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[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>
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arch
@ -316,6 +316,7 @@ skpinv: addi r6,r6,1 /* Increment */
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*/
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lis r2,DBCR0_IDM@h
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mtspr SPRN_DBCR0,r2
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isync
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/* clear any residual debug events */
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li r2,-1
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mtspr SPRN_DBSR,r2
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@ -1002,12 +1003,15 @@ _GLOBAL(giveup_fpu)
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_GLOBAL(abort)
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li r13,0
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mtspr SPRN_DBCR0,r13 /* disable all debug events */
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isync
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mfmsr r13
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ori r13,r13,MSR_DE@l /* Enable Debug Events */
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mtmsr r13
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isync
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mfspr r13,SPRN_DBCR0
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lis r13,(DBCR0_IDM|DBCR0_RST_CHIP)@h
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mtspr SPRN_DBCR0,r13
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isync
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_GLOBAL(set_context)
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@ -316,6 +316,7 @@ skpinv: addi r6,r6,1 /* Increment */
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*/
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lis r2,DBCR0_IDM@h
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mtspr SPRN_DBCR0,r2
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isync
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/* clear any residual debug events */
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li r2,-1
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mtspr SPRN_DBSR,r2
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@ -1002,12 +1003,15 @@ _GLOBAL(giveup_fpu)
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_GLOBAL(abort)
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li r13,0
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mtspr SPRN_DBCR0,r13 /* disable all debug events */
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isync
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mfmsr r13
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ori r13,r13,MSR_DE@l /* Enable Debug Events */
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mtmsr r13
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isync
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mfspr r13,SPRN_DBCR0
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lis r13,(DBCR0_IDM|DBCR0_RST_CHIP)@h
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mtspr SPRN_DBCR0,r13
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isync
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_GLOBAL(set_context)
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