[U-Boot] [PATCH v2 3/8] fit: add sha256 support

[Heiko Schocher <hs@denx.de>]

Hello Simon,

I was a little to fast with my answer ...

Am 17.02.2014 07:33, schrieb Heiko Schocher:
> Hello Simon,
>
> Am 15.02.2014 23:47, schrieb Simon Glass:
>> Hi Heiko,
>>
>> On 8 February 2014 22:34, Heiko Schocher<hs@denx.de> wrote:
>>> add sha256 support to fit images
>>>
>>> Signed-off-by: Heiko Schocher<hs@denx.de>
>>> Acked-by: Simon Glass<sjg@chromium.org>
>>
>> Sorry I spotted a few things since.
>
> No problem! Thanks for your review.
>
>>> ---
>>> changes for v2:
>>> - add Acked-by from Simon Glass
>>>
>>> common/image-fit.c | 5 +++++
>>> include/image.h | 9 +++++++++
>>> lib/sha256.c | 2 +-
>>> tools/Makefile | 3 +++
>>> 4 files changed, 18 insertions(+), 1 deletion(-)
>>>
> [...]
>>> diff --git a/include/image.h b/include/image.h
>>> index 7de2bb2..f001a5f 100644
>>> --- a/include/image.h
>>> +++ b/include/image.h
>>> @@ -57,13 +57,18 @@ 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_MD5 /* and MD5 */
>>> # define CONFIG_SHA1 /* and SHA1 */
>>> +# define CONFIG_SHA256 /* and SHA256 */
>>
>> Thinking about this again, I wonder if we want to force SHA256 to be
>> enabled when FIT is used? Should we just hold the existing
>> CONFIG_SHA256 setting in the board file and change:
>
> I can do this, but why are the others fix?

Hmm.. if I do this, mkimage does not work, as missing
this "IMAGE_ENABLE_SHA256" define ... I get the following
error message:

"Unsupported hash algorithm (sha256) for 'hash at 1' hash node in 'U-BOOT at 1' image node
tools/mkimage Can't add hashes to FIT blob"

I think, when compiling mkimage for the host, we have no board config
header availiable, as mkimage is not compiled (and not intent to be)
board specific ...

Seems that this is the reason, why the other algorithms are also
always enabled ...

bye,
Heiko
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