aboutsummaryrefslogtreecommitdiffstats
path: root/arch/powerpc
diff options
context:
space:
mode:
authorBecky Bruce <bgill@freescale.com>2006-02-08 17:41:26 -0500
committerPaul Mackerras <paulus@samba.org>2006-02-10 00:52:00 -0500
commita7cb03375d794d3494561bbad90aeab13ff7e4d0 (patch)
tree4d813b2a02a0b22912ce19402dfcb507871aa48e /arch/powerpc
parentfbc94e7c3d78d53c7fa671e02e5bb6fbb3254f85 (diff)
[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/powerpc')
-rw-r--r--arch/powerpc/kernel/head_fsl_booke.S4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/head_fsl_booke.S b/arch/powerpc/kernel/head_fsl_booke.S
index 8d60fa99fc4b..0abd05f14f87 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 */
316 */ 316 */
317 lis r2,DBCR0_IDM@h 317 lis r2,DBCR0_IDM@h
318 mtspr SPRN_DBCR0,r2 318 mtspr SPRN_DBCR0,r2
319 isync
319 /* clear any residual debug events */ 320 /* clear any residual debug events */
320 li r2,-1 321 li r2,-1
321 mtspr SPRN_DBSR,r2 322 mtspr SPRN_DBSR,r2
@@ -1002,12 +1003,15 @@ _GLOBAL(giveup_fpu)
1002_GLOBAL(abort) 1003_GLOBAL(abort)
1003 li r13,0 1004 li r13,0
1004 mtspr SPRN_DBCR0,r13 /* disable all debug events */ 1005 mtspr SPRN_DBCR0,r13 /* disable all debug events */
1006 isync
1005 mfmsr r13 1007 mfmsr r13
1006 ori r13,r13,MSR_DE@l /* Enable Debug Events */ 1008 ori r13,r13,MSR_DE@l /* Enable Debug Events */
1007 mtmsr r13 1009 mtmsr r13
1010 isync
1008 mfspr r13,SPRN_DBCR0 1011 mfspr r13,SPRN_DBCR0
1009 lis r13,(DBCR0_IDM|DBCR0_RST_CHIP)@h 1012 lis r13,(DBCR0_IDM|DBCR0_RST_CHIP)@h
1010 mtspr SPRN_DBCR0,r13 1013 mtspr SPRN_DBCR0,r13
1014 isync
1011 1015
1012_GLOBAL(set_context) 1016_GLOBAL(set_context)
1013 1017