2 * Copyright 2004, 2007-2012 Freescale Semiconductor, Inc.
3 * Copyright (C) 2003 Motorola,Inc.
5 * SPDX-License-Identifier: GPL-2.0+
8 /* U-Boot Startup Code for Motorola 85xx PowerPC based Embedded Boards
10 * The processor starts at 0xfffffffc and the code is first executed in the
11 * last 4K page(0xfffff000-0xffffffff) in flash/rom.
15 #include <asm-offsets.h>
20 #include <ppc_asm.tmpl>
23 #include <asm/cache.h>
27 #define MSR_KERNEL ( MSR_ME ) /* Machine Check */
29 #if defined(CONFIG_NAND_SPL) || \
30 (defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_INIT_MINIMAL))
34 #if !defined(CONFIG_SPL) && !defined(CONFIG_SYS_RAMBOOT) && \
35 !defined(CONFIG_SECURE_BOOT) && !defined(CONFIG_SRIO_PCIE_BOOT_SLAVE)
40 * Set up GOT: Global Offset Table
42 * Use r12 to access the GOT
45 GOT_ENTRY(_GOT2_TABLE_)
46 GOT_ENTRY(_FIXUP_TABLE_)
50 GOT_ENTRY(_start_of_vectors)
51 GOT_ENTRY(_end_of_vectors)
52 GOT_ENTRY(transfer_to_handler)
57 GOT_ENTRY(__bss_start)
61 * e500 Startup -- after reset only the last 4KB of the effective
62 * address space is mapped in the MMU L2 TLB1 Entry0. The .bootpg
63 * section is located at THIS LAST page and basically does three
64 * things: clear some registers, set up exception tables and
65 * add more TLB entries for 'larger spaces'(e.g. the boot rom) to
66 * continue the boot procedure.
68 * Once the boot rom is mapped by TLB entries we can proceed
69 * with normal startup.
77 /* Enable debug exception */
82 * If we got an ePAPR device tree pointer passed in as r3, we need that
83 * later in cpu_init_early_f(). Save it to a safe register before we
84 * clobber it so that we can fetch it from there later.
88 #ifdef CONFIG_SYS_FSL_ERRATUM_A004510
91 li r4,CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV
95 #ifdef CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV2
96 li r4,CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV2
101 /* Not a supported revision affected by erratum */
105 1: li r27,1 /* Remember for later that we have the erratum */
106 /* Erratum says set bits 55:60 to 001001 */
116 #ifdef CONFIG_SYS_FSL_ERRATUM_A005125
119 mfspr r3, SPRN_HDBCR0
121 mtspr SPRN_HDBCR0, r3
125 #if defined(CONFIG_SECURE_BOOT) && defined(CONFIG_E500MC)
126 /* ISBC uses L2 as stack.
127 * Disable L2 cache here so that u-boot can enable it later
128 * as part of it's normal flow
131 /* Check if L2 is enabled */
132 mfspr r3, SPRN_L2CSR0
134 ori r2, r2, L2CSR0_L2E@l
138 mfspr r3, SPRN_L2CSR0
140 lis r2,(L2CSR0_L2FL)@h
141 ori r2, r2, (L2CSR0_L2FL)@l
148 mfspr r3, SPRN_L2CSR0
152 mfspr r3, SPRN_L2CSR0
154 ori r2, r2, L2CSR0_L2E@l
164 /* clear registers/arrays not reset by hardware */
168 mtspr L1CSR0,r0 /* invalidate d-cache */
169 mtspr L1CSR1,r0 /* invalidate i-cache */
172 mtspr DBSR,r1 /* Clear all valid bits */
175 .macro create_tlb1_entry esel ts tsize epn wimg rpn perm phy_high scratch
176 lis \scratch, FSL_BOOKE_MAS0(1, \esel, 0)@h
177 ori \scratch, \scratch, FSL_BOOKE_MAS0(1, \esel, 0)@l
179 lis \scratch, FSL_BOOKE_MAS1(1, 1, 0, \ts, \tsize)@h
180 ori \scratch, \scratch, FSL_BOOKE_MAS1(1, 1, 0, \ts, \tsize)@l
182 lis \scratch, FSL_BOOKE_MAS2(\epn, \wimg)@h
183 ori \scratch, \scratch, FSL_BOOKE_MAS2(\epn, \wimg)@l
185 lis \scratch, FSL_BOOKE_MAS3(\rpn, 0, \perm)@h
186 ori \scratch, \scratch, FSL_BOOKE_MAS3(\rpn, 0, \perm)@l
188 lis \scratch, \phy_high@h
189 ori \scratch, \scratch, \phy_high@l
197 .macro create_tlb0_entry esel ts tsize epn wimg rpn perm phy_high scratch
198 lis \scratch, FSL_BOOKE_MAS0(0, \esel, 0)@h
199 ori \scratch, \scratch, FSL_BOOKE_MAS0(0, \esel, 0)@l
201 lis \scratch, FSL_BOOKE_MAS1(1, 0, 0, \ts, \tsize)@h
202 ori \scratch, \scratch, FSL_BOOKE_MAS1(1, 0, 0, \ts, \tsize)@l
204 lis \scratch, FSL_BOOKE_MAS2(\epn, \wimg)@h
205 ori \scratch, \scratch, FSL_BOOKE_MAS2(\epn, \wimg)@l
207 lis \scratch, FSL_BOOKE_MAS3(\rpn, 0, \perm)@h
208 ori \scratch, \scratch, FSL_BOOKE_MAS3(\rpn, 0, \perm)@l
210 lis \scratch, \phy_high@h
211 ori \scratch, \scratch, \phy_high@l
219 .macro delete_tlb1_entry esel scratch
220 lis \scratch, FSL_BOOKE_MAS0(1, \esel, 0)@h
221 ori \scratch, \scratch, FSL_BOOKE_MAS0(1, \esel, 0)@l
231 .macro delete_tlb0_entry esel epn wimg scratch
232 lis \scratch, FSL_BOOKE_MAS0(0, \esel, 0)@h
233 ori \scratch, \scratch, FSL_BOOKE_MAS0(0, \esel, 0)@l
237 lis \scratch, FSL_BOOKE_MAS2(\epn, \wimg)@h
238 ori \scratch, \scratch, FSL_BOOKE_MAS2(\epn, \wimg)@l
