Nios II HAL alt_load()

Nios II Eclipse에서 bsp 프로젝트 아래에 summary.html이 하나 보이길래 열어보니 

해당 설정에 대한 내용이 나온다.

Setting Name: hal.linker.allow_code_at_reset Identifier: ALT_ALLOW_CODE_AT_RESET Default Value: 0 Value: 1 Type: Boolean Destination: none Description: Indicates if initialization code is allowed at the reset address. If true, defines the macro ALT_ALLOW_CODE_AT_RESET in linker.h. Restrictions: If true, defines the macro ALT_ALLOW_CODE_AT_RESET in linker.h. This setting is typically false if an external bootloader (e.g. flash bootloader) is present. Setting Name: hal.linker.enable_alt_load Identifier: none Default Value: 0 Value: 1 Type: Boolean Destination: none Description: Enables the alt_load() facility. The alt_load() facility copies data sections (.rodata, .rwdata, or .exceptions) from boot memory to RAM. If true, this setting sets up the VMA/LMA of sections in linker.x to allow them to be loaded into the .text memory. Restrictions: This setting is typically false if an external bootloader (e.g. flash bootloader) is present. Setting Name: hal.linker.enable_alt_load_copy_exceptions Identifier: none Default Value: 0 Value: 0 Type: Boolean Destination: none Description: Causes the alt_load() facility to copy the .exceptions section. If true, this setting defines the macro ALT_LOAD_COPY_EXCEPTIONS in linker.h. Restrictions: none Setting Name: hal.linker.enable_alt_load_copy_rodata Identifier: none Default Value: 0 Value: 0 Type: Boolean Destination: none Description: Causes the alt_load() facility to copy the .rodata section. If true, this setting defines the macro ALT_LOAD_COPY_RODATA in linker.h. Restrictions: none Setting Name: hal.linker.enable_alt_load_copy_rwdata Identifier: none Default Value: 0 Value: 1 Type: Boolean Destination: none Description: Causes the alt_load() facility to copy the .rwdata section. If true, this setting defines the macro ALT_LOAD_COPY_RWDATA in linker.h. Restrictions: none

일단 감이 안오니.. 프로젝트 전체로 검색해본결과

bsp/HAL/src/alt_load.c 에 해당 함수가 존재하고

alt_load.c의 alt_load()상단에 링커 정의 심볼이 존재한다.

extern alt_u32 __flash_rwdata_start __attribute__((section(".data"))); extern alt_u32 __ram_rwdata_start __attribute__((section(".data"))); extern alt_u32 __ram_rwdata_end __attribute__((section(".data"))); extern alt_u32 __flash_rodata_start __attribute__((section(".data"))); extern alt_u32 __ram_rodata_start __attribute__((section(".data"))); extern alt_u32 __ram_rodata_end __attribute__((section(".data"))); extern alt_u32 __flash_exceptions_start __attribute__((section(".data")));   extern alt_u32 __ram_exceptions_start __attribute__((section(".data"))); extern alt_u32 __ram_exceptions_end __attribute__((section(".data")));

음.. bsp 설정 바꾸고 bsp 빌드 하면 이런것도 재생성 되려나?

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해봤는데.. alt_load.c 내용이 바뀌진 않네.. 머지?