Opened on 06/02/09 at 22:56:54
Closed on 11/09/09 at 14:49:30
#1420 closed defect (fixed)
MCF5282 chip errata -- Buffered Write May Be Executed Twice
Reported by: | Eric Norum | Owned by: | Joel Sherrill |
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Priority: | normal | Milestone: | 4.10 |
Component: | bsps | Version: | 4.9 |
Severity: | normal | Keywords: | |
Cc: | norume@… | Blocked By: | |
Blocking: |
Description
Buffered writes must be disabled as described in "MCF5282 Chip Errata",
MCF5282DE, Rev. 6, 5/2009:
SECF124: Buffered Write May Be Executed Twice
Errata type: Silicon
Affected component: Cache
Description: If buffered writes are enabled using the CACR or ACR
registers, the imprecise write transaction generated
by a buffered write may be executed twice.
Workaround: Do not enable buffered writes in the CACR or ACR registers:
CACR[8] = DBWE (default buffered write enable) must be 0
ACRn[5] = BUFW (buffered write enable) must be 0
Fix plan: Currently, there are no plans to fix this.
I have modified c/src/lib/libbsp/m68k/uC5282/startup/bspstart.c and committed the change to the trunk and to the R4.9 branch.
Change History (1)
comment:1 Changed on 11/09/09 at 14:49:30 by Joel Sherrill
Resolution: | → fixed |
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Status: | new → closed |
You applied patch so should be closed.