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