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 #include <common.h> 12 13 /* 14 * Invoke secure ROM API on high-security (HS) device variants. It formats 15 * the variable argument list into the format expected by the ROM code before 16 * triggering the actual low-level smc entry. 17 */ 18 u32 secure_rom_call(u32 service, u32 proc_id, u32 flag, ...); 19 20 /* 21 * Invoke a secure ROM API on high-secure (HS) device variants that can be used 22 * to verify a secure blob by authenticating and optionally decrypting it. The 23 * exact operation performed depends on how the certificate that was embedded 24 * into the blob during the signing/encryption step when the secure blob was 25 * first created. 26 */ 27 int secure_boot_verify_image(void **p_image, size_t *p_size); 28 29 /* 30 * Return the start of secure reserved RAM, if a default start address has 31 * not been configured then return a region at the end of the external DRAM. 32 */ 33 u32 get_sec_mem_start(void); 34 35 /* 36 * Invoke a secure HAL API that allows configuration of the external memory 37 * firewall regions. 38 */ 39 int secure_emif_firewall_setup(uint8_t region_num, uint32_t start_addr, 40 uint32_t size, uint32_t access_perm, 41 uint32_t initiator_perm); 42 43 /* 44 * Invoke a secure HAL API on high-secure (HS) device variants that reserves a 45 * region of external memory for secure world use, and protects it using memory 46 * firewalls that prevent public world access. This API is intended to setaside 47 * memory that will be used for a secure world OS/TEE. 48 */ 49 int secure_emif_reserve(void); 50 51 /* 52 * Invoke a secure HAL API to lock the external memory firewall configurations. 53 * After this API is called, none of the HAL APIs for configuring the that 54 * firewall will be usable (calls to those APIs will return failure and have 55 * no effect). 56 */ 57 int secure_emif_firewall_lock(void); 58 59 /* 60 * Invoke a secure HAL API to authenticate and install a Trusted Execution 61 * Environment (TEE) image. 62 */ 63 int secure_tee_install(u32 tee_image); 64 65 #endif /* _OMAP_SEC_COMMON_H_ */ 66