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authorBecky Bruce <bgill@freescale.com>2006-02-08 16:41:26 -0600
committerPaul Mackerras <paulus@samba.org>2006-02-10 16:52:00 +1100
commita7cb03375d794d3494561bbad90aeab13ff7e4d0 (patch)
tree4d813b2a02a0b22912ce19402dfcb507871aa48e /arch
parentfbc94e7c3d78d53c7fa671e02e5bb6fbb3254f85 (diff)
downloadop-kernel-dev-a7cb03375d794d3494561bbad90aeab13ff7e4d0.zip
op-kernel-dev-a7cb03375d794d3494561bbad90aeab13ff7e4d0.tar.gz
[PATCH] powerpc/ppc: Add missing isyncs in head_fsl_booke.S
The e500 core reference manual indicates that isync is required after mtmsr(DE bit) and mtspr DBCR0. Add isyncs to make the code conform to the spec. Signed-off-by: Becky Bruce <becky.bruce@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/powerpc/kernel/head_fsl_booke.S4
-rw-r--r--arch/ppc/kernel/head_fsl_booke.S4
2 files changed, 8 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/head_fsl_booke.S b/arch/powerpc/kernel/head_fsl_booke.S
index 8d60fa9..0abd05f 100644
--- a/arch/powerpc/kernel/head_fsl_booke.S
+++ b/arch/powerpc/kernel/head_fsl_booke.S
@@ -316,6 +316,7 @@ skpinv: addi r6,r6,1 /* Increment */
*/
lis r2,DBCR0_IDM@h
mtspr SPRN_DBCR0,r2
+ isync
/* clear any residual debug events */
li r2,-1
mtspr SPRN_DBSR,r2
@@ -1002,12 +1003,15 @@ _GLOBAL(giveup_fpu)
_GLOBAL(abort)
li r13,0
mtspr SPRN_DBCR0,r13 /* disable all debug events */
+ isync
mfmsr r13
ori r13,r13,MSR_DE@l /* Enable Debug Events */
mtmsr r13
+ isync
mfspr r13,SPRN_DBCR0
lis r13,(DBCR0_IDM|DBCR0_RST_CHIP)@h
mtspr SPRN_DBCR0,r13
+ isync
_GLOBAL(set_context)
diff --git a/arch/ppc/kernel/head_fsl_booke.S b/arch/ppc/kernel/head_fsl_booke.S
index 8d60fa9..0abd05f 100644
--- a/arch/ppc/kernel/head_fsl_booke.S
+++ b/arch/ppc/kernel/head_fsl_booke.S
@@ -316,6 +316,7 @@ skpinv: addi r6,r6,1 /* Increment */
*/
lis r2,DBCR0_IDM@h
mtspr SPRN_DBCR0,r2
+ isync
/* clear any residual debug events */
li r2,-1
mtspr SPRN_DBSR,r2
@@ -1002,12 +1003,15 @@ _GLOBAL(giveup_fpu)
_GLOBAL(abort)
li r13,0
mtspr SPRN_DBCR0,r13 /* disable all debug events */
+ isync
mfmsr r13
ori r13,r13,MSR_DE@l /* Enable Debug Events */
mtmsr r13
+ isync
mfspr r13,SPRN_DBCR0
lis r13,(DBCR0_IDM|DBCR0_RST_CHIP)@h
mtspr SPRN_DBCR0,r13
+ isync
_GLOBAL(set_context)
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