2 * Copyright 2004, 2007-2011 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 */
48 * Set up GOT: Global Offset Table
50 * Use r12 to access the GOT
53 GOT_ENTRY(_GOT2_TABLE_)
54 GOT_ENTRY(_FIXUP_TABLE_)
56 #ifndef CONFIG_NAND_SPL
58 GOT_ENTRY(_start_of_vectors)
59 GOT_ENTRY(_end_of_vectors)
60 GOT_ENTRY(transfer_to_handler)
64 GOT_ENTRY(__bss_end__)
65 GOT_ENTRY(__bss_start)
69 * e500 Startup -- after reset only the last 4KB of the effective
70 * address space is mapped in the MMU L2 TLB1 Entry0. The .bootpg
71 * section is located at THIS LAST page and basically does three
72 * things: clear some registers, set up exception tables and
73 * add more TLB entries for 'larger spaces'(e.g. the boot rom) to
74 * continue the boot procedure.
76 * Once the boot rom is mapped by TLB entries we can proceed
77 * with normal startup.
86 /* clear registers/arrays not reset by hardware */
90 mtspr L1CSR0,r0 /* invalidate d-cache */
91 mtspr L1CSR1,r0 /* invalidate i-cache */
94 mtspr DBSR,r1 /* Clear all valid bits */
97 * Enable L1 Caches early
101 #if defined(CONFIG_E500MC) && defined(CONFIG_SYS_CACHE_STASHING)
102 /* set stash id to (coreID) * 2 + 32 + L1 CT (0) */
107 /* Enable/invalidate the I-Cache */
108 lis r2,(L1CSR1_ICFI|L1CSR1_ICLFR)@h
109 ori r2,r2,(L1CSR1_ICFI|L1CSR1_ICLFR)@l
116 lis r3,(L1CSR1_CPE|L1CSR1_ICE)@h
117 ori r3,r3,(L1CSR1_CPE|L1CSR1_ICE)@l
122 andi. r1,r3,L1CSR1_ICE@l
125 /* Enable/invalidate the D-Cache */
126 lis r2,(L1CSR0_DCFI|L1CSR0_DCLFR)@h
127 ori r2,r2,(L1CSR0_DCFI|L1CSR0_DCLFR)@l
134 lis r3,(L1CSR0_CPE|L1CSR0_DCE)@h
135 ori r3,r3,(L1CSR0_CPE|L1CSR0_DCE)@l
140 andi. r1,r3,L1CSR0_DCE@l
143 /* Setup interrupt vectors */
144 lis r1,CONFIG_SYS_MONITOR_BASE@h
148 mtspr IVOR0,r1 /* 0: Critical input */
150 mtspr IVOR1,r1 /* 1: Machine check */
152 mtspr IVOR2,r1 /* 2: Data storage */
154 mtspr IVOR3,r1 /* 3: Instruction storage */
156 mtspr IVOR4,r1 /* 4: External interrupt */
158 mtspr IVOR5,r1 /* 5: Alignment */
160 mtspr IVOR6,r1 /* 6: Program check */
162 mtspr IVOR7,r1 /* 7: floating point unavailable */
164 mtspr IVOR8,r1 /* 8: System call */
165 /* 9: Auxiliary processor unavailable(unsupported) */
167 mtspr IVOR10,r1 /* 10: Decrementer */
169 mtspr IVOR11,r1 /* 11: Interval timer */
171 mtspr IVOR12,r1 /* 12: Watchdog timer */
173 mtspr IVOR13,r1 /* 13: Data TLB error */
175 mtspr IVOR14,r1 /* 14: Instruction TLB error */
177 mtspr IVOR15,r1 /* 15: Debug */
179 /* Clear and set up some registers. */
182 mtspr DEC,r0 /* prevent dec exceptions */
183 mttbl r0 /* prevent fit & wdt exceptions */
185 mtspr TSR,r1 /* clear all timer exception status */
186 mtspr TCR,r0 /* disable all */
187 mtspr ESR,r0 /* clear exception syndrome register */
188 mtspr MCSR,r0 /* machine check syndrome register */
189 mtxer r0 /* clear integer exception register */
191 #ifdef CONFIG_SYS_BOOK3E_HV
