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Uses broadcast TLBIE's to cleanup the TLB on all cores and on
the nest MMU
By default this works with older binutils but there is a version (in
#defines) that requires newer binutils and which documents what the
instructions are.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
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It uses tlbiel and only cleans up the TLB of the calling core
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
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Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
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Also moves some code around to ensure things are defined before they
are used.
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
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Also changes the function name:
mambo_read/write() -> mambo_console_read/write()
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
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Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
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This changes trigger_attn() to also enable attn via HID0, so callers
don't have to do it themselves.
Signed-off-by: Michael Neuling <mikey@neuling.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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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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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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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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Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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