/*
- * Copyright 2004, 2007-2011 Freescale Semiconductor, Inc.
+ * Copyright 2004, 2007-2012 Freescale Semiconductor, Inc.
* Copyright (C) 2003 Motorola,Inc.
*
* See file CREDITS for list of people who contributed to this
#include <asm-offsets.h>
#include <config.h>
#include <mpc85xx.h>
-#include <timestamp.h>
#include <version.h>
#define _LINUX_CONFIG_H 1 /* avoid reading Linux autoconf.h file */
#include <asm/cache.h>
#include <asm/mmu.h>
-#ifndef CONFIG_IDENT_STRING
-#define CONFIG_IDENT_STRING ""
-#endif
-
#undef MSR_KERNEL
#define MSR_KERNEL ( MSR_ME ) /* Machine Check */
+#if defined(CONFIG_NAND_SPL) || \
+ (defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_INIT_MINIMAL))
+#define MINIMAL_SPL
+#endif
+
+#if !defined(CONFIG_SPL) && !defined(CONFIG_SYS_RAMBOOT) && !defined(CONFIG_SECURE_BOOT)
+#define NOR_BOOT
+#endif
+
/*
* Set up GOT: Global Offset Table
*
GOT_ENTRY(_GOT2_TABLE_)
GOT_ENTRY(_FIXUP_TABLE_)
-#ifndef CONFIG_NAND_SPL
+#ifndef MINIMAL_SPL
GOT_ENTRY(_start)
GOT_ENTRY(_start_of_vectors)
GOT_ENTRY(_end_of_vectors)
#endif
GOT_ENTRY(__init_end)
- GOT_ENTRY(__bss_end__)
+ GOT_ENTRY(__bss_end)
GOT_ENTRY(__bss_start)
END_GOT
.globl _start_e500
_start_e500:
+/* Enable debug exception */
+ li r1,MSR_DE
+ mtmsr r1
+
+#ifdef CONFIG_SYS_FSL_ERRATUM_A004510
+ mfspr r3,SPRN_SVR
+ rlwinm r3,r3,0,0xff
+ li r4,CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV
+ cmpw r3,r4
+ beq 1f
+
+#ifdef CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV2
+ li r4,CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV2
+ cmpw r3,r4
+ beq 1f
+#endif
+
+ /* Not a supported revision affected by erratum */
+ li r27,0
+ b 2f
+
+1: li r27,1 /* Remember for later that we have the erratum */
+ /* Erratum says set bits 55:60 to 001001 */
+ msync
+ isync
+ mfspr r3,SPRN_HDBCR0
+ li r4,0x48
+ rlwimi r3,r4,0,0x1f8
+ mtspr SPRN_HDBCR0,r3
+ isync
+2:
+#endif
+
+#if defined(CONFIG_SECURE_BOOT) && defined(CONFIG_E500MC)
+ /* ISBC uses L2 as stack.
+ * Disable L2 cache here so that u-boot can enable it later
+ * as part of it's normal flow
+ */
+
+ /* Check if L2 is enabled */
+ mfspr r3, SPRN_L2CSR0
+ lis r2, L2CSR0_L2E@h
+ ori r2, r2, L2CSR0_L2E@l
+ and. r4, r3, r2
+ beq l2_disabled
+
+ mfspr r3, SPRN_L2CSR0
+ /* Flush L2 cache */
+ lis r2,(L2CSR0_L2FL)@h
+ ori r2, r2, (L2CSR0_L2FL)@l
+ or r3, r2, r3
+ sync
+ isync
+ mtspr SPRN_L2CSR0,r3
+ isync
+1:
+ mfspr r3, SPRN_L2CSR0
+ and. r1, r3, r2
+ bne 1b
+
+ mfspr r3, SPRN_L2CSR0
+ lis r2, L2CSR0_L2E@h
+ ori r2, r2, L2CSR0_L2E@l
+ andc r4, r3, r2
+ sync
+ isync
+ mtspr SPRN_L2CSR0,r4
+ isync
+
+l2_disabled:
+#endif
/* clear registers/arrays not reset by hardware */
mfspr r1,DBSR
mtspr DBSR,r1 /* Clear all valid bits */
- /*
- * Enable L1 Caches early
- *
- */
-
-#if defined(CONFIG_E500MC) && defined(CONFIG_SYS_CACHE_STASHING)
- /* set stash id to (coreID) * 2 + 32 + L1 CT (0) */
- li r2,(32 + 0)
- mtspr L1CSR2,r2
-#endif
-
- /* Enable/invalidate the I-Cache */
- lis r2,(L1CSR1_ICFI|L1CSR1_ICLFR)@h
- ori r2,r2,(L1CSR1_ICFI|L1CSR1_ICLFR)@l
- mtspr SPRN_L1CSR1,r2
-1:
- mfspr r3,SPRN_L1CSR1
- and. r1,r3,r2
- bne 1b
- lis r3,(L1CSR1_CPE|L1CSR1_ICE)@h
- ori r3,r3,(L1CSR1_CPE|L1CSR1_ICE)@l
- mtspr SPRN_L1CSR1,r3
+ .macro create_tlb1_entry esel ts tsize epn wimg rpn perm phy_high scratch
+ lis \scratch, FSL_BOOKE_MAS0(1, \esel, 0)@h
+ ori \scratch, \scratch, FSL_BOOKE_MAS0(1, \esel, 0)@l
+ mtspr MAS0, \scratch
+ lis \scratch, FSL_BOOKE_MAS1(1, 1, 0, \ts, \tsize)@h
+ ori \scratch, \scratch, FSL_BOOKE_MAS1(1, 1, 0, \ts, \tsize)@l
+ mtspr MAS1, \scratch
+ lis \scratch, FSL_BOOKE_MAS2(\epn, \wimg)@h
+ ori \scratch, \scratch, FSL_BOOKE_MAS2(\epn, \wimg)@l
+ mtspr MAS2, \scratch
+ lis \scratch, FSL_BOOKE_MAS3(\rpn, 0, \perm)@h
+ ori \scratch, \scratch, FSL_BOOKE_MAS3(\rpn, 0, \perm)@l
+ mtspr MAS3, \scratch
+ lis \scratch, \phy_high@h
+ ori \scratch, \scratch, \phy_high@l
+ mtspr MAS7, \scratch
isync
-2:
- mfspr r3,SPRN_L1CSR1
- andi. r1,r3,L1CSR1_ICE@l
- beq 2b
-
- /* Enable/invalidate the D-Cache */
- lis r2,(L1CSR0_DCFI|L1CSR0_DCLFR)@h
- ori r2,r2,(L1CSR0_DCFI|L1CSR0_DCLFR)@l
- mtspr SPRN_L1CSR0,r2
-1:
- mfspr r3,SPRN_L1CSR0
- and. r1,r3,r2
- bne 1b
-
- lis r3,(L1CSR0_CPE|L1CSR0_DCE)@h
- ori r3,r3,(L1CSR0_CPE|L1CSR0_DCE)@l
- mtspr SPRN_L1CSR0,r3
