2 * Copyright 2004, 2007-2012 Freescale Semiconductor, Inc.
3 * Copyright (C) 2003 Motorola,Inc.
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
24 /* U-Boot Startup Code for Motorola 85xx PowerPC based Embedded Boards
26 * The processor starts at 0xfffffffc and the code is first executed in the
27 * last 4K page(0xfffff000-0xffffffff) in flash/rom.
31 #include <asm-offsets.h>
36 #define _LINUX_CONFIG_H 1 /* avoid reading Linux autoconf.h file */
38 #include <ppc_asm.tmpl>
41 #include <asm/cache.h>
45 #define MSR_KERNEL ( MSR_ME ) /* Machine Check */
47 #if defined(CONFIG_NAND_SPL) || \
48 (defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_INIT_MINIMAL))
52 #if !defined(CONFIG_SPL) && !defined(CONFIG_SYS_RAMBOOT) && !defined(CONFIG_SECURE_BOOT)
57 * Set up GOT: Global Offset Table
59 * Use r12 to access the GOT
62 GOT_ENTRY(_GOT2_TABLE_)
63 GOT_ENTRY(_FIXUP_TABLE_)
67 GOT_ENTRY(_start_of_vectors)
68 GOT_ENTRY(_end_of_vectors)
69 GOT_ENTRY(transfer_to_handler)
74 GOT_ENTRY(__bss_start)
78 * e500 Startup -- after reset only the last 4KB of the effective
79 * address space is mapped in the MMU L2 TLB1 Entry0. The .bootpg
80 * section is located at THIS LAST page and basically does three
81 * things: clear some registers, set up exception tables and
82 * add more TLB entries for 'larger spaces'(e.g. the boot rom) to
83 * continue the boot procedure.
85 * Once the boot rom is mapped by TLB entries we can proceed
86 * with normal startup.
94 /* Enable debug exception */
98 #ifdef CONFIG_SYS_FSL_ERRATUM_A004510
101 li r4,CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV
105 #ifdef CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV2
106 li r4,CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV2
111 /* Not a supported revision affected by erratum */
115 1: li r27,1 /* Remember for later that we have the erratum */
116 /* Erratum says set bits 55:60 to 001001 */
127 #if defined(CONFIG_SECURE_BOOT) && defined(CONFIG_E500MC)
128 /* ISBC uses L2 as stack.
129 * Disable L2 cache here so that u-boot can enable it later
130 * as part of it's normal flow
133 /* Check if L2 is enabled */
134 mfspr r3, SPRN_L2CSR0
136 ori r2, r2, L2CSR0_L2E@l
140 mfspr r3, SPRN_L2CSR0
142 lis r2,(L2CSR0_L2FL)@h
143 ori r2, r2, (L2CSR0_L2FL)@l
150 mfspr r3, SPRN_L2CSR0
154 mfspr r3, SPRN_L2CSR0
156 ori r2, r2, L2CSR0_L2E@l
166 /* clear registers/arrays not reset by hardware */
170 mtspr L1CSR0,r0 /* invalidate d-cache */
171 mtspr L1CSR1,r0 /* invalidate i-cache */
174 mtspr DBSR,r1 /* Clear all valid bits */
177 .macro create_tlb1_entry esel ts tsize epn wimg rpn perm phy_high scratch
178 lis \scratch, FSL_BOOKE_MAS0(1, \esel, 0)@h
179 ori \scratch, \scratch, FSL_BOOKE_MAS0(1, \esel, 0)@l
181 lis \scratch, FSL_BOOKE_MAS1(1, 1, 0, \ts, \tsize)@h
182 ori \scratch, \scratch, FSL_BOOKE_MAS1(1, 1, 0, \ts, \tsize)@l
184 lis \scratch, FSL_BOOKE_MAS2(\epn, \wimg)@h
185 ori \scratch, \scratch, FSL_BOOKE_MAS2(\epn, \wimg)@l
187 lis \scratch, FSL_BOOKE_MAS3(\rpn, 0, \perm)@h
188 ori \scratch, \scratch, FSL_BOOKE_MAS3(\rpn, 0, \perm)@l
190 lis \scratch, \phy_high@h
191 ori \scratch, \scratch, \phy_high@l
199 .macro create_tlb0_entry esel ts tsize epn wimg rpn perm phy_high scratch
200 lis \scratch, FSL_BOOKE_MAS0(0, \esel, 0)@h
201 ori \scratch, \scratch, FSL_BOOKE_MAS0(0, \esel, 0)@l
203 lis \scratch, FSL_BOOKE_MAS1(1, 0, 0, \ts, \tsize)@h
204 ori \scratch, \scratch, FSL_BOOKE_MAS1(1, 0, 0, \ts, \tsize)@l
206 lis \scratch, FSL_BOOKE_MAS2(\epn, \wimg)@h
207 ori \scratch, \scratch, FSL_BOOKE_MAS2(\epn, \wimg)@l
209 lis \scratch, FSL_BOOKE_MAS3(\rpn, 0, \perm)@h
210 ori \scratch, \scratch, FSL_BOOKE_MAS3(\rpn, 0, \perm)@l
212 lis \scratch, \phy_high@h
213 ori \scratch, \scratch, \phy_high@l
221 .macro delete_tlb1_entry esel scratch
222 lis \scratch, FSL_BOOKE_MAS0(1, \esel, 0)@h
223 ori \scratch, \scratch, FSL_BOOKE_MAS0(1, \esel, 0)@l
233 .macro delete_tlb0_entry esel epn wimg scratch
234 lis \scratch, FSL_BOOKE_MAS0(0, \esel, 0)@h
235 ori \scratch, \scratch, FSL_BOOKE_MAS0(0, \esel, 0)@l
239 lis \scratch, FSL_BOOKE_MAS2(\epn, \wimg)@h
240 ori \scratch, \scratch, FSL_BOOKE_MAS2(\epn, \wimg)@l
248 /* Interrupt vectors do not fit in minimal SPL. */
249 #if !defined(MINIMAL_SPL)
250 /* Setup interrupt vectors */
251 lis r1,CONFIG_SYS_MONITOR_BASE@h
254 lis r3,(CONFIG_SYS_MONITOR_BASE & 0xffff)@h
255 ori r3,r3,(CONFIG_SYS_MONITOR_BASE & 0xffff)@l
257 addi r4,r3,CriticalInput - _start + _START_OFFSET
258 mtspr IVOR0,r4 /* 0: Critical input */
259 addi r4,r3,MachineCheck - _start + _START_OFFSET
