 /* This is the return from load_up_fpu fast path which could do with
826 * less GPR restores in fact, but for now we have a single return path
828 .globl fast_exception_return
829 fast_exception_return:
837 ACCOUNT_CPU_USER_EXIT(r10, r11)
840 1: stdcx. r0,0,r1 /* to clear the reservation */
854 mtspr SPRN_SPRG_GEN_SCRATCH,r0
856 std r10,PACA_EXGEN+EX_R10(r13);
857 std r11,PACA_EXGEN+EX_R11(r13);
864 ld r10,PACA_EXGEN+EX_R10(r13)
865 ld r11,PACA_EXGEN+EX_R11(r13)
866 mfspr r13,SPRN_SPRG_GEN_SCRATCH
870 * Trampolines used when spotting a bad kernel stack pointer in
871 * the exception entry code.
873 * TODO: move some bits like SRR0 read to trampoline, pass PACA
874 * index around, etc... to handle crit & mcheck
876 BAD_STACK_TRAMPOLINE(0x000)
877 BAD_STACK_TRAMPOLINE(0x100)
878 BAD_STACK_TRAMPOLINE(0x200)
879 BAD_STACK_TRAMPOLINE(0x220)
880 BAD_STACK_TRAMPOLINE(0x260)
881 BAD_STACK_TRAMPOLINE(0x280)
882 BAD_STACK_TRAMPOLINE(0x2a0)
883 BAD_STACK_TRAMPOLINE(0x2c0)
884 BAD_STACK_TRAMPOLINE(0x2e0)
885 BAD_STACK_TRAMPOLINE(0x300)
886 BAD_STACK_TRAMPOLINE(0x310)
887 BAD_STACK_TRAMPOLINE(0x320)
888 BAD_STACK_TRAMPOLINE(0x340)
889 BAD_STACK_TRAMPOLINE(0x400)
890 BAD_STACK_TRAMPOLINE(0x500)
891 BAD_STACK_TRAMPOLINE(0x600)
892 BAD_STACK_TRAMPOLINE(0x700)
893 BAD_STACK_TRAMPOLINE(0x800)
894 BAD_STACK_TRAMPOLINE(0x900)
895 BAD_STACK_TRAMPOLINE(0x980)
896 BAD_STACK_TRAMPOLINE(0x9f0)
897 BAD_STACK_TRAMPOLINE(0xa00)
898 BAD_STACK_TRAMPOLINE(0xb00)
899 BAD_STACK_TRAMPOLINE(0xc00)
900 BAD_STACK_TRAMPOLINE(0xd00)
901 BAD_STACK_TRAMPOLINE(0xd08)
902 BAD_STACK_TRAMPOLINE(0xe00)
903 BAD_STACK_TRAMPOLINE(0xf00)
904 BAD_STACK_TRAMPOLINE(0xf20)
906 .globl bad_stack_book3e
908 /* XXX: Needs to make SPRN_SPRG_GEN depend on exception type */
909 mfspr r10,SPRN_SRR0; /* read SRR0 before touching stack */
910 ld r1,PACAEMERGSP(r13)
911 subi r1,r1,64+INT_FRAME_SIZE
914 ld r10,PACA_EXGEN+EX_R1(r13) /* FIXME for crit & mcheck */
915 lwz r11,PACA_EXGEN+EX_CR(r13) /* FIXME for crit & mcheck */
922 std r0,GPR0(r1); /* save r0 in stackframe */ \
923 std r2,GPR2(r1); /* save r2 in stackframe */ \
924 SAVE_4GPRS(3, r1); /* save r3 - r6 in stackframe */ \
925 SAVE_2GPRS(7, r1); /* save r7, r8 in stackframe */ \
926 std r9,GPR9(r1); /* save r9 in stackframe */ \
927 ld r3,PACA_EXGEN+EX_R10(r13);/* get back r10 */ \
928 ld r4,PACA_EXGEN+EX_R11(r13);/* get back r11 */ \
929 mfspr r5,SPRN_SPRG_GEN_SCRATCH;/* get back r13 XXX can be wrong */ \
930 std r3,GPR10(r1); /* save r10 to stackframe */ \
931 std r4,GPR11(r1); /* save r11 to stackframe */ \
932 std r12,GPR12(r1); /* save r12 in stackframe */ \
933 std r5,GPR13(r1); /* save it to stackframe */ \
942 lhz r12,PACA_TRAP_SAVE(r13)
944 addi r11,r1,INT_FRAME_SIZE
949 1: addi r3,r1,STACK_FRAME_OVERHEAD
954 * Setup the initial TLB for a core. This current implementation
955 * assume that whatever we are running off will not conflict with
956 * the new mapping at PAGE_OFFSET.