+ msync
+ tlbwe
isync
-2:
- mfspr r3,SPRN_L1CSR0
- andi. r1,r3,L1CSR0_DCE@l
- beq 2b
+ .endm
+
+ .macro create_tlb0_entry esel ts tsize epn wimg rpn perm phy_high scratch
+ lis \scratch, FSL_BOOKE_MAS0(0, \esel, 0)@h
+ ori \scratch, \scratch, FSL_BOOKE_MAS0(0, \esel, 0)@l
+ mtspr MAS0, \scratch
+ lis \scratch, FSL_BOOKE_MAS1(1, 0, 0, \ts, \tsize)@h
+ ori \scratch, \scratch, FSL_BOOKE_MAS1(1, 0, 0, \ts, \tsize)@l
+ mtspr MAS1, \scratch
+ lis \scratch, FSL_BOOKE_MAS2(\epn, \wimg)@h
+ ori \scratch, \scratch, FSL_BOOKE_MAS2(\epn, \wimg)@l
+ mtspr MAS2, \scratch
+ lis \scratch, FSL_BOOKE_MAS3(\rpn, 0, \perm)@h
+ ori \scratch, \scratch, FSL_BOOKE_MAS3(\rpn, 0, \perm)@l
+ mtspr MAS3, \scratch
+ lis \scratch, \phy_high@h
+ ori \scratch, \scratch, \phy_high@l
+ mtspr MAS7, \scratch
+ isync
+ msync
+ tlbwe
+ isync
+ .endm
+
+ .macro delete_tlb1_entry esel scratch
+ lis \scratch, FSL_BOOKE_MAS0(1, \esel, 0)@h
+ ori \scratch, \scratch, FSL_BOOKE_MAS0(1, \esel, 0)@l
+ mtspr MAS0, \scratch
+ li \scratch, 0
+ mtspr MAS1, \scratch
+ isync
+ msync
+ tlbwe
+ isync
+ .endm
+
+ .macro delete_tlb0_entry esel epn wimg scratch
+ lis \scratch, FSL_BOOKE_MAS0(0, \esel, 0)@h
+ ori \scratch, \scratch, FSL_BOOKE_MAS0(0, \esel, 0)@l
+ mtspr MAS0, \scratch
+ li \scratch, 0
+ mtspr MAS1, \scratch
+ lis \scratch, FSL_BOOKE_MAS2(\epn, \wimg)@h
+ ori \scratch, \scratch, FSL_BOOKE_MAS2(\epn, \wimg)@l
+ mtspr MAS2, \scratch
+ isync
+ msync
+ tlbwe
+ isync
+ .endm
+/* Interrupt vectors do not fit in minimal SPL. */
+#if !defined(MINIMAL_SPL)
/* Setup interrupt vectors */
lis r1,CONFIG_SYS_MONITOR_BASE@h
mtspr IVPR,r1
- li r1,0x0100
- mtspr IVOR0,r1 /* 0: Critical input */
- li r1,0x0200
- mtspr IVOR1,r1 /* 1: Machine check */
- li r1,0x0300
- mtspr IVOR2,r1 /* 2: Data storage */
- li r1,0x0400
- mtspr IVOR3,r1 /* 3: Instruction storage */
- li r1,0x0500
- mtspr IVOR4,r1 /* 4: External interrupt */
- li r1,0x0600
- mtspr IVOR5,r1 /* 5: Alignment */
- li r1,0x0700
- mtspr IVOR6,r1 /* 6: Program check */
- li r1,0x0800
- mtspr IVOR7,r1 /* 7: floating point unavailable */
- li r1,0x0900
- mtspr IVOR8,r1 /* 8: System call */
+ lis r3,(CONFIG_SYS_MONITOR_BASE & 0xffff)@h
+ ori r3,r3,(CONFIG_SYS_MONITOR_BASE & 0xffff)@l
+
+ addi r4,r3,CriticalInput - _start + _START_OFFSET
+ mtspr IVOR0,r4 /* 0: Critical input */
+ addi r4,r3,MachineCheck - _start + _START_OFFSET
+ mtspr IVOR1,r4 /* 1: Machine check */
+ addi r4,r3,DataStorage - _start + _START_OFFSET
+ mtspr IVOR2,r4 /* 2: Data storage */
+ addi r4,r3,InstStorage - _start + _START_OFFSET
+ mtspr IVOR3,r4 /* 3: Instruction storage */
+ addi r4,r3,ExtInterrupt - _start + _START_OFFSET
+ mtspr IVOR4,r4 /* 4: External interrupt */
+ addi r4,r3,Alignment - _start + _START_OFFSET
+ mtspr IVOR5,r4 /* 5: Alignment */
+ addi r4,r3,ProgramCheck - _start + _START_OFFSET
+ mtspr IVOR6,r4 /* 6: Program check */
+ addi r4,r3,FPUnavailable - _start + _START_OFFSET
+ mtspr IVOR7,r4 /* 7: floating point unavailable */
+ addi r4,r3,SystemCall - _start + _START_OFFSET
+ mtspr IVOR8,r4 /* 8: System call */
/* 9: Auxiliary processor unavailable(unsupported) */
- li r1,0x0a00
- mtspr IVOR10,r1 /* 10: Decrementer */
- li r1,0x0b00
- mtspr IVOR11,r1 /* 11: Interval timer */
- li r1,0x0c00
- mtspr IVOR12,r1 /* 12: Watchdog timer */
- li r1,0x0d00
- mtspr IVOR13,r1 /* 13: Data TLB error */
- li r1,0x0e00
- mtspr IVOR14,r1 /* 14: Instruction TLB error */
- li r1,0x0f00
- mtspr IVOR15,r1 /* 15: Debug */
+ addi r4,r3,Decrementer - _start + _START_OFFSET
+ mtspr IVOR10,r4 /* 10: Decrementer */
+ addi r4,r3,IntervalTimer - _start + _START_OFFSET
+ mtspr IVOR11,r4 /* 11: Interval timer */
+ addi r4,r3,WatchdogTimer - _start + _START_OFFSET
+ mtspr IVOR12,r4 /* 12: Watchdog timer */
+ addi r4,r3,DataTLBError - _start + _START_OFFSET
+ mtspr IVOR13,r4 /* 13: Data TLB error */
+ addi r4,r3,InstructionTLBError - _start + _START_OFFSET
+ mtspr IVOR14,r4 /* 14: Instruction TLB error */
+ addi r4,r3,DebugBreakpoint - _start + _START_OFFSET
+ mtspr IVOR15,r4 /* 15: Debug */
+#endif
/* Clear and set up some registers. */
li r0,0x0000
mtspr HID1,r0
#endif
+#ifdef CONFIG_SYS_FSL_ERRATUM_CPU_A003999
+ mfspr r3,SPRN_HDBCR1
+ oris r3,r3,0x0100
+ mtspr SPRN_HDBCR1,r3
+#endif
+
/* Enable Branch Prediction */