260 mtspr IVOR1,r4 /* 1: Machine check */
261 addi r4,r3,DataStorage - _start + _START_OFFSET
262 mtspr IVOR2,r4 /* 2: Data storage */
263 addi r4,r3,InstStorage - _start + _START_OFFSET
264 mtspr IVOR3,r4 /* 3: Instruction storage */
265 addi r4,r3,ExtInterrupt - _start + _START_OFFSET
266 mtspr IVOR4,r4 /* 4: External interrupt */
267 addi r4,r3,Alignment - _start + _START_OFFSET
268 mtspr IVOR5,r4 /* 5: Alignment */
269 addi r4,r3,ProgramCheck - _start + _START_OFFSET
270 mtspr IVOR6,r4 /* 6: Program check */
271 addi r4,r3,FPUnavailable - _start + _START_OFFSET
272 mtspr IVOR7,r4 /* 7: floating point unavailable */
273 addi r4,r3,SystemCall - _start + _START_OFFSET
274 mtspr IVOR8,r4 /* 8: System call */
275 /* 9: Auxiliary processor unavailable(unsupported) */
276 addi r4,r3,Decrementer - _start + _START_OFFSET
277 mtspr IVOR10,r4 /* 10: Decrementer */
278 addi r4,r3,IntervalTimer - _start + _START_OFFSET
279 mtspr IVOR11,r4 /* 11: Interval timer */
280 addi r4,r3,WatchdogTimer - _start + _START_OFFSET
281 mtspr IVOR12,r4 /* 12: Watchdog timer */
282 addi r4,r3,DataTLBError - _start + _START_OFFSET
283 mtspr IVOR13,r4 /* 13: Data TLB error */
284 addi r4,r3,InstructionTLBError - _start + _START_OFFSET
285 mtspr IVOR14,r4 /* 14: Instruction TLB error */
286 addi r4,r3,DebugBreakpoint - _start + _START_OFFSET
287 mtspr IVOR15,r4 /* 15: Debug */
290 /* Clear and set up some registers. */
293 mtspr DEC,r0 /* prevent dec exceptions */
294 mttbl r0 /* prevent fit & wdt exceptions */
296 mtspr TSR,r1 /* clear all timer exception status */
297 mtspr TCR,r0 /* disable all */
298 mtspr ESR,r0 /* clear exception syndrome register */
299 mtspr MCSR,r0 /* machine check syndrome register */
300 mtxer r0 /* clear integer exception register */
302 #ifdef CONFIG_SYS_BOOK3E_HV
303 mtspr MAS8,r0 /* make sure MAS8 is clear */
306 /* Enable Time Base and Select Time Base Clock */
307 lis r0,HID0_EMCP@h /* Enable machine check */
308 #if defined(CONFIG_ENABLE_36BIT_PHYS)
309 ori r0,r0,HID0_ENMAS7@l /* Enable MAS7 */
311 #ifndef CONFIG_E500MC
312 ori r0,r0,HID0_TBEN@l /* Enable Timebase */
316 #ifndef CONFIG_E500MC
317 li r0,(HID1_ASTME|HID1_ABE)@l /* Addr streaming & broadcast */
320 cmpwi r3,0x50@l /* if we are rev 5.0 or greater set MBDD */
322 /* Set MBDD bit also */
323 ori r0, r0, HID1_MBDD@l
328 #ifdef CONFIG_SYS_FSL_ERRATUM_CPU_A003999
334 /* Enable Branch Prediction */
335 #if defined(CONFIG_BTB)
336 lis r0,BUCSR_ENABLE@h
337 ori r0,r0,BUCSR_ENABLE@l
341 #if defined(CONFIG_SYS_INIT_DBCR)
344 mtspr DBSR,r1 /* Clear all status bits */
345 lis r0,CONFIG_SYS_INIT_DBCR@h /* DBCR0[IDM] must be set */
346 ori r0,r0,CONFIG_SYS_INIT_DBCR@l
350 #ifdef CONFIG_MPC8569
351 #define CONFIG_SYS_LBC_ADDR (CONFIG_SYS_CCSRBAR_DEFAULT + 0x5000)
352 #define CONFIG_SYS_LBCR_ADDR (CONFIG_SYS_LBC_ADDR + 0xd0)
354 /* MPC8569 Rev.0 silcon needs to set bit 13 of LBCR to allow elBC to
355 * use address space which is more than 12bits, and it must be done in
356 * the 4K boot page. So we set this bit here.
359 /* create a temp mapping TLB0[0] for LBCR */
360 create_tlb0_entry 0, \
361 0, BOOKE_PAGESZ_4K, \
362 CONFIG_SYS_LBC_ADDR, MAS2_I|MAS2_G, \
363 CONFIG_SYS_LBC_ADDR, MAS3_SW|MAS3_SR, \
366 /* Set LBCR register */
367 lis r4,CONFIG_SYS_LBCR_ADDR@h
368 ori r4,r4,CONFIG_SYS_LBCR_ADDR@l
370 lis r5,CONFIG_SYS_LBC_LBCR@h
371 ori r5,r5,CONFIG_SYS_LBC_LBCR@l
375 /* invalidate this temp TLB */
376 lis r4,CONFIG_SYS_LBC_ADDR@h
377 ori r4,r4,CONFIG_SYS_LBC_ADDR@l
381 #endif /* CONFIG_MPC8569 */
384 * Search for the TLB that covers the code we're executing, and shrink it
385 * so that it covers only this 4K page. That will ensure that any other
386 * TLB we create won't interfere with it. We assume that the TLB exists,
387 * which is why we don't check the Valid bit of MAS1. We also assume
390 * This is necessary, for example, when booting from the on-chip ROM,
391 * which (oddly) creates a single 4GB TLB that covers CCSR and DDR.
393 bl nexti /* Find our address */
394 nexti: mflr r1 /* R1 = our PC */
396 mtspr MAS6, r2 /* Assume the current PID and AS are 0 */
399 tlbsx 0, r1 /* This must succeed */
401 mfspr r14, MAS0 /* Save ESEL for later */
402 rlwinm r14, r14, 16, 0xfff
404 /* Set the size of the TLB to 4KB */
407 andc r3, r3, r2 /* Clear the TSIZE bits */
408 ori r3, r3, MAS1_TSIZE(BOOKE_PAGESZ_4K)@l
409 oris r3, r3, MAS1_IPROT@h
413 * Set the base address of the TLB to our PC. We assume that
414 * virtual == physical. We also assume that MAS2_EPN == MAS3_RPN.
