#
# 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"