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nuttx/boards/z80/ez80/z20x/Kconfig

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boards/z80/ez80/z20x: Initial port to z20x board. The Z20X is a simple expandable DIY computing system, built around the eZ80 microprocessor. Reference: https://z20x.computer
2020-02-21 15:10:54 +01:00
#
# For a description of the syntax of this configuration file,
# see the file kconfig-language.txt in the NuttX tools repository.
#
if ARCH_BOARD_Z20X
boards/z80/ez80/z20x/: Add W25 bootloader The SD boot loader was not satisfactory because 1) the SD slot is on an optional board and, hence, cannot be part of a fundamental solution. And 2) it is too big. The only storage on borard is the Winbond W25 SPI-bsed FLASH. This commit adds support for a bootload to 1) read code in HEX format from a serial port and write it to the W25 FLASH, or 2) read code in binary form from the W25 FLASH into SRAM and execute the loaded program. boards/z80/ez80/z20x/configs: Added w25boot configuration boards/z80/ez80/z20x/src: Add bootloader logic, w25_main.c. Add logic to manage shared SRAM memory map so that the loaded program does not clobber the bootloader memory. Add logic to recover the bootloader memory into the heap after the loaded program as started. boards/z80/ez80/z20x/scripts: Rework scripts and configuration to support a bootloader and program build. The boolloader cannot use all of SRAM; the program must not clobber the SRAM region used by the bootloader.
2020-03-01 18:30:08 +01:00
choice
prompt "Build selection"
default Z20X_PROGRAM
config Z20X_SDBOOT
bool "SD boot loader"
select LIB_HEX2BIN
z20X: Continued development of the W25 Bootloader. Kconfig files. Repartition some functionality. Bootloader support will need to be provided in logic under arch/z80/src/ez80 so the critical configuration selections were moved the Kconfig file there. arch/z80/src/ez80/ez80_i2c.h: Rename arch/z80/src/ez80/ez80f91_i2c.h. It is sharable by both ez80f91 and ez80f92. arch/z80/src/ez80/: Add logic to perform an additional level of interrupt redirection. This is necessary because the the interrupt handling is part of the loader FLASH-based logic. In order to share interrupts with the program loaded into RAM by the loader, another layer or redirection is required to get control to the interrupt handlers in the loaded program. See ez809f2_loader.asm and ez80f92_program.asm boards/z80/ez80/z20x/scripts: Reduce size of the interrupt re-direction buffer from 1Kb to 512b.
2020-03-03 18:02:43 +01:00
select EZ80_BOOTLOADER
boards/z80/ez80/z20x/: Add W25 bootloader The SD boot loader was not satisfactory because 1) the SD slot is on an optional board and, hence, cannot be part of a fundamental solution. And 2) it is too big. The only storage on borard is the Winbond W25 SPI-bsed FLASH. This commit adds support for a bootload to 1) read code in HEX format from a serial port and write it to the W25 FLASH, or 2) read code in binary form from the W25 FLASH into SRAM and execute the loaded program. boards/z80/ez80/z20x/configs: Added w25boot configuration boards/z80/ez80/z20x/src: Add bootloader logic, w25_main.c. Add logic to manage shared SRAM memory map so that the loaded program does not clobber the bootloader memory. Add logic to recover the bootloader memory into the heap after the loaded program as started. boards/z80/ez80/z20x/scripts: Rework scripts and configuration to support a bootloader and program build. The boolloader cannot use all of SRAM; the program must not clobber the SRAM region used by the bootloader.
2020-03-01 18:30:08 +01:00
depends on EZ80_SPI && MMCSD_SPI
---help---
Select this option only with the boards/z20x/sdboot
configuration. This will enable the components needed only by the
boot loader.
config Z20X_W25BOOT
bool "W25 boot loader"
select Z20X_W25_CHARDEV
select LIB_HEX2BIN
z20X: Continued development of the W25 Bootloader. Kconfig files. Repartition some functionality. Bootloader support will need to be provided in logic under arch/z80/src/ez80 so the critical configuration selections were moved the Kconfig file there. arch/z80/src/ez80/ez80_i2c.h: Rename arch/z80/src/ez80/ez80f91_i2c.h. It is sharable by both ez80f91 and ez80f92. arch/z80/src/ez80/: Add logic to perform an additional level of interrupt redirection. This is necessary because the the interrupt handling is part of the loader FLASH-based logic. In order to share interrupts with the program loaded into RAM by the loader, another layer or redirection is required to get control to the interrupt handlers in the loaded program. See ez809f2_loader.asm and ez80f92_program.asm boards/z80/ez80/z20x/scripts: Reduce size of the interrupt re-direction buffer from 1Kb to 512b.
