[1/1] esp-hosted: new package

The package provides a kernel driver for esp32 as wifi module.
The project https://github.com/espressif/esp-hosted/tree/release/ng-v1.0.2.
 configures the esp32 as a wifi module. The host and the esp32 can be
connected via sd bus or spi. This package supports only the host sd
connection.
On the esp the firmware from
https://github.com/espressif/esp-hosted/releases/download/release%2Fng-v1.0.2/ESP-Hosted-NG_release_v1.0.2.tgz
needs to be flashed.

Signed-off-by: Jens Kleintje <scooby22@web.de>
---
 DEVELOPERS                         |  1 +
 package/Config.in                  |  1 +
 package/esp-hosted/Config.in       |  8 ++++++++
 package/esp-hosted/esp-hosted.hash |  2 ++
 package/esp-hosted/esp-hosted.mk   | 17 +++++++++++++++++
 5 files changed, 29 insertions(+)
 create mode 100644 package/esp-hosted/Config.in
 create mode 100644 package/esp-hosted/esp-hosted.hash
 create mode 100644 package/esp-hosted/esp-hosted.mk

--
2.25.1

Hi Jens,

On 20/03/23 12:55, Jens Kleintje wrote:
> The package provides a kernel driver for esp32 as wifi module.
> The project https://github.com/espressif/esp-hosted/tree/release/ng-v1.0.2.
>   configures the esp32 as a wifi module. The host and the esp32 can be
> connected via sd bus or spi. This package supports only the host sd
> connection.
> On the esp the firmware from
> https://github.com/espressif/esp-hosted/releases/download/release%2Fng-v1.0.2/ESP-Hosted-NG_release_v1.0.2.tgz
> needs to be flashed.

me and Jesse in Cc were working on this too. Have you checked that it
builds correctly with latest Linux versions? There are several PRs open
upstream for months(they are not reactive):
https://github.com/espressif/esp-hosted/pull/147
https://github.com/espressif/esp-hosted/pull/176
https://github.com/espressif/esp-hosted/pull/209

and those fix building on Linux 5.17, 5.18, 6.0.

So I suspect you need to add those PRs as local patches and check for
Linux 6.1 and 6.2

