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[0/3] hw/isa/piix4: Remove MIPS Malta specific bits

Message ID 20221026194619.28880-1-philmd@linaro.org (mailing list archive)
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Series hw/isa/piix4: Remove MIPS Malta specific bits | expand

Message

Philippe Mathieu-Daudé Oct. 26, 2022, 7:46 p.m. UTC 
Bernhard posted a series merging both PIIX3/PIIX4 models
in one [1]. Due to Malta-specific board code forced into
the PIIX4 reset values, Bernhard had to include an array
of "register values at reset" as a class property. This
is not wrong, but to model properly the model, we should
simply use the hardware real reset values, not try to
bend the model to please the Malta board.

This series fix this issue by having the Malta bootloader
code setting the board-specific PIIX4 IRQ routing values.

Note patch 2 still misses an equivalent nanoMIPS code.

Regards,

Phil.

[1] https://lore.kernel.org/qemu-devel/20221022150508.26830-1-shentey@gmail.com/

Philippe Mathieu-Daudé (3):
  hw/mips/malta: Introduce PIIX4_PCI_DEVFN definition
  hw/mips/malta: Set PIIX4 IRQ routes in embedded bootloader
  hw/isa/piix4: Correct IRQRC[A:D] reset values

 hw/isa/piix4.c  |  8 ++++----
 hw/mips/malta.c | 23 ++++++++++++++++++++++-
 2 files changed, 26 insertions(+), 5 deletions(-)

Comments

Philippe Mathieu-Daudé Oct. 26, 2022, 7:48 p.m. UTC | #1 
On 26/10/22 21:46, Philippe Mathieu-Daudé wrote:
> Bernhard posted a series merging both PIIX3/PIIX4 models
> in one [1]. Due to Malta-specific board code forced into
> the PIIX4 reset values, Bernhard had to include an array
> of "register values at reset" as a class property. This
> is not wrong, but to model properly the model, we should
> simply use the hardware real reset values, not try to
> bend the model to please the Malta board.
> 
> This series fix this issue by having the Malta bootloader
> code setting the board-specific PIIX4 IRQ routing values.
> 
> Note patch 2 still misses an equivalent nanoMIPS code.
> 
> Regards,
> 
> Phil.
> 
> [1] https://lore.kernel.org/qemu-devel/20221022150508.26830-1-shentey@gmail.com/
> 
> Philippe Mathieu-Daudé (3):
>    hw/mips/malta: Introduce PIIX4_PCI_DEVFN definition
>    hw/mips/malta: Set PIIX4 IRQ routes in embedded bootloader
>    hw/isa/piix4: Correct IRQRC[A:D] reset values

Based-on: <20221026191821.28167-1-philmd@linaro.org>
https://lore.kernel.org/qemu-devel/20221026191821.28167-1-philmd@linaro.org/