developer | 880fb17 | 2022-09-05 19:08:59 +0800 | [diff] [blame] | 1 | /* |
Chungying Lu | 59c1c2b | 2023-04-25 15:39:10 +0800 | [diff] [blame] | 2 | * Copyright (c) 2022-2023, ARM Limited and Contributors. All rights reserved. |
developer | 880fb17 | 2022-09-05 19:08:59 +0800 | [diff] [blame] | 3 | * |
| 4 | * SPDX-License-Identifier: BSD-3-Clause |
| 5 | */ |
| 6 | |
| 7 | #include <common/debug.h> |
| 8 | #include <emi_mpu.h> |
Dawei Chien | 67611c8 | 2023-08-01 18:52:52 +0800 | [diff] [blame] | 9 | #include <mtk_sip_svc.h> |
| 10 | |
| 11 | #define MPU_PHYSICAL_ADDR_SHIFT_BITS (16) |
developer | 880fb17 | 2022-09-05 19:08:59 +0800 | [diff] [blame] | 12 | |
| 13 | void set_emi_mpu_regions(void) |
| 14 | { |
| 15 | /* TODO: set emi mpu region */ |
| 16 | INFO("%s, emi mpu is not setting currently\n", __func__); |
| 17 | } |
Chungying Lu | 59c1c2b | 2023-04-25 15:39:10 +0800 | [diff] [blame] | 18 | |
| 19 | int set_apu_emi_mpu_region(void) |
| 20 | { |
| 21 | struct emi_region_info_t region_info; |
| 22 | |
| 23 | region_info.start = (unsigned long long)APUSYS_SEC_BUF_PA; |
| 24 | region_info.end = (unsigned long long)(APUSYS_SEC_BUF_PA + APUSYS_SEC_BUF_SZ) - 1; |
| 25 | region_info.region = APUSYS_SEC_BUF_EMI_REGION; |
| 26 | |
| 27 | SET_ACCESS_PERMISSION(region_info.apc, UNLOCK, |
| 28 | FORBIDDEN, FORBIDDEN, FORBIDDEN, FORBIDDEN, |
| 29 | FORBIDDEN, FORBIDDEN, FORBIDDEN, FORBIDDEN, |
| 30 | NO_PROTECTION, FORBIDDEN, NO_PROTECTION, FORBIDDEN, |
| 31 | FORBIDDEN, FORBIDDEN, FORBIDDEN, SEC_RW); |
| 32 | |
| 33 | return emi_mpu_set_protection(®ion_info); |
| 34 | } |
Dawei Chien | 67611c8 | 2023-08-01 18:52:52 +0800 | [diff] [blame] | 35 | |
| 36 | static inline uint64_t get_decoded_phys_addr(uint64_t addr) |
| 37 | { |
| 38 | return (addr << MPU_PHYSICAL_ADDR_SHIFT_BITS); |
| 39 | } |
| 40 | |
| 41 | static inline uint32_t get_decoded_zone_id(uint32_t info) |
| 42 | { |
| 43 | return ((info & 0xFFFF0000) >> MPU_PHYSICAL_ADDR_SHIFT_BITS); |
| 44 | } |
| 45 | |
| 46 | int emi_mpu_optee_handler(uint64_t encoded_addr, uint64_t zone_size, |
| 47 | uint64_t zone_info) |
| 48 | { |
| 49 | uint64_t phys_addr = get_decoded_phys_addr(encoded_addr); |
| 50 | struct emi_region_info_t region_info; |
| 51 | enum MPU_REQ_ORIGIN_ZONE_ID zone_id = get_decoded_zone_id(zone_info); |
| 52 | |
| 53 | INFO("encoded_addr = 0x%lx, zone_size = 0x%lx, zone_info = 0x%lx\n", |
| 54 | encoded_addr, zone_size, zone_info); |
| 55 | |
| 56 | if (zone_id != MPU_REQ_ORIGIN_TEE_ZONE_SVP) { |
| 57 | ERROR("Invalid param %s, %d\n", __func__, __LINE__); |
| 58 | return MTK_SIP_E_INVALID_PARAM; |
| 59 | } |
| 60 | |
| 61 | /* SVP DRAM */ |
| 62 | region_info.start = phys_addr; |
| 63 | region_info.end = phys_addr + zone_size; |
| 64 | region_info.region = 4; |
| 65 | SET_ACCESS_PERMISSION(region_info.apc, 1, |
| 66 | FORBIDDEN, FORBIDDEN, FORBIDDEN, FORBIDDEN, |
| 67 | FORBIDDEN, FORBIDDEN, FORBIDDEN, FORBIDDEN, |
| 68 | FORBIDDEN, FORBIDDEN, FORBIDDEN, FORBIDDEN, |
| 69 | FORBIDDEN, FORBIDDEN, FORBIDDEN, SEC_RW); |
| 70 | |
| 71 | emi_mpu_set_protection(®ion_info); |
| 72 | |
| 73 | return 0; |
| 74 | } |