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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 imports the sb_verify() function from stb.c, but now it calls the
CVC verify wrapper in order to verify signed firmware images. The
hw-key-hash and hw-key-hash-size initialized in secureboot.c are passed
to the CVC verify function wrapper.
In secureboot.c, the sb_verify() is renamed to secureboot_verify(). The
sb_verify() calls are updated in a subsequent patch.
Signed-off-by: Claudio Carvalho <cclaudio@linux.vnet.ibm.com>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
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cmpxchg will be used in a subsequent change, and this reduces the
amount of asm code.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
[stewart: fix some ifdef __TEST__ foo to ensure unittests work]
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
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Signed-off-by: Claudio Carvalho <cclaudio@linux.vnet.ibm.com>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
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Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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