#if defined(CONFIG_BTB)
lis r0,BUCSR_ENABLE@h
*/
/* create a temp mapping TLB0[0] for LBCR */
- lis r6,FSL_BOOKE_MAS0(0, 0, 0)@h
- ori r6,r6,FSL_BOOKE_MAS0(0, 0, 0)@l
-
- lis r7,FSL_BOOKE_MAS1(1, 0, 0, 0, BOOKE_PAGESZ_4K)@h
- ori r7,r7,FSL_BOOKE_MAS1(1, 0, 0, 0, BOOKE_PAGESZ_4K)@l
-
- lis r8,FSL_BOOKE_MAS2(CONFIG_SYS_LBC_ADDR, MAS2_I|MAS2_G)@h
- ori r8,r8,FSL_BOOKE_MAS2(CONFIG_SYS_LBC_ADDR, MAS2_I|MAS2_G)@l
-
- lis r9,FSL_BOOKE_MAS3(CONFIG_SYS_LBC_ADDR, 0,
- (MAS3_SX|MAS3_SW|MAS3_SR))@h
- ori r9,r9,FSL_BOOKE_MAS3(CONFIG_SYS_LBC_ADDR, 0,
- (MAS3_SX|MAS3_SW|MAS3_SR))@l
-
- mtspr MAS0,r6
- mtspr MAS1,r7
- mtspr MAS2,r8
- mtspr MAS3,r9
- isync
- msync
- tlbwe
+ create_tlb0_entry 0, \
+ 0, BOOKE_PAGESZ_4K, \
+ CONFIG_SYS_LBC_ADDR, MAS2_I|MAS2_G, \
+ CONFIG_SYS_LBC_ADDR, MAS3_SW|MAS3_SR, \
+ 0, r6
/* Set LBCR register */
lis r4,CONFIG_SYS_LBCR_ADDR@h
#endif /* CONFIG_MPC8569 */
- lis r6,FSL_BOOKE_MAS0(1, 15, 0)@h
- ori r6,r6,FSL_BOOKE_MAS0(1, 15, 0)@l
+/*
+ * Search for the TLB that covers the code we're executing, and shrink it
+ * so that it covers only this 4K page. That will ensure that any other
+ * TLB we create won't interfere with it. We assume that the TLB exists,
+ * which is why we don't check the Valid bit of MAS1. We also assume
+ * it is in TLB1.
+ *
+ * This is necessary, for example, when booting from the on-chip ROM,
+ * which (oddly) creates a single 4GB TLB that covers CCSR and DDR.
+ */
+ bl nexti /* Find our address */
+nexti: mflr r1 /* R1 = our PC */
+ li r2, 0
+ mtspr MAS6, r2 /* Assume the current PID and AS are 0 */
+ isync
+ msync
+ tlbsx 0, r1 /* This must succeed */
-#ifndef CONFIG_SYS_RAMBOOT
- /* create a temp mapping in AS=1 to the 4M boot window */
- lis r7,FSL_BOOKE_MAS1(1, 1, 0, 1, BOOKE_PAGESZ_4M)@h
- ori r7,r7,FSL_BOOKE_MAS1(1, 1, 0, 1, BOOKE_PAGESZ_4M)@l
+ mfspr r14, MAS0 /* Save ESEL for later */
+ rlwinm r14, r14, 16, 0xfff
+
+ /* Set the size of the TLB to 4KB */
+ mfspr r3, MAS1
+ li r2, 0xF80
+ andc r3, r3, r2 /* Clear the TSIZE bits */
+ ori r3, r3, MAS1_TSIZE(BOOKE_PAGESZ_4K)@l
+ oris r3, r3, MAS1_IPROT@h
+ mtspr MAS1, r3
+
+ /*
+ * Set the base address of the TLB to our PC. We assume that
+ * virtual == physical. We also assume that MAS2_EPN == MAS3_RPN.
+ */
+ lis r3, MAS2_EPN@h
+ ori r3, r3, MAS2_EPN@l /* R3 = MAS2_EPN */
+
+ and r1, r1, r3 /* Our PC, rounded down to the nearest page */
+
+ mfspr r2, MAS2
+ andc r2, r2, r3
+ or r2, r2, r1
+#ifdef CONFIG_SYS_FSL_ERRATUM_A004510
+ cmpwi r27,0
+ beq 1f
+ andi. r15, r2, MAS2_I|MAS2_G /* save the old I/G for later */
+ rlwinm r2, r2, 0, ~MAS2_I
+ ori r2, r2, MAS2_G
+1:
+#endif
+ mtspr MAS2, r2 /* Set the EPN to our PC base address */
+
+ mfspr r2, MAS3
+ andc r2, r2, r3
+ or r2, r2, r1
+ mtspr MAS3, r2 /* Set the RPN to our PC base address */
+
+ isync
+ msync
+ tlbwe
+
+/*
+ * Clear out any other TLB entries that may exist, to avoid conflicts.
+ * Our TLB entry is in r14.
+ */
+ li r0, TLBIVAX_ALL | TLBIVAX_TLB0
+ tlbivax 0, r0
+ tlbsync
- lis r8,FSL_BOOKE_MAS2(CONFIG_SYS_MONITOR_BASE & 0xffc00000, (MAS2_I|MAS2_G))@h
- ori r8,r8,FSL_BOOKE_MAS2(CONFIG_SYS_MONITOR_BASE & 0xffc00000, (MAS2_I|MAS2_G))@l
+ mfspr r4, SPRN_TLB1CFG
+ rlwinm r4, r4, 0, TLBnCFG_NENTRY_MASK
- /* The 85xx has the default boot window 0xff800000 - 0xffffffff */
- lis r9,FSL_BOOKE_MAS3(0xffc00000, 0, (MAS3_SX|MAS3_SW|MAS3_SR))@h
- ori r9,r9,FSL_BOOKE_MAS3(0xffc00000, 0, (MAS3_SX|MAS3_SW|MAS3_SR))@l
+ li r3, 0
+ mtspr MAS1, r3
+1: cmpw r3, r14
+ rlwinm r5, r3, 16, MAS0_ESEL_MSK
+ addi r3, r3, 1
+ beq 2f /* skip the entry we're executing from */
+
+ oris r5, r5, MAS0_TLBSEL(1)@h
+ mtspr MAS0, r5
+
+ isync
+ tlbwe
+ isync
+ msync
+
+2: cmpw r3, r4
+ blt 1b
+
+#if defined(CONFIG_SYS_PPC_E500_DEBUG_TLB) && !defined(MINIMAL_SPL)
+/*
+ * TLB entry for debuggging in AS1
+ * Create temporary TLB entry in AS0 to handle debug exception
+ * As on debug exception MSR is cleared i.e. Address space is changed
+ * to 0. A TLB entry (in AS0) is required to handle debug exception generated
+ * in AS1.
+ */
+
+#ifdef NOR_BOOT
+/*
+ * TLB entry is created for IVPR + IVOR15 to map on valid OP code address
+ * bacause flash's virtual address maps to 0xff800000 - 0xffffffff.
+ * and this window is outside of 4K boot window.