246 /* Interrupt vectors do not fit in minimal SPL. */
247 #if !defined(MINIMAL_SPL)
248 /* Setup interrupt vectors */
249 lis r1,CONFIG_SYS_MONITOR_BASE@h
252 lis r3,(CONFIG_SYS_MONITOR_BASE & 0xffff)@h
253 ori r3,r3,(CONFIG_SYS_MONITOR_BASE & 0xffff)@l
255 addi r4,r3,CriticalInput - _start + _START_OFFSET
256 mtspr IVOR0,r4 /* 0: Critical input */
257 addi r4,r3,MachineCheck - _start + _START_OFFSET
258 mtspr IVOR1,r4 /* 1: Machine check */
259 addi r4,r3,DataStorage - _start + _START_OFFSET
260 mtspr IVOR2,r4 /* 2: Data storage */
261 addi r4,r3,InstStorage - _start + _START_OFFSET
262 mtspr IVOR3,r4 /* 3: Instruction storage */
263 addi r4,r3,ExtInterrupt - _start + _START_OFFSET
264 mtspr IVOR4,r4 /* 4: External interrupt */
265 addi r4,r3,Alignment - _start + _START_OFFSET
266 mtspr IVOR5,r4 /* 5: Alignment */
267 addi r4,r3,ProgramCheck - _start + _START_OFFSET
268 mtspr IVOR6,r4 /* 6: Program check */
269 addi r4,r3,FPUnavailable - _start + _START_OFFSET
270 mtspr IVOR7,r4 /* 7: floating point unavailable */
271 addi r4,r3,SystemCall - _start + _START_OFFSET
272 mtspr IVOR8,r4 /* 8: System call */
273 /* 9: Auxiliary processor unavailable(unsupported) */
274 addi r4,r3,Decrementer - _start + _START_OFFSET
275 mtspr IVOR10,r4 /* 10: Decrementer */
276 addi r4,r3,IntervalTimer - _start + _START_OFFSET
277 mtspr IVOR11,r4 /* 11: Interval timer */
278 addi r4,r3,WatchdogTimer - _start + _START_OFFSET
279 mtspr IVOR12,r4 /* 12: Watchdog timer */
280 addi r4,r3,DataTLBError - _start + _START_OFFSET
281 mtspr IVOR13,r4 /* 13: Data TLB error */
282 addi r4,r3,InstructionTLBError - _start + _START_OFFSET
283 mtspr IVOR14,r4 /* 14: Instruction TLB error */
284 addi r4,r3,DebugBreakpoint - _start + _START_OFFSET
285 mtspr IVOR15,r4 /* 15: Debug */
288 /* Clear and set up some registers. */
291 mtspr DEC,r0 /* prevent dec exceptions */
292 mttbl r0 /* prevent fit & wdt exceptions */
294 mtspr TSR,r1 /* clear all timer exception status */
295 mtspr TCR,r0 /* disable all */
296 mtspr ESR,r0 /* clear exception syndrome register */
297 mtspr MCSR,r0 /* machine check syndrome register */
298 mtxer r0 /* clear integer exception register */
300 #ifdef CONFIG_SYS_BOOK3E_HV
301 mtspr MAS8,r0 /* make sure MAS8 is clear */
304 /* Enable Time Base and Select Time Base Clock */
305 lis r0,HID0_EMCP@h /* Enable machine check */
306 #if defined(CONFIG_ENABLE_36BIT_PHYS)
307 ori r0,r0,HID0_ENMAS7@l /* Enable MAS7 */
309 #ifndef CONFIG_E500MC
310 ori r0,r0,HID0_TBEN@l /* Enable Timebase */
314 #ifndef CONFIG_E500MC
315 li r0,(HID1_ASTME|HID1_ABE)@l /* Addr streaming & broadcast */
318 cmpwi r3,0x50@l /* if we are rev 5.0 or greater set MBDD */
320 /* Set MBDD bit also */
321 ori r0, r0, HID1_MBDD@l
326 #ifdef CONFIG_SYS_FSL_ERRATUM_CPU_A003999
332 /* Enable Branch Prediction */
333 #if defined(CONFIG_BTB)
334 lis r0,BUCSR_ENABLE@h
335 ori r0,r0,BUCSR_ENABLE@l
339 #if defined(CONFIG_SYS_INIT_DBCR)
342 mtspr DBSR,r1 /* Clear all status bits */
343 lis r0,CONFIG_SYS_INIT_DBCR@h /* DBCR0[IDM] must be set */
344 ori r0,r0,CONFIG_SYS_INIT_DBCR@l
348 #ifdef CONFIG_MPC8569
349 #define CONFIG_SYS_LBC_ADDR (CONFIG_SYS_CCSRBAR_DEFAULT + 0x5000)
350 #define CONFIG_SYS_LBCR_ADDR (CONFIG_SYS_LBC_ADDR + 0xd0)
352 /* MPC8569 Rev.0 silcon needs to set bit 13 of LBCR to allow elBC to
353 * use address space which is more than 12bits, and it must be done in
354 * the 4K boot page. So we set this bit here.
357 /* create a temp mapping TLB0[0] for LBCR */
358 create_tlb0_entry 0, \
359 0, BOOKE_PAGESZ_4K, \
360 CONFIG_SYS_LBC_ADDR, MAS2_I|MAS2_G, \
361 CONFIG_SYS_LBC_ADDR, MAS3_SW|MAS3_SR, \
364 /* Set LBCR register */
365 lis r4,CONFIG_SYS_LBCR_ADDR@h
366 ori r4,r4,CONFIG_SYS_LBCR_ADDR@l
368 lis r5,CONFIG_SYS_LBC_LBCR@h
369 ori r5,r5,CONFIG_SYS_LBC_LBCR@l
373 /* invalidate this temp TLB */
374 lis r4,CONFIG_SYS_LBC_ADDR@h
375 ori r4,r4,CONFIG_SYS_LBC_ADDR@l
379 #endif /* CONFIG_MPC8569 */
382 * Search for the TLB that covers the code we're executing, and shrink it
383 * so that it covers only this 4K page. That will ensure that any other
384 * TLB we create won't interfere with it. We assume that the TLB exists,
385 * which is why we don't check the Valid bit of MAS1. We also assume
388 * This is necessary, for example, when booting from the on-chip ROM,
389 * which (oddly) creates a single 4GB TLB that covers CCSR and DDR.
