[PATCH v3] mach-imx: bootaux: elf firmware support

[sbabic at denx.de <sbabic@denx.de>]

> From: Igor Opaniuk <igor.opaniuk@toradex.com>
> Currently imx-specific bootaux command doesn't support ELF format
> firmware for Cortex-M4 core.
> This patches introduces a PoC implementation of handling elf firmware
> (load_elf_image_phdr() was copy-pasted from elf.c just for PoC).
> ELF64 binaries isn't supported yet.
> This has the advantage that the user does not need to know to which
> address the binary has been linked to. However, in order to handle
> and load the elf sections to the right address, we need to translate the
> Cortex-M4 core memory addresses to primary/host CPU memory
> addresses (Cortex A7/A9 cores).
> This allows to boot firmwares from any location with just using
> bootaux, e.g.:
> > tftp ${loadaddr} hello_world.elf && bootaux ${loadaddr}
> Similar translation table can be found in the Linux remoteproc
> driver [1].
> [1] https://elixir.bootlin.com/linux/latest/source/drivers/remoteproc/imx_rproc.c
> Signed-off-by: Igor Opaniuk <igor.opaniuk@toradex.com>
> Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
> Reviewed-by: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
Applied to u-boot-imx, -next, thanks !

Best regards,
Stefano Babic

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