192 mtspr MAS8,r0 /* make sure MAS8 is clear */
195 /* Enable Time Base and Select Time Base Clock */
196 lis r0,HID0_EMCP@h /* Enable machine check */
197 #if defined(CONFIG_ENABLE_36BIT_PHYS)
198 ori r0,r0,HID0_ENMAS7@l /* Enable MAS7 */
200 #ifndef CONFIG_E500MC
201 ori r0,r0,HID0_TBEN@l /* Enable Timebase */
205 #ifndef CONFIG_E500MC
206 li r0,(HID1_ASTME|HID1_ABE)@l /* Addr streaming & broadcast */
209 cmpwi r3,0x50@l /* if we are rev 5.0 or greater set MBDD */
211 /* Set MBDD bit also */
212 ori r0, r0, HID1_MBDD@l
217 /* Enable Branch Prediction */
218 #if defined(CONFIG_BTB)
219 lis r0,BUCSR_ENABLE@h
220 ori r0,r0,BUCSR_ENABLE@l
224 #if defined(CONFIG_SYS_INIT_DBCR)
227 mtspr DBSR,r1 /* Clear all status bits */
228 lis r0,CONFIG_SYS_INIT_DBCR@h /* DBCR0[IDM] must be set */
229 ori r0,r0,CONFIG_SYS_INIT_DBCR@l
233 #ifdef CONFIG_MPC8569
234 #define CONFIG_SYS_LBC_ADDR (CONFIG_SYS_CCSRBAR_DEFAULT + 0x5000)
235 #define CONFIG_SYS_LBCR_ADDR (CONFIG_SYS_LBC_ADDR + 0xd0)
237 /* MPC8569 Rev.0 silcon needs to set bit 13 of LBCR to allow elBC to
238 * use address space which is more than 12bits, and it must be done in
239 * the 4K boot page. So we set this bit here.
242 /* create a temp mapping TLB0[0] for LBCR */
243 lis r6,FSL_BOOKE_MAS0(0, 0, 0)@h
244 ori r6,r6,FSL_BOOKE_MAS0(0, 0, 0)@l
246 lis r7,FSL_BOOKE_MAS1(1, 0, 0, 0, BOOKE_PAGESZ_4K)@h
247 ori r7,r7,FSL_BOOKE_MAS1(1, 0, 0, 0, BOOKE_PAGESZ_4K)@l
249 lis r8,FSL_BOOKE_MAS2(CONFIG_SYS_LBC_ADDR, MAS2_I|MAS2_G)@h
250 ori r8,r8,FSL_BOOKE_MAS2(CONFIG_SYS_LBC_ADDR, MAS2_I|MAS2_G)@l
252 lis r9,FSL_BOOKE_MAS3(CONFIG_SYS_LBC_ADDR, 0,
253 (MAS3_SX|MAS3_SW|MAS3_SR))@h
254 ori r9,r9,FSL_BOOKE_MAS3(CONFIG_SYS_LBC_ADDR, 0,
255 (MAS3_SX|MAS3_SW|MAS3_SR))@l
265 /* Set LBCR register */
266 lis r4,CONFIG_SYS_LBCR_ADDR@h
267 ori r4,r4,CONFIG_SYS_LBCR_ADDR@l
269 lis r5,CONFIG_SYS_LBC_LBCR@h
270 ori r5,r5,CONFIG_SYS_LBC_LBCR@l
274 /* invalidate this temp TLB */
275 lis r4,CONFIG_SYS_LBC_ADDR@h
276 ori r4,r4,CONFIG_SYS_LBC_ADDR@l
280 #endif /* CONFIG_MPC8569 */
282 lis r6,FSL_BOOKE_MAS0(1, 15, 0)@h
283 ori r6,r6,FSL_BOOKE_MAS0(1, 15, 0)@l
285 #ifndef CONFIG_SYS_RAMBOOT
286 /* create a temp mapping in AS=1 to the 4M boot window */
287 lis r7,FSL_BOOKE_MAS1(1, 1, 0, 1, BOOKE_PAGESZ_4M)@h
288 ori r7,r7,FSL_BOOKE_MAS1(1, 1, 0, 1, BOOKE_PAGESZ_4M)@l
290 lis r8,FSL_BOOKE_MAS2(CONFIG_SYS_MONITOR_BASE & 0xffc00000, (MAS2_I|MAS2_G))@h
291 ori r8,r8,FSL_BOOKE_MAS2(CONFIG_SYS_MONITOR_BASE & 0xffc00000, (MAS2_I|MAS2_G))@l
293 /* The 85xx has the default boot window 0xff800000 - 0xffffffff */
294 lis r9,FSL_BOOKE_MAS3(0xffc00000, 0, (MAS3_SX|MAS3_SW|MAS3_SR))@h
295 ori r9,r9,FSL_BOOKE_MAS3(0xffc00000, 0, (MAS3_SX|MAS3_SW|MAS3_SR))@l
298 * create a temp mapping in AS=1 to the 1M CONFIG_SYS_MONITOR_BASE space, the main
299 * image has been relocated to CONFIG_SYS_MONITOR_BASE on the second stage.
