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imx: hab: Add function to authenticate kernel image

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When loading kernel image, the image size is parsed from header, so it
does not include the CSF and IVT.

Add back the authenticate_image function to wrap the imx_hab_authenticate_image
with calculating IVT offset and full image size.

Signed-off-by: Ye Li <ye.li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
This commit is contained in:
Ye Li 2021-03-25 17:30:06 +08:00 committed by Stefano Babic
parent 55086e196e
commit c428ca80c2
1 changed files with 12 additions and 0 deletions
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12
arch/arm/mach-imx/hab.c
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@ -698,3 +698,15 @@ hab_authentication_exit:
return result; return result;
} }
int authenticate_image(u32 ddr_start, u32 raw_image_size)
{
u32 ivt_offset;
size_t bytes;
ivt_offset = (raw_image_size + ALIGN_SIZE - 1) &
~(ALIGN_SIZE - 1);
bytes = ivt_offset + IVT_SIZE + CSF_PAD_SIZE;
return imx_hab_authenticate_image(ddr_start, bytes, ivt_offset);
}