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m68k pull request 20210315

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Add m68k virt machine
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Merge remote-tracking branch 'remotes/vivier/tags/m68k-for-6.0-pull-request' into staging

m68k pull request 20210315

Add m68k virt machine

# gpg: Signature made Mon 15 Mar 2021 20:41:51 GMT
# gpg:                using RSA key CD2F75DDC8E3A4DC2E4F5173F30C38BD3F2FBE3C
# gpg:                issuer "laurent@vivier.eu"
# gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>" [full]
# gpg:                 aka "Laurent Vivier <laurent@vivier.eu>" [full]
# gpg:                 aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>" [full]
# Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F  5173 F30C 38BD 3F2F BE3C

* remotes/vivier/tags/m68k-for-6.0-pull-request:
  m68k: add Virtual M68k Machine
  m68k: add a system controller
  m68k: add an interrupt controller
  hw/intc: add goldfish-pic
  hw/char: add goldfish-tty

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2021-03-17 10:38:27 +00:00
commit ff81439aaf
24 changed files with 1330 additions and 0 deletions
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26
docs/specs/virt-ctlr.txt Normal file
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Virtual System Controller
=========================
This device is a simple interface defined for the pure virtual machine with no
hardware reference implementation to allow the guest kernel to send command
to the host hypervisor.
The specification can evolve, the current state is defined as below.
This is a MMIO mapped device using 256 bytes.
Two 32bit registers are defined:
1- the features register (read-only, address 0x00)
This register allows the device to report features supported by the
controller.
The only feature supported for the moment is power control (0x01).
2- the command register (write-only, address 0x04)
This register allows the kernel to send the commands to the hypervisor.
The implemented commands are part of the power control feature and
are reset (1), halt (2) and panic (3).
A basic command, no-op (0), is always present and can be used to test the
register access. This command has no effect.