drivers: partition: support different block size

[project/bcm63xx/atf.git] / docs / getting_started / porting-guide.rst

diff --git a/docs/getting_started/porting-guide.rst b/docs/getting_started/porting-guide.rst
index 5786dd38495f69323dd3ff6ee4a9ee5c9a8c4ce3..97ed1fa43a107667702765a2070010c2ffd77fd3 100644 (file)
--- a/docs/getting_started/porting-guide.rst
+++ b/docs/getting_started/porting-guide.rst
@@ -546,6 +546,13 @@ optionally be defined:
    PLAT_PARTITION_MAX_ENTRIES := 12
    $(eval $(call add_define,PLAT_PARTITION_MAX_ENTRIES))
 
+-  **PLAT_PARTITION_BLOCK_SIZE**
+   The size of partition block. It could be either 512 bytes or 4096 bytes.
+   The default value is 512.
+   `For example, define the build flag in platform.mk`_:
+   PLAT_PARTITION_BLOCK_SIZE := 4096
+   $(eval $(call add_define,PLAT_PARTITION_BLOCK_SIZE))
+
 The following constant is optional. It should be defined to override the default
 behaviour of the ``assert()`` function (for example, to save memory).