958 _GLOBAL(initial_tlb_book3e)
960 /* Look for the first TLB with IPROT set */
961 mfspr r4,SPRN_TLB0CFG
962 andi. r3,r4,TLBnCFG_IPROT
963 lis r3,MAS0_TLBSEL(0)@h
966 mfspr r4,SPRN_TLB1CFG
967 andi. r3,r4,TLBnCFG_IPROT
968 lis r3,MAS0_TLBSEL(1)@h
971 mfspr r4,SPRN_TLB2CFG
972 andi. r3,r4,TLBnCFG_IPROT
973 lis r3,MAS0_TLBSEL(2)@h
976 lis r3,MAS0_TLBSEL(3)@h
977 mfspr r4,SPRN_TLB3CFG
981 andi. r5,r4,TLBnCFG_HES
984 mflr r8 /* save LR */
985 /* 1. Find the index of the entry we're executing in
987 * r3 = MAS0_TLBSEL (for the iprot array)
990 bl invstr /* Find our address */
991 invstr: mflr r6 /* Make it accessible */
993 rlwinm r5,r7,27,31,31 /* extract MSR[IS] */
998 tlbsx 0,r6 /* search MSR[IS], SPID=PID */
1001 rlwinm r5,r3,16,20,31 /* Extract MAS0(Entry) */
1003 mfspr r7,SPRN_MAS1 /* Insure IPROT set */
1004 oris r7,r7,MAS1_IPROT@h
1008 /* 2. Invalidate all entries except the entry we're executing in
1010 * r3 = MAS0 w/TLBSEL & ESEL for the entry we are running in
1012 * r5 = ESEL of entry we are running in
1014 andi. r4,r4,TLBnCFG_N_ENTRY /* Extract # entries */
1015 li r6,0 /* Set Entry counter to 0 */
1016 1: mr r7,r3 /* Set MAS0(TLBSEL) */
1017 rlwimi r7,r6,16,4,15 /* Setup MAS0 = TLBSEL | ESEL(r6) */
1021 rlwinm r7,r7,0,2,31 /* Clear MAS1 Valid and IPROT */
1023 beq skpinv /* Dont update the current execution TLB */
1027 skpinv: addi r6,r6,1 /* Increment */
1028 cmpw r6,r4 /* Are we done? */
1029 bne 1b /* If not, repeat */
1031 /* Invalidate all TLBs */
1032 PPC_TLBILX_ALL(0,R0)
1036 /* 3. Setup a temp mapping and jump to it
1038 * r3 = MAS0 w/TLBSEL & ESEL for the entry we are running in
1039 * r5 = ESEL of entry we are running in
1041 andi. r7,r5,0x1 /* Find an entry not used and is non-zero */
1043 mr r4,r3 /* Set MAS0(TLBSEL) = 1 */
1047 rlwimi r4,r7,16,4,15 /* Setup MAS0 = TLBSEL | ESEL(r7) */
1051 xori r6,r7,MAS1_TS /* Setup TMP mapping in the other Address space */
1059 bl 1f /* Find our address */
1061 addi r6,r6,(2f - 1b)
1066 /* 4. Clear out PIDs & Search info
1068 * r3 = MAS0 w/TLBSEL & ESEL for the entry we started in
1069 * r4 = MAS0 w/TLBSEL & ESEL for the temp mapping
1076 /* 5. Invalidate mapping we started in
1078 * r3 = MAS0 w/TLBSEL & ESEL for the entry we started in
1079 * r4 = MAS0 w/TLBSEL & ESEL for the temp mapping
1085 rlwinm r6,r6,0,2,31 /* clear IPROT and VALID */
1091 /* The mapping only needs to be cache-coherent on SMP */
1093 #define M_IF_SMP MAS2_M
1098 /* 6. Setup KERNELBASE mapping in TLB[0]
1100 * r3 = MAS0 w/TLBSEL & ESEL for the entry we started in
1101 * r4 = MAS0 w/TLBSEL & ESEL for the temp mapping
1104 rlwinm r3,r3,0,16,3 /* clear ESEL */
1106 lis r6,(MAS1_VALID|MAS1_IPROT)@h
1107 ori r6,r6,(MAS1_TSIZE(BOOK3E_PAGESZ_1GB))@l
1110 LOAD_REG_IMMEDIATE(r6, PAGE_OFFSET | M_IF_SMP)
1114 ori r5,r5,MAS3_SR | MAS3_SW | MAS3_SX
1121 /* 7. Jump to KERNELBASE mapping
1123 * r4 = MAS0 w/TLBSEL & ESEL for the temp mapping
1125 /* Now we branch the new virtual address mapped by this entry */
1126 LOAD_REG_IMMEDIATE(r6,2f)
1128 ori r7,r7,MSR_KERNEL@l
1131 rfi /* start execution out of TLB1[0] entry */
1134 /* 8. Clear out the temp mapping
1136 * r4 = MAS0 w/TLBSEL & ESEL for the entry we are running in
1141 rlwinm r5,r5,0,2,31 /* clear IPROT and VALID */
1147 /* We translate LR and return */
1153 /* Setup MAS 0,1,2,3 and 7 for tlbwe of a 1G entry that maps the
1154 * kernel linear mapping. We also set MAS8 once for all here though
1155 * that will have to be made dependent on whether we are running under
1156 * a hypervisor I suppose.