391 bl nexti /* Find our address */
392 nexti: mflr r1 /* R1 = our PC */
394 mtspr MAS6, r2 /* Assume the current PID and AS are 0 */
397 tlbsx 0, r1 /* This must succeed */
399 mfspr r14, MAS0 /* Save ESEL for later */
400 rlwinm r14, r14, 16, 0xfff
402 /* Set the size of the TLB to 4KB */
405 andc r3, r3, r2 /* Clear the TSIZE bits */
406 ori r3, r3, MAS1_TSIZE(BOOKE_PAGESZ_4K)@l
407 oris r3, r3, MAS1_IPROT@h
411 * Set the base address of the TLB to our PC. We assume that
412 * virtual == physical. We also assume that MAS2_EPN == MAS3_RPN.
415 ori r3, r3, MAS2_EPN@l /* R3 = MAS2_EPN */
417 and r1, r1, r3 /* Our PC, rounded down to the nearest page */
422 #ifdef CONFIG_SYS_FSL_ERRATUM_A004510
425 andi. r15, r2, MAS2_I|MAS2_G /* save the old I/G for later */
426 rlwinm r2, r2, 0, ~MAS2_I
430 mtspr MAS2, r2 /* Set the EPN to our PC base address */
435 mtspr MAS3, r2 /* Set the RPN to our PC base address */
442 * Clear out any other TLB entries that may exist, to avoid conflicts.
443 * Our TLB entry is in r14.
445 li r0, TLBIVAX_ALL | TLBIVAX_TLB0
449 mfspr r4, SPRN_TLB1CFG
450 rlwinm r4, r4, 0, TLBnCFG_NENTRY_MASK
455 rlwinm r5, r3, 16, MAS0_ESEL_MSK
457 beq 2f /* skip the entry we're executing from */
459 oris r5, r5, MAS0_TLBSEL(1)@h
470 #if defined(CONFIG_SYS_PPC_E500_DEBUG_TLB) && !defined(MINIMAL_SPL)
472 * TLB entry for debuggging in AS1
473 * Create temporary TLB entry in AS0 to handle debug exception
474 * As on debug exception MSR is cleared i.e. Address space is changed
475 * to 0. A TLB entry (in AS0) is required to handle debug exception generated
481 * TLB entry is created for IVPR + IVOR15 to map on valid OP code address
482 * bacause flash's virtual address maps to 0xff800000 - 0xffffffff.
483 * and this window is outside of 4K boot window.
485 create_tlb1_entry CONFIG_SYS_PPC_E500_DEBUG_TLB, \
486 0, BOOKE_PAGESZ_4M, \
487 CONFIG_SYS_MONITOR_BASE & 0xffc00000, MAS2_I|MAS2_G, \
488 0xffc00000, MAS3_SX|MAS3_SW|MAS3_SR, \
491 #elif !defined(CONFIG_SYS_RAMBOOT) && defined(CONFIG_SECURE_BOOT)
492 create_tlb1_entry CONFIG_SYS_PPC_E500_DEBUG_TLB, \
493 0, BOOKE_PAGESZ_1M, \
494 CONFIG_SYS_MONITOR_BASE, MAS2_I|MAS2_G, \
495 CONFIG_SYS_PBI_FLASH_WINDOW, MAS3_SX|MAS3_SW|MAS3_SR, \
499 * TLB entry is created for IVPR + IVOR15 to map on valid OP code address
500 * because "nexti" will resize TLB to 4K
502 create_tlb1_entry CONFIG_SYS_PPC_E500_DEBUG_TLB, \
503 0, BOOKE_PAGESZ_256K, \
504 CONFIG_SYS_MONITOR_BASE & 0xfffc0000, MAS2_I, \
505 CONFIG_SYS_MONITOR_BASE & 0xfffc0000, MAS3_SX|MAS3_SW|MAS3_SR, \
511 * Relocate CCSR, if necessary. We relocate CCSR if (obviously) the default
512 * location is not where we want it. This typically happens on a 36-bit
513 * system, where we want to move CCSR to near the top of 36-bit address space.
515 * To move CCSR, we create two temporary TLBs, one for the old location, and
516 * another for the new location. On CoreNet systems, we also need to create
517 * a special, temporary LAW.
519 * As a general rule, TLB0 is used for short-term TLBs, and TLB1 is used for
520 * long-term TLBs, so we use TLB0 here.
522 #if (CONFIG_SYS_CCSRBAR_DEFAULT != CONFIG_SYS_CCSRBAR_PHYS)
524 #if !defined(CONFIG_SYS_CCSRBAR_PHYS_HIGH) || !defined(CONFIG_SYS_CCSRBAR_PHYS_LOW)
525 #error "CONFIG_SYS_CCSRBAR_PHYS_HIGH and CONFIG_SYS_CCSRBAR_PHYS_LOW) must be defined."
530 * Create a TLB for the new location of CCSR. Register R8 is reserved
531 * for the virtual address of this TLB (CONFIG_SYS_CCSRBAR).
533 lis r8, CONFIG_SYS_CCSRBAR@h
534 ori r8, r8, CONFIG_SYS_CCSRBAR@l
535 lis r9, (CONFIG_SYS_CCSRBAR + 0x1000)@h
536 ori r9, r9, (CONFIG_SYS_CCSRBAR + 0x1000)@l
537 create_tlb0_entry 0, \
538 0, BOOKE_PAGESZ_4K, \
539 CONFIG_SYS_CCSRBAR, MAS2_I|MAS2_G, \
540 CONFIG_SYS_CCSRBAR_PHYS_LOW, MAS3_SW|MAS3_SR, \
541 CONFIG_SYS_CCSRBAR_PHYS_HIGH, r3
543 * Create a TLB for the current location of CCSR. Register R9 is reserved
544 * for the virtual address of this TLB (CONFIG_SYS_CCSRBAR + 0x1000).
547 create_tlb0_entry 1, \
548 0, BOOKE_PAGESZ_4K, \
549 CONFIG_SYS_CCSRBAR + 0x1000, MAS2_I|MAS2_G, \
550 CONFIG_SYS_CCSRBAR_DEFAULT, MAS3_SW|MAS3_SR, \
551 0, r3 /* The default CCSR address is always a 32-bit number */
555 * We have a TLB for what we think is the current (old) CCSR. Let's
556 * verify that, otherwise we won't be able to move it.
557 * CONFIG_SYS_CCSRBAR_DEFAULT is always a 32-bit number, so we only
558 * need to compare the lower 32 bits of CCSRBAR on CoreNet systems.
