#554 Acpi 2.0 suppurt

[Michele Giacomone]

This is a basic patch that adds some basic acpi rev2+ support and a couple of features by the addition of:
(bios/rombios32.c)-1: An XSDT table placed between the RSDT and the FADT (which is functionally identical to the already present RSDT), and the relative field in the RSDP
(bios/rombios32.c)-2: An extended firmware_waking_vector field in the FACS and relative support
(bios/rombios32.c)-3: The "newer" fields of the FADT, which are set identically to the already present ones, except for the boot_arch_flags which I tried to set in the most logical way and for the century field, which was already present but set to 0 (I set it to 0x32 according to Bochs' RTC map)
(bios/rombios32.c)-4: The FADT reset register field has been set as following
(iodev/acpi.cc)-1: The reset register code, which does a bx_pc_system.Reset(BX_RESET_HARDWARE) if a outb(pm_io_base +0x10, 0x5A) is performed (according to the acpi specs all hardware should be reset by this method)

According to the acpi specs no further improvements are needed in order to have an acpi rev2+ compliant devices. Also, none of the already used fields has been touched so an acpi rev1 driver runs without any issue

[Michele Giacomone]

Pardon the huge spelling error in the title, I've no idea how could I miss that.

[Stanislav Shwartsman]

Hi,

This patch doesn't merge in acpi.cc.
Are you in github ?
May be can create a PR for the change in github ?

[Michele Giacomone]

Hi,

Sorry for not replying, I had a few days off.
Later I'll check the patch and fix it if it needs so, since I put it
together very quickly one night and I don't remember exactly what I did.
Then I may create a PR.

Il 26/08/22 21:06, Stanislav Shwartsman ha scritto:

Hi,

This patch doesn't merge in acpi.cc.
Are you in github ?
May be can create a PR for the change in github ?

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[patches:#554] https://sourceforge.net/p/bochs/patches/554/ Acpi
2.0 suppurt

Status: open
Group: to_be_validated
Created: Tue May 05, 2020 12:06 PM UTC by Michele Giacomone
Last Updated: Tue May 05, 2020 12:08 PM UTC
Owner: nobody
Attachments:

• acpi20.patch
  https://sourceforge.net/p/bochs/patches/554/attachment/acpi20.patch
  (14.9 kB; text/x-patch)

This is a basic patch that adds some basic acpi rev2+ support and a
couple of features by the addition of:
(bios/rombios32.c)-1: An XSDT table placed between the RSDT and the
FADT (which is functionally identical to the already present RSDT),
and the relative field in the RSDP
(bios/rombios32.c)-2: An extended firmware_waking_vector field in the
FACS and relative support
(bios/rombios32.c)-3: The "newer" fields of the FADT, which are set
identically to the already present ones, except for the
boot_arch_flags which I tried to set in the most logical way and for
the century field, which was already present but set to 0 (I set it to
0x32 according to Bochs' RTC map)
(bios/rombios32.c)-4: The FADT reset register field has been set as
following
(iodev/acpi.cc)-1: The reset register code, which does a
bx_pc_system.Reset(BX_RESET_HARDWARE) if a outb(pm_io_base +0x10,
0x5A) is performed (according to the acpi specs all hardware should be
reset by this method)

According to the acpi specs no further improvements are needed in
order to have an acpi rev2+ compliant devices. Also, none of the
already used fields has been touched so an acpi rev1 driver runs
without any issue

---

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