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

Shawn Guo
2018-01-30T01:39:09Z

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@linaro.org> wrote:
> > On Mon, Jan 29, 2018 at 11:11:57AM -0200, Fabio Estevam wrote:
> >> From: Fabio Estevam <fabio.estevam@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@nxp.com>
> >
> > Tested-by: Shawn Guo <shawn.guo@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