SeaBIOS January 2012

seabios@seabios.org

20 participants
71 discussions

[PATCH 1/3][Seabios] Add bitmap for cpu _EJ0 callback

by Vasilis Liaskovitis

Signed-off-by: Vasilis Liaskovitis <vasilis.liaskovitis(a)profitbricks.com> --- src/acpi-dsdt.dsl | 7 +++++++ 1 files changed, 7 insertions(+), 0 deletions(-) diff --git a/src/acpi-dsdt.dsl b/src/acpi-dsdt.dsl index 7082b65..71d8ac4 100644 --- a/src/acpi-dsdt.dsl +++ b/src/acpi-dsdt.dsl @@ -650,8 +650,15 @@ DefinitionBlock ( Store(DerefOf(Index(CPON, Arg0)), Local0) If (Local0) { Return(0xF) } Else { Return(0x0) } } + /* CPU eject notify method */ + OperationRegion(PREJ, SystemIO, 0xaf20, 32) + Field (PREJ, ByteAcc, NoLock, Preserve) + { + PRE, 256 + } Method (CPEJ, 2, NotSerialized) { // _EJ0 method - eject callback + Store(ShiftLeft(1, Arg0), PRE) Sleep(200) } -- 1.7.7.3

9 years, 1 month

[PATCH 0/3] acpi_piix4: Add CPU eject handling

by Vasilis Liaskovitis

This patch series adds support for CPU _EJ0 callback in Seabios and qemu-kvm. The first patch defines the CPU eject bitmap in Seabios and writes to it during the callback. The second patch adds empty stub functions to qemu-kvm to handle the bitmap writes. The third patch defines the eject method to handle the CPU_DEAD event in Liu Ping Fan's cpu lifecycle/destruction patchseries, see: http://patchwork.ozlabs.org/patch/127832/ This ACPI implementation can be used instead of the cpustate virtio/pci device in the original series. Vasilis Liaskovitis (2): acpi_piix4: Add CPU ejection handling acpi_piix4: Call KVM_SETSTATE_VCPU ioctl on cpu ejection hw/acpi_piix4.c | 36 ++++++++++++++++++++++++++++++++++++ 1 files changed, 36 insertions(+), 0 deletions(-) -- 1.7.7.3

9 years, 1 month

[PATCH V2 1/3]

by Nils

Make the naming in the LX code generic to Geode.

9 years, 1 month

[PATCH V2 3/3]

by Nils

Add the GX2 functionality.

9 years, 1 month

[PATCH V2 2/3]

by Nils

Some little cleanup.

9 years, 1 month

Re: [SeaBIOS] [PATCH] Use dedicated HVM debug io port for Xen

by Kevin O'Connor

On Sat, Jan 07, 2012 at 06:27:06PM +0000, Julian Pidancet wrote: > On Thu, Jan 5, 2012 at 12:44 AM, Kevin O'Connor <kevin(a)koconnor.net> wrote: > > > > Is the issue that writes to 0x402 are causing an issue on Xen, or just > > that you don't see the debug output? > > > > What's the origin of 0xe9 - is it a "standard" for debug output? What > > does Xen do today on writes to 0xe9? > > > > Xen has some sort of ring buffer similar to the linux one, that you > can access using the xl dmesg command. Every guest access to the 0xe9 > port is trapped by the hypervisor which appends the characters to the > ring buffer. I doubt 0x402 does anything on Xen, aside from beeing > trapped in qemu if configured correctly, but I havn't tried. If you really want this, I'm okay with a patch that introduces CONFIG_DEBUG_PORT, and has Kconfig do all the magic of selecting the preferred debug port. That okay? -Kevin

9 years, 1 month

Re: [SeaBIOS] [PATCH] Use dedicated HVM debug io port for Xen

by Kevin O'Connor

On Thu, Jan 05, 2012 at 12:26:31AM +0000, Julian Pidancet wrote: > On Thu, Jan 5, 2012 at 12:05 AM, Kevin O'Connor <kevin(a)koconnor.net> wrote: > > On Wed, Jan 04, 2012 at 05:19:59PM +0000, Julian Pidancet wrote: > >> On Sat, Nov 5, 2011 at 2:43 AM, Julian Pidancet > >> <julian.pidancet(a)gmail.com> wrote: > >> > When running on Xen, use Xen debug io port as debug output instead > >> > of Bochs one. > > > > I'm leery of having multiple "magic" debug ports. Is it possible for > > Xen to pick up port 0x0402 (or use the qemu style -device > > isa-debugcon,iobase=0x402 command line option)? > > > > Well, I initially thought that 0x402 was a bochs specific debug port. > Now I'm not too sure about this any longuer, because I just found in > the bochs documentation that 0xe9 can be used as well: > http://bochs.sourceforge.net/doc/docbook/user/bochsrc.html > (port_e9_hack) > > Can you enlighten me as to the origin of the 0x402 port ? As far as I know, it's a Bochs BIOS thing (see rombios.h). Bochs seems to have lots of debug ports (eg, 0x400-0x403) - I'm not sure why. Qemu also has code for port 0x402 if DEBUG_BIOS is enabled in hw/pc.c - though it's much easier to use the isa-debugcon command line option. Also note that the DBUG() method in SeaBIOS' src/acpi-dsdt.dsl is also setup to use port 0x402 right now. > I really doubt picking up a new debug port in xen would be acceptable > because 0xe9 has been around for a long time and it would certainly > break legacy code. Is the issue that writes to 0x402 are causing an issue on Xen, or just that you don't see the debug output? What's the origin of 0xe9 - is it a "standard" for debug output? What does Xen do today on writes to 0xe9? -Kevin

9 years, 1 month

[PATCH 3/3]

by Nils

Add the GX2 functionality. Improve Kconfig VGA options. Conditionally build VGA bios rom if selected in Kconfig.

9 years, 1 month

Seabios on Via pc2500e

by Elisenda Cuadros

Hello list, I´m trying to boot a Via pc2500e motherboard with coreboot and seabios (built from coreboot, stable). Everything is ok, I can see the bootmenu (I have only one hard disk at the moment), but when I press "1" it seems coreboot is restarting entering in a loop. Is this a normal behaviour? I tried attaching a bootorder file with cbfstool with same result. I attach you the log. Thanks in advance. Best regards, Elisenda

9 years, 1 month

[PATCH 2/3]

by Nils

Some little cleanup.

9 years, 1 month

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SeaBIOS January 2012