1 /* SPDX-License-Identifier: GPL-2.0+ */
3 * Copyright 2004, 2007-2012 Freescale Semiconductor, Inc.
4 * Copyright (C) 2003 Motorola,Inc.
7 /* U-Boot Startup Code for Motorola 85xx PowerPC based Embedded Boards
9 * The processor starts at 0xfffffffc and the code is first executed in the
10 * last 4K page(0xfffff000-0xffffffff) in flash/rom.
14 #include <asm-offsets.h>
17 #include <system-constants.h>
19 #include <ppc_asm.tmpl>
22 #include <asm/cache.h>
26 #define MSR_KERNEL ( MSR_ME ) /* Machine Check */
28 #define LAW_EN 0x80000000
30 #if defined(CONFIG_NAND_SPL) || \
31 (defined(CONFIG_SPL_BUILD) && CONFIG_IS_ENABLED(INIT_MINIMAL))
35 #if !defined(CONFIG_SPL) && !defined(CONFIG_SYS_RAMBOOT) && \
36 !defined(CONFIG_NXP_ESBC) && !defined(CONFIG_SRIO_PCIE_BOOT_SLAVE)
41 * Set up GOT: Global Offset Table
43 * Use r12 to access the GOT
46 GOT_ENTRY(_GOT2_TABLE_)
47 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)
60 #ifdef CONFIG_FSL_PREPBL_ESDHC_BOOT_SECTOR
61 #if !defined(CONFIG_SPL) || defined(CONFIG_SPL_BUILD)
63 /* Maximal size of the image */
64 #ifdef CONFIG_SPL_BUILD
65 #define MAX_IMAGE_SIZE (CONFIG_SPL_MAX_SIZE - (CONFIG_FSL_PREPBL_ESDHC_BOOT_SECTOR_DATA * 512))
67 #define MAX_IMAGE_SIZE CONFIG_SYS_L2_SIZE
70 #if defined(CONFIG_SPL_BUILD) && CONFIG_SPL_MAX_SIZE < CONFIG_FSL_PREPBL_ESDHC_BOOT_SECTOR_DATA * 512
71 #error "CONFIG_SPL_MAX_SIZE is too small for CONFIG_FSL_PREPBL_ESDHC_BOOT_SECTOR_DATA"
74 #if MAX_IMAGE_SIZE > CONFIG_SYS_L2_SIZE
75 #error "Image is too big"
78 #define DIV_ROUND_UP(a, b) (((a) + (b) - 1) / (b))
79 #define ALIGN(x, a) (DIV_ROUND_UP(x, a) * (a))
81 /* Definitions from C header file asm/immap_85xx.h */
83 #define CONFIG_SYS_MPC85xx_L2_OFFSET 0x20000
85 #define MPC85xx_L2CTL 0x000
86 #define MPC85xx_L2CTL_L2E 0x80000000
87 #define MPC85xx_L2CTL_L2SRAM_ENTIRE 0x00010000
89 #define MPC85xx_L2SRBAR0 0x100
91 #define MPC85xx_L2ERRDIS 0xe44
92 #define MPC85xx_L2ERRDIS_MBECC 0x00000008
93 #define MPC85xx_L2ERRDIS_SBECC 0x00000004
95 /* Definitions from C header file fsl_esdhc.h */
97 #define ESDHCCTL 0x0002e40c
98 #define ESDHCCTL_SNOOP 0x00000040
101 * QorIQ pre-PBL eSDHC boot sector:
102 * Instruct BootROM to configure L2 SRAM and eSDHC then load image
103 * from SD card into L2 SRAM and finally jump to image entry point.
105 .section .bootsect, "a"
109 .org 0x40 /* BOOT signature */
112 .org 0x48 /* Number of bytes to be copied, must be multiple of block size (512) */
113 .long ALIGN(MAX_IMAGE_SIZE, 512)
115 .org 0x50 /* Source address from the beginning of boot sector in byte address format, must be multiple of block size (512) */
116 .long (CONFIG_FSL_PREPBL_ESDHC_BOOT_SECTOR_START + CONFIG_FSL_PREPBL_ESDHC_BOOT_SECTOR_DATA) * 512
118 .org 0x58 /* Target address in the system's local memory address space */
119 .long CONFIG_SYS_MONITOR_BASE
121 .org 0x60 /* Execution starting address */
124 .org 0x68 /* Number of configuration data pairs */
125 .long DIV_ROUND_UP(.Lconf_pair_end - .Lconf_pair_start, 8)
127 .org 0x80 /* Start of configuration */
130 .long CONFIG_SYS_CCSRBAR_DEFAULT + CONFIG_SYS_MPC85xx_L2_OFFSET + MPC85xx_L2SRBAR0 /* Address: L2 memory-mapped SRAM base addr 0 */
131 .long CONFIG_SYS_INIT_L2_ADDR
133 .long CONFIG_SYS_CCSRBAR_DEFAULT + CONFIG_SYS_MPC85xx_L2_OFFSET + MPC85xx_L2ERRDIS /* Address: L2 cache error disable */
134 .long MPC85xx_L2ERRDIS_MBECC | MPC85xx_L2ERRDIS_SBECC
136 .long CONFIG_SYS_CCSRBAR_DEFAULT + CONFIG_SYS_MPC85xx_L2_OFFSET + MPC85xx_L2CTL /* Address: L2 configuration 0 */
137 .long MPC85xx_L2CTL_L2E | MPC85xx_L2CTL_L2SRAM_ENTIRE
139 .long CONFIG_SYS_CCSRBAR_DEFAULT + ESDHCCTL /* Address: eSDHC DMA control */
142 .long 0x40000001 /* Command: Delay in 8 CCB clocks */
145 .long 0x80000001 /* End of configuration */
148 .org 0x1b8 /* Reserved for MBR/DBR */
149 .org 0x200 /* End of boot sector */
155 * e500 Startup -- after reset only the last 4KB of the effective
156 * address space is mapped in the MMU L2 TLB1 Entry0. The .bootpg
157 * section is located at THIS LAST page and basically does three
158 * things: clear some registers, set up exception tables and
159 * add more TLB entries for 'larger spaces'(e.g. the boot rom) to
160 * continue the boot procedure.
162 * Once the boot rom is mapped by TLB entries we can proceed
163 * with normal startup.
167 .section .bootpg,"ax"
171 /* Enable debug exception */
176 * If we got an ePAPR device tree pointer passed in as r3, we need that
177 * later in cpu_init_early_f(). Save it to a safe register before we
178 * clobber it so that we can fetch it from there later.
