| Sona Mathew | 0738421 | 2022-11-28 13:19:11 -0600 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2023, Arm Limited. All rights reserved. |
| 3 | * |
| 4 | * SPDX-License-Identifier: BSD-3-Clause |
| 5 | */ |
| 6 | |
| 7 | /* |
| 8 | * Definitions related to the Errata ABI feature |
| 9 | * as per the SMC Calling Convention. |
| 10 | */ |
| 11 | |
| 12 | #ifndef __ERRATA_ABI_H__ |
| 13 | #define __ERRATA_ABI_H__ |
| 14 | |
| 15 | #ifndef __ASSEMBLY__ |
| 16 | #include <stdbool.h> |
| 17 | #include <stdint.h> |
| 18 | #include <tftf_lib.h> |
| 19 | #include <platform_def.h> |
| 20 | #endif |
| 21 | |
| 22 | /******************************************************************************* |
| 23 | * Macro to create the array entry for EM_ABI_functions[] |
| 24 | ******************************************************************************/ |
| 25 | #define DEFINE_EM_FUNC(_func_id, _mandatory) \ |
| 26 | { EM_##_func_id, _mandatory, "SMC_" # _func_id } |
| 27 | |
| 28 | /******************************************************************************* |
| 29 | * Errata ABI feature supported function ids |
| 30 | ******************************************************************************/ |
| 31 | #define EM_VERSION 0x840000F0 |
| 32 | #define EM_FEATURES 0x840000F1 |
| 33 | #define EM_CPU_ERRATUM_FEATURES 0x840000F2 |
| 34 | |
| 35 | /* |
| 36 | * Number of EM ABI calls defined in the specification. |
| 37 | */ |
| 38 | #define TOTAL_ABI_CALLS (3U) |
| 39 | |
| Sona Mathew | 7bb1c84 | 2024-02-15 14:14:59 -0600 | [diff] [blame^] | 40 | #define ERRATA_COUNT (32U) |
| Sona Mathew | 0738421 | 2022-11-28 13:19:11 -0600 | [diff] [blame] | 41 | |
| 42 | typedef struct { |
| 43 | uint32_t id; |
| 44 | bool mandatory; |
| 45 | const char *str; |
| 46 | } em_function_t; |
| 47 | |
| 48 | typedef struct em_cpu_errata { |
| 49 | int em_errata_id; |
| 50 | unsigned int rxpx_low; |
| 51 | unsigned int rxpx_high; |
| 52 | } em_cpu_errata_t; |
| 53 | |
| 54 | typedef struct em_cpu{ |
| 55 | uint16_t cpu_pn; |
| 56 | em_cpu_errata_t cpu_errata[ERRATA_COUNT]; |
| 57 | }em_cpu_t; |
| 58 | |
| 59 | extern const em_function_t em_functions[TOTAL_ABI_CALLS]; |
| 60 | int32_t tftf_em_abi_version(void); |
| 61 | bool tftf_em_abi_feature_implemented(uint32_t id); |
| 62 | smc_ret_values tftf_em_abi_cpu_feature_implemented(uint32_t cpu_erratum, uint32_t forward_flag); |
| 63 | |
| 64 | |
| 65 | #define IN_RANGE(x, y, z) (((x >= y) && (x <= z)) ? true : false) |
| 66 | |
| 67 | /******************************************************************************* |
| 68 | * Errata ABI Version |
| 69 | ******************************************************************************/ |
| 70 | #define EM_MAJOR_VER_SHIFT (16) |
| 71 | #define EM_MAJOR_VER_MASK (0xFFFF) |
| 72 | #define EM_MINOR_VER_SHIFT (0) |
| 73 | #define EM_MINOR_VER_MASK (0xFFFF) |
| 74 | #define EM_ABI_VERSION(major, minor) (((major & EM_MAJOR_VER_MASK) << EM_MAJOR_VER_SHIFT) \ |
| 75 | | ((minor & EM_MINOR_VER_MASK) << EM_MINOR_VER_SHIFT)) |
| 76 | /******************************************************************************* |
| 77 | * Error codes |
| 78 | ******************************************************************************/ |
| 79 | #define EM_HIGHER_EL_MITIGATION (3) |
| 80 | #define EM_NOT_AFFECTED (2) |
| 81 | #define EM_AFFECTED (1) |
| 82 | #define EM_SUCCESS (0) |
| 83 | #define EM_NOT_SUPPORTED (-1) |
| 84 | #define EM_INVALID_PARAMETERS (-2) |
| 85 | #define EM_UNKNOWN_ERRATUM (-3) |
| 86 | #endif /* __ERRATA_ABI_H__ */ |
| 87 | |