301 lis r7,FSL_BOOKE_MAS1(1, 1, 0, 1, BOOKE_PAGESZ_1M)@h
302 ori r7,r7,FSL_BOOKE_MAS1(1, 1, 0, 1, BOOKE_PAGESZ_1M)@l
304 lis r8,FSL_BOOKE_MAS2(CONFIG_SYS_MONITOR_BASE, (MAS2_I|MAS2_G))@h
305 ori r8,r8,FSL_BOOKE_MAS2(CONFIG_SYS_MONITOR_BASE, (MAS2_I|MAS2_G))@l
307 lis r9,FSL_BOOKE_MAS3(CONFIG_SYS_MONITOR_BASE, 0, (MAS3_SX|MAS3_SW|MAS3_SR))@h
308 ori r9,r9,FSL_BOOKE_MAS3(CONFIG_SYS_MONITOR_BASE, 0, (MAS3_SX|MAS3_SW|MAS3_SR))@l
319 /* create a temp mapping in AS=1 to the stack */
320 lis r6,FSL_BOOKE_MAS0(1, 14, 0)@h
321 ori r6,r6,FSL_BOOKE_MAS0(1, 14, 0)@l
323 lis r7,FSL_BOOKE_MAS1(1, 1, 0, 1, BOOKE_PAGESZ_16K)@h
324 ori r7,r7,FSL_BOOKE_MAS1(1, 1, 0, 1, BOOKE_PAGESZ_16K)@l
326 lis r8,FSL_BOOKE_MAS2(CONFIG_SYS_INIT_RAM_ADDR, 0)@h
327 ori r8,r8,FSL_BOOKE_MAS2(CONFIG_SYS_INIT_RAM_ADDR, 0)@l
329 #if defined(CONFIG_SYS_INIT_RAM_ADDR_PHYS_LOW) && \
330 defined(CONFIG_SYS_INIT_RAM_ADDR_PHYS_HIGH)
331 lis r9,FSL_BOOKE_MAS3(CONFIG_SYS_INIT_RAM_ADDR_PHYS_LOW, 0,
332 (MAS3_SX|MAS3_SW|MAS3_SR))@h
333 ori r9,r9,FSL_BOOKE_MAS3(CONFIG_SYS_INIT_RAM_ADDR_PHYS_LOW, 0,
334 (MAS3_SX|MAS3_SW|MAS3_SR))@l
335 li r10,CONFIG_SYS_INIT_RAM_ADDR_PHYS_HIGH
338 lis r9,FSL_BOOKE_MAS3(CONFIG_SYS_INIT_RAM_ADDR, 0, (MAS3_SX|MAS3_SW|MAS3_SR))@h
339 ori r9,r9,FSL_BOOKE_MAS3(CONFIG_SYS_INIT_RAM_ADDR, 0, (MAS3_SX|MAS3_SW|MAS3_SR))@l
350 lis r6,MSR_IS|MSR_DS@h
351 ori r6,r6,MSR_IS|MSR_DS@l
353 ori r7,r7,switch_as@l
360 /* L1 DCache is used for initial RAM */
362 /* Allocate Initial RAM in data cache.