+ */
+ create_tlb1_entry CONFIG_SYS_PPC_E500_DEBUG_TLB, \
+ 0, BOOKE_PAGESZ_4M, \
+ CONFIG_SYS_MONITOR_BASE & 0xffc00000, MAS2_I|MAS2_G, \
+ 0xffc00000, MAS3_SX|MAS3_SW|MAS3_SR, \
+ 0, r6
+
+#elif !defined(CONFIG_SYS_RAMBOOT) && defined(CONFIG_SECURE_BOOT)
+ create_tlb1_entry CONFIG_SYS_PPC_E500_DEBUG_TLB, \
+ 0, BOOKE_PAGESZ_1M, \
+ CONFIG_SYS_MONITOR_BASE, MAS2_I|MAS2_G, \
+ CONFIG_SYS_PBI_FLASH_WINDOW, MAS3_SX|MAS3_SW|MAS3_SR, \
+ 0, r6
#else
+/*
+ * TLB entry is created for IVPR + IVOR15 to map on valid OP code address
+ * because "nexti" will resize TLB to 4K
+ */
+ create_tlb1_entry CONFIG_SYS_PPC_E500_DEBUG_TLB, \
+ 0, BOOKE_PAGESZ_256K, \
+ CONFIG_SYS_MONITOR_BASE & 0xfffc0000, MAS2_I, \
+ CONFIG_SYS_MONITOR_BASE & 0xfffc0000, MAS3_SX|MAS3_SW|MAS3_SR, \
+ 0, r6
+#endif
+#endif
+
+/*
+ * Relocate CCSR, if necessary. We relocate CCSR if (obviously) the default
+ * location is not where we want it. This typically happens on a 36-bit
+ * system, where we want to move CCSR to near the top of 36-bit address space.
+ *
+ * To move CCSR, we create two temporary TLBs, one for the old location, and
+ * another for the new location. On CoreNet systems, we also need to create
+ * a special, temporary LAW.
+ *
+ * As a general rule, TLB0 is used for short-term TLBs, and TLB1 is used for
+ * long-term TLBs, so we use TLB0 here.
+ */
+#if (CONFIG_SYS_CCSRBAR_DEFAULT != CONFIG_SYS_CCSRBAR_PHYS)
+
+#if !defined(CONFIG_SYS_CCSRBAR_PHYS_HIGH) || !defined(CONFIG_SYS_CCSRBAR_PHYS_LOW)
+#error "CONFIG_SYS_CCSRBAR_PHYS_HIGH and CONFIG_SYS_CCSRBAR_PHYS_LOW) must be defined."
+#endif
+
+create_ccsr_new_tlb:
/*
- * create a temp mapping in AS=1 to the 1M CONFIG_SYS_MONITOR_BASE space, the main
- * image has been relocated to CONFIG_SYS_MONITOR_BASE on the second stage.
+ * Create a TLB for the new location of CCSR. Register R8 is reserved
+ * for the virtual address of this TLB (CONFIG_SYS_CCSRBAR).
+ */
+ lis r8, CONFIG_SYS_CCSRBAR@h
+ ori r8, r8, CONFIG_SYS_CCSRBAR@l
+ lis r9, (CONFIG_SYS_CCSRBAR + 0x1000)@h
+ ori r9, r9, (CONFIG_SYS_CCSRBAR + 0x1000)@l
+ create_tlb0_entry 0, \
+ 0, BOOKE_PAGESZ_4K, \
+ CONFIG_SYS_CCSRBAR, MAS2_I|MAS2_G, \
+ CONFIG_SYS_CCSRBAR_PHYS_LOW, MAS3_SW|MAS3_SR, \
+ CONFIG_SYS_CCSRBAR_PHYS_HIGH, r3
+ /*
+ * Create a TLB for the current location of CCSR. Register R9 is reserved
+ * for the virtual address of this TLB (CONFIG_SYS_CCSRBAR + 0x1000).
*/
- lis r7,FSL_BOOKE_MAS1(1, 1, 0, 1, BOOKE_PAGESZ_1M)@h
- ori r7,r7,FSL_BOOKE_MAS1(1, 1, 0, 1, BOOKE_PAGESZ_1M)@l
+create_ccsr_old_tlb:
+ create_tlb0_entry 1, \
+ 0, BOOKE_PAGESZ_4K, \
+ CONFIG_SYS_CCSRBAR + 0x1000, MAS2_I|MAS2_G, \
+ CONFIG_SYS_CCSRBAR_DEFAULT, MAS3_SW|MAS3_SR, \
+ 0, r3 /* The default CCSR address is always a 32-bit number */
- lis r8,FSL_BOOKE_MAS2(CONFIG_SYS_MONITOR_BASE, (MAS2_I|MAS2_G))@h
- ori r8,r8,FSL_BOOKE_MAS2(CONFIG_SYS_MONITOR_BASE, (MAS2_I|MAS2_G))@l
- lis r9,FSL_BOOKE_MAS3(CONFIG_SYS_MONITOR_BASE, 0, (MAS3_SX|MAS3_SW|MAS3_SR))@h
- ori r9,r9,FSL_BOOKE_MAS3(CONFIG_SYS_MONITOR_BASE, 0, (MAS3_SX|MAS3_SW|MAS3_SR))@l
+ /*
+ * We have a TLB for what we think is the current (old) CCSR. Let's
+ * verify that, otherwise we won't be able to move it.
+ * CONFIG_SYS_CCSRBAR_DEFAULT is always a 32-bit number, so we only
+ * need to compare the lower 32 bits of CCSRBAR on CoreNet systems.
+ */
+verify_old_ccsr:
+ lis r0, CONFIG_SYS_CCSRBAR_DEFAULT@h
+ ori r0, r0, CONFIG_SYS_CCSRBAR_DEFAULT@l
+#ifdef CONFIG_FSL_CORENET
+ lwz r1, 4(r9) /* CCSRBARL */
+#else
+ lwz r1, 0(r9) /* CCSRBAR, shifted right by 12 */
+ slwi r1, r1, 12
#endif
- mtspr MAS0,r6
- mtspr MAS1,r7
- mtspr MAS2,r8
- mtspr MAS3,r9
+ cmpl 0, r0, r1
+
+ /*
+ * If the value we read from CCSRBARL is not what we expect, then
+ * enter an infinite loop. This will at least allow a debugger to
+ * halt execution and examine TLBs, etc. There's no point in going
+ * on.
+ */
+infinite_debug_loop:
+ bne infinite_debug_loop
+
+#ifdef CONFIG_FSL_CORENET
+
+#define CCSR_LAWBARH0 (CONFIG_SYS_CCSRBAR + 0x1000)
+#define LAW_EN 0x80000000
+#define LAW_SIZE_4K 0xb
+#define CCSRBAR_LAWAR (LAW_EN | (0x1e << 20) | LAW_SIZE_4K)
+#define CCSRAR_C 0x80000000 /* Commit */
+
+create_temp_law:
+ /*
+ * On CoreNet systems, we create the temporary LAW using a special LAW
+ * target ID of 0x1e. LAWBARH is at offset 0xc00 in CCSR.
