Native POSIX Flash support #12503

vanwinkeljan · 2019-01-16T00:04:41Z

This PR adds flash support for the Native POSIX target, the flash data is placed on a binary file on the host system. ~~Further the PR provides the possibility to access FS partition on the flash by means of FUSE file system mounted on a host directory~~

Following features were included in this PR either to make it functional or to test it:

DTS support for Native POSIX
Updated test cases that require a flash but where not covered by QEMU
~~Updated sanitycheck run directory~~
~~Extended FS API to read mount points~~
~~Added FS Shell Sample~~

This PR cover flash part mentioned in issue #6044

FUSE support will be moved to separate PR
Moved sanitycheck changes to PR #16149

zephyrbot · 2019-01-16T00:06:34Z

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aescolar

This will take a while to review.. Some minor things after a quick look thru

boards/posix/native_posix/Kconfig

boards/posix/native_posix/native_posix.dts

boards/posix/native_posix/doc/board.rst

aescolar

a few more

boards/posix/native_posix/doc/board.rst

aescolar · 2019-01-16T15:15:58Z

boards/posix/native_posix/fuse_flash.c

@@ -0,0 +1,531 @@
+/*
+ * Copyright (c) 2019 Jan Van Winkel <[email protected]>


After a quick look it would seem this file is not really part of the native_posix board, but could be shared by any posix arch based board, and could therefore have been anywhere else(?). If that is the case maybe it would be nicer to place it with the flash driver itself(?)
(The Kconfig option and cmake paragraph would go with it)

Good point but would it not be better to move it then to subsys/fs?

I have no opinion, I think it would be best if one of the flash or fs maintainers would comment here.

^^^ @nashif @ramakrishnapallala

boards/posix/native_posix/doc/board.rst

boards/posix/native_posix/fuse_flash.c

boards/posix/native_posix/doc/board.rst

dts/bindings/posix/zephyr,posix.yaml

subsys/settings/src/settings_file.c

tests/subsys/dfu/mcuboot/src/main.c

boards/posix/native_posix/doc/board.rst

samples/subsys/fs/shell/README.rst

boards/posix/native_posix/doc/board.rst

aescolar

I have no experience or knowledge about DTS or the filesystem part, so somebody else will need to review those.
@galak Would you do the honors for the DTS part? (or both)

aescolar · 2019-01-26T16:05:14Z

boards/posix/native_posix/native_posix.dts

+ reg = <0x00000000 DT_SIZE_K(2048)>;
+
+ partitions {
+ compatible = "fixed-partitions";


It really feels a bit funny to define partitions or the flash size in a file for the native_posix board, when it could have any size the developer would want to test with. Maybe somebody who know more about DTS (@galak) could comment here?

You should see it more as a default config the developer can overrule any of the DST values in a overlay.

boards/posix/native_posix/doc/board.rst

drivers/flash/Kconfig.native_posix

boards/posix/native_posix/native_posix.dts

drivers/flash/flash_native_posix.c

boards/posix/native_posix/fuse_flash.c

samples/subsys/fs/shell/README.rst

aescolar · 2019-01-26T18:25:40Z

samples/subsys/fs/shell/README.rst

+Ls
+--
+
+List all files and directories in a given path


I have no experience with the filesystem subsystem, but I can't even get to list an empty mount point.

uart:~$ fs mount nffs /nffs Successfully mounted fs:/nffs uart:~$ fs ls /nffs Unable to open /nffs (err -22)

or to mess with it from the FUSE mount side. I wonder if that's me or something is broken.

It is not you, I did hit the same issue.
After looking through the FS code it seems that it is limitation in Zephyrs FS implementation it seems that current implementation expects the root slash.

So fs ls /nffs/ should do the trick, btw I did put a workaround in the Fuse code to handle this case.

dbkinder

+1 for docs, thanks!

jhedberg · 2019-04-09T09:47:51Z

Any update on this PR?

aescolar · 2019-04-09T10:30:31Z

@galak @nvlsianpu : Could you please review the DTS and file system sides respectively?