182 #ifdef CONFIG_SYS_FSL_ERRATUM_A004510
185 li r4,CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV
189 #ifdef CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV2
190 li r4,CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV2
195 /* Not a supported revision affected by erratum */
199 1: li r27,1 /* Remember for later that we have the erratum */
200 /* Erratum says set bits 55:60 to 001001 */
210 #ifdef CONFIG_SYS_FSL_ERRATUM_A005125
213 mfspr r3, SPRN_HDBCR0
215 mtspr SPRN_HDBCR0, r3
219 #if defined(CONFIG_NXP_ESBC) && defined(CONFIG_E500MC) && \
220 !defined(CONFIG_E6500)
221 /* ISBC uses L2 as stack.
222 * Disable L2 cache here so that u-boot can enable it later
223 * as part of it's normal flow
226 /* Check if L2 is enabled */
227 mfspr r3, SPRN_L2CSR0
229 ori r2, r2, L2CSR0_L2E@l
233 mfspr r3, SPRN_L2CSR0
235 lis r2,(L2CSR0_L2FL)@h
236 ori r2, r2, (L2CSR0_L2FL)@l
243 mfspr r3, SPRN_L2CSR0
247 mfspr r3, SPRN_L2CSR0
249 ori r2, r2, L2CSR0_L2E@l
259 /* clear registers/arrays not reset by hardware */
263 mtspr L1CSR0,r0 /* invalidate d-cache */
264 mtspr L1CSR1,r0 /* invalidate i-cache */
267 mtspr DBSR,r1 /* Clear all valid bits */
270 .macro create_tlb1_entry esel ts tsize epn wimg rpn perm phy_high scratch
271 lis \scratch, FSL_BOOKE_MAS0(1, \esel, 0)@h
272 ori \scratch, \scratch, FSL_BOOKE_MAS0(1, \esel, 0)@l
274 lis \scratch, FSL_BOOKE_MAS1(1, 1, 0, \ts, \tsize)@h
275 ori \scratch, \scratch, FSL_BOOKE_MAS1(1, 1, 0, \ts, \tsize)@l
277 lis \scratch, FSL_BOOKE_MAS2(\epn, \wimg)@h
278 ori \scratch, \scratch, FSL_BOOKE_MAS2(\epn, \wimg)@l
280 lis \scratch, FSL_BOOKE_MAS3(\rpn, 0, \perm)@h
281 ori \scratch, \scratch, FSL_BOOKE_MAS3(\rpn, 0, \perm)@l
283 lis \scratch, \phy_high@h
284 ori \scratch, \scratch, \phy_high@l
292 .macro create_tlb0_entry esel ts tsize epn wimg rpn perm phy_high scratch
293 lis \scratch, FSL_BOOKE_MAS0(0, \esel, 0)@h
294 ori \scratch, \scratch, FSL_BOOKE_MAS0(0, \esel, 0)@l
296 lis \scratch, FSL_BOOKE_MAS1(1, 0, 0, \ts, \tsize)@h
297 ori \scratch, \scratch, FSL_BOOKE_MAS1(1, 0, 0, \ts, \tsize)@l
299 lis \scratch, FSL_BOOKE_MAS2(\epn, \wimg)@h
300 ori \scratch, \scratch, FSL_BOOKE_MAS2(\epn, \wimg)@l
302 lis \scratch, FSL_BOOKE_MAS3(\rpn, 0, \perm)@h
303 ori \scratch, \scratch, FSL_BOOKE_MAS3(\rpn, 0, \perm)@l
305 lis \scratch, \phy_high@h
306 ori \scratch, \scratch, \phy_high@l
314 .macro delete_tlb1_entry esel scratch
315 lis \scratch, FSL_BOOKE_MAS0(1, \esel, 0)@h
316 ori \scratch, \scratch, FSL_BOOKE_MAS0(1, \esel, 0)@l
326 .macro delete_tlb0_entry esel epn wimg scratch
327 lis \scratch, FSL_BOOKE_MAS0(0, \esel, 0)@h
328 ori \scratch, \scratch, FSL_BOOKE_MAS0(0, \esel, 0)@l
332 lis \scratch, FSL_BOOKE_MAS2(\epn, \wimg)@h
333 ori \scratch, \scratch, FSL_BOOKE_MAS2(\epn, \wimg)@l
341 /* Interrupt vectors do not fit in minimal SPL. */
342 #if !defined(MINIMAL_SPL)
343 /* Setup interrupt vectors */
344 lis r1,CONFIG_VAL(SYS_MONITOR_BASE)@h
347 li r4,CriticalInput@l
348 mtspr IVOR0,r4 /* 0: Critical input */
350 mtspr IVOR1,r4 /* 1: Machine check */
352 mtspr IVOR2,r4 /* 2: Data storage */
354 mtspr IVOR3,r4 /* 3: Instruction storage */
356 mtspr IVOR4,r4 /* 4: External interrupt */
358 mtspr IVOR5,r4 /* 5: Alignment */
360 mtspr IVOR6,r4 /* 6: Program check */
361 li r4,FPUnavailable@l
362 mtspr IVOR7,r4 /* 7: floating point unavailable */
364 mtspr IVOR8,r4 /* 8: System call */
365 /* 9: Auxiliary processor unavailable(unsupported) */
367 mtspr IVOR10,r4 /* 10: Decrementer */
368 li r4,IntervalTimer@l
369 mtspr IVOR11,r4 /* 11: Interval timer */
370 li r4,WatchdogTimer@l
371 mtspr IVOR12,r4 /* 12: Watchdog timer */
373 mtspr IVOR13,r4 /* 13: Data TLB error */
374 li r4,InstructionTLBError@l
375 mtspr IVOR14,r4 /* 14: Instruction TLB error */
376 li r4,DebugBreakpoint@l
377 mtspr IVOR15,r4 /* 15: Debug */
380 /* Clear and set up some registers. */
383 mtspr DEC,r0 /* prevent dec exceptions */
384 mttbl r0 /* prevent fit & wdt exceptions */
386 mtspr TSR,r1 /* clear all timer exception status */
387 mtspr TCR,r0 /* disable all */
388 mtspr ESR,r0 /* clear exception syndrome register */
389 mtspr MCSR,r0 /* machine check syndrome register */
390 mtxer r0 /* clear integer exception register */
392 #ifdef CONFIG_SYS_BOOK3E_HV
393 mtspr MAS8,r0 /* make sure MAS8 is clear */
396 /* Enable Time Base and Select Time Base Clock */
397 lis r0,HID0_EMCP@h /* Enable machine check */
398 #if defined(CONFIG_ENABLE_36BIT_PHYS)
399 ori r0,r0,HID0_ENMAS7@l /* Enable MAS7 */
401 #ifndef CONFIG_E500MC
402 ori r0,r0,HID0_TBEN@l /* Enable Timebase */
406 #if !defined(CONFIG_E500MC) && !defined(CONFIG_ARCH_QEMU_E500)
407 li r0,(HID1_ASTME|HID1_ABE)@l /* Addr streaming & broadcast */
410 cmpwi r3,0x50@l /* if we are rev 5.0 or greater set MBDD */
412 /* Set MBDD bit also */
413 ori r0, r0, HID1_MBDD@l
418 #ifdef CONFIG_SYS_FSL_ERRATUM_CPU_A003999
424 /* Enable Branch Prediction */
425 #if defined(CONFIG_BTB)
426 lis r0,BUCSR_ENABLE@h
427 ori r0,r0,BUCSR_ENABLE@l
431 #if defined(CONFIG_SYS_INIT_DBCR)
434 mtspr DBSR,r1 /* Clear all status bits */
435 lis r0,CONFIG_SYS_INIT_DBCR@h /* DBCR0[IDM] must be set */
436 ori r0,r0,CONFIG_SYS_INIT_DBCR@l
441 * Search for the TLB that covers the code we're executing, and shrink it
442 * so that it covers only this 4K page. That will ensure that any other
443 * TLB we create won't interfere with it. We assume that the TLB exists,
444 * which is why we don't check the Valid bit of MAS1. We also assume
447 * This is necessary, for example, when booting from the on-chip ROM,
448 * which (oddly) creates a single 4GB TLB that covers CCSR and DDR.
