current code support to use $(PCD) in the [FD] section, and lots of
platform FDF file already used this usage, so we update the FDF spec
first to align with code to reduce the incompatible change for
firmware developer.
Cc: Liming Gao <liming....@intel.com>
Cc: Michael Kinney <michael.d.kin...@intel.com>
Cc: Kevin W Shaw <kevin.w.s...@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Yonghong Zhu <yonghong....@intel.com>
---
2_fdf_design_discussion/24_[fd]_sections.md | 2 +-
3_edk_ii_fdf_file_format/35_[fd]_sections.md | 4 ++--
2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/2_fdf_design_discussion/24_[fd]_sections.md
b/2_fdf_design_discussion/24_[fd]_sections.md
index e532041..67e478e 100644
--- a/2_fdf_design_discussion/24_[fd]_sections.md
+++ b/2_fdf_design_discussion/24_[fd]_sections.md
@@ -162,11 +162,11 @@ For a PCD that has a datum type of `VOID`*, the data can
be a Unicode string,
as in `L"text"`, a valid C data array (it must be either a C format GUID or a
hex byte array), as in `{0x20, 0x01, 0x50, 0x00, 0x32, 0xFF, 0x00, 0xAA,
{0xFF, 0xF0, 0x00, 0x00, 0x00}}.`
For other PCD datum types, the value may be a boolean or a hex value, as in
`0x0000000F,` with a value that is consistent with the PCD's datum type.
-The value may also be a macro or it may be computed, using arithmetic
+The value may also be a macro or `$(PCD)` or it may be computed, using
arithmetic
operations, arithmetic expressions and or logical expressions. The value
portion of the `SET` statement, when using any of these computations are in-fix
expressions that are evaluated left to right, with items within parenthesis
evaluated before the outer expressions are evaluated. Use of parenthesis is
encouraged to remove ambiguity.
diff --git a/3_edk_ii_fdf_file_format/35_[fd]_sections.md
b/3_edk_ii_fdf_file_format/35_[fd]_sections.md
index f0003e7..e46fd7b 100644
--- a/3_edk_ii_fdf_file_format/35_[fd]_sections.md
+++ b/3_edk_ii_fdf_file_format/35_[fd]_sections.md
@@ -150,13 +150,13 @@ The `FvUiName` must be specified in a `[FV]` section
header defined in this the
file.
**_PcdValue_**
The PCD Value may be a specific numeric value, an array of numeric bytes, a
-GUID, a quoted string, an L quoted string (representing a unicode string), an
+GUID, a quoted string, an `L` quoted string (representing a unicode string), an
arithmetic expression, a logic expression or a macro from a previously defined
-macro statement.
+macro statement or a `$(PCD) format.
**_Expression_**
Refer to the EDK II Expression Syntax Specification for more information.
--
2.6.1.windows.1
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