Re: [yocto] Using U-boot in Yocto
Hello Jonas, Do not forget that you can also build and use U-Boot completely out of a YOCTO tree. I do things like that, not using the YOCTO U-Boot build. (As a matter of fact, I do not use the kernel as well, only rootfs for the testing purposes) But it depends what and how your business/project management model looks like, I should say. Zoran ___ On Sun, Dec 20, 2020 at 3:10 PM Jonas Vautherin wrote: > > Oh, for some reason I had not found the docs. Thanks a lot, that looks really > good! > > On Sun, Dec 20, 2020 at 2:13 PM Paul Barker wrote: >> >> On Sun, 20 Dec 2020 at 09:02, Jonas Vautherin >> wrote: >> > >> > Hello! >> > >> > I am new to Yocto, and hope that this is the right way to ask for help :-). >> > >> > I would like to have a way to flash my RPi over USB using `fastboot`, and >> > it seems to me that one way to do that is to enable a "fastboot mode" in >> > U-boot. Therefore, I am trying to use U-boot in my Yocto image. >> > >> > There seems to be a recipe for it, hence I just added the package to my >> > `-image.bb` file: >> > >> > ``` >> > IMAGE_INSTALL += "u-boot" >> > ``` >> > >> > However, I am not really used to bootloaders, and I am not sure it is >> > booting with it. How can I check if my system is booting with U-boot? It >> > does not seem like it's appearing in `dmesg` (which I presume is only >> > starting with the kernel). Do I need to observe that with a serial >> > connection to my RPi, or is there a log saved somewhere on the system? >> > >> > Note that my image uses `meta-raspberrypi` for MACHINE "raspberrypi4-64" >> > (Raspberry Pi 4 Model B). >> >> The IMAGE_INSTALL variable is used for packages to install into the >> rootfs. Typically bootloaders need some special handling and simply >> adding them to IMAGE_INSTALL either doesn't work or isn't sufficient >> to enable booting via the chosen bootloader. >> >> For Raspberry Pi we made this simple by adding the RPI_USE_U_BOOT >> variable which you can set in your distro config or in local.conf. See >> https://meta-raspberrypi.readthedocs.io/en/latest/extra-build-config.html#boot-to-u-boot >> for more details. >> >> The layer documentation for meta-raspberrypi is actually pretty good, >> you can find it at >> https://meta-raspberrypi.readthedocs.io/en/latest/index.html. >> >> Thanks, >> >> -- >> Paul Barker >> Konsulko Group > > > > -=-=-=-=-=-=-=-=-=-=-=- Links: You receive all messages sent to this group. View/Reply Online (#51819): https://lists.yoctoproject.org/g/yocto/message/51819 Mute This Topic: https://lists.yoctoproject.org/mt/79100324/21656 Group Owner: yocto+ow...@lists.yoctoproject.org Unsubscribe: https://lists.yoctoproject.org/g/yocto/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
Re: [yocto] Using U-boot in Yocto
Oh, for some reason I had not found the docs. Thanks a lot, that looks really good! On Sun, Dec 20, 2020 at 2:13 PM Paul Barker wrote: > On Sun, 20 Dec 2020 at 09:02, Jonas Vautherin > wrote: > > > > Hello! > > > > I am new to Yocto, and hope that this is the right way to ask for help > :-). > > > > I would like to have a way to flash my RPi over USB using `fastboot`, > and it seems to me that one way to do that is to enable a "fastboot mode" > in U-boot. Therefore, I am trying to use U-boot in my Yocto image. > > > > There seems to be a recipe for it, hence I just added the package to my > `-image.bb` file: > > > > ``` > > IMAGE_INSTALL += "u-boot" > > ``` > > > > However, I am not really used to bootloaders, and I am not sure it is > booting with it. How can I check if my system is booting with U-boot? It > does not seem like it's appearing in `dmesg` (which I presume is only > starting with the kernel). Do I need to observe that with a serial > connection to my RPi, or is there a log saved somewhere on the system? > > > > Note that my image uses `meta-raspberrypi` for MACHINE "raspberrypi4-64" > (Raspberry Pi 4 Model B). > > The IMAGE_INSTALL variable is used for packages to install into the > rootfs. Typically bootloaders need some special handling and simply > adding them to IMAGE_INSTALL either doesn't work or isn't sufficient > to enable booting via the chosen