1 /* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */ 2 /* 3 * Copyright(c) 2021-2023 Intel Corporation 4 */ 5 #ifndef __iwl_fw_uefi__ 6 #define __iwl_fw_uefi__ 7 8 #define IWL_UEFI_OEM_PNVM_NAME L"UefiCnvWlanOemSignedPnvm" 9 #define IWL_UEFI_REDUCED_POWER_NAME L"UefiCnvWlanReducedPower" 10 #define IWL_UEFI_SGOM_NAME L"UefiCnvWlanSarGeoOffsetMapping" 11 #define IWL_UEFI_STEP_NAME L"UefiCnvCommonSTEP" 12 13 /* 14 * TODO: we have these hardcoded values that the caller must pass, 15 * because reading from the UEFI is not working. To implement this 16 * properly, we have to change iwl_pnvm_get_from_uefi() to call 17 * efivar_entry_size() and return the value to the caller instead. 18 */ 19 #define IWL_HARDCODED_PNVM_SIZE 4096 20 #define IWL_HARDCODED_REDUCE_POWER_SIZE 32768 21 #define IWL_HARDCODED_SGOM_SIZE 339 22 #define IWL_HARDCODED_STEP_SIZE 6 23 24 struct pnvm_sku_package { 25 u8 rev; 26 u32 total_size; 27 u8 n_skus; 28 u32 reserved[2]; 29 u8 data[]; 30 } __packed; 31 32 struct uefi_cnv_wlan_sgom_data { 33 u8 revision; 34 u8 offset_map[IWL_HARDCODED_SGOM_SIZE - 1]; 35 } __packed; 36 37 struct uefi_cnv_common_step_data { 38 u8 revision; 39 u8 step_mode; 40 u8 cnvi_eq_channel; 41 u8 cnvr_eq_channel; 42 u8 radio1; 43 u8 radio2; 44 } __packed; 45 46 /* 47 * This is known to be broken on v4.19 and to work on v5.4. Until we 48 * figure out why this is the case and how to make it work, simply 49 * disable the feature in old kernels. 50 */ 51 #ifdef CONFIG_EFI 52 void *iwl_uefi_get_pnvm(struct iwl_trans *trans, size_t *len); 53 u8 *iwl_uefi_get_reduced_power(struct iwl_trans *trans, size_t *len); 54 int iwl_uefi_reduce_power_parse(struct iwl_trans *trans, 55 const u8 *data, size_t len, 56 struct iwl_pnvm_image *pnvm_data); 57 void iwl_uefi_get_step_table(struct iwl_trans *trans); 58 #else /* CONFIG_EFI */ 59 static inline void *iwl_uefi_get_pnvm(struct iwl_trans *trans, size_t *len) 60 { 61 return ERR_PTR(-EOPNOTSUPP); 62 } 63 64 static inline int 65 iwl_uefi_reduce_power_parse(struct iwl_trans *trans, 66 const u8 *data, size_t len, 67 struct iwl_pnvm_image *pnvm_data) 68 { 69 return -EOPNOTSUPP; 70 } 71 72 static inline u8 * 73 iwl_uefi_get_reduced_power(struct iwl_trans *trans, size_t *len) 74 { 75 return ERR_PTR(-EOPNOTSUPP); 76 } 77 78 static inline void iwl_uefi_get_step_table(struct iwl_trans *trans) 79 { 80 } 81 #endif /* CONFIG_EFI */ 82 83 #if defined(CONFIG_EFI) && defined(CONFIG_ACPI) 84 void iwl_uefi_get_sgom_table(struct iwl_trans *trans, struct iwl_fw_runtime *fwrt); 85 #else 86 static inline 87 void iwl_uefi_get_sgom_table(struct iwl_trans *trans, struct iwl_fw_runtime *fwrt) 88 { 89 } 90 #endif 91 #endif /* __iwl_fw_uefi__ */ 92