https://bugzilla.tianocore.org/show_bug.cgi?id=521
Cc: Liming Gao <[email protected]> Cc: Yonghong Zhu <[email protected]> Cc: Kevin W Shaw <[email protected]> Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Michael Kinney <[email protected]> --- 2_dsc_overview/28_pcd_section_processing.md | 12 ++++++++++-- 3_edk_ii_dsc_file_format/310_pcd_sections.md | 15 +++++++++++---- README.md | 5 +++-- 3 files changed, 24 insertions(+), 8 deletions(-) diff --git a/2_dsc_overview/28_pcd_section_processing.md b/2_dsc_overview/28_pcd_section_processing.md index 60e7de7..0969b41 100644 --- a/2_dsc_overview/28_pcd_section_processing.md +++ b/2_dsc_overview/28_pcd_section_processing.md @@ -103,10 +103,18 @@ of three categories: **Note:** For the dynamic types of PCDs, using an `$(Arch)` extension other than `common` in the section header is not valid. ********** -**Warning:** A PCD can only use one type for all modules. It is not permissible -to list a PCD in a PcdsFixedAtBuild section and also list it in a +**Warning:** A PCD can only use one type for all source modules. It is not +permissible to list a PCD in a PcdsFixedAtBuild section and also list it in a PcdsPatchableInModule section. ********** +**Note:** Binary modules included in a platform build are permitted to use the +PatchableInModule or DynamicEx access methods (the Binary module must specify +which of these two methods were used to create the binary module) regardless of +the method used for a given PCD in modules built from source. The build supports +binary modules that use the same or different PCD access method than the source +modules or other binary modules. The build parser must break with an error if a +PCD is listed as FixedAtBuild or Dynamic (not DynamicEx) in the Binary INF. +********** Datum Types for PCD values are either Boolean (`BOOLEAN` - 1 byte), numeric (`UINT8` - 1 byte, `UINT16` - 2 bytes, `UINT32` - 4 bytes or `UINT64` - 8 diff --git a/3_edk_ii_dsc_file_format/310_pcd_sections.md b/3_edk_ii_dsc_file_format/310_pcd_sections.md index bf20cc5..c061e5b 100644 --- a/3_edk_ii_dsc_file_format/310_pcd_sections.md +++ b/3_edk_ii_dsc_file_format/310_pcd_sections.md @@ -75,10 +75,17 @@ value specified in the INF file or the default value listed in the DEC file (for modules that do not list a preferred value). This same rule applies to `FeatureFlag` PCDs. -If the INF values differ (or are not listed) and the access methods are -different, then the build must break. A PCD can only use a single method of -access for the platform and all modules in the platform that use the PCD must -use the same access method. +If the Source INF values differ (or are not listed) and the access methods are +different, then the build must break. All source modules in a platform must use +the same PCD same access method. + +Binary modules included in a platform build are permitted to use the +PatchableInModule or DynamicEx access methods (the Binary module must specify +which of these two methods were used to create the binary module) regardless of +the method used for a given PCD in modules built from source. The build supports +binary modules that use the same or different PCD access method than the source +modules or other binary modules. The build parser must break with an error if a +PCD is listed as FixedAtBuild or Dynamic (not DynamicEx) in the Binary INF. If no value is entered in the DSC file, and no INF files provide a preferred value, then the DEC file's default value must be used. diff --git a/README.md b/README.md index 1d1f99c..eb6966f 100644 --- a/README.md +++ b/README.md @@ -176,7 +176,8 @@ Copyright (c) 2006-2017, Intel Corporation. All rights reserved. | | Update the DSC_SPECIFICATION version to 0x0001001A | | | | Revised WORKSPACE wording for updated build system that can handle packages located outside of the WORKSPACE directory tree (refer to the TianoCore.org/ EDKII website for additional instructions on setting up a development environment). | | | | Added new system environment variables used by the build system. | | -| 1.27 | Convert to GitBooks | April 2017 | +| 1.27 | Convert to GitBooks | May 2017 | | | [#351](https://bugzilla.tianocore.org/show_bug.cgi?id=351) [DSC Spec] Extend macro usage in the !include statement | | | | [#484](https://bugzilla.tianocore.org/show_bug.cgi?id=484) DSC spec: support Prebuild and Postbuild in the [Defines] section | | -| | [#353](https://bugzilla.tianocore.org/show_bug.cgi?id=353) Build spec: Allow nested includes in DSC and FDF files | | +| | [#353](https://bugzilla.tianocore.org/show_bug.cgi?id=353) Build spec: Allow nested includes in DSC and FDF files | | +| | [#521](https://bugzilla.tianocore.org/show_bug.cgi?id=521) DSC spec: add clarification for mixed PCD usage in the DSC spec | | -- 2.6.3.windows.1 _______________________________________________ edk2-devel mailing list [email protected] https://lists.01.org/mailman/listinfo/edk2-devel