417 ori r3, r3, MAS2_EPN@l /* R3 = MAS2_EPN */
419 and r1, r1, r3 /* Our PC, rounded down to the nearest page */
424 #ifdef CONFIG_SYS_FSL_ERRATUM_A004510
427 andi. r15, r2, MAS2_I|MAS2_G /* save the old I/G for later */
428 rlwinm r2, r2, 0, ~MAS2_I
432 mtspr MAS2, r2 /* Set the EPN to our PC base address */
437 mtspr MAS3, r2 /* Set the RPN to our PC base address */
444 * Clear out any other TLB entries that may exist, to avoid conflicts.
445 * Our TLB entry is in r14.
447 li r0, TLBIVAX_ALL | TLBIVAX_TLB0
451 mfspr r4, SPRN_TLB1CFG
452 rlwinm r4, r4, 0, TLBnCFG_NENTRY_MASK
457 rlwinm r5, r3, 16, MAS0_ESEL_MSK
459 beq 2f /* skip the entry we're executing from */
461 oris r5, r5, MAS0_TLBSEL(1)@h
472 #if defined(CONFIG_SYS_PPC_E500_DEBUG_TLB) && !defined(MINIMAL_SPL)
474 * TLB entry for debuggging in AS1
475 * Create temporary TLB entry in AS0 to handle debug exception
476 * As on debug exception MSR is cleared i.e. Address space is changed
477 * to 0. A TLB entry (in AS0) is required to handle debug exception generated
483 * TLB entry is created for IVPR + IVOR15 to map on valid OP code address
484 * bacause flash's virtual address maps to 0xff800000 - 0xffffffff.
485 * and this window is outside of 4K boot window.
487 create_tlb1_entry CONFIG_SYS_PPC_E500_DEBUG_TLB, \
488 0, BOOKE_PAGESZ_4M, \
489 CONFIG_SYS_MONITOR_BASE & 0xffc00000, MAS2_I|MAS2_G, \
490 0xffc00000, MAS3_SX|MAS3_SW|MAS3_SR, \
493 #elif !defined(CONFIG_SYS_RAMBOOT) && defined(CONFIG_SECURE_BOOT)
494 create_tlb1_entry CONFIG_SYS_PPC_E500_DEBUG_TLB, \
495 0, BOOKE_PAGESZ_1M, \
496 CONFIG_SYS_MONITOR_BASE, MAS2_I|MAS2_G, \
497 CONFIG_SYS_PBI_FLASH_WINDOW, MAS3_SX|MAS3_SW|MAS3_SR, \
501 * TLB entry is created for IVPR + IVOR15 to map on valid OP code address
502 * because "nexti" will resize TLB to 4K
504 create_tlb1_entry CONFIG_SYS_PPC_E500_DEBUG_TLB, \
505 0, BOOKE_PAGESZ_256K, \
506 CONFIG_SYS_MONITOR_BASE & 0xfffc0000, MAS2_I, \
507 CONFIG_SYS_MONITOR_BASE & 0xfffc0000, MAS3_SX|MAS3_SW|MAS3_SR, \
513 * Relocate CCSR, if necessary. We relocate CCSR if (obviously) the default
514 * location is not where we want it. This typically happens on a 36-bit
515 * system, where we want to move CCSR to near the top of 36-bit address space.
517 * To move CCSR, we create two temporary TLBs, one for the old location, and
518 * another for the new location. On CoreNet systems, we also need to create
519 * a special, temporary LAW.
521 * As a general rule, TLB0 is used for short-term TLBs, and TLB1 is used for
522 * long-term TLBs, so we use TLB0 here.
524 #if (CONFIG_SYS_CCSRBAR_DEFAULT != CONFIG_SYS_CCSRBAR_PHYS)
526 #if !defined(CONFIG_SYS_CCSRBAR_PHYS_HIGH) || !defined(CONFIG_SYS_CCSRBAR_PHYS_LOW)
527 #error "CONFIG_SYS_CCSRBAR_PHYS_HIGH and CONFIG_SYS_CCSRBAR_PHYS_LOW) must be defined."
532 * Create a TLB for the new location of CCSR. Register R8 is reserved
533 * for the virtual address of this TLB (CONFIG_SYS_CCSRBAR).
535 lis r8, CONFIG_SYS_CCSRBAR@h
536 ori r8, r8, CONFIG_SYS_CCSRBAR@l
537 lis r9, (CONFIG_SYS_CCSRBAR + 0x1000)@h
538 ori r9, r9, (CONFIG_SYS_CCSRBAR + 0x1000)@l
539 create_tlb0_entry 0, \
540 0, BOOKE_PAGESZ_4K, \
541 CONFIG_SYS_CCSRBAR, MAS2_I|MAS2_G, \
542 CONFIG_SYS_CCSRBAR_PHYS_LOW, MAS3_SW|MAS3_SR, \
543 CONFIG_SYS_CCSRBAR_PHYS_HIGH, r3
545 * Create a TLB for the current location of CCSR. Register R9 is reserved
546 * for the virtual address of this TLB (CONFIG_SYS_CCSRBAR + 0x1000).
549 create_tlb0_entry 1, \
550 0, BOOKE_PAGESZ_4K, \
551 CONFIG_SYS_CCSRBAR + 0x1000, MAS2_I|MAS2_G, \
552 CONFIG_SYS_CCSRBAR_DEFAULT, MAS3_SW|MAS3_SR, \
553 0, r3 /* The default CCSR address is always a 32-bit number */
557 * We have a TLB for what we think is the current (old) CCSR. Let's
558 * verify that, otherwise we won't be able to move it.
559 * CONFIG_SYS_CCSRBAR_DEFAULT is always a 32-bit number, so we only
560 * need to compare the lower 32 bits of CCSRBAR on CoreNet systems.
