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-rw-r--r--cpu/mpc85xx/start.S490
1 files changed, 207 insertions, 283 deletions
diff --git a/cpu/mpc85xx/start.S b/cpu/mpc85xx/start.S
index 20c7ebc72..2c98c2ad8 100644
--- a/cpu/mpc85xx/start.S
+++ b/cpu/mpc85xx/start.S
@@ -1,7 +1,6 @@
/*
- * Copyright 2004 Freescale Semiconductor.
+ * Copyright 2004, 2007 Freescale Semiconductor.
* Copyright (C) 2003 Motorola,Inc.
- * Xianghua Xiao<X.Xiao@motorola.com>
*
* See file CREDITS for list of people who contributed to this
* project.
@@ -46,7 +45,7 @@
#endif
#undef MSR_KERNEL
-#define MSR_KERNEL ( MSR_ME ) /* Machine Check */
+#define MSR_KERNEL ( MSR_ME ) /* Machine Check */
/*
* Set up GOT: Global Offset Table
@@ -80,110 +79,37 @@
*
*/
- .section .bootpg,"ax"
- .globl _start_e500
+ .section .bootpg,"ax"
+ .globl _start_e500
_start_e500:
- mfspr r0, PVR
- lis r1, PVR_85xx_REV1@h
- ori r1, r1, PVR_85xx_REV1@l
- cmpw r0, r1
- bne 1f
- /* Semi-bogus errata fixup for Rev 1 */
- li r0,0x2000
- mtspr 977,r0
+/* clear registers/arrays not reset by hardware */
- /*
- * Before invalidating MMU L1/L2, read TLB1 Entry 0 and then
- * write it back immediately to fixup a Rev 1 bug (Errata CPU4)
- * for this initial TLB1 entry 0, otherwise the TLB1 entry 0
- * will be invalidated (incorrectly).
- */
- lis r2,0x1000
- mtspr MAS0,r2
- tlbre
- tlbwe
- isync
-
-1:
- /*
- * Clear and set up some registers.
- * Note: Some registers need strict synchronization by
- * sync/mbar/msync/isync when being "mtspr".
- * BookE: isync before PID,tlbivax,tlbwe
- * BookE: isync after MSR,PID; msync_isync after tlbivax & tlbwe
- * E500: msync,isync before L1CSR0
- * E500: isync after BBEAR,BBTAR,BUCSR,DBCR0,DBCR1,HID0,HID1,
- * L1CSR0, L1CSR1, MAS[0,1,2,3,4,6],MMUCSR0, PID[0,1,2],
- * SPEFCSR
- */
-
- /* invalidate d-cache */
- mfspr r0,L1CSR0
- ori r0,r0,0x0002
- msync
- isync
- mtspr L1CSR0,r0
- isync
-
- /* disable d-cache */
- li r0,0x0
- mtspr L1CSR0,r0
-
- /* invalidate i-cache */
- mfspr r0,L1CSR1
- ori r0,r0,0x0002
- mtspr L1CSR1,r0
- isync
-
- /* disable i-cache */
- li r0,0x0
- mtspr L1CSR1,r0
- isync
-
- /* clear registers */
- li r0,0
- mtspr SRR0,r0
- mtspr SRR1,r0
- mtspr CSRR0,r0
- mtspr CSRR1,r0
- mtspr MCSRR0,r0
- mtspr MCSRR1,r0
-
- mtspr ESR,r0
- mtspr MCSR,r0
- mtspr DEAR,r0
-
- /* not needed and conflicts with some debuggers */
- /* mtspr DBCR0,r0 */
- mtspr DBCR1,r0
- mtspr DBCR2,r0
- /* not needed and conflicts with some debuggers */
