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This changes to build system to use thin archives rather than
incremental linking for built-in.o, similar to recent change to Linux.
built-in.o is renamed to built-in.a, and is created as a thin archive
with no index, for speed and size. All built-in.a are aggregated into
a skiboot.tmp.a which is a thin archive built with an index, making it
suitable or linking. This is input into the final link.
The advantags of build size and linker code placement flexibility are
not as great with skiboot as a bigger project like Linux, but it's a
conceptually better way to build, and is more compatible with link
time optimisation in toolchains which might be interesting for skiboot
particularly for size reductions.
Size of build tree before this patch is 34.4MB, afterwards 23.1MB.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
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This adds support for running under qemu "powernv" platform, which
is currently available via the qemu repository at:
https://github.com/ozbenh/qemu branch "powernv"
qemu can't yet create DT entries for ISA devices so we hard wire the UART
and RTC devices in the device-tree like we do with other platforms.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
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By adding an explicit mambo platform we can do tricks like a fake
NVRAM, actually get RTC from mambo and generally be a bit better
in a simulator
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
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We might have a different BMC in the future..
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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