563 lis r0, CONFIG_SYS_CCSRBAR_DEFAULT@h
564 ori r0, r0, CONFIG_SYS_CCSRBAR_DEFAULT@l
565 #ifdef CONFIG_FSL_CORENET
566 lwz r1, 4(r9) /* CCSRBARL */
568 lwz r1, 0(r9) /* CCSRBAR, shifted right by 12 */
575 * If the value we read from CCSRBARL is not what we expect, then
576 * enter an infinite loop. This will at least allow a debugger to
577 * halt execution and examine TLBs, etc. There's no point in going
581 bne infinite_debug_loop
583 #ifdef CONFIG_FSL_CORENET
585 #define CCSR_LAWBARH0 (CONFIG_SYS_CCSRBAR + 0x1000)
586 #define LAW_EN 0x80000000
587 #define LAW_SIZE_4K 0xb
588 #define CCSRBAR_LAWAR (LAW_EN | (0x1e << 20) | LAW_SIZE_4K)
589 #define CCSRAR_C 0x80000000 /* Commit */
593 * On CoreNet systems, we create the temporary LAW using a special LAW
594 * target ID of 0x1e. LAWBARH is at offset 0xc00 in CCSR.
596 lis r0, CONFIG_SYS_CCSRBAR_PHYS_HIGH@h
597 ori r0, r0, CONFIG_SYS_CCSRBAR_PHYS_HIGH@l
598 lis r1, CONFIG_SYS_CCSRBAR_PHYS_LOW@h
599 ori r1, r1, CONFIG_SYS_CCSRBAR_PHYS_LOW@l
600 lis r2, CCSRBAR_LAWAR@h
601 ori r2, r2, CCSRBAR_LAWAR@l
603 stw r0, 0xc00(r9) /* LAWBARH0 */
604 stw r1, 0xc04(r9) /* LAWBARL0 */
606 stw r2, 0xc08(r9) /* LAWAR0 */
609 * Read back from LAWAR to ensure the update is complete. e500mc
610 * cores also require an isync.
612 lwz r0, 0xc08(r9) /* LAWAR0 */
616 * Read the current CCSRBARH and CCSRBARL using load word instructions.
617 * Follow this with an isync instruction. This forces any outstanding
618 * accesses to configuration space to completion.
621 lwz r0, 0(r9) /* CCSRBARH */
622 lwz r0, 4(r9) /* CCSRBARL */
626 * Write the new values for CCSRBARH and CCSRBARL to their old
627 * locations. The CCSRBARH has a shadow register. When the CCSRBARH
628 * has a new value written it loads a CCSRBARH shadow register. When
629 * the CCSRBARL is written, the CCSRBARH shadow register contents
630 * along with the CCSRBARL value are loaded into the CCSRBARH and
631 * CCSRBARL registers, respectively. Follow this with a sync
635 lis r0, CONFIG_SYS_CCSRBAR_PHYS_HIGH@h
636 ori r0, r0, CONFIG_SYS_CCSRBAR_PHYS_HIGH@l
637 lis r1, CONFIG_SYS_CCSRBAR_PHYS_LOW@h
638 ori r1, r1, CONFIG_SYS_CCSRBAR_PHYS_LOW@l
640 ori r2, r2, CCSRAR_C@l
642 stw r0, 0(r9) /* Write to CCSRBARH */
643 sync /* Make sure we write to CCSRBARH first */
644 stw r1, 4(r9) /* Write to CCSRBARL */
648 * Write a 1 to the commit bit (C) of CCSRAR at the old location.
649 * Follow this with a sync instruction.
654 /* Delete the temporary LAW */
663 #else /* #ifdef CONFIG_FSL_CORENET */
667 * Read the current value of CCSRBAR using a load word instruction
668 * followed by an isync. This forces all accesses to configuration
675 /* CONFIG_SYS_CCSRBAR_PHYS right shifted by 12 */
676 #define CCSRBAR_PHYS_RS12 ((CONFIG_SYS_CCSRBAR_PHYS_HIGH << 20) | \
677 (CONFIG_SYS_CCSRBAR_PHYS_LOW >> 12))
679 /* Write the new value to CCSRBAR. */
680 lis r0, CCSRBAR_PHYS_RS12@h
681 ori r0, r0, CCSRBAR_PHYS_RS12@l
686 * The manual says to perform a load of an address that does not
687 * access configuration space or the on-chip SRAM using an existing TLB,
688 * but that doesn't appear to be necessary. We will do the isync,
694 * Read the contents of CCSRBAR from its new location, followed by
700 #endif /* #ifdef CONFIG_FSL_CORENET */
702 /* Delete the temporary TLBs */
704 delete_tlb0_entry 0, CONFIG_SYS_CCSRBAR, MAS2_I|MAS2_G, r3
705 delete_tlb0_entry 1, CONFIG_SYS_CCSRBAR + 0x1000, MAS2_I|MAS2_G, r3
707 #endif /* #if (CONFIG_SYS_CCSRBAR_DEFAULT != CONFIG_SYS_CCSRBAR_PHYS) */
709 #ifdef CONFIG_SYS_FSL_QORIQ_CHASSIS2
712 * Create a TLB for the MMR location of CCSR
713 * to access L2CSR0 register
715 create_tlb0_entry 0, \
716 0, BOOKE_PAGESZ_4K, \
717 CONFIG_SYS_CCSRBAR + 0xC20000, MAS2_I|MAS2_G, \
718 CONFIG_SYS_CCSRBAR_PHYS_LOW + 0xC20000, MAS3_SW|MAS3_SR, \
719 CONFIG_SYS_CCSRBAR_PHYS_HIGH, r3
721 enable_l2_cluster_l2:
722 /* enable L2 cache */
723 lis r3, (CONFIG_SYS_CCSRBAR + 0xC20000)@h
724 ori r3, r3, (CONFIG_SYS_CCSRBAR + 0xC20000)@l
725 li r4, 33 /* stash id */
727 lis r4, (L2CSR0_L2FI|L2CSR0_L2LFC)@h
728 ori r4, r4, (L2CSR0_L2FI|L2CSR0_L2LFC)@l
730 stw r4, 0(r3) /* invalidate L2 */
737 lis r4, (L2CSR0_L2E|L2CSR0_L2PE)@h
739 stw r4, 0(r3) /* enable L2 */
741 delete_tlb0_entry 0, CONFIG_SYS_CCSRBAR + 0xC20000, MAS2_I|MAS2_G, r3
745 * Enable the L1. On e6500, this has to be done
746 * after the L2 is up.