+ */
+ lis r0, CONFIG_SYS_CCSRBAR_PHYS_HIGH@h
+ ori r0, r0, CONFIG_SYS_CCSRBAR_PHYS_HIGH@l
+ lis r1, CONFIG_SYS_CCSRBAR_PHYS_LOW@h
+ ori r1, r1, CONFIG_SYS_CCSRBAR_PHYS_LOW@l
+ lis r2, CCSRBAR_LAWAR@h
+ ori r2, r2, CCSRBAR_LAWAR@l
+
+ stw r0, 0xc00(r9) /* LAWBARH0 */
+ stw r1, 0xc04(r9) /* LAWBARL0 */
+ sync
+ stw r2, 0xc08(r9) /* LAWAR0 */
+
+ /*
+ * Read back from LAWAR to ensure the update is complete. e500mc
+ * cores also require an isync.
+ */
+ lwz r0, 0xc08(r9) /* LAWAR0 */
+ isync
+
+ /*
+ * Read the current CCSRBARH and CCSRBARL using load word instructions.
+ * Follow this with an isync instruction. This forces any outstanding
+ * accesses to configuration space to completion.
+ */
+read_old_ccsrbar:
+ lwz r0, 0(r9) /* CCSRBARH */
+ lwz r0, 4(r9) /* CCSRBARL */
+ isync
+
+ /*
+ * Write the new values for CCSRBARH and CCSRBARL to their old
+ * locations. The CCSRBARH has a shadow register. When the CCSRBARH
+ * has a new value written it loads a CCSRBARH shadow register. When
+ * the CCSRBARL is written, the CCSRBARH shadow register contents
+ * along with the CCSRBARL value are loaded into the CCSRBARH and
+ * CCSRBARL registers, respectively. Follow this with a sync
+ * instruction.
+ */
+write_new_ccsrbar:
+ lis r0, CONFIG_SYS_CCSRBAR_PHYS_HIGH@h
+ ori r0, r0, CONFIG_SYS_CCSRBAR_PHYS_HIGH@l
+ lis r1, CONFIG_SYS_CCSRBAR_PHYS_LOW@h
+ ori r1, r1, CONFIG_SYS_CCSRBAR_PHYS_LOW@l
+ lis r2, CCSRAR_C@h
+ ori r2, r2, CCSRAR_C@l
+
+ stw r0, 0(r9) /* Write to CCSRBARH */
+ sync /* Make sure we write to CCSRBARH first */
+ stw r1, 4(r9) /* Write to CCSRBARL */
+ sync
+
+ /*
+ * Write a 1 to the commit bit (C) of CCSRAR at the old location.
+ * Follow this with a sync instruction.
+ */
+ stw r2, 8(r9)
+ sync
+
+ /* Delete the temporary LAW */
+delete_temp_law:
+ li r1, 0
+ stw r1, 0xc08(r8)
+ sync
+ stw r1, 0xc00(r8)
+ stw r1, 0xc04(r8)
+ sync
+
+#else /* #ifdef CONFIG_FSL_CORENET */
+
+write_new_ccsrbar:
+ /*
+ * Read the current value of CCSRBAR using a load word instruction
+ * followed by an isync. This forces all accesses to configuration
+ * space to complete.
+ */
+ sync
+ lwz r0, 0(r9)
+ isync
+
+/* CONFIG_SYS_CCSRBAR_PHYS right shifted by 12 */
+#define CCSRBAR_PHYS_RS12 ((CONFIG_SYS_CCSRBAR_PHYS_HIGH << 20) | \
+ (CONFIG_SYS_CCSRBAR_PHYS_LOW >> 12))
+
+ /* Write the new value to CCSRBAR. */
+ lis r0, CCSRBAR_PHYS_RS12@h
+ ori r0, r0, CCSRBAR_PHYS_RS12@l
+ stw r0, 0(r9)
+ sync
+
+ /*
+ * The manual says to perform a load of an address that does not
+ * access configuration space or the on-chip SRAM using an existing TLB,
+ * but that doesn't appear to be necessary. We will do the isync,
+ * though.
+ */
+ isync
+
+ /*
+ * Read the contents of CCSRBAR from its new location, followed by
+ * another isync.
+ */
+ lwz r0, 0(r8)
+ isync
+
+#endif /* #ifdef CONFIG_FSL_CORENET */
+
+ /* Delete the temporary TLBs */
+delete_temp_tlbs:
+ delete_tlb0_entry 0, CONFIG_SYS_CCSRBAR, MAS2_I|MAS2_G, r3
+ delete_tlb0_entry 1, CONFIG_SYS_CCSRBAR + 0x1000, MAS2_I|MAS2_G, r3
+
+#endif /* #if (CONFIG_SYS_CCSRBAR_DEFAULT != CONFIG_SYS_CCSRBAR_PHYS) */
+
+#ifdef CONFIG_SYS_FSL_QORIQ_CHASSIS2
+create_ccsr_l2_tlb:
+ /*
+ * Create a TLB for the MMR location of CCSR
+ * to access L2CSR0 register
+ */
+ create_tlb0_entry 0, \
+ 0, BOOKE_PAGESZ_4K, \
+ CONFIG_SYS_CCSRBAR + 0xC20000, MAS2_I|MAS2_G, \
+ CONFIG_SYS_CCSRBAR_PHYS_LOW + 0xC20000, MAS3_SW|MAS3_SR, \
+ CONFIG_SYS_CCSRBAR_PHYS_HIGH, r3
+
+enable_l2_cluster_l2:
+ /* enable L2 cache */
+ lis r3, (CONFIG_SYS_CCSRBAR + 0xC20000)@h
+ ori r3, r3, (CONFIG_SYS_CCSRBAR + 0xC20000)@l
+ li r4, 33 /* stash id */
+ stw r4, 4(r3)
+ lis r4, (L2CSR0_L2FI|L2CSR0_L2LFC)@h
+ ori r4, r4, (L2CSR0_L2FI|L2CSR0_L2LFC)@l
+ sync
+ stw r4, 0(r3) /* invalidate L2 */
+1: sync
+ lwz r0, 0(r3)
+ twi 0, r0, 0
+ isync
+ and. r1, r0, r4
+ bne 1b
+ lis r4, (L2CSR0_L2E|L2CSR0_L2PE)@h
+ ori r4, r4, (L2CSR0_L2REP_MODE)@l
+ sync
+ stw r4, 0(r3) /* enable L2 */
+delete_ccsr_l2_tlb:
+ delete_tlb0_entry 0, CONFIG_SYS_CCSRBAR + 0xC20000, MAS2_I|MAS2_G, r3
+#endif
+
+ /*
+ * Enable the L1. On e6500, this has to be done
+ * after the L2 is up.
