[U-Boot] [PATCH v4 13/13] fit: make sha256 support optional

dirk.eibach at gdsys.cc
2014-07-03T07:28:26Z

From: Dirk Eibach <dirk.eibach@gdsys.cc>

sha256 has some beefy memory footprint.
Make it optional for constrained systems.

Signed-off-by: Dirk Eibach <dirk.eibach@gdsys.cc>
---

Changes in v4:
- describe CONFIG_FIT_DISABLE_SHA256 in README

Changes in v3: None
Changes in v2:
- make sha256 support optional

README | 5 +++++
include/configs/dlvision-10g.h | 1 +
include/configs/io.h | 1 +
include/configs/iocon.h | 1 +
include/configs/neo.h | 1 +
include/image.h | 5 +++++
6 files changed, 14 insertions(+)

diff --git a/README b/README
index 1fc8f00..61c66cb 100644
--- a/README
+++ b/README
@@ -3249,6 +3249,11 @@ FIT uImage format:
disabled. If a board need legacy image format support
enable this through CONFIG_IMAGE_FORMAT_LEGACY

+ CONFIG_FIT_DISABLE_SHA256
+ Supporting SHA256 hashes has quite an impact on binary size.
+ For constrained systems sha256 hash support can be disabled
+ with this option.
+
- Standalone program support:
CONFIG_STANDALONE_LOAD_ADDR

diff --git a/include/configs/dlvision-10g.h b/include/configs/dlvision-10g.h
index 2567a22..6153a40 100644
--- a/include/configs/dlvision-10g.h
+++ b/include/configs/dlvision-10g.h
@@ -40,6 +40,7 @@
/* new uImage format support */
#define CONFIG_FIT
#define CONFIG_FIT_VERBOSE /* enable fit_format_{error,warning}() */
+#define CONFIG_FIT_DISABLE_SHA256

#define CONFIG_ENV_IS_IN_FLASH /* use FLASH for environment vars */

diff --git a/include/configs/io.h b/include/configs/io.h
index 649c0fb..8e32c25 100644
--- a/include/configs/io.h
+++ b/include/configs/io.h
@@ -40,6 +40,7 @@
/* new uImage format support */
#define CONFIG_FIT
#define CONFIG_FIT_VERBOSE /* enable fit_format_{error,warning}() */
+#define CONFIG_FIT_DISABLE_SHA256

#define CONFIG_ENV_IS_IN_FLASH /* use FLASH for environment vars */

diff --git a/include/configs/iocon.h b/include/configs/iocon.h
index 35ba1bd..ae05bcb 100644
--- a/include/configs/iocon.h
+++ b/include/configs/iocon.h
@@ -39,6 +39,7 @@
/* new uImage format support */
#define CONFIG_FIT
#define CONFIG_FIT_VERBOSE /* enable fit_format_{error,warning}() */
+#define CONFIG_FIT_DISABLE_SHA256

#define CONFIG_ENV_IS_IN_FLASH /* use FLASH for environment vars */

diff --git a/include/configs/neo.h b/include/configs/neo.h
index 75dc862..4937730 100644
--- a/include/configs/neo.h
+++ b/include/configs/neo.h
@@ -37,6 +37,7 @@
/* new uImage format support */
#define CONFIG_FIT
#define CONFIG_FIT_VERBOSE /* enable fit_format_{error,warning}() */
+#define CONFIG_FIT_DISABLE_SHA256

#define CONFIG_ENV_IS_IN_FLASH /* use FLASH for environment vars */

diff --git a/include/image.h b/include/image.h
index b71e4ba..61d5885 100644
--- a/include/image.h
+++ b/include/image.h
@@ -72,6 +72,11 @@ struct lmb;
# define IMAGE_ENABLE_SHA256 1
# endif

+#ifdef CONFIG_FIT_DISABLE_SHA256
+#undef CONFIG_SHA256
+#undef IMAGE_ENABLE_SHA256
+#endif
+
#ifndef IMAGE_ENABLE_CRC32
#define IMAGE_ENABLE_CRC32 0
#endif
--
1.8.3