| /* |
| * Copyright (C) 2021 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef LIBXBC_H_ |
| #define LIBXBC_H_ |
| |
| // memcpy and strncmp |
| #include <common.h> |
| |
| /* |
| * Add a string of boot config parameters to memory appended by the trailer. |
| * This memory needs to be immediately following the end of the ramdisks. |
| * The new boot config trailer will be written to the end of the entire |
| * parameter section(previous + new). The trailer contains a 4 byte size of the |
| * parameters, followed by a 4 byte checksum of the parameters, followed by a 12 |
| * byte magic string. |
| * |
| * @param params pointer to string of boot config parameters |
| * @param params_size size of params string in bytes |
| * @param bootconfig_start_addr address that the boot config section is starting |
| * at in memory. |
| * @param bootconfig_size size of the current bootconfig section in bytes. |
| * @return number of bytes added to the boot config section. -1 for error. |
| */ |
| int addBootConfigParameters(char *params, uint32_t params_size, |
| uint64_t bootconfig_start_addr, |
| uint32_t bootconfig_size); |
| |
| /* |
| * Add the boot config trailer to the end of the boot config parameter section. |
| * This can be used after the vendor bootconfig section has been placed into |
| * memory if there are no additional parameters that need to be added. |
| * The new boot config trailer will be written to the end of the entire |
| * parameter section at (bootconfig_start_addr + bootconfig_size). |
| * The trailer contains a 4 byte size of the parameters, followed by a 4 byte |
| * checksum of the parameters, followed by a 12 byte magic string. |
| * |
| * @param bootconfig_start_addr address that the boot config section is starting |
| * at in memory. |
| * @param bootconfig_size size of the current bootconfig section in bytes. |
| * @return number of bytes added to the boot config section. -1 for error. |
| */ |
| int addBootConfigTrailer(uint64_t bootconfig_start_addr, |
| uint32_t bootconfig_size); |
| |
| #endif /* LIBXBC_H_ */ |