[cbootimage PATCH 1/2] autogen.sh: allow spaced in configure arguments

[cbootimage PATCH 1/2] autogen.sh: allow spaced in configure arguments

[Stephen Warren]

From: Stephen Warren <swarren-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>

Using "$@" (rather than #@) quotes any arguments if required. This is
useful if you want to run ./autogen.sh CFLAGS="-ggdb -O0".

Signed-off-by: Stephen Warren <swarren-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
---
 autogen.sh | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/autogen.sh b/autogen.sh
index e925023..530783b 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -1,5 +1,4 @@
 #!/bin/sh -e
 
 autoreconf --install --symlink
-./configure $@
-
+./configure "$@"
-- 
1.8.1.5

[cbootimage PATCH 2/2] crypto: produce consistent hash for zero-length data

[Stephen Warren]

From: Stephen Warren <swarren-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>

In real-world use-cases, hashing zero-length data likely never happens.
However, it is relevant when testing cbootimage with a dummy zero-length
bootloader binary, e.g.:

touch u-boot.bin
cbootimage -t30 ../tamonten-ng/tegra30.img.cfg tegra30-tec-ng.img

In this scenario, it's useful to create a consistent hash, so that one
can compare the resultant images before and after applying patches, to
check for regressions.

Signed-off-by: Stephen Warren <swarren-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
---
 src/crypto.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/crypto.c b/src/crypto.c
index 88de357..9741785 100644
--- a/src/crypto.c
+++ b/src/crypto.c
@@ -183,6 +183,9 @@ sign_objext(
 	if (enable_debug_crypto)
 		print_vector("K1", KEY_LENGTH, k1);
 
+	if (!num_aes_blocks)
+		memset(dst, 0, 4 * NVAES_STATECOLS);
+
 	/* compute the AES-CMAC value */
 	for (i = 0; i < num_aes_blocks; i++) {
 		/* Apply the chain data */
-- 
1.8.1.5

Re: [cbootimage PATCH 2/2] crypto: produce consistent hash for zero-length data

[Thierry Reding]

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On Fri, Aug 23, 2013 at 12:56:02PM -0600, Stephen Warren wrote:
> From: Stephen Warren <swarren-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
> 
> In real-world use-cases, hashing zero-length data likely never happens.
> However, it is relevant when testing cbootimage with a dummy zero-length
> bootloader binary, e.g.:
> 
> touch u-boot.bin
> cbootimage -t30 ../tamonten-ng/tegra30.img.cfg tegra30-tec-ng.img
> 
> In this scenario, it's useful to create a consistent hash, so that one
> can compare the resultant images before and after applying patches, to
> check for regressions.
> 
> Signed-off-by: Stephen Warren <swarren-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
> ---
>  src/crypto.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/src/crypto.c b/src/crypto.c
> index 88de357..9741785 100644
> --- a/src/crypto.c
> +++ b/src/crypto.c
> @@ -183,6 +183,9 @@ sign_objext(
>  	if (enable_debug_crypto)
>  		print_vector("K1", KEY_LENGTH, k1);
>  
> +	if (!num_aes_blocks)
> +		memset(dst, 0, 4 * NVAES_STATECOLS);
> +

Perhaps it would be better to zero out the memory after allocating it in
sign_bct()? Or alternatively use:

	hash_buffer = calloc(1, hash_size);

That way you're sure to get the size right and don't have to hardcode
it. The above patch will only work as long as the hash size across SoCs
remains the same.

Thierry

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Re: [cbootimage PATCH 1/2] autogen.sh: allow spaced in configure arguments

[Thierry Reding]

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On Fri, Aug 23, 2013 at 12:56:01PM -0600, Stephen Warren wrote:
> From: Stephen Warren <swarren-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>

s/spaced/spaces/ in the patch subject?

Otherwise:

Reviewed-by: Thierry Reding <treding-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>

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Re: [cbootimage PATCH 1/2] autogen.sh: allow spaced in configure arguments

[Stephen Warren]

On 08/26/2013 01:52 AM, Thierry Reding wrote:
> On Fri, Aug 23, 2013 at 12:56:01PM -0600, Stephen Warren wrote:
>> From: Stephen Warren <swarren-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
> 
> s/spaced/spaces/ in the patch subject?

Sigh. Guess I need to pay more attention too:-)

> Otherwise:
> 
> Reviewed-by: Thierry Reding <treding-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>

Thanks. I've pushed this one patch out with the subject fixed.