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Diffstat (limited to 'poky/documentation/ref-manual/variables.rst')
| -rw-r--r-- | poky/documentation/ref-manual/variables.rst | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/poky/documentation/ref-manual/variables.rst b/poky/documentation/ref-manual/variables.rst index 574af2c2f9..6ee65e1788 100644 --- a/poky/documentation/ref-manual/variables.rst +++ b/poky/documentation/ref-manual/variables.rst @@ -2898,6 +2898,26 @@ system and gives an overview of their function and contents. For guidance on how to create your own file permissions settings table file, examine the existing ``fs-perms.txt``. + :term:`FIT_ADDRESS_CELLS` + + Specifies the value of the ``#address-cells`` value for the + description of the kernel FIT image. + + The default value is set to "1" by the :ref:`ref-classes-kernel-fitimage` + class, which corresponds to 32 bit addresses. + + For platforms who need to set 64 bit addresses in + :term:`UBOOT_LOADADDRESS` and :term:`UBOOT_ENTRYPOINT`, you need to + set this value to "2", as two 32 bit values (cells) will be needed + to represent such addresses. + + Here is an example setting "0x400000000" as a load address:: + + FIT_ADDRESS_CELLS = "2" + UBOOT_LOADADDRESS= "0x04 0x00000000" + + See `more details about #address-cells <https://elinux.org/Device_Tree_Usage#How_Addressing_Works>`__. + :term:`FIT_CONF_DEFAULT_DTB` Specifies the default device tree binary (dtb) file for a fitImage when multiple are provided. @@ -9041,11 +9061,17 @@ system and gives an overview of their function and contents. creation, the :term:`UBOOT_ENTRYPOINT` variable is passed as a command-line parameter to the ``uboot-mkimage`` utility. + To pass a 64 bit address for FIT image creation, you will need to set + the :term:`FIT_ADDRESS_CELLS` variable too. + :term:`UBOOT_LOADADDRESS` Specifies the load address for the U-Boot image. During U-Boot image creation, the :term:`UBOOT_LOADADDRESS` variable is passed as a command-line parameter to the ``uboot-mkimage`` utility. + To pass a 64 bit address for FIT image creation, you will need to set + the :term:`FIT_ADDRESS_CELLS` variable too. + :term:`UBOOT_LOCALVERSION` Appends a string to the name of the local version of the U-Boot image. For example, assuming the version of the U-Boot image built |