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Because MT8195 SCP core 0 and core 1 both boot from head of SRAM and
have the same viewpoint of SRAM, SCP has a "core 1 SRAM offset"
configuration to control the access destination of SCP core 1 to boot
core 1 from different SRAM location.
The "core 1 SRAM offset" configuration is composed by a range
and an offset. It works like a simple memory mapped mechanism.
When SCP core 1 accesses a SRAM address located in the range,
the SCP bus adds the configured offset to the address to
shift the physical destination address on SCP SRAM. This shifting is
transparent to the software running on SCP core 1.
Signed-off-by: Tinghan Shen <tinghan.shen@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Tested-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20230901080935.14571-11-tinghan.shen@mediatek.com
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
c01fb97cf2