[RTEMS Project] #2900: Improve PC386 BSP

[RTEMS trac]

#2900: Improve PC386 BSP
-------------------------------------+----------------------------
 Reporter:  Tanu Hari Dixit          |       Owner:  Joel Sherrill
     Type:  project                  |      Status:  assigned
 Priority:  normal                   |   Milestone:  Indefinite
Component:  bsps                     |     Version:
 Severity:  normal                   |  Resolution:
 Keywords:  SoC, BSP, large, medium  |  Blocked By:
 Blocking:                           |
-------------------------------------+----------------------------
Description changed by Gedare Bloom:

Old description:

> = Improve PC386 BSP =
>

> '''Status:'''
>
> Uninitiated.
>
> '''Introduction:'''
>
> This project involves addressing a few deficiencies in the existing pc386
> BSP as well as improving it so it supports non-legacy hardware
> configurations.
>
> '''Goal:'''
>
> 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.
>
> '''Requirements:'''
>
> * 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.
>
> '''Resources:'''
>
> * Current RTEMS developers.
> * Do not reinvent the wheel and use existing code instead, e.g. from
> FreeBSD.

New description:

 = Improve PC386 BSP =


 '''Status:'''

 Uninitiated.

 '''Introduction:'''

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

 '''Goal:'''

 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.

 '''Requirements:'''

 * 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)
 * See also #2901 Emulate i386 (x86) BIOS for VESA Support

 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.

 '''Resources:'''

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

--

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Ticket URL: <http://devel.rtems.org/ticket/2900#comment:7>
RTEMS Project <http://www.rtems.org/>
RTEMS Project