450 bl nexti /* Find our address */
451 nexti: mflr r1 /* R1 = our PC */
453 mtspr MAS6, r2 /* Assume the current PID and AS are 0 */
456 tlbsx 0, r1 /* This must succeed */
458 mfspr r14, MAS0 /* Save ESEL for later */
459 rlwinm r14, r14, 16, 0xfff
461 /* Set the size of the TLB to 4KB */
464 andc r3, r3, r2 /* Clear the TSIZE bits */
465 ori r3, r3, MAS1_TSIZE(BOOKE_PAGESZ_4K)@l
466 oris r3, r3, MAS1_IPROT@h
470 * Set the base address of the TLB to our PC. We assume that
471 * virtual == physical. We also assume that MAS2_EPN == MAS3_RPN.
474 ori r3, r3, MAS2_EPN@l /* R3 = MAS2_EPN */
476 and r1, r1, r3 /* Our PC, rounded down to the nearest page */
481 #ifdef CONFIG_SYS_FSL_ERRATUM_A004510
484 andi. r15, r2, MAS2_I|MAS2_G /* save the old I/G for later */
485 rlwinm r2, r2, 0, ~MAS2_I
489 mtspr MAS2, r2 /* Set the EPN to our PC base address */
494 mtspr MAS3, r2 /* Set the RPN to our PC base address */
501 * Clear out any other TLB entries that may exist, to avoid conflicts.
502 * Our TLB entry is in r14.
504 li r0, TLBIVAX_ALL | TLBIVAX_TLB0
508 mfspr r4, SPRN_TLB1CFG
509 rlwinm r4, r4, 0, TLBnCFG_NENTRY_MASK
514 rlwinm r5, r3, 16, MAS0_ESEL_MSK
516 beq 2f /* skip the entry we're executing from */
518 oris r5, r5, MAS0_TLBSEL(1)@h
529 #if defined(CONFIG_SYS_PPC_E500_DEBUG_TLB) && !defined(MINIMAL_SPL) && \
530 !defined(CONFIG_NXP_ESBC)
532 * TLB entry for debuggging in AS1
533 * Create temporary TLB entry in AS0 to handle debug exception
534 * As on debug exception MSR is cleared i.e. Address space is changed
535 * to 0. A TLB entry (in AS0) is required to handle debug exception generated
541 * TLB entry is created for IVPR + IVOR15 to map on valid OP code address
542 * bacause flash's virtual address maps to 0xff800000 - 0xffffffff.
543 * and this window is outside of 4K boot window.
545 create_tlb1_entry CONFIG_SYS_PPC_E500_DEBUG_TLB, \
546 0, BOOKE_PAGESZ_4M, \
547 CONFIG_VAL(SYS_MONITOR_BASE) & 0xffc00000, MAS2_I|MAS2_G, \
548 0xffc00000, MAS3_SX|MAS3_SW|MAS3_SR, \
553 * TLB entry is created for IVPR + IVOR15 to map on valid OP code address
554 * because "nexti" will resize TLB to 4K
556 create_tlb1_entry CONFIG_SYS_PPC_E500_DEBUG_TLB, \
557 0, BOOKE_PAGESZ_256K, \
558 CONFIG_VAL(SYS_MONITOR_BASE) & 0xfffc0000, MAS2_I, \
559 CONFIG_VAL(SYS_MONITOR_BASE) & 0xfffc0000, MAS3_SX|MAS3_SW|MAS3_SR, \
565 * Relocate CCSR, if necessary. We relocate CCSR if (obviously) the default
566 * location is not where we want it. This typically happens on a 36-bit
567 * system, where we want to move CCSR to near the top of 36-bit address space.
569 * To move CCSR, we create two temporary TLBs, one for the old location, and
570 * another for the new location. On CoreNet systems, we also need to create
571 * a special, temporary LAW.
573 * As a general rule, TLB0 is used for short-term TLBs, and TLB1 is used for
574 * long-term TLBs, so we use TLB0 here.
576 #if (CONFIG_SYS_CCSRBAR_DEFAULT != CONFIG_SYS_CCSRBAR_PHYS)
578 #if !defined(CONFIG_SYS_CCSRBAR_PHYS_HIGH) || !defined(CONFIG_SYS_CCSRBAR_PHYS_LOW)
579 #error "CONFIG_SYS_CCSRBAR_PHYS_HIGH and CONFIG_SYS_CCSRBAR_PHYS_LOW) must be defined."
584 * Create a TLB for the new location of CCSR. Register R8 is reserved
585 * for the virtual address of this TLB (CONFIG_SYS_CCSRBAR).
587 lis r8, CONFIG_SYS_CCSRBAR@h
588 ori r8, r8, CONFIG_SYS_CCSRBAR@l
589 lis r9, (CONFIG_SYS_CCSRBAR + 0x1000)@h
590 ori r9, r9, (CONFIG_SYS_CCSRBAR + 0x1000)@l
591 create_tlb0_entry 0, \
592 0, BOOKE_PAGESZ_4K, \
593 CONFIG_SYS_CCSRBAR, MAS2_I|MAS2_G, \
594 CONFIG_SYS_CCSRBAR_PHYS_LOW, MAS3_SW|MAS3_SR, \
595 CONFIG_SYS_CCSRBAR_PHYS_HIGH, r3
597 * Create a TLB for the current location of CCSR. Register R9 is reserved
598 * for the virtual address of this TLB (CONFIG_SYS_CCSRBAR + 0x1000).
601 create_tlb0_entry 1, \
602 0, BOOKE_PAGESZ_4K, \
603 CONFIG_SYS_CCSRBAR + 0x1000, MAS2_I|MAS2_G, \
604 CONFIG_SYS_CCSRBAR_DEFAULT, MAS3_SW|MAS3_SR, \
605 0, r3 /* The default CCSR address is always a 32-bit number */
609 * We have a TLB for what we think is the current (old) CCSR. Let's
610 * verify that, otherwise we won't be able to move it.
