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The value was provided by Dave Larson and is what pHyp uses
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
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Move the contents of opal.h, which is the definition of the OPAL API
shared with Linux, into opal-api.h.
Recreate opal.h, containing just the include of types.h as well as
including opal-api.h and opal-internal.h.
We can also remove the #ifdef SKIBOOT, because opal.h is no longer
shared with Linux.
This gets us to an opal-api.h that is purely a superset of Linux's
opal-api.h, ie. the only differences are things that are new in skiboot
and haven't yet been added to Linux.
Finally update head.S to only include opal-api.h, which is all it needs,
and avoids the need for ASSEMBLY guards in opal.h.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
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Currently when running on mambo OPAL_CEC_POWER_DOWN doesn't work, the
simulator keeps running.
We can use the magic mambo support instruction with the right opcode to
ask mambo to stop the simulation.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
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And print some informations about GPR state, backtrace, etc...
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
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Linux no longer calls it, it never worked on LE and generally
speaking never really did anything useful anyway.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
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Aids in debugging relocation failure as you get an immediate error.
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
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Mambo doesn't implement various things such as PBA SCOMs, LPC,
ChipTOD, etc... It also provides a special console hook.
This adds detection of Mambo via the /mambo node, and enables
us to boot all the way to Linux.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
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Removed following:
- Machine check handle and other related routines.
- per-cpu MCE event used to record machine check data
cpu_thread->mc_event;
- Machine check related definition including mce event structure from
include/opal.h
- A comment above GET_STACK() #define that warns about runtime modification
made to GET_STACK macro by MC patching code.
Signed-off-by: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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We use a double link technique, doing a first pass with a .o containing
a dummy symbol map, then re-linking with a new .o
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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This patch adds:
- Normal builds are done with -fstack-protector (we want to investigate
using -fstack-protector-strong on gcc4.9 but for now we just use that
- Build with STACK_CHECK=1 will use -fstack-protector-all and -pg and
will check the stack in mcount
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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Otherwise, if your path contains something like "linux-foo" then the "linux"
part gets replaced by the preprocessor due to stupid built-ins.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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This makes OPAL use the OCC interrupt facility to send itself an interrupt
whenever the OPAL event bit is set as a result of an OPAL call that wasn't
itself opal_handle_interrupt() or opal_handle_hmi() (both of which we know
the OS will already deal with appropriately).
This ensures that OPAL event changes are notified to Linux via its
interrupt path which is necessary for it to properly broadcast the state
change to its various clients.
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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