#
# 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        "cfg/bootloader-sdram.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"

# LED
options         "LED_KERNEL_PORT=TRISA"     # for kernel activity LED...
options         "LED_KERNEL_PIN=15"         # ...use pin RA15
options         "LED_DISK_PORT=TRISC"       # for disk activity LED...
options         "LED_DISK_PIN=13"           # ...use pin RC13
options         "LED_SWAP_PORT=TRISC"       # for swap activity LED...
options         "LED_SWAP_PIN=14"           # ...use pin RC14
options         "LED_TTY_PORT=TRISA"        # for serial activity LED...
options         "LED_TTY_PIN=14"            # ...use pin RA14

# Root filesystem at /dev/sd0a, swap at /dev/sd0b
config          unix    root on sd0a
                        swap on sd0b

# Serial UART ports
device          uart3
options         "UART3_ENABLED"             # TODO: delete this option

# Console options
options         "CONSOLE_DEVICE=tty2"       # /dev/tty2

# SPI ports
controller      spi4                        # SD card
options         "SPI_ENABLED"               # TODO: delete this option

# 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
disk            sd0     at spi4 flags 0x63  # select pin RF3
options         "SD0_MHZ=10"                # speed 10 MHz
options         "SD0_PORT=4"                # at spi4               TODO: delete
options         "SD0_CS_PORT=TRISF"         # for chip select...    TODO: use flags
options         "SD0_CS_PIN=3"              # ...use pin RF3        TODO: use flags
options         "SD0_ENA_PORT=TRISB"        # for microSD enable... TODO: use flags
options         "SD0_ENA_PIN=13"            # ...use pin RB13       TODO: use flags

# General purpose I/O ports
device          gpio0
options         "GPIO_ENABLED"              # TODO: delete this option

# ADC driver
device          adc0
options         "ADC_ENABLED"               # TODO: delete this option

# PWM driver
device          pwm0
options         "PWM_ENABLED"               # TODO: delete this option

# Use SDRAM driver for the external ramdisk
disk            sdramp0                     # SDRAM on external memory bus
options         "SDRAMP_ENABLED"            # TODO: delete this option
options         "KERNEL_EXECUTABLE_RAM"     # allow kernel code in RAM area

# This defines the swap size and a fs partition size on the external ramdisk.
# When the sa@XXXX is larger than the SWAP_KBYTES, the system will use
# the swap located on the external ramdisk automatically.
# (sd@xxxx + fs@xxxx) <= ramdisk_size
options         "PARTITION='sdramp0:sa@2048,fs@14000'"
options         "NMOUNT=3"