powerpc/kernel/head_40x.S

84 	. = 0xc0
110 	stw	r10,crit_r10@l(0)	/* save two registers to work with */
111 	stw	r11,crit_r11@l(0)
114 	stw	r10,crit_srr0@l(0)
115 	stw	r11,crit_srr1@l(0)
118 	stw	r10,crit_dear@l(0)
119 	stw	r11,crit_esr@l(0)
129 1:	stw	r1,crit_r1@l(0)
141 	lwz	r11,crit_r1@l(0)
143 	stw	r11,0(r1)
161 	rlwinm	r9,r9,0,14,12		/* clear MSR_WE (necessary?)	   */
190  * 0x0100 - Critical Interrupt Exception
192 	CRITICAL_EXCEPTION(0x0100, CriticalInterrupt, unknown_exception)
195  * 0x0200 - Machine Check Exception
197 	CRITICAL_EXCEPTION(0x0200, MachineCheck, machine_check_exception)
200  * 0x0300 - Data Storage Exception
206 	START_EXCEPTION(0x0300,	DataStorage)
207 	EXCEPTION_PROLOG 0x300 DataStorage handle_dar_dsisr=1
213  * 0x0400 - Instruction Storage Exception
216 	START_EXCEPTION(0x0400, InstructionAccess)
217 	EXCEPTION_PROLOG 0x400 InstructionAccess
218 	li	r5,0
225 /* 0x0500 - External Interrupt Exception */
226 	EXCEPTION(0x0500, HardwareInterrupt, do_IRQ)
228 /* 0x0600 - Alignment Exception */
229 	START_EXCEPTION(0x0600, Alignment)
230 	EXCEPTION_PROLOG 0x600 Alignment handle_dar_dsisr=1
236 /* 0x0700 - Program Exception */
237 	START_EXCEPTION(0x0700, ProgramCheck)
238 	EXCEPTION_PROLOG 0x700 ProgramCheck handle_dar_dsisr=1
244 	EXCEPTION(0x0800, Trap_08, unknown_exception)
245 	EXCEPTION(0x0900, Trap_09, unknown_exception)
246 	EXCEPTION(0x0A00, Trap_0A, unknown_exception)
247 	EXCEPTION(0x0B00, Trap_0B, unknown_exception)
249 /* 0x0C00 - System Call Exception */
250 	START_EXCEPTION(0x0C00,	SystemCall)
251 	SYSCALL_ENTRY	0xc00
254 /*	EXCEPTION(0x0D00, Trap_0D, unknown_exception) */
255 	EXCEPTION(0x0E00, Trap_0E, unknown_exception)
256 	EXCEPTION(0x0F00, Trap_0F, unknown_exception)
258 /* 0x1000 - Programmable Interval Timer (PIT) Exception */
259 	START_EXCEPTION(0x1000, DecrementerTrap)
262 /* 0x1010 - Fixed Interval Timer (FIT) Exception */
263 	START_EXCEPTION(0x1010, FITExceptionTrap)
266 /* 0x1020 - Watchdog Timer (WDT) Exception */
267 	START_EXCEPTION(0x1020, WDTExceptionTrap)
270 /* 0x1100 - Data TLB Miss Exception
275 	START_EXCEPTION(0x1100,	DTLBMiss)
282 	rlwimi	r12, r9, 0, 0xff
293 	li	r9, 0
294 	mtspr	SPRN_PID, r9		/* TLB will have 0 TID */
303 	rlwinm.	r9, r9, 0, 0xff
309 	lwz	r11, 0(r11)		/* Get L1 entry */
314 	lwz	r11, 0(r11)		/* Get Linux PTE */
321 	rlwimi	r11, r9, 0, _PAGE_RW	/* replace rw by hwwrite */
326 	li	r9, 0x00c0
327 	rlwimi	r10, r9, 0, 20, 31
338 	ori	r9, r9, 0x40
339 	rlwimi	r10, r9, 0, 20, 31
348 	mtcrf	0x80, r12
355 /* 0x1200 - Instruction TLB Miss Exception
359 	START_EXCEPTION(0x1200,	ITLBMiss)
366 	rlwimi	r12, r9, 0, 0xff
377 	li	r9, 0
378 	mtspr	SPRN_PID, r9		/* TLB will have 0 TID */
387 	rlwinm.	r9, r9, 0, 0xff
393 	lwz	r11, 0(r11)		/* Get L1 entry */
398 	lwz	r11, 0(r11)		/* Get Linux PTE */
405 	rlwimi	r11, r9, 0, _PAGE_RW	/* replace rw by hwwrite */
410 	li	r9, 0x00c0
411 	rlwimi	r10, r9, 0, 20, 31
422 	ori	r9, r9, 0x40
423 	rlwimi	r10, r9, 0, 20, 31
432 	mtcrf	0x80, r12
439 	EXCEPTION(0x1300, Trap_13, unknown_exception)
440 	EXCEPTION(0x1400, Trap_14, unknown_exception)
441 	EXCEPTION(0x1500, Trap_15, unknown_exception)
442 	EXCEPTION(0x1600, Trap_16, unknown_exception)
443 	EXCEPTION(0x1700, Trap_17, unknown_exception)
444 	EXCEPTION(0x1800, Trap_18, unknown_exception)
445 	EXCEPTION(0x1900, Trap_19, unknown_exception)
446 	EXCEPTION(0x1A00, Trap_1A, unknown_exception)
447 	EXCEPTION(0x1B00, Trap_1B, unknown_exception)
448 	EXCEPTION(0x1C00, Trap_1C, unknown_exception)
449 	EXCEPTION(0x1D00, Trap_1D, unknown_exception)
450 	EXCEPTION(0x1E00, Trap_1E, unknown_exception)
451 	EXCEPTION(0x1F00, Trap_1F, unknown_exception)
466 	/* 0x2000 - Debug Exception */
467 	START_EXCEPTION(0x2000, DebugTrap)
468 	CRITICAL_EXCEPTION_PROLOG 0x2000 DebugTrap
486 	cmplwi  r10,0x2100
490 1:	rlwinm	r9,r9,0,~MSR_DE		/* clear DE in the SRR3 value */
497 	mtcrf	0x80,r10
502 	lwz	r10,crit_r10@l(0)
503 	lwz	r11,crit_r11@l(0)
514 	/* Programmable Interval Timer (PIT) Exception. (from 0x1000) */
517 	EXCEPTION_PROLOG 0x1000 Decrementer
524 	/* Fixed Interval Timer (FIT) Exception. (from 0x1010) */
527 	EXCEPTION_PROLOG 0x1010 FITException
532 	/* Watchdog Timer (WDT) Exception. (from 0x1020) */
535 	CRITICAL_EXCEPTION_PROLOG 0x1020 WDTException
541  * have vectors from 0x2100 through 0x2F00 defined, but marked as reserved.
559 	.long	0
566 	li	r9, 0x0ce2
570 	lwz	r9, tlb_4xx_index@l(0)
573 	stw	r9, tlb_4xx_index@l(0)
581 	mtcrf	0x80, r12
605 	li	r0,0
616 	li	r3,0
648 	stw	r5, 0xf0(0)	/* Must match your Abatron config file */
650 	stw	r6, 0(r5)
670 	/* We should still be executing code at physical address 0x0000xxxx
672 	 * 0xC000xxxx. So, set up a TLB mapping to cover this once
684 	li	r0,0