| /* SPDX-License-Identifier: GPL-2.0+ */ |
| /* |
| * Simple API for configuring TrustZone memory regions |
| * |
| * The premise is that the desired TZC layout is known beforehand, and it can |
| * be configured in one step. tzc_configure() provides this functionality. |
| */ |
| #ifndef MACH_TZC_H |
| #define MACH_TZC_H |
| |
| #include <linux/types.h> |
| |
| enum tzc_sec_mode { |
| TZC_ATTR_SEC_NONE = 0, |
| TZC_ATTR_SEC_R = 1, |
| TZC_ATTR_SEC_W = 2, |
| TZC_ATTR_SEC_RW = 3 |
| }; |
| |
| struct tzc_region { |
| uintptr_t base; |
| uintptr_t top; |
| enum tzc_sec_mode sec_mode; |
| uint16_t nsec_id; |
| uint16_t filters_mask; |
| }; |
| |
| int tzc_configure(uintptr_t tzc, const struct tzc_region *cfg); |
| int tzc_disable_filters(uintptr_t tzc, uint16_t filters_mask); |
| int tzc_enable_filters(uintptr_t tzc, uint16_t filters_mask); |
| void tzc_dump_config(uintptr_t tzc); |
| |
| #endif /* MACH_TZC_H */ |