+ */
+
+#ifdef CONFIG_SYS_CACHE_STASHING
+ /* set stash id to (coreID) * 2 + 32 + L1 CT (0) */
+ li r2,(32 + 0)
+ mtspr L1CSR2,r2
+#endif
+
+ /* Enable/invalidate the I-Cache */
+ lis r2,(L1CSR1_ICFI|L1CSR1_ICLFR)@h
+ ori r2,r2,(L1CSR1_ICFI|L1CSR1_ICLFR)@l
+ mtspr SPRN_L1CSR1,r2
+1:
+ mfspr r3,SPRN_L1CSR1
+ and. r1,r3,r2
+ bne 1b
+
+ lis r3,(L1CSR1_CPE|L1CSR1_ICE)@h
+ ori r3,r3,(L1CSR1_CPE|L1CSR1_ICE)@l
+ mtspr SPRN_L1CSR1,r3
+ isync
+2:
+ mfspr r3,SPRN_L1CSR1
+ andi. r1,r3,L1CSR1_ICE@l
+ beq 2b
+
+ /* Enable/invalidate the D-Cache */
+ lis r2,(L1CSR0_DCFI|L1CSR0_DCLFR)@h
+ ori r2,r2,(L1CSR0_DCFI|L1CSR0_DCLFR)@l
+ mtspr SPRN_L1CSR0,r2
+1:
+ mfspr r3,SPRN_L1CSR0
+ and. r1,r3,r2
+ bne 1b
+
+ lis r3,(L1CSR0_CPE|L1CSR0_DCE)@h
+ ori r3,r3,(L1CSR0_CPE|L1CSR0_DCE)@l
+ mtspr SPRN_L1CSR0,r3
+ isync
+2:
+ mfspr r3,SPRN_L1CSR0
+ andi. r1,r3,L1CSR0_DCE@l
+ beq 2b
+#ifdef CONFIG_SYS_FSL_ERRATUM_A004510
+#define DCSR_LAWBARH0 (CONFIG_SYS_CCSRBAR + 0x1000)
+#define LAW_SIZE_1M 0x13
+#define DCSRBAR_LAWAR (LAW_EN | (0x1d << 20) | LAW_SIZE_1M)
+
+ cmpwi r27,0
+ beq 9f
+
+ /*
+ * Create a TLB entry for CCSR
+ *
+ * We're executing out of TLB1 entry in r14, and that's the only
+ * TLB entry that exists. To allocate some TLB entries for our
+ * own use, flip a bit high enough that we won't flip it again
+ * via incrementing.
+ */
+
+ xori r8, r14, 32
+ lis r0, MAS0_TLBSEL(1)@h
+ rlwimi r0, r8, 16, MAS0_ESEL_MSK
+ lis r1, FSL_BOOKE_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_16M)@h
+ ori r1, r1, FSL_BOOKE_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_16M)@l
+ lis r7, CONFIG_SYS_CCSRBAR@h
+ ori r7, r7, CONFIG_SYS_CCSRBAR@l
+ ori r2, r7, MAS2_I|MAS2_G
+ lis r3, FSL_BOOKE_MAS3(CONFIG_SYS_CCSRBAR_PHYS_LOW, 0, (MAS3_SW|MAS3_SR))@h
+ ori r3, r3, FSL_BOOKE_MAS3(CONFIG_SYS_CCSRBAR_PHYS_LOW, 0, (MAS3_SW|MAS3_SR))@l
+ lis r4, CONFIG_SYS_CCSRBAR_PHYS_HIGH@h
+ ori r4, r4, CONFIG_SYS_CCSRBAR_PHYS_HIGH@l
+ mtspr MAS0, r0
+ mtspr MAS1, r1
+ mtspr MAS2, r2
+ mtspr MAS3, r3
+ mtspr MAS7, r4
+ isync
+ tlbwe
isync
msync
+
+ /* Map DCSR temporarily to physical address zero */
+ li r0, 0
+ lis r3, DCSRBAR_LAWAR@h
+ ori r3, r3, DCSRBAR_LAWAR@l
+
+ stw r0, 0xc00(r7) /* LAWBARH0 */
+ stw r0, 0xc04(r7) /* LAWBARL0 */
+ sync
+ stw r3, 0xc08(r7) /* LAWAR0 */
+
+ /* Read back from LAWAR to ensure the update is complete. */
+ lwz r3, 0xc08(r7) /* LAWAR0 */
+ isync
+
+ /* Create a TLB entry for DCSR at zero */
+
+ addi r9, r8, 1
+ lis r0, MAS0_TLBSEL(1)@h
+ rlwimi r0, r9, 16, MAS0_ESEL_MSK
+ lis r1, FSL_BOOKE_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_1M)@h
+ ori r1, r1, FSL_BOOKE_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_1M)@l
+ li r6, 0 /* DCSR effective address */
+ ori r2, r6, MAS2_I|MAS2_G
+ li r3, MAS3_SW|MAS3_SR
+ li r4, 0
+ mtspr MAS0, r0
+ mtspr MAS1, r1
+ mtspr MAS2, r2
+ mtspr MAS3, r3
+ mtspr MAS7, r4
+ isync
tlbwe
+ isync
+ msync
- /* create a temp mapping in AS=1 to the stack */
- lis r6,FSL_BOOKE_MAS0(1, 14, 0)@h
- ori r6,r6,FSL_BOOKE_MAS0(1, 14, 0)@l
+ /* enable the timebase */
+#define CTBENR 0xe2084
+ li r3, 1
+ addis r4, r7, CTBENR@ha
+ stw r3, CTBENR@l(r4)
+ lwz r3, CTBENR@l(r4)
+ twi 0,r3,0
+ isync
- lis r7,FSL_BOOKE_MAS1(1, 1, 0, 1, BOOKE_PAGESZ_16K)@h
- ori r7,r7,FSL_BOOKE_MAS1(1, 1, 0, 1, BOOKE_PAGESZ_16K)@l
+ .macro erratum_set_ccsr offset value
+ addis r3, r7, \offset@ha
+ lis r4, \value@h
+ addi r3, r3, \offset@l
+ ori r4, r4, \value@l
+ bl erratum_set_value
+ .endm
+
+ .macro erratum_set_dcsr offset value
+ addis r3, r6, \offset@ha
+ lis r4, \value@h
+ addi r3, r3, \offset@l
+ ori r4, r4, \value@l
+ bl erratum_set_value
+ .endm
+
+ erratum_set_dcsr 0xb0e08 0xe0201800
+ erratum_set_dcsr 0xb0e18 0xe0201800
+ erratum_set_dcsr 0xb0e38 0xe0400000
+ erratum_set_dcsr 0xb0008 0x00900000
+ erratum_set_dcsr 0xb0e40 0xe00a0000
+ erratum_set_ccsr 0x18600 CONFIG_SYS_FSL_CORENET_SNOOPVEC_COREONLY
+ erratum_set_ccsr 0x10f00 0x415e5000
