1 /* SPDX-License-Identifier: GPL-2.0+ */
2 /*
3  * (C) Copyright 2016
4  * Texas Instruments, <www.ti.com>
5  *
6  * Andreas Dannenberg <dannenberg@ti.com>
7  */
8 #ifndef	_OMAP_SEC_COMMON_H_
9 #define	_OMAP_SEC_COMMON_H_
10 
11 /*
12  * Invoke secure ROM API on high-security (HS) device variants. It formats
13  * the variable argument list into the format expected by the ROM code before
14  * triggering the actual low-level smc entry.
15  */
16 u32 secure_rom_call(u32 service, u32 proc_id, u32 flag, ...);
17 
18 /*
19  * Invoke a secure ROM API on high-secure (HS) device variants that can be used
20  * to verify a secure blob by authenticating and optionally decrypting it. The
21  * exact operation performed depends on how the certificate that was embedded
22  * into the blob during the signing/encryption step when the secure blob was
23  * first created.
24  */
25 int secure_boot_verify_image(void **p_image, size_t *p_size);
26 
27 /*
28  * Return the start of secure reserved RAM, if a default start address has
29  * not been configured then return a region at the end of the external DRAM.
30  */
31 u32 get_sec_mem_start(void);
32 
33 /*
34  * Invoke a secure HAL API that allows configuration of the external memory
35  * firewall regions.
36  */
37 int secure_emif_firewall_setup(uint8_t region_num, uint32_t start_addr,
38 			       uint32_t size, uint32_t access_perm,
39 			       uint32_t initiator_perm);
40 
41 /*
42  * Invoke a secure HAL API on high-secure (HS) device variants that reserves a
43  * region of external memory for secure world use, and protects it using memory
44  * firewalls that prevent public world access. This API is intended to setaside
45  * memory that will be used for a secure world OS/TEE.
46  */
47 int secure_emif_reserve(void);
48 
49 /*
50  * Invoke a secure HAL API to lock the external memory firewall configurations.
51  * After this API is called, none of the HAL APIs for configuring the that
52  * firewall will be usable (calls to those APIs will return failure and have
53  * no effect).
54  */
55 int secure_emif_firewall_lock(void);
56 
57 /*
58  * Invoke a secure HAL API to authenticate and install a Trusted Execution
59  * Environment (TEE) image.
60  */
61 int secure_tee_install(u32 tee_image);
62 
63 #endif /* _OMAP_SEC_COMMON_H_ */
64