Best regards
--
Giulio Benetti
CTO/CEO@Benetti Engineering sas

> Signed-off-by: Jens Kleintje <scooby22@web.de>
> ---
>   DEVELOPERS                         |  1 +
>   package/Config.in                  |  1 +
>   package/esp-hosted/Config.in       |  8 ++++++++
>   package/esp-hosted/esp-hosted.hash |  2 ++
>   package/esp-hosted/esp-hosted.mk   | 17 +++++++++++++++++
>   5 files changed, 29 insertions(+)
>   create mode 100644 package/esp-hosted/Config.in
>   create mode 100644 package/esp-hosted/esp-hosted.hash
>   create mode 100644 package/esp-hosted/esp-hosted.mk
> 
> diff --git a/DEVELOPERS b/DEVELOPERS
> index b6d288c54f..2d2559242c 100644
> --- a/DEVELOPERS
> +++ b/DEVELOPERS
> @@ -1483,6 +1483,7 @@ F:	package/openfpgaloader/
> 
>   N:	Jens Kleintje <scooby22@web.de>
>   F:	package/gcnano-binaries/
> +F:	package/esp-hosted/
> 
>   N:	Jens Rosenboom <j.rosenboom@x-ion.de>
>   F:	package/sl/
> diff --git a/package/Config.in b/package/Config.in
> index 0f8dab3e71..89a6dacbc1 100644
> --- a/package/Config.in
> +++ b/package/Config.in
> @@ -494,6 +494,7 @@ endmenu
>   	source "package/edid-decode/Config.in"
>   	source "package/edk2-non-osi/Config.in"
>   	source "package/edk2-platforms/Config.in"
> +	source "package/esp-hosted/Config.in"
>   	source "package/eudev/Config.in"
>   	source "package/ev3dev-linux-drivers/Config.in"
>   	source "package/evemu/Config.in"
> diff --git a/package/esp-hosted/Config.in b/package/esp-hosted/Config.in
> new file mode 100644
> index 0000000000..b1f44aa956
> --- /dev/null
> +++ b/package/esp-hosted/Config.in
> @@ -0,0 +1,8 @@
> +comment "esp-hosted needs a Linux kernel to be built"
> +	depends on !BR2_LINUX_KERNEL
> +
> +config BR2_PACKAGE_ESP_HOSTED
> +	bool "esp-hosted"
> +	depends on BR2_LINUX_KERNEL
> +	help
> +	  Wireless driver for esp32
> diff --git a/package/esp-hosted/esp-hosted.hash b/package/esp-hosted/esp-hosted.hash
> new file mode 100644
> index 0000000000..6be9337159
> --- /dev/null
> +++ b/package/esp-hosted/esp-hosted.hash
> @@ -0,0 +1,2 @@
> +# Locally computed
> +sha256 5538d6aa0f322801ddd8428d131f485e7e490be871d9cdf650afb894bb485905 esp-hosted-ng-v1.0.2.tar.gz
> diff --git a/package/esp-hosted/esp-hosted.mk b/package/esp-hosted/esp-hosted.mk
> new file mode 100644
> index 0000000000..53e5d3bcc0
> --- /dev/null
> +++ b/package/esp-hosted/esp-hosted.mk
> @@ -0,0 +1,17 @@
> +################################################################################
> +#
> +# esp-hosted
> +#
> +################################################################################
> +
> +ESP_HOSTED_VERSION = ng-v1.0.2
> +ESP_HOSTED_SITE = $(call github,espressif,esp-hosted,refs/tags/release/$(ESP_HOSTED_VERSION))
> +ESP_HOSTED_DEPENDENCIES = linux
> +ESP_HOSTED_MODULE_SUBDIRS = esp_hosted_ng/host
> +
> +ESP_HOSTED_MODULE_MAKE_OPTS = KERNEL=$(LINUX_DIR) \
> +			      CROSS_COMPILE=$(TARGET_CROSS) \
> +			      MODULE_NAME=esp32_sdio
> +
> +$(eval $(kernel-module))
> +$(eval $(generic-package))
> --
> 2.25.1
> 
> _______________________________________________
> buildroot mailing list
> buildroot@buildroot.org
> https://lists.buildroot.org/mailman/listinfo/buildroot

Hi Jens,

here[0] is there is a patch that deals with all the points below and
support both SDIO and SPI busses. All patches I and Jesse contributed
have been upstream.

[0]: 
https://patchwork.ozlabs.org/project/buildroot/patch/20230419191956.161587-1-giulio.benetti@benettiengineering.com/

Best regards

Hello Jens,

On Mon, 20 Mar 2023 12:55:09 +0100
Jens Kleintje <scooby22@web.de> wrote:

> The package provides a kernel driver for esp32 as wifi module.
> The project https://github.com/espressif/esp-hosted/tree/release/ng-v1.0.2.
>  configures the esp32 as a wifi module. The host and the esp32 can be
> connected via sd bus or spi. This package supports only the host sd
> connection.
> On the esp the firmware from
> https://github.com/espressif/esp-hosted/releases/download/release%2Fng-v1.0.2/ESP-Hosted-NG_release_v1.0.2.tgz
> needs to be flashed.
> 
> Signed-off-by: Jens Kleintje <scooby22@web.de>
> ---
>  DEVELOPERS                         |  1 +
>  package/Config.in                  |  1 +
>  package/esp-hosted/Config.in       |  8 ++++++++
>  package/esp-hosted/esp-hosted.hash |  2 ++
>  package/esp-hosted/esp-hosted.mk   | 17 +++++++++++++++++
>  5 files changed, 29 insertions(+)
>  create mode 100644 package/esp-hosted/Config.in
>  create mode 100644 package/esp-hosted/esp-hosted.hash
>  create mode 100644 package/esp-hosted/esp-hosted.mk

Sorry for the super long delay in getting back to you, and thanks for
your contribution. As Giulio replied, he had been working on a similar
package, and posted on July 11, 2023 a new iteration that was more
up-to-date and more complete, so I merged his proposal.

Do not hesitate to give it a test now that it is merged in our master
branch, and report back if you encounter any issue.

Thanks a lot!

Thomas