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But remove EPD OCRAM, since this is not clocked during suspend. Use
TCM instead.
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Move the memory (m_data) area in the OCRAM linker file to the
EPDC OCRAM area. Also use the code bus for the code area instead
of the system bus which should improve performance. This allows
firmware of up to ~64KiB and memory of 128KiB.
Note: To get more heap space in FreeRTOS configTOTAL_HEAP_SIZE in
FreeRTOSConfig.h needs to be adjusted as well.
Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
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Increase the memory (m_data) area in the DDR linker file. Also use
the code bus for the code area instead of the system bus. This
aligns with the _tcm.ld file and should improve performance.
Note: To get more heap space in FreeRTOS configTOTAL_HEAP_SIZE in
FreeRTOSConfig.h needs to be adjusted as well.
Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
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The linker file to build a firmware running from DDR memory
(MCIMX7D_M4_ddr.ld) currently puts the firmware at the end of
the 512MiB boundary. That is not a valid memory area for the
Colibri iMX7S module (which comes with 256MiB of DDR memory).
In practise it actually does work because out-of-bound addresses
usually just mirror the content of the lower address, but it is
a behavior which should not be relied upon. This change moves
the firmware location to a valid location for all our modules
at the end of the 256MiB boundary (0x8ff00000, allows for a
firmware up to ~960kiB).
Furthermore, the VirtIO VRING offset is currently at the end of
the 1024MiB boundary. Again, due to the mirroring behavior this
worked in practise, but it should not be relied upon. Hence move
the VRING to the end of the 256MiB boundary too (0x8fff0000). The
firmware size has been choosen so that the VRING just fits after
the firmware.
Note that since the VRING offsets are hardcoded, this change needs
a corresponding change in the Linux kernel source:
arch/arm/mach-imx/imx_rpmsg.c (function imx_rpmsg_probe)
Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
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Add mode parameter which allows to select DCE/DTE mode of the
debug UART.
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Fix assertion in modem mode to allow using DTE mode.
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