1160 * This code is called as an ordinary function on the boot CPU. But to
1161 * avoid duplication, this code is also used in SCOM bringup of
1162 * secondary CPUs. We read the code between the initial_tlb_code_start
1163 * and initial_tlb_code_end labels one instruction at a time and RAM it
1164 * into the new core via SCOM. That doesn't process branches, so there
1165 * must be none between those two labels. It also means if this code
1166 * ever takes any parameters, the SCOM code must also be updated to
1169 .globl a2_tlbinit_code_start
1170 a2_tlbinit_code_start:
1172 ori r11,r3,MAS0_WQ_ALLWAYS
1173 oris r11,r11,MAS0_ESEL(3)@h /* Use way 3: workaround A2 erratum 376 */
1175 lis r3,(MAS1_VALID | MAS1_IPROT)@h
1176 ori r3,r3,BOOK3E_PAGESZ_1GB << MAS1_TSIZE_SHIFT
1178 LOAD_REG_IMMEDIATE(r3, PAGE_OFFSET | MAS2_M)
1180 li r3,MAS3_SR | MAS3_SW | MAS3_SX
1181 mtspr SPRN_MAS7_MAS3,r3
1185 /* Write the TLB entry */
1188 .globl a2_tlbinit_after_linear_map
1189 a2_tlbinit_after_linear_map:
1191 /* Now we branch the new virtual address mapped by this entry */
1192 LOAD_REG_IMMEDIATE(r3,1f)
1196 1: /* We are now running at PAGE_OFFSET, clean the TLB of everything
1197 * else (including IPROTed things left by firmware)
1199 * r3 = current address (more or less)
1206 rlwinm r9,r4,0,TLBnCFG_N_ENTRY
1207 rlwinm r10,r4,8,0xff
1208 addi r10,r10,-1 /* Get inner loop mask */
1213 rlwinm r5,r5,0,(~(MAS1_VALID|MAS1_IPROT))
1216 rldicr r6,r6,0,51 /* Extract EPN */
1219 rlwinm r7,r7,0,0xffff0fff /* Clear HES and WQ */
1221 rlwinm r8,r7,16,0xfff /* Extract ESEL */
1226 rlwimi r7,r4,16,MAS0_ESEL_MASK
1237 addis r6,r6,(1<<30)@h
1242 .globl a2_tlbinit_after_iprot_flush
1243 a2_tlbinit_after_iprot_flush:
1245 #ifdef CONFIG_PPC_EARLY_DEBUG_WSP
1246 /* Now establish early debug mappings if applicable */
1247 /* Restore the MAS0 we used for linear mapping load */
1250 lis r3,(MAS1_VALID | MAS1_IPROT)@h
1251 ori r3,r3,(BOOK3E_PAGESZ_4K << MAS1_TSIZE_SHIFT)
1253 LOAD_REG_IMMEDIATE(r3, WSP_UART_VIRT | MAS2_I | MAS2_G)
1255 LOAD_REG_IMMEDIATE(r3, WSP_UART_PHYS | MAS3_SR | MAS3_SW)
1256 mtspr SPRN_MAS7_MAS3,r3
1257 /* re-use the MAS8 value from the linear mapping */
1259 #endif /* CONFIG_PPC_EARLY_DEBUG_WSP */
1265 .globl a2_tlbinit_code_end
1266 a2_tlbinit_code_end:
1268 /* We translate LR and return */
1275 * Main entry (boot CPU, thread 0)
1277 * We enter here from head_64.S, possibly after the prom_init trampoline
1278 * with r3 and r4 already saved to r31 and 30 respectively and in 64 bits
1279 * mode. Anything else is as it was left by the bootloader
1281 * Initial requirements of this port:
1283 * - Kernel loaded at 0 physical
1284 * - A good lump of memory mapped 0:0 by UTLB entry 0
1285 * - MSR:IS & MSR:DS set to 0
1287 * Note that some of the above requirements will be relaxed in the future
1288 * as the kernel becomes smarter at dealing with different initial conditions
1289 * but for now you have to be careful
1291 _GLOBAL(start_initialization_book3e)
1294 /* First, we need to setup some initial TLBs to map the kernel
1295 * text, data and bss at PAGE_OFFSET. We don't have a real mode
1296 * and always use AS 0, so we just set it up to match our link
1297 * address and never use 0 based addresses.
