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Previous patch reduced reserved space in spira structure. Now its safe
to reduce the memory for spira section from 2K to 1K. Create separate
memory section with 1K size for SPIRA-H.
Also initialize SPIRA-H. FSP makes use of this information to pass various
boot time data (like SPIRA-S, etc) to host.
Signed-off-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
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Rearrange memory map slightly, adding in an extra 2MB into skiboot
heap.
We lost 1MB of HEAP when allowing skiboot binary to be 2MB, and we
were starting to get close to not having a lot of room to play
with, especially on larger systems.
With this patch:
- on Tuleta, we now have 4,422,472 free in firmware-heap for runtime.
- on Mambo, we have 13,094,080 free
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
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When built with gcov, skiboot is >1MB (closer to 1.5MB) and there
were a few assumptions about skiboot being <1MB.
The biggest one was that when code got larger, we'd have the sbss section
start in the middle of code, so that when we were going to relocate ourselves,
we'd only get the first 1MB of skiboot relocated, which excluded the
_DYNAMIC section, meaning that relocate() would not find the right
sections.
We also needed to not start writing over random parts of skiboot.
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
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Using the platform.load_resource interface, allow an external initramfs
image to be passed to the kernel.
We split the KERNEL_LOAD_BASE/KERNEL_LOAD_SIZE region in half, to allow
space for the initramfs.
Signed-off-by: Jeremy Kerr <jeremy.kerr@au.ibm.com>
Acked-by: Stewart Smith <stewart@linux.vnet.ibm.com>
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At present CPU control area ntuple in SPIRA structure is NULL.
ATTN component in Service Processor side checks for this field and if its empty,
it logs hardcoded SRC (0xBB821410) and generates SYSDUMP. So we have 1 SRC for
all failure (assert call) from OPAL side. This makes difficult to debug the issue.
Service processor provides attention area interface (FIPS PHyp Attentions spec),
so that we can pass SRC and user data (error message) to service processor.
This will helps us identify different failures in OPAL.
This patch enables attention area and provides interface (update_sp_attn_area())
to add src and user data (error message) through assert macro.
Attention SRC format:
1st byte - Opal src type
2-4 bytes - Holds the address of the assert function call
Signed-off-by: Aruna Balakrishnaiah <aruna@linux.vnet.ibm.com>
Signed-off-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com>
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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