From 45b55712d45150a810950aae84355e54c945cfcb Mon Sep 17 00:00:00 2001 From: Bryan O'Donoghue Date: Tue, 13 Mar 2018 16:50:35 +0000 Subject: image: Add IH_OS_TEE for TEE chain-load boot This patch adds a new type IH_OS_TEE. This new OS type will be used for chain-loading to Linux via a TEE. With this patch in-place you can generate a bootable OPTEE image like this: mkimage -A arm -T kernel -O tee -C none -d tee.bin uTee.optee where "tee.bin" is the input binary prefixed with an OPTEE header and uTee.optee is the output prefixed with a u-boot wrapper header. This image type "-T kernel -O tee" is differentiated from the existing IH_TYPE_TEE "-T tee" in that the IH_TYPE is installed by u-boot (flow control returns to u-boot) whereas for the new IH_OS_TEE control passes to the OPTEE firmware and the firmware chainloads onto Linux. Andrew Davis gave the following ASCII diagram: IH_OS_TEE: (mkimage -T kernel -O tee) Non-Secure Secure BootROM | ------------- | v SPL | v U-Boot ------> <----- OP-TEE | V Linux IH_TYPE_TEE: (mkimage -T tee) Non-Secure Secure BootROM | ------------- | v SPL -------> <----- OP-TEE | v U-Boot | V Linux Signed-off-by: Bryan O'Donoghue Suggested-by: Andrew F. Davis Cc: Harinarayan Bhatta Cc: Andrew F. Davis Cc: Tom Rini Cc: Kever Yang Cc: Philipp Tomsich Cc: Peng Fan Link: http://mrvan.github.io/optee-imx6ul --- common/image.c | 1 + 1 file changed, 1 insertion(+) (limited to 'common/image.c') diff --git a/common/image.c b/common/image.c index 9e850c0..f5278a0 100644 --- a/common/image.c +++ b/common/image.c @@ -100,6 +100,7 @@ static const table_entry_t uimage_os[] = { { IH_OS_OSE, "ose", "Enea OSE", }, { IH_OS_PLAN9, "plan9", "Plan 9", }, { IH_OS_RTEMS, "rtems", "RTEMS", }, + { IH_OS_TEE, "tee", "Trusted Execution Environment" }, { IH_OS_U_BOOT, "u-boot", "U-Boot", }, { IH_OS_VXWORKS, "vxworks", "VxWorks", }, #if defined(CONFIG_CMD_ELF) || defined(USE_HOSTCC) -- cgit v1.1