diff options
| author | Becky Bruce <bgill@freescale.com> | 2006-02-08 16:41:26 -0600 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2006-02-10 16:52:00 +1100 |
| commit | a7cb03375d794d3494561bbad90aeab13ff7e4d0 (patch) | |
| tree | 4d813b2a02a0b22912ce19402dfcb507871aa48e /arch/powerpc/kernel | |
| parent | fbc94e7c3d78d53c7fa671e02e5bb6fbb3254f85 (diff) | |
| download | lwn-a7cb03375d794d3494561bbad90aeab13ff7e4d0.tar.gz lwn-a7cb03375d794d3494561bbad90aeab13ff7e4d0.zip | |
[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/kernel')
| -rw-r--r-- | arch/powerpc/kernel/head_fsl_booke.S | 4 |
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 */ */ 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) |