Re: [U-Boot] [U-Boot, v5, 1/2] spl: add support to booting with OP-TEE

OP-TEE is an open source trusted OS, in armv7, its loading and running are like this: loading:

• SPL load both OP-TEE and U-Boot

running:

• SPL run into OP-TEE in secure mode;
• OP-TEE run into U-Boot in non-secure mode;

To make code simple, it would be fine to use IH_OS_TEE for the os tyle in TPL(just like IH_OS_LINUX is using both in SPL and U-Boot).

Here is the diagram for SPL loading OP-TEE, IH_OS_TEE:(make u-boot.itb for SPL) Non-Secure Secure

                 BootROM
                   |
                   v
                  SPL
                   |
                   v
      ---------  OP-TEE
     |
     v
   U-Boot
     |
     V
   Linux

For other two king of OP-TEE loading/booting, see commit message: 45b55712d4 image: Add IH_OS_TEE for TEE chain-load boot

More detail: https://github.com/OP-TEE/optee_os and search for 'boot arguments' for detail entry parameter in: core/arch/arm/kernel/generic_entry_a32.S

Signed-off-by: Kever Yang kever.yang@rock-chips.com Cc: Bryan O'Donoghue bryan.odonoghue@linaro.org

---

Changes in v5:

• Split the patch out from rk3229 seris
• Use IH_OS_TEE instead of IH_OS_OP-TEE

Changes in v4:

• use NULL instead of '0'
• add fdt_addr as arg2 of entry

Changes in v2:

• Using new image type for op-tee

common/spl/Kconfig | 7 +++++++ common/spl/Makefile | 1 + common/spl/spl.c | 7 +++++++ common/spl/spl_optee.S | 12 ++++++++++++ include/spl.h | 13 +++++++++++++ 5 files changed, 40 insertions(+) create mode 100644 common/spl/spl_optee.S

Reviewed-by: Philipp Tomsich philipp.tomsich@theobroma-systems.com