1 // SPDX-License-Identifier: BSD-2-Clause 2 /* 3 * Copyright 2019 Broadcom. 4 */ 5 6 #include <drivers/bcm/bnxt.h> 7 #include <io.h> 8 #include <kernel/pseudo_ta.h> 9 #include <mm/core_memprot.h> 10 #include <mm/core_mmu.h> 11 #include <string.h> 12 #include <trace.h> 13 14 #define ELOG_SERVICE_UUID \ 15 { 0x6272636D, 0x2019, 0x0701, \ 16 { 0x42, 0x43, 0x4D, 0x5F, 0x45, 0x4C, 0x4F, 0x47 } } 17 18 #define ELOG_TA_NAME "pta_bcm_elog.ta" 19 20 #define BCM_NITRO_FW_LOAD_ADDR 0x8ae00000 21 #define BCM_NITRO_CRASH_DUMP_BASE_ADDR 0x8b000000 22 23 /* Default ELOG buffer size 1MB */ 24 #define DEFAULT_ELOG_BUFFER_SIZE 0x100000U 25 26 /* 27 * Get Error log memory dump 28 * 29 * [out] memref[0]: Destination 30 * [in] value[1].a: Offset 31 */ 32 #define PTA_BCM_ELOG_CMD_GET_ELOG_MEM 1 33 34 /* 35 * Get nitro crash_dump memory 36 * 37 * [out] memref[0]: Destination 38 * [in] value[1].a: Offset 39 */ 40 #define PTA_BCM_ELOG_CMD_GET_NITRO_CRASH_DUMP 2 41 42 /* 43 * Load nitro firmware memory 44 * 45 * [in] memref[0]: Nitro f/w image data 46 * [in] value[1].a: Offset for loading f/w image 47 * [in] value[2].a: Firmware image size 48 */ 49 #define PTA_BCM_ELOG_CMD_LOAD_NITRO_FW 3 50 51 #define BCM_ELOG_GLOBAL_METADATA_SIG 0x45524c47 52 53 #define MAX_NITRO_CRASH_DUMP_MEM_SIZE 0x2000000 54 #define MAX_NITRO_FW_LOAD_MEM_SIZE 0x200000 55 56 /* Load Nitro fw image to SEC DDR memory */ 57 static TEE_Result pta_elog_load_nitro_fw(uint32_t param_types, 58 TEE_Param params[TEE_NUM_PARAMS]) 59 { 60 TEE_Result res = TEE_SUCCESS; 61 paddr_t src_paddr = BCM_NITRO_FW_LOAD_ADDR + BNXT_IMG_SECMEM_OFFSET; 62 vaddr_t src_vaddr = 0; 63 uint32_t offset = 0, sz = 0; 64 char *buf = NULL; 65 uint32_t exp_param_types = TEE_PARAM_TYPES(TEE_PARAM_TYPE_MEMREF_INPUT, 66 TEE_PARAM_TYPE_VALUE_INPUT, 67 TEE_PARAM_TYPE_VALUE_INPUT, 68 TEE_PARAM_TYPE_NONE); 69 70 if (exp_param_types != param_types) { 71 EMSG("Invalid Param types"); 72 return TEE_ERROR_BAD_PARAMETERS; 73 } 74 75 /* Check if firmware file size exceeds reserved memory size */ 76 if (params[2].value.a > MAX_NITRO_FW_LOAD_MEM_SIZE) { 77 EMSG("Invalid access"); 78 return TEE_ERROR_EXCESS_DATA; 79 } 80 81 offset = params[1].value.a; 82 83 /* 84 * Check if offset is within memory range reserved for nitro firmware 85 * minus default size of buffer 86 */ 87 if (offset > MAX_NITRO_FW_LOAD_MEM_SIZE - DEFAULT_ELOG_BUFFER_SIZE) { 88 EMSG("Invalid access"); 89 return TEE_ERROR_ACCESS_DENIED; 90 } 91 92 buf = params[0].memref.buffer; 93 sz = params[0].memref.size; 94 95 src_vaddr = (vaddr_t)phys_to_virt((uintptr_t)src_paddr + offset, 96 MEM_AREA_RAM_SEC, sz); 97 if (!src_vaddr) { 98 EMSG("Not enough memory mapped"); 99 return TEE_ERROR_BAD_PARAMETERS; 100 } 101 102 memcpy((char *)src_vaddr, buf, sz); 103 104 cache_op_inner(DCACHE_AREA_CLEAN, (void *)src_vaddr, sz); 105 106 return res; 107 } 108 109 static uint32_t get_dump_data(vaddr_t src, TEE_Param params[TEE_NUM_PARAMS]) 110 { 111 char *buf = NULL; 112 uint32_t sz = 0; 113 114 buf = params[0].memref.buffer; 115 sz = params[0].memref.size; 116 117 /* 118 * If request size exceeds default buf size 119 * override request size to default DEFAULT_ELOG_BUFFER_SIZE 120 */ 121 if (sz > DEFAULT_ELOG_BUFFER_SIZE) 122 sz = DEFAULT_ELOG_BUFFER_SIZE; 123 124 DMSG("buf %p sz 0x%x", buf, sz); 125 126 memcpy(buf, (char *)src, sz); 127 128 params[0].memref.size = sz; 129 130 return sz; 