v5:
This patchset now works by making a bootable OPTEE image
mkimage -A arm -T kernel -O tee -C none -d tee.bin uTee.optee
The concept is the same as the earlier version of this patchset except instead of "mkimage -T tee" we do "mkimage -T kernel -O tee". Andrew suggested this and it is technically feasible.
So here is the revised patchset.
- Converted IH_TYPE_OPTEE to IH_OS_TEE - Andrew
- Removed Tested-by: for Peng Fan on patches with churn as a result
- Added patch for CONFIG_OPTEE_ADDR This CONFIG entry will be used in an upcoming set of patch for the board I'm working with.
v4: - New type "optee" renamed to "tee-bootable". We discussed making the namespace here more logical and obvious in another thread.
Kever may or may not end up adding "tee-combo".
This patchset will result in "tee" and "tee-bootable" being valid names. Since "tee" is an existing image type the name will be maintained. - Tom
- Added doc/README.trusted-execution-environment This gives a brief introduction on TEE plus some links to the spec and the op-tee website.
In then lays out the difference between these two types "tee" (tee-standalone) "tee-bootable"
- Bryan, Philipp
- Small change made to comment on existing TEE - Bryan
- Reworded the Kconfig option "OPTEE" Makes a little bit more sense to me re-reading now - Bryan
- Add patch to define CONFIG_OPTEE_LOAD_ADDR An upcoming set of patches for a board will make use of this define in an OPTEE context.
v3:
- Rework printout to be added at the end as opposed to churn over three separate patches - Andrew
- Reword patch 006 to better explain the thinking behind new image type - Andrew
v2: - Added CONFIG_OPTEE_TZDRAM_BASE instead of #ifndef OPTEE_TZDRAM_BASE as an error. - Tom Rini
- Added Tested-by: Peng Fan peng.fan@nxp.com - as indicated
- Added better explanation text to patch 6/9 "tools: mkimage: add optee image type"
- Fixed some checkpatch warnings in optee.c
v1: This series adds a new OPTEE bootable image type to u-boot, which is directly bootable with the bootm command.
There is already a TEE image type but, in this case the TEE firmware is loaded into RAM, jumped into and then back out of. This image type is a directly bootable image as described here : http://mrvan.github.io/optee-imx6ul
Instead of reusing the Linux bootable image type instead a new image type is defined, which allows us to perform additional image verification, prior to handing off control via bootm.
OPTEE images get linked to a specific address at compile time and must be loaded to this address too. This series extends out mkimage with a new image type that allows the OPTEE binary link location to be validated against CONFIG_OPTEE_TZDRAM_BASE and CONFIG_OPTEE_TZDRAM_SIZE respectively prior to proceeding through the bootm phase.
Once applied you can generate a bootable OPTEE image like this
mkimage -A arm -T optee -C none -d ./out/arm-plat-imx/core/tee.bin uTee.optee
That image can then be booted directly by bootm. bootm will verify the header contents of the OPTEE binary against the DRAM area carved out in u-boot. If the defined DRAM area does not match the link address specified we refuse to boot.
Kever - I'd like to suggest that your OPTEE SPL image takes a different image type IH_TYPE_OPTEE_SPL ? to indicate the different behavior your image type has versus a directly bootable bootm image.
Bryan O'Donoghue (10): optee: Add lib entries for sharing OPTEE code across ports optee: Add CONFIG_OPTEE_TZDRAM_SIZE optee: Add CONFIG_OPTEE_TZDRAM_BASE optee: Add CONFIG_OPTEE_LOAD_ADDR optee: Add optee_image_get_entry_point() optee: Add optee_image_get_load_addr() optee: Add optee_verify_bootm_image() optee: Add error printout image: Add IH_OS_TEE for TEE chain-load boot bootm: optee: Add a bootm command for type IH_OS_TEE
common/bootm_os.c | 32 +++++++++++++++++++++++++ common/image.c | 1 + include/image.h | 1 + include/tee/optee.h | 41 ++++++++++++++++++++++++++++++++ lib/Kconfig | 1 + lib/Makefile | 1 + lib/optee/Kconfig | 39 ++++++++++++++++++++++++++++++ lib/optee/Makefile | 7 ++++++ lib/optee/optee.c | 66 +++++++++++++++++++++++++++++++++++++++++++++++++++ tools/default_image.c | 15 ++++++++++-- 10 files changed, 202 insertions(+), 2 deletions(-) create mode 100644 lib/optee/Kconfig create mode 100644 lib/optee/Makefile create mode 100644 lib/optee/optee.c