- /* mtspr IAC1,r0 */
- /* mtspr IAC2,r0 */
- mtspr DAC1,r0
- mtspr DAC2,r0
+ /* L1 */
+ li r0,2
+ mtspr L1CSR0,r0 /* invalidate d-cache */
+ mtspr L1CSR1,r0 /* invalidate i-cache */
mfspr r1,DBSR
mtspr DBSR,r1 /* Clear all valid bits */
- mtspr PID0,r0
- mtspr PID1,r0
- mtspr PID2,r0
- mtspr TCR,r0
+ /*
+ * Enable L1 Caches early
+ *
+ */
- mtspr BUCSR,r0 /* disable branch prediction */
- mtspr MAS4,r0
- mtspr MAS6,r0
-#if defined(CONFIG_ENABLE_36BIT_PHYS)
- mtspr MAS7,r0
-#endif
+ lis r2,L1CSR0_CPE@H /* enable parity */
+ ori r2,r2,L1CSR0_DCE
+ mtspr L1CSR0,r2 /* enable L1 Dcache */
isync
+ mtspr L1CSR1,r2 /* enable L1 Icache */
+ isync
+ msync
/* Setup interrupt vectors */
lis r1,TEXT_BASE@h
- mtspr IVPR, r1
+ mtspr IVPR,r1
li r1,0x0100
mtspr IVOR0,r1 /* 0: Critical input */
@@ -217,26 +143,6 @@ _start_e500:
li r1,0x0f00
mtspr IVOR15,r1 /* 15: Debug */
- /*
- * Invalidate MMU L1/L2
- *
- * Note: There is a fixup earlier for Errata CPU4 on
- * Rev 1 parts that must precede this MMU invalidation.
- */
- li r2, 0x001e
- mtspr MMUCSR0, r2
- isync
-
- /*
- * Invalidate all TLB0 entries.
- */
- li r3,4
- li r4,0
- tlbivax r4,r3
- /*
- * To avoid REV1 Errata CPU6 issues, make sure
- * the instruction following tlbivax is not a store.
- */
/*
* After reset, CCSRBAR is located at CFG_CCSRBAR_DEFAULT, i.e.
@@ -254,14 +160,14 @@ _start_e500:
lwzu r4,0(r5) /* how many TLB1 entries we actually use */
mtctr r4
-0: lwzu r0,4(r5)
- lwzu r1,4(r5)
- lwzu r2,4(r5)
- lwzu r3,4(r5)
- mtspr MAS0,r0
- mtspr MAS1,r1
- mtspr MAS2,r2
- mtspr MAS3,r3
+0: lwzu r6,4(r5)
+ lwzu r7,4(r5)
+ lwzu r8,4(r5)
+ lwzu r9,4(r5)
+ mtspr MAS0,r6
+ mtspr MAS1,r7
+ mtspr MAS2,r8
+ mtspr MAS3,r9
isync
msync
tlbwe
@@ -271,22 +177,22 @@ _start_e500:
1:
#if (CFG_CCSRBAR_DEFAULT != CFG_CCSRBAR)
/* Special sequence needed to update CCSRBAR itself */
- lis r4, CFG_CCSRBAR_DEFAULT@h
- ori r4, r4, CFG_CCSRBAR_DEFAULT@l
+ lis r4,CFG_CCSRBAR_DEFAULT@h
+ ori r4,r4,CFG_CCSRBAR_DEFAULT@l
- lis r5, CFG_CCSRBAR@h
- ori r5, r5, CFG_CCSRBAR@l
+ lis r5,CFG_CCSRBAR@h
+ ori r5,r5,CFG_CCSRBAR@l
srwi r6,r5,12
- stw r6, 0(r4)
+ stw r6,0(r4)
isync
- lis r5, 0xffff
+ lis r5,0xffff
ori r5,r5,0xf000
- lwz r5, 0(r5)
+ lwz r5,0(r5)
isync
- lis r3, CFG_CCSRBAR@h
- lwz r5, CFG_CCSRBAR@l(r3)
+ lis r3,CFG_CCSRBAR@h
+ lwz r5,CFG_CCSRBAR@l(r3)
isync
#endif
@@ -300,8 +206,8 @@ _start_e500:
lwzu r5,0(r6) /* how many windows we actually use */
mtctr r5
- li r2,0x0c28 /* the first pair is reserved for boot-over-rio-or-pci */