611 * CONFIG_SYS_CCSRBAR_DEFAULT is always a 32-bit number, so we only
612 * need to compare the lower 32 bits of CCSRBAR on CoreNet systems.
615 lis r0, CONFIG_SYS_CCSRBAR_DEFAULT@h
616 ori r0, r0, CONFIG_SYS_CCSRBAR_DEFAULT@l
617 #ifdef CONFIG_FSL_CORENET
618 lwz r1, 4(r9) /* CCSRBARL */
620 lwz r1, 0(r9) /* CCSRBAR, shifted right by 12 */
627 * If the value we read from CCSRBARL is not what we expect, then
628 * enter an infinite loop. This will at least allow a debugger to
629 * halt execution and examine TLBs, etc. There's no point in going
633 bne infinite_debug_loop
635 #ifdef CONFIG_FSL_CORENET
637 #define CCSR_LAWBARH0 (CONFIG_SYS_CCSRBAR + 0x1000)
638 #define LAW_SIZE_4K 0xb
639 #define CCSRBAR_LAWAR (LAW_EN | (0x1e << 20) | LAW_SIZE_4K)
640 #define CCSRAR_C 0x80000000 /* Commit */
644 * On CoreNet systems, we create the temporary LAW using a special LAW
645 * target ID of 0x1e. LAWBARH is at offset 0xc00 in CCSR.
647 lis r0, CONFIG_SYS_CCSRBAR_PHYS_HIGH@h
648 ori r0, r0, CONFIG_SYS_CCSRBAR_PHYS_HIGH@l
649 lis r1, CONFIG_SYS_CCSRBAR_PHYS_LOW@h
650 ori r1, r1, CONFIG_SYS_CCSRBAR_PHYS_LOW@l
651 lis r2, CCSRBAR_LAWAR@h
652 ori r2, r2, CCSRBAR_LAWAR@l
654 stw r0, 0xc00(r9) /* LAWBARH0 */
655 stw r1, 0xc04(r9) /* LAWBARL0 */
657 stw r2, 0xc08(r9) /* LAWAR0 */
660 * Read back from LAWAR to ensure the update is complete. e500mc
661 * cores also require an isync.
663 lwz r0, 0xc08(r9) /* LAWAR0 */
667 * Read the current CCSRBARH and CCSRBARL using load word instructions.
668 * Follow this with an isync instruction. This forces any outstanding
669 * accesses to configuration space to completion.
672 lwz r0, 0(r9) /* CCSRBARH */
673 lwz r0, 4(r9) /* CCSRBARL */
677 * Write the new values for CCSRBARH and CCSRBARL to their old
678 * locations. The CCSRBARH has a shadow register. When the CCSRBARH
679 * has a new value written it loads a CCSRBARH shadow register. When
680 * the CCSRBARL is written, the CCSRBARH shadow register contents
681 * along with the CCSRBARL value are loaded into the CCSRBARH and
682 * CCSRBARL registers, respectively. Follow this with a sync
686 lis r0, CONFIG_SYS_CCSRBAR_PHYS_HIGH@h
687 ori r0, r0, CONFIG_SYS_CCSRBAR_PHYS_HIGH@l
688 lis r1, CONFIG_SYS_CCSRBAR_PHYS_LOW@h
689 ori r1, r1, CONFIG_SYS_CCSRBAR_PHYS_LOW@l
691 ori r2, r2, CCSRAR_C@l
693 stw r0, 0(r9) /* Write to CCSRBARH */
694 sync /* Make sure we write to CCSRBARH first */
695 stw r1, 4(r9) /* Write to CCSRBARL */
699 * Write a 1 to the commit bit (C) of CCSRAR at the old location.
700 * Follow this with a sync instruction.
705 /* Delete the temporary LAW */
714 #else /* #ifdef CONFIG_FSL_CORENET */
718 * Read the current value of CCSRBAR using a load word instruction
719 * followed by an isync. This forces all accesses to configuration
726 /* CONFIG_SYS_CCSRBAR_PHYS right shifted by 12 */
727 #define CCSRBAR_PHYS_RS12 ((CONFIG_SYS_CCSRBAR_PHYS_HIGH << 20) | \
728 (CONFIG_SYS_CCSRBAR_PHYS_LOW >> 12))
730 /* Write the new value to CCSRBAR. */
731 lis r0, CCSRBAR_PHYS_RS12@h
732 ori r0, r0, CCSRBAR_PHYS_RS12@l
737 * The manual says to perform a load of an address that does not
738 * access configuration space or the on-chip SRAM using an existing TLB,
739 * but that doesn't appear to be necessary. We will do the isync,
745 * Read the contents of CCSRBAR from its new location, followed by
751 #endif /* #ifdef CONFIG_FSL_CORENET */
753 /* Delete the temporary TLBs */
755 delete_tlb0_entry 0, CONFIG_SYS_CCSRBAR, MAS2_I|MAS2_G, r3
756 delete_tlb0_entry 1, CONFIG_SYS_CCSRBAR + 0x1000, MAS2_I|MAS2_G, r3
758 #endif /* #if (CONFIG_SYS_CCSRBAR_DEFAULT != CONFIG_SYS_CCSRBAR_PHYS) */
760 #if defined(CONFIG_SYS_FSL_QORIQ_CHASSIS2) && defined(CONFIG_E6500)
763 * Create a TLB for the MMR location of CCSR
764 * to access L2CSR0 register
766 create_tlb0_entry 0, \
767 0, BOOKE_PAGESZ_4K, \
768 CONFIG_SYS_CCSRBAR + 0xC20000, MAS2_I|MAS2_G, \
769 CONFIG_SYS_CCSRBAR_PHYS_LOW + 0xC20000, MAS3_SW|MAS3_SR, \
770 CONFIG_SYS_CCSRBAR_PHYS_HIGH, r3
772 enable_l2_cluster_l2:
773 /* enable L2 cache */
774 lis r3, (CONFIG_SYS_CCSRBAR + 0xC20000)@h
775 ori r3, r3, (CONFIG_SYS_CCSRBAR + 0xC20000)@l
776 li r4, 33 /* stash id */
778 lis r4, (L2CSR0_L2FI|L2CSR0_L2LFC)@h
779 ori r4, r4, (L2CSR0_L2FI|L2CSR0_L2LFC)@l
781 stw r4, 0(r3) /* invalidate L2 */
782 /* Poll till the bits are cleared */
790 /* L2PE must be set before L2 cache is enabled */
791 lis r4, (L2CSR0_L2PE)@h
792 ori r4, r4, (L2CSR0_L2PE)@l
794 stw r4, 0(r3) /* enable L2 parity/ECC error checking */
795 /* Poll till the bit is set */
803 lis r4, (L2CSR0_L2E|L2CSR0_L2PE)@h
804 ori r4, r4, (L2CSR0_L2REP_MODE)@l
806 stw r4, 0(r3) /* enable L2 */
807 /* Poll till the bit is set */
816 delete_tlb0_entry 0, CONFIG_SYS_CCSRBAR + 0xC20000, MAS2_I|MAS2_G, r3
820 * Enable the L1. On e6500, this has to be done
821 * after the L2 is up.
