4c57f3400a
The ARM Cortex-M1/M3 DesignStart FPGA reference designs support booting from an off-board, memory-mapped QSPI NOR flash device. The V2C DAPlink shield from ARM Ltd. provides support for this feature. If the board/shield is not configured for booting from the QSPI NOR device, that same device is available as a regular QSPI NOR flash device. The presense of a shield configured for QSPI NOR flash boot is indicated through an IRQ line used as a level-detect, non-interrupt signal. Introduce a board specific devicetree binding for the DAPLink QSPI MUX and provide a board specific API accessing it. Automatically set the QSPI MUX to to provide regular QSPI NOR flash access if the board/shield is not configured for memory-mapped QSPI NOR flash boot. Signed-off-by: Henrik Brix Andersen <henrik@brixandersen.dk>
14 lines
477 B
Plaintext
14 lines
477 B
Plaintext
# Digilent Arty board configuration
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# Copyright (c) 2020 Henrik Brix Andersen <henrik@brixandersen.dk>
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# SPDX-License-Identifier: Apache-2.0
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config BOARD_INIT_PRIORITY
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int "Board initialization priority"
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default 50
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depends on BOARD_ARTY_A7_ARM_DESIGNSTART_M1 || BOARD_ARTY_A7_ARM_DESIGNSTART_M3
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depends on "$(dt_nodelabel_enabled,daplink_qspi_mux)"
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help
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Board initialization priority. The board initialization must take
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place after the GPIO driver is initialized.
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