76 lines
2.2 KiB
Plaintext
76 lines
2.2 KiB
Plaintext
# Digital Signal Processing (DSP) configuration options
|
|
|
|
# Copyright (c) 2022 Synopsys
|
|
# SPDX-License-Identifier: Apache-2.0
|
|
|
|
config ARC_HAS_DSP
|
|
bool
|
|
help
|
|
This option is enabled when the ARC CPU has hardware DSP unit.
|
|
|
|
menu "ARC DSP Options"
|
|
depends on ARC_HAS_DSP
|
|
|
|
config ARC_DSP
|
|
bool "digital signal processing (DSP)"
|
|
help
|
|
This option enables DSP and DSP instructions.
|
|
|
|
config ARC_DSP_TURNED_OFF
|
|
bool "Turn off DSP if it presents"
|
|
depends on !ARC_DSP
|
|
help
|
|
This option disables DSP block via resetting DSP_CRTL register.
|
|
|
|
config ARC_DSP_SHARING
|
|
bool "DSP register sharing"
|
|
depends on ARC_DSP && MULTITHREADING
|
|
select ARC_HAS_ACCL_REGS
|
|
help
|
|
This option enables preservation of the hardware DSP registers
|
|
across context switches to allow multiple threads to perform concurrent
|
|
DSP operations.
|
|
|
|
config ARC_DSP_BFLY_SHARING
|
|
bool "ARC complex DSP operation"
|
|
depends on ARC_DSP && CPU_ARCEM
|
|
help
|
|
This option is to enable Zephyr to store and restore DSP_BFLY0
|
|
and FFT_CTRL registers during context switch. This option is
|
|
only required when butterfly instructions are used in
|
|
multi-thread.
|
|
|
|
config ARC_XY_ENABLE
|
|
bool "ARC address generation unit registers"
|
|
help
|
|
Processors with XY memory and AGU registers can configure this
|
|
option to accelerate DSP instrctions.
|
|
|
|
config ARC_AGU_SHARING
|
|
bool "ARC address generation unit register sharing"
|
|
depends on ARC_XY_ENABLE && MULTITHREADING
|
|
default y if ARC_DSP_SHARING
|
|
help
|
|
This option enables preservation of the hardware AGU registers
|
|
across context switches to allow multiple threads to perform concurrent
|
|
operations on XY memory. Save and restore small size AGU registers is
|
|
set as default, including 4 address pointers regs, 2 address offset regs
|
|
and 4 modifiers regs.
|
|
|
|
config ARC_AGU_MEDIUM
|
|
bool "ARC AGU medium size register"
|
|
depends on ARC_AGU_SHARING
|
|
help
|
|
Save and restore medium AGU registers, including 8 address pointers regs,
|
|
4 address offset regs and 12 modifiers regs.
|
|
|
|
config ARC_AGU_LARGE
|
|
bool "ARC AGU large size register"
|
|
depends on ARC_AGU_SHARING
|
|
select ARC_AGU_MEDIUM
|
|
help
|
|
Save and restore large AGU registers, including 12 address pointers regs,
|
|
8 address offset regs and 24 modifiers regs.
|
|
|
|
endmenu
|