- li r1,0x0c30
+ li r2,0x0c28 /* the first pair is reserved for */
+ li r1,0x0c30 /* boot-over-rio-or-pci */
0: lwzu r4,4(r6)
lwzu r3,4(r6)
@@ -311,31 +217,6 @@ _start_e500:
addi r1,r1,0x0020
bdnz 0b
- /* Jump out the last 4K page and continue to 'normal' start */
-1: bl 3f
- b _start
-
-3: li r0,0
- mtspr SRR1,r0 /* Keep things disabled for now */
- mflr r1
- mtspr SRR0,r1
- rfi
-
-/*
- * r3 - 1st arg to board_init(): IMMP pointer
- * r4 - 2nd arg to board_init(): boot flag
- */
- .text
- .long 0x27051956 /* U-BOOT Magic Number */
- .globl version_string
-version_string:
- .ascii U_BOOT_VERSION
- .ascii " (", __DATE__, " - ", __TIME__, ")"
- .ascii CONFIG_IDENT_STRING, "\0"
-
- . = EXC_OFF_SYS_RESET
- .globl _start
-_start:
/* Clear and set up some registers. */
li r0,0x0000
lis r1,0xffff
@@ -354,17 +235,14 @@ _start:
/* Enable Time Base and Select Time Base Clock */
lis r0,HID0_EMCP@h /* Enable machine check */
- ori r0,r0,0x4000 /* time base is processor clock */
#if defined(CONFIG_ENABLE_36BIT_PHYS)
- ori r0,r0,0x0080 /* enable MAS7 updates */
+ ori r0,r0,(HID0_TBEN|HID0_ENMAS7)@l /* Enable Timebase & MAS7 */
+#else
+ ori r0,r0,HID0_TBEN@l /* enable Timebase */
#endif
mtspr HID0,r0
-#if defined(CONFIG_ADDR_STREAMING)
- li r0,0x3000
-#else
- li r0,0x1000
-#endif
+ li r0,(HID1_ASTME|HID1_ABE)@l /* Addr streaming & broadcast */
mtspr HID1,r0
/* Enable Branch Prediction */
@@ -383,37 +261,53 @@ _start:
#endif
/* L1 DCache is used for initial RAM */
- mfspr r2, L1CSR0
- ori r2, r2, 0x0003
- oris r2, r2, 0x0001
- mtspr L1CSR0, r2 /* enable/invalidate L1 Dcache */
- isync
/* Allocate Initial RAM in data cache.
*/
- lis r3, CFG_INIT_RAM_ADDR@h
- ori r3, r3, CFG_INIT_RAM_ADDR@l
- li r2, 512 /* 512*32=16K */
+ lis r3,CFG_INIT_RAM_ADDR@h
+ ori r3,r3,CFG_INIT_RAM_ADDR@l
+ li r2,512 /* 512*32=16K */
mtctr r2
- li r0, 0
+ li r0,0
1:
- dcbz r0, r3
- dcbtls 0,r0, r3
- addi r3, r3, 32
+ dcbz r0,r3
+ dcbtls 0,r0,r3
+ addi r3,r3,32
bdnz 1b
-#ifndef CFG_RAMBOOT
+ /* Jump out the last 4K page and continue to 'normal' start */
+#ifdef CFG_RAMBOOT
+ bl 3f
+ b _start_cont
+#else
/* Calculate absolute address in FLASH and jump there */
/*--------------------------------------------------------------*/
- lis r3, CFG_MONITOR_BASE@h
- ori r3, r3, CFG_MONITOR_BASE@l
- addi r3, r3, in_flash - _start + EXC_OFF_SYS_RESET
+ lis r3,CFG_MONITOR_BASE@h
+ ori r3,r3,CFG_MONITOR_BASE@l
+ addi r3,r3,_start_cont - _start + _START_OFFSET