561 lis r0, CONFIG_SYS_CCSRBAR_DEFAULT@h
562 ori r0, r0, CONFIG_SYS_CCSRBAR_DEFAULT@l
563 #ifdef CONFIG_FSL_CORENET
564 lwz r1, 4(r9) /* CCSRBARL */
566 lwz r1, 0(r9) /* CCSRBAR, shifted right by 12 */
573 * If the value we read from CCSRBARL is not what we expect, then
574 * enter an infinite loop. This will at least allow a debugger to
575 * halt execution and examine TLBs, etc. There's no point in going
579 bne infinite_debug_loop
581 #ifdef CONFIG_FSL_CORENET
583 #define CCSR_LAWBARH0 (CONFIG_SYS_CCSRBAR + 0x1000)
584 #define LAW_EN 0x80000000
585 #define LAW_SIZE_4K 0xb
586 #define CCSRBAR_LAWAR (LAW_EN | (0x1e << 20) | LAW_SIZE_4K)
587 #define CCSRAR_C 0x80000000 /* Commit */
591 * On CoreNet systems, we create the temporary LAW using a special LAW
592 * target ID of 0x1e. LAWBARH is at offset 0xc00 in CCSR.
594 lis r0, CONFIG_SYS_CCSRBAR_PHYS_HIGH@h
595 ori r0, r0, CONFIG_SYS_CCSRBAR_PHYS_HIGH@l
596 lis r1, CONFIG_SYS_CCSRBAR_PHYS_LOW@h
597 ori r1, r1, CONFIG_SYS_CCSRBAR_PHYS_LOW@l
598 lis r2, CCSRBAR_LAWAR@h
599 ori r2, r2, CCSRBAR_LAWAR@l
601 stw r0, 0xc00(r9) /* LAWBARH0 */
602 stw r1, 0xc04(r9) /* LAWBARL0 */
604 stw r2, 0xc08(r9) /* LAWAR0 */
607 * Read back from LAWAR to ensure the update is complete. e500mc
608 * cores also require an isync.
610 lwz r0, 0xc08(r9) /* LAWAR0 */
614 * Read the current CCSRBARH and CCSRBARL using load word instructions.
615 * Follow this with an isync instruction. This forces any outstanding
616 * accesses to configuration space to completion.
619 lwz r0, 0(r9) /* CCSRBARH */
620 lwz r0, 4(r9) /* CCSRBARL */
624 * Write the new values for CCSRBARH and CCSRBARL to their old
625 * locations. The CCSRBARH has a shadow register. When the CCSRBARH
626 * has a new value written it loads a CCSRBARH shadow register. When
627 * the CCSRBARL is written, the CCSRBARH shadow register contents
628 * along with the CCSRBARL value are loaded into the CCSRBARH and
629 * CCSRBARL registers, respectively. Follow this with a sync
633 lis r0, CONFIG_SYS_CCSRBAR_PHYS_HIGH@h
634 ori r0, r0, CONFIG_SYS_CCSRBAR_PHYS_HIGH@l
635 lis r1, CONFIG_SYS_CCSRBAR_PHYS_LOW@h
636 ori r1, r1, CONFIG_SYS_CCSRBAR_PHYS_LOW@l
638 ori r2, r2, CCSRAR_C@l
640 stw r0, 0(r9) /* Write to CCSRBARH */
641 sync /* Make sure we write to CCSRBARH first */
642 stw r1, 4(r9) /* Write to CCSRBARL */
646 * Write a 1 to the commit bit (C) of CCSRAR at the old location.
647 * Follow this with a sync instruction.
652 /* Delete the temporary LAW */
661 #else /* #ifdef CONFIG_FSL_CORENET */
665 * Read the current value of CCSRBAR using a load word instruction
666 * followed by an isync. This forces all accesses to configuration
673 /* CONFIG_SYS_CCSRBAR_PHYS right shifted by 12 */
674 #define CCSRBAR_PHYS_RS12 ((CONFIG_SYS_CCSRBAR_PHYS_HIGH << 20) | \
675 (CONFIG_SYS_CCSRBAR_PHYS_LOW >> 12))
677 /* Write the new value to CCSRBAR. */
678 lis r0, CCSRBAR_PHYS_RS12@h
679 ori r0, r0, CCSRBAR_PHYS_RS12@l
684 * The manual says to perform a load of an address that does not
685 * access configuration space or the on-chip SRAM using an existing TLB,
686 * but that doesn't appear to be necessary. We will do the isync,
692 * Read the contents of CCSRBAR from its new location, followed by
698 #endif /* #ifdef CONFIG_FSL_CORENET */
700 /* Delete the temporary TLBs */
702 delete_tlb0_entry 0, CONFIG_SYS_CCSRBAR, MAS2_I|MAS2_G, r3
703 delete_tlb0_entry 1, CONFIG_SYS_CCSRBAR + 0x1000, MAS2_I|MAS2_G, r3
705 #endif /* #if (CONFIG_SYS_CCSRBAR_DEFAULT != CONFIG_SYS_CCSRBAR_PHYS) */
707 #if defined(CONFIG_SYS_FSL_QORIQ_CHASSIS2) && defined(CONFIG_E6500)
710 * Create a TLB for the MMR location of CCSR
711 * to access L2CSR0 register
713 create_tlb0_entry 0, \
714 0, BOOKE_PAGESZ_4K, \
715 CONFIG_SYS_CCSRBAR + 0xC20000, MAS2_I|MAS2_G, \
716 CONFIG_SYS_CCSRBAR_PHYS_LOW + 0xC20000, MAS3_SW|MAS3_SR, \
717 CONFIG_SYS_CCSRBAR_PHYS_HIGH, r3
719 enable_l2_cluster_l2:
720 /* enable L2 cache */
721 lis r3, (CONFIG_SYS_CCSRBAR + 0xC20000)@h
722 ori r3, r3, (CONFIG_SYS_CCSRBAR + 0xC20000)@l
723 li r4, 33 /* stash id */
725 lis r4, (L2CSR0_L2FI|L2CSR0_L2LFC)@h
726 ori r4, r4, (L2CSR0_L2FI|L2CSR0_L2LFC)@l
728 stw r4, 0(r3) /* invalidate L2 */
735 lis r4, (L2CSR0_L2E|L2CSR0_L2PE)@h
736 ori r4, r4, (L2CSR0_L2REP_MODE)@l
738 stw r4, 0(r3) /* enable L2 */
740 delete_tlb0_entry 0, CONFIG_SYS_CCSRBAR + 0xC20000, MAS2_I|MAS2_G, r3
744 * Enable the L1. On e6500, this has to be done
745 * after the L2 is up.
