| # Digital Signal Processing (DSP) configuration options |
| |
| # Copyright (c) 2022 Synopsys |
| # SPDX-License-Identifier: Apache-2.0 |
| |
| menu "ARC DSP Options" |
| depends on CPU_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 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 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 |