824 #ifdef CONFIG_SYS_CACHE_STASHING
825 /* set stash id to (coreID) * 2 + 32 + L1 CT (0) */
830 /* Enable/invalidate the I-Cache */
831 lis r2,(L1CSR1_ICFI|L1CSR1_ICLFR)@h
832 ori r2,r2,(L1CSR1_ICFI|L1CSR1_ICLFR)@l
839 lis r3,(L1CSR1_CPE|L1CSR1_ICE)@h
840 ori r3,r3,(L1CSR1_CPE|L1CSR1_ICE)@l
845 andi. r1,r3,L1CSR1_ICE@l
848 /* Enable/invalidate the D-Cache */
849 lis r2,(L1CSR0_DCFI|L1CSR0_DCLFR)@h
850 ori r2,r2,(L1CSR0_DCFI|L1CSR0_DCLFR)@l
857 lis r3,(L1CSR0_CPE|L1CSR0_DCE)@h
858 ori r3,r3,(L1CSR0_CPE|L1CSR0_DCE)@l
863 andi. r1,r3,L1CSR0_DCE@l
865 #ifdef CONFIG_SYS_FSL_ERRATUM_A004510
866 #define DCSR_LAWBARH0 (CONFIG_SYS_CCSRBAR + 0x1000)
867 #define LAW_SIZE_1M 0x13
868 #define DCSRBAR_LAWAR (LAW_EN | (0x1d << 20) | LAW_SIZE_1M)
874 * Create a TLB entry for CCSR
876 * We're executing out of TLB1 entry in r14, and that's the only
877 * TLB entry that exists. To allocate some TLB entries for our
878 * own use, flip a bit high enough that we won't flip it again
883 lis r0, MAS0_TLBSEL(1)@h
884 rlwimi r0, r8, 16, MAS0_ESEL_MSK
885 lis r1, FSL_BOOKE_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_16M)@h
886 ori r1, r1, FSL_BOOKE_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_16M)@l
887 lis r7, CONFIG_SYS_CCSRBAR@h
888 ori r7, r7, CONFIG_SYS_CCSRBAR@l
889 ori r2, r7, MAS2_I|MAS2_G
890 lis r3, FSL_BOOKE_MAS3(CONFIG_SYS_CCSRBAR_PHYS_LOW, 0, (MAS3_SW|MAS3_SR))@h
891 ori r3, r3, FSL_BOOKE_MAS3(CONFIG_SYS_CCSRBAR_PHYS_LOW, 0, (MAS3_SW|MAS3_SR))@l
892 lis r4, CONFIG_SYS_CCSRBAR_PHYS_HIGH@h
893 ori r4, r4, CONFIG_SYS_CCSRBAR_PHYS_HIGH@l
904 /* Map DCSR temporarily to physical address zero */
906 lis r3, DCSRBAR_LAWAR@h
907 ori r3, r3, DCSRBAR_LAWAR@l
909 stw r0, 0xc00(r7) /* LAWBARH0 */
910 stw r0, 0xc04(r7) /* LAWBARL0 */
912 stw r3, 0xc08(r7) /* LAWAR0 */
914 /* Read back from LAWAR to ensure the update is complete. */
915 lwz r3, 0xc08(r7) /* LAWAR0 */
918 /* Create a TLB entry for DCSR at zero */
921 lis r0, MAS0_TLBSEL(1)@h
922 rlwimi r0, r9, 16, MAS0_ESEL_MSK
923 lis r1, FSL_BOOKE_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_1M)@h
924 ori r1, r1, FSL_BOOKE_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_1M)@l
925 li r6, 0 /* DCSR effective address */
926 ori r2, r6, MAS2_I|MAS2_G
927 li r3, MAS3_SW|MAS3_SR
939 /* enable the timebase */
940 #define CTBENR 0xe2084
942 addis r4, r7, CTBENR@ha
948 .macro erratum_set_ccsr offset value
949 addis r3, r7, \offset@ha
951 addi r3, r3, \offset@l
956 .macro erratum_set_dcsr offset value
957 addis r3, r6, \offset@ha
959 addi r3, r3, \offset@l
964 erratum_set_dcsr 0xb0e08 0xe0201800
965 erratum_set_dcsr 0xb0e18 0xe0201800
966 erratum_set_dcsr 0xb0e38 0xe0400000
967 erratum_set_dcsr 0xb0008 0x00900000
968 erratum_set_dcsr 0xb0e40 0xe00a0000
969 erratum_set_ccsr 0x18600 CONFIG_SYS_FSL_CORENET_SNOOPVEC_COREONLY
970 #ifdef CONFIG_RAMBOOT_PBL
971 erratum_set_ccsr 0x10f00 0x495e5000
973 erratum_set_ccsr 0x10f00 0x415e5000
975 erratum_set_ccsr 0x11f00 0x415e5000
977 /* Make temp mapping uncacheable again, if it was initially */
982 rlwimi r4, r15, 0, MAS2_I
983 rlwimi r4, r15, 0, MAS2_G
990 /* Clear the cache */
991 lis r3,(L1CSR1_ICFI|L1CSR1_ICLFR)@h
992 ori r3,r3,(L1CSR1_ICFI|L1CSR1_ICLFR)@l
1002 lis r3,(L1CSR1_CPE|L1CSR1_ICE)@h
1003 ori r3,r3,(L1CSR1_CPE|L1CSR1_ICE)@l
1006 mtspr SPRN_L1CSR1,r3
1009 mfspr r4,SPRN_L1CSR1
1013 /* Remove temporary mappings */
1014 lis r0, MAS0_TLBSEL(1)@h
1015 rlwimi r0, r9, 16, MAS0_ESEL_MSK
1025 stw r3, 0xc08(r7) /* LAWAR0 */
1029 lis r0, MAS0_TLBSEL(1)@h
1030 rlwimi r0, r8, 16, MAS0_ESEL_MSK
1041 /* r3 = addr, r4 = value, clobbers r5, r11, r12 */
1043 /* Lock two cache lines into I-Cache */
1045 mfspr r11, SPRN_L1CSR1
1046 rlwinm r11, r11, 0, ~L1CSR1_ICUL
1049 mtspr SPRN_L1CSR1, r11
1055 addi r5, r5, 2f - 5b
1060 mfspr r11, SPRN_L1CSR1
1061 3: andi. r11, r11, L1CSR1_ICUL
1068 mfspr r11, SPRN_L1CSR1
1069 3: andi. r11, r11, L1CSR1_ICUL
1074 /* Inside a locked cacheline, wait a while, write, then wait a while */
1078 addis r11, r5, 0x10000@h /* wait 65536 timebase ticks */
1079 4: mfspr r5, SPRN_TBRL
1086 addis r11, r5, 0x10000@h /* wait 65536 timebase ticks */
1087 4: mfspr r5, SPRN_TBRL
1094 * Fill out the rest of this cache line and the next with nops,
1095 * to ensure that nothing outside the locked area will be
1096 * fetched due to a branch.
