Patrick Delaunay 7ae22d7278 arm: stm32mp: bsec: add permanent lock support in bsec driver ... Add BSEC lock access (read / write) at 0xC0000000 offset of misc driver. The write access only available for Trusted boot mode, based on new SMC STM32_SMC_WRLOCK_OTP. With the fuse command, the permanent lock status is accessed with 0x10000000 offset (0xC0000000 - 0x8000000 for OTP sense/program divided by u32 size), for example: Read lock status of fuse 57 (0x39) STM32MP> fuse sense 0 0x10000039 1 Sensing bank 0: Word 0x10000039: 00000000 Set permanent lock of fuse 57 (0x39) STM32MP> fuse prog 0 0x10000039 1 Sensing bank 0: Word 0x10000039: 00000000 WARNING: the OTP lock is updated only after reboot WARING: Programming lock or fuses is an irreversible operation! This may brick your system. Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com> Acked-by: Patrice Chotard <patrice.chotard@st.com>		2020-03-24 14:05:35 +01:00
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mach	arm: stm32mp: bsec: add permanent lock support in bsec driver	2020-03-24 14:05:35 +01:00