At this time there's no clear need to support anything other than the
A35T variant, but to simplify future extension show where the
partition size came from and document the corresponding parameter for
the A100T variant.
Signed-off-by: Peter A. Bigot <pab@pabigot.com>
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>
Refactor the ARM Cortex-M1 DesignStart FPGA/Digilent Arty A7 board
definition to prepare for Cortex-M3 support.
Signed-off-by: Henrik Brix Andersen <henrik@brixandersen.dk>