364 lis r3,CONFIG_SYS_INIT_RAM_ADDR@h
365 ori r3,r3,CONFIG_SYS_INIT_RAM_ADDR@l
368 /* cache size * 1024 / (2 * L1 line size) */
369 slwi r2, r2, (10 - 1 - L1_CACHE_SHIFT)
375 addi r3,r3,CONFIG_SYS_CACHELINE_SIZE
378 /* Jump out the last 4K page and continue to 'normal' start */
379 #ifdef CONFIG_SYS_RAMBOOT
382 /* Calculate absolute address in FLASH and jump there */
383 /*--------------------------------------------------------------*/
384 lis r3,CONFIG_SYS_MONITOR_BASE@h
385 ori r3,r3,CONFIG_SYS_MONITOR_BASE@l
386 addi r3,r3,_start_cont - _start + _START_OFFSET
394 .long 0x27051956 /* U-BOOT Magic Number */
395 .globl version_string
397 .ascii U_BOOT_VERSION_STRING, "\0"
402 /* Setup the stack in initial RAM,could be L2-as-SRAM or L1 dcache*/
403 lis r1,CONFIG_SYS_INIT_RAM_ADDR@h
404 ori r1,r1,CONFIG_SYS_INIT_SP_OFFSET@l
408 stwu r0,-4(r1) /* Terminate call chain */
410 stwu r1,-8(r1) /* Save back chain and move SP */
411 lis r0,RESET_VECTOR@h /* Address of reset vector */
412 ori r0,r0,RESET_VECTOR@l
413 stwu r1,-8(r1) /* Save back chain and move SP */
414 stw r0,+12(r1) /* Save return addr (underflow vect) */
419 /* switch back to AS = 0 */
420 lis r3,(MSR_CE|MSR_ME|MSR_DE)@h
421 ori r3,r3,(MSR_CE|MSR_ME|MSR_DE)@l
429 /* NOTREACHED - board_init_f() does not return */
431 #ifndef CONFIG_NAND_SPL
432 . = EXC_OFF_SYS_RESET
433 .globl _start_of_vectors
436 /* Critical input. */
437 CRIT_EXCEPTION(0x0100, CriticalInput, CritcalInputException)
440 MCK_EXCEPTION(0x200, MachineCheck, MachineCheckException)
442 /* Data Storage exception. */
443 STD_EXCEPTION(0x0300, DataStorage, UnknownException)
445 /* Instruction Storage exception. */
446 STD_EXCEPTION(0x0400, InstStorage, UnknownException)
448 /* External Interrupt exception. */
449 STD_EXCEPTION(0x0500, ExtInterrupt, ExtIntException)
451 /* Alignment exception. */
454 EXCEPTION_PROLOG(SRR0, SRR1)
459 addi r3,r1,STACK_FRAME_OVERHEAD
460 EXC_XFER_TEMPLATE(Alignment, AlignmentException, MSR_KERNEL, COPY_EE)
462 /* Program check exception */
465 EXCEPTION_PROLOG(SRR0, SRR1)
466 addi r3,r1,STACK_FRAME_OVERHEAD
467 EXC_XFER_TEMPLATE(ProgramCheck, ProgramCheckException,
470 /* No FPU on MPC85xx. This exception is not supposed to happen.
472 STD_EXCEPTION(0x0800, FPUnavailable, UnknownException)
476 * r0 - SYSCALL number
480 addis r11,r0,0 /* get functions table addr */
481 ori r11,r11,0 /* Note: this code is patched in trap_init */
482 addis r12,r0,0 /* get number of functions */
488 rlwinm r0,r0,2,0,31 /* fn_addr = fn_tbl[r0] */
492 li r20,0xd00-4 /* Get stack pointer */
494 subi r12,r12,12 /* Adjust stack pointer */
495 li r0,0xc00+_end_back-SystemCall
496 cmplw 0,r0,r12 /* Check stack overflow */
507 li r12,0xc00+_back-SystemCall
515 mfmsr r11 /* Disable interrupts */
519 SYNC /* Some chip revs need this... */
523 li r12,0xd00-4 /* restore regs */
533 addi r12,r12,12 /* Adjust stack pointer */
541 STD_EXCEPTION(0x0a00, Decrementer, timer_interrupt)
542 STD_EXCEPTION(0x0b00, IntervalTimer, UnknownException)
543 STD_EXCEPTION(0x0c00, WatchdogTimer, UnknownException)
545 STD_EXCEPTION(0x0d00, DataTLBError, UnknownException)
546 STD_EXCEPTION(0x0e00, InstructionTLBError, UnknownException)
548 CRIT_EXCEPTION(0x0f00, DebugBreakpoint, DebugException )
550 .globl _end_of_vectors
554 . = . + (0x100 - ( . & 0xff )) /* align for debug */
557 * This code finishes saving the registers to the exception frame
558 * and jumps to the appropriate handler for the exception.
559 * Register r21 is pointer into trap frame, r1 has new stack pointer.
