FIT: Rename FIT_DISABLE_SHA256 to FIT_ENABLE_SHA256_SUPPORT

We rename CONFIG_FIT_DISABLE_SHA256 to CONFIG_FIT_ENABLE_SHA256_SUPPORT which
is enabled by default and now a positive option.  Convert the handful of boards
that were disabling it before to save space.

Cc: Dirk Eibach <eibach@gdsys.de>
Cc: Lukasz Dalek <luk0104@gmail.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Simon Glass <sjg@chromium.org>

diff --git a/Kconfig b/Kconfig
index 1cf990d..0a44531 100644 (file)
--- a/Kconfig
+++ b/Kconfig
@@ -157,6 +157,19 @@ config FIT
 
 if FIT
 
+config FIT_ENABLE_SHA256_SUPPORT
+       bool "Support SHA256 checksum of FIT image contents"
+       default y
+       help
+         Enable this to support SHA256 checksum of FIT image contents. A
+         SHA256 checksum is a 256-bit (32-byte) hash value used to check that
+         the image contents have not been corrupted. SHA256 is recommended
+         for use in secure applications since (as at 2016) there is no known
+         feasible attack that could produce a 'collision' with differing
+         input data. Use this for the highest security. Note that only the
+         SHA256 variant is supported: SHA512 and others are not currently
+         supported in U-Boot.
+
 config FIT_SIGNATURE
        bool "Enable signature verification of FIT uImages"
        depends on DM

diff --git a/README b/README
index 350b805..15ef469 100644 (file)
--- a/README
+++ b/README
@@ -2973,15 +2973,6 @@ FIT uImage format:
                This define is introduced, as the legacy image format is
                enabled per default for backward compatibility.
 
-- FIT image support:
-               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.
-
-               TODO(sjg@chromium.org): Adjust this option to be positive,
-               and move it to Kconfig
-
 - Standalone program support:
                CONFIG_STANDALONE_LOAD_ADDR
 

diff --git a/configs/dlvision-10g_defconfig b/configs/dlvision-10g_defconfig
index c3574e1..44f7527 100644 (file)
--- a/configs/dlvision-10g_defconfig
+++ b/configs/dlvision-10g_defconfig
@@ -3,6 +3,7 @@ CONFIG_IDENT_STRING=" dlvision-10g 0.06"
 CONFIG_4xx=y
 CONFIG_TARGET_DLVISION_10G=y
 CONFIG_FIT=y
+# CONFIG_FIT_ENABLE_SHA256_SUPPORT is not set
 CONFIG_FIT_VERBOSE=y
 CONFIG_OF_BOARD_SETUP=y
 CONFIG_BOOTDELAY=5

diff --git a/configs/dlvision_defconfig b/configs/dlvision_defconfig
index f9f07ee..4dd09a2 100644 (file)
--- a/configs/dlvision_defconfig
+++ b/configs/dlvision_defconfig
@@ -3,6 +3,7 @@ CONFIG_IDENT_STRING=" dlvision 0.02"
 CONFIG_4xx=y
 CONFIG_TARGET_DLVISION=y
 CONFIG_FIT=y
+# CONFIG_FIT_ENABLE_SHA256_SUPPORT is not set
 CONFIG_FIT_VERBOSE=y
 CONFIG_OF_BOARD_SETUP=y
 CONFIG_BOOTDELAY=5

diff --git a/configs/h2200_defconfig b/configs/h2200_defconfig
index b85ed59..9d3698c 100644 (file)
--- a/configs/h2200_defconfig
+++ b/configs/h2200_defconfig
@@ -1,6 +1,7 @@
 CONFIG_ARM=y
 CONFIG_TARGET_H2200=y
 CONFIG_FIT=y
+# CONFIG_FIT_ENABLE_SHA256_SUPPORT is not set
 CONFIG_SYS_CONSOLE_IS_IN_ENV=y
 # CONFIG_DISPLAY_CPUINFO is not set
 # CONFIG_DISPLAY_BOARDINFO is not set

diff --git a/configs/io_defconfig b/configs/io_defconfig
index 5dca2b1..27edc59 100644 (file)
--- a/configs/io_defconfig
+++ b/configs/io_defconfig
@@ -3,6 +3,7 @@ CONFIG_IDENT_STRING=" io 0.06"
 CONFIG_4xx=y
 CONFIG_TARGET_IO=y
 CONFIG_FIT=y
+# CONFIG_FIT_ENABLE_SHA256_SUPPORT is not set
 CONFIG_FIT_VERBOSE=y
 CONFIG_OF_BOARD_SETUP=y
 CONFIG_BOOTDELAY=5

diff --git a/configs/iocon_defconfig b/configs/iocon_defconfig
index c74df94..2529181 100644 (file)
--- a/configs/iocon_defconfig
+++ b/configs/iocon_defconfig
@@ -3,6 +3,7 @@ CONFIG_IDENT_STRING=" iocon 0.06"
 CONFIG_4xx=y
 CONFIG_TARGET_IOCON=y
 CONFIG_FIT=y
+# CONFIG_FIT_ENABLE_SHA256_SUPPORT is not set
 CONFIG_OF_BOARD_SETUP=y
 CONFIG_BOOTDELAY=5
 CONFIG_SYS_CONSOLE_INFO_QUIET=y

diff --git a/configs/neo_defconfig b/configs/neo_defconfig
index fbb2da4..1bf5151 100644 (file)
--- a/configs/neo_defconfig
+++ b/configs/neo_defconfig
@@ -3,6 +3,7 @@ CONFIG_IDENT_STRING=" neo 0.02"
 CONFIG_4xx=y
 CONFIG_TARGET_NEO=y
 CONFIG_FIT=y
+# CONFIG_FIT_ENABLE_SHA256_SUPPORT is not set
 CONFIG_FIT_VERBOSE=y
 CONFIG_OF_BOARD_SETUP=y
 CONFIG_BOOTDELAY=5

diff --git a/include/configs/dlvision-10g.h b/include/configs/dlvision-10g.h
index e32651f..c5e2276 100644 (file)
--- a/include/configs/dlvision-10g.h
+++ b/include/configs/dlvision-10g.h
@@ -31,9 +31,6 @@
 #define PLLMR0_DEFAULT PLLMR0_266_133_66
 #define PLLMR1_DEFAULT PLLMR1_266_133_66
 