749 #ifdef CONFIG_SYS_CACHE_STASHING
750 /* set stash id to (coreID) * 2 + 32 + L1 CT (0) */
755 /* Enable/invalidate the I-Cache */
756 lis r2,(L1CSR1_ICFI|L1CSR1_ICLFR)@h
757 ori r2,r2,(L1CSR1_ICFI|L1CSR1_ICLFR)@l
764 lis r3,(L1CSR1_CPE|L1CSR1_ICE)@h
765 ori r3,r3,(L1CSR1_CPE|L1CSR1_ICE)@l
770 andi. r1,r3,L1CSR1_ICE@l
773 /* Enable/invalidate the D-Cache */
774 lis r2,(L1CSR0_DCFI|L1CSR0_DCLFR)@h
775 ori r2,r2,(L1CSR0_DCFI|L1CSR0_DCLFR)@l
782 lis r3,(L1CSR0_CPE|L1CSR0_DCE)@h
783 ori r3,r3,(L1CSR0_CPE|L1CSR0_DCE)@l
788 andi. r1,r3,L1CSR0_DCE@l
790 #ifdef CONFIG_SYS_FSL_ERRATUM_A004510
791 #define DCSR_LAWBARH0 (CONFIG_SYS_CCSRBAR + 0x1000)
792 #define LAW_SIZE_1M 0x13
793 #define DCSRBAR_LAWAR (LAW_EN | (0x1d << 20) | LAW_SIZE_1M)
799 * Create a TLB entry for CCSR
801 * We're executing out of TLB1 entry in r14, and that's the only
802 * TLB entry that exists. To allocate some TLB entries for our
803 * own use, flip a bit high enough that we won't flip it again
808 lis r0, MAS0_TLBSEL(1)@h
809 rlwimi r0, r8, 16, MAS0_ESEL_MSK
810 lis r1, FSL_BOOKE_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_16M)@h
811 ori r1, r1, FSL_BOOKE_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_16M)@l
812 lis r7, CONFIG_SYS_CCSRBAR@h
813 ori r7, r7, CONFIG_SYS_CCSRBAR@l
814 ori r2, r7, MAS2_I|MAS2_G
815 lis r3, FSL_BOOKE_MAS3(CONFIG_SYS_CCSRBAR_PHYS_LOW, 0, (MAS3_SW|MAS3_SR))@h
816 ori r3, r3, FSL_BOOKE_MAS3(CONFIG_SYS_CCSRBAR_PHYS_LOW, 0, (MAS3_SW|MAS3_SR))@l
817 lis r4, CONFIG_SYS_CCSRBAR_PHYS_HIGH@h
818 ori r4, r4, CONFIG_SYS_CCSRBAR_PHYS_HIGH@l
829 /* Map DCSR temporarily to physical address zero */
831 lis r3, DCSRBAR_LAWAR@h
832 ori r3, r3, DCSRBAR_LAWAR@l
834 stw r0, 0xc00(r7) /* LAWBARH0 */
835 stw r0, 0xc04(r7) /* LAWBARL0 */
837 stw r3, 0xc08(r7) /* LAWAR0 */
839 /* Read back from LAWAR to ensure the update is complete. */
840 lwz r3, 0xc08(r7) /* LAWAR0 */
843 /* Create a TLB entry for DCSR at zero */
846 lis r0, MAS0_TLBSEL(1)@h
847 rlwimi r0, r9, 16, MAS0_ESEL_MSK
848 lis r1, FSL_BOOKE_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_1M)@h
849 ori r1, r1, FSL_BOOKE_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_1M)@l
850 li r6, 0 /* DCSR effective address */
851 ori r2, r6, MAS2_I|MAS2_G
852 li r3, MAS3_SW|MAS3_SR
864 /* enable the timebase */
865 #define CTBENR 0xe2084
867 addis r4, r7, CTBENR@ha
873 .macro erratum_set_ccsr offset value
874 addis r3, r7, \offset@ha
876 addi r3, r3, \offset@l
881 .macro erratum_set_dcsr offset value
882 addis r3, r6, \offset@ha
884 addi r3, r3, \offset@l
889 erratum_set_dcsr 0xb0e08 0xe0201800
890 erratum_set_dcsr 0xb0e18 0xe0201800
891 erratum_set_dcsr 0xb0e38 0xe0400000
892 erratum_set_dcsr 0xb0008 0x00900000
893 erratum_set_dcsr 0xb0e40 0xe00a0000
894 erratum_set_ccsr 0x18600 CONFIG_SYS_FSL_CORENET_SNOOPVEC_COREONLY
895 erratum_set_ccsr 0x10f00 0x415e5000
896 erratum_set_ccsr 0x11f00 0x415e5000
898 /* Make temp mapping uncacheable again, if it was initially */
903 rlwimi r4, r15, 0, MAS2_I
904 rlwimi r4, r15, 0, MAS2_G
911 /* Clear the cache */
912 lis r3,(L1CSR1_ICFI|L1CSR1_ICLFR)@h
913 ori r3,r3,(L1CSR1_ICFI|L1CSR1_ICLFR)@l
923 lis r3,(L1CSR1_CPE|L1CSR1_ICE)@h
924 ori r3,r3,(L1CSR1_CPE|L1CSR1_ICE)@l
934 /* Remove temporary mappings */
935 lis r0, MAS0_TLBSEL(1)@h
936 rlwimi r0, r9, 16, MAS0_ESEL_MSK
946 stw r3, 0xc08(r7) /* LAWAR0 */
950 lis r0, MAS0_TLBSEL(1)@h
951 rlwimi r0, r8, 16, MAS0_ESEL_MSK
962 /* r3 = addr, r4 = value, clobbers r5, r11, r12 */
964 /* Lock two cache lines into I-Cache */
966 mfspr r11, SPRN_L1CSR1
967 rlwinm r11, r11, 0, ~L1CSR1_ICUL
970 mtspr SPRN_L1CSR1, r11
981 mfspr r11, SPRN_L1CSR1
982 3: andi. r11, r11, L1CSR1_ICUL
989 mfspr r11, SPRN_L1CSR1
990 3: andi. r11, r11, L1CSR1_ICUL
995 /* Inside a locked cacheline, wait a while, write, then wait a while */
999 addis r11, r5, 0x10000@h /* wait 65536 timebase ticks */
1000 4: mfspr r5, SPRN_TBRL
1007 addis r11, r5, 0x10000@h /* wait 65536 timebase ticks */
1008 4: mfspr r5, SPRN_TBRL
1015 * Fill out the rest of this cache line and the next with nops,
1016 * to ensure that nothing outside the locked area will be
1017 * fetched due to a branch.