1103 mfspr r11, SPRN_L1CSR1
1104 rlwinm r11, r11, 0, ~L1CSR1_ICUL
1107 mtspr SPRN_L1CSR1, r11
1116 create_init_ram_area:
1117 lis r6,FSL_BOOKE_MAS0(1, 15, 0)@h
1118 ori r6,r6,FSL_BOOKE_MAS0(1, 15, 0)@l
1121 /* create a temp mapping in AS=1 to the 4M boot window */
1122 create_tlb1_entry 15, \
1123 1, BOOKE_PAGESZ_4M, \
1124 CONFIG_VAL(SYS_MONITOR_BASE) & 0xffc00000, MAS2_I|MAS2_G, \
1125 0xffc00000, MAS3_SX|MAS3_SW|MAS3_SR, \
1128 #elif !defined(CONFIG_SYS_RAMBOOT) && defined(CONFIG_NXP_ESBC)
1129 /* create a temp mapping in AS = 1 for Flash mapping
1130 * created by PBL for ISBC code
1132 create_tlb1_entry 15, \
1133 1, BOOKE_PAGESZ_1M, \
1134 CONFIG_VAL(SYS_MONITOR_BASE) & 0xfff00000, MAS2_I|MAS2_G, \
1135 CONFIG_SYS_PBI_FLASH_WINDOW & 0xfff00000, MAS3_SX|MAS3_SW|MAS3_SR, \
1139 * For Targets without CONFIG_SPL like P3, P5
1140 * and for targets with CONFIG_SPL like T1, T2, T4, only for
1141 * u-boot-spl i.e. CONFIG_SPL_BUILD
1143 #elif defined(CONFIG_RAMBOOT_PBL) && defined(CONFIG_NXP_ESBC) && \
1144 (!defined(CONFIG_SPL) || defined(CONFIG_SPL_BUILD))
1145 /* create a temp mapping in AS = 1 for mapping CONFIG_VAL(SYS_MONITOR_BASE)
1146 * to L3 Address configured by PBL for ISBC code
1148 create_tlb1_entry 15, \
1149 1, BOOKE_PAGESZ_1M, \
1150 CONFIG_VAL(SYS_MONITOR_BASE) & 0xfff00000, MAS2_I|MAS2_G, \
1151 CONFIG_SYS_INIT_L3_ADDR & 0xfff00000, MAS3_SX|MAS3_SW|MAS3_SR, \
1156 * create a temp mapping in AS=1 to the 1M CONFIG_VAL(SYS_MONITOR_BASE) space, the main
1157 * image has been relocated to CONFIG_VAL(SYS_MONITOR_BASE) on the second stage.
1159 create_tlb1_entry 15, \
1160 1, BOOKE_PAGESZ_1M, \
1161 CONFIG_VAL(SYS_MONITOR_BASE) & 0xfff00000, MAS2_I|MAS2_G, \
1162 CONFIG_VAL(SYS_MONITOR_BASE) & 0xfff00000, MAS3_SX|MAS3_SW|MAS3_SR, \
1166 /* create a temp mapping in AS=1 to the stack */
1167 #if defined(CONFIG_SYS_INIT_RAM_ADDR_PHYS_LOW) && \
1168 defined(CONFIG_SYS_INIT_RAM_ADDR_PHYS_HIGH)
1169 create_tlb1_entry 14, \
1170 1, BOOKE_PAGESZ_16K, \
1171 CONFIG_SYS_INIT_RAM_ADDR, 0, \
1172 CONFIG_SYS_INIT_RAM_ADDR_PHYS_LOW, MAS3_SX|MAS3_SW|MAS3_SR, \
1173 CONFIG_SYS_INIT_RAM_ADDR_PHYS_HIGH, r6
1176 create_tlb1_entry 14, \
1177 1, BOOKE_PAGESZ_16K, \
1178 CONFIG_SYS_INIT_RAM_ADDR, 0, \
1179 CONFIG_SYS_INIT_RAM_ADDR, MAS3_SX|MAS3_SW|MAS3_SR, \
1183 lis r6,MSR_IS|MSR_DS|MSR_DE@h
1184 ori r6,r6,MSR_IS|MSR_DS|MSR_DE@l
1186 ori r7,r7,switch_as@l
1193 /* L1 DCache is used for initial RAM */
1195 /* Allocate Initial RAM in data cache.
1197 lis r3,CONFIG_SYS_INIT_RAM_ADDR@h
1198 ori r3,r3,CONFIG_SYS_INIT_RAM_ADDR@l
1201 /* cache size * 1024 / (2 * L1 line size) */
1202 slwi r2, r2, (10 - 1 - L1_CACHE_SHIFT)
1207 #ifdef CONFIG_E6500 /* Lock/unlock L2 cache long with L1 */
1213 addi r3,r3,CONFIG_SYS_CACHELINE_SIZE
1216 /* Jump out the last 4K page and continue to 'normal' start */
1217 #if defined(CONFIG_SYS_RAMBOOT) || defined(CONFIG_SPL)
1218 /* We assume that we're already running at the address we're linked at */
1221 /* Calculate absolute address in FLASH and jump there */
1222 /*--------------------------------------------------------------*/
1223 lis r3,_start_cont@h
1224 ori r3,r3,_start_cont@l
1232 /* Setup the stack in initial RAM,could be L2-as-SRAM or L1 dcache*/
1233 lis r3,(CONFIG_SYS_INIT_RAM_ADDR)@h
1234 ori r3,r3,((CONFIG_SYS_INIT_SP_OFFSET-16)&~0xf)@l /* Align to 16 */
1236 #if CONFIG_VAL(SYS_MALLOC_F_LEN)
1237 #if CONFIG_VAL(SYS_MALLOC_F_LEN) + GENERATED_GBL_DATA_SIZE > CONFIG_SYS_INIT_RAM_SIZE
1238 #error "SYS_MALLOC_F_LEN too large to fit into initial RAM."