+ erratum_set_ccsr 0x11f00 0x415e5000
+
+ /* Make temp mapping uncacheable again, if it was initially */
+ bl 2f
+2: mflr r3
+ tlbsx 0, r3
+ mfspr r4, MAS2
+ rlwimi r4, r15, 0, MAS2_I
+ rlwimi r4, r15, 0, MAS2_G
+ mtspr MAS2, r4
+ isync
+ tlbwe
+ isync
+ msync
- lis r8,FSL_BOOKE_MAS2(CONFIG_SYS_INIT_RAM_ADDR, 0)@h
- ori r8,r8,FSL_BOOKE_MAS2(CONFIG_SYS_INIT_RAM_ADDR, 0)@l
+ /* Clear the cache */
+ lis r3,(L1CSR1_ICFI|L1CSR1_ICLFR)@h
+ ori r3,r3,(L1CSR1_ICFI|L1CSR1_ICLFR)@l
+ sync
+ isync
+ mtspr SPRN_L1CSR1,r3
+ isync
+2: sync
+ mfspr r4,SPRN_L1CSR1
+ and. r4,r4,r3
+ bne 2b
-#if defined(CONFIG_SYS_INIT_RAM_ADDR_PHYS_LOW) && \
- defined(CONFIG_SYS_INIT_RAM_ADDR_PHYS_HIGH)
- lis r9,FSL_BOOKE_MAS3(CONFIG_SYS_INIT_RAM_ADDR_PHYS_LOW, 0,
- (MAS3_SX|MAS3_SW|MAS3_SR))@h
- ori r9,r9,FSL_BOOKE_MAS3(CONFIG_SYS_INIT_RAM_ADDR_PHYS_LOW, 0,
- (MAS3_SX|MAS3_SW|MAS3_SR))@l
- li r10,CONFIG_SYS_INIT_RAM_ADDR_PHYS_HIGH
- mtspr MAS7,r10
-#else
- lis r9,FSL_BOOKE_MAS3(CONFIG_SYS_INIT_RAM_ADDR, 0, (MAS3_SX|MAS3_SW|MAS3_SR))@h
- ori r9,r9,FSL_BOOKE_MAS3(CONFIG_SYS_INIT_RAM_ADDR, 0, (MAS3_SX|MAS3_SW|MAS3_SR))@l
-#endif
+ lis r3,(L1CSR1_CPE|L1CSR1_ICE)@h
+ ori r3,r3,(L1CSR1_CPE|L1CSR1_ICE)@l
+ sync
+ isync
+ mtspr SPRN_L1CSR1,r3
+ isync
+2: sync
+ mfspr r4,SPRN_L1CSR1
+ and. r4,r4,r3
+ beq 2b
- mtspr MAS0,r6
- mtspr MAS1,r7
- mtspr MAS2,r8
- mtspr MAS3,r9
+ /* Remove temporary mappings */
+ lis r0, MAS0_TLBSEL(1)@h
+ rlwimi r0, r9, 16, MAS0_ESEL_MSK
+ li r3, 0
+ mtspr MAS0, r0
+ mtspr MAS1, r3
+ isync
+ tlbwe
isync
msync
+
+ li r3, 0
+ stw r3, 0xc08(r7) /* LAWAR0 */
+ lwz r3, 0xc08(r7)
+ isync
+
+ lis r0, MAS0_TLBSEL(1)@h
+ rlwimi r0, r8, 16, MAS0_ESEL_MSK
+ li r3, 0
+ mtspr MAS0, r0
+ mtspr MAS1, r3
+ isync
tlbwe
+ isync
+ msync
- lis r6,MSR_IS|MSR_DS@h
- ori r6,r6,MSR_IS|MSR_DS@l
+ b 9f
+
+ /* r3 = addr, r4 = value, clobbers r5, r11, r12 */
+erratum_set_value:
+ /* Lock two cache lines into I-Cache */
+ sync
+ mfspr r11, SPRN_L1CSR1
+ rlwinm r11, r11, 0, ~L1CSR1_ICUL
+ sync
+ isync
+ mtspr SPRN_L1CSR1, r11
+ isync
+
+ mflr r12
+ bl 5f
+5: mflr r5
+ addi r5, r5, 2f - 5b
+ icbtls 0, 0, r5
+ addi r5, r5, 64
+
+ sync
+ mfspr r11, SPRN_L1CSR1
+3: andi. r11, r11, L1CSR1_ICUL
+ bne 3b
+
+ icbtls 0, 0, r5
+ addi r5, r5, 64
+
+ sync
+ mfspr r11, SPRN_L1CSR1
+3: andi. r11, r11, L1CSR1_ICUL
+ bne 3b
+
+ b 2f
+ .align 6
+ /* Inside a locked cacheline, wait a while, write, then wait a while */
+2: sync
+
+ mfspr r5, SPRN_TBRL
+ addis r11, r5, 0x10000@h /* wait 65536 timebase ticks */
+4: mfspr r5, SPRN_TBRL
+ subf. r5, r5, r11
+ bgt 4b
+
+ stw r4, 0(r3)
+
+ mfspr r5, SPRN_TBRL
+ addis r11, r5, 0x10000@h /* wait 65536 timebase ticks */
+4: mfspr r5, SPRN_TBRL
+ subf. r5, r5, r11
+ bgt 4b
+
+ sync
+
+ /*
+ * Fill out the rest of this cache line and the next with nops,
+ * to ensure that nothing outside the locked area will be
+ * fetched due to a branch.
+ */
+ .rept 19
+ nop
+ .endr
+
+ sync
+ mfspr r11, SPRN_L1CSR1
+ rlwinm r11, r11, 0, ~L1CSR1_ICUL
+ sync
+ isync
+ mtspr SPRN_L1CSR1, r11
+ isync
+
+ mtlr r12
+ blr
+
+9:
+#endif
+
+create_init_ram_area:
+ lis r6,FSL_BOOKE_MAS0(1, 15, 0)@h
+ ori r6,r6,FSL_BOOKE_MAS0(1, 15, 0)@l
+
+#ifdef NOR_BOOT
+ /* create a temp mapping in AS=1 to the 4M boot window */
+ create_tlb1_entry 15, \
+ 1, BOOKE_PAGESZ_4M, \
+ CONFIG_SYS_MONITOR_BASE & 0xffc00000, MAS2_I|MAS2_G, \
+ 0xffc00000, MAS3_SX|MAS3_SW|MAS3_SR, \
+ 0, r6
+
+#elif !defined(CONFIG_SYS_RAMBOOT) && defined(CONFIG_SECURE_BOOT)
+ /* create a temp mapping in AS = 1 for Flash mapping
+ * created by PBL for ISBC code
+ */
+ create_tlb1_entry 15, \
+ 1, BOOKE_PAGESZ_1M, \
+ CONFIG_SYS_MONITOR_BASE & 0xfff00000, MAS2_I|MAS2_G, \
+ CONFIG_SYS_PBI_FLASH_WINDOW & 0xfff00000, MAS3_SX|MAS3_SW|MAS3_SR, \
+ 0, r6
+#else
+ /*
+ * create a temp mapping in AS=1 to the 1M CONFIG_SYS_MONITOR_BASE space, the main
+ * image has been relocated to CONFIG_SYS_MONITOR_BASE on the second stage.