bootloader. > > For Raspberry Pi we made this simple by adding the RPI_USE_U_BOOT > variable which you can set in your distro config or in local.conf. See > > https://meta-raspberrypi.readthedocs.io/en/latest/extra-build-config.html#boot-to-u-boot > for more details. > > The layer documentation for meta-raspberrypi is actually pretty good, > you can find it at > https://meta-raspberrypi.readthedocs.io/en/latest/index.html. > > Thanks, > > -- > Paul Barker > Konsulko Group > -=-=-=-=-=-=-=-=-=-=-=- Links: You receive all messages sent to this group. View/Reply Online (#51815): https://lists.yoctoproject.org/g/yocto/message/51815 Mute This Topic: https://lists.yoctoproject.org/mt/79100324/21656 Group Owner: yocto+ow...@lists.yoctoproject.org Unsubscribe: https://lists.yoctoproject.org/g/yocto/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
Re: [yocto] Using U-boot in Yocto
On Sun, 20 Dec 2020 at 09:02, Jonas Vautherin wrote: > > Hello! > > I am new to Yocto, and hope that this is the right way to ask for help :-). > > I would like to have a way to flash my RPi over USB using `fastboot`, and it > seems to me that one way to do that is to enable a "fastboot mode" in U-boot. > Therefore, I am trying to use U-boot in my Yocto image. > > There seems to be a recipe for it, hence I just added the package to my > `-image.bb` file: > > ``` > IMAGE_INSTALL += "u-boot" > ``` > > However, I am not really used to bootloaders, and I am not sure it is booting > with it. How can I check if my system is booting with U-boot? It does not > seem like it's appearing in `dmesg` (which I presume is only starting with > the kernel). Do I need to observe that with a serial connection to my RPi, or > is there a log saved somewhere on the system? > > Note that my image uses `meta-raspberrypi` for MACHINE "raspberrypi4-64" > (Raspberry Pi 4 Model B). The IMAGE_INSTALL variable is used for packages to install into the rootfs. Typically bootloaders need some special handling and simply adding them to IMAGE_INSTALL either doesn't work or isn't sufficient to enable booting via the chosen bootloader. For Raspberry Pi we made this simple by adding the RPI_USE_U_BOOT variable which you can set in your distro config or in local.conf. See https://meta-raspberrypi.readthedocs.io/en/latest/extra-build-config.html#boot-to-u-boot for more details. The layer documentation for meta-raspberrypi is actually pretty good, you can find it at https://meta-raspberrypi.readthedocs.io/en/latest/index.html. Thanks, -- Paul Barker Konsulko Group -=-=-=-=-=-=-=-=-=-=-=- Links: You receive all messages sent to this group. View/Reply Online (#51813): https://lists.yoctoproject.org/g/yocto/message/51813 Mute This Topic: https://lists.yoctoproject.org/mt/79100324/21656 Group Owner: yocto+ow...@lists.yoctoproject.org Unsubscribe: https://lists.yoctoproject.org/g/yocto/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
[yocto] Using U-boot in Yocto
Hello! I am new to Yocto, and hope that this is the right way to ask for help :-). I would like to have a way to flash my RPi over USB using `fastboot`, and it seems to me that one way to do that is to enable a "fastboot mode" in U-boot. Therefore, I am trying to use U-boot in my Yocto image. There seems to be a recipe for it, hence I just added the package to my `- image.bb` file: ``` IMAGE_INSTALL += "u-boot" ``` However, I am not really used to bootloaders, and I am not sure it is booting with it. How can I check if my system is booting with U-boot? It does not seem like it's appearing in `dmesg` (which I presume is only starting with the kernel). Do I need to observe that with a serial connection to my RPi, or is there a log saved somewhere on the system? Note that my image uses `meta-raspberrypi` for MACHINE "raspberrypi4-64" (Raspberry Pi 4 Model B). Cheers, -=-=-=-=-=-=-=-=-=-=-=- Links: You receive all messages sent to this group. View/Reply Online (#51812): https://lists.yoctoproject.org/g/yocto/message/51812 Mute This Topic: https://lists.yoctoproject.org/mt/79100324/21656 Group Owner: yocto+ow...@lists.yoctoproject.org Unsubscribe: https://lists.yoctoproject.org/g/yocto/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
