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42 lines
1.5 KiB
Text
42 lines
1.5 KiB
Text
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# SPDX-License-Identifier: GPL-2.0
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#
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# Copyright (c) 2018, Luca Ceresoli <luca@lucaceresoli.net>
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if ARCH_ZYNQ || ARCH_ZYNQMP
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config XILINX_PS_INIT_FILE
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string "Zynq/ZynqMP PS init file(s) location"
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help
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On Zynq and ZynqMP U-Boot SPL (or U-Boot proper if
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ZYNQMP_PSU_INIT_ENABLED is set) is responsible for some
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basic initializations, such as enabling peripherals and
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configuring pinmuxes. The PS init file (called
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psu_init_gpl.c on ZynqMP, ps7_init_gpl.c for Zynq-7000)
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contains the code for such initializations.
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U-Boot contains PS init files for some boards, but each of
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them describes only one specific configuration. Users of a
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different board, or needing a different configuration, can
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generate custom files using the Xilinx development tools.
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There are three ways to give a PS init file to U-Boot:
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1. Set this variable to the path, either relative to the
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source tree or absolute, where the psu_init_gpl.c or
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ps7_init_gpl.c file is located. U-Boot will build this
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file.
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2. If you leave an empty string here, U-Boot will use
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board/xilinx/zynq/$(CONFIG_DEFAULT_DEVICE_TREE)/ps7_init_gpl.c
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for Zynq-7000, or
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board/xilinx/zynqmp/$(CONFIG_DEFAULT_DEVICE_TREE)/psu_init_gpl.c
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for ZynqMP.
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3. If the above file does not exist, U-Boot will use
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board/xilinx/zynq/ps7_init_gpl.c for Zynq-7000, or
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board/xilinx/zynqmp/psu_init_gpl.c for ZynqMP. This file
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is not provided by U-Boot, you have to copy it there
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before the build.
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endif
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