add block support

This adds a simple block layer to barebox. Reading and writing
to block devices can be painfully slow without caching, so
add a simple caching layer here.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 6 insertions, 0 deletions

diff --git a/common/Kconfig b/common/Kconfig
index 9e30579a79..ac8323132d 100644
--- a/common/Kconfig
+++ b/common/Kconfig
@@ -31,6 +31,12 @@ config ENV_HANDLING
 config GENERIC_GPIO
 	bool
 
+config BLOCK
+	bool
+
+config BLOCK_WRITE
+	bool
+
 menu "General Settings              "
 
 config LOCALVERSION_AUTO