[yocto] [meta-raspberrypi][PATCH] sdcard_image-rpi.bbclass: deploy vfat partition

[Khem Raj]

On Sat, Jun 17, 2017 at 8:20 AM, Tom Rini <trini at konsulko.com> wrote:
> On Fri, Jun 16, 2017 at 06:05:07PM -0700, Khem Raj wrote:
>> On Fri, Jun 16, 2017 at 12:12 PM, Matthew McClintock
>> <msm-oss at 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-oss at 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 ?
>
> The stock firmware also uses a vfat partition, so this could just as
> easily hold those contents.

yes it does, can it do the same operations like u-boot ?

>
> --
> Tom