1024 mfspr r11, SPRN_L1CSR1
1025 rlwinm r11, r11, 0, ~L1CSR1_ICUL
1028 mtspr SPRN_L1CSR1, r11
1037 create_init_ram_area:
1038 lis r6,FSL_BOOKE_MAS0(1, 15, 0)@h
1039 ori r6,r6,FSL_BOOKE_MAS0(1, 15, 0)@l
1042 /* create a temp mapping in AS=1 to the 4M boot window */
1043 create_tlb1_entry 15, \
1044 1, BOOKE_PAGESZ_4M, \
1045 CONFIG_SYS_MONITOR_BASE & 0xffc00000, MAS2_I|MAS2_G, \
1046 0xffc00000, MAS3_SX|MAS3_SW|MAS3_SR, \
1049 #elif !defined(CONFIG_SYS_RAMBOOT) && defined(CONFIG_SECURE_BOOT)
1050 /* create a temp mapping in AS = 1 for Flash mapping
1051 * created by PBL for ISBC code
1053 create_tlb1_entry 15, \
1054 1, BOOKE_PAGESZ_1M, \
1055 CONFIG_SYS_MONITOR_BASE & 0xfff00000, MAS2_I|MAS2_G, \
1056 CONFIG_SYS_PBI_FLASH_WINDOW & 0xfff00000, MAS3_SX|MAS3_SW|MAS3_SR, \
1060 * create a temp mapping in AS=1 to the 1M CONFIG_SYS_MONITOR_BASE space, the main
1061 * image has been relocated to CONFIG_SYS_MONITOR_BASE on the second stage.
1063 create_tlb1_entry 15, \
1064 1, BOOKE_PAGESZ_1M, \
1065 CONFIG_SYS_MONITOR_BASE & 0xfff00000, MAS2_I|MAS2_G, \
1066 CONFIG_SYS_MONITOR_BASE & 0xfff00000, MAS3_SX|MAS3_SW|MAS3_SR, \
1070 /* create a temp mapping in AS=1 to the stack */
1071 #if defined(CONFIG_SYS_INIT_RAM_ADDR_PHYS_LOW) && \
1072 defined(CONFIG_SYS_INIT_RAM_ADDR_PHYS_HIGH)
1073 create_tlb1_entry 14, \
1074 1, BOOKE_PAGESZ_16K, \
1075 CONFIG_SYS_INIT_RAM_ADDR, 0, \
1076 CONFIG_SYS_INIT_RAM_ADDR_PHYS_LOW, MAS3_SX|MAS3_SW|MAS3_SR, \
1077 CONFIG_SYS_INIT_RAM_ADDR_PHYS_HIGH, r6
1080 create_tlb1_entry 14, \
1081 1, BOOKE_PAGESZ_16K, \
1082 CONFIG_SYS_INIT_RAM_ADDR, 0, \
1083 CONFIG_SYS_INIT_RAM_ADDR, MAS3_SX|MAS3_SW|MAS3_SR, \
1087 lis r6,MSR_IS|MSR_DS|MSR_DE@h
1088 ori r6,r6,MSR_IS|MSR_DS|MSR_DE@l
1090 ori r7,r7,switch_as@l
1097 /* L1 DCache is used for initial RAM */
1099 /* Allocate Initial RAM in data cache.
1101 lis r3,CONFIG_SYS_INIT_RAM_ADDR@h
1102 ori r3,r3,CONFIG_SYS_INIT_RAM_ADDR@l
1105 /* cache size * 1024 / (2 * L1 line size) */
1106 slwi r2, r2, (10 - 1 - L1_CACHE_SHIFT)
1112 addi r3,r3,CONFIG_SYS_CACHELINE_SIZE
1115 /* Jump out the last 4K page and continue to 'normal' start */
1116 #if defined(CONFIG_SYS_RAMBOOT) || defined(CONFIG_SPL)
1117 /* We assume that we're already running at the address we're linked at */
1120 /* Calculate absolute address in FLASH and jump there */
1121 /*--------------------------------------------------------------*/
1122 lis r3,CONFIG_SYS_MONITOR_BASE@h
1123 ori r3,r3,CONFIG_SYS_MONITOR_BASE@l
1124 addi r3,r3,_start_cont - _start + _START_OFFSET
1132 .long 0x27051956 /* U-BOOT Magic Number */
1133 .globl version_string
1135 .ascii U_BOOT_VERSION_STRING, "\0"
1140 /* Setup the stack in initial RAM,could be L2-as-SRAM or L1 dcache*/
1141 lis r3,(CONFIG_SYS_INIT_RAM_ADDR)@h
1142 ori r3,r3,((CONFIG_SYS_INIT_SP_OFFSET-16)&~0xf)@l /* Align to 16 */
1144 stw r0,0(r3) /* Terminate Back Chain */
1145 stw r0,+4(r3) /* NULL return address. */
1146 mr r1,r3 /* Transfer to SP(r1) */
1151 /* switch back to AS = 0 */
1152 lis r3,(MSR_CE|MSR_ME|MSR_DE)@h
1153 ori r3,r3,(MSR_CE|MSR_ME|MSR_DE)@l
1161 /* NOTREACHED - board_init_f() does not return */
1164 . = EXC_OFF_SYS_RESET
1165 .globl _start_of_vectors
1168 /* Critical input. */
1169 CRIT_EXCEPTION(0x0100, CriticalInput, CritcalInputException)
1172 MCK_EXCEPTION(0x200, MachineCheck, MachineCheckException)
1174 /* Data Storage exception. */
1175 STD_EXCEPTION(0x0300, DataStorage, UnknownException)
1177 /* Instruction Storage exception. */
1178 STD_EXCEPTION(0x0400, InstStorage, UnknownException)
1180 /* External Interrupt exception. */
1181 STD_EXCEPTION(0x0500, ExtInterrupt, ExtIntException)
1183 /* Alignment exception. */
1186 EXCEPTION_PROLOG(SRR0, SRR1)
1191 addi r3,r1,STACK_FRAME_OVERHEAD
1192 EXC_XFER_TEMPLATE(Alignment, AlignmentException, MSR_KERNEL, COPY_EE)
1194 /* Program check exception */
1197 EXCEPTION_PROLOG(SRR0, SRR1)
1198 addi r3,r1,STACK_FRAME_OVERHEAD
1199 EXC_XFER_TEMPLATE(ProgramCheck, ProgramCheckException,
1200 MSR_KERNEL, COPY_EE)
1202 /* No FPU on MPC85xx. This exception is not supposed to happen.
