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| author | Prabhakar Kushwaha <prabhakar@freescale.com> | 2012-02-14 22:49:29 +0000 |
|---|---|---|
| committer | Andy Fleming <afleming@freescale.com> | 2012-04-24 23:58:30 -0500 |
| commit | a4107f86173256e6c8710af717805512f5dbbf85 (patch) | |
| tree | 73b266eb01edf68a5dcd602da21f48fda7da5d90 /arch/powerpc | |
| parent | 617e46e3c01da2785d320d48d1248c97edbab685 (diff) | |
| download | u-boot-imx-a4107f86173256e6c8710af717805512f5dbbf85.zip u-boot-imx-a4107f86173256e6c8710af717805512f5dbbf85.tar.gz u-boot-imx-a4107f86173256e6c8710af717805512f5dbbf85.tar.bz2 | |
powerpc/85xx:Avoid hardcoded vector address for IVORs
For e500 and e500v2 architecturees processor IVPR address should be alinged on
64K boundary.
in start.S, CONFIG_SYS_MONITOR_BASE is stored blindly in IVPR assuming it to be
64K aligned. It may not be true always. If it is not aligned, IVPR + IVORs may
not point to an exception handler.
Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/cpu/mpc85xx/start.S | 65 |
1 files changed, 34 insertions, 31 deletions
diff --git a/arch/powerpc/cpu/mpc85xx/start.S b/arch/powerpc/cpu/mpc85xx/start.S index 4d37d6e..2b29364 100644 --- a/arch/powerpc/cpu/mpc85xx/start.S +++ b/arch/powerpc/cpu/mpc85xx/start.S @@ -1,5 +1,5 @@ /* - * 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 @@ -183,37 +183,40 @@ l2_disabled: 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 */ /* Clear and set up some registers. */ li r0,0x0000 |