1241 /* Leave 16+ byte for back chain termination and NULL return address */
1242 subi r3,r3,((CONFIG_VAL(SYS_MALLOC_F_LEN)+16+15)&~0xf)
1246 lis r4,(CONFIG_SYS_INIT_RAM_ADDR)@h
1247 ori r4,r4,(CONFIG_SYS_INIT_RAM_SIZE)@l
1256 #if CONFIG_VAL(SYS_MALLOC_F_LEN)
1257 lis r4,SYS_INIT_SP_ADDR@h
1258 ori r4,r4,SYS_INIT_SP_ADDR@l
1260 addi r3,r3,16 /* Pre-relocation malloc area */
1261 stw r3,GD_MALLOC_BASE(r4)
1265 stw r0,0(r3) /* Terminate Back Chain */
1266 stw r0,+4(r3) /* NULL return address. */
1267 mr r1,r3 /* Transfer to SP(r1) */
1270 /* Needed for -msingle-pic-base */
1271 bl _GLOBAL_OFFSET_TABLE_@local-4
1274 /* Pass our potential ePAPR device tree pointer to cpu_init_early_f */
1279 /* switch back to AS = 0 */
1280 lis r3,(MSR_CE|MSR_ME|MSR_DE)@h
1281 ori r3,r3,(MSR_CE|MSR_ME|MSR_DE)@l
1285 bl cpu_init_f /* return boot_flag for calling board_init_f */
1289 /* NOTREACHED - board_init_f() does not return */
1292 .globl _start_of_vectors
1295 /* Critical input. */
1296 CRIT_EXCEPTION(0x0100, CriticalInput, CritcalInputException)
1299 MCK_EXCEPTION(0x200, MachineCheck, MachineCheckException)
1301 /* Data Storage exception. */
1302 STD_EXCEPTION(0x0300, DataStorage, UnknownException)
1304 /* Instruction Storage exception. */
1305 STD_EXCEPTION(0x0400, InstStorage, UnknownException)
1307 /* External Interrupt exception. */
1308 STD_EXCEPTION(0x0500, ExtInterrupt, ExtIntException)
1310 /* Alignment exception. */
1312 EXCEPTION_PROLOG(SRR0, SRR1)
1317 addi r3,r1,STACK_FRAME_OVERHEAD
1318 EXC_XFER_TEMPLATE(0x600, Alignment, AlignmentException,
1319 MSR_KERNEL, COPY_EE)
1321 /* Program check exception */
1323 EXCEPTION_PROLOG(SRR0, SRR1)
1324 addi r3,r1,STACK_FRAME_OVERHEAD
1325 EXC_XFER_TEMPLATE(0x700, ProgramCheck, ProgramCheckException,
1326 MSR_KERNEL, COPY_EE)
1328 /* No FPU on MPC85xx. This exception is not supposed to happen.
1330 STD_EXCEPTION(0x0800, FPUnavailable, UnknownException)
1331 STD_EXCEPTION(0x0900, SystemCall, UnknownException)
1332 STD_EXCEPTION(0x0a00, Decrementer, timer_interrupt)
1333 STD_EXCEPTION(0x0b00, IntervalTimer, UnknownException)
1334 STD_EXCEPTION(0x0c00, WatchdogTimer, UnknownException)
1336 STD_EXCEPTION(0x0d00, DataTLBError, UnknownException)
1337 STD_EXCEPTION(0x0e00, InstructionTLBError, UnknownException)
1339 CRIT_EXCEPTION(0x0f00, DebugBreakpoint, DebugException )
1341 .globl _end_of_vectors
1345 . = . + (0x100 - ( . & 0xff )) /* align for debug */
1348 * This code finishes saving the registers to the exception frame
1349 * and jumps to the appropriate handler for the exception.
1350 * Register r21 is pointer into trap frame, r1 has new stack pointer.
1351 * r23 is the address of the handler.
1353 .globl transfer_to_handler
1354 transfer_to_handler:
1362 mtspr SPRG2,r22 /* r1 is now kernel sp */
1364 mtctr r23 /* virtual address of handler */
1369 mfmsr r28 /* Disable interrupts */
1373 SYNC /* Some chip revs need this... */
1388 lwz r2,_NIP(r1) /* Restore environment */
1402 .globl invalidate_icache
1405 ori r0,r0,L1CSR1_ICFI
1410 blr /* entire I cache */
1412 .globl invalidate_dcache
1415 ori r0,r0,L1CSR0_DCFI
1422 .globl icache_enable
1425 bl invalidate_icache
1429 ori r4,r4,(L1CSR1_CPE | L1CSR1_ICE)@l
1430 oris r4,r4,(L1CSR1_CPE | L1CSR1_ICE)@h
1435 .globl icache_disable
1439 ori r3,r3,L1CSR1_ICE
1445 .globl icache_status
1448 andi. r3,r3,L1CSR1_ICE
1451 .globl dcache_enable
1454 bl invalidate_dcache
1458 ori r0,r0,(L1CSR0_CPE | L1CSR0_DCE)@l
1459 oris r0,r0,(L1CSR0_CPE | L1CSR0_DCE)@h
1466 .globl dcache_disable
1470 ori r4,r4,L1CSR0_DCE
1476 .globl dcache_status
1479 andi. r3,r3,L1CSR0_DCE
1482 /*------------------------------------------------------------------------------- */
1484 /* Description: Input 8 bits */
1485 /*------------------------------------------------------------------------------- */
1491 /*------------------------------------------------------------------------------- */
1492 /* Function: out8 */
1493 /* Description: Output 8 bits */
1494 /*------------------------------------------------------------------------------- */
1501 /*------------------------------------------------------------------------------- */
1502 /* Function: out16 */
1503 /* Description: Output 16 bits */
1504 /*------------------------------------------------------------------------------- */
1511 /*------------------------------------------------------------------------------- */
1512 /* Function: out16r */
1513 /* Description: Byte reverse and output 16 bits */
1514 /*------------------------------------------------------------------------------- */
1521 /*------------------------------------------------------------------------------- */
1522 /* Function: out32 */
1523 /* Description: Output 32 bits */
1524 /*------------------------------------------------------------------------------- */
1531 /*------------------------------------------------------------------------------- */
1532 /* Function: out32r */
1533 /* Description: Byte reverse and output 32 bits */
1534 /*------------------------------------------------------------------------------- */
1541 /*------------------------------------------------------------------------------- */
1542 /* Function: in16 */
1543 /* Description: Input 16 bits */
1544 /*------------------------------------------------------------------------------- */
1550 /*------------------------------------------------------------------------------- */
1551 /* Function: in16r */
1552 /* Description: Input 16 bits and byte reverse */
1553 /*------------------------------------------------------------------------------- */
1559 /*------------------------------------------------------------------------------- */
1560 /* Function: in32 */
1561 /* Description: Input 32 bits */
1562 /*------------------------------------------------------------------------------- */
1568 /*------------------------------------------------------------------------------- */
1569 /* Function: in32r */
1570 /* Description: Input 32 bits and byte reverse */
1571 /*------------------------------------------------------------------------------- */
1576 #endif /* !MINIMAL_SPL */
1578 /*------------------------------------------------------------------------------*/
1581 * void write_tlb(mas0, mas1, mas2, mas3, mas7)
1589 #ifdef CONFIG_ENABLE_36BIT_PHYS
1593 #ifdef CONFIG_SYS_BOOK3E_HV
1603 * void relocate_code(addr_sp, gd, addr_moni)
1605 * This "function" does not return, instead it continues in RAM
1606 * after relocating the monitor code.
