1 // Copyright 2015 The Chromium OS Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 // THIS CODE IS GENERATED - DO NOT MODIFY! 6 7 #include "MemoryLib_fp.h" 8 #include "NV_Read_fp.h" 9 10 UINT16 NV_Read_Out_Marshal(NV_Read_Out* source, 11 TPMI_ST_COMMAND_TAG tag, 12 BYTE** buffer, 13 INT32* size) { 14 UINT16 total_size = 0; 15 UINT32 parameter_size = 0; 16 BYTE* parameter_size_location; 17 INT32 parameter_size_size = sizeof(UINT32); 18 UINT32 num_response_handles = 0; 19 // Add parameter_size=0 to indicate size of the parameter area. Will be 20 // replaced later by computed parameter_size. 21 if (tag == TPM_ST_SESSIONS) { 22 parameter_size_location = *buffer; 23 // Don't add to total_size, but increment *buffer and decrement *size. 24 UINT32_Marshal(¶meter_size, buffer, size); 25 } 26 // Marshal response parameters. 27 total_size += TPM2B_MAX_NV_BUFFER_Marshal(&source->data, buffer, size); 28 // Compute actual parameter_size. Don't add result to total_size. 29 if (tag == TPM_ST_SESSIONS) { 30 parameter_size = total_size - num_response_handles * sizeof(TPM_HANDLE); 31 UINT32_Marshal(¶meter_size, ¶meter_size_location, 32 ¶meter_size_size); 33 } 34 return total_size; 35 } 36 37 TPM_RC NV_Read_In_Unmarshal(NV_Read_In* target, 38 TPM_HANDLE request_handles[], 39 BYTE** buffer, 40 INT32* size) { 41 TPM_RC result = TPM_RC_SUCCESS; 42 // Get request handles from request_handles array. 43 target->authHandle = request_handles[0]; 44 target->nvIndex = request_handles[1]; 45 // Unmarshal request parameters. 46 result = UINT16_Unmarshal(&target->size, buffer, size); 47 if (result != TPM_RC_SUCCESS) { 48 return result; 49 } 50 result = UINT16_Unmarshal(&target->offset, buffer, size); 51 if (result != TPM_RC_SUCCESS) { 52 return result; 53 } 54 if ((result == TPM_RC_SUCCESS) && *size) { 55 result = TPM_RC_SIZE; 56 } 57 return result; 58 } 59 60 TPM_RC Exec_NV_Read(TPMI_ST_COMMAND_TAG tag, 61 BYTE** request_parameter_buffer, 62 INT32* request_parameter_buffer_size, 63 TPM_HANDLE request_handles[], 64 UINT32* response_handle_buffer_size, 65 UINT32* response_parameter_buffer_size) { 66 TPM_RC result = TPM_RC_SUCCESS; 67 NV_Read_In in; 68 NV_Read_Out out; 69 #ifdef TPM_CC_NV_Read 70 BYTE* response_buffer; 71 INT32 response_buffer_size; 72 UINT16 bytes_marshalled; 73 UINT16 num_response_handles = 0; 74 #endif 75 *response_handle_buffer_size = 0; 76 *response_parameter_buffer_size = 0; 77 // Unmarshal request parameters to input structure. 78 result = NV_Read_In_Unmarshal(&in, request_handles, request_parameter_buffer, 79 request_parameter_buffer_size); 80 if (result != TPM_RC_SUCCESS) { 81 return result; 82 } 83 // Execute command. 84 result = TPM2_NV_Read(&in, &out); 85 if (result != TPM_RC_SUCCESS) { 86 return result; 87 } 88 // Marshal output structure to global response buffer. 89 #ifdef TPM_CC_NV_Read 90 response_buffer = MemoryGetResponseBuffer(TPM_CC_NV_Read) + 10; 91 response_buffer_size = MAX_RESPONSE_SIZE - 10; 92 bytes_marshalled = 93 NV_Read_Out_Marshal(&out, tag, &response_buffer, &response_buffer_size); 94 *response_handle_buffer_size = num_response_handles * sizeof(TPM_HANDLE); 95 *response_parameter_buffer_size = 96 bytes_marshalled - *response_handle_buffer_size; 97 return TPM_RC_SUCCESS; 98 #endif 99 return TPM_RC_COMMAND_CODE; 100 } 101
