| # ARC EM4 options |
| |
| # |
| # Copyright (c) 2014 Wind River Systems, Inc. |
| # |
| # SPDX-License-Identifier: Apache-2.0 |
| # |
| |
| choice |
| prompt "ARC SoC Selection" |
| depends on ARC |
| |
| source "arch/arc/soc/*/Kconfig.soc" |
| endchoice |
| |
| |
| menu "ARC Options" |
| depends on ARC |
| |
| config ARCH |
| default "arc" |
| |
| config ARCH_DEFCONFIG |
| string |
| default "arch/arc/defconfig" |
| |
| config CPU_HAS_MPU |
| bool |
| # Omit prompt to signify "hidden" option |
| default n |
| help |
| This option is enabled when the CPU has a Memory Protection Unit (MPU). |
| |
| config CPU_HAS_FPU |
| # Hidden config selected by CPU family |
| bool |
| default n |
| help |
| This option is enabled when the CPU has hardware floating point |
| unit. |
| |
| menu "ARC EM4 processor options" |
| |
| config CPU_ARCEM4 |
| bool |
| default y |
| select CPU_ARCV2 |
| select ATOMIC_OPERATIONS_C |
| help |
| This option signifies the use of an ARC EM4 CPU |
| |
| endmenu |
| |
| menu "ARCv2 Family Options" |
| |
| config CPU_ARCV2 |
| bool |
| default y |
| help |
| This option signifies the use of a CPU of the ARCv2 family. |
| |
| config DATA_ENDIANNESS_LITTLE |
| bool |
| default y |
| help |
| This is driven by the processor implementation, since it is fixed in |
| hardware. The BSP should set this value to 'n' if the data is |
| implemented as big endian. |
| |
| config NUM_IRQ_PRIO_LEVELS |
| int |
| prompt "Number of supported interrupt priority levels" |
| range 1 16 |
| help |
| Interrupt priorities available will be 0 to NUM_IRQ_PRIO_LEVELS-1. |
| The minimum value is 1. |
| |
| The BSP must provide a valid default for proper operation. |
| |
| config NUM_IRQS |
| int |
| prompt "Upper limit of interrupt numbers/IDs used" |
| range 17 256 |
| help |
| Interrupts available will be 0 to NUM_IRQS-1. |
| The minimum value is 17 as the first 16 entries in the vector |
| table are for CPU exceptions. |
| |
| The BSP must provide a valid default. This drives the size of the |
| vector table. |
| |
| config RGF_NUM_BANKS |
| int |
| prompt "Number of General Purpose Register Banks" |
| depends on CPU_ARCV2 |
| range 1 2 |
| default 2 |
| help |
| The ARC CPU can be configured to have more than one register |
| bank. If fast interrupts are supported (FIRQ), the 2nd |
| register bank, in the set, will be used by FIRQ interrupts. |
| If fast interrupts are supported but there is only 1 |
| register bank, the fast interrupt handler must save |
| and restore general purpose registers. |
| |
| config FIRQ_STACK_SIZE |
| int |
| prompt "Size of stack for FIRQs (in bytes)" |
| depends on CPU_ARCV2 |
| default 1024 |
| help |
| FIRQs and regular IRQs have different stacks so that a FIRQ can start |
| running without doing stack switching in software. |
| |
| config ARC_STACK_CHECKING |
| bool "Enable Stack Checking" |
| depends on CPU_ARCV2 |
| select THREAD_STACK_INFO |
| default n |
| help |
| ARCV2 has a special feature allowing to check stack overflows. This |
| enables code that allows using this debug feature |
| |
| config FAULT_DUMP |
| int |
| prompt "Fault dump level" |
| default 2 |
| range 0 2 |
| help |
| Different levels for display information when a fault occurs. |
| |
| 2: The default. Display specific and verbose information. Consumes |
| the most memory (long strings). |
| |
| 1: Display general and short information. Consumes less memory |
| (short strings). |
| |
| 0: Off. |
| |
| config IRQ_OFFLOAD |
| bool "Enable IRQ offload" |
| default n |
| help |
| Enable irq_offload() API which allows functions to be synchronously |
| run in interrupt context. Uses one entry in the IDT. Mainly useful |
| for test cases. |
| |
| config XIP |
| default n if NSIM |
| default y |
| |
| config GEN_ISR_TABLES |
| default y |
| |
| config GEN_IRQ_START_VECTOR |
| default 16 |
| |
| config HARVARD |
| prompt "Harvard Architecture" |
| bool |
| default n |
| help |
| The ARC CPU can be configured to have two busses; |
| one for instruction fetching and another that serves as a data bus. |
