[U-Boot] [PATCH 1/5] ls2080: Exit dpaa only right before exiting U-Boot

[Prabhakar Kushwaha]

> -----Original Message-----
> From: U-Boot [mailto:u-boot-bounces at lists.denx.de] On Behalf Of
> Alexander Graf
> Sent: Friday, May 13, 2016 5:52 PM
> To: u-boot at lists.denx.de
> Subject: [U-Boot] [PATCH 1/5] ls2080: Exit dpaa only right before exiting U-
> Boot
> 
> On ls2080 we have a separate network fabric component which we need to
> shut down before we enter Linux (or any other OS). Along with that also
> comes configuration of the fabric using a description file.
> 
> Today we always stop and configure the fabric in the boot script and
> (again) exit it on device tree generation. This works ok for the normal booti
> case, but with bootefi the payload we're running may still want to access the
> network.
> 
> So let's add a new fsl_mc command that defers configuration and stopping
> the hardware to when we actually exit U-Boot, so that we can still use the
> fabric from an EFI payload.
> 
> For existing boot scripts, nothing should change with this patch.
> 
> Signed-off-by: Alexander Graf <agraf at suse.de>

With this patch.

If I does not apply MC,  I am getting following crash:-

Starting kernel ...

"Synchronous Abort" handler, esr 0x96000044
ELR:     fff4666c
LR:      fff46cc4
x0 : d51ec00010004000 x1 : 00000000ffcf9fc0
x2 : 0000000000000001 x3 : d51ec00010004000
x4 : 00000000d51ec000 x5 : 0000000000000000
x6 : 0000000000000000 x7 : 000000009fffccc7
x8 : 000000009fffd080 x9 : 000000000000000c
x10: 0000000000000003 x11: 00000000ffcf9cd8
x12: 00000000fff6cc40 x13: 00000000ffcf90e0
x14: 0000000100000000 x15: 000000009ffff9a3
x16: 00000000ffd0ad40 x17: 00000000ffd0b630
x18: 00000000ffcfbd78 x19: 0000000000000000
x20: 00000000fffba000 x21: 00000000fffba520
x22: 00000000fffba528 x23: 0000000000000000
x24: 0000000000000000 x25: 00000000ffd03878
x26: 00000000fff8fb40 x27: 0000000000000000
x28: 00000000a00000e0 x29: 00000000ffcf9f70

Resetting CPU ...

### ERROR ### Please RESET the board ###



If I apply this patch.  MC timeout happens

Starting kernel ...

Error: Timeout waiting for MC response
dpbp_open() failed: -110
dpbp_exit() failed: -110
[    0.000000] Booting Linux on physical CPU 0x0
[    0.000000] Initializing cgroup subsys cpu


--prabhakar