On 25-03-11, Sascha Hauer wrote:
> This adds fip_sha256() to calculate a sha256 over a FIP image.
>
> Signed-off-by: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>
Reviewed-by: Marco Felsch <m.felsch@xxxxxxxxxxxxxx>
> ---
> include/fiptool.h | 3 +++
> lib/fip.c | 23 ++++++++++++++++++++++-
> 2 files changed, 25 insertions(+), 1 deletion(-)
>
> diff --git a/include/fiptool.h b/include/fiptool.h
> index bb63a79c16..73b0fbe398 100644
> --- a/include/fiptool.h
> +++ b/include/fiptool.h
> @@ -38,6 +38,7 @@ struct fip_state {
> size_t nr_image_descs;
> int verbose;
> void *buffer;
> + size_t bufsize;
> bool buf_no_free;
> };
>
> @@ -100,4 +101,6 @@ extern toc_entry_t plat_def_toc_entries[];
>
> struct fip_state *fip_image_open(const char *filename, size_t offset);
>
> +int fip_sha256(struct fip_state *fip, char *hash);
> +
> #endif /* FIPTOOL_H */
> diff --git a/lib/fip.c b/lib/fip.c
> index 8086b43412..7a5e3dc844 100644
> --- a/lib/fip.c
> +++ b/lib/fip.c
> @@ -24,6 +24,7 @@
> #include <libfile.h>
> #include <fs.h>
> #include <linux/kernel.h>
> +#include <digest.h>
>
> #include <fip.h>
> #include <fiptool.h>
> @@ -168,6 +169,7 @@ static int fip_do_parse_buf(struct fip_state *fip, void *buf, size_t size,
> int terminated = 0;
>
> fip->buffer = buf;
> + fip->bufsize = size;
>
> bufend = fip->buffer + size;
>
> @@ -570,10 +572,29 @@ struct fip_state *fip_image_open(const char *filename, size_t offset)
> close(fd);
>
> return fip_state;
> -
> err:
> close(fd);
> fip_free(fip_state);
>
> return ERR_PTR(ret);
> }
> +
> +int fip_sha256(struct fip_state *fip, char *hash)
> +{
> + struct digest *d;
> + int ret;
> +
> + d = digest_alloc_by_algo(HASH_ALGO_SHA256);
> + if (!d)
> + return -ENOSYS;
> +
> + digest_init(d);
> +
> + digest_update(d, fip->buffer, fip->bufsize);
> +
> + ret = digest_final(d, hash);
> +
> + digest_free(d);
> +
> + return ret;
> +}
>
> --
> 2.39.5
>
>
>
