mirror of https://github.com/thesofproject/sof.git
50 lines
2.2 KiB
CMake
50 lines
2.2 KiB
CMake
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# Linker scripts generator
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# These linker scripts are based on those found in https://github.com/thesofproject/converged-sof-modules
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#
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# There are few things these scripts ensure:
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#
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# (1) Each module has its own reserved (virtual) address space. This is specified as
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# HPSRAM_ADDR in module's CMakeLists.txt and goes to memory_header_linker_script.txt.
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#
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# (2) .buildinfo section must be put at 0 offset of .text section. .buildinfo contains
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# module loadable libraries API version. That API version is verified by base FW.
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# Base FW accesses it simply as 0 offset from module's code.
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#
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# (3) .module section contains module manifest description. This section is used by
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# rimage to generate module manifest. Scripts ensure that this section is not garbage
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# collected by linker.
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# Required parameters MODULE and HPSRAM_ADDR should be specified in command line.
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if(NOT DEFINED MODULE)
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message(FATAL_ERROR "MODULE not defined")
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endif()
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if(NOT DEFINED HPSRAM_ADDR)
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message(FATAL_ERROR "HPSRAM_ADDR not defined")
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endif()
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# reserve space for manifest?
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math(EXPR HPSRAM "${HPSRAM_ADDR} + 9 * 4096" OUTPUT_FORMAT HEXADECIMAL)
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set(LDSCRIPTS_DIR ${MODULE}_ldscripts)
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set(LDSCRIPT_FILE ${LDSCRIPTS_DIR}/elf32xtensa.x)
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file(MAKE_DIRECTORY ${LDSCRIPTS_DIR})
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file(WRITE ${LDSCRIPT_FILE} "")
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file(APPEND ${LDSCRIPT_FILE} "INCLUDE ${CMAKE_CURRENT_BINARY_DIR}/${LDSCRIPTS_DIR}/memory_header_linker_script.txt\n")
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configure_file(
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${CMAKE_CURRENT_LIST_DIR}/ldscripts/memory_header_linker_script.txt.in
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${CMAKE_CURRENT_BINARY_DIR}/${LDSCRIPTS_DIR}/memory_header_linker_script.txt
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)
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file(APPEND ${LDSCRIPT_FILE} "INCLUDE ${CMAKE_CURRENT_LIST_DIR}/ldscripts/text_linker_script.txt\n")
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file(APPEND ${LDSCRIPT_FILE} "INCLUDE ${CMAKE_CURRENT_LIST_DIR}/ldscripts/common_text_linker_script.txt\n")
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file(APPEND ${LDSCRIPT_FILE} "INCLUDE ${CMAKE_CURRENT_LIST_DIR}/ldscripts/data_linker_script.txt\n")
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file(APPEND ${LDSCRIPT_FILE} "INCLUDE ${CMAKE_CURRENT_LIST_DIR}/ldscripts/common_rodata_linker_script.txt\n")
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file(APPEND ${LDSCRIPT_FILE} "INCLUDE ${CMAKE_CURRENT_LIST_DIR}/ldscripts/bss_linker_script.txt\n")
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file(APPEND ${LDSCRIPT_FILE} "INCLUDE ${CMAKE_CURRENT_LIST_DIR}/ldscripts/xt_linker_script.txt\n")
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file(APPEND ${LDSCRIPT_FILE} "INCLUDE ${CMAKE_CURRENT_LIST_DIR}/ldscripts/guard_linker_script.txt\n")
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