748 #ifdef CONFIG_SYS_CACHE_STASHING
749 /* set stash id to (coreID) * 2 + 32 + L1 CT (0) */
754 /* Enable/invalidate the I-Cache */
755 lis r2,(L1CSR1_ICFI|L1CSR1_ICLFR)@h
756 ori r2,r2,(L1CSR1_ICFI|L1CSR1_ICLFR)@l
763 lis r3,(L1CSR1_CPE|L1CSR1_ICE)@h
764 ori r3,r3,(L1CSR1_CPE|L1CSR1_ICE)@l
769 andi. r1,r3,L1CSR1_ICE@l
772 /* Enable/invalidate the D-Cache */
773 lis r2,(L1CSR0_DCFI|L1CSR0_DCLFR)@h
774 ori r2,r2,(L1CSR0_DCFI|L1CSR0_DCLFR)@l
781 lis r3,(L1CSR0_CPE|L1CSR0_DCE)@h
782 ori r3,r3,(L1CSR0_CPE|L1CSR0_DCE)@l
787 andi. r1,r3,L1CSR0_DCE@l
789 #ifdef CONFIG_SYS_FSL_ERRATUM_A004510
790 #define DCSR_LAWBARH0 (CONFIG_SYS_CCSRBAR + 0x1000)
791 #define LAW_SIZE_1M 0x13
792 #define DCSRBAR_LAWAR (LAW_EN | (0x1d << 20) | LAW_SIZE_1M)
798 * Create a TLB entry for CCSR
800 * We're executing out of TLB1 entry in r14, and that's the only
801 * TLB entry that exists. To allocate some TLB entries for our
802 * own use, flip a bit high enough that we won't flip it again
807 lis r0, MAS0_TLBSEL(1)@h
808 rlwimi r0, r8, 16, MAS0_ESEL_MSK
809 lis r1, FSL_BOOKE_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_16M)@h
810 ori r1, r1, FSL_BOOKE_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_16M)@l
811 lis r7, CONFIG_SYS_CCSRBAR@h
812 ori r7, r7, CONFIG_SYS_CCSRBAR@l
813 ori r2, r7, MAS2_I|MAS2_G
814 lis r3, FSL_BOOKE_MAS3(CONFIG_SYS_CCSRBAR_PHYS_LOW, 0, (MAS3_SW|MAS3_SR))@h
815 ori r3, r3, FSL_BOOKE_MAS3(CONFIG_SYS_CCSRBAR_PHYS_LOW, 0, (MAS3_SW|MAS3_SR))@l
816 lis r4, CONFIG_SYS_CCSRBAR_PHYS_HIGH@h
817 ori r4, r4, CONFIG_SYS_CCSRBAR_PHYS_HIGH@l
828 /* Map DCSR temporarily to physical address zero */
830 lis r3, DCSRBAR_LAWAR@h
831 ori r3, r3, DCSRBAR_LAWAR@l
833 stw r0, 0xc00(r7) /* LAWBARH0 */
834 stw r0, 0xc04(r7) /* LAWBARL0 */
836 stw r3, 0xc08(r7) /* LAWAR0 */
838 /* Read back from LAWAR to ensure the update is complete. */
839 lwz r3, 0xc08(r7) /* LAWAR0 */
842 /* Create a TLB entry for DCSR at zero */
845 lis r0, MAS0_TLBSEL(1)@h
846 rlwimi r0, r9, 16, MAS0_ESEL_MSK
847 lis r1, FSL_BOOKE_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_1M)@h
848 ori r1, r1, FSL_BOOKE_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_1M)@l
849 li r6, 0 /* DCSR effective address */
850 ori r2, r6, MAS2_I|MAS2_G
851 li r3, MAS3_SW|MAS3_SR
863 /* enable the timebase */
864 #define CTBENR 0xe2084
866 addis r4, r7, CTBENR@ha
872 .macro erratum_set_ccsr offset value
873 addis r3, r7, \offset@ha
875 addi r3, r3, \offset@l
880 .macro erratum_set_dcsr offset value
881 addis r3, r6, \offset@ha
883 addi r3, r3, \offset@l
888 erratum_set_dcsr 0xb0e08 0xe0201800
889 erratum_set_dcsr 0xb0e18 0xe0201800
890 erratum_set_dcsr 0xb0e38 0xe0400000
891 erratum_set_dcsr 0xb0008 0x00900000
892 erratum_set_dcsr 0xb0e40 0xe00a0000
893 erratum_set_ccsr 0x18600 CONFIG_SYS_FSL_CORENET_SNOOPVEC_COREONLY
894 #ifdef CONFIG_RAMBOOT_PBL
895 erratum_set_ccsr 0x10f00 0x495e5000
897 erratum_set_ccsr 0x10f00 0x415e5000
899 erratum_set_ccsr 0x11f00 0x415e5000
901 /* Make temp mapping uncacheable again, if it was initially */
906 rlwimi r4, r15, 0, MAS2_I
907 rlwimi r4, r15, 0, MAS2_G
914 /* Clear the cache */
915 lis r3,(L1CSR1_ICFI|L1CSR1_ICLFR)@h
916 ori r3,r3,(L1CSR1_ICFI|L1CSR1_ICLFR)@l
926 lis r3,(L1CSR1_CPE|L1CSR1_ICE)@h
927 ori r3,r3,(L1CSR1_CPE|L1CSR1_ICE)@l
937 /* Remove temporary mappings */
938 lis r0, MAS0_TLBSEL(1)@h
939 rlwimi r0, r9, 16, MAS0_ESEL_MSK
949 stw r3, 0xc08(r7) /* LAWAR0 */
953 lis r0, MAS0_TLBSEL(1)@h
954 rlwimi r0, r8, 16, MAS0_ESEL_MSK
965 /* r3 = addr, r4 = value, clobbers r5, r11, r12 */
967 /* Lock two cache lines into I-Cache */
969 mfspr r11, SPRN_L1CSR1
970 rlwinm r11, r11, 0, ~L1CSR1_ICUL
973 mtspr SPRN_L1CSR1, r11
984 mfspr r11, SPRN_L1CSR1
985 3: andi. r11, r11, L1CSR1_ICUL
992 mfspr r11, SPRN_L1CSR1
993 3: andi. r11, r11, L1CSR1_ICUL
998 /* Inside a locked cacheline, wait a while, write, then wait a while */
1002 addis r11, r5, 0x10000@h /* wait 65536 timebase ticks */
1003 4: mfspr r5, SPRN_TBRL
1010 addis r11, r5, 0x10000@h /* wait 65536 timebase ticks */
1011 4: mfspr r5, SPRN_TBRL
1018 * Fill out the rest of this cache line and the next with nops,
1019 * to ensure that nothing outside the locked area will be
1020 * fetched due to a branch.
