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powerpc/e5500: set non-base IVORs

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Without this, we attempt to use doorbells for IPIs, and end up
branching to some bad address.  Plus, even for the exceptions
we don't implement, it's good to handle it and get a message out.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This commit is contained in:
Scott Wood
2011-05-09 16:26:00 -05:00
committed by Kumar Gala
parent d36b4c4f3c
commit 3a6e9bd7f6
3 changed files with 54 additions and 0 deletions
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3
arch/powerpc/kernel/cpu_setup_fsl_booke.S
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@@ -88,6 +88,9 @@ _GLOBAL(__setup_cpu_e5500)
bl __e500_dcache_setup
#ifdef CONFIG_PPC_BOOK3E_64
bl .__setup_base_ivors
bl .setup_perfmon_ivor
bl .setup_doorbell_ivors
bl .setup_ehv_ivors
#else
bl __setup_e500mc_ivors
#endif

47
arch/powerpc/kernel/exceptions-64e.S
View File

@@ -269,8 +269,13 @@ interrupt_base_book3e: /* fake trap */
EXCEPTION_STUB(0x1a0, watchdog) /* 0x09f0 */
EXCEPTION_STUB(0x1c0, data_tlb_miss)
EXCEPTION_STUB(0x1e0, instruction_tlb_miss)
EXCEPTION_STUB(0x260, perfmon)
EXCEPTION_STUB(0x280, doorbell)
EXCEPTION_STUB(0x2a0, doorbell_crit)
EXCEPTION_STUB(0x2c0, guest_doorbell)
EXCEPTION_STUB(0x2e0, guest_doorbell_crit)
EXCEPTION_STUB(0x300, hypercall)
EXCEPTION_STUB(0x320, ehpriv)
.globl interrupt_end_book3e
interrupt_end_book3e:
@@ -514,6 +519,8 @@ kernel_dbg_exc:
bl .DebugException
b .ret_from_except
MASKABLE_EXCEPTION(0x260, perfmon, .performance_monitor_exception, ACK_NONE)
/* Doorbell interrupt */
MASKABLE_EXCEPTION(0x2070, doorbell, .doorbell_exception, ACK_NONE)
@@ -528,6 +535,11 @@ kernel_dbg_exc:
// b ret_from_crit_except
b .
MASKABLE_EXCEPTION(0x2c0, guest_doorbell, .unknown_exception, ACK_NONE)
MASKABLE_EXCEPTION(0x2e0, guest_doorbell_crit, .unknown_exception, ACK_NONE)
MASKABLE_EXCEPTION(0x310, hypercall, .unknown_exception, ACK_NONE)
MASKABLE_EXCEPTION(0x320, ehpriv, .unknown_exception, ACK_NONE)
/*
* An interrupt came in while soft-disabled; clear EE in SRR1,
@@ -647,7 +659,12 @@ fast_exception_return:
BAD_STACK_TRAMPOLINE(0x000)
BAD_STACK_TRAMPOLINE(0x100)
BAD_STACK_TRAMPOLINE(0x200)
BAD_STACK_TRAMPOLINE(0x260)
BAD_STACK_TRAMPOLINE(0x2c0)
BAD_STACK_TRAMPOLINE(0x2e0)
BAD_STACK_TRAMPOLINE(0x300)
BAD_STACK_TRAMPOLINE(0x310)
BAD_STACK_TRAMPOLINE(0x320)
BAD_STACK_TRAMPOLINE(0x400)
BAD_STACK_TRAMPOLINE(0x500)
BAD_STACK_TRAMPOLINE(0x600)
@@ -1183,3 +1200,33 @@ _GLOBAL(__setup_base_ivors)
sync
blr
_GLOBAL(setup_perfmon_ivor)
SET_IVOR(35, 0x260) /* Performance Monitor */
blr
_GLOBAL(setup_doorbell_ivors)
SET_IVOR(36, 0x280) /* Processor Doorbell */
SET_IVOR(37, 0x2a0) /* Processor Doorbell Crit */
/* Check MMUCFG[LPIDSIZE] to determine if we have category E.HV */
mfspr r10,SPRN_MMUCFG
rlwinm. r10,r10,0,MMUCFG_LPIDSIZE
beqlr
SET_IVOR(38, 0x2c0) /* Guest Processor Doorbell */
SET_IVOR(39, 0x2e0) /* Guest Processor Doorbell Crit/MC */
blr
_GLOBAL(setup_ehv_ivors)
/*
* We may be running as a guest and lack E.HV even on a chip
* that normally has it.
*/
mfspr r10,SPRN_MMUCFG
rlwinm. r10,r10,0,MMUCFG_LPIDSIZE
beqlr
SET_IVOR(40, 0x300) /* Embedded Hypervisor System Call */
SET_IVOR(41, 0x320) /* Embedded Hypervisor Privilege */
blr