| Commit message (Collapse) | Author | Age | Files | Lines |
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Add PVR detection, chip id and other misc bits for POWER9.
POWER9 changes the location of the HILE and attn enable bits in the
HID0 register, so add these definitions also.
Signed-off-by: Michael Neuling <mikey@neuling.org>
[stewart@linux.vnet.ibm.com: Fix Numbus typo, hdata_to_dt build fixes]
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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Update the SPIRA-H pointer in the NACA so that the FSP can build and pass
the SPIRA-S structure to OPAL instead of the legacy SPIRA. Older systems
(which does not support SPIRA-H) ignores SPIRA-H pointer and continue to
pass legacy SPIRA.
"spira" is a global structure and referred everywhere inside hdata dir. Once
we enable SPIRA-H we get data in SPIRA-S area, not in legacy spira. Hence
fixup spira structure, so that we don't break building device tree.
Signed-off-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
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In very early boot, skiboot places secondary threads in holding loop
until the primary thread has finished relocating skiboot. The secondary
threads wait until a flag at INITAL_OFFSET + offsetof(boot_flag) is set
to one before continuing. After relocating the skiboot image and
applying ELF relocations the sets this flag and continues booting.
To avoid having to copy skiboot at runtime within the simulation e605691e
introduced a change to have the skiboot.tcl mambo script load skiboot at
it's preferred location of 0x30000000 rather than 0x00000000.
Unfortunately, the relocation code path is also responsible for saving the
inital offset pointer (into r15). When not taken this results in the main
thread writing to r15 + offsetof(boot_flag) instead, which leaves the
secondary threads stuck waiting for boot_flag and the main thread stuck
when trying to call-in the secondary threads during CPU initialisation.
This patch fixes the bug by saving the inital offset before checking if
relocation is necessary and adds a few comments to better document the
relocation process.
Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
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asm/asm-offsets.c:31:5: error: no previous prototype for function 'main'
[-Werror,-Wmissing-prototypes]
int main(void)
Signed-off-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
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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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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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Useful in debugging odd problems, such as skiboot > 1MB.
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
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OpenPower ABI mentions (2.2.1.1 Register Roles) that r11 is not used for
parameter passing, and again in 2.2.3 (Parameter Passing in Registers)
that only 8 registers are available, with the rest spilling to stack.
Incorrectly, we had documented that we use r11 for a 9th parameter
and we were storing and loading r11 as part of OPAL_TRACE_ENTRY.
Github-issue: https://github.com/open-power/skiboot/issues/12
Reported-by: Andrei Warkentin <andrey.warkentin@gmail.com>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
Reviewed-by: Andrei Warkentin <andrey.warkentin@gmail.com>
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This adds the PVR and CFAM ID for the Naples chip. Otherwise treated as
a Venice.
This doesn't add the definitions for the new PHB revision yet
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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