561 .globl transfer_to_handler
573 andi. r24,r23,0x3f00 /* get vector offset */
577 mtspr SPRG2,r22 /* r1 is now kernel sp */
579 lwz r24,0(r23) /* virtual address of handler */
580 lwz r23,4(r23) /* where to go when done */
585 rfi /* jump to handler, enable MMU */
588 mfmsr r28 /* Disable interrupts */
592 SYNC /* Some chip revs need this... */
607 lwz r2,_NIP(r1) /* Restore environment */
618 mfmsr r28 /* Disable interrupts */
622 SYNC /* Some chip revs need this... */
637 lwz r2,_NIP(r1) /* Restore environment */
648 mfmsr r28 /* Disable interrupts */
652 SYNC /* Some chip revs need this... */
667 lwz r2,_NIP(r1) /* Restore environment */
681 .globl invalidate_icache
684 ori r0,r0,L1CSR1_ICFI
689 blr /* entire I cache */
691 .globl invalidate_dcache
694 ori r0,r0,L1CSR0_DCFI
714 .globl icache_disable
727 andi. r3,r3,L1CSR1_ICE
745 .globl dcache_disable
758 andi. r3,r3,L1CSR0_DCE
781 /*------------------------------------------------------------------------------- */
783 /* Description: Input 8 bits */
784 /*------------------------------------------------------------------------------- */
790 /*------------------------------------------------------------------------------- */
792 /* Description: Output 8 bits */
793 /*------------------------------------------------------------------------------- */
800 /*------------------------------------------------------------------------------- */
801 /* Function: out16 */
802 /* Description: Output 16 bits */
803 /*------------------------------------------------------------------------------- */
810 /*------------------------------------------------------------------------------- */
811 /* Function: out16r */
812 /* Description: Byte reverse and output 16 bits */
813 /*------------------------------------------------------------------------------- */
820 /*------------------------------------------------------------------------------- */
821 /* Function: out32 */
822 /* Description: Output 32 bits */
823 /*------------------------------------------------------------------------------- */
830 /*------------------------------------------------------------------------------- */
831 /* Function: out32r */
832 /* Description: Byte reverse and output 32 bits */
833 /*------------------------------------------------------------------------------- */
840 /*------------------------------------------------------------------------------- */
842 /* Description: Input 16 bits */
843 /*------------------------------------------------------------------------------- */
849 /*------------------------------------------------------------------------------- */
850 /* Function: in16r */
851 /* Description: Input 16 bits and byte reverse */
852 /*------------------------------------------------------------------------------- */
858 /*------------------------------------------------------------------------------- */
860 /* Description: Input 32 bits */
861 /*------------------------------------------------------------------------------- */
867 /*------------------------------------------------------------------------------- */
868 /* Function: in32r */
869 /* Description: Input 32 bits and byte reverse */
870 /*------------------------------------------------------------------------------- */
875 #endif /* !CONFIG_NAND_SPL */
877 /*------------------------------------------------------------------------------*/
880 * void write_tlb(mas0, mas1, mas2, mas3, mas7)
888 #ifdef CONFIG_ENABLE_36BIT_PHYS
892 #ifdef CONFIG_SYS_BOOK3E_HV
902 * void relocate_code (addr_sp, gd, addr_moni)
904 * This "function" does not return, instead it continues in RAM
905 * after relocating the monitor code.
909 * r5 = length in bytes
914 mr r1,r3 /* Set new stack pointer */
915 mr r9,r4 /* Save copy of Init Data pointer */
916 mr r10,r5 /* Save copy of Destination Address */
919 mr r3,r5 /* Destination Address */
920 lis r4,CONFIG_SYS_MONITOR_BASE@h /* Source Address */
921 ori r4,r4,CONFIG_SYS_MONITOR_BASE@l
922 lwz r5,GOT(__init_end)
924 li r6,CONFIG_SYS_CACHELINE_SIZE /* Cache Line Size */
929 * New GOT-PTR = (old GOT-PTR - CONFIG_SYS_MONITOR_BASE) + Destination Address
935 /* First our own GOT */
937 /* the the one used by the C code */
947 beq cr1,4f /* In place copy is not necessary */
948 beq 7f /* Protect against 0 count */
967 * Now flush the cache: note that we must start from a cache aligned
968 * address. Otherwise we might miss one cache line.