mtlr r3
- blr
+#endif
-in_flash:
-#endif /* CFG_RAMBOOT */
+3: li r0,0
+ mtspr SRR1,r0 /* Keep things disabled for now */
+ mflr r1
+ mtspr SRR0,r1
+ rfi
+ isync
+ .text
+ .globl _start
+_start:
+ .long 0x27051956 /* U-BOOT Magic Number */
+ .globl version_string
+version_string:
+ .ascii U_BOOT_VERSION
+ .ascii " (", __DATE__, " - ", __TIME__, ")"
+ .ascii CONFIG_IDENT_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,CFG_INIT_RAM_ADDR@h
ori r1,r1,CFG_INIT_SP_OFFSET@l
@@ -424,26 +318,24 @@ in_flash:
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
+ 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) */
GET_GOT
bl cpu_init_f
- bl icache_enable
bl board_init_f
isync
-/* --FIXME-- machine check with MCSRRn and rfmci */
-
+ . = EXC_OFF_SYS_RESET
.globl _start_of_vectors
_start_of_vectors:
-#if 0
+
/* Critical input. */
- CRIT_EXCEPTION(0x0100, CritcalInput, CritcalInputException)
-#endif
-/* Machine check --FIXME-- Should be MACH_EXCEPTION */
- CRIT_EXCEPTION(0x0200, MachineCheck, MachineCheckException)
+ CRIT_EXCEPTION(0x0100, CriticalInput, CritcalInputException)
+
+/* Machine check */
+ MCK_EXCEPTION(0x200, MachineCheck, MachineCheckException)
/* Data Storage exception. */
STD_EXCEPTION(0x0300, DataStorage, UnknownException)
@@ -452,12 +344,12 @@ _start_of_vectors:
STD_EXCEPTION(0x0400, InstStorage, UnknownException)
/* External Interrupt exception. */
- STD_EXCEPTION(0x0500, ExtInterrupt, UnknownException)
+ STD_EXCEPTION(0x0500, ExtInterrupt, ExtIntException)
/* Alignment exception. */
. = 0x0600
Alignment:
- EXCEPTION_PROLOG
+ EXCEPTION_PROLOG(SRR0, SRR1)
mfspr r4,DAR
stw r4,_DAR(r21)
mfspr r5,DSISR
@@ -469,13 +361,13 @@ Alignment:
mtlr r6
blrl
.L_Alignment:
- .long AlignmentException - _start + EXC_OFF_SYS_RESET
- .long int_return - _start + EXC_OFF_SYS_RESET
+ .long AlignmentException - _start + _START_OFFSET
+ .long int_return - _start + _START_OFFSET
/* Program check exception */
. = 0x0700
ProgramCheck:
- EXCEPTION_PROLOG
+ EXCEPTION_PROLOG(SRR0, SRR1)
addi r3,r1,STACK_FRAME_OVERHEAD
li r20,MSR_KERNEL
rlwimi r20,r23,0,16,16 /* copy EE bit from saved MSR */
@@ -483,8 +375,8 @@ ProgramCheck:
mtlr r6
blrl
.L_ProgramCheck:
- .long ProgramCheckException - _start + EXC_OFF_SYS_RESET
- .long int_return - _start + EXC_OFF_SYS_RESET
+ .long ProgramCheckException - _start + _START_OFFSET
+ .long int_return - _start + _START_OFFSET
/* No FPU on MPC85xx. This exception is not supposed to happen.
