# Intel CAVS SoC family CMake file
#
# Copyright (c) 2020-2022 Intel Corporation
# SPDX-License-Identifier: Apache-2.0

zephyr_interface_library_named(INTEL_ADSP_COMMON)

zephyr_library_named(intel_adsp_common)
zephyr_library_include_directories(include)
zephyr_library_include_directories(${ZEPHYR_BASE}/drivers)

zephyr_library_sources(trace_out.c)
zephyr_library_sources_ifdef(CONFIG_CAVS_IPC ipc.c)

zephyr_library_sources(
    rimage_modules.c
    boot.c
    )

zephyr_library_sources_ifdef(CONFIG_CAVS_CLOCK clk.c)

if(CONFIG_SMP OR CONFIG_MP_NUM_CPUS GREATER 1)
  zephyr_library_sources(multiprocessing.c)
endif()

zephyr_library_sources_ifdef(CONFIG_CAVS_ICTL irq.c)

zephyr_library_link_libraries(INTEL_ADSP_COMMON)

target_include_directories(INTEL_ADSP_COMMON INTERFACE include)
target_link_libraries(INTEL_ADSP_COMMON INTERFACE intel_adsp_common)

set(ELF_FIX ${SOC_DIR}/${ARCH}/${SOC_FAMILY}/common/fix_elf_addrs.py)
set(KERNEL_REMAPPED ${CMAKE_BINARY_DIR}/zephyr/${KERNEL_NAME}-remapped.elf)
set(EXTMAN ${CMAKE_BINARY_DIR}/zephyr/extman.bin)

if(${CMAKE_HOST_WIN32})
    set(NULL_FILE nul)
elseif(${CMAKE_HOST_UNIX})
    set(NULL_FILE /dev/null)
endif()

# Generate rimage modules from the base kernel ELF file.  Note the
# warning squashing on the objcopy steps.  Binutils has a misfeature
# where if the copy removes all the sections from an input ELF program
# header (our link generates lots of phdrs because of the disjoint
# cacheability addresses), it will warn about an "empty" segment even
# though it was TOLD to drop the contents!
#
# Also note that rimage is picky with section flags: it will try to
# include a section in the output data (even its own metadata in
# .module!) if it has any of ALLOC, WRITABLE or EXEC flags in the ELF
# file.  The GNU linker will set these automatically based on the
# flags of the sections coming out of C code, so this is fragile and
# breaks easily.  Set noload flags explicitly here.
add_custom_target(
  gen_modules ALL
  DEPENDS ${ZEPHYR_FINAL_EXECUTABLE}

  # The .fw_metadata section may not be present (xcc's older linker
  # will remove it if empty).  Extract it here (which will create an
  # empty file if not present) and add it back when we generate the
  # main.mod file below.
  COMMAND ${CMAKE_OBJCOPY} -O binary --only-section=.fw_metadata
      ${CMAKE_BINARY_DIR}/zephyr/${KERNEL_NAME}.elf ${EXTMAN}

  # Remap uncached section addresses so they appear contiguous
  COMMAND ${CMAKE_COMMAND} -E
      copy ${CMAKE_BINARY_DIR}/zephyr/${KERNEL_NAME}.elf ${KERNEL_REMAPPED}

  COMMAND ${ELF_FIX} ${CMAKE_OBJCOPY} ${KERNEL_REMAPPED}
      ${CONFIG_XTENSA_CACHED_REGION} ${CONFIG_XTENSA_UNCACHED_REGION}

  # Extract modules for rimage
  COMMAND ${CMAKE_OBJCOPY}
      --only-section .imr
      --only-section .imrdata
      --only-section .module.boot
      --set-section-flags .module.boot=noload,readonly
      --rename-section .module.boot=.module
      ${KERNEL_REMAPPED} ${CMAKE_BINARY_DIR}/zephyr/boot.mod 2>${NULL_FILE}

  # Remove .fw_metadata here...
  COMMAND ${CMAKE_OBJCOPY}
      --remove-section .imr
      --remove-section .imrdata
      --remove-section .module.boot
      --remove-section .fw_metadata
      --set-section-flags .module.main=noload,readonly
      --set-section-flags .static_uuid_entries=noload,readonly
      --set-section-flags .static_log_entries=noload,readonly
      --rename-section .module.main=.module
      ${KERNEL_REMAPPED} ${CMAKE_BINARY_DIR}/zephyr/main.mod 2>${NULL_FILE}

  # ...and copy it back in
  COMMAND ${CMAKE_OBJCOPY}
      --add-section .fw_metadata=${EXTMAN}
      --set-section-flags .fw_metadata=noload,readonly
      ${CMAKE_BINARY_DIR}/zephyr/main.mod
      ${CMAKE_BINARY_DIR}/zephyr/main.mod 2>${NULL_FILE}
)