68 lines
2.4 KiB
Plaintext
68 lines
2.4 KiB
Plaintext
#
|
|
# 32MXSDRAM board PCB v1.0 with UART console
|
|
# ===========================================
|
|
# Console on UART3.
|
|
#
|
|
# To build the kernel, use:
|
|
# cd sys/pic32/32mxsdram
|
|
# kconfig Config
|
|
# make clean
|
|
# make
|
|
#
|
|
# Format of this file is described on page:
|
|
# http://retrobsd.org/wiki/doku.php/doc/kconfig
|
|
#
|
|
architecture "pic32"
|
|
cpu "PIC32MX7" # Processor variant
|
|
board "CUSTOM_32MXSDRAM" # Board type
|
|
ldscript "32mxsdram/bootloader.ld" # Linker script
|
|
|
|
# Standard system options
|
|
options "HZ=1000" # Rate of timer interrupt
|
|
options "CPU_KHZ=80000" # Oscillator frequency of CPU core
|
|
options "BUS_KHZ=80000" # Frequency of peripheral bus
|
|
options "BUS_DIV=1" # Bus clock divisor 1/2/4/8
|
|
#options "NPROC=20"
|
|
|
|
# LEDs
|
|
signal "LED_KERNEL" pin RA15 # kernel activity indicator
|
|
signal "LED_DISK" pin RC13 # disk activity indicator
|
|
signal "LED_SWAP" pin RC14 # swap activity indicator
|
|
signal "LED_TTY" pin RA14 # tty activity indicator
|
|
|
|
# Root filesystem at /dev/sd0a, swap at /dev/sd0b
|
|
config unix root on sd0a
|
|
swap on dr0b # swap on SDRAM
|
|
|
|
# Serial UART ports
|
|
device uart3
|
|
|
|
# Console options
|
|
options "CONS_MAJOR=UART_MAJOR" # UART device
|
|
options "CONS_MINOR=2" # /dev/tty2
|
|
|
|
# SPI ports
|
|
controller spi4 # SD card
|
|
|
|
# sdcard's definition for the SPI port, sdcard's chipselect and high-side power switch
|
|
# because of a mod on the board we use power=B13, otherwise it shall be D12
|
|
device sd0 at spi4
|
|
pins RF3, RB13 # select pin, enable pin
|
|
options "SD_MHZ=10" # speed 10 MHz
|
|
signal "SD_ENA" pin RB13 # SD enable signal
|
|
|
|
# ADC driver
|
|
device adc
|
|
|
|
# PWM driver
|
|
device pwm
|
|
|
|
# Use SDRAM driver for the external ramdisk.
|
|
# The volume is divided into two partitions: A and B.
|
|
# Size of partition B is specified as option SDR_SWAP_KBYTES.
|
|
# The rest is partition A.
|
|
device dr0 # SDRAM on external memory bus
|
|
options "SDR_SWAP_KBYTES=2048" # size of partition B
|
|
options "KERNEL_EXECUTABLE_RAM" # allow kernel code in RAM area
|
|
options "NMOUNT=3"
|