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-rw-r--r--tools/binman/etype/u_boot_dtb_with_ucode.py12
1 files changed, 10 insertions, 2 deletions
diff --git a/tools/binman/etype/u_boot_dtb_with_ucode.py b/tools/binman/etype/u_boot_dtb_with_ucode.py
index 55d3a38a64f..752d0ac0ba2 100644
--- a/tools/binman/etype/u_boot_dtb_with_ucode.py
+++ b/tools/binman/etype/u_boot_dtb_with_ucode.py
@@ -14,8 +14,16 @@ import tools
class Entry_u_boot_dtb_with_ucode(Entry_blob):
"""A U-Boot device tree file, with the microcode removed
- See Entry_u_boot_ucode for full details of the 3 entries involved in this
- process.
+ Properties / Entry arguments:
+ - filename: Filename of u-boot.dtb (default 'u-boot.dtb')
+
+ See Entry_u_boot_ucode for full details of the three entries involved in
+ this process. This entry provides the U-Boot device-tree file, which
+ contains the microcode. If the microcode is not being collated into one
+ place then the offset and size of the microcode is recorded by this entry,
+ for use by u_boot_with_ucode_ptr. If it is being collated, then this
+ entry deletes the microcode from the device tree (to save space) and makes
+ it available to u_boot_ucode.
"""
def __init__(self, section, etype, node):
Entry_blob.__init__(self, section, etype, node)