1299 bl .initial_tlb_book3e
1301 /* Init global core bits */
1302 bl .init_core_book3e
1304 /* Init per-thread bits */
1305 bl .init_thread_book3e
1307 /* Return to common init code */
1314 * Secondary core/processor entry
1316 * This is entered for thread 0 of a secondary core, all other threads
1317 * are expected to be stopped. It's similar to start_initialization_book3e
1318 * except that it's generally entered from the holding loop in head_64.S
1319 * after CPUs have been gathered by Open Firmware.
1321 * We assume we are in 32 bits mode running with whatever TLB entry was
1322 * set for us by the firmware or POR engine.
1324 _GLOBAL(book3e_secondary_core_init_tlb_set)
1326 b .generic_secondary_smp_init
1328 _GLOBAL(book3e_secondary_core_init)
1331 /* Do we need to setup initial TLB entry ? */
1335 /* Setup TLB for this core */
1336 bl .initial_tlb_book3e
1338 /* We can return from the above running at a different
1339 * address, so recalculate r2 (TOC)
1343 /* Init global core bits */
1344 2: bl .init_core_book3e
1346 /* Init per-thread bits */
1347 3: bl .init_thread_book3e
1349 /* Return to common init code at proper virtual address.
1351 * Due to various previous assumptions, we know we entered this
1352 * function at either the final PAGE_OFFSET mapping or using a
1353 * 1:1 mapping at 0, so we don't bother doing a complicated check
1354 * here, we just ensure the return address has the right top bits.
1356 * Note that if we ever want to be smarter about where we can be
1357 * started from, we have to be careful that by the time we reach
1358 * the code below we may already be running at a different location
1359 * than the one we were called from since initial_tlb_book3e can
1360 * have moved us already.
1364 lis r3,PAGE_OFFSET@highest
1370 _GLOBAL(book3e_secondary_thread_init)
1374 _STATIC(init_core_book3e)
1375 /* Establish the interrupt vector base */
1376 LOAD_REG_IMMEDIATE(r3, interrupt_base_book3e)
1381 _STATIC(init_thread_book3e)
1382 lis r3,(SPRN_EPCR_ICM | SPRN_EPCR_GICM)@h
1385 /* Make sure interrupts are off */
1388 /* disable all timers and clear out status */
1396 _GLOBAL(__setup_base_ivors)
1397 SET_IVOR(0, 0x020) /* Critical Input */
1398 SET_IVOR(1, 0x000) /* Machine Check */
1399 SET_IVOR(2, 0x060) /* Data Storage */
1400 SET_IVOR(3, 0x080) /* Instruction Storage */
1401 SET_IVOR(4, 0x0a0) /* External Input */
1402 SET_IVOR(5, 0x0c0) /* Alignment */
1403 SET_IVOR(6, 0x0e0) /* Program */
1404 SET_IVOR(7, 0x100) /* FP Unavailable */
1405 SET_IVOR(8, 0x120) /* System Call */
1406 SET_IVOR(9, 0x140) /* Auxiliary Processor Unavailable */
1407 SET_IVOR(10, 0x160) /* Decrementer */
1408 SET_IVOR(11, 0x180) /* Fixed Interval Timer */
1409 SET_IVOR(12, 0x1a0) /* Watchdog Timer */
1410 SET_IVOR(13, 0x1c0) /* Data TLB Error */
1411 SET_IVOR(14, 0x1e0) /* Instruction TLB Error */
1412 SET_IVOR(15, 0x040) /* Debug */
1418 _GLOBAL(setup_altivec_ivors)
1419 SET_IVOR(32, 0x200) /* AltiVec Unavailable */
1420 SET_IVOR(33, 0x220) /* AltiVec Assist */
1423 _GLOBAL(setup_perfmon_ivor)
1424 SET_IVOR(35, 0x260) /* Performance Monitor */
1427 _GLOBAL(setup_doorbell_ivors)
1428 SET_IVOR(36, 0x280) /* Processor Doorbell */
1429 SET_IVOR(37, 0x2a0) /* Processor Doorbell Crit */
1432 _GLOBAL(setup_ehv_ivors)
1433 SET_IVOR(40, 0x300) /* Embedded Hypervisor System Call */
1434 SET_IVOR(41, 0x320) /* Embedded Hypervisor Privilege */
1435 SET_IVOR(38, 0x2c0) /* Guest Processor Doorbell */
1436 SET_IVOR(39, 0x2e0) /* Guest Processor Doorbell Crit/MC */
1439 _GLOBAL(setup_lrat_ivor)
1440 SET_IVOR(42, 0x340) /* LRAT Error */