On 29.02.24 00:05, Chris Johns wrote:
If it is will the details be exported in the pkgconfig file and made available
for users building applications in a consistent and easy to use way?
Application build systems can query the tool using the RTEMS_MKIMAGE package
configuration varible, for example:
pkg-config --variable=RTEMS_MKIMAGE
${prefix}/lib/pkgconfig/${ARCH}-${BSP_NAME}.pc
Nice. This is my preferred way of handling this.
If the BSP does not provide a tool, then the variable RTEMS_MKIMAGE is set to
"false".
So the process has to be a single command?
Yes, a single command which is written in Python. For the U-Boot image
it converts the ELF file to binary, then to a gz file, then to the
U-Boot image.
It could help to export also EXEEXT and BOOT_IMAGE_EXTENSION in the package
configuration file. For RTEMS 6, we should have a look how our package
configuration support can be used to build applications on some commonly used
build systems. We are currently not able to produce build images.
Yes we should. I also wonder if base addresses and other values that get used
should be prov
Is this output created along side the ELF file?
Yes.
+1
Does this approach handle all BSPs that need this?
The BSP can use Python, so I would say yes.
I am sorry I do not follow.
The script is written in Python, so this should be good enough to
generate boot images for all kinds of BSPs.
Will you be converting all BSPs that need this type of support?
I will add support for the BSPs using U-Boot.
Could you please provide the high level view of how this is to be handled? I
have not reviewed all the detail in the patches to understand this and even then
I may get things wrong.
The BSP provides an optional script to convert an ELF file into a boot
image. In a Makefile it could be used like this:
EXEEXT = $(shell pkg-config --variable=EXEEXT $(PKG_CONFIG))
RTEMS_MKIMAGE = $(shell pkg-config --variable=RTEMS_MKIMAGE $(PKG_CONFIG))
ifeq ($(RTEMS_MKIMAGE), false)
APP = $(BUILDDIR)/app$(EXEEXT)
else
BOOT_IMAGE_EXTENSION = $(shell pkg-config
--variable=BOOT_IMAGE_EXTENSION $(PKG_CONFIG))
APP = $(BUILDDIR)/app$(BOOT_IMAGE_EXTENSION)
%$(BOOT_IMAGE_EXTENSION): %$(EXEEXT)
$(RTEMS_MKIMAGE) $^ $@
endif
Should we create a GSoC project to review and support the other BSPs?
I would add the boot image support only if needed. There are probably
more important things to do.
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