Messages in this thread |  | | From | Seiji Aguchi <> | | Date | Fri, 18 Nov 2011 18:04:40 -0500 | | Subject | RE: [RFC][PATCH]ACPI,APEI,ERST, back end driver for NVRAM |
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Hi,
>According to ACPI 4.0a spec: > >""" >17.5.2.4.1 Error Log Address Range Resides in NVRAM >
Thank you for giving me the information. Let me clarify one thing.
If the busy bit can be cleared immediately, we don't need to check busy bit with CHECK_BUSY_STATUS. So, we should simply execute OSPM operations as follows.
- Writing 1. BEGIN_WRITE 2. SET_RECORD_OFFSET 3. EXECUTE_OPERATION 4. END
- Reading 1. BEGIN_READ 2. SET_RECORD_OFFSET 3. SET_RECORD_ID 4. EXECUTE_OPERATION (END operation is not needed because OSPM requires no platform support to read.)
- Clearing 1. BEGIN_CLEAR 2. SET_RECORD_ID 3. EXECUTE_OPERATION (END operation is not needed because OSPM requires no platform support to clear.)
Is this what you expected?
Seiji
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