Make RAM loading available for single loaders #2062
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boot/zephyr/Kconfig
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| config BOOT_NO_UPGRADE | ||
| bool "No upgrade" | ||
| help | ||
| No upgrade is performed - usually, this option will be used in | ||
| conjunction with BOOT_RAM_LOAD. |
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I don't know what you're doing here but no, this Kconfig is not needed and put the ram load Kconfig back where it was
Because single application slot has nothing to do with RAM load mode, they are two completely different modes, RAM load is it's own dual-slot system, single application image is a single flash image. If you want to add a single RAM slot mode then that's something that can be added as a distinct mode, not as modifying single application slot |
edersondisouza
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Ok - using a separate Kconfig instead of reusing the choice under !SINGLE_APPLICATION_SLOT. |
boot/zephyr/Kconfig
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| if SINGLE_APPLICATION_SLOT | ||
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| config SINGLE_APPLICATION_SLOT_RAM_LOAD | ||
| bool "RAM load for single application slot" | ||
| help | ||
| If y, the image is loaded to RAM and executed from there. For this reason, | ||
| the image has to be linked to be executed from RAM. The address that the | ||
| image is copied to is specified using the load-addr argument to the | ||
| imgtool.py script which writes it to the image header. | ||
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| endif # SINGLE_APPLICATION_SLOT |
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this needs to be a distinct mode, not one that uses SINGLE_APPLICATION_SLOT, that Kconfig is as I said in the previous review for single flash application only, there needs to be a new Kconfig, one that does not use an existing Kconfig
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Ok - moved the Kconfig outside if SINGLE_APPLICATION_SLOT, so one doesn't need something like:
CONFIG_SINGLE_APPLICATION_SLOT=y
CONFIG_SINGLE_APPLICATION_SLOT_RAM_LOAD=y
Only CONFIG_SINGLE_APPLICATION_SLOT_RAM_LOAD=y is needed. Implementation-wise though, it will select SINGLE_APPLICATION_SLOT as the code path is basically the same.
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boot/zephyr/Kconfig
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| @@ -320,6 +307,28 @@ config BOOT_SWAP_SAVE_ENCTLV | |||
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| endif # !SINGLE_APPLICATION_SLOT | |||
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| config SINGLE_APPLICATION_SLOT_RAM_LOAD | |||
| bool "RAM load for single application slot" | |||
| select SINGLE_APPLICATION_SLOT | |||
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| select SINGLE_APPLICATION_SLOT |
This needs to be a distinct mode, it can use the same .c file and check the ifdefs but this Kconfig needs to be its own Kconfig and not do anything with other MCUboot mode Kconfigs
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| #endif /* CONFIG_SINGLE_APPLICATION_SLOT */ | |||
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| #ifdef CONFIG_SINGLE_APPLICATION_SLOT_RAM_LOAD | |||
| #define MCUBOOT_RAM_LOAD 1 | |||
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And here, add a new define for this mode and add it to the base .c files that needs it to enable the required functions
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RAM loading code is currently under bootutil/loader.c, and it's not accessible for different loaders, such as the single loaders. Future patches will make use of the RAM loading code outside the bootutil/loader.c context, and this patch prepares for that by making it standalone on boot/bootutil/src/ram_load.c Signed-off-by: Ederson de Souza <ederson.desouza@intel.com>
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@teburd Needs a signed off line from you |
Following the split of RAM code, these definitions will help use it with single slot applications. Signed-off-by: Ederson de Souza <ederson.desouza@intel.com> Signed-off-by: Tom Burdick <thomas.burdick@intel.com>
This option basically enables MCUBOOT_RAM_LOAD in a single slot configuration, meaning the image on slot0 will be loaded into RAM. Signed-off-by: Ederson de Souza <ederson.desouza@intel.com>
Now that's possible to load image to RAM on single loaders, add support on Zephyr port for that. Signed-off-by: Ederson de Souza <ederson.desouza@intel.com>
Done |
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@teburd CI still failing on sign off |
Code for loading the image to RAM is currently under
bootutil/loader.c. However, single loaders (used when one setsMCUBOOT_SINGLE_APPLICATION_SLOT) cannot use this file - a single loader in fact re-implements some of the methods ofbootutil/loader.c.This PR splits the bits of code related to RAM loading to another file inside bootutil (
ram_load.c) and make them available onbootutil_priv.h, so that single loaders can simply reuse this code.Note: these are basically the first four patches from #2044 - it seems that the multiple source bits of that PR are a bit controversial, so this PR focus on the RAM loading availability, which is hopefully less controversial.