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