972 beq 7f /* Always flush prefetch queue in any case */
980 sync /* Wait for all dcbst to complete on bus */
986 7: sync /* Wait for all icbi to complete on bus */
990 * Re-point the IVPR at RAM
995 * We are done. Do not return, instead branch to second part of board
996 * initialization, now running from RAM.
999 addi r0,r10,in_ram - _start + _START_OFFSET
1001 blr /* NEVER RETURNS! */
1006 * Relocation Function, r12 point to got2+0x8000
1008 * Adjust got2 pointers, no need to check for 0, this code
1009 * already puts a few entries in the table.
1011 li r0,__got2_entries@sectoff@l
1012 la r3,GOT(_GOT2_TABLE_)
1013 lwz r11,GOT(_GOT2_TABLE_)
1025 * Now adjust the fixups and the pointers to the fixups
1026 * in case we need to move ourselves again.
1028 li r0,__fixup_entries@sectoff@l
1029 lwz r3,GOT(_FIXUP_TABLE_)
1045 * Now clear BSS segment
1047 lwz r3,GOT(__bss_start)
1048 lwz r4,GOT(__bss_end__)
1061 mr r3,r9 /* Init Data pointer */
1062 mr r4,r10 /* Destination Address */
1065 #ifndef CONFIG_NAND_SPL
1067 * Copy exception vector code to low memory
1070 * r7: source address, r8: end address, r9: target address
1074 mflr r4 /* save link register */
1076 lwz r7,GOT(_start_of_vectors)
1077 lwz r8,GOT(_end_of_vectors)
1079 li r9,0x100 /* reset vector always at 0x100 */
1082 bgelr /* return if r7>=r8 - just in case */
1092 * relocate `hdlr' and `int_return' entries
1094 li r7,.L_CriticalInput - _start + _START_OFFSET
1096 li r7,.L_MachineCheck - _start + _START_OFFSET
1098 li r7,.L_DataStorage - _start + _START_OFFSET
1100 li r7,.L_InstStorage - _start + _START_OFFSET
1102 li r7,.L_ExtInterrupt - _start + _START_OFFSET
1104 li r7,.L_Alignment - _start + _START_OFFSET
1106 li r7,.L_ProgramCheck - _start + _START_OFFSET
1108 li r7,.L_FPUnavailable - _start + _START_OFFSET
1110 li r7,.L_Decrementer - _start + _START_OFFSET
1112 li r7,.L_IntervalTimer - _start + _START_OFFSET
1113 li r8,_end_of_vectors - _start + _START_OFFSET
1116 addi r7,r7,0x100 /* next exception vector */
1123 mtlr r4 /* restore link register */
1126 .globl unlock_ram_in_cache
1127 unlock_ram_in_cache:
1128 /* invalidate the INIT_RAM section */
1129 lis r3,(CONFIG_SYS_INIT_RAM_ADDR & ~(CONFIG_SYS_CACHELINE_SIZE-1))@h
1130 ori r3,r3,(CONFIG_SYS_INIT_RAM_ADDR & ~(CONFIG_SYS_CACHELINE_SIZE-1))@l
1133 slwi r4,r4,(10 - 1 - L1_CACHE_SHIFT)
1136 addi r3,r3,CONFIG_SYS_CACHELINE_SIZE
1140 /* Invalidate the TLB entries for the cache */
1141 lis r3,CONFIG_SYS_INIT_RAM_ADDR@h
1142 ori r3,r3,CONFIG_SYS_INIT_RAM_ADDR@l
1155 mfspr r3,SPRN_L1CFG0
1157 rlwinm r5,r3,9,3 /* Extract cache block size */
1158 twlgti r5,1 /* Only 32 and 64 byte cache blocks
1159 * are currently defined.
1162 subfic r6,r5,2 /* r6 = log2(1KiB / cache block size) -
1163 * log2(number of ways)
1165 slw r5,r4,r5 /* r5 = cache block size */
1167 rlwinm r7,r3,0,0xff /* Extract number of KiB in the cache */
1168 mulli r7,r7,13 /* An 8-way cache will require 13
1173 /* save off HID0 and set DCFA */
1175 ori r9,r8,HID0_DCFA@l
1182 1: lwz r3,0(r4) /* Load... */
1190 1: dcbf 0,r4 /* ...and flush. */
1203 #include "fixed_ivor.S"
1205 #endif /* !CONFIG_NAND_SPL */