1027 mfspr r11, SPRN_L1CSR1
1028 rlwinm r11, r11, 0, ~L1CSR1_ICUL
1031 mtspr SPRN_L1CSR1, r11
1040 create_init_ram_area:
1041 lis r6,FSL_BOOKE_MAS0(1, 15, 0)@h
1042 ori r6,r6,FSL_BOOKE_MAS0(1, 15, 0)@l
1045 /* create a temp mapping in AS=1 to the 4M boot window */
1046 create_tlb1_entry 15, \
1047 1, BOOKE_PAGESZ_4M, \
1048 CONFIG_SYS_MONITOR_BASE & 0xffc00000, MAS2_I|MAS2_G, \
1049 0xffc00000, MAS3_SX|MAS3_SW|MAS3_SR, \
1052 #elif !defined(CONFIG_SYS_RAMBOOT) && defined(CONFIG_SECURE_BOOT)
1053 /* create a temp mapping in AS = 1 for Flash mapping
1054 * created by PBL for ISBC code
1056 create_tlb1_entry 15, \
1057 1, BOOKE_PAGESZ_1M, \
1058 CONFIG_SYS_MONITOR_BASE & 0xfff00000, MAS2_I|MAS2_G, \
1059 CONFIG_SYS_PBI_FLASH_WINDOW & 0xfff00000, MAS3_SX|MAS3_SW|MAS3_SR, \
1063 * create a temp mapping in AS=1 to the 1M CONFIG_SYS_MONITOR_BASE space, the main
1064 * image has been relocated to CONFIG_SYS_MONITOR_BASE on the second stage.
1066 create_tlb1_entry 15, \
1067 1, BOOKE_PAGESZ_1M, \
1068 CONFIG_SYS_MONITOR_BASE & 0xfff00000, MAS2_I|MAS2_G, \
1069 CONFIG_SYS_MONITOR_BASE & 0xfff00000, MAS3_SX|MAS3_SW|MAS3_SR, \
1073 /* create a temp mapping in AS=1 to the stack */
1074 #if defined(CONFIG_SYS_INIT_RAM_ADDR_PHYS_LOW) && \
1075 defined(CONFIG_SYS_INIT_RAM_ADDR_PHYS_HIGH)
1076 create_tlb1_entry 14, \
1077 1, BOOKE_PAGESZ_16K, \
1078 CONFIG_SYS_INIT_RAM_ADDR, 0, \
1079 CONFIG_SYS_INIT_RAM_ADDR_PHYS_LOW, MAS3_SX|MAS3_SW|MAS3_SR, \
1080 CONFIG_SYS_INIT_RAM_ADDR_PHYS_HIGH, r6
1083 create_tlb1_entry 14, \
1084 1, BOOKE_PAGESZ_16K, \
1085 CONFIG_SYS_INIT_RAM_ADDR, 0, \
1086 CONFIG_SYS_INIT_RAM_ADDR, MAS3_SX|MAS3_SW|MAS3_SR, \
1090 lis r6,MSR_IS|MSR_DS|MSR_DE@h
1091 ori r6,r6,MSR_IS|MSR_DS|MSR_DE@l
1093 ori r7,r7,switch_as@l
1100 /* L1 DCache is used for initial RAM */
1102 /* Allocate Initial RAM in data cache.
1104 lis r3,CONFIG_SYS_INIT_RAM_ADDR@h
1105 ori r3,r3,CONFIG_SYS_INIT_RAM_ADDR@l
1108 /* cache size * 1024 / (2 * L1 line size) */
1109 slwi r2, r2, (10 - 1 - L1_CACHE_SHIFT)
1115 addi r3,r3,CONFIG_SYS_CACHELINE_SIZE
1118 /* Jump out the last 4K page and continue to 'normal' start */
1119 #if defined(CONFIG_SYS_RAMBOOT) || defined(CONFIG_SPL)
1120 /* We assume that we're already running at the address we're linked at */
1123 /* Calculate absolute address in FLASH and jump there */
1124 /*--------------------------------------------------------------*/
1125 lis r3,CONFIG_SYS_MONITOR_BASE@h
1126 ori r3,r3,CONFIG_SYS_MONITOR_BASE@l
1127 addi r3,r3,_start_cont - _start + _START_OFFSET
1135 .long 0x27051956 /* U-BOOT Magic Number */
1136 .globl version_string
1138 .ascii U_BOOT_VERSION_STRING, "\0"
1143 /* Setup the stack in initial RAM,could be L2-as-SRAM or L1 dcache*/
1144 lis r3,(CONFIG_SYS_INIT_RAM_ADDR)@h
1145 ori r3,r3,((CONFIG_SYS_INIT_SP_OFFSET-16)&~0xf)@l /* Align to 16 */
1147 stw r0,0(r3) /* Terminate Back Chain */
1148 stw r0,+4(r3) /* NULL return address. */
1149 mr r1,r3 /* Transfer to SP(r1) */
1153 /* Pass our potential ePAPR device tree pointer to cpu_init_early_f */
1158 /* switch back to AS = 0 */
1159 lis r3,(MSR_CE|MSR_ME|MSR_DE)@h
1160 ori r3,r3,(MSR_CE|MSR_ME|MSR_DE)@l
1168 /* NOTREACHED - board_init_f() does not return */
1171 . = EXC_OFF_SYS_RESET
1172 .globl _start_of_vectors
1175 /* Critical input. */
1176 CRIT_EXCEPTION(0x0100, CriticalInput, CritcalInputException)
1179 MCK_EXCEPTION(0x200, MachineCheck, MachineCheckException)
1181 /* Data Storage exception. */
1182 STD_EXCEPTION(0x0300, DataStorage, UnknownException)
1184 /* Instruction Storage exception. */
1185 STD_EXCEPTION(0x0400, InstStorage, UnknownException)
1187 /* External Interrupt exception. */
1188 STD_EXCEPTION(0x0500, ExtInterrupt, ExtIntException)
1190 /* Alignment exception. */
1193 EXCEPTION_PROLOG(SRR0, SRR1)
1198 addi r3,r1,STACK_FRAME_OVERHEAD
1199 EXC_XFER_TEMPLATE(Alignment, AlignmentException, MSR_KERNEL, COPY_EE)
1201 /* Program check exception */
1204 EXCEPTION_PROLOG(SRR0, SRR1)
1205 addi r3,r1,STACK_FRAME_OVERHEAD
1206 EXC_XFER_TEMPLATE(ProgramCheck, ProgramCheckException,
1207 MSR_KERNEL, COPY_EE)
1209 /* No FPU on MPC85xx. This exception is not supposed to happen.