1204 STD_EXCEPTION(0x0800, FPUnavailable, UnknownException)
1208 * r0 - SYSCALL number
1212 addis r11,r0,0 /* get functions table addr */
1213 ori r11,r11,0 /* Note: this code is patched in trap_init */
1214 addis r12,r0,0 /* get number of functions */
1220 rlwinm r0,r0,2,0,31 /* fn_addr = fn_tbl[r0] */
1224 li r20,0xd00-4 /* Get stack pointer */
1226 subi r12,r12,12 /* Adjust stack pointer */
1227 li r0,0xc00+_end_back-SystemCall
1228 cmplw 0,r0,r12 /* Check stack overflow */
1239 li r12,0xc00+_back-SystemCall
1247 mfmsr r11 /* Disable interrupts */
1251 SYNC /* Some chip revs need this... */
1255 li r12,0xd00-4 /* restore regs */
1265 addi r12,r12,12 /* Adjust stack pointer */
1273 STD_EXCEPTION(0x0a00, Decrementer, timer_interrupt)
1274 STD_EXCEPTION(0x0b00, IntervalTimer, UnknownException)
1275 STD_EXCEPTION(0x0c00, WatchdogTimer, UnknownException)
1277 STD_EXCEPTION(0x0d00, DataTLBError, UnknownException)
1278 STD_EXCEPTION(0x0e00, InstructionTLBError, UnknownException)
1280 CRIT_EXCEPTION(0x0f00, DebugBreakpoint, DebugException )
1282 .globl _end_of_vectors
1286 . = . + (0x100 - ( . & 0xff )) /* align for debug */
1289 * This code finishes saving the registers to the exception frame
1290 * and jumps to the appropriate handler for the exception.
1291 * Register r21 is pointer into trap frame, r1 has new stack pointer.
1293 .globl transfer_to_handler
1294 transfer_to_handler:
1305 andi. r24,r23,0x3f00 /* get vector offset */
1309 mtspr SPRG2,r22 /* r1 is now kernel sp */
1311 lwz r24,0(r23) /* virtual address of handler */
1312 lwz r23,4(r23) /* where to go when done */
1317 rfi /* jump to handler, enable MMU */
1320 mfmsr r28 /* Disable interrupts */
1324 SYNC /* Some chip revs need this... */
1339 lwz r2,_NIP(r1) /* Restore environment */
1350 mfmsr r28 /* Disable interrupts */
1354 SYNC /* Some chip revs need this... */
1369 lwz r2,_NIP(r1) /* Restore environment */
1380 mfmsr r28 /* Disable interrupts */
1384 SYNC /* Some chip revs need this... */
1399 lwz r2,_NIP(r1) /* Restore environment */
1401 mtspr SPRN_MCSRR0,r2
1402 mtspr SPRN_MCSRR1,r0
1413 .globl invalidate_icache
1416 ori r0,r0,L1CSR1_ICFI
1421 blr /* entire I cache */
1423 .globl invalidate_dcache
1426 ori r0,r0,L1CSR0_DCFI
1433 .globl icache_enable
1436 bl invalidate_icache
1446 .globl icache_disable
1450 ori r3,r3,L1CSR1_ICE
1456 .globl icache_status
1459 andi. r3,r3,L1CSR1_ICE
1462 .globl dcache_enable
1465 bl invalidate_dcache
1477 .globl dcache_disable
1481 ori r4,r4,L1CSR0_DCE
1487 .globl dcache_status
1490 andi. r3,r3,L1CSR0_DCE
1513 /*------------------------------------------------------------------------------- */
1515 /* Description: Input 8 bits */
1516 /*------------------------------------------------------------------------------- */
1522 /*------------------------------------------------------------------------------- */
1523 /* Function: out8 */
1524 /* Description: Output 8 bits */
1525 /*------------------------------------------------------------------------------- */
1532 /*------------------------------------------------------------------------------- */
1533 /* Function: out16 */
1534 /* Description: Output 16 bits */
1535 /*------------------------------------------------------------------------------- */
1542 /*------------------------------------------------------------------------------- */
1543 /* Function: out16r */
1544 /* Description: Byte reverse and output 16 bits */
1545 /*------------------------------------------------------------------------------- */
1552 /*------------------------------------------------------------------------------- */
1553 /* Function: out32 */
1554 /* Description: Output 32 bits */
1555 /*------------------------------------------------------------------------------- */
1562 /*------------------------------------------------------------------------------- */
1563 /* Function: out32r */
1564 /* Description: Byte reverse and output 32 bits */
1565 /*------------------------------------------------------------------------------- */
1572 /*------------------------------------------------------------------------------- */
1573 /* Function: in16 */
1574 /* Description: Input 16 bits */
1575 /*------------------------------------------------------------------------------- */
1581 /*------------------------------------------------------------------------------- */
1582 /* Function: in16r */
1583 /* Description: Input 16 bits and byte reverse */
1584 /*------------------------------------------------------------------------------- */
1590 /*------------------------------------------------------------------------------- */
1591 /* Function: in32 */
1592 /* Description: Input 32 bits */
1593 /*------------------------------------------------------------------------------- */
1599 /*------------------------------------------------------------------------------- */
1600 /* Function: in32r */
1601 /* Description: Input 32 bits and byte reverse */
1602 /*------------------------------------------------------------------------------- */
1607 #endif /* !MINIMAL_SPL */
1609 /*------------------------------------------------------------------------------*/
1612 * void write_tlb(mas0, mas1, mas2, mas3, mas7)
1620 #ifdef CONFIG_ENABLE_36BIT_PHYS
1624 #ifdef CONFIG_SYS_BOOK3E_HV
1634 * void relocate_code (addr_sp, gd, addr_moni)
1636 * This "function" does not return, instead it continues in RAM
1637 * after relocating the monitor code.