+ */
+ create_tlb1_entry 15, \
+ 1, BOOKE_PAGESZ_1M, \
+ CONFIG_SYS_MONITOR_BASE & 0xfff00000, MAS2_I|MAS2_G, \
+ CONFIG_SYS_MONITOR_BASE & 0xfff00000, MAS3_SX|MAS3_SW|MAS3_SR, \
+ 0, r6
+#endif
+
+ /* create a temp mapping in AS=1 to the stack */
+#if defined(CONFIG_SYS_INIT_RAM_ADDR_PHYS_LOW) && \
+ defined(CONFIG_SYS_INIT_RAM_ADDR_PHYS_HIGH)
+ create_tlb1_entry 14, \
+ 1, BOOKE_PAGESZ_16K, \
+ CONFIG_SYS_INIT_RAM_ADDR, 0, \
+ CONFIG_SYS_INIT_RAM_ADDR_PHYS_LOW, MAS3_SX|MAS3_SW|MAS3_SR, \
+ CONFIG_SYS_INIT_RAM_ADDR_PHYS_HIGH, r6
+
+#else
+ create_tlb1_entry 14, \
+ 1, BOOKE_PAGESZ_16K, \
+ CONFIG_SYS_INIT_RAM_ADDR, 0, \
+ CONFIG_SYS_INIT_RAM_ADDR, MAS3_SX|MAS3_SW|MAS3_SR, \
+ 0, r6
+#endif
+
+ lis r6,MSR_IS|MSR_DS|MSR_DE@h
+ ori r6,r6,MSR_IS|MSR_DS|MSR_DE@l
lis r7,switch_as@h
ori r7,r7,switch_as@l
bdnz 1b
/* Jump out the last 4K page and continue to 'normal' start */
-#ifdef CONFIG_SYS_RAMBOOT
+#if defined(CONFIG_SYS_RAMBOOT) || defined(CONFIG_SPL)
+ /* We assume that we're already running at the address we're linked at */
b _start_cont
#else
/* Calculate absolute address in FLASH and jump there */
.long 0x27051956 /* U-BOOT Magic Number */
.globl version_string
version_string:
- .ascii U_BOOT_VERSION
- .ascii " (", U_BOOT_DATE, " - ", U_BOOT_TIME, ")"
- .ascii CONFIG_IDENT_STRING, "\0"
+ .ascii U_BOOT_VERSION_STRING, "\0"
.align 4
.globl _start_cont
_start_cont:
/* Setup the stack in initial RAM,could be L2-as-SRAM or L1 dcache*/
- lis r1,CONFIG_SYS_INIT_RAM_ADDR@h
- ori r1,r1,CONFIG_SYS_INIT_SP_OFFSET@l
-
+ lis r3,(CONFIG_SYS_INIT_RAM_ADDR)@h
+ ori r3,r3,((CONFIG_SYS_INIT_SP_OFFSET-16)&~0xf)@l /* Align to 16 */
li r0,0
- stwu r0,-4(r1)
- stwu r0,-4(r1) /* Terminate call chain */
-
- stwu r1,-8(r1) /* Save back chain and move SP */
- lis r0,RESET_VECTOR@h /* Address of reset vector */
- ori r0,r0,RESET_VECTOR@l
- stwu r1,-8(r1) /* Save back chain and move SP */
- stw r0,+12(r1) /* Save return addr (underflow vect) */
+ stw r0,0(r3) /* Terminate Back Chain */
+ stw r0,+4(r3) /* NULL return address. */
+ mr r1,r3 /* Transfer to SP(r1) */
GET_GOT
bl cpu_init_early_f
/* NOTREACHED - board_init_f() does not return */
-#ifndef CONFIG_NAND_SPL
+#ifndef MINIMAL_SPL
. = EXC_OFF_SYS_RESET
.globl _start_of_vectors
_start_of_vectors:
/* Cache functions.
*/
+.globl flush_icache
+flush_icache:
.globl invalidate_icache
invalidate_icache:
mfspr r0,L1CSR1
in32r:
lwbrx r3,r0,r3
blr
-#endif /* !CONFIG_NAND_SPL */
+#endif /* !MINIMAL_SPL */
/*------------------------------------------------------------------------------*/
7: sync /* Wait for all icbi to complete on bus */
isync
- /*
- * Re-point the IVPR at RAM
- */
- mtspr IVPR,r10
-
/*
* We are done. Do not return, instead branch to second part of board
* initialization, now running from RAM.
*/
addi r0,r10,in_ram - _start + _START_OFFSET
+
+ /*
+ * As IVPR is going to point RAM address,
+ * Make sure IVOR15 has valid opcode to support debugger
+ */
+ mtspr IVOR15,r0
+
+ /*
+ * Re-point the IVPR at RAM
+ */
+ mtspr IVPR,r10
+
mtlr r0
blr /* NEVER RETURNS! */
.globl in_ram
* Now clear BSS segment
*/
lwz r3,GOT(__bss_start)
- lwz r4,GOT(__bss_end__)
+ lwz r4,GOT(__bss_end)
cmplw 0,r3,r4
beq 6f
mr r4,r10 /* Destination Address */
bl board_init_r
-#ifndef CONFIG_NAND_SPL
+#ifndef MINIMAL_SPL
/*
* Copy exception vector code to low memory
*
cmplw 0,r7,r8
blt 2b
+ /* Update IVORs as per relocated vector table address */
+ li r7,0x0100
+ mtspr IVOR0,r7 /* 0: Critical input */
+ li r7,0x0200
+ mtspr IVOR1,r7 /* 1: Machine check */
+ li r7,0x0300
+ mtspr IVOR2,r7 /* 2: Data storage */
+ li r7,0x0400
+ mtspr IVOR3,r7 /* 3: Instruction storage */
+ li r7,0x0500
+ mtspr IVOR4,r7 /* 4: External interrupt */
+ li r7,0x0600
+ mtspr IVOR5,r7 /* 5: Alignment */
+ li r7,0x0700
+ mtspr IVOR6,r7 /* 6: Program check */
+ li r7,0x0800
+ mtspr IVOR7,r7 /* 7: floating point unavailable */
+ li r7,0x0900
+ mtspr IVOR8,r7 /* 8: System call */
+ /* 9: Auxiliary processor unavailable(unsupported) */
+ li r7,0x0a00
+ mtspr IVOR10,r7 /* 10: Decrementer */
+ li r7,0x0b00
+ mtspr IVOR11,r7 /* 11: Interval timer */
+ li r7,0x0c00
+ mtspr IVOR12,r7 /* 12: Watchdog timer */
+ li r7,0x0d00
+ mtspr IVOR13,r7 /* 13: Data TLB error */
+ li r7,0x0e00
+ mtspr IVOR14,r7 /* 14: Instruction TLB error */
+ li r7,0x0f00
+ mtspr IVOR15,r7 /* 15: Debug */
+
lis r7,0x0
mtspr IVPR,r7
slwi r4,r4,(10 - 1 - L1_CACHE_SHIFT)
mtctr r4
1: dcbi r0,r3
+ dcblc r0,r3
addi r3,r3,CONFIG_SYS_CACHELINE_SIZE
bdnz 1b
sync
#include "fixed_ivor.S"
blr
-#endif /* !CONFIG_NAND_SPL */
+#endif /* !MINIMAL_SPL */
projects / karo-tx-uboot.git / blobdiff