dfu: Support larger than memory transfers.

[karo-tx-uboot.git] / README

diff --git a/README b/README
index f7f41bc7ed0e50b8757800c96976c115c0b95f65..7879eef16f71aeba8676a3b3d92380ee7ff12623 100644 (file)
--- a/README
+++ b/README
@@ -1357,6 +1357,13 @@ The following options need to be configured:
                CONFIG_DFU_MMC
                This enables support for exposing (e)MMC devices via DFU.
 
+               CONFIG_SYS_DFU_MAX_FILE_SIZE
+               When updating files rather than the raw storage device,
+               we use a static buffer to copy the file into and then write
+               the buffer once we've been given the whole file.  Define
+               this to the maximum filesize (in bytes) for the buffer.
+               Default is 4 MiB if undefined.
+
 - Journaling Flash filesystem support:
                CONFIG_JFFS2_NAND, CONFIG_JFFS2_NAND_OFF, CONFIG_JFFS2_NAND_SIZE,
                CONFIG_JFFS2_NAND_DEV