72 lines
2.6 KiB
Plaintext
72 lines
2.6 KiB
Plaintext
#
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# 32MXSDRAM board PCB v1.0 with UART console
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# ===========================================
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# Console on UART3.
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#
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# To build the kernel, use:
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# cd sys/pic32/32mxsdram
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# kconfig Config
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# make clean
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# make
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#
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# Format of this file is described on page:
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# http://retrobsd.org/wiki/doku.php/doc/kconfig
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#
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architecture "pic32"
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cpu "PIC32MX7" # Processor variant
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board "CUSTOM_32MXSDRAM" # Board type
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ldscript "32mxsdram/bootloader.ld" # Linker script
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# Standard system options
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options "HZ=1000" # Rate of timer interrupt
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options "CPU_KHZ=80000" # Oscillator frequency of CPU core
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options "BUS_KHZ=80000" # Frequency of peripheral bus
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options "BUS_DIV=1" # Bus clock divisor 1/2/4/8
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#options "NPROC=20"
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# LEDs
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signal "LED_KERNEL" pin RA15 # kernel activity indicator
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signal "LED_DISK" pin RC13 # disk activity indicator
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signal "LED_SWAP" pin RC14 # swap activity indicator
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signal "LED_TTY" pin RA14 # tty activity indicator
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# Root filesystem at /dev/sd0a, swap at /dev/sd0b
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config unix root on sd0a
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swap on sd0b
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# Serial UART ports
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device uart3
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# Console options
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options "CONSOLE_DEVICE=tty2" # /dev/tty2
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# SPI ports
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controller spi4 # SD card
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# sdcard's definition for the SPI port, sdcard's chipselect and high-side power switch
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# because of a mod on the board we use power=B13, otherwise it shall be D12
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device sd0 at spi4
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pins RF3, RB13 # select pin, enable pin
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options "SD0_MHZ=10" # speed 10 MHz
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options "SD0_PORT=4" # at spi4 TODO: delete
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options "SD0_CS_PORT=TRISF" # for chip select... TODO: delete
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options "SD0_CS_PIN=3" # ...use pin RF3 TODO: delete
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signal "SD0_ENA" pin RB13 # SD enable signal
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# ADC driver
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device adc
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# PWM driver
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device pwm
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# Use SDRAM driver for the external ramdisk
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device sdramp0 # SDRAM on external memory bus
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options "KERNEL_EXECUTABLE_RAM" # allow kernel code in RAM area
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# This defines the swap size and a fs partition size on the external ramdisk.
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# When the sa@XXXX is larger than the SWAP_KBYTES, the system will use
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# the swap located on the external ramdisk automatically.
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# (sd@xxxx + fs@xxxx) <= ramdisk_size
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options "PARTITION='sdramp0:sa@2048,fs@14000'"
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options "NMOUNT=3"
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