Galileo Gen1/Gen2

Pin Names

For a component layout diagram showing pin names, see page 46 of the Intel® Quark SoC X1000 Datasheet.

See also the Intel® Galileo Datasheet.

For the Galileo Board Connection Diagram see page 9 of the Intel® Galileo Board User Guide.

Jumpers & Switches

The kernel uses the Galileo default jumper settings except for the IOREF jumper, which must be set to match the external operating voltage of either 3.3 V or 5 V.

The Galileo default switch settings are:

For more information, see page 14 of the Intel® Galileo Board User Guide.

Memory Mappings

The galileo board configuration uses default hardware memory map addresses and sizes.

For a list of memory mapped registers, see page 868 of the Intel® Quark SoC X1000 Datasheet.

Component Layout

See page 3 of the Intel® Galileo Datasheet for a component layout diagram. Click the link to open the Intel® Galileo Datasheet.

For a block diagram, see page 38 of the Intel® Quark SoC X1000 Datasheet.

PCI

The PCI driver initiates a PCI library scan of the PCI bus for any attached devices. When detected, the devices are initialized.

Serial Port Polling Mode Support

The polling mode serial port allows debug output to be printed.

For more information, see Intel® Quark SoC X1000 Datasheet, section 18.3.3 FIFO Polled-Mode Operation

Serial Port Interrupt Mode Support

The interrupt mode serial port provides general serial communication and external communication.

For more information, see Intel® Quark SoC X1000 Datasheet, section 21.12.1.4.5 Poll Mode

Interrupt Controller

The galileo board configuration uses the kernel’s static Interrupt Descriptor Table (IDT) to program the Advanced Programmable Interrupt Controller (APIC) interrupt redirection table.

HPET System Clock Support

Galileo uses HPET timing with legacy-free timer support. The galileo platform configuration uses HPET as a system clock timer.

Creating a GRUB2 Boot Loader Image from a Linux Host

If you are having problems running an application using the default GRUB of the hardware, follow these steps to test on Galileo2 boards using a custom GRUB.

1. Install the requirements to build GRUB on your host machine.

   On Ubuntu, type:

   $ sudo apt-get install gnu-efi:i386 bison libopts25 \
   libselinux1-dev autogen m4 autoconf help2man libopts25-dev flex \
   libfont-freetype-perl automake autotools-dev libfreetype6-dev \
   texinfo
   

   On Fedora, type:

   $ sudo dnf install gnu-efi bison m4 autoconf help2man flex \
      automake texinfo
   

2. Clone and build the GRUB repository using the script in Zephyr tree, type:

   $ cd $ZEPHYR_BASE
   $ ./scripts/build_grub.sh
   

3. Find the binary at $ZEPHYR_BASE/scripts/grub/bin/grub.efi.

Preparing the Boot Device

Prepare either an SD-micro card or USB flash drive to boot the Zephyr application image on a Galileo board. The following instructions apply to both devices.

1. Set the board configuration to Galileo by changing the make command to:

   $ make BOARD=galileo
   

2. Use one of these cables for serial output:

   http://www.ftdichip.com/Products/Cables/USBTTLSerial.htm

3. Format a microSD as FAT

4. Create the following directories

   efi

   efi/boot

   kernel

5. Copy the kernel file zephyr.strip to the $SDCARD/kernel folder.

6. Copy your built version of GRUB to $SDCARD/efi/boot/bootia32.efi

7. Create $SDCARD/efi/boot/grub.cfg containing the following:

   set default=0
   set timeout=10
   
   menuentry "Zephyr Kernel" {
      multiboot /kernel/zephyr.elf
   }
   

8. Insert the SDcard in the Galileo board.

9. Connect the board to the host system using the serial cable.

10. Configure your host system to watch for serial data.

    • On Linux, screen is a popular method for reading serial data.
    • On Windows, PuTTY has an option to set up configuration for serial data.

11. Power on the Galileo board.

Booting the Galileo Board

Boot the Galileo board from the boot device using GRUB2 with the boot loader present in the on-board flash.