On Fri, Jun 16, 2017 at 12:12 PM, Matthew McClintock <msm-...@mcclintock.net> wrote: > This is useful to update the bootloader/vfat partition from u-boot when > you don't want to update everything: > > U-Boot> tftpboot 0x1000000 tmp/0VXje > Waiting for Ethernet connection... done. > Using sms0 device > TFTP from server 192.168.0.1; our IP address is 192.168.0.26 > Filename 'image.vfat'. > Load address: 0x1000000 > Loading: ################################################## 40 MiB > 2.1 MiB/s > done > Bytes transferred = 41943040 (2800000 hex) > U-Boot> mmc part > > Partition Map for MMC device 0 -- Partition Type: DOS > > Part Start Sector Num Sectors UUID Type > 1 8192 81920 a63a4fbc-01 0c Boot > 2 90112 163840 a63a4fbc-02 83 > U-Boot> mmc erase 0x2000 0x14000 > > MMC erase: dev # 0, block # 8192, count 81920 ... 81920 blocks erased: > OK > U-Boot> mmc write 0x1000000 0x2000 0x14000 > > MMC write: dev # 0, block # 8192, count 81920 ... 81920 blocks written: > OK > U-Boot> > > Signed-off-by: Matthew McClintock <msm-...@mcclintock.net> > --- > classes/sdcard_image-rpi.bbclass | 8 ++++++++ > 1 file changed, 8 insertions(+) > > diff --git a/classes/sdcard_image-rpi.bbclass > b/classes/sdcard_image-rpi.bbclass > index af3e807..27a0dfc 100644 > --- a/classes/sdcard_image-rpi.bbclass > +++ b/classes/sdcard_image-rpi.bbclass > @@ -72,6 +72,10 @@ SDIMG = "${IMGDEPLOYDIR}/${IMAGE_NAME}.rootfs.rpi-sdimg" > # Additional files and/or directories to be copied into the vfat partition > from the IMAGE_ROOTFS. > FATPAYLOAD ?= "" > > +# SD card vfat partition image name > +SDIMG_VFAT = "${IMGDEPLOYDIR}/${IMAGE_NAME}.vfat" > +SDIMG_LINK_VFAT = "${IMGDEPLOYDIR}/${IMAGE_LINK_NAME}.vfat" > + > IMAGE_CMD_rpi-sdimg () { > > # Align partitions > @@ -145,6 +149,10 @@ IMAGE_CMD_rpi-sdimg () { > echo "${IMAGE_NAME}" > ${WORKDIR}/image-version-info > mcopy -i ${WORKDIR}/boot.img -v ${WORKDIR}/image-version-info :: > > + # Deploy vfat partition > + cp ${WORKDIR}/boot.img ${SDIMG_VFAT} > + ln -sf ${SDIMG_VFAT} ${SDIMG_LINK_VFAT} > +
it is of use if I am not using u-boot ? is there any penalty ? > # Burn Partitions > dd if=${WORKDIR}/boot.img of=${SDIMG} conv=notrunc seek=1 bs=$(expr > ${IMAGE_ROOTFS_ALIGNMENT} \* 1024) && sync && sync > # If SDIMG_ROOTFS_TYPE is a .xz file use xzcat > -- > 2.13.1 > > -- > _______________________________________________ > yocto mailing list > yocto@yoctoproject.org > https://lists.yoctoproject.org/listinfo/yocto -- _______________________________________________ yocto mailing list yocto@yoctoproject.org https://lists.yoctoproject.org/listinfo/yocto