[U-Boot] [PATCH] mx6sabresd: Add fastboot support

[Shawn Guo]

On Mon, Jan 29, 2018 at 04:38:27PM +0100, Michael Nazzareno Trimarchi wrote:
> Hi
> 
> On Mon, Jan 29, 2018 at 4:23 PM, Shawn Guo <shawn.guo at linaro.org> wrote:
> > On Mon, Jan 29, 2018 at 11:11:57AM -0200, Fabio Estevam wrote:
> >> From: Fabio Estevam <fabio.estevam at nxp.com>
> >>
> >> fastboot tool is a convenient way to flash the eMMC, so
> >> add support for it.
> >>
> >> Examples of usages:
> >>
> >> On the mx6sabresd:
> >>
> >> => fastboot 0
> >>
> >> On the Linux PC connected via USB:
> >>
> >> $ sudo fastboot getvar bootloader-version -i 0x0525
> >> bootloader-version: U-Boot 2018.01-00550-g7517cfe
> >> finished. total time: 0.000s
> >>
> >> $ sudo fastboot reboot -i 0x0525
> >>
> >> (this causes the mx6sabresd to reboot)
> >>
> >> Signed-off-by: Fabio Estevam <fabio.estevam at nxp.com>
> >
> > Tested-by: Shawn Guo <shawn.guo at linaro.org>
> >
> 
> are partition already defined? in sabre config. It's not used to know
> the u-boot version ;)

Ah, yes.  I forgot to mention that I additionally enabled option
CONFIG_EFI_PARTITION to get GPT partition support.

@Fabio, can we add this option as well?

> Can you just update the commit message in how you perform the update?

I booted the board into Debian via NFS, and then use gpart to create GPT
partitions on the eMMC.  With CONFIG_EFI_PARTITION enabled in U-Boot, I
can list the partitions on eMMC as below.

=> mmc dev 2
switch to partitions #0, OK
mmc2(part 0) is current device
=> mmc part

Partition Map for MMC device 2  --   Partition Type: EFI

Part    Start LBA       End LBA         Name
        Attributes
        Type GUID
        Partition GUID
  1     0x00000800      0x000407ff      "boot"
        attrs:  0x0000000000000000
        type:   21686148-6449-6e6f-744e-656564454649
        guid:   6137f187-600c-4dc4-8a74-ee8f0250d455
  2     0x00040800      0x002987ff      "system"
        attrs:  0x0000000000000000
        type:   0fc63daf-8483-4772-8e79-3d69d8477de4
        guid:   af78282f-21b5-4324-bf7a-f460d1ae0015
  3     0x00298800      0x003187ff      "vendor"
        attrs:  0x0000000000000000
        type:   0fc63daf-8483-4772-8e79-3d69d8477de4
        guid:   15830513-0195-4e86-9b2c-cd3af5e14570
  4     0x00318800      0x003587ff      "cache"
        attrs:  0x0000000000000000
        type:   0fc63daf-8483-4772-8e79-3d69d8477de4
        guid:   6e909a60-606b-4c43-bbd4-f780afd97302
  5     0x00358800      0x00ecbfde      "data"
        attrs:  0x0000000000000000
        type:   0fc63daf-8483-4772-8e79-3d69d8477de4
        guid:   9e79dc0b-35d9-40f0-b638-3e718362cb26
=> fastboot 0
 
At this point, I can do 'fastboot flash system system.img' from host PC.

Shawn