1641 * r5 = length in bytes
1642 * r6 = cachelinesize
1644 .globl relocate_code
1646 mr r1,r3 /* Set new stack pointer */
1647 mr r9,r4 /* Save copy of Init Data pointer */
1648 mr r10,r5 /* Save copy of Destination Address */
1651 mr r3,r5 /* Destination Address */
1652 lis r4,CONFIG_SYS_MONITOR_BASE@h /* Source Address */
1653 ori r4,r4,CONFIG_SYS_MONITOR_BASE@l
1654 lwz r5,GOT(__init_end)
1656 li r6,CONFIG_SYS_CACHELINE_SIZE /* Cache Line Size */
1661 * New GOT-PTR = (old GOT-PTR - CONFIG_SYS_MONITOR_BASE) + Destination Address
1667 /* First our own GOT */
1669 /* the the one used by the C code */
1679 beq cr1,4f /* In place copy is not necessary */
1680 beq 7f /* Protect against 0 count */
1699 * Now flush the cache: note that we must start from a cache aligned
1700 * address. Otherwise we might miss one cache line.
1704 beq 7f /* Always flush prefetch queue in any case */
1712 sync /* Wait for all dcbst to complete on bus */
1718 7: sync /* Wait for all icbi to complete on bus */
1722 * We are done. Do not return, instead branch to second part of board
1723 * initialization, now running from RAM.
1726 addi r0,r10,in_ram - _start + _START_OFFSET
1729 * As IVPR is going to point RAM address,
1730 * Make sure IVOR15 has valid opcode to support debugger
1735 * Re-point the IVPR at RAM
1740 blr /* NEVER RETURNS! */
1745 * Relocation Function, r12 point to got2+0x8000
1747 * Adjust got2 pointers, no need to check for 0, this code
1748 * already puts a few entries in the table.
1750 li r0,__got2_entries@sectoff@l
1751 la r3,GOT(_GOT2_TABLE_)
1752 lwz r11,GOT(_GOT2_TABLE_)
1764 * Now adjust the fixups and the pointers to the fixups
1765 * in case we need to move ourselves again.
1767 li r0,__fixup_entries@sectoff@l
1768 lwz r3,GOT(_FIXUP_TABLE_)
1784 * Now clear BSS segment
1786 lwz r3,GOT(__bss_start)
1787 lwz r4,GOT(__bss_end)
1800 mr r3,r9 /* Init Data pointer */
1801 mr r4,r10 /* Destination Address */
1806 * Copy exception vector code to low memory
1809 * r7: source address, r8: end address, r9: target address
1813 mflr r4 /* save link register */
1815 lwz r7,GOT(_start_of_vectors)
1816 lwz r8,GOT(_end_of_vectors)
1818 li r9,0x100 /* reset vector always at 0x100 */
1821 bgelr /* return if r7>=r8 - just in case */
1831 * relocate `hdlr' and `int_return' entries
1833 li r7,.L_CriticalInput - _start + _START_OFFSET
1835 li r7,.L_MachineCheck - _start + _START_OFFSET
1837 li r7,.L_DataStorage - _start + _START_OFFSET
1839 li r7,.L_InstStorage - _start + _START_OFFSET
1841 li r7,.L_ExtInterrupt - _start + _START_OFFSET
1843 li r7,.L_Alignment - _start + _START_OFFSET
1845 li r7,.L_ProgramCheck - _start + _START_OFFSET
1847 li r7,.L_FPUnavailable - _start + _START_OFFSET
1849 li r7,.L_Decrementer - _start + _START_OFFSET
1851 li r7,.L_IntervalTimer - _start + _START_OFFSET
1852 li r8,_end_of_vectors - _start + _START_OFFSET
1855 addi r7,r7,0x100 /* next exception vector */
1859 /* Update IVORs as per relocated vector table address */
1861 mtspr IVOR0,r7 /* 0: Critical input */
1863 mtspr IVOR1,r7 /* 1: Machine check */
1865 mtspr IVOR2,r7 /* 2: Data storage */
1867 mtspr IVOR3,r7 /* 3: Instruction storage */
1869 mtspr IVOR4,r7 /* 4: External interrupt */
1871 mtspr IVOR5,r7 /* 5: Alignment */
1873 mtspr IVOR6,r7 /* 6: Program check */
1875 mtspr IVOR7,r7 /* 7: floating point unavailable */
1877 mtspr IVOR8,r7 /* 8: System call */
1878 /* 9: Auxiliary processor unavailable(unsupported) */
1880 mtspr IVOR10,r7 /* 10: Decrementer */
1882 mtspr IVOR11,r7 /* 11: Interval timer */
1884 mtspr IVOR12,r7 /* 12: Watchdog timer */
1886 mtspr IVOR13,r7 /* 13: Data TLB error */
1888 mtspr IVOR14,r7 /* 14: Instruction TLB error */
1890 mtspr IVOR15,r7 /* 15: Debug */
1895 mtlr r4 /* restore link register */
1898 .globl unlock_ram_in_cache
1899 unlock_ram_in_cache:
1900 /* invalidate the INIT_RAM section */
1901 lis r3,(CONFIG_SYS_INIT_RAM_ADDR & ~(CONFIG_SYS_CACHELINE_SIZE-1))@h
1902 ori r3,r3,(CONFIG_SYS_INIT_RAM_ADDR & ~(CONFIG_SYS_CACHELINE_SIZE-1))@l
1905 slwi r4,r4,(10 - 1 - L1_CACHE_SHIFT)
1908 addi r3,r3,CONFIG_SYS_CACHELINE_SIZE
1912 /* Invalidate the TLB entries for the cache */
1913 lis r3,CONFIG_SYS_INIT_RAM_ADDR@h
1914 ori r3,r3,CONFIG_SYS_INIT_RAM_ADDR@l
1927 mfspr r3,SPRN_L1CFG0
1929 rlwinm r5,r3,9,3 /* Extract cache block size */
1930 twlgti r5,1 /* Only 32 and 64 byte cache blocks
1931 * are currently defined.
1934 subfic r6,r5,2 /* r6 = log2(1KiB / cache block size) -
1935 * log2(number of ways)
1937 slw r5,r4,r5 /* r5 = cache block size */
1939 rlwinm r7,r3,0,0xff /* Extract number of KiB in the cache */
1940 mulli r7,r7,13 /* An 8-way cache will require 13
1945 /* save off HID0 and set DCFA */
1947 ori r9,r8,HID0_DCFA@l
1954 1: lwz r3,0(r4) /* Load... */
1962 1: dcbf 0,r4 /* ...and flush. */
1975 #include "fixed_ivor.S"
1977 #endif /* !MINIMAL_SPL */