[REBASE & FF] Add AdvLogger PRM Module #471
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...erOsConnectorPrm/Library/AdvLoggerOsConnectorPrmConfigLib/AdvLoggerOsConnectorPrmConfigLib.c
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Codecov ReportAttention: Patch coverage is
Additional details and impacted files@@ Coverage Diff @@
## release/202311 #471 +/- ##
==================================================
- Coverage 12.13% 10.86% -1.28%
==================================================
Files 110 142 +32
Lines 18991 22379 +3388
Branches 1756 1808 +52
==================================================
+ Hits 2305 2431 +126
- Misses 16654 19916 +3262
Partials 32 32
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5 tasks
The V4 Adv Logger Info structure uses pointers for LogCurrent and
LogBuffer. These pointers are not required and have additional
safety overhead. Furthermore, the pointers do not support a
runtime logger in an ARM64 environment, as StMM requires the
pointers to be physical but the runtime logger requires the
pointers to be virtual.
The V5 structure moves these to two new fields, LogCurrentOffset
and LogBufferOffset, respectively, to avoid using pointers and
be able to support runtime logging on ARM64.
- [x] Impacts functionality?
- **Functionality** - Does the change ultimately impact how firmware
functions?
- Examples: Add a new library, publish a new PPI, update an algorithm,
...
- [x] Impacts security?
- **Security** - Does the change have a direct security impact on an
application,
flow, or firmware?
- Examples: Crypto algorithm change, buffer overflow fix, parameter
validation improvement, ...
- [x] Breaking change?
- **Breaking change** - Will anyone consuming this change experience a
break
in build or boot behavior?
- Examples: Add a new library class, move a module to a different repo,
call
a function in a new library class in a pre-existing module, ...
- [ ] Includes tests?
- **Tests** - Does the change include any explicit test code?
- Examples: Unit tests, integration tests, robot tests, ...
- [ ] Includes documentation?
- **Documentation** - Does the change contain explicit documentation
additions
outside direct code modifications (and comments)?
- Examples: Update readme file, add feature readme file, link to
documentation
on an a separate Web page, ...
Tested on various physical and virtual platforms to confirm the
log is output as expected with the V5 structure.
Update to this commit and use the new version of DecodeUefiLog.py
to correctly decode a V5 Adv Logger Log.
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This commit adds the Adv Logger PRM Module. It is an alternate
way to fetch the Adv Logger Log that does not require SMM/Secure World
access. It also is independently serviceable from the OS.
- [x] Impacts functionality?
- **Functionality** - Does the change ultimately impact how firmware
functions?
- Examples: Add a new library, publish a new PPI, update an algorithm,
...
- [x] Impacts security?
- **Security** - Does the change have a direct security impact on an
application,
flow, or firmware?
- Examples: Crypto algorithm change, buffer overflow fix, parameter
validation improvement, ...
- [ ] Breaking change?
- **Breaking change** - Will anyone consuming this change experience a
break
in build or boot behavior?
- Examples: Add a new library class, move a module to a different repo,
call
a function in a new library class in a pre-existing module, ...
- [x] Includes tests?
- **Tests** - Does the change include any explicit test code?
- Examples: Unit tests, integration tests, robot tests, ...
- [x] Includes documentation?
- **Documentation** - Does the change contain explicit documentation
additions
outside direct code modifications (and comments)?
- Examples: Update readme file, add feature readme file, link to
documentation
on an a separate Web page, ...
Tested on various physical and virtual platforms to ensure the
log was the same between the GetVariable interface and the PRM
interface.
See the README update for integration instructions.
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Description
This adds a PRM Module to fetch the Advanced Logger Log. It includes a sample Windows drive to query the PRM module and get the log. It also updates the Advanced Logger structure to V5 to use offsets instead of pointers for LogCurrent and LogBuffer. It updates DecodeUefiLog.py to be able to read this V5 structure.
flow, or firmware?
validation improvement, ...
in build or boot behavior?
a function in a new library class in a pre-existing module, ...
outside direct code modifications (and comments)?
on an a separate Web page, ...
How This Was Tested
Tested on Q35 on mu_tiano_platforms by booting to Windows, running the sample driver to fetch the log, then decoding with DecodeUefiLog.py. Also tested on various physical platforms.
Integration Instructions
See README updates for integration instructions.