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