-/* new uImage format support */
-#define CONFIG_FIT_DISABLE_SHA256
-
 #define CONFIG_ENV_IS_IN_FLASH /* use FLASH for environment vars */
 
 /*

diff --git a/include/configs/dlvision.h b/include/configs/dlvision.h
index 2b7d62b..f8d390b 100644 (file)
--- a/include/configs/dlvision.h
+++ b/include/configs/dlvision.h
@@ -29,9 +29,6 @@
 #define PLLMR0_DEFAULT PLLMR0_266_133_66_33
 #define PLLMR1_DEFAULT PLLMR1_266_133_66_33
 
-/* new uImage format support */
-#define CONFIG_FIT_DISABLE_SHA256
-
 #define CONFIG_ENV_IS_IN_FLASH /* use FLASH for environment vars */
 
 /*

diff --git a/include/configs/h2200.h b/include/configs/h2200.h
index d8724f8..530a88e 100644 (file)
--- a/include/configs/h2200.h
+++ b/include/configs/h2200.h
@@ -109,7 +109,6 @@
 
 #define CONFIG_SYS_BAUDRATE_TABLE      { 9600, 38400, 115200 }
 
-#define CONFIG_FIT_DISABLE_SHA256
 #define CONFIG_SETUP_MEMORY_TAGS
 #define CONFIG_CMDLINE_TAG
 #define CONFIG_INITRD_TAG

diff --git a/include/configs/io.h b/include/configs/io.h
index 3e44a8c..ee2b52a 100644 (file)
--- a/include/configs/io.h
+++ b/include/configs/io.h
@@ -31,9 +31,6 @@
 #define PLLMR0_DEFAULT PLLMR0_266_133_66
 #define PLLMR1_DEFAULT PLLMR1_266_133_66
 
-/* new uImage format support */
-#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 9c3be78..afa6994 100644 (file)
--- a/include/configs/iocon.h
+++ b/include/configs/iocon.h
@@ -33,9 +33,6 @@
 #define PLLMR0_DEFAULT PLLMR0_266_133_66
 #define PLLMR1_DEFAULT PLLMR1_266_133_66
 
-/* new uImage format support */
-#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 9115e25..1d8e13f 100644 (file)
--- a/include/configs/neo.h
+++ b/include/configs/neo.h
@@ -31,9 +31,6 @@
 #define PLLMR0_DEFAULT PLLMR0_266_133_66_33
 #define PLLMR1_DEFAULT PLLMR1_266_133_66_33
 
-/* new uImage format support */
-#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 3f26f9b..800426d 100644 (file)
--- a/include/image.h
+++ b/include/image.h
@@ -29,6 +29,7 @@ struct lmb;
 #define IMAGE_ENABLE_FIT       1
 #define IMAGE_ENABLE_OF_LIBFDT 1
 #define CONFIG_FIT_VERBOSE     1 /* enable fit_format_{error,warning}() */
+#define CONFIG_FIT_ENABLE_SHA256_SUPPORT
 
 #define IMAGE_ENABLE_IGNORE    0
 #define IMAGE_INDENT_STRING    ""
@@ -62,9 +63,6 @@ struct lmb;
 #  ifdef CONFIG_SPL_SHA1_SUPPORT
 #   define IMAGE_ENABLE_SHA1   1
 #  endif
-#  ifdef CONFIG_SPL_SHA256_SUPPORT
-#   define IMAGE_ENABLE_SHA256 1
-#  endif
 # else
 #  define CONFIG_CRC32         /* FIT images need CRC32 support */
 #  define CONFIG_SHA1          /* and SHA1 */
@@ -72,14 +70,8 @@ struct lmb;
 #  define IMAGE_ENABLE_CRC32   1
 #  define IMAGE_ENABLE_MD5     1
 #  define IMAGE_ENABLE_SHA1    1
-#  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
@@ -92,7 +84,11 @@ struct lmb;
 #define IMAGE_ENABLE_SHA1      0
 #endif
 
-#ifndef IMAGE_ENABLE_SHA256
+#if defined(CONFIG_FIT_ENABLE_SHA256_SUPPORT) || \
+       defined(CONFIG_SPL_SHA256_SUPPORT)
+#define CONFIG_SHA256
+#define IMAGE_ENABLE_SHA256    1
+#else
 #define IMAGE_ENABLE_SHA256    0
 #endif
 

diff --git a/scripts/config_whitelist.txt b/scripts/config_whitelist.txt
index fa9c3fc..4ed76f3 100644 (file)
--- a/scripts/config_whitelist.txt
+++ b/scripts/config_whitelist.txt
@@ -947,7 +947,6 @@ CONFIG_FFUART
 CONFIG_FILE
 CONFIG_FIRMWARE_OFFSET
 CONFIG_FIRMWARE_SIZE
-CONFIG_FIT_DISABLE_SHA256
 CONFIG_FIXED_PHY
 CONFIG_FIXED_PHY_ADDR
 CONFIG_FIXED_SDHCI_ALIGNED_BUFFER