1211 STD_EXCEPTION(0x0800, FPUnavailable, UnknownException)
1215 * r0 - SYSCALL number
1219 addis r11,r0,0 /* get functions table addr */
1220 ori r11,r11,0 /* Note: this code is patched in trap_init */
1221 addis r12,r0,0 /* get number of functions */
1227 rlwinm r0,r0,2,0,31 /* fn_addr = fn_tbl[r0] */
1231 li r20,0xd00-4 /* Get stack pointer */
1233 subi r12,r12,12 /* Adjust stack pointer */
1234 li r0,0xc00+_end_back-SystemCall
1235 cmplw 0,r0,r12 /* Check stack overflow */
1246 li r12,0xc00+_back-SystemCall
1254 mfmsr r11 /* Disable interrupts */
1258 SYNC /* Some chip revs need this... */
1262 li r12,0xd00-4 /* restore regs */
1272 addi r12,r12,12 /* Adjust stack pointer */
1280 STD_EXCEPTION(0x0a00, Decrementer, timer_interrupt)
1281 STD_EXCEPTION(0x0b00, IntervalTimer, UnknownException)
1282 STD_EXCEPTION(0x0c00, WatchdogTimer, UnknownException)
1284 STD_EXCEPTION(0x0d00, DataTLBError, UnknownException)
1285 STD_EXCEPTION(0x0e00, InstructionTLBError, UnknownException)
1287 CRIT_EXCEPTION(0x0f00, DebugBreakpoint, DebugException )
1289 .globl _end_of_vectors
1293 . = . + (0x100 - ( . & 0xff )) /* align for debug */
1296 * This code finishes saving the registers to the exception frame
1297 * and jumps to the appropriate handler for the exception.
1298 * Register r21 is pointer into trap frame, r1 has new stack pointer.
1300 .globl transfer_to_handler
1301 transfer_to_handler:
1312 andi. r24,r23,0x3f00 /* get vector offset */
1316 mtspr SPRG2,r22 /* r1 is now kernel sp */
1318 lwz r24,0(r23) /* virtual address of handler */
1319 lwz r23,4(r23) /* where to go when done */
1324 rfi /* jump to handler, enable MMU */
1327 mfmsr r28 /* Disable interrupts */
1331 SYNC /* Some chip revs need this... */
1346 lwz r2,_NIP(r1) /* Restore environment */
1357 mfmsr r28 /* Disable interrupts */
1361 SYNC /* Some chip revs need this... */
1376 lwz r2,_NIP(r1) /* Restore environment */
1387 mfmsr r28 /* Disable interrupts */
1391 SYNC /* Some chip revs need this... */
1406 lwz r2,_NIP(r1) /* Restore environment */
1408 mtspr SPRN_MCSRR0,r2
1409 mtspr SPRN_MCSRR1,r0
1420 .globl invalidate_icache
1423 ori r0,r0,L1CSR1_ICFI
1428 blr /* entire I cache */
1430 .globl invalidate_dcache
1433 ori r0,r0,L1CSR0_DCFI
1440 .globl icache_enable
1443 bl invalidate_icache
1453 .globl icache_disable
1457 ori r3,r3,L1CSR1_ICE
1463 .globl icache_status
1466 andi. r3,r3,L1CSR1_ICE
1469 .globl dcache_enable
1472 bl invalidate_dcache
1484 .globl dcache_disable
1488 ori r4,r4,L1CSR0_DCE
1494 .globl dcache_status
1497 andi. r3,r3,L1CSR0_DCE
1520 /*------------------------------------------------------------------------------- */
1522 /* Description: Input 8 bits */
1523 /*------------------------------------------------------------------------------- */
1529 /*------------------------------------------------------------------------------- */
1530 /* Function: out8 */
1531 /* Description: Output 8 bits */
1532 /*------------------------------------------------------------------------------- */
1539 /*------------------------------------------------------------------------------- */
1540 /* Function: out16 */
1541 /* Description: Output 16 bits */
1542 /*------------------------------------------------------------------------------- */
1549 /*------------------------------------------------------------------------------- */
1550 /* Function: out16r */
1551 /* Description: Byte reverse and output 16 bits */
1552 /*------------------------------------------------------------------------------- */
1559 /*------------------------------------------------------------------------------- */
1560 /* Function: out32 */
1561 /* Description: Output 32 bits */
1562 /*------------------------------------------------------------------------------- */
1569 /*------------------------------------------------------------------------------- */
1570 /* Function: out32r */
1571 /* Description: Byte reverse and output 32 bits */
1572 /*------------------------------------------------------------------------------- */
1579 /*------------------------------------------------------------------------------- */
1580 /* Function: in16 */
1581 /* Description: Input 16 bits */
1582 /*------------------------------------------------------------------------------- */
1588 /*------------------------------------------------------------------------------- */
1589 /* Function: in16r */
1590 /* Description: Input 16 bits and byte reverse */
1591 /*------------------------------------------------------------------------------- */
1597 /*------------------------------------------------------------------------------- */
1598 /* Function: in32 */
1599 /* Description: Input 32 bits */
1600 /*------------------------------------------------------------------------------- */
1606 /*------------------------------------------------------------------------------- */
1607 /* Function: in32r */
1608 /* Description: Input 32 bits and byte reverse */
1609 /*------------------------------------------------------------------------------- */
1614 #endif /* !MINIMAL_SPL */
1616 /*------------------------------------------------------------------------------*/
1619 * void write_tlb(mas0, mas1, mas2, mas3, mas7)
1627 #ifdef CONFIG_ENABLE_36BIT_PHYS
1631 #ifdef CONFIG_SYS_BOOK3E_HV
1641 * void relocate_code (addr_sp, gd, addr_moni)
1643 * This "function" does not return, instead it continues in RAM
1644 * after relocating the monitor code.
