On Friday, April 04, 2014 at 11:52:09 AM, Stefano Babic wrote:
Hi Marek,
On 03/04/2014 19:12, Marek Vasut wrote:
This patch adds the groundwork for generating signed BootStream, which can be used by the HAB library in i.MX28. We are adding a new target, u-boot-signed.sb , since the process for generating regular non-signed BootStream is much easier. Moreover, the signed bootstream depends on external _proprietary_ _binary-only_ tool from Freescale called 'cst', which is available only under NDA.
To make things even uglier, the CST or HAB mandates a kind-of circular dependency. The problem is, unlike the regular IVT, which is generated by mxsimage, the IVT for signed boot must be generated by hand here due to special demands of the CST. The U-Boot binary (or SPL binary) and IVT are then signed by the CST as a one block. But here is the problem. The size of the entire image (U-Boot, IVT, CST blocks) must be appended at the end of IVT. But the size of the entire image is not known until the CST has finished signing the U-Boot and IVT. We solve this by expecting the CST block to be always 3904B (which it is in case two files, U-Boot and the hand-made IVT, are signed in the CST block).
Signed-off-by: Marek Vasut marex@denx.de Cc: Stefano Babic sbabic@denx.de
Makefile | 2 + arch/arm/cpu/arm926ejs/mxs/Makefile | 60 ++++++++++++++++++++++++++ arch/arm/cpu/arm926ejs/mxs/mxsimage-signed.cfg | 10 +++++ 3 files changed, 72 insertions(+) create mode 100644 arch/arm/cpu/arm926ejs/mxs/mxsimage-signed.cfg
NOTE: Stefano, I had to tweak this to play well with kbuild.
ok - only to track what we have already discussed via IIRC.
The patch was already accepted, but it conflicts with current u-boot-arm. I revert it on u-boot-imx, and Marek rebased it.
Marek, I could not apply it directly after merging u-boot-arm - maybe because we set on different commit id. Never mind, I merge it again and it looks ok.
I have pushed a -test branch on u-boot-imx after merging u-boot-arm and your patches. It looks ok, and if you do not complain, I will send it to Albert for inclusion in u-boot-arm.
All good, thank you !
Best regards, Marek Vasut