0bc65cbcc3
Provide amendments to the MIPS generic platform framework so that
the new generic-based board Ranchu can be chosen to be built.
The Ranchu board is intended to be used by Android emulator. The name
"Ranchu" originates from Android development community. "Goldfish" and
"Ranchu" are terms used for two generations of virtual boards used by
Android emulator. The name "Ranchu" is a newer one among the two, and
this patch deals with Ranchu. However, for historical reasons, some
devices/drivers still contain the name "Goldfish".
MIPS Ranchu machine includes a number of Goldfish devices. The support
for Virtio devices is also included. Ranchu board supports up to 16
Virtio devices which can be attached using Virtio MMIO Bus. This is
summarized in the following picture:
ABUS
||----MIPS CPU
|| | IRQs
||----Goldfish PIC------------(32)--------
|| | | | | | | | | |
||----Goldfish TTY------ | | | | | | | |
|| | | | | | | | |
||----Goldfish RTC-------- | | | | | | |
|| | | | | | | |
||----Goldfish FB----------- | | | | | |
|| | | | | | |
||----Goldfish Events--------- | | | | |
|| | | | | |
||----Goldfish Audio------------ | | | |
|| | | | |
||----Goldfish Battery------------ | | |
|| | | |
||----Android PIPE------------------ | |
|| | |
||----Virtio MMIO Bus | |
|| | | | | |
|| | | (virtio-block)--------- |
|| (16) | |
|| | (virtio-net)------------------
Device Tree is created on the QEMU side based on the information about
devices IO map and IRQ numbers. Kernel will load this DTB using UHI
boot protocol DTB handover mode.
Signed-off-by: Miodrag Dinic <miodrag.dinic@mips.com>
Signed-off-by: Goran Ferenc <goran.ferenc@mips.com>
Signed-off-by: Aleksandar Markovic <aleksandar.markovic@mips.com>
Reviewed-by: James Hogan <jhogan@kernel.org>
(cherry picked from: https://patchwork.linux-mips.org/patch/18138/)
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
22 lines
770 B
Text
22 lines
770 B
Text
if MIPS_GENERIC
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config LEGACY_BOARDS
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bool
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help
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Select this from your board if the board must use a legacy, non-UHI,
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boot protocol. This will cause the kernel to scan through the list of
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supported machines calling their detect functions in turn if the
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kernel is booted without being provided with an FDT via the UHI
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boot protocol.
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config VIRT_BOARD_RANCHU
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bool "Support Ranchu platform for Android emulator"
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help
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This enables support for the platform used by Android emulator.
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Ranchu platform consists of a set of virtual devices. This platform
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enables emulation of variety of virtual configurations while using
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Android emulator. Android emulator is based on Qemu, and contains
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the support for the same set of virtual devices.
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endif
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