1610 * r5 = length in bytes
1611 * r6 = cachelinesize
1613 .globl relocate_code
1615 mr r1,r3 /* Set new stack pointer */
1616 mr r9,r4 /* Save copy of Init Data pointer */
1617 mr r10,r5 /* Save copy of Destination Address */
1620 #ifndef CONFIG_SPL_SKIP_RELOCATE
1621 mr r3,r5 /* Destination Address */
1622 lis r4,CONFIG_VAL(SYS_MONITOR_BASE)@h /* Source Address */
1623 ori r4,r4,CONFIG_VAL(SYS_MONITOR_BASE)@l
1624 lwz r5,GOT(__init_end)
1626 li r6,CONFIG_SYS_CACHELINE_SIZE /* Cache Line Size */
1631 * New GOT-PTR = (old GOT-PTR - CONFIG_VAL(SYS_MONITOR_BASE)) + Destination Address
1637 /* First our own GOT */
1639 /* the the one used by the C code */
1649 beq cr1,4f /* In place copy is not necessary */
1650 beq 7f /* Protect against 0 count */
1669 * Now flush the cache: note that we must start from a cache aligned
1670 * address. Otherwise we might miss one cache line.
1674 beq 7f /* Always flush prefetch queue in any case */
1682 sync /* Wait for all dcbst to complete on bus */
1688 7: sync /* Wait for all icbi to complete on bus */
1692 * We are done. Do not return, instead branch to second part of board
1693 * initialization, now running from RAM.
1696 addi r0,r10,in_ram - CONFIG_VAL(SYS_MONITOR_BASE)
1699 * As IVPR is going to point RAM address,
1700 * Make sure IVOR15 has valid opcode to support debugger
1705 * Re-point the IVPR at RAM
1710 blr /* NEVER RETURNS! */
1716 * Relocation Function, r12 point to got2+0x8000
1718 * Adjust got2 pointers, no need to check for 0, this code
1719 * already puts a few entries in the table.
1721 li r0,__got2_entries@sectoff@l
1722 la r3,GOT(_GOT2_TABLE_)
1723 lwz r11,GOT(_GOT2_TABLE_)
1735 * Now adjust the fixups and the pointers to the fixups
1736 * in case we need to move ourselves again.
1738 li r0,__fixup_entries@sectoff@l
1739 lwz r3,GOT(_FIXUP_TABLE_)
1755 * Now clear BSS segment
1757 lwz r3,GOT(__bss_start)
1758 lwz r4,GOT(__bss_end)
1771 mr r3,r9 /* Init Data pointer */
1772 mr r4,r10 /* Destination Address */
1777 * Copy exception vector code to low memory
1780 * r7: source address, r8: end address, r9: target address
1785 bl _GLOBAL_OFFSET_TABLE_-4
1788 /* Update IVORs as per relocation */
1791 lwz r4,CriticalInput@got(r12)
1792 mtspr IVOR0,r4 /* 0: Critical input */
1793 lwz r4,MachineCheck@got(r12)
1794 mtspr IVOR1,r4 /* 1: Machine check */
1795 lwz r4,DataStorage@got(r12)
1796 mtspr IVOR2,r4 /* 2: Data storage */
1797 lwz r4,InstStorage@got(r12)
1798 mtspr IVOR3,r4 /* 3: Instruction storage */
1799 lwz r4,ExtInterrupt@got(r12)
1800 mtspr IVOR4,r4 /* 4: External interrupt */
1801 lwz r4,Alignment@got(r12)
1802 mtspr IVOR5,r4 /* 5: Alignment */
1803 lwz r4,ProgramCheck@got(r12)
1804 mtspr IVOR6,r4 /* 6: Program check */
1805 lwz r4,FPUnavailable@got(r12)
1806 mtspr IVOR7,r4 /* 7: floating point unavailable */
1807 lwz r4,SystemCall@got(r12)
1808 mtspr IVOR8,r4 /* 8: System call */
1809 /* 9: Auxiliary processor unavailable(unsupported) */
1810 lwz r4,Decrementer@got(r12)
1811 mtspr IVOR10,r4 /* 10: Decrementer */
1812 lwz r4,IntervalTimer@got(r12)
1813 mtspr IVOR11,r4 /* 11: Interval timer */
1814 lwz r4,WatchdogTimer@got(r12)
1815 mtspr IVOR12,r4 /* 12: Watchdog timer */
1816 lwz r4,DataTLBError@got(r12)
1817 mtspr IVOR13,r4 /* 13: Data TLB error */
1818 lwz r4,InstructionTLBError@got(r12)
1819 mtspr IVOR14,r4 /* 14: Instruction TLB error */
1820 lwz r4,DebugBreakpoint@got(r12)
1821 mtspr IVOR15,r4 /* 15: Debug */
1826 .globl unlock_ram_in_cache
1827 unlock_ram_in_cache:
1828 /* invalidate the INIT_RAM section */
1829 lis r3,(CONFIG_SYS_INIT_RAM_ADDR & ~(CONFIG_SYS_CACHELINE_SIZE-1))@h
1830 ori r3,r3,(CONFIG_SYS_INIT_RAM_ADDR & ~(CONFIG_SYS_CACHELINE_SIZE-1))@l
1833 slwi r4,r4,(10 - 1 - L1_CACHE_SHIFT)
1836 #ifdef CONFIG_E6500 /* lock/unlock L2 cache long with L1 */
1842 addi r3,r3,CONFIG_SYS_CACHELINE_SIZE
1846 /* Invalidate the TLB entries for the cache */
1847 lis r3,CONFIG_SYS_INIT_RAM_ADDR@h
1848 ori r3,r3,CONFIG_SYS_INIT_RAM_ADDR@l
1861 mfspr r3,SPRN_L1CFG0
1863 rlwinm r5,r3,9,3 /* Extract cache block size */
1864 twlgti r5,1 /* Only 32 and 64 byte cache blocks
1865 * are currently defined.
1868 subfic r6,r5,2 /* r6 = log2(1KiB / cache block size) -
1869 * log2(number of ways)
1871 slw r5,r4,r5 /* r5 = cache block size */
1873 rlwinm r7,r3,0,0xff /* Extract number of KiB in the cache */
1874 mulli r7,r7,13 /* An 8-way cache will require 13
1879 /* save off HID0 and set DCFA */
1881 ori r9,r8,HID0_DCFA@l
1888 1: lwz r3,0(r4) /* Load... */
1896 1: dcbf 0,r4 /* ...and flush. */
1905 #endif /* !MINIMAL_SPL */