*/
@@ -496,23 +388,23 @@ ProgramCheck:
* r3-... arguments
*/
SystemCall:
- addis r11,r0,0 /* get functions table addr */
- ori r11,r11,0 /* Note: this code is patched in trap_init */
- addis r12,r0,0 /* get number of functions */
+ addis r11,r0,0 /* get functions table addr */
+ ori r11,r11,0 /* Note: this code is patched in trap_init */
+ addis r12,r0,0 /* get number of functions */
ori r12,r12,0
- cmplw 0, r0, r12
+ cmplw 0,r0,r12
bge 1f
- rlwinm r0,r0,2,0,31 /* fn_addr = fn_tbl[r0] */
+ rlwinm r0,r0,2,0,31 /* fn_addr = fn_tbl[r0] */
add r11,r11,r0
lwz r11,0(r11)
- li r20,0xd00-4 /* Get stack pointer */
+ li r20,0xd00-4 /* Get stack pointer */
lwz r12,0(r20)
- subi r12,r12,12 /* Adjust stack pointer */
+ subi r12,r12,12 /* Adjust stack pointer */
li r0,0xc00+_end_back-SystemCall
- cmplw 0, r0, r12 /* Check stack overflow */
+ cmplw 0,r0,r12 /* Check stack overflow */
bgt 1f
stw r12,0(r20)
@@ -570,7 +462,7 @@ _end_back:
_end_of_vectors:
- . = 0x2100
+ . = . + (0x100 - ( . & 0xff )) /* align for debug */
/*
* This code finishes saving the registers to the exception frame
@@ -655,26 +547,58 @@ crit_return:
REST_GPR(31, r1)
lwz r2,_NIP(r1) /* Restore environment */
lwz r0,_MSR(r1)
- mtspr 990,r2 /* SRR2 */
- mtspr 991,r0 /* SRR3 */
+ mtspr SPRN_CSRR0,r2
+ mtspr SPRN_CSRR1,r0
lwz r0,GPR0(r1)
lwz r2,GPR2(r1)
lwz r1,GPR1(r1)
SYNC
rfci
+mck_return:
+ mfmsr r28 /* Disable interrupts */
+ li r4,0
+ ori r4,r4,MSR_EE
+ andc r28,r28,r4
+ SYNC /* Some chip revs need this... */
+ mtmsr r28
+ SYNC
+ lwz r2,_CTR(r1)
+ lwz r0,_LINK(r1)
+ mtctr r2
+ mtlr r0
+ lwz r2,_XER(r1)
+ lwz r0,_CCR(r1)
+ mtspr XER,r2
+ mtcrf 0xFF,r0
+ REST_10GPRS(3, r1)
+ REST_10GPRS(13, r1)
+ REST_8GPRS(23, r1)
+ REST_GPR(31, r1)
+ lwz r2,_NIP(r1) /* Restore environment */
+ lwz r0,_MSR(r1)
+ mtspr SPRN_MCSRR0,r2
+ mtspr SPRN_MCSRR1,r0
+ lwz r0,GPR0(r1)
+ lwz r2,GPR2(r1)
+ lwz r1,GPR1(r1)
+ SYNC
+ rfmci
+
/* Cache functions.
*/
invalidate_icache:
mfspr r0,L1CSR1
- ori r0,r0,0x0002
+ ori r0,r0,L1CSR1_ICFI
+ msync
+ isync
mtspr L1CSR1,r0
isync
- blr /* entire I cache */
+ blr /* entire I cache */
invalidate_dcache:
mfspr r0,L1CSR0
- ori r0,r0,0x0002
+ ori r0,r0,L1CSR0_DCFI
msync
isync
mtspr L1CSR0,r0
@@ -697,9 +621,9 @@ icache_enable:
.globl icache_disable
icache_disable:
mfspr r0,L1CSR1
- lis r1,0xfffffffe@h
- ori r1,r1,0xfffffffe@l
- and r0,r0,r1
+ lis r3,0
+ ori r3,r3,L1CSR1_ICE
+ andc r0,r0,r3
mtspr L1CSR1,r0
isync
blr
@@ -707,7 +631,7 @@ icache_disable:
.globl icache_status
icache_status:
mfspr r3,L1CSR1
- andi. r3,r3,1
+ andi. r3,r3,L1CSR1_ICE
blr
.globl dcache_enable
@@ -727,12 +651,10 @@ dcache_enable:
.globl dcache_disable
dcache_disable:
- mfspr r0,L1CSR0
