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History log of /src/sys/arch/xen/x86/pvh_consinit.c
RevisionDateAuthorComments
 1.6  17-Oct-2023  bouyer Make sure to always fall back to xen_early_console, even for dom0
 1.5  16-Oct-2023  bouyer Move the pvh_xencons so xen_machdep.c as early_xencons, so it can be
used in the future as early ouput for plain PV guests too.
 1.4  22-Jul-2023  mrg xen: declare 'default_consinfo' as extern in a header

this makes pvh_consinit.c actually compile with CONS_OVERRIDE set.
i didn't see any good header to add to (bootinfo.h and cpu.h both
seem to be poor choices but were considered), hence the new one
with just this definition.
 1.3  24-Mar-2023  bouyer Allow a PVH dom0 to use VGA as console: make xen_pvh_consinit() return 1 if
it handles the console and 0 otherwise (especially when console=tty0 or
console=pc is present on the command line).
In consinit() fallback to native console selection if xen_pvh_consinit()
returns 0.
 1.2  03-May-2020  bouyer branches: 1.2.20;
Hanble dom0 console. This one doesn't need a ring to be mapped, and
can be used earlier.
 1.1  02-May-2020  bouyer Introduce Xen PVH support in GENERIC.
This is compiled in with
options XENPVHVM
x86 changes:
- add Xen section and xen pvh entry points to locore.S. Set vm_guest
to VM_GUEST_XENPVH in this entry point.
Most of the boot procedure (especially page table setup and switch to
paged mode) is shared with native.
- change some x86_delay() to delay_func(), which points to x86_delay() for
native/HVM, and xen_delay() for PVH

Xen changes:
- remove Xen bits from init_x86_64_ksyms() and init386_ksyms()
and move to xen_init_ksyms(), used for both PV and PVH
- set ISA no-legacy-devices property for PVH
- factor out code from Xen's cpu_bootconf() to xen_bootconf()
in xen_machdep.c
- set up a specific pvh_consinit() which starts with printk()
(which uses a simple hypercall that is available early) and switch to
xencons when we can use pmap_kenter_pa().
 1.2.20.2  18-Oct-2023  martin Pull up following revision(s) (requested by bouyer in ticket #428):

sys/arch/xen/xen/xen_machdep.c: revision 1.28
sys/arch/x86/pci/pci_machdep.c: revision 1.97
sys/arch/xen/xen/genfb_xen.c: revision 1.1
sys/arch/xen/xen/genfb_xen.c: revision 1.2
sys/arch/xen/include/hypervisor.h: revision 1.59
sys/arch/i386/conf/XEN3PAE_DOM0: revision 1.41 (patch)
sys/arch/x86/x86/genfb_machdep.c: revision 1.22
sys/arch/xen/x86/consinit.c: revision 1.18
sys/arch/xen/x86/autoconf.c: revision 1.26
sys/external/mit/xen-include-public/dist/xen/include/public/platform.h: revision 1.2
sys/arch/xen/conf/files.xen: revision 1.188
sys/arch/x86/x86/consinit.c: revision 1.37
sys/arch/xen/conf/files.xen: revision 1.189
sys/arch/x86/x86/consinit.c: revision 1.38
sys/external/mit/xen-include-public/dist/xen/include/public/xen.h: revision 1.2
sys/arch/x86/include/genfb_machdep.h: revision 1.7
sys/arch/xen/x86/pvh_consinit.c: revision 1.5
sys/arch/xen/x86/pvh_consinit.c: revision 1.6
sys/arch/amd64/conf/XEN3_DOM0: revision 1.201

Move the pvh_xencons so xen_machdep.c as early_xencons, so it can be
used in the future as early ouput for plain PV guests too.

Support non-VGA framebuffers for Xen dom0. This is mandatory for graphic
console on EFI-only hardware.

Add a xen_genfb_getbtinfo() function which will return a btinfo_framebuffer
structure, filled in with parameters provided by Xen

when runing as a Xen dom0, call xen_genfb_getbtinfo() instead of
lookup_bootinfo(BTINFO_FRAMEBUFFER) when adding properties to the
PCI graphic device (when genfb is attached) and in x86_genfb_init()
when genfb is used as console.

x86/x86/consinit.c: If running as a Xen dom0, use xen_genfb_getbtinfo()
to check if we have a genfb console

xen/x86/consinit.c: support genfb as possible console

xen/x86/consinit.c: use the hypervior IO as console until a better one
is found. If the hypervisor is using a serial port for boot messages,
we'll get NetBSD's boot message on the serial port too until
the real console takes over.

xen/x86/autoconf.c: rework device_register() to be closer to the x86 version.
Especially make sure that device_pci_register() is called.

Make sure to always fall back to xen_early_console, even for dom0

Enable genfb in DOM0 kernels

Add ext_lfb_base to dom0_vga_console_info, from recent Xen. We know if it's
present or not by checking dom0.info_size

Add XENPF_get_dom0_console, which gets a dom0_vga_console_info stucture
from the hypervisor. To be used by PVH dom0 kernels.

XENPVH option is not used. Fix consinit.c to use XENPVHVM as intended
and XENPVH from defflag
for a dom0 PVH, the dom0_vga_console_info structure has to be retrieved
using a platform hypercall; do so in the XENPVHVM case.

Now genfb works in a PVH dom0 running on Xen 4.18 (Xen 4.15 doesn't support
this platoform op, so no way to make it work here).
 1.2.20.1  30-Mar-2023  martin Pull up following revision(s) (requested by bouyer in ticket #131):

sys/arch/x86/x86/consinit.c: revision 1.36
sys/arch/xen/x86/pvh_consinit.c: revision 1.3
sys/arch/xen/include/xen.h: revision 1.48

Allow a PVH dom0 to use VGA as console: make xen_pvh_consinit() return 1 if
it handles the console and 0 otherwise (especially when console=tty0 or
console=pc is present on the command line).

In consinit() fallback to native console selection if xen_pvh_consinit()
returns 0.

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