131 } 132 133 /* Copy nitro crash dump data */ 134 static TEE_Result pta_elog_nitro_crash_dump(uint32_t param_types, 135 TEE_Param params[TEE_NUM_PARAMS]) 136 { 137 TEE_Result res = TEE_SUCCESS; 138 paddr_t src_paddr = BCM_NITRO_CRASH_DUMP_BASE_ADDR; 139 vaddr_t src_vaddr = 0; 140 uint32_t offset = 0; 141 uint32_t exp_param_types = TEE_PARAM_TYPES(TEE_PARAM_TYPE_MEMREF_OUTPUT, 142 TEE_PARAM_TYPE_VALUE_INPUT, 143 TEE_PARAM_TYPE_NONE, 144 TEE_PARAM_TYPE_NONE); 145 uint32_t sz = 0; 146 147 if (exp_param_types != param_types) { 148 EMSG("Invalid Param types"); 149 return TEE_ERROR_BAD_PARAMETERS; 150 } 151 152 offset = params[1].value.a; 153 154 /* 155 * Check if offset is within memory range reserved for nitro crash dump 156 * minus default size of buffer 157 */ 158 if (offset > MAX_NITRO_CRASH_DUMP_MEM_SIZE - DEFAULT_ELOG_BUFFER_SIZE) { 159 EMSG("Invalid access"); 160 return TEE_ERROR_ACCESS_DENIED; 161 } 162 163 sz = MIN(params[0].memref.size, DEFAULT_ELOG_BUFFER_SIZE); 164 src_vaddr = (vaddr_t)phys_to_virt((uintptr_t)src_paddr + offset, 165 MEM_AREA_RAM_SEC, sz); 166 if (!src_vaddr) { 167 EMSG("Not enough memory mapped"); 168 return TEE_ERROR_BAD_PARAMETERS; 169 } 170 171 /* TODO : check if NITRO_CRASH_DUMP is available */ 172 173 cache_op_inner(DCACHE_AREA_INVALIDATE, (void *)src_vaddr, 174 DEFAULT_ELOG_BUFFER_SIZE); 175 176 get_dump_data(src_vaddr, params); 177 178 return res; 179 } 180 181 /* Copy soc error log data */ 182 static TEE_Result pta_elog_dump(uint32_t param_types, 183 TEE_Param params[TEE_NUM_PARAMS]) 184 { 185 TEE_Result res = TEE_SUCCESS; 186 paddr_t src_paddr = CFG_BCM_ELOG_BASE; 187 vaddr_t src_vaddr = 0; 188 uint32_t exp_param_types = TEE_PARAM_TYPES(TEE_PARAM_TYPE_MEMREF_OUTPUT, 189 TEE_PARAM_TYPE_VALUE_INPUT, 190 TEE_PARAM_TYPE_NONE, 191 TEE_PARAM_TYPE_NONE); 192 uint32_t sz = 0; 193 194 if (exp_param_types != param_types) { 195 EMSG("Invalid Param types"); 196 return TEE_ERROR_BAD_PARAMETERS; 197 } 198 199 sz = MIN(params[0].memref.size, DEFAULT_ELOG_BUFFER_SIZE); 200 src_vaddr = (vaddr_t)phys_to_virt(src_paddr, MEM_AREA_RAM_NSEC, sz); 201 if (!src_vaddr) { 202 EMSG("Not enough memory mapped"); 203 return TEE_ERROR_BAD_PARAMETERS; 204 } 205 206 /* Validate if Error logs are present */ 207 if ((*(uint32_t *)src_vaddr) != BCM_ELOG_GLOBAL_METADATA_SIG) { 208 EMSG("Elog Not setup"); 209 return TEE_ERROR_NOT_SUPPORTED; 210 } 211 212 get_dump_data(src_vaddr, params); 213 214 return res; 215 } 216 217 static TEE_Result invoke_command(void *session_context __unused, 218 uint32_t cmd_id, 219 uint32_t param_types, 220 TEE_Param params[TEE_NUM_PARAMS]) 221 { 222 TEE_Result res = TEE_SUCCESS; 223 224 DMSG("command entry point[%d] for \"%s\"", cmd_id, ELOG_TA_NAME); 225 226 switch (cmd_id) { 227 case PTA_BCM_ELOG_CMD_GET_ELOG_MEM: 228 res = pta_elog_dump(param_types, params); 229 break; 230 case PTA_BCM_ELOG_CMD_GET_NITRO_CRASH_DUMP: 231 res = pta_elog_nitro_crash_dump(param_types, params); 232 break; 233 case PTA_BCM_ELOG_CMD_LOAD_NITRO_FW: 234 res = pta_elog_load_nitro_fw(param_types, params); 235 break; 236 default: 237 EMSG("cmd: %d Not supported %s", cmd_id, ELOG_TA_NAME); 238 res = TEE_ERROR_NOT_SUPPORTED; 239 break; 240 } 241 242 return res; 243 } 244 245 pseudo_ta_register(.uuid = ELOG_SERVICE_UUID, 246 .name = ELOG_TA_NAME, 247 .flags = PTA_DEFAULT_FLAGS, 248 .invoke_command_entry_point = invoke_command); 249