- lis r1,0xfffffffe@h
- ori r1,r1,0xfffffffe@l
- and r0,r0,r1
- msync
- isync
+ mfspr r3,L1CSR0
+ lis r4,0
+ ori r4,r4,L1CSR0_DCE
+ andc r3,r3,r4
mtspr L1CSR0,r0
isync
blr
@@ -740,27 +662,27 @@ dcache_disable:
.globl dcache_status
dcache_status:
mfspr r3,L1CSR0
- andi. r3,r3,1
+ andi. r3,r3,L1CSR0_DCE
blr
.globl get_pir
get_pir:
- mfspr r3, PIR
+ mfspr r3,PIR
blr
.globl get_pvr
get_pvr:
- mfspr r3, PVR
+ mfspr r3,PVR
blr
.globl get_svr
get_svr:
- mfspr r3, SVR
+ mfspr r3,SVR
blr
.globl wr_tcr
wr_tcr:
- mtspr TCR, r3
+ mtspr TCR,r3
blr
/*------------------------------------------------------------------------------- */
@@ -913,16 +835,16 @@ ppcSync:
*/
.globl relocate_code
relocate_code:
- mr r1, r3 /* Set new stack pointer */
- mr r9, r4 /* Save copy of Init Data pointer */
- mr r10, r5 /* Save copy of Destination Address */
+ mr r1,r3 /* Set new stack pointer */
+ mr r9,r4 /* Save copy of Init Data pointer */
+ mr r10,r5 /* Save copy of Destination Address */
- mr r3, r5 /* Destination Address */
- lis r4, CFG_MONITOR_BASE@h /* Source Address */
- ori r4, r4, CFG_MONITOR_BASE@l
+ mr r3,r5 /* Destination Address */
+ lis r4,CFG_MONITOR_BASE@h /* Source Address */
+ ori r4,r4,CFG_MONITOR_BASE@l
lwz r5,GOT(__init_end)
sub r5,r5,r4
- li r6, CFG_CACHELINE_SIZE /* Cache Line Size */
+ li r6,CFG_CACHELINE_SIZE /* Cache Line Size */
/*
* Fix GOT pointer:
@@ -931,12 +853,12 @@ relocate_code:
*
* Offset:
*/
- sub r15, r10, r4
+ sub r15,r10,r4
/* First our own GOT */
- add r14, r14, r15
+ add r14,r14,r15
/* the the one used by the C code */
- add r30, r30, r15
+ add r30,r30,r15
/*
* Now relocate code
@@ -997,10 +919,10 @@ relocate_code:
* initialization, now running from RAM.
*/
- addi r0, r10, in_ram - _start + EXC_OFF_SYS_RESET
+ addi r0,r10,in_ram - _start + _START_OFFSET
mtlr r0
blr /* NEVER RETURNS! */
-
+ .globl in_ram
in_ram:
/*
@@ -1044,19 +966,19 @@ clear_bss:
lwz r3,GOT(__bss_start)
lwz r4,GOT(_end)
- cmplw 0, r3, r4
+ cmplw 0,r3,r4
beq 6f
- li r0, 0
+ li r0,0
5:
- stw r0, 0(r3)
- addi r3, r3, 4
- cmplw 0, r3, r4
+ stw r0,0(r3)
+ addi r3,r3,4
+ cmplw 0,r3,r4
bne 5b
6:
- mr r3, r9 /* Init Data pointer */
- mr r4, r10 /* Destination Address */
+ mr r3,r9 /* Init Data pointer */
+ mr r4,r10 /* Destination Address */
bl board_init_r
/*
@@ -1067,52 +989,54 @@ clear_bss:
*/
.globl trap_init
trap_init:
- lwz r7, GOT(_start)
- lwz r8, GOT(_end_of_vectors)
+ lwz r7,GOT(_start_of_vectors)
+ lwz r8,GOT(_end_of_vectors)
- li r9, 0x100 /* reset vector always at 0x100 */
+ li r9,0x100 /* reset vector always at 0x100 */
- cmplw 0, r7, r8
+ cmplw 0,r7,r8
bgelr /* return if r7>=r8 - just in case */
mflr r4 /* save link register */
