2015-08-22 04:22:28 +08:00
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.. _basic_minuteia:
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Platform Configuration: basic_minuteia
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######################################
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Overview
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********
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2015-10-21 01:28:33 +08:00
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The Zephyr Kernel uses the basic_minuteia platform configuration
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2015-08-22 04:22:28 +08:00
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to emulate the galileo platform (or something similar) running on QEMU.
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It provides support for an x86 Minute IA CPU and the following devices:
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* HPET
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2015-09-17 06:04:00 +08:00
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* Advanced Programmable Interrupt Controller (APIC)
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2015-08-22 04:22:28 +08:00
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* NS16550 UART
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.. note::
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This platform configuration makes no claims about its suitability for use
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with actual galileo hardware, or any other hardware.
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Supported Boards
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****************
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The basic_minuteia platform configuration has been tested on QEMU 2.1.
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Supported Features
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******************
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The basic_minuteia platform configuration supports the following
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hardware features:
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+--------------+------------+-----------------------+
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| Interface | Controller | Driver/Component |
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+==============+============+=======================+
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| HPET | on-chip | system clock |
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+--------------+------------+-----------------------+
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| APIC | on-chip | interrupt controller |
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+--------------+------------+-----------------------+
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| NS16550 | on-chip | serial port |
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| UART | | |
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+--------------+------------+-----------------------+
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2015-09-17 06:04:00 +08:00
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The kernel currently does not support other hardware features on this platform.
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Interrupt Controller
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====================
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2015-09-17 06:04:00 +08:00
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Refer to the :ref:`galileo`.
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2015-08-22 04:22:28 +08:00
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.. note::
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The basic_minuteia platform configuration does not support PCI.
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HPET System Clock Support
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=========================
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The basic_minuteia platform configuration uses an HPET clock frequency
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of 25 MHz.
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Serial Port
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===========
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The basic_minuteia platform configuration uses a single serial
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communication channel that uses the NS16550 serial driver
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operating in polling mode. To override, enable the UART_INTERRUPT_DRIVEN
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Kconfig option, which allows the system to be interrupt-driven.
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2015-08-22 04:22:28 +08:00
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Known Problems or Limitations
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*****************************
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2015-09-17 06:04:00 +08:00
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The following platform features are unsupported:
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2015-08-22 04:22:28 +08:00
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* Isolated Memory Regions
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* Serial port in Direct Memory Access (DMA) mode
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* Serial Peripheral Interface (SPI) flash
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* General-Purpose Input/Output (GPIO)
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* Inter-Integrated Circuit (I2C)
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* Ethernet
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* Supervisor Mode Execution Protection (SMEP)
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* PCI
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