Pending review by FS and DTS maintainers, the native_posix part was ok to the best of my recolection

galak

Sorry if I didn't mention this before, but can you pull the 'sanitycheck: Execute binary in output directory' commit into its own PR.

galak · 2019-05-14T11:26:10Z

LGTM.

vanwinkeljan · 2019-05-14T11:41:51Z

@galak

Sorry if I didn't mention this before, but can you pull the 'sanitycheck: Execute binary in output directory' commit into its own PR.

Sorry my misunderstanding; I just split the PR in two, flash support and fuse access support.
I will move the sanitycheck commit in another PR, of course this PR will be blocked until it is merged and the commit will stay visible in this PR.

aescolar

No complaints from me (note I did not retest it). But again, somebody who knows more about the flash side of things needs to give his opinion.
Just one request: Please add yourself also as codeowner to drivers/flash/*native_posix*
(Otherwise you could be sure I would be adding you to any review or bug for these files :) )

vanwinkeljan · 2019-05-14T17:30:19Z

Just one request: Please add yourself also as codeowner to drivers/flash/native_posix

Done

Sorry if I didn't mention this before, but can you pull the 'sanitycheck: Execute binary in output directory' commit into its own PR.

Done

vanwinkeljan · 2019-05-14T17:31:34Z

Added DNM label as this PR depends on #16149

CODEOWNERS

Added device tree support for POSIX architecture based boards. Signed-off-by: Jan Van Winkel <[email protected]>

Added native POSIX flash driver that writes flash content to a binary file. Signed-off-by: Jan Van Winkel <[email protected]>

Added native POSIX boards as target for flash related tests. Signed-off-by: Jan Van Winkel <[email protected]>

addressed

aescolar

I guess it is unlikely to get more reviews, so I think we can get this in, there is nothing wrong to me. (There would be just 1 nit: The 2nd UART being described in DTS for consistency, but it can come later)

vanwinkeljan requested review from aescolar, andrewboie, dbkinder, nashif and ramakrishnapallala as code owners January 16, 2019 00:04

vanwinkeljan added area: Flash area: native port Host native arch port (native_sim) labels Jan 16, 2019

vanwinkeljan force-pushed the flash_native_posix branch from b27006e to 53b17ac Compare January 16, 2019 07:35

vanwinkeljan assigned galak and unassigned galak Jan 16, 2019

vanwinkeljan requested a review from galak January 16, 2019 07:52

aescolar requested changes Jan 16, 2019

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sanitycheck: Execute binary in output directory #16149

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vanwinkeljan added 3 commits May 28, 2019 18:49

dts: posix: Add DTS support for POSIX architecture

3f0d3cb

Added device tree support for POSIX architecture based boards. Signed-off-by: Jan Van Winkel <[email protected]>

drivers: flash: Added native POSIX flash driver

d9846dc

Added native POSIX flash driver that writes flash content to a binary file. Signed-off-by: Jan Van Winkel <[email protected]>

tests: Added native POSIX to flash based tests

efec595

Added native POSIX boards as target for flash related tests. Signed-off-by: Jan Van Winkel <[email protected]>

vanwinkeljan force-pushed the flash_native_posix branch from 947b1cb to efec595 Compare May 28, 2019 16:49

nashif approved these changes May 28, 2019

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nashif merged commit afdbc20 into zephyrproject-rtos:master May 29, 2019

vanwinkeljan deleted the flash_native_posix branch May 29, 2019 07:03

vanwinkeljan mentioned this pull request May 29, 2019

Added support to access native posix flash via host file system #16467

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Native POSIX Flash support #12503

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		@@ -0,0 +1,531 @@
		/*
		* Copyright (c) 2019 Jan Van Winkel <[email protected]>

Native POSIX Flash support #12503

Native POSIX Flash support #12503

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