Commit 538968a7 authored by Neil Armstrong's avatar Neil Armstrong Committed by Christopher Friedt
Browse files

boards: fvp_base_revc_2xaemv8a: permit running Zephyr at EL1NS 



It may be needed to run Zephyr at EL1NS level with `CONFIG_ARMV8_A_NS`
In order to run at EL1NS, you'll need a proper Firmware loaded in the
FVP model to run Zephyr at non-secure EL3.

The ARM TF-A for FVP can used to run Zephyr as preloaded BL33.

This adds the necessary cmake scripts to load the TF-A binaries and
load Zephyr as preloaded BL33 payload.

Signed-off-by: default avatarNeil Armstrong <narmstrong@baylibre.com>
parent dc96f016

boards/arm64/fvp_base_revc_2xaemv8a/doc/index.rst

+23 −0
Original line number Diff line number Diff line
@@ -71,6 +71,29 @@ To run with FVP, ARMFVP_BIN_PATH must be set before running: 


e.g. export ARMFVP_BIN_PATH=<path/to/fvp/dir>



Running Zephyr at EL1NS

***********************



In order to run Zephyr as EL1NS with ``CONFIG_ARMV8_A_NS``, you'll need a proper

Trusted Firmware loaded in the FVP model.



The ARM TF-A for FVP can be used to run Zephyr as preloaded BL33 payload.



Checkout and Build the TF-A:



.. code-block:: console



   git clone https://git.trustedfirmware.org/TF-A/trusted-firmware-a.git --depth 1

   cd trusted-firmware-a/

   make PLAT=fvp PRELOADED_BL33_BASE="0x88000000" all fip



then export the ``ARMFVP_BL1_FILE` and ``ARMFVP_FIP_FILE`` environment variables:



.. code-block:: console



   export ARMFVP_BL1_FILE=<path/to/tfa-a/build/fvp/release/bl1.bin>

   export ARMFVP_FIP_FILE=<path/to/tfa-a/build/fvp/release/fip.bin>



Debugging

=========

cmake/emu/armfvp.cmake

+26 −1
Original line number Diff line number Diff line
@@ -10,11 +10,36 @@ find_program( 
  NAMES ${ARMFVP_BIN_NAME}

  )



if(CONFIG_ARMV8_A_NS)

  foreach(filetype BL1 FIP)

    if ((NOT DEFINED ARMFVP_${filetype}_FILE) AND (EXISTS "$ENV{ARMFVP_${filetype}_FILE}"))

      set(ARMFVP_${filetype}_FILE "$ENV{ARMFVP_${filetype}_FILE}" CACHE FILEPATH

        "ARM FVP ${filetype} File specified in environment"

	)

    endif()



    if(NOT EXISTS "${ARMFVP_${filetype}_FILE}")

      string(TOLOWER ${filetype} filename)

      message(FATAL_ERROR "Please specify ARMFVP_${filetype}_FILE in environment "

        "or with -DARMFVP_${filetype}_FILE=</path/to/${filename}.bin>")

    endif()

  endforeach()



  set(ARMFVP_FLAGS ${ARMFVP_FLAGS}

    -C bp.secureflashloader.fname=${ARMFVP_BL1_FILE}

    -C bp.flashloader0.fname=${ARMFVP_FIP_FILE}

    --data cluster0.cpu0="${APPLICATION_BINARY_DIR}/zephyr/${KERNEL_BIN_NAME}"@0x88000000

    )

else()

  set(ARMFVP_FLAGS ${ARMFVP_FLAGS}

    -a ${APPLICATION_BINARY_DIR}/zephyr/${KERNEL_ELF_NAME}

    )

endif()



add_custom_target(run

  COMMAND

  ${ARMFVP}

  ${ARMFVP_FLAGS}

  -a ${APPLICATION_BINARY_DIR}/zephyr/${KERNEL_ELF_NAME}

  DEPENDS ${ARMFVP} ${logical_target_for_zephyr_elf}

  WORKING_DIRECTORY ${APPLICATION_BINARY_DIR}

  COMMENT "FVP: ${ARMFVP}"

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