[RTEMS Project] #2900: Improve PC386 BSP

RTEMS trac trac at rtems.org
Mon Feb 6 02:52:03 UTC 2017

#2900: Improve PC386 BSP
 Reporter:  tokencolour  |      Owner:
     Type:  enhancement  |     Status:  new
 Priority:  normal       |  Milestone:  Indefinite
Component:  bsps         |    Version:  4.11
 Severity:  normal       |   Keywords:  SoC
 = Improve PC386 BSP =




 This project involves addressing a few deficiencies in the existing pc386
 BSP as well as improving it so it supports non-legacy hardware


 To have a functioning pc386 BSP that can operate on PCs without legacy
 BIOS or peripherals. It needs to support all features of RTEMS including
 SMP and Thread Local Storage.


 * Knowledge of x86 ASM, C Programming language.
 * Run on non-legacy hardware configurations.
 * Share code as possible with new x86_64 BSP (when exists).
 * Add Thread Local Storage support to x86 (#2468)
 * Thread migration is broken on SMP on x86 (#2183)

 There are at least the following tasks identified related to support of
 non-legacy PC configurations. A non-legacy PC appears to be one in which
 at least EFI is used instead of BIOS.

 * Support video on non-legacy systems. Probe for video is known to fail on
 non-legacy systems.
 * Support PCI on non-legacy systems. Probe for PCI BIOS is known to fail
 on non-legacy systems. It is expected that PCI bus access routines will
 need to be provided for non-legacy configurations.
 * Support for APIC rather than legacy PIC.

 It is a requirement for code to be shared with x86_64 when that is
 supported. It is also a requirement for the pc386 BSP to support both
 legacy and non-legacy and decide what to do at run-time.


 * Current RTEMS developers.
 * Do not reinvent the wheel and use existing code instead, e.g. from

  *  TBD

 = Miscellaneous Sections =

 As the project progresses, you will need to add build instructions, etc
 and this page will evolve from a project description into a HOWTO.

 = References =
  *  TBD

 '''Other sections:''' If you have more to say about the project that
 doesn't fit in the proposed sections of this template, feel free to add
 other sections at will.

Ticket URL: <http://devel.rtems.org/ticket/2900>
RTEMS Project <http://www.rtems.org/>
RTEMS Project

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