| |
| config CODE_DENSITY |
| prompt "Code Density Option" |
| bool |
| default n |
| help |
| Enbale code density option to get better code desntiy |
| |
| menu "Floating Point Options" |
| depends on CPU_HAS_FPU |
| |
| config FLOAT |
| bool |
| prompt "Floating point registers" |
| default n |
| help |
| This option allows tasks and fibers to use the floating point registers. |
| By default, only a single task or fiber may use the registers. |
| |
| Disabling this option means that any task or fiber that uses a |
| floating point register will get a fatal exception. |
| |
| config FP_SHARING |
| bool |
| prompt "Floating point register sharing" |
| depends on FLOAT |
| default n |
| help |
| This option allows multiple tasks and fibers to use the floating point |
| registers. |
| |
| endmenu |
| |
| config ICCM_SIZE |
| int "ICCM Size in kB" |
| help |
| This option specifies the size of the ICCM in kB. It is normally set by |
| the board's defconfig file and the user should generally avoid modifying |
| it via the menu configuration. |
| |
| config ICCM_BASE_ADDRESS |
| hex "ICCM Base Address" |
| help |
| This option specifies the base address of the ICCM on the board. It is |
| normally set by the board's defconfig file and the user should generally |
| avoid modifying it via the menu configuration. |
| |
| config DCCM_SIZE |
| int "DCCM Size in kB" |
| help |
| This option specifies the size of the DCCM in kB. It is normally set by |
| the board's defconfig file and the user should generally avoid modifying |
| it via the menu configuration. |
| |
| config DCCM_BASE_ADDRESS |
| hex "DCCM Base Address" |
| help |
| This option specifies the base address of the DCCM on the board. It is |
| normally set by the board's defconfig file and the user should generally |
| avoid modifying it via the menu configuration. |
| |
| config SRAM_SIZE |
| int "SRAM Size in kB" |
| help |
| This option specifies the size of the SRAM in kB. It is normally set by |
| the board's defconfig file and the user should generally avoid modifying |
| it via the menu configuration. |
| |
| config SRAM_BASE_ADDRESS |
| hex "SRAM Base Address" |
| help |
| This option specifies the base address of the SRAM on the board. It is |
| normally set by the board's defconfig file and the user should generally |
| avoid modifying it via the menu configuration. |
| |
| config FLASH_SIZE |
| int "Flash Size in kB" |
| help |
| This option specifies the size of the flash in kB. It is normally set by |
| the board's defconfig file and the user should generally avoid modifying |
| it via the menu configuration. |
| |
| config FLASH_BASE_ADDRESS |
| hex "Flash Base Address" |
| help |
| This option specifies the base address of the flash on the board. It is |
| normally set by the board's defconfig file and the user should generally |
| avoid modifying it via the menu configuration. |
| |
| config CACHE_LINE_SIZE_DETECT |
| bool |
| prompt "Detect d-cache line size at runtime" |
| default n |
| help |
| This option enables querying the d-cache build register for finding |
| the d-cache line size at the expense of taking more memory and code |
| and a slightly increased boot time. |
| |
| If the CPU's d-cache line size is known in advance, disable this |
| option and manually enter the value for CACHE_LINE_SIZE. |
| |
| config CACHE_LINE_SIZE |
| int |
| prompt "Cache line size" if !CACHE_LINE_SIZE_DETECT |
| default 32 |
| help |
| Size in bytes of a CPU d-cache line. |
| |
| Detect automatically at runtime by selecting CACHE_LINE_SIZE_DETECT. |
| |
| config ARCH_CACHE_FLUSH_DETECT |
| bool |
| default n |
| |
| config CACHE_FLUSHING |
| bool |
| default n |
| prompt "Enable d-cache flushing mechanism" |
| help |
| This links in the sys_cache_flush() function, which provides a |
| way to flush multiple lines of the d-cache. |
| If the d-cache is present, set this to y. |
| If the d-cache is NOT present, set this to n. |
| |
| endmenu |
| |
| source "arch/arc/soc/*/Kconfig" |
| |
| endmenu |
