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authorKumar Gala <galak@kernel.crashing.org>2009-01-08 08:31:20 -0600
committerKumar Gala <galak@kernel.crashing.org>2009-01-28 18:16:50 -0600
commit105c31df6fc5a424b480321763b5598cf3817821 (patch)
treeda2bee2ae3db6b0af900947f60cb0c7bf1b9bd1f /arch/powerpc/kernel/head_fsl_booke.S
parent0585a155a7318e69d43ef20636c2f072ad17d03f (diff)
powerpc/fsl-booke: Cleanup init/exception setup to be runtime
We currently have a few variants of fsl-booke processors (e500v1, e500v2, e500mc, and e200). They all have minor differences that we had previously been handling via ifdefs. To move towards having this support the following changes have been made: * PID1, PID2 only exist on e500v1 & e500v2 and should not be accessed on e500mc or e200. We use MMUCFG[NPIDS] to determine which case we are since we only touch PID1/2 in extremely early init code. * Not all IVORs exist on all the processors so introduce cpu_setup functions for each variant to setup the proper IVORs that are either unique or exist but have some variations between the processors Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/kernel/head_fsl_booke.S')
-rw-r--r--arch/powerpc/kernel/head_fsl_booke.S81
1 files changed, 54 insertions, 27 deletions
diff --git a/arch/powerpc/kernel/head_fsl_booke.S b/arch/powerpc/kernel/head_fsl_booke.S
index 36ffb3504a4..64ecb1603a7 100644
--- a/arch/powerpc/kernel/head_fsl_booke.S
+++ b/arch/powerpc/kernel/head_fsl_booke.S
@@ -103,10 +103,15 @@ invstr: mflr r6 /* Make it accessible */
or r7,r7,r4
mtspr SPRN_MAS6,r7
tlbsx 0,r6 /* search MSR[IS], SPID=PID0 */
-#ifndef CONFIG_E200
mfspr r7,SPRN_MAS1
andis. r7,r7,MAS1_VALID@h
bne match_TLB
+
+ mfspr r7,SPRN_MMUCFG
+ rlwinm r7,r7,21,28,31 /* extract MMUCFG[NPIDS] */
+ cmpwi r7,3
+ bne match_TLB /* skip if NPIDS != 3 */
+
mfspr r7,SPRN_PID1
slwi r7,r7,16
or r7,r7,r4
@@ -120,7 +125,7 @@ invstr: mflr r6 /* Make it accessible */
or r7,r7,r4
mtspr SPRN_MAS6,r7
tlbsx 0,r6 /* Fall through, we had to match */
-#endif
+
match_TLB:
mfspr r7,SPRN_MAS0
rlwinm r3,r7,16,20,31 /* Extract MAS0(Entry) */
@@ -215,14 +220,19 @@ skpinv: addi r6,r6,1 /* Increment */
/* 4. Clear out PIDs & Search info */
li r6,0
+ mtspr SPRN_MAS6,r6
mtspr SPRN_PID0,r6
-#ifndef CONFIG_E200
+
+ mfspr r7,SPRN_MMUCFG
+ rlwinm r7,r7,21,28,31 /* extract MMUCFG[NPIDS] */
+ cmpwi r7,3
+ bne 2f /* skip if NPIDS != 3 */
+
mtspr SPRN_PID1,r6
mtspr SPRN_PID2,r6
-#endif
- mtspr SPRN_MAS6,r6
/* 5. Invalidate mapping we started in */
+2:
lis r7,0x1000 /* Set MAS0(TLBSEL) = 1 */
rlwimi r7,r3,16,4,15 /* Setup MAS0 = TLBSEL | ESEL(r3) */
mtspr SPRN_MAS0,r7
@@ -298,19 +308,7 @@ skpinv: addi r6,r6,1 /* Increment */
SET_IVOR(12, WatchdogTimer);
SET_IVOR(13, DataTLBError);
SET_IVOR(14, InstructionTLBError);
- SET_IVOR(15, DebugDebug);
-#if defined(CONFIG_E500) && !defined(CONFIG_PPC_E500MC)
SET_IVOR(15, DebugCrit);
-#endif
- SET_IVOR(32, SPEUnavailable);
- SET_IVOR(33, SPEFloatingPointData);
- SET_IVOR(34, SPEFloatingPointRound);
-#ifndef CONFIG_E200
- SET_IVOR(35, PerformanceMonitor);
-#endif
-#ifdef CONFIG_PPC_E500MC
- SET_IVOR(36, Doorbell);
-#endif
/* Establish the interrupt vector base */
lis r4,interrupt_base@h /* IVPR only uses the high 16-bits */
@@ -329,12 +327,6 @@ skpinv: addi r6,r6,1 /* Increment */
oris r2,r2,HID0_DOZE@h
mtspr SPRN_HID0, r2
#endif
-#ifdef CONFIG_E200
- /* enable dedicated debug exception handling resources (Debug APU) */
- mfspr r2,SPRN_HID0
- ori r2,r2,HID0_DAPUEN@l
- mtspr SPRN_HID0,r2
-#endif
#if !defined(CONFIG_BDI_SWITCH)
/*
@@ -706,15 +698,11 @@ interrupt_base:
/* Performance Monitor */
EXCEPTION(0x2060, PerformanceMonitor, performance_monitor_exception, EXC_XFER_STD)
-#ifdef CONFIG_PPC_E500MC
EXCEPTION(0x2070, Doorbell, unknown_exception, EXC_XFER_STD)
-#endif
/* Debug Interrupt */
DEBUG_DEBUG_EXCEPTION
-#if defined(CONFIG_E500) && !defined(CONFIG_PPC_E500MC)
DEBUG_CRIT_EXCEPTION
-#endif
/*
* Local functions
@@ -897,6 +885,45 @@ KernelSPE:
* Global functions
*/
+/* Adjust or setup IVORs for e200 */
+_GLOBAL(__setup_e200_ivors)
+ li r3,DebugDebug@l
+ mtspr SPRN_IVOR15,r3
+ li r3,SPEUnavailable@l
+ mtspr SPRN_IVOR32,r3
+ li r3,SPEFloatingPointData@l
+ mtspr SPRN_IVOR33,r3
+ li r3,SPEFloatingPointRound@l
+ mtspr SPRN_IVOR34,r3
+ sync
+ blr
+
+/* Adjust or setup IVORs for e500v1/v2 */
+_GLOBAL(__setup_e500_ivors)
+ li r3,DebugCrit@l
+ mtspr SPRN_IVOR15,r3
+ li r3,SPEUnavailable@l
+ mtspr SPRN_IVOR32,r3
+ li r3,SPEFloatingPointData@l
+ mtspr SPRN_IVOR33,r3
+ li r3,SPEFloatingPointRound@l
+ mtspr SPRN_IVOR34,r3
+ li r3,PerformanceMonitor@l
+ mtspr SPRN_IVOR35,r3
+ sync
+ blr
+
+/* Adjust or setup IVORs for e500mc */
+_GLOBAL(__setup_e500mc_ivors)
+ li r3,DebugDebug@l
+ mtspr SPRN_IVOR15,r3
+ li r3,PerformanceMonitor@l
+ mtspr SPRN_IVOR35,r3
+ li r3,Doorbell@l
+ mtspr SPRN_IVOR36,r3
+ sync
+ blr
+
/*
* extern void loadcam_entry(unsigned int index)
*