2020-03-03 18:02:43 +01:00
select EZ80_BOOTLOADER
boards/z80/ez80/z20x/: Add W25 bootloader The SD boot loader was not satisfactory because 1) the SD slot is on an optional board and, hence, cannot be part of a fundamental solution. And 2) it is too big. The only storage on borard is the Winbond W25 SPI-bsed FLASH. This commit adds support for a bootload to 1) read code in HEX format from a serial port and write it to the W25 FLASH, or 2) read code in binary form from the W25 FLASH into SRAM and execute the loaded program. boards/z80/ez80/z20x/configs: Added w25boot configuration boards/z80/ez80/z20x/src: Add bootloader logic, w25_main.c. Add logic to manage shared SRAM memory map so that the loaded program does not clobber the bootloader memory. Add logic to recover the bootloader memory into the heap after the loaded program as started. boards/z80/ez80/z20x/scripts: Rework scripts and configuration to support a bootloader and program build. The boolloader cannot use all of SRAM; the program must not clobber the SRAM region used by the bootloader.
2020-03-01 18:30:08 +01:00
depends on EZ80_SPI && MTD_W25
---help---
Select this option only with the boards/z20x/w25boot
configuration. This will enable the components needed only by the
boot loader.
config Z20X_PROGRAM
bool "Loadable program"
z20X: Continued development of the W25 Bootloader. Kconfig files. Repartition some functionality. Bootloader support will need to be provided in logic under arch/z80/src/ez80 so the critical configuration selections were moved the Kconfig file there. arch/z80/src/ez80/ez80_i2c.h: Rename arch/z80/src/ez80/ez80f91_i2c.h. It is sharable by both ez80f91 and ez80f92. arch/z80/src/ez80/: Add logic to perform an additional level of interrupt redirection. This is necessary because the the interrupt handling is part of the loader FLASH-based logic. In order to share interrupts with the program loaded into RAM by the loader, another layer or redirection is required to get control to the interrupt handlers in the loaded program. See ez809f2_loader.asm and ez80f92_program.asm boards/z80/ez80/z20x/scripts: Reduce size of the interrupt re-direction buffer from 1Kb to 512b.
2020-03-03 18:02:43 +01:00
select EZ80_PROGRAM
boards/z80/ez80/z20x/: Add W25 bootloader The SD boot loader was not satisfactory because 1) the SD slot is on an optional board and, hence, cannot be part of a fundamental solution. And 2) it is too big. The only storage on borard is the Winbond W25 SPI-bsed FLASH. This commit adds support for a bootload to 1) read code in HEX format from a serial port and write it to the W25 FLASH, or 2) read code in binary form from the W25 FLASH into SRAM and execute the loaded program. boards/z80/ez80/z20x/configs: Added w25boot configuration boards/z80/ez80/z20x/src: Add bootloader logic, w25_main.c. Add logic to manage shared SRAM memory map so that the loaded program does not clobber the bootloader memory. Add logic to recover the bootloader memory into the heap after the loaded program as started. boards/z80/ez80/z20x/scripts: Rework scripts and configuration to support a bootloader and program build. The boolloader cannot use all of SRAM; the program must not clobber the SRAM region used by the bootloader.
2020-03-01 18:30:08 +01:00
---help---
Normal program that resides on SD card or in W25 FLASH and is
loaded into RAM by a bootloader.
config Z20X_STANDALONE
bool "Standalone FLASH progroam"
select BOOT_RUNFROMFLASH
---help---
Select this option only to build a small program that executes
from z20x FLASH memory.
boards/z80/ez80/z20x: Initial port to z20x board. The Z20X is a simple expandable DIY computing system, built around the eZ80 microprocessor. Reference: https://z20x.computer
2020-02-21 15:10:54 +01:00
config Z20X_COPYTORAM
bool "Copy to RAM"
boards/z80/ez80/z20x/: Add W25 bootloader The SD boot loader was not satisfactory because 1) the SD slot is on an optional board and, hence, cannot be part of a fundamental solution. And 2) it is too big. The only storage on borard is the Winbond W25 SPI-bsed FLASH. This commit adds support for a bootload to 1) read code in HEX format from a serial port and write it to the W25 FLASH, or 2) read code in binary form from the W25 FLASH into SRAM and execute the loaded program. boards/z80/ez80/z20x/configs: Added w25boot configuration boards/z80/ez80/z20x/src: Add bootloader logic, w25_main.c. Add logic to manage shared SRAM memory map so that the loaded program does not clobber the bootloader memory. Add logic to recover the bootloader memory into the heap after the loaded program as started. boards/z80/ez80/z20x/scripts: Rework scripts and configuration to support a bootloader and program build. The boolloader cannot use all of SRAM; the program must not clobber the SRAM region used by the bootloader.
