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6cb58ea897
Amlogic Meson6, Meson8, Meson8b and Meson8m2 embed an ARC core in the Always-On (AO) power-domain. This is typically used for waking up the ARM cores after system suspend. The configuration is spread across three different registers: - AO_REMAP_REG0 which must be programmed to zero, it's actual purpose is unknown. There is a second remap register which is not used in the vendor kernel (which served as reference for this driver). - AO_CPU_CNTL is used to start and stop the ARC core. - AO_SECURE_REG0 in the SECBUS2 register area with unknown purpose. To boot the ARC core we also need to enable it's gate clock and trigger a reset. The actual code for this ARC core can come from an ELF binary, for example by building the Zephyr RTOS for an ARC EM4 core and then taking "zephyr.elf" as firmware. This executable does not have any "rsc table" so we are skipping rproc_elf_load_rsc_table (rproc_ops.parse_fw) and rproc_elf_find_loaded_rsc_table (rproc_ops.find_loaded_rsc_table). Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Link: https://lore.kernel.org/r/20210921192557.1610709-3-martin.blumenstingl@googlemail.com [Fixed header file order] Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> |
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| README | ||
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.