1:
- lwz r0, 0(r7)
- stw r0, 0(r9)
- addi r7, r7, 4
- addi r9, r9, 4
- cmplw 0, r7, r8
+ lwz r0,0(r7)
+ stw r0,0(r9)
+ addi r7,r7,4
+ addi r9,r9,4
+ cmplw 0,r7,r8
bne 1b
/*
* relocate `hdlr' and `int_return' entries
*/
- li r7, .L_MachineCheck - _start + EXC_OFF_SYS_RESET
+ li r7,.L_CriticalInput - _start + _START_OFFSET
bl trap_reloc
- li r7, .L_DataStorage - _start + EXC_OFF_SYS_RESET
+ li r7,.L_MachineCheck - _start + _START_OFFSET
bl trap_reloc
- li r7, .L_InstStorage - _start + EXC_OFF_SYS_RESET
+ li r7,.L_DataStorage - _start + _START_OFFSET
bl trap_reloc
- li r7, .L_ExtInterrupt - _start + EXC_OFF_SYS_RESET
+ li r7,.L_InstStorage - _start + _START_OFFSET
bl trap_reloc
- li r7, .L_Alignment - _start + EXC_OFF_SYS_RESET
+ li r7,.L_ExtInterrupt - _start + _START_OFFSET
bl trap_reloc
- li r7, .L_ProgramCheck - _start + EXC_OFF_SYS_RESET
+ li r7,.L_Alignment - _start + _START_OFFSET
bl trap_reloc
- li r7, .L_FPUnavailable - _start + EXC_OFF_SYS_RESET
+ li r7,.L_ProgramCheck - _start + _START_OFFSET
bl trap_reloc
- li r7, .L_Decrementer - _start + EXC_OFF_SYS_RESET
+ li r7,.L_FPUnavailable - _start + _START_OFFSET
bl trap_reloc
- li r7, .L_IntervalTimer - _start + EXC_OFF_SYS_RESET
- li r8, _end_of_vectors - _start + EXC_OFF_SYS_RESET
+ li r7,.L_Decrementer - _start + _START_OFFSET
+ bl trap_reloc
+ li r7,.L_IntervalTimer - _start + _START_OFFSET
+ li r8,_end_of_vectors - _start + _START_OFFSET
2:
bl trap_reloc
- addi r7, r7, 0x100 /* next exception vector */
- cmplw 0, r7, r8
+ addi r7,r7,0x100 /* next exception vector */
+ cmplw 0,r7,r8
blt 2b
lis r7,0x0
- mtspr IVPR, r7
+ mtspr IVPR,r7
mtlr r4 /* restore link register */
blr
@@ -1121,13 +1045,13 @@ trap_init:
* Function: relocate entries for one exception vector
*/
trap_reloc:
- lwz r0, 0(r7) /* hdlr ... */
- add r0, r0, r3 /* ... += dest_addr */
- stw r0, 0(r7)
+ lwz r0,0(r7) /* hdlr ... */
+ add r0,r0,r3 /* ... += dest_addr */
+ stw r0,0(r7)
- lwz r0, 4(r7) /* int_return ... */
- add r0, r0, r3 /* ... += dest_addr */
- stw r0, 4(r7)
+ lwz r0,4(r7) /* int_return ... */
+ add r0,r0,r3 /* ... += dest_addr */
+ stw r0,4(r7)
blr
@@ -1135,13 +1059,13 @@ trap_reloc:
.globl unlock_ram_in_cache
unlock_ram_in_cache:
/* invalidate the INIT_RAM section */
- lis r3, (CFG_INIT_RAM_ADDR & ~31)@h
- ori r3, r3, (CFG_INIT_RAM_ADDR & ~31)@l
- li r2,512
- mtctr r2
-1: icbi r0, r3
- dcbi r0, r3
- addi r3, r3, 32
+ lis r3,(CFG_INIT_RAM_ADDR & ~31)@h
+ ori r3,r3,(CFG_INIT_RAM_ADDR & ~31)@l
+ li r4,512
+ mtctr r4
+1: icbi r0,r3
+ dcbi r0,r3
+ addi r3,r3,32
bdnz 1b
sync /* Wait for all icbi to complete on bus */
isync
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-02 17:03:07 +0000