1648 * r5 = length in bytes
1649 * r6 = cachelinesize
1651 .globl relocate_code
1653 mr r1,r3 /* Set new stack pointer */
1654 mr r9,r4 /* Save copy of Init Data pointer */
1655 mr r10,r5 /* Save copy of Destination Address */
1658 mr r3,r5 /* Destination Address */
1659 lis r4,CONFIG_SYS_MONITOR_BASE@h /* Source Address */
1660 ori r4,r4,CONFIG_SYS_MONITOR_BASE@l
1661 lwz r5,GOT(__init_end)
1663 li r6,CONFIG_SYS_CACHELINE_SIZE /* Cache Line Size */
1668 * New GOT-PTR = (old GOT-PTR - CONFIG_SYS_MONITOR_BASE) + Destination Address
1674 /* First our own GOT */
1676 /* the the one used by the C code */
1686 beq cr1,4f /* In place copy is not necessary */
1687 beq 7f /* Protect against 0 count */
1706 * Now flush the cache: note that we must start from a cache aligned
1707 * address. Otherwise we might miss one cache line.
1711 beq 7f /* Always flush prefetch queue in any case */
1719 sync /* Wait for all dcbst to complete on bus */
1725 7: sync /* Wait for all icbi to complete on bus */
1729 * We are done. Do not return, instead branch to second part of board
1730 * initialization, now running from RAM.
1733 addi r0,r10,in_ram - _start + _START_OFFSET
1736 * As IVPR is going to point RAM address,
1737 * Make sure IVOR15 has valid opcode to support debugger
1742 * Re-point the IVPR at RAM
1747 blr /* NEVER RETURNS! */
1752 * Relocation Function, r12 point to got2+0x8000
1754 * Adjust got2 pointers, no need to check for 0, this code
1755 * already puts a few entries in the table.
1757 li r0,__got2_entries@sectoff@l
1758 la r3,GOT(_GOT2_TABLE_)
1759 lwz r11,GOT(_GOT2_TABLE_)
1771 * Now adjust the fixups and the pointers to the fixups
1772 * in case we need to move ourselves again.
1774 li r0,__fixup_entries@sectoff@l
1775 lwz r3,GOT(_FIXUP_TABLE_)
1791 * Now clear BSS segment
1793 lwz r3,GOT(__bss_start)
1794 lwz r4,GOT(__bss_end)
1807 mr r3,r9 /* Init Data pointer */
1808 mr r4,r10 /* Destination Address */
1813 * Copy exception vector code to low memory
1816 * r7: source address, r8: end address, r9: target address
1820 mflr r4 /* save link register */
1822 lwz r7,GOT(_start_of_vectors)
1823 lwz r8,GOT(_end_of_vectors)
1825 li r9,0x100 /* reset vector always at 0x100 */
1828 bgelr /* return if r7>=r8 - just in case */
1838 * relocate `hdlr' and `int_return' entries
1840 li r7,.L_CriticalInput - _start + _START_OFFSET
1842 li r7,.L_MachineCheck - _start + _START_OFFSET
1844 li r7,.L_DataStorage - _start + _START_OFFSET
1846 li r7,.L_InstStorage - _start + _START_OFFSET
1848 li r7,.L_ExtInterrupt - _start + _START_OFFSET
1850 li r7,.L_Alignment - _start + _START_OFFSET
1852 li r7,.L_ProgramCheck - _start + _START_OFFSET
1854 li r7,.L_FPUnavailable - _start + _START_OFFSET
1856 li r7,.L_Decrementer - _start + _START_OFFSET
1858 li r7,.L_IntervalTimer - _start + _START_OFFSET
1859 li r8,_end_of_vectors - _start + _START_OFFSET
1862 addi r7,r7,0x100 /* next exception vector */
1866 /* Update IVORs as per relocated vector table address */
1868 mtspr IVOR0,r7 /* 0: Critical input */
1870 mtspr IVOR1,r7 /* 1: Machine check */
1872 mtspr IVOR2,r7 /* 2: Data storage */
1874 mtspr IVOR3,r7 /* 3: Instruction storage */
1876 mtspr IVOR4,r7 /* 4: External interrupt */
1878 mtspr IVOR5,r7 /* 5: Alignment */
1880 mtspr IVOR6,r7 /* 6: Program check */
1882 mtspr IVOR7,r7 /* 7: floating point unavailable */
1884 mtspr IVOR8,r7 /* 8: System call */
1885 /* 9: Auxiliary processor unavailable(unsupported) */
1887 mtspr IVOR10,r7 /* 10: Decrementer */
1889 mtspr IVOR11,r7 /* 11: Interval timer */
1891 mtspr IVOR12,r7 /* 12: Watchdog timer */
1893 mtspr IVOR13,r7 /* 13: Data TLB error */
1895 mtspr IVOR14,r7 /* 14: Instruction TLB error */
1897 mtspr IVOR15,r7 /* 15: Debug */
1902 mtlr r4 /* restore link register */
1905 .globl unlock_ram_in_cache
1906 unlock_ram_in_cache:
1907 /* invalidate the INIT_RAM section */
1908 lis r3,(CONFIG_SYS_INIT_RAM_ADDR & ~(CONFIG_SYS_CACHELINE_SIZE-1))@h
1909 ori r3,r3,(CONFIG_SYS_INIT_RAM_ADDR & ~(CONFIG_SYS_CACHELINE_SIZE-1))@l
1912 slwi r4,r4,(10 - 1 - L1_CACHE_SHIFT)
1916 addi r3,r3,CONFIG_SYS_CACHELINE_SIZE
1920 /* Invalidate the TLB entries for the cache */
1921 lis r3,CONFIG_SYS_INIT_RAM_ADDR@h
1922 ori r3,r3,CONFIG_SYS_INIT_RAM_ADDR@l
1935 mfspr r3,SPRN_L1CFG0
1937 rlwinm r5,r3,9,3 /* Extract cache block size */
1938 twlgti r5,1 /* Only 32 and 64 byte cache blocks
1939 * are currently defined.
1942 subfic r6,r5,2 /* r6 = log2(1KiB / cache block size) -
1943 * log2(number of ways)
1945 slw r5,r4,r5 /* r5 = cache block size */
1947 rlwinm r7,r3,0,0xff /* Extract number of KiB in the cache */
1948 mulli r7,r7,13 /* An 8-way cache will require 13
1953 /* save off HID0 and set DCFA */
1955 ori r9,r8,HID0_DCFA@l
1962 1: lwz r3,0(r4) /* Load... */
1970 1: dcbf 0,r4 /* ...and flush. */
1979 #endif /* !MINIMAL_SPL */