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When the TMR Manager detects a fault Lockstep state it is signaled to the MicroBlaze processors by asserting a break signal, When Microblaze gets a break vector from tmr Microblaze it's needed to clear/block the break bit in the tmr manager before performing recovery. In order to perform recovery need to perform the following steps. 1) Store all internal MicroBlaze registers in RAM 2) Execute a suspend instruction which asserts the reset signal 3) Restore all registers from RAM and execute an RTBD instruction to return from the reset handler, to resume execution at the place where the break occurred. This API supports getting called from kernel space only. Signed-off-by: Appana Durga Kedareswara rao <appana.durga.rao@xilinx.com> Link: https://lore.kernel.org/r/20220627064024.771037-3-appana.durga.rao@xilinx.com Signed-off-by: Michal Simek <michal.simek@amd.com>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.