2020-03-01 18:30:08 +01:00
select BOOT_RUNFROMEXTSRAM
boards/z80/ez80/z20x: Initial port to z20x board. The Z20X is a simple expandable DIY computing system, built around the eZ80 microprocessor. Reference: https://z20x.computer
2020-02-21 15:10:54 +01:00
---help---
This option is available only when running from external SRAM
(CONFIG_BOOT_RUNFROMEXTSRAM). In that case there are two possible
options: (1) The configuration runs entirely out of SRAM and must
be copied into SRAM by a boot loader. Or (2) The configuration
boots out of FLASH, copies itself to SRAM, and runs from SRAM. This
configuration setting selects that latter option.
boards/z80/ez80/z20x/: Add W25 bootloader The SD boot loader was not satisfactory because 1) the SD slot is on an optional board and, hence, cannot be part of a fundamental solution. And 2) it is too big. The only storage on borard is the Winbond W25 SPI-bsed FLASH. This commit adds support for a bootload to 1) read code in HEX format from a serial port and write it to the W25 FLASH, or 2) read code in binary form from the W25 FLASH into SRAM and execute the loaded program. boards/z80/ez80/z20x/configs: Added w25boot configuration boards/z80/ez80/z20x/src: Add bootloader logic, w25_main.c. Add logic to manage shared SRAM memory map so that the loaded program does not clobber the bootloader memory. Add logic to recover the bootloader memory into the heap after the loaded program as started. boards/z80/ez80/z20x/scripts: Rework scripts and configuration to support a bootloader and program build. The boolloader cannot use all of SRAM; the program must not clobber the SRAM region used by the bootloader.
2020-03-01 18:30:08 +01:00
endchoice
config Z20X_W25_PROGSIZE
int "W25 partition size"
default 262144
range 131072 524288
depends on Z20X_W25BOOT
boards/z80/ez80/z20x: Initial port to z20x board. The Z20X is a simple expandable DIY computing system, built around the eZ80 microprocessor. Reference: https://z20x.computer
2020-02-21 15:10:54 +01:00
---help---
boards/z80/ez80/z20x/: Add W25 bootloader The SD boot loader was not satisfactory because 1) the SD slot is on an optional board and, hence, cannot be part of a fundamental solution. And 2) it is too big. The only storage on borard is the Winbond W25 SPI-bsed FLASH. This commit adds support for a bootload to 1) read code in HEX format from a serial port and write it to the W25 FLASH, or 2) read code in binary form from the W25 FLASH into SRAM and execute the loaded program. boards/z80/ez80/z20x/configs: Added w25boot configuration boards/z80/ez80/z20x/src: Add bootloader logic, w25_main.c. Add logic to manage shared SRAM memory map so that the loaded program does not clobber the bootloader memory. Add logic to recover the bootloader memory into the heap after the loaded program as started. boards/z80/ez80/z20x/scripts: Rework scripts and configuration to support a bootloader and program build. The boolloader cannot use all of SRAM; the program must not clobber the SRAM region used by the bootloader.
2020-03-01 18:30:08 +01:00
This is the size of the partition at the beginning to the W25
serial FLASH that will be used to hold the boot program. Since
this program must run from SRAM, there would be no purpose int
making this size any larger than the size of the internal SRAM.
boards/z80/ez80/z20x: Initial port to z20x board. The Z20X is a simple expandable DIY computing system, built around the eZ80 microprocessor. Reference: https://z20x.computer
2020-02-21 15:10:54 +01:00
boards/z80/ez80/z20x/: Add support for W25 FLASH.
2020-03-01 14:37:18 +01:00
choice
prompt "Winbond W25 Usage"
default Z20X_W25_CHARDEV
depends on EZ80_SPI && MTD_W25
config Z20X_W25_CHARDEV
bool "Character device"
select BCH
config Z20X_W25_BLOCKDEV
bool "Block device"
config Z20X_W25_MTDDEV
bool "MTD device"
endchoice
boards/z80/ez80/z20x/: Add W25 bootloader The SD boot loader was not satisfactory because 1) the SD slot is on an optional board and, hence, cannot be part of a fundamental solution. And 2) it is too big. The only storage on borard is the Winbond W25 SPI-bsed FLASH. This commit adds support for a bootload to 1) read code in HEX format from a serial port and write it to the W25 FLASH, or 2) read code in binary form from the W25 FLASH into SRAM and execute the loaded program. boards/z80/ez80/z20x/configs: Added w25boot configuration boards/z80/ez80/z20x/src: Add bootloader logic, w25_main.c. Add logic to manage shared SRAM memory map so that the loaded program does not clobber the bootloader memory. Add logic to recover the bootloader memory into the heap after the loaded program as started. boards/z80/ez80/z20x/scripts: Rework scripts and configuration to support a bootloader and program build. The boolloader cannot use all of SRAM; the program must not clobber the SRAM region used by the bootloader.
2020-03-01 18:30:08 +01:00
config Z20X_W25_MINOR
int "W25 device minor number"
default 0
range 0 255
depends on Z20X_W25_CHARDEV
boards/z80/ez80/z20x: Initial port to z20x board. The Z20X is a simple expandable DIY computing system, built around the eZ80 microprocessor. Reference: https://z20x.computer
2020-02-21 15:10:54 +01:00
endif # ARCH_BOARD_Z20X
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