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Includes an implementation for vexpress using the sysflags interface and
support for the ARMv8 "spin-table" method.
Unused until "rewrite start of day page table and cpu bring up", split out to
simplify review.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Tim Deegan <tim@xen.org>
Acked-by: Julien Grall <julien.grall@linaro.org>
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Each platform code will list the device that must not pass-through to a guest.
Theses devices are used for: power management, timer,...
When theses devices are given to DOM0, it can controls the hardware and then
break the whole platform.
This callback is enough until we will start to care about power performance.
For this purpose, we may need to extend this interface to implement per-device
MMIO filtering to allow dom0 to continue to control devices which it owns which
happen to share e.g. a clock controller with Xen.
Signed-off-by: Julien Grall <julien.grall@linaro.org>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
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Currently xen doesn't implement SYS MMU. When a device will talk with dom0
with DMA request the domain will use GFN instead of MFN.
For instance on the arndale board, without this patch the network doesn't
work.
The 1:1 mapping is a workaround and MUST be remove as soon as a SYS MMU is
implemented in XEN.
Signed-off-by: Julien Grall <julien.grall@linaro.org>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
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Xen can include various platform support (ie: exynos5, versatile express...)
and choose during boot time a set of callbacks for the current board.
These callbacks will be called in places where each board can have specific
code. For the moment the callbacks are:
- platform_init: additional initialization for the platform
- platform_init_time: some platform (ie: Exynos 5) needs to initialize
the timer with an uncommon way
- platform_specific_mapping: add mapping to dom0 which are not specified
in the device tree
- platform_reset: reset the platform
- platform_poweroff: poweroff the platform
- platform_quirks: list of quirks for a specific board.
Signed-off-by: Julien Grall <julien.grall@linaro.org>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
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