This series combines Marcos "i.MX6Q TZASC and OP-TEE early helpers" [1] and my series fixing chainloading barebox on OP-TEE enabled i.MX6ul platforms [2] into one.
Changes to Marcos series are: - rename imx6q_tzc380_is_enabled() to imx6q_tzc380_is_bypassed() as the function really only detects if the bypass bits are set correctly and not if the tzc380 is enabled. - Add i.MX6UL variants of the functions Marco created for i.MX6DQ - Marco created a mx6_start_optee_early() function that has a switch/case for the actual SoC type. I have split that into SoC specific functions so that we don't have to carry the binary weight when only one specific SoC is needed Changes to my series: - Ahmad mentioned in [3] that detecting if we are chainloaded based on a register passed from the 1st stage not robust and might have security issues. I am therefore now checking if the TZASC is accessible or not. As a special bonus this series brings us exception handling support in PBL for ARMv7/ARMv8. This done to implement data_abort_mask() which we need for the TZASC-is-accessible check, but will also be useful for debugging issues in the PBL. [1] https://lore.kernel.org/20250626144527.416697-1-m.fel...@pengutronix.de [2] https://lore.kernel.org/20250626140329.418033-1-s.ha...@pengutronix.de [3] https://lore.kernel.org/70b41f3b-4329-48f7-827f-1924e002a...@pengutronix.de Signed-off-by: Sascha Hauer <s.ha...@pengutronix.de> --- Changes in v2: - update some commit messages according to review - Drop patch to drop start_optee_early() - it's unused but referenced in the documentation - Add config symbol for TZASC and select it where necessary - Collect R-B from Ahmad, Marco - Link to v1: https://lore.barebox.org/20250627-arm-optee-early-helper-v1-0-4b098e8ac...@pengutronix.de --- Marco Felsch (5): ARM: i.MX6QDL: add imxcfg helper to configure the TZASC1/2 ARM: i.MX6Q: add imx6_get_mmdc_sdram_size ARM: mach-imx: tzasc: add region configure helpers ARM: mach-imx: tzasc: add imx6[q|ul]_tzc380_is_bypassed() ARM: optee-early: add mx6_start_optee_early helper Sascha Hauer (9): pbl: add panic_no_stacktrace() arch: Allow data_abort_mask() in PBL ARM: add exception handling support for PBL ARM: i.MX: add config symbol for TZASC ARM: mach-imx: tzasc: add imx6[q|ul]_tzc380_early_ns_region1() ARM: i.MX: add imx6_can_access_tzasc() ARM: i.MX: tqma6ulx: fix barebox chainloading with OP-TEE enabled ARM: i.MX: Webasto ccbv2: fix barebox chainloading with OP-TEE enabled ARM: i.MX: tqma6ulx: use ENTRY_FUNCTION_WITHSTACK Documentation/user/optee.rst | 22 ++- arch/Kconfig | 3 + arch/arm/Kconfig | 10 + arch/arm/boards/tqma6ulx/lowlevel.c | 27 +-- arch/arm/boards/webasto-ccbv2/lowlevel.c | 24 +-- arch/arm/cpu/Makefile | 1 + arch/arm/cpu/interrupts_32.c | 14 +- arch/arm/cpu/interrupts_64.c | 10 +- arch/arm/cpu/uncompress.c | 2 + arch/arm/include/asm/barebox-arm.h | 8 + arch/arm/lib/pbl.lds.S | 4 + arch/arm/lib32/optee-early.c | 42 ++++ arch/arm/mach-imx/Kconfig | 6 + arch/arm/mach-imx/Makefile | 2 +- arch/arm/mach-imx/esdctl.c | 5 + arch/arm/mach-imx/tzasc.c | 328 +++++++++++++++++++++++++++++++ include/abort.h | 3 +- include/mach/imx/esdctl.h | 1 + include/mach/imx/imx6q-tzasc.h | 8 + include/mach/imx/tzasc.h | 5 + include/tee/optee.h | 4 + pbl/misc.c | 3 + 22 files changed, 489 insertions(+), 43 deletions(-) --- base-commit: 796506e790596a0b59c186651cf98112eafe01c5 change-id: 20250627-arm-optee-early-helper-6d894df2201c Best regards, -- Sascha Hauer <s.ha...@pengutronix.de>
